diff --git a/NEWS b/NEWS
index f42fcfc43..d0e7d7e1b 100644
--- a/NEWS
+++ b/NEWS
@@ -41,6 +41,10 @@ New in spot 2.3.0.dev (not yet released)
     caused any user-defined CPPFLAGS to be ignored while building
     Spot.
 
+  - The display of clusters with universal edges was confused, because the
+    intermediate node was not in the cluster even if one of the target was
+    in the same one.
+
 New in spot 2.3 (2017-01-19)
 
   Build:
diff --git a/spot/twaalgos/dot.cc b/spot/twaalgos/dot.cc
index 2c5d2908d..fd1d7e263 100644
--- a/spot/twaalgos/dot.cc
+++ b/spot/twaalgos/dot.cc
@@ -369,7 +369,8 @@ namespace spot
       std::set<std::pair<int, int>> done;
 
       void
-      print_dst(int dst, const char* style = nullptr, int color_num = -1)
+      print_dst(int dst, const char* style = nullptr, int scc_num = -1,
+                int color_num = -1)
       {
         std::ostringstream tmp_dst;
         tmp_dst << dst;
@@ -584,9 +585,14 @@ namespace spot
       }
 
       void
-      process_link(const twa_graph::edge_storage_t& t, int number)
+      process_link(const twa_graph::edge_storage_t& t, int number,
+                   int scc_num = -1)
       {
         os_ << "  " << t.src << " -> " << (int)t.dst;
+        if (scc_num >= 0)
+          {
+            os_ << '.' << scc_num;
+          }
         if (aut_->is_univ_dest(t.dst) && highlight_edges_
             && !opt_shared_univ_dest_)
           {
@@ -659,9 +665,9 @@ namespace spot
         if (aut_->is_univ_dest(t.dst))
           {
             if (color_num >= 0)
-              print_dst(t.dst, highlight.c_str(), color_num);
+              print_dst(t.dst, highlight.c_str(), scc_num, color_num);
             else
-              print_dst(t.dst, highlight.c_str());
+              print_dst(t.dst, highlight.c_str(), scc_num);
           }
       }
 
@@ -764,7 +770,29 @@ namespace spot
                     os_ << "  label=\"\"\n";
                   }
                 for (auto s: si->states_of(i))
-                  process_state(s);
+                  {
+                    process_state(s);
+                    int trans_num = 0;
+                    for (auto& t : aut_->out(s))
+                      {
+                        if (aut_->is_univ_dest(t.dst))
+                          {
+                            bool to_write = false;
+                            for (unsigned d: aut_->univ_dests(t.dst))
+                              {
+                                to_write = si->scc_of(d) == si->scc_of(s);
+                                if (to_write)
+                                    break;
+                              }
+                            if (to_write)
+                              process_link(t, trans_num++, i);
+                            else
+                              process_link(t, trans_num++);
+                          }
+                         else
+                           process_link(t, trans_num++);
+                      }
+                  }
                 os_ << "  }\n";
               }
           }
@@ -772,10 +800,12 @@ namespace spot
         for (unsigned n = 0; n < ns; ++n)
           {
             if (!si || !si->reachable_state(n))
-              process_state(n);
-            int trans_num = 0;
-            for (auto& t: aut_->out(n))
-              process_link(t, trans_num++);
+              {
+                process_state(n);
+                int trans_num = 0;
+                for (auto& t: aut_->out(n))
+                  process_link(t, trans_num++);
+              }
           }
         end();
       }
diff --git a/tests/core/alternating.test b/tests/core/alternating.test
index 7f20b953f..d8c0f3605 100755
--- a/tests/core/alternating.test
+++ b/tests/core/alternating.test
@@ -69,37 +69,49 @@ digraph G {
   color=green
   label=""
   2 [label="G(a)"]
+  2 -> 2 [label="a"]
   }
   subgraph cluster_1 {
   color=red
   label=""
   1 [label="FG(a)\n⓿"]
+  1 -> 2 [label="a"]
+  1 -> 1 [label="1"]
   }
   subgraph cluster_2 {
   color=green
   label=""
   6 [label="t"]
+  6 -> 6 [label="1"]
   }
   subgraph cluster_3 {
   color=red
   label=""
   4 [label="F(b)\n⓿"]
+  4 -> 6 [label="b"]
+  4 -> 4 [label="!b"]
   }
   subgraph cluster_4 {
   color=green
   label=""
   3 [label="GF(b)"]
+  3 -> 3 [label="b"]
+  3 -> -8.4 [label="!b", style=bold, color="#FAA43A", arrowhead=onormal]
+    -8.4 [label=<>,shape=point]
+    -8.4 -> 3 [style=bold, color="#FAA43A"]
+    -8.4 -> 4 [style=bold, color="#FAA43A"]
   }
   subgraph cluster_5 {
   color=red
   label=""
   5 [label="((a) U (b))\n⓿"]
+  5 -> 6 [label="b"]
+  5 -> 5 [label="a & !b"]
   }
   subgraph cluster_6 {
   color=black
   label=""
   0 [label="((((a) U (b)) && GF(b)) && FG(a))"]
-  }
   0 -> -1 [label="b", arrowhead=onormal]
     -1 [label=<>,shape=point]
     -1 -> 1
@@ -109,19 +121,7 @@ digraph G {
     -4 -> 1 [style=bold, color="#F15854"]
     -4 -> 3 [style=bold, color="#F15854"]
     -4 -> 5 [style=bold, color="#F15854"]
-  1 -> 2 [label="a"]
-  1 -> 1 [label="1"]
-  2 -> 2 [label="a"]
-  3 -> 3 [label="b"]
-  3 -> -8 [label="!b", style=bold, color="#FAA43A", arrowhead=onormal]
-    -8 [label=<>,shape=point]
-    -8 -> 3 [style=bold, color="#FAA43A"]
-    -8 -> 4 [style=bold, color="#FAA43A"]
-  4 -> 6 [label="b"]
-  4 -> 4 [label="!b"]
-  5 -> 6 [label="b"]
-  5 -> 5 [label="a & !b"]
-  6 -> 6 [label="1"]
+  }
 }
 EOF
 
@@ -353,7 +353,7 @@ State: 0
 EOF
 diff out5 expect
 
-# Test if split option is correct
+# Test if split option with color is correct
 cat >ex6<<EOF
 HOA: v1.1
 States: 2
@@ -373,6 +373,7 @@ EOF
 
 run 0 autfilt --dot='baryf(Lato)' ex6 > ex6.dot
 
+style='arrowhead=onormal'
 cat >expect6.dot<<EOF
 digraph G {
   rankdir=LR
@@ -389,11 +390,11 @@ digraph G {
     -1 -> 1
   0 [label=<0>]
   0 -> 0 [label=<!a &amp; !c>]
-  0 -> -1.1 [label=<a &amp; b &amp; !c>, style=bold, color="#F17CB0", arrowhead=onormal]
+  0 -> -1.1 [label=<a &amp; b &amp; !c>, style=bold, color="#F17CB0", $style]
     -1.1 [label=<>,shape=point]
     -1.1 -> 0 [style=bold, color="#F17CB0"]
     -1.1 -> 1 [style=bold, color="#F17CB0"]
-  0 -> -1.2 [label=<a &amp; !c>, style=bold, color="#FAA43A", arrowhead=onormal]
+  0 -> -1.2 [label=<a &amp; !c>, style=bold, color="#FAA43A", $style]
     -1.2 [label=<>,shape=point]
     -1.2 -> 0 [style=bold, color="#FAA43A"]
     -1.2 -> 1 [style=bold, color="#FAA43A"]
@@ -690,6 +691,79 @@ EOF
 
 diff ex10.dot expect10.dot
 
+cat >ex11 <<EOF
+HOA: v1
+tool: "LTL3HOA"
+name: "SLAA for G((b & Fa) | (!b & G!a))"
+States: 4
+AP: 2 "b" "a"
+Start: 0
+Acceptance: 1 Fin(0)
+--BODY--
+State: 0 "G((b & Fa) | (!b & G!a))"
+  [(0 & 1)] 0
+  [(0 & !1)] 0&1
+  [(!0 & !1)] 0&2
+State: 1 "Fa"
+  [(1)] 3
+  [(!1)] 1 {1}
+State: 2 "G!a"
+  [(!1)] 2
+State: 3 "t"
+  [t] 3
+--END--
+EOF
+
+run 2 autfilt --dot='sbarf(Lato)' ex11 > ex11.dot
+
+cat >expect11.dot <<EOF
+digraph G {
+  rankdir=LR
+  label=<Fin(<font color="#5DA5DA">⓿</font>)>
+  labelloc="t"
+  fontname="Lato"
+  node [fontname="Lato"]
+  edge [fontname="Lato"]
+  I [label="", style=invis, width=0]
+  I -> 0
+  subgraph cluster_0 {
+  color=green
+  label=""
+  3 [label="t"]
+  3 -> 3 [label=<1>]
+  }
+  subgraph cluster_1 {
+  color=green
+  label=""
+  1 [label="Fa"]
+  1 -> 3 [label=<a>]
+  1 -> 1 [label=<!a>]
+  }
+  subgraph cluster_2 {
+  color=green
+  label=""
+  2 [label="G!a"]
+  2 -> 2 [label=<!a>]
+  }
+  subgraph cluster_3 {
+  color=green
+  label=""
+  0 [label="G((b & Fa) | (!b & G!a))"]
+  0 -> 0 [label=<a &amp; b>]
+  0 -> -1.3 [label=<!a &amp; b>, arrowhead=onormal]
+    -1.3 [label=<>,shape=point]
+    -1.3 -> 0
+    -1.3 -> 1
+  0 -> -4.3 [label=<!a &amp; !b>, arrowhead=onormal]
+    -4.3 [label=<>,shape=point]
+    -4.3 -> 0
+    -4.3 -> 2
+  }
+}
+EOF
+
+diff ex11.dot expect11.dot
+
 # Detect cases where alternation-removal cannot work.
 cat >in <<EOF
 HOA: v1
diff --git a/tests/core/neverclaimread.test b/tests/core/neverclaimread.test
index e07805c40..e2f80f92e 100755
--- a/tests/core/neverclaimread.test
+++ b/tests/core/neverclaimread.test
@@ -336,15 +336,15 @@ digraph G {
   color=green
   label=""
   1 [label="1", peripheries=2]
+  1 -> 1 [label="1"]
   }
   subgraph cluster_1 {
   color=red
   label=""
   0 [label="0"]
-  }
   0 -> 1 [label="b"]
   0 -> 0 [label="0"]
-  1 -> 1 [label="1"]
+  }
 }
 EOF
 diff stdout expected
diff --git a/tests/core/readsave.test b/tests/core/readsave.test
index 1d1eb5603..40cf0e634 100755
--- a/tests/core/readsave.test
+++ b/tests/core/readsave.test
@@ -327,21 +327,21 @@ digraph G {
   subgraph cluster_0 {
   color=green
   1 [label="s1", peripheries=2]
+  1 -> 1 [label="a"]
   }
   subgraph cluster_1 {
   color=green
   0 [label="s0", peripheries=2]
+  0 -> 0 [label="b"]
   }
   subgraph cluster_2 {
   color=black
   3 [label="s3"]
-  }
-  0 -> 0 [label="b"]
-  1 -> 1 [label="a"]
-  2 [label="s2"]
-  2 -> 0 [label="b"]
   3 -> 1 [label="a"]
   3 -> 0 [label="b"]
+  }
+  2 [label="s2"]
+  2 -> 0 [label="b"]
 }
 EOF
 
diff --git a/tests/core/sccdot.test b/tests/core/sccdot.test
index 919467a5d..75ddb3dfd 100755
--- a/tests/core/sccdot.test
+++ b/tests/core/sccdot.test
@@ -83,67 +83,67 @@ digraph G {
   color=grey
   label=""
   5 [label="5"]
+  5 -> 6 [label="1"]
   6 [label="6"]
+  6 -> 5 [label="1"]
   }
   subgraph cluster_1 {
   color=grey
   label=""
   0 [label="0"]
+  0 -> 0 [label="a & b\n{0,1,2}"]
+  0 -> 0 [label="!a & !b\n{2}"]
+  0 -> 5 [label="a\n{2}"]
   }
   subgraph cluster_2 {
   color=green
   label=""
   9 [label="9"]
+  9 -> 9 [label="!a & b\n{0,2}"]
+  9 -> 10 [label="a & b\n{0,1}"]
   10 [label="10"]
+  10 -> 9 [label="!a & b\n{0,1}"]
+  10 -> 10 [label="a & b\n{0,2}"]
   }
   subgraph cluster_3 {
   color=green
   label=""
   8 [label="8"]
+  8 -> 8 [label="!a & b\n{0,2}"]
+  8 -> 8 [label="a & b\n{0,1}"]
+  8 -> 9 [label="1"]
   }
   subgraph cluster_4 {
   color=green
   label=""
   7 [label="7"]
+  7 -> 7 [label="!a & b\n{0,1}"]
+  7 -> 7 [label="a & b\n{0,2}"]
+  7 -> 8 [label="1"]
   }
   subgraph cluster_5 {
   color=black
   label=""
   2 [label="2"]
+  2 -> 0 [label="a"]
+  2 -> 7 [label="b"]
   }
   subgraph cluster_6 {
   color=red
   label=""
   4 [label="4"]
+  4 -> 4 [label="!b\n{1,2}"]
+  4 -> 2 [label="b"]
   }
   subgraph cluster_7 {
   color=green
   label=""
   1 [label="1"]
-  3 [label="3"]
-  }
-  0 -> 0 [label="a & b\n{0,1,2}"]
-  0 -> 0 [label="!a & !b\n{2}"]
-  0 -> 5 [label="a\n{2}"]
   1 -> 4 [label="b"]
   1 -> 3 [label="a & !b"]
-  2 -> 0 [label="a"]
-  2 -> 7 [label="b"]
+  3 [label="3"]
   3 -> 1 [label="a & b\n{0,1}"]
-  4 -> 4 [label="!b\n{1,2}"]
-  4 -> 2 [label="b"]
-  5 -> 6 [label="1"]
-  6 -> 5 [label="1"]
-  7 -> 7 [label="!a & b\n{0,1}"]
-  7 -> 7 [label="a & b\n{0,2}"]
-  7 -> 8 [label="1"]
-  8 -> 8 [label="!a & b\n{0,2}"]
-  8 -> 8 [label="a & b\n{0,1}"]
-  8 -> 9 [label="1"]
-  9 -> 9 [label="!a & b\n{0,2}"]
-  9 -> 10 [label="a & b\n{0,1}"]
-  10 -> 9 [label="!a & b\n{0,1}"]
-  10 -> 10 [label="a & b\n{0,2}"]
+  }
 }
 EOF
 
diff --git a/tests/python/_altscc.ipynb b/tests/python/_altscc.ipynb
index 1a5da1624..68964929a 100644
--- a/tests/python/_altscc.ipynb
+++ b/tests/python/_altscc.ipynb
@@ -15,7 +15,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.5.2+"
+   "version": "3.5.3"
   },
   "name": ""
  },
@@ -122,19 +122,19 @@
         "<polygon fill=\"black\" stroke=\"black\" points=\"161.511,-30.9167 154.101,-32.9203 158.055,-30.3633 154.599,-29.8099 154.599,-29.8099 154.599,-29.8099 158.055,-30.3633 155.097,-26.6995 161.511,-30.9167 161.511,-30.9167\"/>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;0 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
+        "<g id=\"edge5\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M90.2208,-73.0373C88.9189,-82.8579 91.0453,-92 96.6,-92 100.766,-92 103.004,-86.8576 103.313,-80.1433\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"102.979,-73.0373 106.454,-79.8818 103.143,-76.5335 103.308,-80.0296 103.308,-80.0296 103.308,-80.0296 103.143,-76.5335 100.161,-80.1774 102.979,-73.0373 102.979,-73.0373\"/>\n",
         "<text text-anchor=\"start\" x=\"93.1\" y=\"-95.8\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;1 -->\n",
-        "<g id=\"edge5\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
+        "<g id=\"edge6\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M114.383,-51.4416C126.191,-48.2346 142.151,-43.8996 155.206,-40.3538\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"162.115,-38.4773 156.186,-43.352 158.738,-39.3947 155.36,-40.3121 155.36,-40.3121 155.36,-40.3121 158.738,-39.3947 154.534,-37.2723 162.115,-38.4773 162.115,-38.4773\"/>\n",
         "<text text-anchor=\"start\" x=\"132.6\" y=\"-50.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;1 -->\n",
-        "<g id=\"edge6\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
+        "<g id=\"edge4\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M172.569,-50.6641C171.006,-60.625 173.35,-70 179.6,-70 184.288,-70 186.778,-64.7266 187.071,-57.8876\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"186.631,-50.6641 190.201,-57.4598 186.844,-54.1576 187.056,-57.6511 187.056,-57.6511 187.056,-57.6511 186.844,-54.1576 183.912,-57.8425 186.631,-50.6641 186.631,-50.6641\"/>\n",
         "<text text-anchor=\"start\" x=\"175.1\" y=\"-88.8\" font-family=\"Lato\" font-size=\"14.00\">b</text>\n",
@@ -144,7 +144,7 @@
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f7620378330> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7faa50350420> >"
        ]
       }
      ],
@@ -189,68 +189,73 @@
         "<!-- Generated by graphviz version 2.38.0 (20140413.2041)\n",
         " -->\n",
         "<!-- Title: G Pages: 1 -->\n",
-        "<svg width=\"154pt\" height=\"192pt\"\n",
-        " viewBox=\"0.00 0.00 153.60 192.00\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
-        "<g id=\"graph0\" class=\"graph\" transform=\"scale(1 1) rotate(0) translate(4 188)\">\n",
+        "<svg width=\"244pt\" height=\"210pt\"\n",
+        " viewBox=\"0.00 0.00 243.90 210.00\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
+        "<g id=\"graph0\" class=\"graph\" transform=\"scale(1 1) rotate(0) translate(4 206)\">\n",
         "<title>G</title>\n",
-        "<polygon fill=\"white\" stroke=\"none\" points=\"-4,4 -4,-188 149.6,-188 149.6,4 -4,4\"/>\n",
-        "<text text-anchor=\"start\" x=\"50.3\" y=\"-169.8\" font-family=\"Lato\" font-size=\"14.00\">Fin(</text>\n",
-        "<text text-anchor=\"start\" x=\"75.3\" y=\"-169.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
-        "<text text-anchor=\"start\" x=\"91.3\" y=\"-169.8\" font-family=\"Lato\" font-size=\"14.00\">)</text>\n",
+        "<polygon fill=\"white\" stroke=\"none\" points=\"-4,4 -4,-206 239.895,-206 239.895,4 -4,4\"/>\n",
+        "<text text-anchor=\"start\" x=\"95.4476\" y=\"-187.8\" font-family=\"Lato\" font-size=\"14.00\">Fin(</text>\n",
+        "<text text-anchor=\"start\" x=\"120.448\" y=\"-187.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
+        "<text text-anchor=\"start\" x=\"136.448\" y=\"-187.8\" font-family=\"Lato\" font-size=\"14.00\">)</text>\n",
         "<g id=\"clust1\" class=\"cluster\"><title>cluster_0</title>\n",
-        "<polygon fill=\"none\" stroke=\"green\" points=\"85.6,-8 85.6,-93 137.6,-93 137.6,-8 85.6,-8\"/>\n",
+        "<polygon fill=\"none\" stroke=\"green\" points=\"70.6,-8 70.6,-93 122.6,-93 122.6,-8 70.6,-8\"/>\n",
         "</g>\n",
         "<g id=\"clust2\" class=\"cluster\"><title>cluster_1</title>\n",
-        "<polygon fill=\"none\" stroke=\"red\" points=\"85.6,-101 85.6,-153 137.6,-153 137.6,-101 85.6,-101\"/>\n",
+        "<polygon fill=\"none\" stroke=\"red\" points=\"70.6,-101 70.6,-171 227.895,-171 227.895,-101 70.6,-101\"/>\n",
         "</g>\n",
         "<!-- I -->\n",
         "<!-- &#45;1 -->\n",
         "<g id=\"node2\" class=\"node\"><title>&#45;1</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"39.8\" cy=\"-82\" rx=\"1.8\" ry=\"1.8\"/>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"39.8\" cy=\"-90\" rx=\"1.8\" ry=\"1.8\"/>\n",
         "</g>\n",
         "<!-- I&#45;&gt;&#45;1 -->\n",
         "<g id=\"edge1\" class=\"edge\"><title>I&#45;&gt;&#45;1</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M1.10844,-82C2.6468,-82 20.196,-82 30.7973,-82\"/>\n",
-        "<polygon fill=\"none\" stroke=\"black\" points=\"30.9213,-84.4501 37.9213,-82 30.9212,-79.5501 30.9213,-84.4501\"/>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M1.10844,-90C2.6468,-90 20.196,-90 30.7973,-90\"/>\n",
+        "<polygon fill=\"none\" stroke=\"black\" points=\"30.9213,-92.4501 37.9213,-90 30.9212,-87.5501 30.9213,-92.4501\"/>\n",
         "</g>\n",
         "<!-- 0 -->\n",
         "<g id=\"node3\" class=\"node\"><title>0</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"111.6\" cy=\"-127\" rx=\"18\" ry=\"18\"/>\n",
-        "<text text-anchor=\"middle\" x=\"111.6\" y=\"-123.3\" font-family=\"Lato\" font-size=\"14.00\">0</text>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"96.6\" cy=\"-130\" rx=\"18\" ry=\"18\"/>\n",
+        "<text text-anchor=\"middle\" x=\"96.6\" y=\"-126.3\" font-family=\"Lato\" font-size=\"14.00\">0</text>\n",
         "</g>\n",
         "<!-- &#45;1&#45;&gt;0 -->\n",
         "<g id=\"edge2\" class=\"edge\"><title>&#45;1&#45;&gt;0</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M41.2389,-83.4339C42.8255,-88.3703 48.7502,-104.807 59.6,-113 67.3475,-118.85 77.3952,-122.256 86.5214,-124.239\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"93.5814,-125.543 86.1255,-127.369 90.1396,-124.907 86.6979,-124.272 86.6979,-124.272 86.6979,-124.272 90.1396,-124.907 87.2703,-121.174 93.5814,-125.543 93.5814,-125.543\"/>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M41.7512,-90.6943C45.7938,-93.6451 61.9639,-105.448 75.5392,-115.357\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"81.541,-119.738 74.0298,-118.155 78.714,-117.674 75.887,-115.611 75.887,-115.611 75.887,-115.611 78.714,-117.674 77.7442,-113.067 81.541,-119.738 81.541,-119.738\"/>\n",
         "</g>\n",
         "<!-- 1 -->\n",
         "<g id=\"node4\" class=\"node\"><title>1</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"111.6\" cy=\"-34\" rx=\"18\" ry=\"18\"/>\n",
-        "<text text-anchor=\"middle\" x=\"111.6\" y=\"-30.3\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"96.6\" cy=\"-34\" rx=\"18\" ry=\"18\"/>\n",
+        "<text text-anchor=\"middle\" x=\"96.6\" y=\"-30.3\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- &#45;1&#45;&gt;1 -->\n",
         "<g id=\"edge3\" class=\"edge\"><title>&#45;1&#45;&gt;1</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M41.5839,-81.4609C46.3474,-78.1852 71.8242,-60.6653 90.4426,-47.8618\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"96.4539,-43.728 92.471,-50.2899 93.57,-45.7112 90.6861,-47.6944 90.6861,-47.6944 90.6861,-47.6944 93.57,-45.7112 88.9012,-45.0989 96.4539,-43.728 96.4539,-43.728\"/>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M41.7512,-89.028C46.0802,-84.6041 64.3165,-65.9685 78.3809,-51.5962\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"83.3402,-46.5283 80.6957,-53.7345 80.8923,-49.0298 78.4443,-51.5314 78.4443,-51.5314 78.4443,-51.5314 80.8923,-49.0298 76.1929,-49.3282 83.3402,-46.5283 83.3402,-46.5283\"/>\n",
         "</g>\n",
-        "<!-- 0&#45;&gt;&#45;1 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>0&#45;&gt;&#45;1</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M98.8419,-113.981C94.4601,-108.857 89.5866,-102.816 85.6,-97 80.4256,-89.4515 83.4876,-83.6411 75.6,-79 67.3683,-74.1565 56.0932,-76.4083 48.6353,-78.8582\"/>\n",
-        "<polygon fill=\"none\" stroke=\"black\" points=\"47.3759,-76.7198 41.7465,-81.5482 49.1582,-81.2841 47.3759,-76.7198\"/>\n",
-        "<text text-anchor=\"start\" x=\"64.1\" y=\"-97.8\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
-        "<text text-anchor=\"start\" x=\"59.6\" y=\"-82.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
+        "<!-- &#45;1.1 -->\n",
+        "<g id=\"node5\" class=\"node\"><title>&#45;1.1</title>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"193.248\" cy=\"-136\" rx=\"26.7961\" ry=\"26.7961\"/>\n",
+        "<text text-anchor=\"middle\" x=\"193.248\" y=\"-132.3\" font-family=\"Lato\" font-size=\"14.00\">&#45;1.1</text>\n",
+        "</g>\n",
+        "<!-- 0&#45;&gt;&#45;1.1 -->\n",
+        "<g id=\"edge5\" class=\"edge\"><title>0&#45;&gt;&#45;1.1</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M114.96,-131.1C127.343,-131.885 144.375,-132.965 159.3,-133.911\"/>\n",
+        "<polygon fill=\"none\" stroke=\"black\" points=\"159.287,-136.365 166.428,-134.363 159.597,-131.475 159.287,-136.365\"/>\n",
+        "<text text-anchor=\"start\" x=\"137.1\" y=\"-151.8\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
+        "<text text-anchor=\"start\" x=\"132.6\" y=\"-136.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;1 -->\n",
-        "<g id=\"edge5\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M103.932,-50.2903C102.083,-60.3892 104.639,-70 111.6,-70 116.821,-70 119.564,-64.5939 119.829,-57.6304\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"119.268,-50.2903 122.942,-57.0299 119.535,-53.7801 119.801,-57.2699 119.801,-57.2699 119.801,-57.2699 119.535,-53.7801 116.66,-57.5099 119.268,-50.2903 119.268,-50.2903\"/>\n",
-        "<text text-anchor=\"start\" x=\"107.1\" y=\"-73.8\" font-family=\"Lato\" font-size=\"14.00\">b</text>\n",
+        "<g id=\"edge4\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M90.2208,-51.0373C88.9189,-60.8579 91.0453,-70 96.6,-70 100.766,-70 103.004,-64.8576 103.313,-58.1433\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"102.979,-51.0373 106.454,-57.8818 103.143,-54.5335 103.308,-58.0296 103.308,-58.0296 103.308,-58.0296 103.143,-54.5335 100.161,-58.1774 102.979,-51.0373 102.979,-51.0373\"/>\n",
+        "<text text-anchor=\"start\" x=\"92.1\" y=\"-73.8\" font-family=\"Lato\" font-size=\"14.00\">b</text>\n",
         "</g>\n",
         "</g>\n",
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f7620378870> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7faa50350810> >"
        ]
       }
      ],
@@ -276,12 +281,14 @@
       "''')"
      ],
      "language": "python",
-     "metadata": {},
+     "metadata": {
+      "scrolled": true
+     },
      "outputs": [
       {
        "metadata": {},
        "output_type": "pyout",
-       "prompt_number": 4,
+       "prompt_number": 5,
        "svg": [
         "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n",
         "<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\"\n",
@@ -289,75 +296,80 @@
         "<!-- Generated by graphviz version 2.38.0 (20140413.2041)\n",
         " -->\n",
         "<!-- Title: G Pages: 1 -->\n",
-        "<svg width=\"181pt\" height=\"170pt\"\n",
-        " viewBox=\"0.00 0.00 181.00 169.80\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
-        "<g id=\"graph0\" class=\"graph\" transform=\"scale(1 1) rotate(0) translate(4 165.8)\">\n",
+        "<svg width=\"320pt\" height=\"147pt\"\n",
+        " viewBox=\"0.00 0.00 319.90 147.00\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
+        "<g id=\"graph0\" class=\"graph\" transform=\"scale(1 1) rotate(0) translate(4 143)\">\n",
         "<title>G</title>\n",
-        "<polygon fill=\"white\" stroke=\"none\" points=\"-4,4 -4,-165.8 177,-165.8 177,4 -4,4\"/>\n",
-        "<text text-anchor=\"start\" x=\"64\" y=\"-147.6\" font-family=\"Lato\" font-size=\"14.00\">Fin(</text>\n",
-        "<text text-anchor=\"start\" x=\"89\" y=\"-147.6\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
-        "<text text-anchor=\"start\" x=\"105\" y=\"-147.6\" font-family=\"Lato\" font-size=\"14.00\">)</text>\n",
+        "<polygon fill=\"white\" stroke=\"none\" points=\"-4,4 -4,-143 315.895,-143 315.895,4 -4,4\"/>\n",
+        "<text text-anchor=\"start\" x=\"133.448\" y=\"-124.8\" font-family=\"Lato\" font-size=\"14.00\">Fin(</text>\n",
+        "<text text-anchor=\"start\" x=\"158.448\" y=\"-124.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
+        "<text text-anchor=\"start\" x=\"174.448\" y=\"-124.8\" font-family=\"Lato\" font-size=\"14.00\">)</text>\n",
         "<g id=\"clust1\" class=\"cluster\"><title>cluster_0</title>\n",
-        "<polygon fill=\"none\" stroke=\"green\" points=\"30,-8 30,-108 165,-108 165,-8 30,-8\"/>\n",
+        "<polygon fill=\"none\" stroke=\"green\" points=\"70.6,-8 70.6,-108 303.895,-108 303.895,-8 70.6,-8\"/>\n",
         "</g>\n",
         "<!-- I -->\n",
         "<!-- &#45;1 -->\n",
         "<g id=\"node2\" class=\"node\"><title>&#45;1</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"56\" cy=\"-137\" rx=\"1.8\" ry=\"1.8\"/>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"39.8\" cy=\"-5\" rx=\"1.8\" ry=\"1.8\"/>\n",
         "</g>\n",
         "<!-- I&#45;&gt;&#45;1 -->\n",
         "<g id=\"edge1\" class=\"edge\"><title>I&#45;&gt;&#45;1</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M1.15491,-137C3.52733,-137 32.5548,-137 46.9758,-137\"/>\n",
-        "<polygon fill=\"none\" stroke=\"black\" points=\"47.1189,-139.45 54.1189,-137 47.1188,-134.55 47.1189,-139.45\"/>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M1.10844,-5C2.6468,-5 20.196,-5 30.7973,-5\"/>\n",
+        "<polygon fill=\"none\" stroke=\"black\" points=\"30.9213,-7.4501 37.9213,-5 30.9212,-2.5501 30.9213,-7.4501\"/>\n",
         "</g>\n",
         "<!-- 0 -->\n",
         "<g id=\"node3\" class=\"node\"><title>0</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"56\" cy=\"-34\" rx=\"18\" ry=\"18\"/>\n",
-        "<text text-anchor=\"middle\" x=\"56\" y=\"-30.3\" font-family=\"Lato\" font-size=\"14.00\">0</text>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"96.6\" cy=\"-34\" rx=\"18\" ry=\"18\"/>\n",
+        "<text text-anchor=\"middle\" x=\"96.6\" y=\"-30.3\" font-family=\"Lato\" font-size=\"14.00\">0</text>\n",
         "</g>\n",
         "<!-- &#45;1&#45;&gt;0 -->\n",
         "<g id=\"edge2\" class=\"edge\"><title>&#45;1&#45;&gt;0</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M56,-135.01C56,-109.75 56,-84.4902 56,-59.2301\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"56,-52.1055 59.1501,-59.1054 56,-55.6055 56.0001,-59.1055 56.0001,-59.1055 56.0001,-59.1055 56,-55.6055 52.8501,-59.1055 56,-52.1055 56,-52.1055\"/>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M41.7512,-5.50335C45.6352,-7.55878 60.7141,-15.5385 73.9308,-22.5327\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"80.2121,-25.8568 72.5516,-25.3667 77.1186,-24.2197 74.025,-22.5826 74.025,-22.5826 74.025,-22.5826 77.1186,-24.2197 75.4985,-19.7984 80.2121,-25.8568 80.2121,-25.8568\"/>\n",
         "</g>\n",
         "<!-- 1 -->\n",
         "<g id=\"node4\" class=\"node\"><title>1</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"139\" cy=\"-82\" rx=\"18\" ry=\"18\"/>\n",
-        "<text text-anchor=\"middle\" x=\"139\" y=\"-78.3\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"179.6\" cy=\"-34\" rx=\"18\" ry=\"18\"/>\n",
+        "<text text-anchor=\"middle\" x=\"179.6\" y=\"-30.3\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- &#45;1&#45;&gt;1 -->\n",
         "<g id=\"edge3\" class=\"edge\"><title>&#45;1&#45;&gt;1</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M58.1975,-136.505C63.6262,-134.235 86.3798,-124.441 103,-113 108.892,-108.944 114.875,-104.007 120.188,-99.2761\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"125.655,-94.275 122.616,-101.324 123.072,-96.6375 120.49,-99.0001 120.49,-99.0001 120.49,-99.0001 123.072,-96.6375 118.364,-96.676 125.655,-94.275 125.655,-94.275\"/>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M41.858,-4.88357C48.5396,-4.17795 85.5371,-0.709466 114.6,-7 129.318,-10.1857 144.906,-16.6879 157.013,-22.5131\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"163.353,-25.6543 155.682,-25.3692 160.217,-24.1005 157.081,-22.5466 157.081,-22.5466 157.081,-22.5466 160.217,-24.1005 158.479,-19.7241 163.353,-25.6543 163.353,-25.6543\"/>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;0 -->\n",
         "<g id=\"edge4\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M49.6208,-51.0373C48.3189,-60.8579 50.4453,-70 56,-70 60.166,-70 62.4036,-64.8576 62.7128,-58.1433\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"62.3792,-51.0373 65.8541,-57.8818 62.5434,-54.5335 62.7076,-58.0296 62.7076,-58.0296 62.7076,-58.0296 62.5434,-54.5335 59.561,-58.1774 62.3792,-51.0373 62.3792,-51.0373\"/>\n",
-        "<text text-anchor=\"start\" x=\"52.5\" y=\"-88.8\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
-        "<text text-anchor=\"start\" x=\"48\" y=\"-73.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M90.2208,-51.0373C88.9189,-60.8579 91.0453,-70 96.6,-70 100.766,-70 103.004,-64.8576 103.313,-58.1433\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"102.979,-51.0373 106.454,-57.8818 103.143,-54.5335 103.308,-58.0296 103.308,-58.0296 103.308,-58.0296 103.143,-54.5335 100.161,-58.1774 102.979,-51.0373 102.979,-51.0373\"/>\n",
+        "<text text-anchor=\"start\" x=\"93.1\" y=\"-88.8\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
+        "<text text-anchor=\"start\" x=\"88.6\" y=\"-73.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;1 -->\n",
         "<g id=\"edge5\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M72.6567,-41.0787C81.7089,-45.355 93.2089,-51.105 103,-57 108.128,-60.0874 113.476,-63.6923 118.403,-67.188\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"124.372,-71.5104 116.855,-69.9558 121.537,-69.4575 118.702,-67.4046 118.702,-67.4046 118.702,-67.4046 121.537,-69.4575 120.55,-64.8533 124.372,-71.5104 124.372,-71.5104\"/>\n",
-        "<text text-anchor=\"start\" x=\"92\" y=\"-60.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M114.778,-34C126.269,-34 141.559,-34 154.293,-34\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"161.447,-34 154.447,-37.1501 157.947,-34 154.447,-34.0001 154.447,-34.0001 154.447,-34.0001 157.947,-34 154.447,-30.8501 161.447,-34 161.447,-34\"/>\n",
+        "<text text-anchor=\"start\" x=\"132.6\" y=\"-37.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "</g>\n",
-        "<!-- 1&#45;&gt;&#45;1 -->\n",
-        "<g id=\"edge6\" class=\"edge\"><title>1&#45;&gt;&#45;1</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M120.788,-83.8666C111.67,-85.4769 100.608,-88.4653 92,-94 84.4423,-98.8591 69.2944,-119.499 61.6458,-130.319\"/>\n",
-        "<polygon fill=\"none\" stroke=\"black\" points=\"59.6115,-128.953 57.6175,-136.096 63.6309,-131.756 59.6115,-128.953\"/>\n",
-        "<text text-anchor=\"start\" x=\"93\" y=\"-97.8\" font-family=\"Lato\" font-size=\"14.00\">b</text>\n",
+        "<!-- &#45;1.0 -->\n",
+        "<g id=\"node5\" class=\"node\"><title>&#45;1.0</title>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"269.248\" cy=\"-43\" rx=\"26.7961\" ry=\"26.7961\"/>\n",
+        "<text text-anchor=\"middle\" x=\"269.248\" y=\"-39.3\" font-family=\"Lato\" font-size=\"14.00\">&#45;1.0</text>\n",
+        "</g>\n",
+        "<!-- 1&#45;&gt;&#45;1.0 -->\n",
+        "<g id=\"edge6\" class=\"edge\"><title>1&#45;&gt;&#45;1.0</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M197.916,-35.7781C208.593,-36.8744 222.631,-38.3159 235.356,-39.6225\"/>\n",
+        "<polygon fill=\"none\" stroke=\"black\" points=\"235.447,-42.0947 242.661,-40.3726 235.948,-37.2203 235.447,-42.0947\"/>\n",
+        "<text text-anchor=\"start\" x=\"215.6\" y=\"-41.8\" font-family=\"Lato\" font-size=\"14.00\">b</text>\n",
         "</g>\n",
         "</g>\n",
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f7620378390> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7faa50350870> >"
        ]
       }
      ],
-     "prompt_number": 4
+     "prompt_number": 5
     },
     {
      "cell_type": "code",
@@ -384,7 +396,7 @@
       {
        "metadata": {},
        "output_type": "pyout",
-       "prompt_number": 5,
+       "prompt_number": 6,
        "svg": [
         "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n",
         "<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\"\n",
@@ -392,75 +404,75 @@
         "<!-- Generated by graphviz version 2.38.0 (20140413.2041)\n",
         " -->\n",
         "<!-- Title: G Pages: 1 -->\n",
-        "<svg width=\"186pt\" height=\"155pt\"\n",
-        " viewBox=\"0.00 0.00 186.00 154.80\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
-        "<g id=\"graph0\" class=\"graph\" transform=\"scale(1 1) rotate(0) translate(4 150.8)\">\n",
+        "<svg width=\"235pt\" height=\"132pt\"\n",
+        " viewBox=\"0.00 0.00 234.60 132.00\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
+        "<g id=\"graph0\" class=\"graph\" transform=\"scale(1 1) rotate(0) translate(4 128)\">\n",
         "<title>G</title>\n",
-        "<polygon fill=\"white\" stroke=\"none\" points=\"-4,4 -4,-150.8 182,-150.8 182,4 -4,4\"/>\n",
-        "<text text-anchor=\"start\" x=\"66.5\" y=\"-132.6\" font-family=\"Lato\" font-size=\"14.00\">Fin(</text>\n",
-        "<text text-anchor=\"start\" x=\"91.5\" y=\"-132.6\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
-        "<text text-anchor=\"start\" x=\"107.5\" y=\"-132.6\" font-family=\"Lato\" font-size=\"14.00\">)</text>\n",
+        "<polygon fill=\"white\" stroke=\"none\" points=\"-4,4 -4,-128 230.6,-128 230.6,4 -4,4\"/>\n",
+        "<text text-anchor=\"start\" x=\"90.8\" y=\"-109.8\" font-family=\"Lato\" font-size=\"14.00\">Fin(</text>\n",
+        "<text text-anchor=\"start\" x=\"115.8\" y=\"-109.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
+        "<text text-anchor=\"start\" x=\"131.8\" y=\"-109.8\" font-family=\"Lato\" font-size=\"14.00\">)</text>\n",
         "<g id=\"clust1\" class=\"cluster\"><title>cluster_0</title>\n",
-        "<polygon fill=\"none\" stroke=\"green\" points=\"30,-30.8 30,-115.8 170,-115.8 170,-30.8 30,-30.8\"/>\n",
+        "<polygon fill=\"none\" stroke=\"green\" points=\"30,-8 30,-93 218.6,-93 218.6,-8 30,-8\"/>\n",
         "</g>\n",
         "<!-- I -->\n",
         "<!-- 0 -->\n",
         "<g id=\"node2\" class=\"node\"><title>0</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"56\" cy=\"-56.8\" rx=\"18\" ry=\"18\"/>\n",
-        "<text text-anchor=\"middle\" x=\"56\" y=\"-53.1\" font-family=\"Lato\" font-size=\"14.00\">0</text>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"56\" cy=\"-34\" rx=\"18\" ry=\"18\"/>\n",
+        "<text text-anchor=\"middle\" x=\"56\" y=\"-30.3\" font-family=\"Lato\" font-size=\"14.00\">0</text>\n",
         "</g>\n",
         "<!-- I&#45;&gt;0 -->\n",
         "<g id=\"edge1\" class=\"edge\"><title>I&#45;&gt;0</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M1.15491,-56.8C2.79388,-56.8 17.1543,-56.8 30.6317,-56.8\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"37.9419,-56.8 30.9419,-59.9501 34.4419,-56.8 30.9419,-56.8001 30.9419,-56.8001 30.9419,-56.8001 34.4419,-56.8 30.9418,-53.6501 37.9419,-56.8 37.9419,-56.8\"/>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M1.15491,-34C2.79388,-34 17.1543,-34 30.6317,-34\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"37.9419,-34 30.9419,-37.1501 34.4419,-34 30.9419,-34.0001 30.9419,-34.0001 30.9419,-34.0001 34.4419,-34 30.9418,-30.8501 37.9419,-34 37.9419,-34\"/>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;0 -->\n",
         "<g id=\"edge2\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M49.6208,-73.8373C48.3189,-83.6579 50.4453,-92.8 56,-92.8 60.166,-92.8 62.4036,-87.6576 62.7128,-80.9433\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"62.3792,-73.8373 65.8541,-80.6818 62.5434,-77.3335 62.7076,-80.8296 62.7076,-80.8296 62.7076,-80.8296 62.5434,-77.3335 59.561,-80.9774 62.3792,-73.8373 62.3792,-73.8373\"/>\n",
-        "<text text-anchor=\"start\" x=\"52.5\" y=\"-96.6\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M49.6208,-51.0373C48.3189,-60.8579 50.4453,-70 56,-70 60.166,-70 62.4036,-64.8576 62.7128,-58.1433\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"62.3792,-51.0373 65.8541,-57.8818 62.5434,-54.5335 62.7076,-58.0296 62.7076,-58.0296 62.7076,-58.0296 62.5434,-54.5335 59.561,-58.1774 62.3792,-51.0373 62.3792,-51.0373\"/>\n",
+        "<text text-anchor=\"start\" x=\"52.5\" y=\"-73.8\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
         "</g>\n",
         "<!-- 1 -->\n",
         "<g id=\"node3\" class=\"node\"><title>1</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"144\" cy=\"-56.8\" rx=\"18\" ry=\"18\"/>\n",
-        "<text text-anchor=\"middle\" x=\"144\" y=\"-53.1\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"144\" cy=\"-34\" rx=\"18\" ry=\"18\"/>\n",
+        "<text text-anchor=\"middle\" x=\"144\" y=\"-30.3\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;1 -->\n",
         "<g id=\"edge3\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M74.4034,-56.8C87.1928,-56.8 104.732,-56.8 118.874,-56.8\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"125.916,-56.8 118.916,-59.9501 122.416,-56.8 118.916,-56.8001 118.916,-56.8001 118.916,-56.8001 122.416,-56.8 118.916,-53.6501 125.916,-56.8 125.916,-56.8\"/>\n",
-        "<text text-anchor=\"start\" x=\"94.5\" y=\"-75.6\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
-        "<text text-anchor=\"start\" x=\"92\" y=\"-60.6\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M74.4034,-34C87.1928,-34 104.732,-34 118.874,-34\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"125.916,-34 118.916,-37.1501 122.416,-34 118.916,-34.0001 118.916,-34.0001 118.916,-34.0001 122.416,-34 118.916,-30.8501 125.916,-34 125.916,-34\"/>\n",
+        "<text text-anchor=\"start\" x=\"94.5\" y=\"-52.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
+        "<text text-anchor=\"start\" x=\"92\" y=\"-37.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
         "</g>\n",
-        "<!-- &#45;1 -->\n",
-        "<g id=\"node4\" class=\"node\"><title>&#45;1</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"56\" cy=\"-1.8\" rx=\"1.8\" ry=\"1.8\"/>\n",
+        "<!-- &#45;1.0 -->\n",
+        "<g id=\"node4\" class=\"node\"><title>&#45;1.0</title>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"208.8\" cy=\"-55\" rx=\"1.8\" ry=\"1.8\"/>\n",
         "</g>\n",
-        "<!-- 1&#45;&gt;&#45;1 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>1&#45;&gt;&#45;1</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M128.216,-47.3452C109.582,-35.428 78.2908,-15.4162 64.2282,-6.42267\"/>\n",
-        "<polygon fill=\"none\" stroke=\"black\" points=\"65.183,-4.12514 57.9658,-2.41768 62.543,-8.25315 65.183,-4.12514\"/>\n",
-        "<text text-anchor=\"start\" x=\"95.5\" y=\"-38.6\" font-family=\"Lato\" font-size=\"14.00\">b</text>\n",
+        "<!-- 1&#45;&gt;&#45;1.0 -->\n",
+        "<g id=\"edge4\" class=\"edge\"><title>1&#45;&gt;&#45;1.0</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M161.97,-31.3847C170.435,-30.8121 180.626,-31.2653 189,-35 195.022,-37.6859 200.027,-43.3116 203.355,-47.9143\"/>\n",
+        "<polygon fill=\"none\" stroke=\"black\" points=\"201.413,-49.4256 207.255,-53.9948 205.538,-46.78 201.413,-49.4256\"/>\n",
+        "<text text-anchor=\"start\" x=\"180\" y=\"-38.8\" font-family=\"Lato\" font-size=\"14.00\">b</text>\n",
         "</g>\n",
-        "<!-- &#45;1&#45;&gt;0 -->\n",
-        "<g id=\"edge5\" class=\"edge\"><title>&#45;1&#45;&gt;0</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M56,-3.94844C56,-13.1613 56,-22.3742 56,-31.5871\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"56,-38.6323 52.8501,-31.6322 56,-35.1323 56.0001,-31.6323 56.0001,-31.6323 56.0001,-31.6323 56,-35.1323 59.1501,-31.6323 56,-38.6323 56,-38.6323\"/>\n",
+        "<!-- &#45;1.0&#45;&gt;0 -->\n",
+        "<g id=\"edge5\" class=\"edge\"><title>&#45;1.0&#45;&gt;0</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M207.029,-55.3291C199.425,-58.5247 137.182,-83.5412 92,-66 84.8621,-63.2288 78.2913,-58.2479 72.8175,-53.0285\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"67.7291,-47.8027 74.8694,-50.6204 70.1708,-50.3103 72.6125,-52.8179 72.6125,-52.8179 72.6125,-52.8179 70.1708,-50.3103 70.3556,-55.0155 67.7291,-47.8027 67.7291,-47.8027\"/>\n",
         "</g>\n",
-        "<!-- &#45;1&#45;&gt;1 -->\n",
-        "<g id=\"edge6\" class=\"edge\"><title>&#45;1&#45;&gt;1</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M58.3605,-2.07433C64.5216,-3.36203 90.2737,-9.23561 108,-20.8 115.043,-25.3947 121.748,-31.6386 127.37,-37.6363\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"132.206,-43.0208 125.185,-39.9183 129.867,-40.4171 127.528,-37.8133 127.528,-37.8133 127.528,-37.8133 129.867,-40.4171 129.872,-35.7083 132.206,-43.0208 132.206,-43.0208\"/>\n",
+        "<!-- &#45;1.0&#45;&gt;1 -->\n",
+        "<g id=\"edge6\" class=\"edge\"><title>&#45;1.0&#45;&gt;1</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M206.716,-54.9037C202.95,-54.5484 190.109,-53.1643 180,-50 175.648,-48.6378 171.129,-46.8647 166.841,-44.9966\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"160.351,-42.0283 168.027,-42.0751 163.534,-43.484 166.717,-44.9397 166.717,-44.9397 166.717,-44.9397 163.534,-43.484 165.407,-47.8043 160.351,-42.0283 160.351,-42.0283\"/>\n",
         "</g>\n",
         "</g>\n",
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f76203783c0> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7faa503508a0> >"
        ]
       }
      ],
-     "prompt_number": 5
+     "prompt_number": 6
     },
     {
      "cell_type": "code",
@@ -487,7 +499,7 @@
       {
        "metadata": {},
        "output_type": "pyout",
-       "prompt_number": 6,
+       "prompt_number": 7,
        "svg": [
         "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n",
         "<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\"\n",
@@ -495,76 +507,76 @@
         "<!-- Generated by graphviz version 2.38.0 (20140413.2041)\n",
         " -->\n",
         "<!-- Title: G Pages: 1 -->\n",
-        "<svg width=\"186pt\" height=\"170pt\"\n",
-        " viewBox=\"0.00 0.00 186.00 169.80\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
-        "<g id=\"graph0\" class=\"graph\" transform=\"scale(1 1) rotate(0) translate(4 165.8)\">\n",
+        "<svg width=\"237pt\" height=\"147pt\"\n",
+        " viewBox=\"0.00 0.00 236.60 147.00\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
+        "<g id=\"graph0\" class=\"graph\" transform=\"scale(1 1) rotate(0) translate(4 143)\">\n",
         "<title>G</title>\n",
-        "<polygon fill=\"white\" stroke=\"none\" points=\"-4,4 -4,-165.8 182,-165.8 182,4 -4,4\"/>\n",
-        "<text text-anchor=\"start\" x=\"66.5\" y=\"-147.6\" font-family=\"Lato\" font-size=\"14.00\">Fin(</text>\n",
-        "<text text-anchor=\"start\" x=\"91.5\" y=\"-147.6\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
-        "<text text-anchor=\"start\" x=\"107.5\" y=\"-147.6\" font-family=\"Lato\" font-size=\"14.00\">)</text>\n",
+        "<polygon fill=\"white\" stroke=\"none\" points=\"-4,4 -4,-143 232.6,-143 232.6,4 -4,4\"/>\n",
+        "<text text-anchor=\"start\" x=\"91.8\" y=\"-124.8\" font-family=\"Lato\" font-size=\"14.00\">Fin(</text>\n",
+        "<text text-anchor=\"start\" x=\"116.8\" y=\"-124.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
+        "<text text-anchor=\"start\" x=\"132.8\" y=\"-124.8\" font-family=\"Lato\" font-size=\"14.00\">)</text>\n",
         "<g id=\"clust1\" class=\"cluster\"><title>cluster_0</title>\n",
-        "<polygon fill=\"none\" stroke=\"orange\" points=\"30,-30.8 30,-130.8 170,-130.8 170,-30.8 30,-30.8\"/>\n",
+        "<polygon fill=\"none\" stroke=\"orange\" points=\"30,-8 30,-108 220.6,-108 220.6,-8 30,-8\"/>\n",
         "</g>\n",
         "<!-- I -->\n",
         "<!-- 0 -->\n",
         "<g id=\"node2\" class=\"node\"><title>0</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"56\" cy=\"-56.8\" rx=\"18\" ry=\"18\"/>\n",
-        "<text text-anchor=\"middle\" x=\"56\" y=\"-53.1\" font-family=\"Lato\" font-size=\"14.00\">0</text>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"56\" cy=\"-34\" rx=\"18\" ry=\"18\"/>\n",
+        "<text text-anchor=\"middle\" x=\"56\" y=\"-30.3\" font-family=\"Lato\" font-size=\"14.00\">0</text>\n",
         "</g>\n",
         "<!-- I&#45;&gt;0 -->\n",
         "<g id=\"edge1\" class=\"edge\"><title>I&#45;&gt;0</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M1.15491,-56.8C2.79388,-56.8 17.1543,-56.8 30.6317,-56.8\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"37.9419,-56.8 30.9419,-59.9501 34.4419,-56.8 30.9419,-56.8001 30.9419,-56.8001 30.9419,-56.8001 34.4419,-56.8 30.9418,-53.6501 37.9419,-56.8 37.9419,-56.8\"/>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M1.15491,-34C2.79388,-34 17.1543,-34 30.6317,-34\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"37.9419,-34 30.9419,-37.1501 34.4419,-34 30.9419,-34.0001 30.9419,-34.0001 30.9419,-34.0001 34.4419,-34 30.9418,-30.8501 37.9419,-34 37.9419,-34\"/>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;0 -->\n",
         "<g id=\"edge2\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M49.6208,-73.8373C48.3189,-83.6579 50.4453,-92.8 56,-92.8 60.166,-92.8 62.4036,-87.6576 62.7128,-80.9433\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"62.3792,-73.8373 65.8541,-80.6818 62.5434,-77.3335 62.7076,-80.8296 62.7076,-80.8296 62.7076,-80.8296 62.5434,-77.3335 59.561,-80.9774 62.3792,-73.8373 62.3792,-73.8373\"/>\n",
-        "<text text-anchor=\"start\" x=\"52.5\" y=\"-111.6\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
-        "<text text-anchor=\"start\" x=\"48\" y=\"-96.6\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M49.6208,-51.0373C48.3189,-60.8579 50.4453,-70 56,-70 60.166,-70 62.4036,-64.8576 62.7128,-58.1433\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"62.3792,-51.0373 65.8541,-57.8818 62.5434,-54.5335 62.7076,-58.0296 62.7076,-58.0296 62.7076,-58.0296 62.5434,-54.5335 59.561,-58.1774 62.3792,-51.0373 62.3792,-51.0373\"/>\n",
+        "<text text-anchor=\"start\" x=\"52.5\" y=\"-88.8\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
+        "<text text-anchor=\"start\" x=\"48\" y=\"-73.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
         "</g>\n",
         "<!-- 1 -->\n",
         "<g id=\"node3\" class=\"node\"><title>1</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"144\" cy=\"-56.8\" rx=\"18\" ry=\"18\"/>\n",
-        "<text text-anchor=\"middle\" x=\"144\" y=\"-53.1\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"139\" cy=\"-34\" rx=\"18\" ry=\"18\"/>\n",
+        "<text text-anchor=\"middle\" x=\"139\" y=\"-30.3\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;1 -->\n",
         "<g id=\"edge3\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M74.4034,-56.8C87.1928,-56.8 104.732,-56.8 118.874,-56.8\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"125.916,-56.8 118.916,-59.9501 122.416,-56.8 118.916,-56.8001 118.916,-56.8001 118.916,-56.8001 122.416,-56.8 118.916,-53.6501 125.916,-56.8 125.916,-56.8\"/>\n",
-        "<text text-anchor=\"start\" x=\"94.5\" y=\"-60.6\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M74.178,-34C85.6688,-34 100.959,-34 113.693,-34\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"120.847,-34 113.847,-37.1501 117.347,-34 113.847,-34.0001 113.847,-34.0001 113.847,-34.0001 117.347,-34 113.847,-30.8501 120.847,-34 120.847,-34\"/>\n",
+        "<text text-anchor=\"start\" x=\"92\" y=\"-37.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "</g>\n",
-        "<!-- &#45;1 -->\n",
-        "<g id=\"node4\" class=\"node\"><title>&#45;1</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"56\" cy=\"-1.8\" rx=\"1.8\" ry=\"1.8\"/>\n",
+        "<!-- &#45;1.0 -->\n",
+        "<g id=\"node4\" class=\"node\"><title>&#45;1.0</title>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"210.8\" cy=\"-70\" rx=\"1.8\" ry=\"1.8\"/>\n",
         "</g>\n",
-        "<!-- 1&#45;&gt;&#45;1 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>1&#45;&gt;&#45;1</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M131.685,-43.6003C125.268,-36.7206 116.782,-28.5634 108,-22.8 94.1305,-13.6981 75.6755,-7.29775 65.1938,-4.11103\"/>\n",
-        "<polygon fill=\"none\" stroke=\"black\" points=\"65.7549,-1.72327 58.3508,-2.15071 64.4054,-6.4338 65.7549,-1.72327\"/>\n",
-        "<text text-anchor=\"start\" x=\"95.5\" y=\"-41.6\" font-family=\"Lato\" font-size=\"14.00\">b</text>\n",
-        "<text text-anchor=\"start\" x=\"92\" y=\"-26.6\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
+        "<!-- 1&#45;&gt;&#45;1.0 -->\n",
+        "<g id=\"edge4\" class=\"edge\"><title>1&#45;&gt;&#45;1.0</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M156.81,-30.2475C167.377,-28.8262 180.875,-28.8101 191,-35 200.508,-40.8127 205.503,-53.2288 207.894,-61.5983\"/>\n",
+        "<polygon fill=\"none\" stroke=\"black\" points=\"205.553,-62.3452 209.557,-68.5878 210.32,-61.2108 205.553,-62.3452\"/>\n",
+        "<text text-anchor=\"start\" x=\"178.5\" y=\"-53.8\" font-family=\"Lato\" font-size=\"14.00\">b</text>\n",
+        "<text text-anchor=\"start\" x=\"175\" y=\"-38.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
         "</g>\n",
-        "<!-- &#45;1&#45;&gt;0 -->\n",
-        "<g id=\"edge5\" class=\"edge\"><title>&#45;1&#45;&gt;0</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M56,-3.94844C56,-13.1613 56,-22.3742 56,-31.5871\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"56,-38.6323 52.8501,-31.6322 56,-35.1323 56.0001,-31.6323 56.0001,-31.6323 56.0001,-31.6323 56,-35.1323 59.1501,-31.6323 56,-38.6323 56,-38.6323\"/>\n",
+        "<!-- &#45;1.0&#45;&gt;0 -->\n",
+        "<g id=\"edge5\" class=\"edge\"><title>&#45;1.0&#45;&gt;0</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M208.937,-70.1497C205.016,-70.8087 188.487,-73.3597 175,-72 137.348,-68.204 127.098,-67.1511 92,-53 87.4332,-51.1587 82.6985,-48.8714 78.2428,-46.5287\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"71.9664,-43.1024 79.6199,-43.6917 75.0385,-44.7795 78.1106,-46.4566 78.1106,-46.4566 78.1106,-46.4566 75.0385,-44.7795 76.6012,-49.2214 71.9664,-43.1024 71.9664,-43.1024\"/>\n",
         "</g>\n",
-        "<!-- &#45;1&#45;&gt;1 -->\n",
-        "<g id=\"edge6\" class=\"edge\"><title>&#45;1&#45;&gt;1</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M58.3854,-1.69527C64.6542,-1.28831 90.8043,-0.315741 108,-10.8 117.607,-16.6573 125.513,-26.2081 131.364,-35.0934\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"135.083,-41.0848 128.715,-36.7985 133.237,-38.111 131.391,-35.1373 131.391,-35.1373 131.391,-35.1373 133.237,-38.111 134.068,-33.4761 135.083,-41.0848 135.083,-41.0848\"/>\n",
+        "<!-- &#45;1.0&#45;&gt;1 -->\n",
+        "<g id=\"edge6\" class=\"edge\"><title>&#45;1.0&#45;&gt;1</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M208.886,-70.0545C204.745,-70.2648 187.406,-70.7466 175,-65 168.261,-61.8783 161.868,-57.0279 156.434,-52.0833\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"151.344,-47.1678 158.567,-49.7641 153.862,-49.599 156.379,-52.0302 156.379,-52.0302 156.379,-52.0302 153.862,-49.599 154.191,-54.2962 151.344,-47.1678 151.344,-47.1678\"/>\n",
         "</g>\n",
         "</g>\n",
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f7620378360> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7faa50350cc0> >"
        ]
       }
      ],
-     "prompt_number": 6
+     "prompt_number": 7
     },
     {
      "cell_type": "code",
diff --git a/tests/python/decompose.ipynb b/tests/python/decompose.ipynb
index 386112577..9f21cc2e2 100644
--- a/tests/python/decompose.ipynb
+++ b/tests/python/decompose.ipynb
@@ -15,10 +15,9 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.4.3+"
+   "version": "3.5.3"
   },
-  "name": "",
-  "signature": "sha256:ddf44352825d3260c20b0a4d29b4972c9cd5be57b3a48bcdf8afe8acaee5eba6"
+  "name": ""
  },
  "nbformat": 3,
  "nbformat_minor": 0,
@@ -113,7 +112,7 @@
         "<polygon fill=\"black\" stroke=\"black\" points=\"37.9419,-145.243 30.9419,-148.393 34.4419,-145.243 30.9419,-145.243 30.9419,-145.243 30.9419,-145.243 34.4419,-145.243 30.9418,-142.093 37.9419,-145.243 37.9419,-145.243\"/>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;1 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
+        "<g id=\"edge7\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M49.6208,-162.28C48.3189,-172.101 50.4453,-181.243 56,-181.243 60.166,-181.243 62.4036,-176.1 62.7128,-169.386\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"62.3792,-162.28 65.8541,-169.124 62.5434,-165.776 62.7076,-169.272 62.7076,-169.272 62.7076,-169.272 62.5434,-165.776 59.561,-169.42 62.3792,-162.28 62.3792,-162.28\"/>\n",
         "<text text-anchor=\"start\" x=\"36\" y=\"-200.043\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
@@ -125,7 +124,7 @@
         "<text text-anchor=\"middle\" x=\"190\" y=\"-33.5426\" font-family=\"Lato\" font-size=\"14.00\">0</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;0 -->\n",
-        "<g id=\"edge3\" class=\"edge\"><title>1&#45;&gt;0</title>\n",
+        "<g id=\"edge6\" class=\"edge\"><title>1&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M70.6291,-134.092C94.2674,-114.751 142.92,-74.9443 169.91,-52.8619\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"175.642,-48.1723 172.219,-55.0429 172.933,-50.3886 170.224,-52.605 170.224,-52.605 170.224,-52.605 172.933,-50.3886 168.229,-50.167 175.642,-48.1723 175.642,-48.1723\"/>\n",
         "<text text-anchor=\"start\" x=\"92\" y=\"-121.043\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
@@ -136,7 +135,7 @@
         "<text text-anchor=\"middle\" x=\"377\" y=\"-54.5426\" font-family=\"Lato\" font-size=\"14.00\">3</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;3 -->\n",
-        "<g id=\"edge6\" class=\"edge\"><title>1&#45;&gt;3</title>\n",
+        "<g id=\"edge9\" class=\"edge\"><title>1&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M61.4186,-127.992C66.5954,-110.192 76.4918,-82.2758 92,-62.2426 116.65,-30.4005 125.855,-20.1451 164,-7.24264 232.475,15.9189 316.751,-23.848 355.157,-45.552\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"361.35,-49.1217 353.712,-48.355 358.318,-47.3738 355.285,-45.6259 355.285,-45.6259 355.285,-45.6259 358.318,-47.3738 356.859,-42.8969 361.35,-49.1217 361.35,-49.1217\"/>\n",
         "<text text-anchor=\"start\" x=\"238.5\" y=\"-10.0426\" font-family=\"Lato\" font-size=\"14.00\">c</text>\n",
@@ -147,7 +146,7 @@
         "<text text-anchor=\"middle\" x=\"190\" y=\"-141.543\" font-family=\"Lato\" font-size=\"14.00\">2</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;2 -->\n",
-        "<g id=\"edge5\" class=\"edge\"><title>1&#45;&gt;2</title>\n",
+        "<g id=\"edge8\" class=\"edge\"><title>1&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M74.2567,-145.243C97.2816,-145.243 138.189,-145.243 164.429,-145.243\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"171.739,-145.243 164.739,-148.393 168.239,-145.243 164.739,-145.243 164.739,-145.243 164.739,-145.243 168.239,-145.243 164.739,-142.093 171.739,-145.243 171.739,-145.243\"/>\n",
         "<text text-anchor=\"start\" x=\"105\" y=\"-149.043\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
@@ -160,7 +159,7 @@
         "<text text-anchor=\"start\" x=\"182\" y=\"-77.0426\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;3 -->\n",
-        "<g id=\"edge11\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
+        "<g id=\"edge3\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M369.969,-74.9067C368.406,-84.8676 370.75,-94.2426 377,-94.2426 381.688,-94.2426 384.178,-88.9692 384.471,-82.1302\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"384.031,-74.9067 387.601,-81.7025 384.244,-78.4002 384.456,-81.8938 384.456,-81.8938 384.456,-81.8938 384.244,-78.4002 381.312,-82.0851 384.031,-74.9067 384.031,-74.9067\"/>\n",
         "<text text-anchor=\"start\" x=\"372.5\" y=\"-113.043\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
@@ -172,38 +171,38 @@
         "<text text-anchor=\"middle\" x=\"294\" y=\"-54.5426\" font-family=\"Lato\" font-size=\"14.00\">4</text>\n",
         "</g>\n",
         "<!-- 4&#45;&gt;3 -->\n",
-        "<g id=\"edge12\" class=\"edge\"><title>4&#45;&gt;3</title>\n",
+        "<g id=\"edge4\" class=\"edge\"><title>4&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M312.178,-58.2426C323.669,-58.2426 338.959,-58.2426 351.693,-58.2426\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"358.847,-58.2426 351.847,-61.3927 355.347,-58.2427 351.847,-58.2427 351.847,-58.2427 351.847,-58.2427 355.347,-58.2427 351.847,-55.0927 358.847,-58.2426 358.847,-58.2426\"/>\n",
         "<text text-anchor=\"start\" x=\"330\" y=\"-62.0426\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "</g>\n",
         "<!-- 4&#45;&gt;4 -->\n",
-        "<g id=\"edge13\" class=\"edge\"><title>4&#45;&gt;4</title>\n",
+        "<g id=\"edge5\" class=\"edge\"><title>4&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M286.969,-74.9067C285.406,-84.8676 287.75,-94.2426 294,-94.2426 298.688,-94.2426 301.178,-88.9692 301.471,-82.1302\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"301.031,-74.9067 304.601,-81.7025 301.244,-78.4002 301.456,-81.8938 301.456,-81.8938 301.456,-81.8938 301.244,-78.4002 298.312,-82.0851 301.031,-74.9067 301.031,-74.9067\"/>\n",
         "<text text-anchor=\"start\" x=\"290.5\" y=\"-98.0426\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;1 -->\n",
-        "<g id=\"edge7\" class=\"edge\"><title>2&#45;&gt;1</title>\n",
+        "<g id=\"edge10\" class=\"edge\"><title>2&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M173.816,-153.903C167.839,-156.847 160.789,-159.764 154,-161.243 127.075,-167.105 118.925,-167.105 92,-161.243 87.5445,-160.273 82.977,-158.682 78.6739,-156.872\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"72.1836,-153.903 79.8596,-153.95 75.3664,-155.359 78.5492,-156.815 78.5492,-156.815 78.5492,-156.815 75.3664,-155.359 77.2387,-159.679 72.1836,-153.903 72.1836,-153.903\"/>\n",
         "<text text-anchor=\"start\" x=\"103\" y=\"-184.043\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "<text text-anchor=\"start\" x=\"115\" y=\"-169.043\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;3 -->\n",
-        "<g id=\"edge9\" class=\"edge\"><title>2&#45;&gt;3</title>\n",
+        "<g id=\"edge12\" class=\"edge\"><title>2&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M208.055,-145.496C233.928,-145.159 283.898,-141.629 320,-121.243 337.84,-111.169 352.915,-93.2717 362.915,-79.1208\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"366.883,-73.3192 365.531,-80.8754 364.907,-76.2082 362.931,-79.0971 362.931,-79.0971 362.931,-79.0971 364.907,-76.2082 360.331,-77.3188 366.883,-73.3192 366.883,-73.3192\"/>\n",
         "<text text-anchor=\"start\" x=\"276\" y=\"-143.043\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;4 -->\n",
-        "<g id=\"edge10\" class=\"edge\"><title>2&#45;&gt;4</title>\n",
+        "<g id=\"edge13\" class=\"edge\"><title>2&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M204.335,-133.869C222.203,-118.628 254.008,-91.5003 274.273,-74.2153\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"279.662,-69.6192 276.38,-76.5585 276.999,-71.8905 274.336,-74.1618 274.336,-74.1618 274.336,-74.1618 276.999,-71.8905 272.292,-71.7652 279.662,-69.6192 279.662,-69.6192\"/>\n",
         "<text text-anchor=\"start\" x=\"226\" y=\"-119.043\" font-family=\"Lato\" font-size=\"14.00\">a &amp; c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;2 -->\n",
-        "<g id=\"edge8\" class=\"edge\"><title>2&#45;&gt;2</title>\n",
+        "<g id=\"edge11\" class=\"edge\"><title>2&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M181.021,-161.159C178.679,-171.393 181.672,-181.243 190,-181.243 196.376,-181.243 199.625,-175.469 199.746,-168.169\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"198.979,-161.159 202.872,-167.774 199.36,-164.638 199.741,-168.117 199.741,-168.117 199.741,-168.117 199.36,-164.638 196.61,-168.46 198.979,-161.159 198.979,-161.159\"/>\n",
         "<text text-anchor=\"start\" x=\"172\" y=\"-185.043\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
@@ -212,7 +211,7 @@
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f7340048a20> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd270264810> >"
        ]
       }
      ],
@@ -279,7 +278,7 @@
         "<polygon fill=\"black\" stroke=\"black\" points=\"37.9419,-142 30.9419,-145.15 34.4419,-142 30.9419,-142 30.9419,-142 30.9419,-142 34.4419,-142 30.9418,-138.85 37.9419,-142 37.9419,-142\"/>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;0 -->\n",
-        "<g id=\"edge3\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
+        "<g id=\"edge4\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M49.6208,-159.037C48.3189,-168.858 50.4453,-178 56,-178 60.166,-178 62.4036,-172.858 62.7128,-166.143\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"62.3792,-159.037 65.8541,-165.882 62.5434,-162.533 62.7076,-166.03 62.7076,-166.03 62.7076,-166.03 62.5434,-162.533 59.561,-166.177 62.3792,-159.037 62.3792,-159.037\"/>\n",
         "<text text-anchor=\"start\" x=\"36\" y=\"-181.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
@@ -290,7 +289,7 @@
         "<text text-anchor=\"middle\" x=\"190\" y=\"-30.3\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;1 -->\n",
-        "<g id=\"edge2\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
+        "<g id=\"edge3\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M70.6291,-130.849C94.2674,-111.508 142.92,-71.7016 169.91,-49.6192\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"175.642,-44.9296 172.219,-51.8003 172.933,-47.146 170.224,-49.3623 170.224,-49.3623 170.224,-49.3623 172.933,-47.146 168.229,-46.9243 175.642,-44.9296 175.642,-44.9296\"/>\n",
         "<text text-anchor=\"start\" x=\"92\" y=\"-117.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
@@ -301,13 +300,13 @@
         "<text text-anchor=\"middle\" x=\"190\" y=\"-139.3\" font-family=\"Lato\" font-size=\"14.00\">2</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;2 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
+        "<g id=\"edge5\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M74.2567,-142.131C97.2816,-142.305 138.189,-142.615 164.429,-142.814\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"171.739,-142.869 164.715,-145.966 168.239,-142.843 164.739,-142.816 164.739,-142.816 164.739,-142.816 168.239,-142.843 164.763,-139.666 171.739,-142.869 171.739,-142.869\"/>\n",
         "<text text-anchor=\"start\" x=\"105\" y=\"-145.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;1 -->\n",
-        "<g id=\"edge5\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
+        "<g id=\"edge2\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M179.087,-48.4167C175.276,-59.166 178.914,-70 190,-70 198.661,-70 202.776,-63.3875 202.344,-55.3688\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"200.913,-48.4167 205.41,-54.6375 201.619,-51.8447 202.325,-55.2728 202.325,-55.2728 202.325,-55.2728 201.619,-51.8447 199.239,-55.9082 200.913,-48.4167 200.913,-48.4167\"/>\n",
         "<text text-anchor=\"start\" x=\"185.5\" y=\"-88.8\" font-family=\"Lato\" font-size=\"14.00\">b</text>\n",
@@ -329,7 +328,7 @@
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f7340048990> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd270264840> >"
        ]
       }
      ],
@@ -391,7 +390,7 @@
         "<polygon fill=\"black\" stroke=\"black\" points=\"37.9419,-35.2072 30.9419,-38.3573 34.4419,-35.2073 30.9419,-35.2073 30.9419,-35.2073 30.9419,-35.2073 34.4419,-35.2073 30.9418,-32.0573 37.9419,-35.2072 37.9419,-35.2072\"/>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;0 -->\n",
-        "<g id=\"edge2\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
+        "<g id=\"edge5\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M49.6208,-52.2445C48.3189,-62.0651 50.4453,-71.2072 56,-71.2072 60.166,-71.2072 62.4036,-66.0648 62.7128,-59.3505\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"62.3792,-52.2445 65.8541,-59.0891 62.5434,-55.7407 62.7076,-59.2368 62.7076,-59.2368 62.7076,-59.2368 62.5434,-55.7407 59.561,-59.3846 62.3792,-52.2445 62.3792,-52.2445\"/>\n",
         "<text text-anchor=\"start\" x=\"36\" y=\"-75.0072\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
@@ -402,7 +401,7 @@
         "<text text-anchor=\"middle\" x=\"355\" y=\"-33.5072\" font-family=\"Lato\" font-size=\"14.00\">2</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;2 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
+        "<g id=\"edge7\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M73.0478,-29.4272C112.119,-16.1948 215.065,13.6081 298,-7.20721 310.58,-10.3645 323.419,-16.9513 333.624,-23.1507\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"339.612,-26.9265 332.011,-25.8575 336.652,-25.0597 333.691,-23.1929 333.691,-23.1929 333.691,-23.1929 336.652,-25.0597 335.371,-20.5284 339.612,-26.9265 339.612,-26.9265\"/>\n",
         "<text text-anchor=\"start\" x=\"216.5\" y=\"-6.00721\" font-family=\"Lato\" font-size=\"14.00\">c</text>\n",
@@ -413,13 +412,13 @@
         "<text text-anchor=\"middle\" x=\"168\" y=\"-33.5072\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;1 -->\n",
-        "<g id=\"edge3\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
+        "<g id=\"edge6\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M74.2788,-35.363C89.4809,-35.5178 112.211,-35.7926 132,-36.2072 135.464,-36.2798 139.121,-36.3696 142.713,-36.4654\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"149.911,-36.6669 142.826,-39.6197 146.413,-36.5689 142.914,-36.471 142.914,-36.471 142.914,-36.471 146.413,-36.5689 143.002,-33.3222 149.911,-36.6669 149.911,-36.6669\"/>\n",
         "<text text-anchor=\"start\" x=\"94\" y=\"-40.0072\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;2 -->\n",
-        "<g id=\"edge9\" class=\"edge\"><title>2&#45;&gt;2</title>\n",
+        "<g id=\"edge2\" class=\"edge\"><title>2&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M347.969,-53.8713C346.406,-63.8322 348.75,-73.2072 355,-73.2072 359.688,-73.2072 362.178,-67.9338 362.471,-61.0948\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"362.031,-53.8713 365.601,-60.667 362.244,-57.3648 362.456,-60.8584 362.456,-60.8584 362.456,-60.8584 362.244,-57.3648 359.312,-61.0497 362.031,-53.8713 362.031,-53.8713\"/>\n",
         "<text text-anchor=\"start\" x=\"350.5\" y=\"-92.0072\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
@@ -431,37 +430,37 @@
         "<text text-anchor=\"middle\" x=\"272\" y=\"-33.5072\" font-family=\"Lato\" font-size=\"14.00\">3</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;2 -->\n",
-        "<g id=\"edge10\" class=\"edge\"><title>3&#45;&gt;2</title>\n",
+        "<g id=\"edge3\" class=\"edge\"><title>3&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M290.178,-37.2072C301.669,-37.2072 316.959,-37.2072 329.693,-37.2072\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"336.847,-37.2072 329.847,-40.3573 333.347,-37.2073 329.847,-37.2073 329.847,-37.2073 329.847,-37.2073 333.347,-37.2073 329.847,-34.0573 336.847,-37.2072 336.847,-37.2072\"/>\n",
         "<text text-anchor=\"start\" x=\"308\" y=\"-41.0072\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;3 -->\n",
-        "<g id=\"edge11\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
+        "<g id=\"edge4\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M264.969,-53.8713C263.406,-63.8322 265.75,-73.2072 272,-73.2072 276.688,-73.2072 279.178,-67.9338 279.471,-61.0948\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"279.031,-53.8713 282.601,-60.667 279.244,-57.3648 279.456,-60.8584 279.456,-60.8584 279.456,-60.8584 279.244,-57.3648 276.312,-61.0497 279.031,-53.8713 279.031,-53.8713\"/>\n",
         "<text text-anchor=\"start\" x=\"268.5\" y=\"-77.0072\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;0 -->\n",
-        "<g id=\"edge5\" class=\"edge\"><title>1&#45;&gt;0</title>\n",
+        "<g id=\"edge8\" class=\"edge\"><title>1&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M151.358,-44.9402C145.443,-47.4659 138.555,-49.9449 132,-51.2072 114.543,-54.5691 109.371,-54.9894 92,-51.2072 87.5445,-50.2371 82.977,-48.647 78.6739,-46.8365\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"72.1836,-43.8674 79.8596,-43.915 75.3664,-45.3234 78.5492,-46.7795 78.5492,-46.7795 78.5492,-46.7795 75.3664,-45.3234 77.2387,-49.644 72.1836,-43.8674 72.1836,-43.8674\"/>\n",
         "<text text-anchor=\"start\" x=\"92\" y=\"-58.0072\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;2 -->\n",
-        "<g id=\"edge7\" class=\"edge\"><title>1&#45;&gt;2</title>\n",
+        "<g id=\"edge10\" class=\"edge\"><title>1&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M180.109,-50.6899C193.757,-66.0814 218.509,-90.3938 246,-100.207 267.766,-107.977 276.917,-109.675 298,-100.207 316.806,-91.762 331.873,-73.5336 341.62,-58.8467\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"345.468,-52.808 344.363,-60.4043 343.587,-55.7599 341.706,-58.7117 341.706,-58.7117 341.706,-58.7117 343.587,-55.7599 339.05,-57.0191 345.468,-52.808 345.468,-52.808\"/>\n",
         "<text text-anchor=\"start\" x=\"254\" y=\"-110.007\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;3 -->\n",
-        "<g id=\"edge8\" class=\"edge\"><title>1&#45;&gt;3</title>\n",
+        "<g id=\"edge11\" class=\"edge\"><title>1&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M186.303,-37.2072C202.962,-37.2072 228.303,-37.2072 246.927,-37.2072\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"253.953,-37.2072 246.953,-40.3573 250.453,-37.2073 246.953,-37.2073 246.953,-37.2073 246.953,-37.2073 250.453,-37.2073 246.953,-34.0573 253.953,-37.2072 253.953,-37.2072\"/>\n",
         "<text text-anchor=\"start\" x=\"204\" y=\"-41.0072\" font-family=\"Lato\" font-size=\"14.00\">a &amp; c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;1 -->\n",
-        "<g id=\"edge6\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
+        "<g id=\"edge9\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M159.021,-53.1232C156.679,-63.3576 159.672,-73.2072 168,-73.2072 174.376,-73.2072 177.625,-67.4336 177.746,-60.134\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"176.979,-53.1232 180.872,-59.7387 177.36,-56.6024 177.741,-60.0816 177.741,-60.0816 177.741,-60.0816 177.36,-56.6024 174.61,-60.4246 176.979,-53.1232 176.979,-53.1232\"/>\n",
         "<text text-anchor=\"start\" x=\"150\" y=\"-77.0072\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
@@ -470,7 +469,7 @@
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f73400489c0> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd270264cc0> >"
        ]
       }
      ],
@@ -560,7 +559,7 @@
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f7340048bd0> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd270264450> >"
        ]
       }
      ],
@@ -637,7 +636,7 @@
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f734006f3c0> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd270264cf0> >"
        ]
       }
      ],
@@ -701,7 +700,7 @@
         "<polygon fill=\"black\" stroke=\"black\" points=\"37.9419,-142 30.9419,-145.15 34.4419,-142 30.9419,-142 30.9419,-142 30.9419,-142 34.4419,-142 30.9418,-138.85 37.9419,-142 37.9419,-142\"/>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;0 -->\n",
-        "<g id=\"edge3\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
+        "<g id=\"edge4\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M49.6208,-159.037C48.3189,-168.858 50.4453,-178 56,-178 60.166,-178 62.4036,-172.858 62.7128,-166.143\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"62.3792,-159.037 65.8541,-165.882 62.5434,-162.533 62.7076,-166.03 62.7076,-166.03 62.7076,-166.03 62.5434,-162.533 59.561,-166.177 62.3792,-159.037 62.3792,-159.037\"/>\n",
         "<text text-anchor=\"start\" x=\"36\" y=\"-196.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
@@ -713,7 +712,7 @@
         "<text text-anchor=\"middle\" x=\"190\" y=\"-30.3\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;1 -->\n",
-        "<g id=\"edge2\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
+        "<g id=\"edge3\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M70.6291,-130.849C94.2674,-111.508 142.92,-71.7016 169.91,-49.6192\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"175.642,-44.9296 172.219,-51.8003 172.933,-47.146 170.224,-49.3623 170.224,-49.3623 170.224,-49.3623 172.933,-47.146 168.229,-46.9243 175.642,-44.9296 175.642,-44.9296\"/>\n",
         "<text text-anchor=\"start\" x=\"92\" y=\"-117.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
@@ -724,13 +723,13 @@
         "<text text-anchor=\"middle\" x=\"190\" y=\"-146.3\" font-family=\"Lato\" font-size=\"14.00\">2</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;2 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
+        "<g id=\"edge5\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M74.2268,-141.209C93.6634,-140.542 126.194,-140.102 154,-143 157.681,-143.384 161.549,-143.969 165.316,-144.642\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"172.363,-146.011 164.89,-147.768 168.927,-145.344 165.491,-144.676 165.491,-144.676 165.491,-144.676 168.927,-145.344 166.092,-141.583 172.363,-146.011 172.363,-146.011\"/>\n",
         "<text text-anchor=\"start\" x=\"105\" y=\"-146.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;1 -->\n",
-        "<g id=\"edge5\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
+        "<g id=\"edge2\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M179.087,-48.4167C175.276,-59.166 178.914,-70 190,-70 198.661,-70 202.776,-63.3875 202.344,-55.3688\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"200.913,-48.4167 205.41,-54.6375 201.619,-51.8447 202.325,-55.2728 202.325,-55.2728 202.325,-55.2728 201.619,-51.8447 199.239,-55.9082 200.913,-48.4167 200.913,-48.4167\"/>\n",
         "<text text-anchor=\"start\" x=\"185.5\" y=\"-88.8\" font-family=\"Lato\" font-size=\"14.00\">b</text>\n",
@@ -753,7 +752,7 @@
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f734006f060> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd270264270> >"
        ]
       },
       {
@@ -796,7 +795,7 @@
         "<polygon fill=\"black\" stroke=\"black\" points=\"37.9419,-34 30.9419,-37.1501 34.4419,-34 30.9419,-34.0001 30.9419,-34.0001 30.9419,-34.0001 34.4419,-34 30.9418,-30.8501 37.9419,-34 37.9419,-34\"/>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;0 -->\n",
-        "<g id=\"edge2\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
+        "<g id=\"edge5\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M49.6208,-51.0373C48.3189,-60.8579 50.4453,-70 56,-70 60.166,-70 62.4036,-64.8576 62.7128,-58.1433\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"62.3792,-51.0373 65.8541,-57.8818 62.5434,-54.5335 62.7076,-58.0296 62.7076,-58.0296 62.7076,-58.0296 62.5434,-54.5335 59.561,-58.1774 62.3792,-51.0373 62.3792,-51.0373\"/>\n",
         "<text text-anchor=\"start\" x=\"36\" y=\"-88.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
@@ -808,7 +807,7 @@
         "<text text-anchor=\"middle\" x=\"355\" y=\"-43.3\" font-family=\"Lato\" font-size=\"14.00\">2</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;2 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
+        "<g id=\"edge7\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M73.6763,-29.2967C113.28,-18.8831 215.821,3.62551 298,-17 310.58,-20.1573 323.419,-26.7441 333.624,-32.9435\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"339.612,-36.7193 332.011,-35.6503 336.652,-34.8525 333.691,-32.9857 333.691,-32.9857 333.691,-32.9857 336.652,-34.8525 335.371,-30.3212 339.612,-36.7193 339.612,-36.7193\"/>\n",
         "<text text-anchor=\"start\" x=\"216.5\" y=\"-12.8\" font-family=\"Lato\" font-size=\"14.00\">c</text>\n",
@@ -819,13 +818,13 @@
         "<text text-anchor=\"middle\" x=\"168\" y=\"-46.3\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;1 -->\n",
-        "<g id=\"edge3\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
+        "<g id=\"edge6\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M74.1884,-32.3468C89.5275,-31.3146 112.51,-30.864 132,-35 136.414,-35.9366 140.962,-37.44 145.259,-39.1413\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"151.749,-41.9248 144.074,-42.0607 148.532,-40.5453 145.316,-39.1657 145.316,-39.1657 145.316,-39.1657 148.532,-40.5453 146.557,-36.2707 151.749,-41.9248 151.749,-41.9248\"/>\n",
         "<text text-anchor=\"start\" x=\"94\" y=\"-38.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;2 -->\n",
-        "<g id=\"edge9\" class=\"edge\"><title>2&#45;&gt;2</title>\n",
+        "<g id=\"edge2\" class=\"edge\"><title>2&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M347.969,-63.6641C346.406,-73.625 348.75,-83 355,-83 359.688,-83 362.178,-77.7266 362.471,-70.8876\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"362.031,-63.6641 365.601,-70.4598 362.244,-67.1576 362.456,-70.6511 362.456,-70.6511 362.456,-70.6511 362.244,-67.1576 359.312,-70.8425 362.031,-63.6641 362.031,-63.6641\"/>\n",
         "<text text-anchor=\"start\" x=\"350.5\" y=\"-101.8\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
@@ -837,38 +836,38 @@
         "<text text-anchor=\"middle\" x=\"272\" y=\"-43.3\" font-family=\"Lato\" font-size=\"14.00\">3</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;2 -->\n",
-        "<g id=\"edge10\" class=\"edge\"><title>3&#45;&gt;2</title>\n",
+        "<g id=\"edge3\" class=\"edge\"><title>3&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M290.178,-47C301.669,-47 316.959,-47 329.693,-47\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"336.847,-47 329.847,-50.1501 333.347,-47 329.847,-47.0001 329.847,-47.0001 329.847,-47.0001 333.347,-47 329.847,-43.8501 336.847,-47 336.847,-47\"/>\n",
         "<text text-anchor=\"start\" x=\"308\" y=\"-50.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;3 -->\n",
-        "<g id=\"edge11\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
+        "<g id=\"edge4\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M264.969,-63.6641C263.406,-73.625 265.75,-83 272,-83 276.688,-83 279.178,-77.7266 279.471,-70.8876\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"279.031,-63.6641 282.601,-70.4598 279.244,-67.1576 279.456,-70.6511 279.456,-70.6511 279.456,-70.6511 279.244,-67.1576 276.312,-70.8425 279.031,-63.6641 279.031,-63.6641\"/>\n",
         "<text text-anchor=\"start\" x=\"268.5\" y=\"-86.8\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;0 -->\n",
-        "<g id=\"edge5\" class=\"edge\"><title>1&#45;&gt;0</title>\n",
+        "<g id=\"edge8\" class=\"edge\"><title>1&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M150.1,-52.0318C134.754,-53.3995 111.593,-54.2661 92,-50 87.5445,-49.0299 82.977,-47.4398 78.6739,-45.6293\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"72.1836,-42.6602 79.8596,-42.7078 75.3664,-44.1162 78.5492,-45.5723 78.5492,-45.5723 78.5492,-45.5723 75.3664,-44.1162 77.2387,-48.4368 72.1836,-42.6602 72.1836,-42.6602\"/>\n",
         "<text text-anchor=\"start\" x=\"92\" y=\"-72.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "<text text-anchor=\"start\" x=\"104\" y=\"-57.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;2 -->\n",
-        "<g id=\"edge7\" class=\"edge\"><title>1&#45;&gt;2</title>\n",
+        "<g id=\"edge10\" class=\"edge\"><title>1&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M180.495,-63.1155C194.327,-77.7993 219.074,-100.748 246,-110 267.857,-117.51 276.917,-119.468 298,-110 316.806,-101.555 331.873,-83.3264 341.62,-68.6395\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"345.468,-62.6008 344.363,-70.1971 343.587,-65.5526 341.706,-68.5045 341.706,-68.5045 341.706,-68.5045 343.587,-65.5526 339.05,-66.8119 345.468,-62.6008 345.468,-62.6008\"/>\n",
         "<text text-anchor=\"start\" x=\"254\" y=\"-119.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;3 -->\n",
-        "<g id=\"edge8\" class=\"edge\"><title>1&#45;&gt;3</title>\n",
+        "<g id=\"edge11\" class=\"edge\"><title>1&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M186.303,-49.4911C202.962,-49.0011 228.303,-48.2558 246.927,-47.708\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"253.953,-47.5014 247.048,-50.8559 250.454,-47.6043 246.956,-47.7073 246.956,-47.7073 246.956,-47.7073 250.454,-47.6043 246.863,-44.5586 253.953,-47.5014 253.953,-47.5014\"/>\n",
         "<text text-anchor=\"start\" x=\"204\" y=\"-52.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;1 -->\n",
-        "<g id=\"edge6\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
+        "<g id=\"edge9\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M159.021,-65.916C156.679,-76.1504 159.672,-86 168,-86 174.376,-86 177.625,-80.2263 177.746,-72.9268\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"176.979,-65.916 180.872,-72.5315 177.36,-69.3952 177.741,-72.8744 177.741,-72.8744 177.741,-72.8744 177.36,-69.3952 174.61,-73.2174 176.979,-65.916 176.979,-65.916\"/>\n",
         "<text text-anchor=\"start\" x=\"150\" y=\"-89.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
@@ -877,7 +876,7 @@
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f734006f3f0> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd270264180> >"
        ]
       },
       {
@@ -923,7 +922,7 @@
         "<polygon fill=\"black\" stroke=\"black\" points=\"37.9419,-145.243 30.9419,-148.393 34.4419,-145.243 30.9419,-145.243 30.9419,-145.243 30.9419,-145.243 34.4419,-145.243 30.9418,-142.093 37.9419,-145.243 37.9419,-145.243\"/>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;0 -->\n",
-        "<g id=\"edge3\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
+        "<g id=\"edge7\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M49.6208,-162.28C48.3189,-172.101 50.4453,-181.243 56,-181.243 60.166,-181.243 62.4036,-176.1 62.7128,-169.386\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"62.3792,-162.28 65.8541,-169.124 62.5434,-165.776 62.7076,-169.272 62.7076,-169.272 62.7076,-169.272 62.5434,-165.776 59.561,-169.42 62.3792,-162.28 62.3792,-162.28\"/>\n",
         "<text text-anchor=\"start\" x=\"36\" y=\"-185.043\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
@@ -934,7 +933,7 @@
         "<text text-anchor=\"middle\" x=\"190\" y=\"-33.5426\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;1 -->\n",
-        "<g id=\"edge2\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
+        "<g id=\"edge6\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M70.6291,-134.092C94.2674,-114.751 142.92,-74.9443 169.91,-52.8619\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"175.642,-48.1723 172.219,-55.0429 172.933,-50.3886 170.224,-52.605 170.224,-52.605 170.224,-52.605 172.933,-50.3886 168.229,-50.167 175.642,-48.1723 175.642,-48.1723\"/>\n",
         "<text text-anchor=\"start\" x=\"92\" y=\"-121.043\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
@@ -945,7 +944,7 @@
         "<text text-anchor=\"middle\" x=\"377\" y=\"-54.5426\" font-family=\"Lato\" font-size=\"14.00\">3</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;3 -->\n",
-        "<g id=\"edge5\" class=\"edge\"><title>0&#45;&gt;3</title>\n",
+        "<g id=\"edge9\" class=\"edge\"><title>0&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M61.4186,-127.992C66.5954,-110.192 76.4918,-82.2758 92,-62.2426 116.65,-30.4005 125.855,-20.1451 164,-7.24264 232.475,15.9189 316.751,-23.848 355.157,-45.552\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"361.35,-49.1217 353.712,-48.355 358.318,-47.3738 355.285,-45.6259 355.285,-45.6259 355.285,-45.6259 358.318,-47.3738 356.859,-42.8969 361.35,-49.1217 361.35,-49.1217\"/>\n",
         "<text text-anchor=\"start\" x=\"238.5\" y=\"-10.0426\" font-family=\"Lato\" font-size=\"14.00\">c</text>\n",
@@ -956,20 +955,20 @@
         "<text text-anchor=\"middle\" x=\"190\" y=\"-141.543\" font-family=\"Lato\" font-size=\"14.00\">2</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;2 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
+        "<g id=\"edge8\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M74.2567,-145.243C97.2816,-145.243 138.189,-145.243 164.429,-145.243\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"171.739,-145.243 164.739,-148.393 168.239,-145.243 164.739,-145.243 164.739,-145.243 164.739,-145.243 168.239,-145.243 164.739,-142.093 171.739,-145.243 171.739,-145.243\"/>\n",
         "<text text-anchor=\"start\" x=\"105\" y=\"-149.043\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;1 -->\n",
-        "<g id=\"edge6\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
+        "<g id=\"edge2\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M181.021,-53.1587C178.679,-63.393 181.672,-73.2426 190,-73.2426 196.376,-73.2426 199.625,-67.469 199.746,-60.1694\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"198.979,-53.1587 202.872,-59.7742 199.36,-56.6379 199.741,-60.1171 199.741,-60.1171 199.741,-60.1171 199.36,-56.6379 196.61,-60.46 198.979,-53.1587 198.979,-53.1587\"/>\n",
         "<text text-anchor=\"start\" x=\"185.5\" y=\"-92.0426\" font-family=\"Lato\" font-size=\"14.00\">b</text>\n",
         "<text text-anchor=\"start\" x=\"182\" y=\"-77.0426\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;3 -->\n",
-        "<g id=\"edge11\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
+        "<g id=\"edge3\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M369.969,-74.9067C368.406,-84.8676 370.75,-94.2426 377,-94.2426 381.688,-94.2426 384.178,-88.9692 384.471,-82.1302\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"384.031,-74.9067 387.601,-81.7025 384.244,-78.4002 384.456,-81.8938 384.456,-81.8938 384.456,-81.8938 384.244,-78.4002 381.312,-82.0851 384.031,-74.9067 384.031,-74.9067\"/>\n",
         "<text text-anchor=\"start\" x=\"372.5\" y=\"-113.043\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
@@ -981,37 +980,37 @@
         "<text text-anchor=\"middle\" x=\"294\" y=\"-54.5426\" font-family=\"Lato\" font-size=\"14.00\">4</text>\n",
         "</g>\n",
         "<!-- 4&#45;&gt;3 -->\n",
-        "<g id=\"edge12\" class=\"edge\"><title>4&#45;&gt;3</title>\n",
+        "<g id=\"edge4\" class=\"edge\"><title>4&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M312.178,-58.2426C323.669,-58.2426 338.959,-58.2426 351.693,-58.2426\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"358.847,-58.2426 351.847,-61.3927 355.347,-58.2427 351.847,-58.2427 351.847,-58.2427 351.847,-58.2427 355.347,-58.2427 351.847,-55.0927 358.847,-58.2426 358.847,-58.2426\"/>\n",
         "<text text-anchor=\"start\" x=\"330\" y=\"-62.0426\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "</g>\n",
         "<!-- 4&#45;&gt;4 -->\n",
-        "<g id=\"edge13\" class=\"edge\"><title>4&#45;&gt;4</title>\n",
+        "<g id=\"edge5\" class=\"edge\"><title>4&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M286.969,-74.9067C285.406,-84.8676 287.75,-94.2426 294,-94.2426 298.688,-94.2426 301.178,-88.9692 301.471,-82.1302\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"301.031,-74.9067 304.601,-81.7025 301.244,-78.4002 301.456,-81.8938 301.456,-81.8938 301.456,-81.8938 301.244,-78.4002 298.312,-82.0851 301.031,-74.9067 301.031,-74.9067\"/>\n",
         "<text text-anchor=\"start\" x=\"290.5\" y=\"-98.0426\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;0 -->\n",
-        "<g id=\"edge7\" class=\"edge\"><title>2&#45;&gt;0</title>\n",
+        "<g id=\"edge10\" class=\"edge\"><title>2&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M173.816,-153.903C167.839,-156.847 160.789,-159.764 154,-161.243 127.075,-167.105 118.925,-167.105 92,-161.243 87.5445,-160.273 82.977,-158.682 78.6739,-156.872\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"72.1836,-153.903 79.8596,-153.95 75.3664,-155.359 78.5492,-156.815 78.5492,-156.815 78.5492,-156.815 75.3664,-155.359 77.2387,-159.679 72.1836,-153.903 72.1836,-153.903\"/>\n",
         "<text text-anchor=\"start\" x=\"103\" y=\"-169.043\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;3 -->\n",
-        "<g id=\"edge9\" class=\"edge\"><title>2&#45;&gt;3</title>\n",
+        "<g id=\"edge12\" class=\"edge\"><title>2&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M208.055,-145.496C233.928,-145.159 283.898,-141.629 320,-121.243 337.84,-111.169 352.915,-93.2717 362.915,-79.1208\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"366.883,-73.3192 365.531,-80.8754 364.907,-76.2082 362.931,-79.0971 362.931,-79.0971 362.931,-79.0971 364.907,-76.2082 360.331,-77.3188 366.883,-73.3192 366.883,-73.3192\"/>\n",
         "<text text-anchor=\"start\" x=\"276\" y=\"-143.043\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;4 -->\n",
-        "<g id=\"edge10\" class=\"edge\"><title>2&#45;&gt;4</title>\n",
+        "<g id=\"edge13\" class=\"edge\"><title>2&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M204.335,-133.869C222.203,-118.628 254.008,-91.5003 274.273,-74.2153\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"279.662,-69.6192 276.38,-76.5585 276.999,-71.8905 274.336,-74.1618 274.336,-74.1618 274.336,-74.1618 276.999,-71.8905 272.292,-71.7652 279.662,-69.6192 279.662,-69.6192\"/>\n",
         "<text text-anchor=\"start\" x=\"226\" y=\"-119.043\" font-family=\"Lato\" font-size=\"14.00\">a &amp; c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;2 -->\n",
-        "<g id=\"edge8\" class=\"edge\"><title>2&#45;&gt;2</title>\n",
+        "<g id=\"edge11\" class=\"edge\"><title>2&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M181.021,-161.159C178.679,-171.393 181.672,-181.243 190,-181.243 196.376,-181.243 199.625,-175.469 199.746,-168.169\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"198.979,-161.159 202.872,-167.774 199.36,-164.638 199.741,-168.117 199.741,-168.117 199.741,-168.117 199.36,-164.638 196.61,-168.46 198.979,-161.159 198.979,-161.159\"/>\n",
         "<text text-anchor=\"start\" x=\"172\" y=\"-185.043\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
@@ -1020,7 +1019,7 @@
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f734006f060> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd2702642d0> >"
        ]
       }
      ],
@@ -1173,7 +1172,7 @@
         "<text text-anchor=\"start\" x=\"971.666\" y=\"-314.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;6 -->\n",
-        "<g id=\"edge11\" class=\"edge\"><title>2&#45;&gt;6</title>\n",
+        "<g id=\"edge35\" class=\"edge\"><title>2&#45;&gt;6</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M70.6773,-366.38C83.6475,-428.346 125.451,-578 226.681,-578 226.681,-578 226.681,-578 864.855,-578 955.533,-578 969.853,-437.963 971.242,-366.258\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"971.341,-359.121 974.393,-366.164 971.292,-362.62 971.243,-366.12 971.243,-366.12 971.243,-366.12 971.292,-362.62 968.094,-366.076 971.341,-359.121 971.341,-359.121\"/>\n",
         "<text text-anchor=\"start\" x=\"549.804\" y=\"-581.8\" font-family=\"Lato\" font-size=\"14.00\">c</text>\n",
@@ -1186,7 +1185,7 @@
         "<text text-anchor=\"start\" x=\"553.304\" y=\"-299.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;5 -->\n",
-        "<g id=\"edge10\" class=\"edge\"><title>2&#45;&gt;5</title>\n",
+        "<g id=\"edge34\" class=\"edge\"><title>2&#45;&gt;5</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M89.1564,-328.414C127.645,-309.98 207.462,-274.755 279.622,-262 363.655,-247.147 462.273,-275.978 514.835,-295.048\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"521.631,-297.553 513.973,-298.088 518.347,-296.342 515.063,-295.132 515.063,-295.132 515.063,-295.132 518.347,-296.342 516.152,-292.176 521.631,-297.553 521.631,-297.553\"/>\n",
         "<text text-anchor=\"start\" x=\"292.622\" y=\"-265.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
@@ -1199,7 +1198,7 @@
         "<text text-anchor=\"start\" x=\"227.681\" y=\"-407.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;3 -->\n",
-        "<g id=\"edge8\" class=\"edge\"><title>2&#45;&gt;3</title>\n",
+        "<g id=\"edge32\" class=\"edge\"><title>2&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M89.2534,-351.342C115.766,-364.201 159.319,-385.327 190.285,-400.347\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"196.692,-403.454 189.019,-403.233 193.543,-401.926 190.393,-400.399 190.393,-400.399 190.393,-400.399 193.543,-401.926 191.768,-397.565 196.692,-403.454 196.692,-403.454\"/>\n",
         "<text text-anchor=\"start\" x=\"109.74\" y=\"-396.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
@@ -1212,16 +1211,16 @@
         "<text text-anchor=\"start\" x=\"227.681\" y=\"-162.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;4 -->\n",
-        "<g id=\"edge9\" class=\"edge\"><title>2&#45;&gt;4</title>\n",
+        "<g id=\"edge33\" class=\"edge\"><title>2&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M71.2529,-313.422C77.1981,-289.867 88.8254,-255.772 109.74,-233 130.994,-209.859 163.216,-194.254 188.458,-184.772\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"195.045,-182.376 189.544,-187.729 191.756,-183.572 188.467,-184.769 188.467,-184.769 188.467,-184.769 191.756,-183.572 187.39,-181.809 195.045,-182.376 195.045,-182.376\"/>\n",
         "<text text-anchor=\"start\" x=\"111.74\" y=\"-236.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 6&#45;&gt;6 -->\n",
-        "<g id=\"edge26\" class=\"edge\"><title>6&#45;&gt;6</title>\n",
+        "<g id=\"edge2\" class=\"edge\"><title>6&#45;&gt;6</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M961.166,-357.463C961.166,-368.284 964.666,-376.941 971.666,-376.941 977.025,-376.941 980.333,-371.867 981.589,-364.632\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"982.166,-357.463 984.744,-364.693 981.885,-360.952 981.605,-364.441 981.605,-364.441 981.605,-364.441 981.885,-360.952 978.465,-364.188 982.166,-357.463 982.166,-357.463\"/>\n",
-        "<text text-anchor=\"middle\" x=\"971.666\" y=\"-380.741\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
+        "<text text-anchor=\"start\" x=\"967.166\" y=\"-380.741\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- 1 -->\n",
         "<g id=\"node4\" class=\"node\"><title>1</title>\n",
@@ -1230,13 +1229,13 @@
         "<text text-anchor=\"start\" x=\"855.855\" y=\"-244.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;6 -->\n",
-        "<g id=\"edge7\" class=\"edge\"><title>1&#45;&gt;6</title>\n",
+        "<g id=\"edge4\" class=\"edge\"><title>1&#45;&gt;6</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M886.779,-270.297C901.227,-279.719 920.436,-292.245 936.826,-302.933\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"942.723,-306.778 935.139,-305.593 939.791,-304.866 936.859,-302.954 936.859,-302.954 936.859,-302.954 939.791,-304.866 938.58,-300.316 942.723,-306.778 942.723,-306.778\"/>\n",
         "<text text-anchor=\"start\" x=\"908.725\" y=\"-294.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;1 -->\n",
-        "<g id=\"edge6\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
+        "<g id=\"edge3\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M854.562,-281.37C853.921,-291.924 857.019,-300.87 863.855,-300.87 869.089,-300.87 872.131,-295.626 872.982,-288.431\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"873.148,-281.37 876.133,-288.442 873.065,-284.869 872.983,-288.368 872.983,-288.368 872.983,-288.368 873.065,-284.869 869.834,-288.294 873.148,-281.37 873.148,-281.37\"/>\n",
         "<text text-anchor=\"start\" x=\"860.355\" y=\"-304.67\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
@@ -1248,19 +1247,19 @@
         "<text text-anchor=\"start\" x=\"855.855\" y=\"-31.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#b276b2\">\u2778</text>\n",
         "</g>\n",
         "<!-- 8&#45;&gt;6 -->\n",
-        "<g id=\"edge34\" class=\"edge\"><title>8&#45;&gt;6</title>\n",
+        "<g id=\"edge6\" class=\"edge\"><title>8&#45;&gt;6</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M885.194,-59.8794C896.985,-70.7349 911.152,-85.8048 919.725,-102 950.677,-160.469 962.917,-237.273 967.692,-283.79\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"968.395,-290.989 964.579,-284.329 968.055,-287.505 967.714,-284.022 967.714,-284.022 967.714,-284.022 968.055,-287.505 970.849,-283.715 968.395,-290.989 968.395,-290.989\"/>\n",
         "<text text-anchor=\"start\" x=\"908.725\" y=\"-105.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "</g>\n",
         "<!-- 8&#45;&gt;1 -->\n",
-        "<g id=\"edge33\" class=\"edge\"><title>8&#45;&gt;1</title>\n",
+        "<g id=\"edge5\" class=\"edge\"><title>8&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M847.171,-64.7811C827.002,-92.619 794.184,-143.137 781.485,-192.5 779.824,-198.956 778.176,-201.712 781.485,-207.5 792.194,-226.234 813.276,-238.449 831.429,-245.935\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"837.96,-248.482 830.294,-248.874 834.7,-247.211 831.439,-245.939 831.439,-245.939 831.439,-245.939 834.7,-247.211 832.584,-243.004 837.96,-248.482 837.96,-248.482\"/>\n",
         "<text text-anchor=\"start\" x=\"769.485\" y=\"-196.3\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b</text>\n",
         "</g>\n",
         "<!-- 8&#45;&gt;8 -->\n",
-        "<g id=\"edge35\" class=\"edge\"><title>8&#45;&gt;8</title>\n",
+        "<g id=\"edge7\" class=\"edge\"><title>8&#45;&gt;8</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M854.562,-68.37C853.921,-78.9238 857.019,-87.8701 863.855,-87.8701 869.089,-87.8701 872.131,-82.6259 872.982,-75.4312\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"873.148,-68.37 876.133,-75.4419 873.065,-71.869 872.983,-75.3681 872.983,-75.3681 872.983,-75.3681 873.065,-71.869 869.834,-75.2943 873.148,-68.37 873.148,-68.37\"/>\n",
         "<text text-anchor=\"start\" x=\"846.855\" y=\"-91.6701\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b</text>\n",
@@ -1272,43 +1271,43 @@
         "<text text-anchor=\"start\" x=\"382.492\" y=\"-305.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;6 -->\n",
-        "<g id=\"edge5\" class=\"edge\"><title>0&#45;&gt;6</title>\n",
+        "<g id=\"edge11\" class=\"edge\"><title>0&#45;&gt;6</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M405.588,-339.236C430.449,-375.408 485.801,-443 552.304,-443 552.304,-443 552.304,-443 864.855,-443 908.58,-443 938.792,-397.534 955.419,-363.046\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"958.563,-356.312 958.456,-363.987 957.082,-359.483 955.602,-362.655 955.602,-362.655 955.602,-362.655 957.082,-359.483 952.747,-361.322 958.563,-356.312 958.563,-356.312\"/>\n",
         "<text text-anchor=\"start\" x=\"694.115\" y=\"-446.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; c</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;1 -->\n",
-        "<g id=\"edge3\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
+        "<g id=\"edge9\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M414.107,-330.764C420.892,-334.795 428.385,-339.151 435.362,-343 472.087,-363.257 478.59,-376.171 519.362,-386 548.692,-393.071 557.636,-391.793 587.245,-386 684.636,-366.944 787.277,-306.018 835.186,-274.812\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"841.303,-270.795 837.181,-277.27 838.377,-272.716 835.452,-274.637 835.452,-274.637 835.452,-274.637 838.377,-272.716 833.722,-272.004 841.303,-270.795 841.303,-270.795\"/>\n",
         "<text text-anchor=\"start\" x=\"620.245\" y=\"-385.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; c</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;0 -->\n",
-        "<g id=\"edge2\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
+        "<g id=\"edge8\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M376.663,-340.087C374.75,-351.6 379.36,-361.87 390.492,-361.87 399.19,-361.87 403.906,-355.602 404.641,-347.369\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"404.321,-340.087 407.775,-346.942 404.475,-343.583 404.628,-347.08 404.628,-347.08 404.628,-347.08 404.475,-343.583 401.481,-347.218 404.321,-340.087 404.321,-340.087\"/>\n",
         "<text text-anchor=\"start\" x=\"372.492\" y=\"-365.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;5 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>0&#45;&gt;5</title>\n",
+        "<g id=\"edge10\" class=\"edge\"><title>0&#45;&gt;5</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M416.844,-310.208C422.87,-308.876 429.308,-307.681 435.362,-307 460.857,-304.131 489.667,-304.824 512.312,-306.262\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"519.435,-306.752 512.235,-309.414 515.943,-306.512 512.452,-306.272 512.452,-306.272 512.452,-306.272 515.943,-306.512 512.668,-303.129 519.435,-306.752 519.435,-306.752\"/>\n",
         "<text text-anchor=\"start\" x=\"448.362\" y=\"-310.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;6 -->\n",
-        "<g id=\"edge24\" class=\"edge\"><title>5&#45;&gt;6</title>\n",
+        "<g id=\"edge14\" class=\"edge\"><title>5&#45;&gt;6</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M585.837,-319.983C592.202,-321.623 598.89,-323.085 605.245,-324 734.36,-342.596 768.306,-330.718 898.725,-328 909.083,-327.784 920.274,-327.394 930.673,-326.964\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"937.726,-326.662 930.867,-330.109 934.229,-326.812 930.732,-326.962 930.732,-326.962 930.732,-326.962 934.229,-326.812 930.598,-323.815 937.726,-326.662 937.726,-326.662\"/>\n",
         "<text text-anchor=\"start\" x=\"784.485\" y=\"-337.8\" font-family=\"Lato\" font-size=\"14.00\">c</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;0 -->\n",
-        "<g id=\"edge22\" class=\"edge\"><title>5&#45;&gt;0</title>\n",
+        "<g id=\"edge12\" class=\"edge\"><title>5&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M520.438,-318.696C514.161,-320.071 507.59,-321.276 501.362,-322 472.225,-325.386 464.649,-323.664 435.362,-322 431.818,-321.799 428.12,-321.507 424.441,-321.163\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"417.432,-320.45 424.715,-318.025 420.914,-320.804 424.396,-321.159 424.396,-321.159 424.396,-321.159 420.914,-320.804 424.077,-324.292 417.432,-320.45 417.432,-320.45\"/>\n",
         "<text text-anchor=\"start\" x=\"435.362\" y=\"-327.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;5 -->\n",
-        "<g id=\"edge23\" class=\"edge\"><title>5&#45;&gt;5</title>\n",
+        "<g id=\"edge13\" class=\"edge\"><title>5&#45;&gt;5</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M537.989,-340.41C537.308,-352.168 542.413,-361.941 553.304,-361.941 561.812,-361.941 566.789,-355.976 568.235,-347.76\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"568.619,-340.41 571.399,-347.565 568.436,-343.906 568.253,-347.401 568.253,-347.401 568.253,-347.401 568.436,-343.906 565.108,-347.237 568.619,-340.41 568.619,-340.41\"/>\n",
         "<text text-anchor=\"start\" x=\"533.304\" y=\"-365.741\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
@@ -1320,103 +1319,103 @@
         "<text text-anchor=\"start\" x=\"704.115\" y=\"-240.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#b276b2\">\u2778</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;7 -->\n",
-        "<g id=\"edge25\" class=\"edge\"><title>5&#45;&gt;7</title>\n",
+        "<g id=\"edge15\" class=\"edge\"><title>5&#45;&gt;7</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M587.223,-307.418C610.467,-304.627 641.865,-298.86 667.245,-287 673.865,-283.906 680.372,-279.621 686.263,-275.108\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"691.931,-270.555 688.446,-277.395 689.202,-272.747 686.473,-274.939 686.473,-274.939 686.473,-274.939 689.202,-272.747 684.501,-272.484 691.931,-270.555 691.931,-270.555\"/>\n",
         "<text text-anchor=\"start\" x=\"605.245\" y=\"-308.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 7&#45;&gt;6 -->\n",
-        "<g id=\"edge30\" class=\"edge\"><title>7&#45;&gt;6</title>\n",
+        "<g id=\"edge19\" class=\"edge\"><title>7&#45;&gt;6</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M723.736,-227.525C730.987,-214.105 742.01,-198.676 756.985,-191 813.214,-162.179 846.198,-166.882 898.725,-202 928.236,-221.73 947.267,-257.988 958.294,-286.045\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"960.793,-292.622 955.362,-287.198 959.55,-289.351 958.307,-286.079 958.307,-286.079 958.307,-286.079 959.55,-289.351 961.251,-284.96 960.793,-292.622 960.793,-292.622\"/>\n",
         "<text text-anchor=\"start\" x=\"845.855\" y=\"-205.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; c</text>\n",
         "</g>\n",
         "<!-- 7&#45;&gt;1 -->\n",
-        "<g id=\"edge28\" class=\"edge\"><title>7&#45;&gt;1</title>\n",
+        "<g id=\"edge17\" class=\"edge\"><title>7&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M739.198,-252.697C764.35,-253.369 802.514,-254.388 829.787,-255.117\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"836.82,-255.305 829.739,-258.266 833.322,-255.211 829.823,-255.118 829.823,-255.118 829.823,-255.118 833.322,-255.211 829.907,-251.969 836.82,-255.305 836.82,-255.305\"/>\n",
         "<text text-anchor=\"start\" x=\"756.985\" y=\"-258.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; c</text>\n",
         "</g>\n",
         "<!-- 7&#45;&gt;8 -->\n",
-        "<g id=\"edge32\" class=\"edge\"><title>7&#45;&gt;8</title>\n",
+        "<g id=\"edge21\" class=\"edge\"><title>7&#45;&gt;8</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M720.839,-226.238C728.129,-204.294 740.415,-172.516 756.985,-148 779.396,-114.841 813.352,-83.4366 836.734,-63.7617\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"842.142,-59.2611 838.776,-66.16 839.452,-61.4999 836.761,-63.7388 836.761,-63.7388 836.761,-63.7388 839.452,-61.4999 834.746,-61.3175 842.142,-59.2611 842.142,-59.2611\"/>\n",
         "<text text-anchor=\"start\" x=\"758.985\" y=\"-151.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; c</text>\n",
         "</g>\n",
         "<!-- 7&#45;&gt;0 -->\n",
-        "<g id=\"edge27\" class=\"edge\"><title>7&#45;&gt;0</title>\n",
+        "<g id=\"edge16\" class=\"edge\"><title>7&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M685.502,-248.089C648.268,-243.276 577.308,-237.402 519.362,-252 482.63,-261.254 444.405,-282.459 419.429,-298.146\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"413.373,-302.004 417.584,-295.586 416.325,-300.123 419.277,-298.243 419.277,-298.243 419.277,-298.243 416.325,-300.123 420.97,-300.899 413.373,-302.004 413.373,-302.004\"/>\n",
         "<text text-anchor=\"start\" x=\"520.304\" y=\"-255.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 7&#45;&gt;5 -->\n",
-        "<g id=\"edge29\" class=\"edge\"><title>7&#45;&gt;5</title>\n",
+        "<g id=\"edge18\" class=\"edge\"><title>7&#45;&gt;5</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M685.23,-252.094C663.105,-253.05 630.877,-256.561 605.245,-268 597.558,-271.43 590.089,-276.349 583.346,-281.619\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"577.863,-286.105 581.287,-279.234 580.572,-283.888 583.281,-281.672 583.281,-281.672 583.281,-281.672 580.572,-283.888 585.276,-284.11 577.863,-286.105 577.863,-286.105\"/>\n",
         "<text text-anchor=\"start\" x=\"616.245\" y=\"-271.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 7&#45;&gt;7 -->\n",
-        "<g id=\"edge31\" class=\"edge\"><title>7&#45;&gt;7</title>\n",
+        "<g id=\"edge20\" class=\"edge\"><title>7&#45;&gt;7</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M698.579,-275.546C696.907,-286.872 701.419,-296.87 712.115,-296.87 720.471,-296.87 725.052,-290.768 725.86,-282.698\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"725.651,-275.546 729.004,-282.451 725.753,-279.045 725.856,-282.543 725.856,-282.543 725.856,-282.543 725.753,-279.045 722.707,-282.636 725.651,-275.546 725.651,-275.546\"/>\n",
         "<text text-anchor=\"start\" x=\"681.115\" y=\"-300.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;6 -->\n",
-        "<g id=\"edge15\" class=\"edge\"><title>3&#45;&gt;6</title>\n",
+        "<g id=\"edge25\" class=\"edge\"><title>3&#45;&gt;6</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M248.804,-445.016C276.447,-478.728 329.604,-532 389.492,-532 389.492,-532 389.492,-532 864.855,-532 938.544,-532 960.944,-426.71 967.732,-366.314\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"968.485,-359.182 970.882,-366.474 968.117,-362.663 967.75,-366.143 967.75,-366.143 967.75,-366.143 968.117,-362.663 964.617,-365.813 968.485,-359.182 968.485,-359.182\"/>\n",
         "<text text-anchor=\"start\" x=\"618.245\" y=\"-535.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; c</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;1 -->\n",
-        "<g id=\"edge13\" class=\"edge\"><title>3&#45;&gt;1</title>\n",
+        "<g id=\"edge23\" class=\"edge\"><title>3&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M259.066,-431.446C342.79,-466.322 581.561,-550.984 746.985,-462 812.598,-426.705 843.426,-337.849 855.806,-289.164\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"857.5,-282.283 858.885,-289.834 856.663,-285.682 855.826,-289.08 855.826,-289.08 855.826,-289.08 856.663,-285.682 852.768,-288.327 857.5,-282.283 857.5,-282.283\"/>\n",
         "<text text-anchor=\"start\" x=\"537.304\" y=\"-505.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; c</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;0 -->\n",
-        "<g id=\"edge12\" class=\"edge\"><title>3&#45;&gt;0</title>\n",
+        "<g id=\"edge22\" class=\"edge\"><title>3&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M257.061,-400.176C286.355,-381.777 331.797,-353.237 361.097,-334.834\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"367.093,-331.069 362.84,-337.459 364.129,-332.93 361.165,-334.792 361.165,-334.792 361.165,-334.792 364.129,-332.93 359.489,-332.124 367.093,-331.069 367.093,-331.069\"/>\n",
         "<text text-anchor=\"start\" x=\"294.622\" y=\"-389.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;5 -->\n",
-        "<g id=\"edge14\" class=\"edge\"><title>3&#45;&gt;5</title>\n",
+        "<g id=\"edge24\" class=\"edge\"><title>3&#45;&gt;5</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M261.614,-415.181C285.137,-412.895 317.472,-409.195 345.622,-404 418.726,-390.509 436.998,-380.193 501.362,-343 506.991,-339.748 512.864,-336.147 518.538,-332.554\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"524.596,-328.675 520.399,-335.103 521.648,-330.563 518.701,-332.45 518.701,-332.45 518.701,-332.45 521.648,-330.563 517.002,-329.797 524.596,-328.675 524.596,-328.675\"/>\n",
         "<text text-anchor=\"start\" x=\"370.492\" y=\"-405.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 4&#45;&gt;6 -->\n",
-        "<g id=\"edge19\" class=\"edge\"><title>4&#45;&gt;6</title>\n",
+        "<g id=\"edge29\" class=\"edge\"><title>4&#45;&gt;6</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M259.868,-162.119C349.094,-132.667 612.268,-57.5477 818.985,-118 859.362,-129.808 869.773,-138.478 898.725,-169 929.959,-201.928 949.481,-250.832 960.178,-285.084\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"962.327,-292.159 957.278,-286.377 961.31,-288.81 960.292,-285.461 960.292,-285.461 960.292,-285.461 961.31,-288.81 963.306,-284.546 962.327,-292.159 962.327,-292.159\"/>\n",
         "<text text-anchor=\"start\" x=\"618.245\" y=\"-99.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; c</text>\n",
         "</g>\n",
         "<!-- 4&#45;&gt;1 -->\n",
-        "<g id=\"edge17\" class=\"edge\"><title>4&#45;&gt;1</title>\n",
+        "<g id=\"edge27\" class=\"edge\"><title>4&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M261.724,-171.805C344.713,-169.603 568.065,-168.64 746.985,-213 776.744,-220.378 809.383,-232.917 832.414,-242.557\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"838.942,-245.319 831.267,-245.492 835.718,-243.955 832.495,-242.591 832.495,-242.591 832.495,-242.591 835.718,-243.955 833.723,-239.69 838.942,-245.319 838.942,-245.319\"/>\n",
         "<text text-anchor=\"start\" x=\"522.304\" y=\"-188.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; c</text>\n",
         "</g>\n",
         "<!-- 4&#45;&gt;8 -->\n",
-        "<g id=\"edge21\" class=\"edge\"><title>4&#45;&gt;8</title>\n",
+        "<g id=\"edge31\" class=\"edge\"><title>4&#45;&gt;8</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M239.866,-141.113C248.12,-121.831 261.148,-98.1297 279.622,-83 319.378,-50.4424 338.107,-47 389.492,-47 389.492,-47 389.492,-47 713.115,-47 753.152,-47 799.188,-45.5534 829.529,-44.4001\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"836.891,-44.1142 830.019,-47.5335 833.394,-44.2501 829.897,-44.3859 829.897,-44.3859 829.897,-44.3859 833.394,-44.2501 829.774,-41.2382 836.891,-44.1142 836.891,-44.1142\"/>\n",
         "<text text-anchor=\"start\" x=\"524.304\" y=\"-50.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; c</text>\n",
         "</g>\n",
         "<!-- 4&#45;&gt;0 -->\n",
-        "<g id=\"edge16\" class=\"edge\"><title>4&#45;&gt;0</title>\n",
+        "<g id=\"edge26\" class=\"edge\"><title>4&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M236.628,-205.831C244.017,-229.759 257.323,-261.309 279.622,-281 301.03,-299.903 332.58,-308.915 356.386,-313.19\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"363.506,-314.371 356.085,-316.333 360.053,-313.798 356.6,-313.226 356.6,-313.226 356.6,-313.226 360.053,-313.798 357.115,-310.118 363.506,-314.371 363.506,-314.371\"/>\n",
         "<text text-anchor=\"start\" x=\"279.622\" y=\"-315.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 4&#45;&gt;5 -->\n",
-        "<g id=\"edge18\" class=\"edge\"><title>4&#45;&gt;5</title>\n",
+        "<g id=\"edge28\" class=\"edge\"><title>4&#45;&gt;5</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M260.741,-181.809C332.775,-201.604 501.202,-247.893 501.362,-248 512.166,-255.196 511.173,-260.929 519.362,-271 521.487,-273.613 523.707,-276.31 525.947,-279.007\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"530.548,-284.52 523.645,-281.165 528.306,-281.833 526.063,-279.146 526.063,-279.146 526.063,-279.146 528.306,-281.833 528.481,-277.128 530.548,-284.52 530.548,-284.52\"/>\n",
         "<text text-anchor=\"start\" x=\"370.492\" y=\"-227.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 4&#45;&gt;7 -->\n",
-        "<g id=\"edge20\" class=\"edge\"><title>4&#45;&gt;7</title>\n",
+        "<g id=\"edge30\" class=\"edge\"><title>4&#45;&gt;7</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M261.491,-176.573C284.957,-179.215 317.273,-183.029 345.622,-187 489.022,-207.085 526.086,-206.734 667.245,-239 671.214,-239.907 675.351,-240.972 679.432,-242.095\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"686.204,-244.023 678.609,-245.136 682.838,-243.065 679.472,-242.107 679.472,-242.107 679.472,-242.107 682.838,-243.065 680.334,-239.077 686.204,-244.023 686.204,-244.023\"/>\n",
         "<text text-anchor=\"start\" x=\"437.362\" y=\"-211.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
@@ -1425,7 +1424,7 @@
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f734006f090> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd270264180> >"
        ]
       }
      ],
@@ -1508,7 +1507,7 @@
         "<text text-anchor=\"start\" x=\"855.87\" y=\"-283.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;4 -->\n",
-        "<g id=\"edge5\" class=\"edge\"><title>0&#45;&gt;4</title>\n",
+        "<g id=\"edge35\" class=\"edge\"><title>0&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M58.0785,-303.931C62.6265,-361.975 85.3776,-541 193,-541 193,-541 193,-541 773,-541 801.6,-541 805.147,-521.021 819,-496 848.54,-442.645 858.191,-371.045 861.343,-329.275\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"861.843,-322.084 864.5,-329.286 861.6,-325.575 861.357,-329.067 861.357,-329.067 861.357,-329.067 861.6,-325.575 858.215,-328.848 861.843,-322.084 861.843,-322.084\"/>\n",
         "<text text-anchor=\"start\" x=\"485.5\" y=\"-544.8\" font-family=\"Lato\" font-size=\"14.00\">c</text>\n",
@@ -1519,7 +1518,7 @@
         "<text text-anchor=\"middle\" x=\"489\" y=\"-285.3\" font-family=\"Lato\" font-size=\"14.00\">3</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;3 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>0&#45;&gt;3</title>\n",
+        "<g id=\"edge34\" class=\"edge\"><title>0&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M73.4476,-280.48C103.903,-270.584 171.326,-250.183 230,-243 317.664,-232.269 420.724,-264.26 465.428,-280.354\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"472.09,-282.792 464.434,-283.345 468.803,-281.589 465.516,-280.386 465.516,-280.386 465.516,-280.386 468.803,-281.589 466.598,-277.428 472.09,-282.792 472.09,-282.792\"/>\n",
         "<text text-anchor=\"start\" x=\"243\" y=\"-246.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
@@ -1527,10 +1526,10 @@
         "<!-- 1 -->\n",
         "<g id=\"node9\" class=\"node\"><title>1</title>\n",
         "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"194\" cy=\"-381\" rx=\"18\" ry=\"18\"/>\n",
-        "<text text-anchor=\"middle\" x=\"194\" y=\"-377.3\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
+        "<text text-anchor=\"start\" x=\"189.5\" y=\"-377.3\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;1 -->\n",
-        "<g id=\"edge2\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
+        "<g id=\"edge32\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M71.2973,-295.987C95.6441,-312.994 145.208,-347.616 172.986,-367.02\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"178.894,-371.147 171.352,-369.72 176.025,-369.142 173.156,-367.138 173.156,-367.138 173.156,-367.138 176.025,-369.142 174.96,-364.556 178.894,-371.147 178.894,-371.147\"/>\n",
         "<text text-anchor=\"start\" x=\"92\" y=\"-359.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
@@ -1541,16 +1540,16 @@
         "<text text-anchor=\"middle\" x=\"194\" y=\"-150.3\" font-family=\"Lato\" font-size=\"14.00\">2</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;2 -->\n",
-        "<g id=\"edge3\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
+        "<g id=\"edge33\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M62.1305,-268.929C67.5363,-253.204 77.3224,-229.958 92,-214 114.022,-190.057 147.809,-172.658 170.153,-162.943\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"176.694,-160.176 171.474,-165.804 173.47,-161.539 170.247,-162.903 170.247,-162.903 170.247,-162.903 173.47,-161.539 169.02,-160.002 176.694,-160.176 176.694,-160.176\"/>\n",
         "<text text-anchor=\"start\" x=\"94\" y=\"-217.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 4&#45;&gt;4 -->\n",
-        "<g id=\"edge20\" class=\"edge\"><title>4&#45;&gt;4</title>\n",
+        "<g id=\"edge2\" class=\"edge\"><title>4&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M854.577,-320.37C853.937,-330.924 857.034,-339.87 863.87,-339.87 869.104,-339.87 872.146,-334.626 872.997,-327.431\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"873.163,-320.37 876.148,-327.442 873.081,-323.869 872.999,-327.368 872.999,-327.368 872.999,-327.368 873.081,-323.869 869.849,-327.294 873.163,-320.37 873.163,-320.37\"/>\n",
-        "<text text-anchor=\"middle\" x=\"863.87\" y=\"-343.67\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
+        "<text text-anchor=\"start\" x=\"859.37\" y=\"-343.67\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- 7 -->\n",
         "<g id=\"node4\" class=\"node\"><title>7</title>\n",
@@ -1558,13 +1557,13 @@
         "<text text-anchor=\"middle\" x=\"772\" y=\"-234.3\" font-family=\"Lato\" font-size=\"14.00\">7</text>\n",
         "</g>\n",
         "<!-- 7&#45;&gt;4 -->\n",
-        "<g id=\"edge32\" class=\"edge\"><title>7&#45;&gt;4</title>\n",
+        "<g id=\"edge4\" class=\"edge\"><title>7&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M787.84,-247.412C800.516,-255.452 819.104,-267.242 834.608,-277.075\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"840.597,-280.874 832.999,-279.784 837.642,-278.999 834.686,-277.124 834.686,-277.124 834.686,-277.124 837.642,-278.999 836.373,-274.464 840.597,-280.874 840.597,-280.874\"/>\n",
         "<text text-anchor=\"start\" x=\"808\" y=\"-270.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "</g>\n",
         "<!-- 7&#45;&gt;7 -->\n",
-        "<g id=\"edge31\" class=\"edge\"><title>7&#45;&gt;7</title>\n",
+        "<g id=\"edge3\" class=\"edge\"><title>7&#45;&gt;7</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M764.969,-254.664C763.406,-264.625 765.75,-274 772,-274 776.688,-274 779.178,-268.727 779.471,-261.888\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"779.031,-254.664 782.601,-261.46 779.244,-258.158 779.456,-261.651 779.456,-261.651 779.456,-261.651 779.244,-258.158 776.312,-261.842 779.031,-254.664 779.031,-254.664\"/>\n",
         "<text text-anchor=\"start\" x=\"768.5\" y=\"-277.8\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
@@ -1575,19 +1574,19 @@
         "<text text-anchor=\"middle\" x=\"772\" y=\"-30.3\" font-family=\"Lato\" font-size=\"14.00\">8</text>\n",
         "</g>\n",
         "<!-- 8&#45;&gt;4 -->\n",
-        "<g id=\"edge34\" class=\"edge\"><title>8&#45;&gt;4</title>\n",
+        "<g id=\"edge6\" class=\"edge\"><title>8&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M786.396,-44.8966C796.897,-54.1856 811.026,-68.4705 819,-84 848.566,-141.579 858.206,-217.69 861.349,-260.995\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"861.832,-268.172 858.219,-261.399 861.597,-264.679 861.362,-261.187 861.362,-261.187 861.362,-261.187 861.597,-264.679 864.505,-260.976 861.832,-268.172 861.832,-268.172\"/>\n",
         "<text text-anchor=\"start\" x=\"808\" y=\"-87.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "</g>\n",
         "<!-- 8&#45;&gt;7 -->\n",
-        "<g id=\"edge33\" class=\"edge\"><title>8&#45;&gt;7</title>\n",
+        "<g id=\"edge5\" class=\"edge\"><title>8&#45;&gt;7</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M761.116,-48.5917C743.607,-73.0775 709.895,-124.665 697.5,-174.5 695.891,-180.97 694.322,-183.639 697.5,-189.5 708.151,-209.143 730.583,-222.08 748.064,-229.614\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"754.725,-232.332 747.054,-232.604 751.484,-231.009 748.244,-229.687 748.244,-229.687 748.244,-229.687 751.484,-231.009 749.434,-226.771 754.725,-232.332 754.725,-232.332\"/>\n",
         "<text text-anchor=\"start\" x=\"686.5\" y=\"-178.3\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b</text>\n",
         "</g>\n",
         "<!-- 8&#45;&gt;8 -->\n",
-        "<g id=\"edge35\" class=\"edge\"><title>8&#45;&gt;8</title>\n",
+        "<g id=\"edge7\" class=\"edge\"><title>8&#45;&gt;8</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M764.969,-50.6641C763.406,-60.625 765.75,-70 772,-70 776.688,-70 779.178,-64.7266 779.471,-57.8876\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"779.031,-50.6641 782.601,-57.4598 779.244,-54.1576 779.456,-57.6511 779.456,-57.6511 779.456,-57.6511 779.244,-54.1576 776.312,-57.8425 779.031,-50.6641 779.031,-50.6641\"/>\n",
         "<text text-anchor=\"start\" x=\"755\" y=\"-73.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b</text>\n",
@@ -1598,43 +1597,43 @@
         "<text text-anchor=\"middle\" x=\"334\" y=\"-285.3\" font-family=\"Lato\" font-size=\"14.00\">5</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;4 -->\n",
-        "<g id=\"edge24\" class=\"edge\"><title>5&#45;&gt;4</title>\n",
+        "<g id=\"edge11\" class=\"edge\"><title>5&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M340.203,-306.023C345.664,-320.87 355.753,-341.744 372,-353 403.111,-374.554 418.281,-363.878 456,-367 618.488,-380.448 664.221,-365.253 819,-314 823.447,-312.527 828.065,-310.781 832.563,-308.952\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"839.033,-306.237 833.797,-311.851 835.806,-307.592 832.579,-308.946 832.579,-308.946 832.579,-308.946 835.806,-307.592 831.36,-306.041 839.033,-306.237 839.033,-306.237\"/>\n",
         "<text text-anchor=\"start\" x=\"620\" y=\"-371.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; c</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;7 -->\n",
-        "<g id=\"edge22\" class=\"edge\"><title>5&#45;&gt;7</title>\n",
+        "<g id=\"edge9\" class=\"edge\"><title>5&#45;&gt;7</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M346.469,-302.602C353.237,-309.865 362.351,-318.431 372,-324 430.536,-357.784 455.416,-360.594 522,-349 612.734,-333.2 709.398,-277.287 750.553,-251.37\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"756.672,-247.479 752.455,-253.893 753.718,-249.357 750.765,-251.235 750.765,-251.235 750.765,-251.235 753.718,-249.357 749.074,-248.577 756.672,-247.479 756.672,-247.479\"/>\n",
         "<text text-anchor=\"start\" x=\"555\" y=\"-349.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; c</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;5 -->\n",
-        "<g id=\"edge21\" class=\"edge\"><title>5&#45;&gt;5</title>\n",
+        "<g id=\"edge8\" class=\"edge\"><title>5&#45;&gt;5</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M322.57,-303.042C318.296,-313.913 322.105,-325 334,-325 343.293,-325 347.651,-318.233 347.075,-310.089\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"345.43,-303.042 350.088,-309.143 346.225,-306.45 347.021,-309.859 347.021,-309.859 347.021,-309.859 346.225,-306.45 343.953,-310.575 345.43,-303.042 345.43,-303.042\"/>\n",
         "<text text-anchor=\"start\" x=\"316\" y=\"-328.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;3 -->\n",
-        "<g id=\"edge23\" class=\"edge\"><title>5&#45;&gt;3</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M351.851,-285.124C358.138,-283.86 365.361,-282.623 372,-282 401.205,-279.262 408.738,-279.962 438,-282 446.435,-282.588 455.613,-283.726 463.776,-284.917\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"470.937,-286.012 463.542,-288.068 467.478,-285.483 464.018,-284.954 464.018,-284.954 464.018,-284.954 467.478,-285.483 464.494,-281.84 470.937,-286.012 470.937,-286.012\"/>\n",
-        "<text text-anchor=\"start\" x=\"385\" y=\"-285.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
+        "<g id=\"edge10\" class=\"edge\"><title>5&#45;&gt;3</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M351.929,-287.338C358.224,-286.796 365.432,-286.266 372,-286 401.309,-284.814 408.68,-285.121 438,-286 446.385,-286.251 455.551,-286.739 463.718,-287.25\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"470.887,-287.719 463.696,-290.405 467.394,-287.49 463.902,-287.262 463.902,-287.262 463.902,-287.262 467.394,-287.49 464.108,-284.118 470.887,-287.719 470.887,-287.719\"/>\n",
+        "<text text-anchor=\"start\" x=\"385\" y=\"-289.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;4 -->\n",
-        "<g id=\"edge18\" class=\"edge\"><title>3&#45;&gt;4</title>\n",
+        "<g id=\"edge14\" class=\"edge\"><title>3&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M505.785,-296.693C515.418,-300.955 528.126,-305.82 540,-308 573.477,-314.146 655.533,-310.125 798,-301 808.354,-300.337 819.617,-299.378 829.809,-298.422\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"837.012,-297.729 830.345,-301.535 833.528,-298.064 830.044,-298.399 830.044,-298.399 830.044,-298.399 833.528,-298.064 829.743,-295.264 837.012,-297.729 837.012,-297.729\"/>\n",
         "<text text-anchor=\"start\" x=\"701.5\" y=\"-312.8\" font-family=\"Lato\" font-size=\"14.00\">c</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;5 -->\n",
-        "<g id=\"edge16\" class=\"edge\"><title>3&#45;&gt;5</title>\n",
+        "<g id=\"edge12\" class=\"edge\"><title>3&#45;&gt;5</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M471.511,-293.993C461.847,-296.657 449.347,-299.657 438,-301 408.87,-304.447 400.973,-305.581 372,-301 367.36,-300.266 362.51,-299.045 357.906,-297.656\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"350.94,-295.38 358.573,-294.56 354.267,-296.467 357.594,-297.554 357.594,-297.554 357.594,-297.554 354.267,-296.467 356.616,-300.549 350.94,-295.38 350.94,-295.38\"/>\n",
         "<text text-anchor=\"start\" x=\"372\" y=\"-308.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;3 -->\n",
-        "<g id=\"edge17\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
+        "<g id=\"edge13\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M476.162,-301.918C470.307,-313.135 474.586,-325 489,-325 500.486,-325 505.537,-317.465 504.151,-308.729\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"501.838,-301.918 507.072,-307.533 502.963,-305.232 504.089,-308.546 504.089,-308.546 504.089,-308.546 502.963,-305.232 501.107,-309.56 501.838,-301.918 501.838,-301.918\"/>\n",
         "<text text-anchor=\"start\" x=\"469\" y=\"-328.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
@@ -1645,103 +1644,103 @@
         "<text text-anchor=\"middle\" x=\"638\" y=\"-234.3\" font-family=\"Lato\" font-size=\"14.00\">6</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;6 -->\n",
-        "<g id=\"edge19\" class=\"edge\"><title>3&#45;&gt;6</title>\n",
+        "<g id=\"edge15\" class=\"edge\"><title>3&#45;&gt;6</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M507.309,-289.825C530.207,-290.205 571.256,-288.372 602,-273 609.415,-269.293 616.211,-263.409 621.803,-257.516\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"626.582,-252.164 624.269,-259.484 624.251,-254.775 621.92,-257.385 621.92,-257.385 621.92,-257.385 624.251,-254.775 619.57,-255.287 626.582,-252.164 626.582,-252.164\"/>\n",
         "<text text-anchor=\"start\" x=\"540\" y=\"-292.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 6&#45;&gt;4 -->\n",
-        "<g id=\"edge28\" class=\"edge\"><title>6&#45;&gt;4</title>\n",
+        "<g id=\"edge19\" class=\"edge\"><title>6&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M642.992,-220.687C647.593,-205.147 656.835,-183.253 674,-173 697.657,-158.87 708.779,-168.718 736,-173 764.602,-177.499 775.095,-175.289 798,-193 821.724,-211.343 839.174,-240.989 849.964,-263.604\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"852.964,-270.078 847.162,-265.051 851.492,-266.902 850.02,-263.726 850.02,-263.726 850.02,-263.726 851.492,-266.902 852.879,-262.402 852.964,-270.078 852.964,-270.078\"/>\n",
         "<text text-anchor=\"start\" x=\"754\" y=\"-196.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; c</text>\n",
         "</g>\n",
         "<!-- 6&#45;&gt;7 -->\n",
-        "<g id=\"edge26\" class=\"edge\"><title>6&#45;&gt;7</title>\n",
+        "<g id=\"edge17\" class=\"edge\"><title>6&#45;&gt;7</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M656.257,-238C679.282,-238 720.189,-238 746.429,-238\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"753.739,-238 746.739,-241.15 750.239,-238 746.739,-238 746.739,-238 746.739,-238 750.239,-238 746.739,-234.85 753.739,-238 753.739,-238\"/>\n",
         "<text text-anchor=\"start\" x=\"674\" y=\"-241.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; c</text>\n",
         "</g>\n",
         "<!-- 6&#45;&gt;8 -->\n",
-        "<g id=\"edge30\" class=\"edge\"><title>6&#45;&gt;8</title>\n",
+        "<g id=\"edge21\" class=\"edge\"><title>6&#45;&gt;8</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M642.09,-220.071C646.534,-197.696 656.223,-158.866 674,-130 694.669,-96.4379 729.437,-65.9557 751.252,-48.7235\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"757.039,-44.223 753.447,-51.0069 754.276,-46.3717 751.513,-48.5204 751.513,-48.5204 751.513,-48.5204 754.276,-46.3717 749.579,-46.0339 757.039,-44.223 757.039,-44.223\"/>\n",
         "<text text-anchor=\"start\" x=\"676\" y=\"-133.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; c</text>\n",
         "</g>\n",
         "<!-- 6&#45;&gt;5 -->\n",
-        "<g id=\"edge25\" class=\"edge\"><title>6&#45;&gt;5</title>\n",
+        "<g id=\"edge16\" class=\"edge\"><title>6&#45;&gt;5</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M619.814,-237.447C600.413,-236.952 567.915,-236.509 540,-238 502.506,-240.003 492.639,-238.791 456,-247 420.649,-254.921 381.287,-269.77 357.337,-279.521\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"350.714,-282.249 355.987,-276.671 353.95,-280.916 357.186,-279.583 357.186,-279.583 357.186,-279.583 353.95,-280.916 358.386,-282.496 350.714,-282.249 350.714,-282.249\"/>\n",
         "<text text-anchor=\"start\" x=\"456\" y=\"-250.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 6&#45;&gt;3 -->\n",
-        "<g id=\"edge27\" class=\"edge\"><title>6&#45;&gt;3</title>\n",
+        "<g id=\"edge18\" class=\"edge\"><title>6&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M619.907,-238.535C600.029,-239.667 566.552,-243.175 540,-254 528.732,-258.594 517.511,-266.11 508.563,-273.001\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"503.033,-277.403 506.548,-270.579 505.772,-275.223 508.51,-273.044 508.51,-273.044 508.51,-273.044 505.772,-275.223 510.472,-275.508 503.033,-277.403 503.033,-277.403\"/>\n",
         "<text text-anchor=\"start\" x=\"551\" y=\"-257.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 6&#45;&gt;6 -->\n",
-        "<g id=\"edge29\" class=\"edge\"><title>6&#45;&gt;6</title>\n",
+        "<g id=\"edge20\" class=\"edge\"><title>6&#45;&gt;6</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M627.087,-252.417C623.276,-263.166 626.914,-274 638,-274 646.661,-274 650.776,-267.387 650.344,-259.369\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"648.913,-252.417 653.41,-258.637 649.619,-255.845 650.325,-259.273 650.325,-259.273 650.325,-259.273 649.619,-255.845 647.239,-259.908 648.913,-252.417 648.913,-252.417\"/>\n",
         "<text text-anchor=\"start\" x=\"607\" y=\"-277.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;4 -->\n",
-        "<g id=\"edge9\" class=\"edge\"><title>1&#45;&gt;4</title>\n",
+        "<g id=\"edge25\" class=\"edge\"><title>1&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M201.047,-397.796C206.737,-411.644 216.419,-431.047 230,-444 266.965,-479.255 281.918,-495 333,-495 333,-495 333,-495 773,-495 844.915,-495 859.631,-386.081 862.405,-329\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"862.699,-321.973 865.554,-329.098 862.553,-325.47 862.407,-328.967 862.407,-328.967 862.407,-328.967 862.553,-325.47 859.26,-328.835 862.699,-321.973 862.699,-321.973\"/>\n",
         "<text text-anchor=\"start\" x=\"553\" y=\"-498.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;7 -->\n",
-        "<g id=\"edge7\" class=\"edge\"><title>1&#45;&gt;7</title>\n",
+        "<g id=\"edge23\" class=\"edge\"><title>1&#45;&gt;7</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M207.946,-393.044C231.127,-413.301 282.077,-452 333,-452 333,-452 333,-452 572,-452 663.378,-452 682.342,-401.965 736,-328 750.403,-308.146 759.775,-281.589 765.162,-262.475\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"767.034,-255.544 768.25,-263.123 766.122,-258.923 765.209,-262.302 765.209,-262.302 765.209,-262.302 766.122,-258.923 762.168,-261.481 767.034,-255.544 767.034,-255.544\"/>\n",
         "<text text-anchor=\"start\" x=\"473\" y=\"-455.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;5 -->\n",
-        "<g id=\"edge6\" class=\"edge\"><title>1&#45;&gt;5</title>\n",
+        "<g id=\"edge22\" class=\"edge\"><title>1&#45;&gt;5</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M207.942,-369.524C214.396,-363.998 222.424,-357.414 230,-352 257.203,-332.562 290.492,-312.89 311.723,-300.821\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"317.905,-297.328 313.36,-303.514 314.858,-299.05 311.81,-300.771 311.81,-300.771 311.81,-300.771 314.858,-299.05 310.261,-298.029 317.905,-297.328 317.905,-297.328\"/>\n",
         "<text text-anchor=\"start\" x=\"245\" y=\"-355.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;3 -->\n",
-        "<g id=\"edge8\" class=\"edge\"><title>1&#45;&gt;3</title>\n",
+        "<g id=\"edge24\" class=\"edge\"><title>1&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M212.062,-379.598C252.967,-375.697 359.078,-362.356 438,-324 448.945,-318.681 460.132,-311.09 469.142,-304.337\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"474.724,-300.052 471.089,-306.813 471.947,-302.183 469.171,-304.315 469.171,-304.315 469.171,-304.315 471.947,-302.183 467.253,-301.816 474.724,-300.052 474.724,-300.052\"/>\n",
         "<text text-anchor=\"start\" x=\"314\" y=\"-369.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;4 -->\n",
-        "<g id=\"edge13\" class=\"edge\"><title>2&#45;&gt;4</title>\n",
+        "<g id=\"edge29\" class=\"edge\"><title>2&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M210.94,-147.15C278.195,-119.324 544.129,-20.1344 736,-104 801.747,-132.738 837.806,-215.694 853.388,-262.274\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"855.628,-269.147 850.464,-263.467 854.543,-265.819 853.459,-262.491 853.459,-262.491 853.459,-262.491 854.543,-265.819 856.454,-261.516 855.628,-269.147 855.628,-269.147\"/>\n",
         "<text text-anchor=\"start\" x=\"553\" y=\"-76.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;7 -->\n",
-        "<g id=\"edge11\" class=\"edge\"><title>2&#45;&gt;7</title>\n",
+        "<g id=\"edge27\" class=\"edge\"><title>2&#45;&gt;7</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M212.071,-152.242C217.766,-151.735 224.151,-151.25 230,-151 259.307,-149.746 266.674,-150.352 296,-151 396.518,-153.223 422.942,-143.785 522,-161 607.727,-175.898 705.159,-211.86 748.342,-228.836\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"755.038,-231.488 747.37,-231.839 751.784,-230.199 748.53,-228.91 748.53,-228.91 748.53,-228.91 751.784,-230.199 749.69,-225.982 755.038,-231.488 755.038,-231.488\"/>\n",
         "<text text-anchor=\"start\" x=\"458\" y=\"-164.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;8 -->\n",
-        "<g id=\"edge15\" class=\"edge\"><title>2&#45;&gt;8</title>\n",
+        "<g id=\"edge31\" class=\"edge\"><title>2&#45;&gt;8</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M197.172,-136.119C200.591,-115.776 209.147,-82.9326 230,-64 265.21,-32.0317 285.442,-35 333,-35 333,-35 333,-35 639,-35 676.545,-35 720.095,-34.5905 746.588,-34.2956\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"753.913,-34.2121 746.95,-37.4417 750.413,-34.252 746.914,-34.2919 746.914,-34.2919 746.914,-34.2919 750.413,-34.252 746.878,-31.1421 753.913,-34.2121 753.913,-34.2121\"/>\n",
         "<text text-anchor=\"start\" x=\"460\" y=\"-38.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;5 -->\n",
-        "<g id=\"edge10\" class=\"edge\"><title>2&#45;&gt;5</title>\n",
+        "<g id=\"edge26\" class=\"edge\"><title>2&#45;&gt;5</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M195.729,-172.07C197.695,-196.066 204.781,-238.18 230,-262 251.222,-282.045 285.453,-287.634 308.57,-288.974\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"315.654,-289.273 308.527,-292.125 312.157,-289.126 308.66,-288.978 308.66,-288.978 308.66,-288.978 312.157,-289.126 308.793,-285.831 315.654,-289.273 315.654,-289.273\"/>\n",
         "<text text-anchor=\"start\" x=\"230\" y=\"-291.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;3 -->\n",
-        "<g id=\"edge12\" class=\"edge\"><title>2&#45;&gt;3</title>\n",
+        "<g id=\"edge28\" class=\"edge\"><title>2&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M210.91,-160.735C216.853,-163.153 223.691,-165.819 230,-168 321.049,-199.481 364.419,-166.816 438,-229 451.967,-240.804 444.216,-252.015 456,-266 459.199,-269.796 463.155,-273.289 467.183,-276.344\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"473.055,-280.492 465.52,-279.026 470.196,-278.473 467.337,-276.453 467.337,-276.453 467.337,-276.453 470.196,-278.473 469.155,-273.88 473.055,-280.492 473.055,-280.492\"/>\n",
         "<text text-anchor=\"start\" x=\"314\" y=\"-192.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;6 -->\n",
-        "<g id=\"edge14\" class=\"edge\"><title>2&#45;&gt;6</title>\n",
+        "<g id=\"edge30\" class=\"edge\"><title>2&#45;&gt;6</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M212.27,-154.192C252.329,-154.917 354.523,-158.391 438,-175 503.475,-188.027 577.766,-214.929 614.28,-228.991\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"621.065,-231.624 613.4,-232.028 617.802,-230.358 614.54,-229.092 614.54,-229.092 614.54,-229.092 617.802,-230.358 615.679,-226.155 621.065,-231.624 621.065,-231.624\"/>\n",
         "<text text-anchor=\"start\" x=\"374\" y=\"-178.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
@@ -1750,7 +1749,7 @@
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f734006f0c0> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd270264db0> >"
        ]
       },
       {
@@ -1763,191 +1762,191 @@
         "<!-- Generated by graphviz version 2.38.0 (20140413.2041)\n",
         " -->\n",
         "<!-- Title: G Pages: 1 -->\n",
-        "<svg width=\"734pt\" height=\"275pt\"\n",
-        " viewBox=\"0.00 0.00 734.00 274.60\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
-        "<g id=\"graph0\" class=\"graph\" transform=\"scale(0.886752 0.886752) rotate(0) translate(4 305.672)\">\n",
+        "<svg width=\"734pt\" height=\"274pt\"\n",
+        " viewBox=\"0.00 0.00 734.00 274.14\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
+        "<g id=\"graph0\" class=\"graph\" transform=\"scale(0.886752 0.886752) rotate(0) translate(4 305.146)\">\n",
         "<title>G</title>\n",
-        "<polygon fill=\"white\" stroke=\"none\" points=\"-4,4 -4,-305.672 823.74,-305.672 823.74,4 -4,4\"/>\n",
-        "<text text-anchor=\"start\" x=\"369.87\" y=\"-287.472\" font-family=\"Lato\" font-size=\"14.00\">strictly weak</text>\n",
-        "<text text-anchor=\"start\" x=\"388.87\" y=\"-273.472\" font-family=\"Lato\" font-size=\"14.00\">Inf(</text>\n",
-        "<text text-anchor=\"start\" x=\"410.87\" y=\"-273.472\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
-        "<text text-anchor=\"start\" x=\"426.87\" y=\"-273.472\" font-family=\"Lato\" font-size=\"14.00\">)</text>\n",
+        "<polygon fill=\"white\" stroke=\"none\" points=\"-4,4 -4,-305.146 823.74,-305.146 823.74,4 -4,4\"/>\n",
+        "<text text-anchor=\"start\" x=\"369.87\" y=\"-286.946\" font-family=\"Lato\" font-size=\"14.00\">strictly weak</text>\n",
+        "<text text-anchor=\"start\" x=\"388.87\" y=\"-272.946\" font-family=\"Lato\" font-size=\"14.00\">Inf(</text>\n",
+        "<text text-anchor=\"start\" x=\"410.87\" y=\"-272.946\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
+        "<text text-anchor=\"start\" x=\"426.87\" y=\"-272.946\" font-family=\"Lato\" font-size=\"14.00\">)</text>\n",
         "<g id=\"clust1\" class=\"cluster\"><title>cluster_0</title>\n",
-        "<polygon fill=\"none\" stroke=\"green\" points=\"742,-144.672 742,-247.672 811.74,-247.672 811.74,-144.672 742,-144.672\"/>\n",
+        "<polygon fill=\"none\" stroke=\"green\" points=\"742,-144.146 742,-247.146 811.74,-247.146 811.74,-144.146 742,-144.146\"/>\n",
         "</g>\n",
         "<g id=\"clust2\" class=\"cluster\"><title>cluster_1</title>\n",
-        "<polygon fill=\"none\" stroke=\"red\" points=\"308,-31.6719 308,-167.672 664,-167.672 664,-31.6719 308,-31.6719\"/>\n",
+        "<polygon fill=\"none\" stroke=\"red\" points=\"308,-31.1464 308,-167.146 664,-167.146 664,-31.1464 308,-31.1464\"/>\n",
         "</g>\n",
         "<g id=\"clust3\" class=\"cluster\"><title>cluster_2</title>\n",
-        "<polygon fill=\"none\" stroke=\"black\" points=\"168,-14.6719 168,-66.6719 220,-66.6719 220,-14.6719 168,-14.6719\"/>\n",
+        "<polygon fill=\"none\" stroke=\"black\" points=\"168,-14.1464 168,-66.1464 220,-66.1464 220,-14.1464 168,-14.1464\"/>\n",
         "</g>\n",
         "<g id=\"clust4\" class=\"cluster\"><title>cluster_3</title>\n",
-        "<polygon fill=\"none\" stroke=\"black\" points=\"168,-135.672 168,-187.672 220,-187.672 220,-135.672 168,-135.672\"/>\n",
+        "<polygon fill=\"none\" stroke=\"black\" points=\"168,-135.146 168,-187.146 220,-187.146 220,-135.146 168,-135.146\"/>\n",
         "</g>\n",
         "<g id=\"clust5\" class=\"cluster\"><title>cluster_4</title>\n",
-        "<polygon fill=\"none\" stroke=\"black\" points=\"30,-14.6719 30,-66.6719 82,-66.6719 82,-14.6719 30,-14.6719\"/>\n",
+        "<polygon fill=\"none\" stroke=\"black\" points=\"30,-14.1464 30,-66.1464 82,-66.1464 82,-14.1464 30,-14.1464\"/>\n",
         "</g>\n",
         "<!-- I -->\n",
         "<!-- 0 -->\n",
         "<g id=\"node2\" class=\"node\"><title>0</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"56\" cy=\"-40.6719\" rx=\"18\" ry=\"18\"/>\n",
-        "<text text-anchor=\"middle\" x=\"56\" y=\"-36.9719\" font-family=\"Lato\" font-size=\"14.00\">0</text>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"56\" cy=\"-40.1464\" rx=\"18\" ry=\"18\"/>\n",
+        "<text text-anchor=\"middle\" x=\"56\" y=\"-36.4464\" font-family=\"Lato\" font-size=\"14.00\">0</text>\n",
         "</g>\n",
         "<!-- I&#45;&gt;0 -->\n",
         "<g id=\"edge1\" class=\"edge\"><title>I&#45;&gt;0</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M1.15491,-40.6719C2.79388,-40.6719 17.1543,-40.6719 30.6317,-40.6719\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"37.9419,-40.6719 30.9419,-43.822 34.4419,-40.672 30.9419,-40.672 30.9419,-40.672 30.9419,-40.672 34.4419,-40.672 30.9418,-37.522 37.9419,-40.6719 37.9419,-40.6719\"/>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M1.15491,-40.1464C2.79388,-40.1464 17.1543,-40.1464 30.6317,-40.1464\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"37.9419,-40.1464 30.9419,-43.2965 34.4419,-40.1465 30.9419,-40.1465 30.9419,-40.1465 30.9419,-40.1465 34.4419,-40.1465 30.9418,-36.9965 37.9419,-40.1464 37.9419,-40.1464\"/>\n",
         "</g>\n",
         "<!-- 3 -->\n",
         "<g id=\"node5\" class=\"node\"><title>3</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"489\" cy=\"-57.6719\" rx=\"18\" ry=\"18\"/>\n",
-        "<text text-anchor=\"middle\" x=\"489\" y=\"-53.9719\" font-family=\"Lato\" font-size=\"14.00\">3</text>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"489\" cy=\"-57.1464\" rx=\"18\" ry=\"18\"/>\n",
+        "<text text-anchor=\"middle\" x=\"489\" y=\"-53.4464\" font-family=\"Lato\" font-size=\"14.00\">3</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;3 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>0&#45;&gt;3</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M73.2717,-34.8167C94.6626,-27.4595 133.568,-15.2429 168,-10.6719 287.282,5.16321 323.177,5.30906 438,-30.6719 448.151,-33.8528 458.621,-39.1442 467.341,-44.2039\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"473.351,-47.8137 465.729,-46.91 470.351,-46.0117 467.35,-44.2096 467.35,-44.2096 467.35,-44.2096 470.351,-46.0117 468.972,-41.5092 473.351,-47.8137 473.351,-47.8137\"/>\n",
-        "<text text-anchor=\"start\" x=\"243\" y=\"-7.47194\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
+        "<g id=\"edge20\" class=\"edge\"><title>0&#45;&gt;3</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M73.2717,-34.2912C94.6626,-26.934 133.568,-14.7174 168,-10.1464 287.316,5.69317 322.99,4.34668 438,-31.1464 447.983,-34.2272 458.337,-39.2615 467.016,-44.0836\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"473.292,-47.6939 465.654,-46.934 470.258,-45.9487 467.224,-44.2035 467.224,-44.2035 467.224,-44.2035 470.258,-45.9487 468.795,-41.473 473.292,-47.6939 473.292,-47.6939\"/>\n",
+        "<text text-anchor=\"start\" x=\"243\" y=\"-6.9464\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 1 -->\n",
         "<g id=\"node7\" class=\"node\"><title>1</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"194\" cy=\"-40.6719\" rx=\"18\" ry=\"18\"/>\n",
-        "<text text-anchor=\"middle\" x=\"194\" y=\"-36.9719\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"194\" cy=\"-40.1464\" rx=\"18\" ry=\"18\"/>\n",
+        "<text text-anchor=\"middle\" x=\"194\" y=\"-36.4464\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;1 -->\n",
-        "<g id=\"edge2\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M74.2245,-40.6719C98.1366,-40.6719 141.511,-40.6719 168.704,-40.6719\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"175.915,-40.6719 168.915,-43.822 172.415,-40.672 168.915,-40.672 168.915,-40.672 168.915,-40.672 172.415,-40.672 168.915,-37.522 175.915,-40.6719 175.915,-40.6719\"/>\n",
-        "<text text-anchor=\"start\" x=\"92\" y=\"-44.4719\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
+        "<g id=\"edge18\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M74.2245,-40.1464C98.1366,-40.1464 141.511,-40.1464 168.704,-40.1464\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"175.915,-40.1464 168.915,-43.2965 172.415,-40.1465 168.915,-40.1465 168.915,-40.1465 168.915,-40.1465 172.415,-40.1465 168.915,-36.9965 175.915,-40.1464 175.915,-40.1464\"/>\n",
+        "<text text-anchor=\"start\" x=\"92\" y=\"-43.9464\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2 -->\n",
         "<g id=\"node8\" class=\"node\"><title>2</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"194\" cy=\"-161.672\" rx=\"18\" ry=\"18\"/>\n",
-        "<text text-anchor=\"middle\" x=\"194\" y=\"-157.972\" font-family=\"Lato\" font-size=\"14.00\">2</text>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"194\" cy=\"-161.146\" rx=\"18\" ry=\"18\"/>\n",
+        "<text text-anchor=\"middle\" x=\"194\" y=\"-157.446\" font-family=\"Lato\" font-size=\"14.00\">2</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;2 -->\n",
-        "<g id=\"edge3\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M70.0403,-52.2739C94.3484,-73.901 146.643,-120.428 174.557,-145.263\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"179.799,-149.927 172.476,-147.628 177.185,-147.601 174.57,-145.274 174.57,-145.274 174.57,-145.274 177.185,-147.601 176.663,-142.921 179.799,-149.927 179.799,-149.927\"/>\n",
-        "<text text-anchor=\"start\" x=\"94\" y=\"-133.472\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
+        "<g id=\"edge19\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M70.0403,-51.7484C94.3484,-73.3755 146.643,-119.902 174.557,-144.738\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"179.799,-149.402 172.476,-147.102 177.185,-147.075 174.57,-144.749 174.57,-144.749 174.57,-144.749 177.185,-147.075 176.663,-142.395 179.799,-149.402 179.799,-149.402\"/>\n",
+        "<text text-anchor=\"start\" x=\"94\" y=\"-132.946\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 6 -->\n",
         "<g id=\"node3\" class=\"node\"><title>6</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"776.87\" cy=\"-179.672\" rx=\"26.7407\" ry=\"26.7407\"/>\n",
-        "<text text-anchor=\"start\" x=\"772.37\" y=\"-183.472\" font-family=\"Lato\" font-size=\"14.00\">6</text>\n",
-        "<text text-anchor=\"start\" x=\"768.87\" y=\"-168.472\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"776.87\" cy=\"-179.146\" rx=\"26.7407\" ry=\"26.7407\"/>\n",
+        "<text text-anchor=\"start\" x=\"772.37\" y=\"-182.946\" font-family=\"Lato\" font-size=\"14.00\">6</text>\n",
+        "<text text-anchor=\"start\" x=\"768.87\" y=\"-167.946\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
         "</g>\n",
         "<!-- 6&#45;&gt;6 -->\n",
-        "<g id=\"edge20\" class=\"edge\"><title>6&#45;&gt;6</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M763.7,-203.218C762.074,-214.544 766.464,-224.542 776.87,-224.542 785,-224.542 789.458,-218.44 790.244,-210.369\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"790.04,-203.218 793.388,-210.126 790.14,-206.717 790.24,-210.216 790.24,-210.216 790.24,-210.216 790.14,-206.717 787.091,-210.305 790.04,-203.218 790.04,-203.218\"/>\n",
-        "<text text-anchor=\"start\" x=\"759.87\" y=\"-228.342\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b</text>\n",
+        "<g id=\"edge2\" class=\"edge\"><title>6&#45;&gt;6</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M763.7,-202.693C762.074,-214.019 766.464,-224.016 776.87,-224.016 785,-224.016 789.458,-217.914 790.244,-209.844\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"790.04,-202.693 793.388,-209.6 790.14,-206.191 790.24,-209.69 790.24,-209.69 790.24,-209.69 790.14,-206.191 787.091,-209.78 790.04,-202.693 790.04,-202.693\"/>\n",
+        "<text text-anchor=\"start\" x=\"759.87\" y=\"-227.816\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b</text>\n",
         "</g>\n",
         "<!-- 4 -->\n",
         "<g id=\"node4\" class=\"node\"><title>4</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"334\" cy=\"-74.6719\" rx=\"18\" ry=\"18\"/>\n",
-        "<text text-anchor=\"middle\" x=\"334\" y=\"-70.9719\" font-family=\"Lato\" font-size=\"14.00\">4</text>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"334\" cy=\"-74.1464\" rx=\"18\" ry=\"18\"/>\n",
+        "<text text-anchor=\"middle\" x=\"334\" y=\"-70.4464\" font-family=\"Lato\" font-size=\"14.00\">4</text>\n",
         "</g>\n",
         "<!-- 4&#45;&gt;4 -->\n",
-        "<g id=\"edge14\" class=\"edge\"><title>4&#45;&gt;4</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M322.57,-88.7137C318.296,-99.5845 322.105,-110.672 334,-110.672 343.293,-110.672 347.651,-103.905 347.075,-95.7604\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"345.43,-88.7137 350.088,-94.8145 346.225,-92.1221 347.021,-95.5305 347.021,-95.5305 347.021,-95.5305 346.225,-92.1221 343.953,-96.2465 345.43,-88.7137 345.43,-88.7137\"/>\n",
-        "<text text-anchor=\"start\" x=\"316\" y=\"-114.472\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
+        "<g id=\"edge3\" class=\"edge\"><title>4&#45;&gt;4</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M322.57,-88.1881C318.296,-99.059 322.105,-110.146 334,-110.146 343.293,-110.146 347.651,-103.379 347.075,-95.2349\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"345.43,-88.1881 350.088,-94.289 346.225,-91.5966 347.021,-95.005 347.021,-95.005 347.021,-95.005 346.225,-91.5966 343.953,-95.7209 345.43,-88.1881 345.43,-88.1881\"/>\n",
+        "<text text-anchor=\"start\" x=\"316\" y=\"-113.946\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 4&#45;&gt;3 -->\n",
-        "<g id=\"edge15\" class=\"edge\"><title>4&#45;&gt;3</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M349.425,-64.7106C355.998,-60.7565 364.072,-56.6776 372,-54.6719 403.017,-46.8255 440.193,-49.8689 463.949,-53.3105\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"471.166,-54.4286 463.766,-56.4697 467.707,-53.8927 464.249,-53.3568 464.249,-53.3568 464.249,-53.3568 467.707,-53.8927 464.731,-50.2439 471.166,-54.4286 471.166,-54.4286\"/>\n",
-        "<text text-anchor=\"start\" x=\"385\" y=\"-58.4719\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
+        "<g id=\"edge4\" class=\"edge\"><title>4&#45;&gt;3</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M350.386,-65.8545C356.864,-62.8021 364.605,-59.7101 372,-58.1464 403.115,-51.5671 439.98,-52.724 463.664,-54.5765\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"470.866,-55.1935 463.623,-57.7345 467.379,-54.8947 463.891,-54.5959 463.891,-54.5959 463.891,-54.5959 467.379,-54.8947 464.16,-51.4574 470.866,-55.1935 470.866,-55.1935\"/>\n",
+        "<text text-anchor=\"start\" x=\"385\" y=\"-61.9464\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;4 -->\n",
-        "<g id=\"edge11\" class=\"edge\"><title>3&#45;&gt;4</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M472.087,-64.1151C462.409,-67.6912 449.698,-71.7877 438,-73.6719 411.426,-77.9524 380.495,-77.5451 359.516,-76.4828\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"352.264,-76.0692 359.432,-73.3229 355.758,-76.2685 359.253,-76.4678 359.253,-76.4678 359.253,-76.4678 355.758,-76.2685 359.073,-79.6127 352.264,-76.0692 352.264,-76.0692\"/>\n",
-        "<text text-anchor=\"start\" x=\"372\" y=\"-81.4719\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
+        "<g id=\"edge5\" class=\"edge\"><title>3&#45;&gt;4</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M472.087,-63.5896C462.409,-67.1656 449.698,-71.2622 438,-73.1464 411.426,-77.4269 380.495,-77.0196 359.516,-75.9572\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"352.264,-75.5437 359.432,-72.7974 355.758,-75.743 359.253,-75.9423 359.253,-75.9423 359.253,-75.9423 355.758,-75.743 359.073,-79.0872 352.264,-75.5437 352.264,-75.5437\"/>\n",
+        "<text text-anchor=\"start\" x=\"372\" y=\"-80.9464\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;3 -->\n",
-        "<g id=\"edge12\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M476.289,-70.9645C470.857,-82.0689 475.094,-93.6719 489,-93.6719 500.082,-93.6719 505.023,-86.3039 503.825,-77.6915\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"501.711,-70.9645 506.814,-76.6985 502.76,-74.3036 503.809,-77.6427 503.809,-77.6427 503.809,-77.6427 502.76,-74.3036 500.804,-78.5868 501.711,-70.9645 501.711,-70.9645\"/>\n",
-        "<text text-anchor=\"start\" x=\"469\" y=\"-97.4719\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
+        "<g id=\"edge6\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M476.289,-70.4389C470.857,-81.5434 475.094,-93.1464 489,-93.1464 500.082,-93.1464 505.023,-85.7784 503.825,-77.166\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"501.711,-70.4389 506.814,-76.173 502.76,-73.778 503.809,-77.1171 503.809,-77.1171 503.809,-77.1171 502.76,-73.778 500.804,-78.0613 501.711,-70.4389 501.711,-70.4389\"/>\n",
+        "<text text-anchor=\"start\" x=\"469\" y=\"-96.9464\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 5 -->\n",
         "<g id=\"node6\" class=\"node\"><title>5</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"638\" cy=\"-108.672\" rx=\"18\" ry=\"18\"/>\n",
-        "<text text-anchor=\"middle\" x=\"638\" y=\"-104.972\" font-family=\"Lato\" font-size=\"14.00\">5</text>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"638\" cy=\"-108.146\" rx=\"18\" ry=\"18\"/>\n",
+        "<text text-anchor=\"middle\" x=\"638\" y=\"-104.446\" font-family=\"Lato\" font-size=\"14.00\">5</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;5 -->\n",
-        "<g id=\"edge13\" class=\"edge\"><title>3&#45;&gt;5</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M507.017,-55.6165C529.949,-53.645 571.419,-52.9475 602,-68.6719 610.463,-73.0234 617.787,-80.36 623.517,-87.5705\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"627.944,-93.5295 621.241,-89.7896 625.857,-90.7202 623.769,-87.9108 623.769,-87.9108 623.769,-87.9108 625.857,-90.7202 626.298,-86.0321 627.944,-93.5295 627.944,-93.5295\"/>\n",
-        "<text text-anchor=\"start\" x=\"540\" y=\"-72.4719\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
+        "<g id=\"edge7\" class=\"edge\"><title>3&#45;&gt;5</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M507.017,-55.0909C529.949,-53.1194 571.419,-52.422 602,-68.1464 610.463,-72.4978 617.787,-79.8344 623.517,-87.045\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"627.944,-93.004 621.241,-89.2641 625.857,-90.1946 623.769,-87.3853 623.769,-87.3853 623.769,-87.3853 625.857,-90.1946 626.298,-85.5065 627.944,-93.004 627.944,-93.004\"/>\n",
+        "<text text-anchor=\"start\" x=\"540\" y=\"-71.9464\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;6 -->\n",
-        "<g id=\"edge19\" class=\"edge\"><title>5&#45;&gt;6</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M654.435,-116.679C676.57,-128.161 717.767,-149.531 745.985,-164.17\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"752.505,-167.552 744.841,-167.125 749.398,-165.94 746.292,-164.328 746.292,-164.328 746.292,-164.328 749.398,-165.94 747.742,-161.532 752.505,-167.552 752.505,-167.552\"/>\n",
-        "<text text-anchor=\"start\" x=\"674\" y=\"-161.472\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; c</text>\n",
+        "<g id=\"edge11\" class=\"edge\"><title>5&#45;&gt;6</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M654.435,-116.153C676.57,-127.636 717.767,-149.006 745.985,-163.644\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"752.505,-167.026 744.841,-166.599 749.398,-165.414 746.292,-163.803 746.292,-163.803 746.292,-163.803 749.398,-165.414 747.742,-161.007 752.505,-167.026 752.505,-167.026\"/>\n",
+        "<text text-anchor=\"start\" x=\"674\" y=\"-160.946\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; c</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;4 -->\n",
-        "<g id=\"edge16\" class=\"edge\"><title>5&#45;&gt;4</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M621.258,-115.306C615.332,-117.471 608.463,-119.595 602,-120.672 574.819,-125.202 567.551,-121.164 540,-120.672 464.587,-119.326 441.741,-125.397 372,-96.6719 366.461,-94.3906 360.763,-91.381 355.549,-88.3229\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"349.252,-84.4745 356.867,-85.4368 352.238,-86.2996 355.225,-88.1247 355.225,-88.1247 355.225,-88.1247 352.238,-86.2996 353.582,-90.8125 349.252,-84.4745 349.252,-84.4745\"/>\n",
-        "<text text-anchor=\"start\" x=\"456\" y=\"-124.472\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
+        "<g id=\"edge8\" class=\"edge\"><title>5&#45;&gt;4</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M621.258,-114.78C615.332,-116.945 608.463,-119.069 602,-120.146 574.819,-124.677 567.551,-120.638 540,-120.146 464.587,-118.8 441.741,-124.871 372,-96.1464 366.461,-93.865 360.763,-90.8555 355.549,-87.7974\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"349.252,-83.949 356.867,-84.9113 352.238,-85.7741 355.225,-87.5991 355.225,-87.5991 355.225,-87.5991 352.238,-85.7741 353.582,-90.287 349.252,-83.949 349.252,-83.949\"/>\n",
+        "<text text-anchor=\"start\" x=\"456\" y=\"-123.946\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;3 -->\n",
-        "<g id=\"edge17\" class=\"edge\"><title>5&#45;&gt;3</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M620.166,-105.546C600.531,-101.625 567.282,-94.1247 540,-83.6719 530.244,-79.9341 519.928,-74.7909 511.216,-70.065\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"504.902,-66.5627 512.551,-67.2039 507.963,-68.2605 511.023,-69.9584 511.023,-69.9584 511.023,-69.9584 507.963,-68.2605 509.495,-72.713 504.902,-66.5627 504.902,-66.5627\"/>\n",
-        "<text text-anchor=\"start\" x=\"551\" y=\"-105.472\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
+        "<g id=\"edge9\" class=\"edge\"><title>5&#45;&gt;3</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M620.166,-105.02C600.531,-101.099 567.282,-93.5991 540,-83.1464 530.244,-79.4086 519.928,-74.2654 511.216,-69.5395\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"504.902,-66.0371 512.551,-66.6783 507.963,-67.735 511.023,-69.4329 511.023,-69.4329 511.023,-69.4329 507.963,-67.735 509.495,-72.1874 504.902,-66.0371 504.902,-66.0371\"/>\n",
+        "<text text-anchor=\"start\" x=\"551\" y=\"-104.946\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;5 -->\n",
-        "<g id=\"edge18\" class=\"edge\"><title>5&#45;&gt;5</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M627.292,-123.464C623.806,-134.088 627.375,-144.672 638,-144.672 646.135,-144.672 650.134,-138.468 649.997,-130.792\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"648.708,-123.464 653.023,-129.812 649.314,-126.911 649.92,-130.358 649.92,-130.358 649.92,-130.358 649.314,-126.911 646.818,-130.903 648.708,-123.464 648.708,-123.464\"/>\n",
-        "<text text-anchor=\"start\" x=\"607\" y=\"-148.472\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
+        "<g id=\"edge10\" class=\"edge\"><title>5&#45;&gt;5</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M627.292,-122.938C623.806,-133.563 627.375,-144.146 638,-144.146 646.135,-144.146 650.134,-137.943 649.997,-130.266\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"648.708,-122.938 653.023,-129.287 649.314,-126.385 649.92,-129.832 649.92,-129.832 649.92,-129.832 649.314,-126.385 646.818,-130.378 648.708,-122.938 648.708,-122.938\"/>\n",
+        "<text text-anchor=\"start\" x=\"607\" y=\"-147.946\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;4 -->\n",
-        "<g id=\"edge5\" class=\"edge\"><title>1&#45;&gt;4</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M211.646,-44.7731C235.994,-50.772 281.442,-61.9694 309.281,-68.8282\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"316.295,-70.5562 308.745,-71.9401 312.897,-69.7189 309.498,-68.8816 309.498,-68.8816 309.498,-68.8816 312.897,-69.7189 310.252,-65.823 316.295,-70.5562 316.295,-70.5562\"/>\n",
-        "<text text-anchor=\"start\" x=\"245\" y=\"-69.4719\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
+        "<g id=\"edge12\" class=\"edge\"><title>1&#45;&gt;4</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M211.646,-44.2476C235.994,-50.2465 281.442,-61.4438 309.281,-68.3027\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"316.295,-70.0307 308.745,-71.4146 312.897,-69.1933 309.498,-68.356 309.498,-68.356 309.498,-68.356 312.897,-69.1933 310.252,-65.2975 316.295,-70.0307 316.295,-70.0307\"/>\n",
+        "<text text-anchor=\"start\" x=\"245\" y=\"-68.9464\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;3 -->\n",
-        "<g id=\"edge6\" class=\"edge\"><title>1&#45;&gt;3</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M212.21,-39.0735C234.346,-37.1049 273.997,-33.8741 308,-32.6719 328.432,-31.9496 333.625,-30.9857 354,-32.6719 391.719,-35.7937 400.839,-39.4924 438,-46.6719 446.639,-48.3411 456.074,-50.3643 464.398,-52.2182\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"471.378,-53.7905 463.857,-55.3252 467.963,-53.0213 464.549,-52.2522 464.549,-52.2522 464.549,-52.2522 467.963,-53.0213 465.241,-49.1792 471.378,-53.7905 471.378,-53.7905\"/>\n",
-        "<text text-anchor=\"start\" x=\"314\" y=\"-36.4719\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
+        "<g id=\"edge13\" class=\"edge\"><title>1&#45;&gt;3</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M212.21,-38.548C234.346,-36.5794 273.997,-33.3485 308,-32.1464 328.432,-31.4241 333.642,-30.2636 354,-32.1464 392.987,-35.7521 437.549,-45.1389 464.196,-51.3286\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"471.218,-52.9821 463.682,-54.4436 467.811,-52.1798 464.404,-51.3774 464.404,-51.3774 464.404,-51.3774 467.811,-52.1798 465.126,-48.3113 471.218,-52.9821 471.218,-52.9821\"/>\n",
+        "<text text-anchor=\"start\" x=\"314\" y=\"-35.9464\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;6 -->\n",
-        "<g id=\"edge10\" class=\"edge\"><title>2&#45;&gt;6</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M205.963,-175.189C227.483,-200.087 277.978,-250.672 333,-250.672 333,-250.672 333,-250.672 639,-250.672 681.805,-250.672 724.538,-222.97 750.587,-202.173\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"756.204,-197.588 752.773,-204.455 753.492,-199.802 750.781,-202.015 750.781,-202.015 750.781,-202.015 753.492,-199.802 748.789,-199.575 756.204,-197.588 756.204,-197.588\"/>\n",
-        "<text text-anchor=\"start\" x=\"460\" y=\"-254.472\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; c</text>\n",
+        "<g id=\"edge17\" class=\"edge\"><title>2&#45;&gt;6</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M205.963,-174.664C227.483,-199.561 277.978,-250.146 333,-250.146 333,-250.146 333,-250.146 639,-250.146 681.805,-250.146 724.538,-222.445 750.587,-201.648\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"756.204,-197.063 752.773,-203.93 753.492,-199.276 750.781,-201.489 750.781,-201.489 750.781,-201.489 753.492,-199.276 748.789,-199.049 756.204,-197.063 756.204,-197.063\"/>\n",
+        "<text text-anchor=\"start\" x=\"460\" y=\"-253.946\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;4 -->\n",
-        "<g id=\"edge7\" class=\"edge\"><title>2&#45;&gt;4</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M207.858,-150.076C214.292,-144.522 222.327,-137.948 230,-132.672 256.703,-114.31 289.653,-96.5325 310.984,-85.6048\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"317.478,-82.3055 312.664,-88.2844 314.358,-83.8908 311.237,-85.476 311.237,-85.476 311.237,-85.476 314.358,-83.8908 309.811,-82.6676 317.478,-82.3055 317.478,-82.3055\"/>\n",
-        "<text text-anchor=\"start\" x=\"230\" y=\"-136.472\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
+        "<g id=\"edge14\" class=\"edge\"><title>2&#45;&gt;4</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M207.858,-149.55C214.292,-143.996 222.327,-137.422 230,-132.146 256.703,-113.785 289.653,-96.007 310.984,-85.0793\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"317.478,-81.78 312.664,-87.7589 314.358,-83.3652 311.237,-84.9505 311.237,-84.9505 311.237,-84.9505 314.358,-83.3652 309.811,-82.1421 317.478,-81.78 317.478,-81.78\"/>\n",
+        "<text text-anchor=\"start\" x=\"230\" y=\"-135.946\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;3 -->\n",
-        "<g id=\"edge8\" class=\"edge\"><title>2&#45;&gt;3</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M212.225,-159.725C232.384,-157.344 266.736,-152.97 296,-147.672 361.985,-135.725 380.609,-131.357 438,-96.6719 449.079,-89.9758 460.53,-81.2023 469.674,-73.6728\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"475.045,-69.1751 471.7,-76.0844 472.361,-71.4222 469.678,-73.6694 469.678,-73.6694 469.678,-73.6694 472.361,-71.4222 467.655,-71.2544 475.045,-69.1751 475.045,-69.1751\"/>\n",
-        "<text text-anchor=\"start\" x=\"314\" y=\"-149.472\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
+        "<g id=\"edge15\" class=\"edge\"><title>2&#45;&gt;3</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M212.225,-159.199C232.384,-156.818 266.736,-152.445 296,-147.146 361.985,-135.199 380.609,-130.832 438,-96.1464 449.079,-89.4502 460.53,-80.6767 469.674,-73.1473\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"475.045,-68.6495 471.7,-75.5589 472.361,-70.8967 469.678,-73.1438 469.678,-73.1438 469.678,-73.1438 472.361,-70.8967 467.655,-70.7288 475.045,-68.6495 475.045,-68.6495\"/>\n",
+        "<text text-anchor=\"start\" x=\"314\" y=\"-148.946\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;5 -->\n",
-        "<g id=\"edge9\" class=\"edge\"><title>2&#45;&gt;5</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M212.038,-164.6C217.731,-165.447 224.122,-166.254 230,-166.672 259.26,-168.751 266.671,-167.177 296,-166.672 321.789,-166.227 328.314,-167.018 354,-164.672 429.176,-157.805 447.34,-150.827 522,-139.672 557.559,-134.359 567.907,-139.088 602,-127.672 606.757,-126.079 611.63,-123.862 616.17,-121.504\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"622.532,-118.003 617.918,-124.138 619.465,-119.691 616.399,-121.378 616.399,-121.378 616.399,-121.378 619.465,-119.691 614.88,-118.618 622.532,-118.003 622.532,-118.003\"/>\n",
-        "<text text-anchor=\"start\" x=\"374\" y=\"-167.472\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
+        "<g id=\"edge16\" class=\"edge\"><title>2&#45;&gt;5</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M212.038,-164.075C217.731,-164.921 224.122,-165.729 230,-166.146 259.26,-168.226 266.671,-166.652 296,-166.146 321.789,-165.702 328.314,-166.493 354,-164.146 429.176,-157.279 447.34,-150.301 522,-139.146 557.559,-133.834 567.907,-138.562 602,-127.146 606.757,-125.553 611.63,-123.337 616.17,-120.978\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"622.532,-117.477 617.918,-123.612 619.465,-119.165 616.399,-120.852 616.399,-120.852 616.399,-120.852 619.465,-119.165 614.88,-118.093 622.532,-117.477 622.532,-117.477\"/>\n",
+        "<text text-anchor=\"start\" x=\"374\" y=\"-166.946\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "</g>\n",
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f734006f060> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd270264390> >"
        ]
       },
       {
@@ -1961,173 +1960,173 @@
         " -->\n",
         "<!-- Title: G Pages: 1 -->\n",
         "<svg width=\"713pt\" height=\"245pt\"\n",
-        " viewBox=\"0.00 0.00 713.36 244.72\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
-        "<g id=\"graph0\" class=\"graph\" transform=\"scale(1 1) rotate(0) translate(4 240.724)\">\n",
+        " viewBox=\"0.00 0.00 713.36 244.63\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
+        "<g id=\"graph0\" class=\"graph\" transform=\"scale(1 1) rotate(0) translate(4 240.629)\">\n",
         "<title>G</title>\n",
-        "<polygon fill=\"white\" stroke=\"none\" points=\"-4,4 -4,-240.724 709.362,-240.724 709.362,4 -4,4\"/>\n",
-        "<text text-anchor=\"start\" x=\"332.181\" y=\"-222.524\" font-family=\"Lato\" font-size=\"14.00\">strong</text>\n",
-        "<text text-anchor=\"start\" x=\"236.181\" y=\"-208.524\" font-family=\"Lato\" font-size=\"14.00\">(Fin(</text>\n",
-        "<text text-anchor=\"start\" x=\"264.181\" y=\"-208.524\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
-        "<text text-anchor=\"start\" x=\"280.181\" y=\"-208.524\" font-family=\"Lato\" font-size=\"14.00\">) &amp; Inf(</text>\n",
-        "<text text-anchor=\"start\" x=\"323.181\" y=\"-208.524\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#f17cb0\">\u2776</text>\n",
-        "<text text-anchor=\"start\" x=\"339.181\" y=\"-208.524\" font-family=\"Lato\" font-size=\"14.00\">)) | (Fin(</text>\n",
-        "<text text-anchor=\"start\" x=\"386.181\" y=\"-208.524\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
-        "<text text-anchor=\"start\" x=\"402.181\" y=\"-208.524\" font-family=\"Lato\" font-size=\"14.00\">) &amp; Inf(</text>\n",
-        "<text text-anchor=\"start\" x=\"445.181\" y=\"-208.524\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#b276b2\">\u2778</text>\n",
-        "<text text-anchor=\"start\" x=\"461.181\" y=\"-208.524\" font-family=\"Lato\" font-size=\"14.00\">))</text>\n",
+        "<polygon fill=\"white\" stroke=\"none\" points=\"-4,4 -4,-240.629 709.362,-240.629 709.362,4 -4,4\"/>\n",
+        "<text text-anchor=\"start\" x=\"332.181\" y=\"-222.429\" font-family=\"Lato\" font-size=\"14.00\">strong</text>\n",
+        "<text text-anchor=\"start\" x=\"236.181\" y=\"-208.429\" font-family=\"Lato\" font-size=\"14.00\">(Fin(</text>\n",
+        "<text text-anchor=\"start\" x=\"264.181\" y=\"-208.429\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
+        "<text text-anchor=\"start\" x=\"280.181\" y=\"-208.429\" font-family=\"Lato\" font-size=\"14.00\">) &amp; Inf(</text>\n",
+        "<text text-anchor=\"start\" x=\"323.181\" y=\"-208.429\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#f17cb0\">\u2776</text>\n",
+        "<text text-anchor=\"start\" x=\"339.181\" y=\"-208.429\" font-family=\"Lato\" font-size=\"14.00\">)) | (Fin(</text>\n",
+        "<text text-anchor=\"start\" x=\"386.181\" y=\"-208.429\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
+        "<text text-anchor=\"start\" x=\"402.181\" y=\"-208.429\" font-family=\"Lato\" font-size=\"14.00\">) &amp; Inf(</text>\n",
+        "<text text-anchor=\"start\" x=\"445.181\" y=\"-208.429\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#b276b2\">\u2778</text>\n",
+        "<text text-anchor=\"start\" x=\"461.181\" y=\"-208.429\" font-family=\"Lato\" font-size=\"14.00\">))</text>\n",
         "<g id=\"clust1\" class=\"cluster\"><title>cluster_0</title>\n",
-        "<polygon fill=\"none\" stroke=\"green\" points=\"306,-24.7243 306,-192.724 697.362,-192.724 697.362,-24.7243 306,-24.7243\"/>\n",
+        "<polygon fill=\"none\" stroke=\"green\" points=\"306,-24.6285 306,-192.629 697.362,-192.629 697.362,-24.6285 306,-24.6285\"/>\n",
         "</g>\n",
         "<g id=\"clust2\" class=\"cluster\"><title>cluster_1</title>\n",
-        "<polygon fill=\"none\" stroke=\"black\" points=\"168,-113.724 168,-165.724 220,-165.724 220,-113.724 168,-113.724\"/>\n",
+        "<polygon fill=\"none\" stroke=\"black\" points=\"168,-113.629 168,-165.629 220,-165.629 220,-113.629 168,-113.629\"/>\n",
         "</g>\n",
         "<g id=\"clust3\" class=\"cluster\"><title>cluster_2</title>\n",
-        "<polygon fill=\"none\" stroke=\"black\" points=\"168,-32.7243 168,-84.7243 220,-84.7243 220,-32.7243 168,-32.7243\"/>\n",
+        "<polygon fill=\"none\" stroke=\"black\" points=\"168,-32.6285 168,-84.6285 220,-84.6285 220,-32.6285 168,-32.6285\"/>\n",
         "</g>\n",
         "<g id=\"clust4\" class=\"cluster\"><title>cluster_3</title>\n",
-        "<polygon fill=\"none\" stroke=\"black\" points=\"30,-113.724 30,-165.724 82,-165.724 82,-113.724 30,-113.724\"/>\n",
+        "<polygon fill=\"none\" stroke=\"black\" points=\"30,-113.629 30,-165.629 82,-165.629 82,-113.629 30,-113.629\"/>\n",
         "</g>\n",
         "<!-- I -->\n",
         "<!-- 0 -->\n",
         "<g id=\"node2\" class=\"node\"><title>0</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"56\" cy=\"-139.724\" rx=\"18\" ry=\"18\"/>\n",
-        "<text text-anchor=\"middle\" x=\"56\" y=\"-136.024\" font-family=\"Lato\" font-size=\"14.00\">0</text>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"56\" cy=\"-139.629\" rx=\"18\" ry=\"18\"/>\n",
+        "<text text-anchor=\"middle\" x=\"56\" y=\"-135.929\" font-family=\"Lato\" font-size=\"14.00\">0</text>\n",
         "</g>\n",
         "<!-- I&#45;&gt;0 -->\n",
         "<g id=\"edge1\" class=\"edge\"><title>I&#45;&gt;0</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M1.15491,-139.724C2.79388,-139.724 17.1543,-139.724 30.6317,-139.724\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"37.9419,-139.724 30.9419,-142.874 34.4419,-139.724 30.9419,-139.724 30.9419,-139.724 30.9419,-139.724 34.4419,-139.724 30.9418,-136.574 37.9419,-139.724 37.9419,-139.724\"/>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M1.15491,-139.629C2.79388,-139.629 17.1543,-139.629 30.6317,-139.629\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"37.9419,-139.629 30.9419,-142.779 34.4419,-139.629 30.9419,-139.629 30.9419,-139.629 30.9419,-139.629 34.4419,-139.629 30.9418,-136.479 37.9419,-139.629 37.9419,-139.629\"/>\n",
         "</g>\n",
         "<!-- 3 -->\n",
         "<g id=\"node4\" class=\"node\"><title>3</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"503.681\" cy=\"-117.724\" rx=\"33.8824\" ry=\"33.8824\"/>\n",
-        "<text text-anchor=\"start\" x=\"499.181\" y=\"-121.524\" font-family=\"Lato\" font-size=\"14.00\">3</text>\n",
-        "<text text-anchor=\"start\" x=\"487.681\" y=\"-107.524\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#f17cb0\">\u2776</text>\n",
-        "<text text-anchor=\"start\" x=\"503.681\" y=\"-107.524\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"503.681\" cy=\"-117.629\" rx=\"33.8824\" ry=\"33.8824\"/>\n",
+        "<text text-anchor=\"start\" x=\"499.181\" y=\"-121.429\" font-family=\"Lato\" font-size=\"14.00\">3</text>\n",
+        "<text text-anchor=\"start\" x=\"487.681\" y=\"-107.429\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#f17cb0\">\u2776</text>\n",
+        "<text text-anchor=\"start\" x=\"503.681\" y=\"-107.429\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;3 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>0&#45;&gt;3</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M71.4624,-149.074C77.5767,-152.622 84.9132,-156.372 92,-158.724 124.391,-169.478 133.977,-167.027 168,-169.724 256.5,-176.741 279.511,-181.578 367.74,-171.724 405.78,-167.476 416.67,-168.06 451.74,-152.724 458.155,-149.919 464.609,-146.27 470.666,-142.39\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"476.574,-138.455 472.494,-144.957 473.661,-140.395 470.748,-142.335 470.748,-142.335 470.748,-142.335 473.661,-140.395 469.002,-139.714 476.574,-138.455 476.574,-138.455\"/>\n",
-        "<text text-anchor=\"start\" x=\"243\" y=\"-180.524\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
+        "<g id=\"edge17\" class=\"edge\"><title>0&#45;&gt;3</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M71.4624,-148.978C77.5767,-152.527 84.9132,-156.276 92,-158.629 124.391,-169.382 133.977,-166.931 168,-169.629 256.5,-176.645 279.511,-181.482 367.74,-171.629 405.78,-167.38 416.67,-167.964 451.74,-152.629 458.155,-149.823 464.609,-146.174 470.666,-142.294\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"476.574,-138.359 472.494,-144.861 473.661,-140.299 470.748,-142.24 470.748,-142.24 470.748,-142.24 473.661,-140.299 469.002,-139.618 476.574,-138.359 476.574,-138.359\"/>\n",
+        "<text text-anchor=\"start\" x=\"243\" y=\"-180.429\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 1 -->\n",
         "<g id=\"node6\" class=\"node\"><title>1</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"194\" cy=\"-139.724\" rx=\"18\" ry=\"18\"/>\n",
-        "<text text-anchor=\"middle\" x=\"194\" y=\"-136.024\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"194\" cy=\"-139.629\" rx=\"18\" ry=\"18\"/>\n",
+        "<text text-anchor=\"middle\" x=\"194\" y=\"-135.929\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;1 -->\n",
-        "<g id=\"edge2\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M74.2245,-139.724C98.1366,-139.724 141.511,-139.724 168.704,-139.724\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"175.915,-139.724 168.915,-142.874 172.415,-139.724 168.915,-139.724 168.915,-139.724 168.915,-139.724 172.415,-139.724 168.915,-136.574 175.915,-139.724 175.915,-139.724\"/>\n",
-        "<text text-anchor=\"start\" x=\"92\" y=\"-143.524\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
+        "<g id=\"edge15\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M74.2245,-139.629C98.1366,-139.629 141.511,-139.629 168.704,-139.629\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"175.915,-139.629 168.915,-142.779 172.415,-139.629 168.915,-139.629 168.915,-139.629 168.915,-139.629 172.415,-139.629 168.915,-136.479 175.915,-139.629 175.915,-139.629\"/>\n",
+        "<text text-anchor=\"start\" x=\"92\" y=\"-143.429\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2 -->\n",
         "<g id=\"node7\" class=\"node\"><title>2</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"194\" cy=\"-58.7243\" rx=\"18\" ry=\"18\"/>\n",
-        "<text text-anchor=\"middle\" x=\"194\" y=\"-55.0243\" font-family=\"Lato\" font-size=\"14.00\">2</text>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"194\" cy=\"-58.6285\" rx=\"18\" ry=\"18\"/>\n",
+        "<text text-anchor=\"middle\" x=\"194\" y=\"-54.9285\" font-family=\"Lato\" font-size=\"14.00\">2</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;2 -->\n",
-        "<g id=\"edge3\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M71.8133,-130.902C96.0324,-116.477 144.183,-87.7991 171.944,-71.2649\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"178.205,-67.536 173.803,-73.8244 175.198,-69.327 172.191,-71.118 172.191,-71.118 172.191,-71.118 175.198,-69.327 170.579,-68.4116 178.205,-67.536 178.205,-67.536\"/>\n",
-        "<text text-anchor=\"start\" x=\"94\" y=\"-122.524\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
+        "<g id=\"edge16\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M71.8133,-130.806C96.0324,-116.381 144.183,-87.7033 171.944,-71.1691\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"178.205,-67.4402 173.803,-73.7286 175.198,-69.2312 172.191,-71.0222 172.191,-71.0222 172.191,-71.0222 175.198,-69.2312 170.579,-68.3159 178.205,-67.4402 178.205,-67.4402\"/>\n",
+        "<text text-anchor=\"start\" x=\"94\" y=\"-122.429\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 4 -->\n",
         "<g id=\"node3\" class=\"node\"><title>4</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"340.87\" cy=\"-79.7243\" rx=\"26.7407\" ry=\"26.7407\"/>\n",
-        "<text text-anchor=\"start\" x=\"336.37\" y=\"-83.5243\" font-family=\"Lato\" font-size=\"14.00\">4</text>\n",
-        "<text text-anchor=\"start\" x=\"332.87\" y=\"-68.5243\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"340.87\" cy=\"-79.6285\" rx=\"26.7407\" ry=\"26.7407\"/>\n",
+        "<text text-anchor=\"start\" x=\"336.37\" y=\"-83.4285\" font-family=\"Lato\" font-size=\"14.00\">4</text>\n",
+        "<text text-anchor=\"start\" x=\"332.87\" y=\"-68.4285\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 4&#45;&gt;4 -->\n",
-        "<g id=\"edge13\" class=\"edge\"><title>4&#45;&gt;4</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M327.041,-102.811C325.128,-114.324 329.737,-124.594 340.87,-124.594 349.568,-124.594 354.284,-118.326 355.018,-110.094\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"354.699,-102.811 358.153,-109.666 354.852,-106.307 355.006,-109.804 355.006,-109.804 355.006,-109.804 354.852,-106.307 351.859,-109.942 354.699,-102.811 354.699,-102.811\"/>\n",
-        "<text text-anchor=\"start\" x=\"322.87\" y=\"-128.394\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
+        "<g id=\"edge2\" class=\"edge\"><title>4&#45;&gt;4</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M327.041,-102.715C325.128,-114.229 329.737,-124.499 340.87,-124.499 349.568,-124.499 354.284,-118.23 355.018,-109.998\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"354.699,-102.715 358.153,-109.57 354.852,-106.212 355.006,-109.708 355.006,-109.708 355.006,-109.708 354.852,-106.212 351.859,-109.846 354.699,-102.715 354.699,-102.715\"/>\n",
+        "<text text-anchor=\"start\" x=\"322.87\" y=\"-128.299\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 4&#45;&gt;3 -->\n",
-        "<g id=\"edge14\" class=\"edge\"><title>4&#45;&gt;3</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M366.236,-89.4128C372.524,-91.6911 379.329,-93.965 385.74,-95.7243 410.997,-102.656 439.918,-108.117 462.68,-111.865\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"469.841,-113.021 462.429,-115.015 466.386,-112.463 462.931,-111.905 462.931,-111.905 462.931,-111.905 466.386,-112.463 463.433,-108.796 469.841,-113.021 469.841,-113.021\"/>\n",
-        "<text text-anchor=\"start\" x=\"398.74\" y=\"-114.524\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
+        "<g id=\"edge3\" class=\"edge\"><title>4&#45;&gt;3</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M366.236,-89.3171C372.524,-91.5953 379.329,-93.8692 385.74,-95.6285 410.997,-102.56 439.918,-108.021 462.68,-111.769\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"469.841,-112.926 462.429,-114.919 466.386,-112.368 462.931,-111.81 462.931,-111.81 462.931,-111.81 466.386,-112.368 463.433,-108.7 469.841,-112.926 469.841,-112.926\"/>\n",
+        "<text text-anchor=\"start\" x=\"398.74\" y=\"-114.429\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;4 -->\n",
-        "<g id=\"edge10\" class=\"edge\"><title>3&#45;&gt;4</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M477.986,-95.1155C470.152,-89.2941 461.082,-83.8061 451.74,-80.7243 426.73,-72.4741 396.742,-72.8316 374.418,-74.9121\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"367.455,-75.6394 374.09,-71.7791 370.936,-75.2757 374.417,-74.912 374.417,-74.912 374.417,-74.912 370.936,-75.2757 374.745,-78.045 367.455,-75.6394 367.455,-75.6394\"/>\n",
-        "<text text-anchor=\"start\" x=\"385.74\" y=\"-84.5243\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
+        "<g id=\"edge4\" class=\"edge\"><title>3&#45;&gt;4</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M479.648,-93.6302C471.549,-86.7838 461.912,-80.2134 451.74,-76.6285 426.894,-67.8718 396.892,-69.4324 374.522,-72.729\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"367.543,-73.8495 373.955,-69.6296 370.999,-73.2946 374.455,-72.7398 374.455,-72.7398 374.455,-72.7398 370.999,-73.2946 374.954,-75.8499 367.543,-73.8495 367.543,-73.8495\"/>\n",
+        "<text text-anchor=\"start\" x=\"385.74\" y=\"-80.4285\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;3 -->\n",
-        "<g id=\"edge11\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M488.366,-148.135C487.686,-159.893 492.791,-169.665 503.681,-169.665 512.19,-169.665 517.167,-163.701 518.612,-155.484\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"518.996,-148.135 521.777,-155.29 518.814,-151.63 518.631,-155.125 518.631,-155.125 518.631,-155.125 518.814,-151.63 515.485,-154.961 518.996,-148.135 518.996,-148.135\"/>\n",
-        "<text text-anchor=\"start\" x=\"483.681\" y=\"-173.465\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
+        "<g id=\"edge5\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M488.366,-148.039C487.686,-159.797 492.791,-169.57 503.681,-169.57 512.19,-169.57 517.167,-163.605 518.612,-155.389\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"518.996,-148.039 521.777,-155.194 518.814,-151.534 518.631,-155.029 518.631,-155.029 518.631,-155.029 518.814,-151.534 515.485,-154.865 518.996,-148.039 518.996,-148.039\"/>\n",
+        "<text text-anchor=\"start\" x=\"483.681\" y=\"-173.37\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 5 -->\n",
         "<g id=\"node5\" class=\"node\"><title>5</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"662.492\" cy=\"-67.7243\" rx=\"26.7407\" ry=\"26.7407\"/>\n",
-        "<text text-anchor=\"start\" x=\"657.992\" y=\"-71.5243\" font-family=\"Lato\" font-size=\"14.00\">5</text>\n",
-        "<text text-anchor=\"start\" x=\"654.492\" y=\"-56.5243\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#b276b2\">\u2778</text>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"662.492\" cy=\"-67.6285\" rx=\"26.7407\" ry=\"26.7407\"/>\n",
+        "<text text-anchor=\"start\" x=\"657.992\" y=\"-71.4285\" font-family=\"Lato\" font-size=\"14.00\">5</text>\n",
+        "<text text-anchor=\"start\" x=\"654.492\" y=\"-56.4285\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#b276b2\">\u2778</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;5 -->\n",
-        "<g id=\"edge12\" class=\"edge\"><title>3&#45;&gt;5</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M528.89,-94.8763C536.843,-88.6123 546.1,-82.5106 555.622,-78.7243 578.663,-69.5625 606.635,-66.9829 628.04,-66.6024\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"635.318,-66.5524 628.34,-69.7505 631.818,-66.5765 628.319,-66.6006 628.319,-66.6006 628.319,-66.6006 631.818,-66.5765 628.297,-63.4507 635.318,-66.5524 635.318,-66.5524\"/>\n",
-        "<text text-anchor=\"start\" x=\"555.622\" y=\"-82.5243\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
+        "<g id=\"edge6\" class=\"edge\"><title>3&#45;&gt;5</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M528.89,-94.7805C536.843,-88.5165 546.1,-82.4148 555.622,-78.6285 578.663,-69.4667 606.635,-66.8871 628.04,-66.5066\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"635.318,-66.4566 628.34,-69.6548 631.818,-66.4807 628.319,-66.5048 628.319,-66.5048 628.319,-66.5048 631.818,-66.4807 628.297,-63.3549 635.318,-66.4566 635.318,-66.4566\"/>\n",
+        "<text text-anchor=\"start\" x=\"555.622\" y=\"-82.4285\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;4 -->\n",
-        "<g id=\"edge15\" class=\"edge\"><title>5&#45;&gt;4</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M635.525,-65.1793C629.642,-64.6521 623.42,-64.1334 617.622,-63.7243 514.785,-56.4681 487.324,-52.1503 385.74,-69.7243 381.988,-70.3734 378.073,-71.138 374.195,-71.9505\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"367.296,-73.4501 373.467,-68.8851 370.716,-72.7066 374.136,-71.9632 374.136,-71.9632 374.136,-71.9632 370.716,-72.7066 374.805,-75.0414 367.296,-73.4501 367.296,-73.4501\"/>\n",
-        "<text text-anchor=\"start\" x=\"470.681\" y=\"-62.5243\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
+        "<g id=\"edge7\" class=\"edge\"><title>5&#45;&gt;4</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M635.729,-64.3351C586.593,-58.7566 476.315,-49.6209 385.74,-66.6285 381.739,-67.3798 377.582,-68.3513 373.491,-69.4248\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"366.709,-71.3066 372.612,-66.3996 370.081,-70.3708 373.454,-69.4349 373.454,-69.4349 373.454,-69.4349 370.081,-70.3708 374.296,-72.4703 366.709,-71.3066 366.709,-71.3066\"/>\n",
+        "<text text-anchor=\"start\" x=\"470.681\" y=\"-61.4285\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;3 -->\n",
-        "<g id=\"edge16\" class=\"edge\"><title>5&#45;&gt;3</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M639.889,-82.4171C633.01,-86.5712 625.21,-90.7622 617.622,-93.7243 594.201,-102.868 566.619,-108.813 544.576,-112.498\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"537.626,-113.617 544.036,-109.395 541.081,-113.061 544.537,-112.505 544.537,-112.505 544.537,-112.505 541.081,-113.061 545.037,-115.615 537.626,-113.617 537.626,-113.617\"/>\n",
-        "<text text-anchor=\"start\" x=\"566.622\" y=\"-114.524\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
+        "<g id=\"edge8\" class=\"edge\"><title>5&#45;&gt;3</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M639.889,-82.3213C633.01,-86.4754 625.21,-90.6664 617.622,-93.6285 594.201,-102.772 566.619,-108.717 544.576,-112.403\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"537.626,-113.521 544.036,-109.299 541.081,-112.965 544.537,-112.409 544.537,-112.409 544.537,-112.409 541.081,-112.965 545.037,-115.519 537.626,-113.521 537.626,-113.521\"/>\n",
+        "<text text-anchor=\"start\" x=\"566.622\" y=\"-114.429\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;5 -->\n",
-        "<g id=\"edge17\" class=\"edge\"><title>5&#45;&gt;5</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M648.956,-91.2707C647.285,-102.596 651.797,-112.594 662.492,-112.594 670.848,-112.594 675.43,-106.492 676.238,-98.4218\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"676.029,-91.2707 679.382,-98.1756 676.131,-94.7692 676.233,-98.2677 676.233,-98.2677 676.233,-98.2677 676.131,-94.7692 673.085,-98.3598 676.029,-91.2707 676.029,-91.2707\"/>\n",
-        "<text text-anchor=\"start\" x=\"631.492\" y=\"-116.394\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
+        "<g id=\"edge9\" class=\"edge\"><title>5&#45;&gt;5</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M648.956,-91.1749C647.285,-102.501 651.797,-112.499 662.492,-112.499 670.848,-112.499 675.43,-106.396 676.238,-98.3261\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"676.029,-91.1749 679.382,-98.0798 676.131,-94.6734 676.233,-98.1719 676.233,-98.1719 676.233,-98.1719 676.131,-94.6734 673.085,-98.264 676.029,-91.1749 676.029,-91.1749\"/>\n",
+        "<text text-anchor=\"start\" x=\"631.492\" y=\"-116.299\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;4 -->\n",
-        "<g id=\"edge5\" class=\"edge\"><title>1&#45;&gt;4</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M210.779,-133.189C234.301,-123.447 279.012,-104.929 309.134,-92.4539\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"315.703,-89.7334 310.441,-95.3223 312.469,-91.0727 309.236,-92.412 309.236,-92.412 309.236,-92.412 312.469,-91.0727 308.03,-89.5017 315.703,-89.7334 315.703,-89.7334\"/>\n",
-        "<text text-anchor=\"start\" x=\"245\" y=\"-129.524\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
+        "<g id=\"edge10\" class=\"edge\"><title>1&#45;&gt;4</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M210.779,-133.093C234.301,-123.352 279.012,-104.834 309.134,-92.3581\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"315.703,-89.6376 310.441,-95.2265 312.469,-90.9769 309.236,-92.3162 309.236,-92.3162 309.236,-92.3162 312.469,-90.9769 308.03,-89.4059 315.703,-89.6376 315.703,-89.6376\"/>\n",
+        "<text text-anchor=\"start\" x=\"245\" y=\"-129.429\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;3 -->\n",
-        "<g id=\"edge6\" class=\"edge\"><title>1&#45;&gt;3</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M212.053,-142.472C217.747,-143.306 224.135,-144.152 230,-144.724 290.954,-150.67 306.875,-155.522 367.74,-148.724 405.78,-144.476 414.445,-138.335 451.74,-129.724 455.503,-128.856 459.42,-127.945 463.337,-127.029\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"470.353,-125.385 464.257,-130.049 466.946,-126.184 463.538,-126.982 463.538,-126.982 463.538,-126.982 466.946,-126.184 462.819,-123.915 470.353,-125.385 470.353,-125.385\"/>\n",
-        "<text text-anchor=\"start\" x=\"320.87\" y=\"-156.524\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
+        "<g id=\"edge11\" class=\"edge\"><title>1&#45;&gt;3</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M212.053,-142.376C217.747,-143.21 224.135,-144.056 230,-144.629 290.954,-150.574 306.875,-155.426 367.74,-148.629 405.78,-144.38 414.445,-138.239 451.74,-129.629 455.503,-128.76 459.42,-127.849 463.337,-126.934\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"470.353,-125.29 464.257,-129.953 466.946,-126.088 463.538,-126.886 463.538,-126.886 463.538,-126.886 466.946,-126.088 462.819,-123.82 470.353,-125.29 470.353,-125.29\"/>\n",
+        "<text text-anchor=\"start\" x=\"320.87\" y=\"-156.429\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;4 -->\n",
-        "<g id=\"edge7\" class=\"edge\"><title>2&#45;&gt;4</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M211.902,-61.1743C235.09,-64.5356 277.254,-70.6476 306.827,-74.9345\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"314.056,-75.9823 306.676,-78.0954 310.592,-75.4801 307.128,-74.978 307.128,-74.978 307.128,-74.978 310.592,-75.4801 307.58,-71.8606 314.056,-75.9823 314.056,-75.9823\"/>\n",
-        "<text text-anchor=\"start\" x=\"230\" y=\"-77.5243\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
+        "<g id=\"edge12\" class=\"edge\"><title>2&#45;&gt;4</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M211.902,-61.0786C235.09,-64.4399 277.254,-70.5518 306.827,-74.8387\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"314.056,-75.8865 306.676,-77.9996 310.592,-75.3844 307.128,-74.8822 307.128,-74.8822 307.128,-74.8822 310.592,-75.3844 307.58,-71.7648 314.056,-75.8865 314.056,-75.8865\"/>\n",
+        "<text text-anchor=\"start\" x=\"230\" y=\"-77.4285\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;3 -->\n",
-        "<g id=\"edge8\" class=\"edge\"><title>2&#45;&gt;3</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M210.836,-51.7654C241.387,-39.2671 310.501,-15.5008 367.74,-28.7243 408.217,-38.0754 417.568,-46.1003 451.74,-69.7243 459.626,-75.1757 467.489,-81.8257 474.594,-88.4177\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"479.868,-93.4266 472.623,-90.89 477.33,-91.0163 474.793,-88.606 474.793,-88.606 474.793,-88.606 477.33,-91.0163 476.962,-86.3219 479.868,-93.4266 479.868,-93.4266\"/>\n",
-        "<text text-anchor=\"start\" x=\"320.87\" y=\"-32.5243\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
+        "<g id=\"edge13\" class=\"edge\"><title>2&#45;&gt;3</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M210.802,-51.822C241.295,-39.584 310.314,-16.2435 367.74,-28.6285 407.795,-37.2671 418.047,-43.3094 451.74,-66.6285 460.268,-72.5308 468.613,-79.9564 476,-87.3006\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"480.952,-92.3522 473.802,-89.5581 478.502,-89.8527 476.052,-87.3531 476.052,-87.3531 476.052,-87.3531 478.502,-89.8527 478.301,-85.1481 480.952,-92.3522 480.952,-92.3522\"/>\n",
+        "<text text-anchor=\"start\" x=\"320.87\" y=\"-32.4285\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;5 -->\n",
-        "<g id=\"edge9\" class=\"edge\"><title>2&#45;&gt;5</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M205.362,-44.6743C211.612,-37.3566 220.243,-29.0525 230,-24.7243 320.177,15.2778 353.812,-2.80154 451.74,-14.7243 516.239,-22.5771 589.349,-44.0187 629.979,-57.0979\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"636.696,-59.2796 629.066,-60.1132 633.368,-58.1984 630.039,-57.1172 630.039,-57.1172 630.039,-57.1172 633.368,-58.1984 631.012,-54.1213 636.696,-59.2796 636.696,-59.2796\"/>\n",
-        "<text text-anchor=\"start\" x=\"387.74\" y=\"-18.5243\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
+        "<g id=\"edge14\" class=\"edge\"><title>2&#45;&gt;5</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M205.362,-44.5785C211.612,-37.2608 220.243,-28.9567 230,-24.6285 320.177,15.3736 353.778,-2.98438 451.74,-14.6285 516.262,-22.2978 589.363,-43.8039 629.986,-56.9442\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"636.702,-59.1365 629.07,-59.9588 633.375,-58.0504 630.048,-56.9643 630.048,-56.9643 630.048,-56.9643 633.375,-58.0504 631.025,-53.9698 636.702,-59.1365 636.702,-59.1365\"/>\n",
+        "<text text-anchor=\"start\" x=\"387.74\" y=\"-18.4285\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "</g>\n",
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f734006f0c0> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd270264270> >"
        ]
       }
      ],
@@ -2216,7 +2215,7 @@
         "<text text-anchor=\"start\" x=\"904.304\" y=\"-297.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;4 -->\n",
-        "<g id=\"edge5\" class=\"edge\"><title>0&#45;&gt;4</title>\n",
+        "<g id=\"edge35\" class=\"edge\"><title>0&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M57.667,-310.068C60.9454,-370.381 80.2273,-561 193,-561 193,-561 193,-561 806.362,-561 835.275,-561 838.164,-540.186 852.362,-515 882.062,-462.32 894.602,-392.555 899.788,-348.978\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"900.587,-341.951 902.925,-349.262 900.191,-345.429 899.796,-348.906 899.796,-348.906 899.796,-348.906 900.191,-345.429 896.666,-348.55 900.587,-341.951 900.587,-341.951\"/>\n",
         "<text text-anchor=\"start\" x=\"500.181\" y=\"-564.8\" font-family=\"Lato\" font-size=\"14.00\">c</text>\n",
@@ -2229,7 +2228,7 @@
         "<text text-anchor=\"start\" x=\"503.681\" y=\"-282.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;3 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>0&#45;&gt;3</title>\n",
+        "<g id=\"edge34\" class=\"edge\"><title>0&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M73.3993,-285.969C103.776,-275.155 171.076,-252.862 230,-245 314.358,-233.745 412.459,-261.017 464.944,-278.909\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"471.732,-281.258 464.087,-281.946 468.425,-280.113 465.117,-278.969 465.117,-278.969 465.117,-278.969 468.425,-280.113 466.147,-275.992 471.732,-281.258 471.732,-281.258\"/>\n",
         "<text text-anchor=\"start\" x=\"243\" y=\"-248.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
@@ -2237,10 +2236,10 @@
         "<!-- 1 -->\n",
         "<g id=\"node9\" class=\"node\"><title>1</title>\n",
         "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"194\" cy=\"-401\" rx=\"18\" ry=\"18\"/>\n",
-        "<text text-anchor=\"middle\" x=\"194\" y=\"-397.3\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
+        "<text text-anchor=\"start\" x=\"189.5\" y=\"-397.3\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;1 -->\n",
-        "<g id=\"edge2\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
+        "<g id=\"edge32\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M70.5374,-302.85C94.8747,-322.355 146.073,-363.389 173.942,-385.726\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"179.517,-390.194 172.085,-388.274 176.786,-388.005 174.055,-385.816 174.055,-385.816 174.055,-385.816 176.786,-388.005 176.025,-383.358 179.517,-390.194 179.517,-390.194\"/>\n",
         "<text text-anchor=\"start\" x=\"92\" y=\"-375.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
@@ -2251,16 +2250,16 @@
         "<text text-anchor=\"middle\" x=\"194\" y=\"-152.3\" font-family=\"Lato\" font-size=\"14.00\">2</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;2 -->\n",
-        "<g id=\"edge3\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
+        "<g id=\"edge33\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M61.7076,-274.613C66.9079,-258.007 76.6402,-233.054 92,-216 113.894,-191.69 148.005,-174.288 170.427,-164.682\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"176.984,-161.951 171.732,-167.55 173.752,-163.297 170.521,-164.642 170.521,-164.642 170.521,-164.642 173.752,-163.297 169.31,-161.734 176.984,-161.951 176.984,-161.951\"/>\n",
         "<text text-anchor=\"start\" x=\"94\" y=\"-219.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 4&#45;&gt;4 -->\n",
-        "<g id=\"edge20\" class=\"edge\"><title>4&#45;&gt;4</title>\n",
+        "<g id=\"edge2\" class=\"edge\"><title>4&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M893.804,-340.463C893.804,-351.284 897.304,-359.941 904.304,-359.941 909.663,-359.941 912.971,-354.867 914.227,-347.632\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"914.804,-340.463 917.382,-347.693 914.523,-343.952 914.242,-347.441 914.242,-347.441 914.242,-347.441 914.523,-343.952 911.102,-347.188 914.804,-340.463 914.804,-340.463\"/>\n",
-        "<text text-anchor=\"middle\" x=\"904.304\" y=\"-363.741\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
+        "<text text-anchor=\"start\" x=\"899.804\" y=\"-363.741\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- 7 -->\n",
         "<g id=\"node4\" class=\"node\"><title>7</title>\n",
@@ -2268,13 +2267,13 @@
         "<text text-anchor=\"middle\" x=\"805.362\" y=\"-234.3\" font-family=\"Lato\" font-size=\"14.00\">7</text>\n",
         "</g>\n",
         "<!-- 7&#45;&gt;4 -->\n",
-        "<g id=\"edge32\" class=\"edge\"><title>7&#45;&gt;4</title>\n",
+        "<g id=\"edge4\" class=\"edge\"><title>7&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M820.666,-248.329C833.613,-257.677 853.176,-271.803 870.018,-283.965\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"876.082,-288.344 868.563,-286.8 873.245,-286.295 870.407,-284.246 870.407,-284.246 870.407,-284.246 873.245,-286.295 872.251,-281.692 876.082,-288.344 876.082,-288.344\"/>\n",
         "<text text-anchor=\"start\" x=\"841.362\" y=\"-274.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "</g>\n",
         "<!-- 7&#45;&gt;7 -->\n",
-        "<g id=\"edge31\" class=\"edge\"><title>7&#45;&gt;7</title>\n",
+        "<g id=\"edge3\" class=\"edge\"><title>7&#45;&gt;7</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M798.331,-254.664C796.769,-264.625 799.112,-274 805.362,-274 810.05,-274 812.54,-268.727 812.833,-261.888\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"812.394,-254.664 815.963,-261.46 812.606,-258.158 812.819,-261.651 812.819,-261.651 812.819,-261.651 812.606,-258.158 809.675,-261.842 812.394,-254.664 812.394,-254.664\"/>\n",
         "<text text-anchor=\"start\" x=\"801.862\" y=\"-277.8\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
@@ -2285,19 +2284,19 @@
         "<text text-anchor=\"middle\" x=\"805.362\" y=\"-30.3\" font-family=\"Lato\" font-size=\"14.00\">8</text>\n",
         "</g>\n",
         "<!-- 8&#45;&gt;4 -->\n",
-        "<g id=\"edge34\" class=\"edge\"><title>8&#45;&gt;4</title>\n",
+        "<g id=\"edge6\" class=\"edge\"><title>8&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M819.681,-44.9366C830.138,-54.2488 844.244,-68.5454 852.362,-84 883.259,-142.817 895.516,-219.939 900.309,-266.637\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"901.016,-273.863 897.199,-267.203 900.675,-270.38 900.334,-266.896 900.334,-266.896 900.334,-266.896 900.675,-270.38 903.469,-266.59 901.016,-273.863 901.016,-273.863\"/>\n",
         "<text text-anchor=\"start\" x=\"841.362\" y=\"-87.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "</g>\n",
         "<!-- 8&#45;&gt;7 -->\n",
-        "<g id=\"edge33\" class=\"edge\"><title>8&#45;&gt;7</title>\n",
+        "<g id=\"edge5\" class=\"edge\"><title>8&#45;&gt;7</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M794.478,-48.5917C776.969,-73.0775 743.258,-124.665 730.862,-174.5 729.253,-180.97 727.685,-183.639 730.862,-189.5 741.513,-209.143 763.946,-222.08 781.427,-229.614\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"788.087,-232.332 780.416,-232.604 784.847,-231.009 781.606,-229.687 781.606,-229.687 781.606,-229.687 784.847,-231.009 782.796,-226.771 788.087,-232.332 788.087,-232.332\"/>\n",
         "<text text-anchor=\"start\" x=\"719.862\" y=\"-178.3\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b</text>\n",
         "</g>\n",
         "<!-- 8&#45;&gt;8 -->\n",
-        "<g id=\"edge35\" class=\"edge\"><title>8&#45;&gt;8</title>\n",
+        "<g id=\"edge7\" class=\"edge\"><title>8&#45;&gt;8</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M798.331,-50.6641C796.769,-60.625 799.112,-70 805.362,-70 810.05,-70 812.54,-64.7266 812.833,-57.8876\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"812.394,-50.6641 815.963,-57.4598 812.606,-54.1576 812.819,-57.6511 812.819,-57.6511 812.819,-57.6511 812.606,-54.1576 809.675,-57.8425 812.394,-50.6641 812.394,-50.6641\"/>\n",
         "<text text-anchor=\"start\" x=\"788.362\" y=\"-73.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b</text>\n",
@@ -2309,43 +2308,43 @@
         "<text text-anchor=\"start\" x=\"332.87\" y=\"-288.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;4 -->\n",
-        "<g id=\"edge24\" class=\"edge\"><title>5&#45;&gt;4</title>\n",
+        "<g id=\"edge11\" class=\"edge\"><title>5&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M355.965,-322.236C380.826,-358.408 436.179,-426 502.681,-426 502.681,-426 502.681,-426 806.362,-426 848.245,-426 875.351,-381.069 889.969,-346.658\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"892.727,-339.932 892.986,-347.604 891.399,-343.171 890.071,-346.409 890.071,-346.409 890.071,-346.409 891.399,-343.171 887.157,-345.214 892.727,-339.932 892.727,-339.932\"/>\n",
         "<text text-anchor=\"start\" x=\"644.492\" y=\"-429.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; c</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;7 -->\n",
-        "<g id=\"edge22\" class=\"edge\"><title>5&#45;&gt;7</title>\n",
+        "<g id=\"edge9\" class=\"edge\"><title>5&#45;&gt;7</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M364.485,-313.764C371.27,-317.795 378.763,-322.151 385.74,-326 422.464,-346.257 428.968,-359.171 469.74,-369 499.07,-376.071 508.014,-374.793 537.622,-369 637.518,-349.454 741.871,-282.226 784.476,-252.422\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"790.306,-248.307 786.404,-254.917 787.446,-250.325 784.587,-252.344 784.587,-252.344 784.587,-252.344 787.446,-250.325 782.77,-249.77 790.306,-248.307 790.306,-248.307\"/>\n",
         "<text text-anchor=\"start\" x=\"570.622\" y=\"-368.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; c</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;5 -->\n",
-        "<g id=\"edge21\" class=\"edge\"><title>5&#45;&gt;5</title>\n",
+        "<g id=\"edge8\" class=\"edge\"><title>5&#45;&gt;5</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M327.041,-323.087C325.128,-334.6 329.737,-344.87 340.87,-344.87 349.568,-344.87 354.284,-338.602 355.018,-330.369\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"354.699,-323.087 358.153,-329.942 354.852,-326.583 355.006,-330.08 355.006,-330.08 355.006,-330.08 354.852,-326.583 351.859,-330.218 354.699,-323.087 354.699,-323.087\"/>\n",
         "<text text-anchor=\"start\" x=\"322.87\" y=\"-348.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;3 -->\n",
-        "<g id=\"edge23\" class=\"edge\"><title>5&#45;&gt;3</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M366.143,-290.787C372.433,-288.807 379.262,-287.009 385.74,-286 411.218,-282.033 440.142,-283.712 462.849,-286.418\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"469.991,-287.326 462.649,-289.568 466.519,-286.885 463.047,-286.443 463.047,-286.443 463.047,-286.443 466.519,-286.885 463.445,-283.318 469.991,-287.326 469.991,-287.326\"/>\n",
-        "<text text-anchor=\"start\" x=\"398.74\" y=\"-289.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
+        "<g id=\"edge10\" class=\"edge\"><title>5&#45;&gt;3</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M367.222,-293.208C373.247,-291.876 379.685,-290.681 385.74,-290 411.235,-287.131 440.045,-287.824 462.689,-289.262\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"469.813,-289.752 462.613,-292.414 466.321,-289.512 462.829,-289.272 462.829,-289.272 462.829,-289.272 466.321,-289.512 463.045,-286.129 469.813,-289.752 469.813,-289.752\"/>\n",
+        "<text text-anchor=\"start\" x=\"398.74\" y=\"-293.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;4 -->\n",
-        "<g id=\"edge18\" class=\"edge\"><title>3&#45;&gt;4</title>\n",
+        "<g id=\"edge14\" class=\"edge\"><title>3&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M536.205,-303.058C542.57,-304.693 549.261,-306.132 555.622,-307 665.904,-322.04 797.699,-315.933 862.8,-311.339\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"870.024,-310.816 863.27,-314.463 866.533,-311.069 863.042,-311.322 863.042,-311.322 863.042,-311.322 866.533,-311.069 862.815,-308.18 870.024,-310.816 870.024,-310.816\"/>\n",
         "<text text-anchor=\"start\" x=\"734.862\" y=\"-320.8\" font-family=\"Lato\" font-size=\"14.00\">c</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;5 -->\n",
-        "<g id=\"edge16\" class=\"edge\"><title>3&#45;&gt;5</title>\n",
+        "<g id=\"edge12\" class=\"edge\"><title>3&#45;&gt;5</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M470.816,-301.696C464.539,-303.071 457.968,-304.276 451.74,-305 422.603,-308.386 415.026,-306.664 385.74,-305 382.196,-304.799 378.498,-304.507 374.818,-304.163\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"367.81,-303.45 375.093,-301.025 371.292,-303.804 374.774,-304.159 374.774,-304.159 374.774,-304.159 371.292,-303.804 374.455,-307.292 367.81,-303.45 367.81,-303.45\"/>\n",
         "<text text-anchor=\"start\" x=\"385.74\" y=\"-310.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;3 -->\n",
-        "<g id=\"edge17\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
+        "<g id=\"edge13\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M488.366,-323.41C487.686,-335.168 492.791,-344.941 503.681,-344.941 512.19,-344.941 517.167,-338.976 518.612,-330.76\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"518.996,-323.41 521.777,-330.565 518.814,-326.906 518.631,-330.401 518.631,-330.401 518.631,-330.401 518.814,-326.906 515.485,-330.237 518.996,-323.41 518.996,-323.41\"/>\n",
         "<text text-anchor=\"start\" x=\"483.681\" y=\"-348.741\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
@@ -2357,103 +2356,103 @@
         "<text text-anchor=\"start\" x=\"654.492\" y=\"-223.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#b276b2\">\u2778</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;6 -->\n",
-        "<g id=\"edge19\" class=\"edge\"><title>3&#45;&gt;6</title>\n",
+        "<g id=\"edge15\" class=\"edge\"><title>3&#45;&gt;6</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M537.601,-290.418C560.844,-287.627 592.242,-281.86 617.622,-270 624.243,-266.906 630.749,-262.621 636.641,-258.108\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"642.308,-253.555 638.824,-260.395 639.58,-255.747 636.851,-257.939 636.851,-257.939 636.851,-257.939 639.58,-255.747 634.878,-255.484 642.308,-253.555 642.308,-253.555\"/>\n",
         "<text text-anchor=\"start\" x=\"555.622\" y=\"-291.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 6&#45;&gt;4 -->\n",
-        "<g id=\"edge28\" class=\"edge\"><title>6&#45;&gt;4</title>\n",
+        "<g id=\"edge19\" class=\"edge\"><title>6&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M673.849,-210.452C681.063,-196.743 692.138,-180.878 707.362,-173 731.836,-160.337 742.142,-168.718 769.362,-173 797.965,-177.499 808.523,-175.204 831.362,-193 857.027,-212.997 875.943,-244.903 887.92,-270.041\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"890.964,-276.604 885.161,-271.579 889.492,-273.429 888.019,-270.254 888.019,-270.254 888.019,-270.254 889.492,-273.429 890.876,-268.928 890.964,-276.604 890.964,-276.604\"/>\n",
         "<text text-anchor=\"start\" x=\"787.362\" y=\"-196.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; c</text>\n",
         "</g>\n",
         "<!-- 6&#45;&gt;7 -->\n",
-        "<g id=\"edge26\" class=\"edge\"><title>6&#45;&gt;7</title>\n",
+        "<g id=\"edge17\" class=\"edge\"><title>6&#45;&gt;7</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M689.659,-235.557C715.585,-236.109 754.968,-236.948 780.179,-237.485\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"787.205,-237.635 780.139,-240.635 783.705,-237.56 780.206,-237.485 780.206,-237.485 780.206,-237.485 783.705,-237.56 780.273,-234.336 787.205,-237.635 787.205,-237.635\"/>\n",
         "<text text-anchor=\"start\" x=\"707.362\" y=\"-241.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; c</text>\n",
         "</g>\n",
         "<!-- 6&#45;&gt;8 -->\n",
-        "<g id=\"edge30\" class=\"edge\"><title>6&#45;&gt;8</title>\n",
+        "<g id=\"edge21\" class=\"edge\"><title>6&#45;&gt;8</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M671.019,-209.421C678.258,-187.248 690.576,-154.9 707.362,-130 729.275,-97.4969 763.378,-66.9095 784.763,-49.3371\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"790.437,-44.7351 786.985,-51.5912 787.718,-46.9399 785,-49.1447 785,-49.1447 785,-49.1447 787.718,-46.9399 783.016,-46.6983 790.437,-44.7351 790.437,-44.7351\"/>\n",
         "<text text-anchor=\"start\" x=\"709.362\" y=\"-133.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; c</text>\n",
         "</g>\n",
         "<!-- 6&#45;&gt;5 -->\n",
-        "<g id=\"edge25\" class=\"edge\"><title>6&#45;&gt;5</title>\n",
+        "<g id=\"edge16\" class=\"edge\"><title>6&#45;&gt;5</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M635.88,-231.089C598.645,-226.276 527.686,-220.402 469.74,-235 433.008,-244.254 394.782,-265.459 369.806,-281.146\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"363.751,-285.004 367.962,-278.586 366.703,-283.123 369.654,-281.243 369.654,-281.243 369.654,-281.243 366.703,-283.123 371.347,-283.899 363.751,-285.004 363.751,-285.004\"/>\n",
         "<text text-anchor=\"start\" x=\"470.681\" y=\"-238.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 6&#45;&gt;3 -->\n",
-        "<g id=\"edge27\" class=\"edge\"><title>6&#45;&gt;3</title>\n",
+        "<g id=\"edge18\" class=\"edge\"><title>6&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M635.608,-235.094C613.483,-236.05 581.255,-239.561 555.622,-251 547.935,-254.43 540.467,-259.349 533.724,-264.619\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"528.241,-269.105 531.665,-262.234 530.95,-266.888 533.659,-264.672 533.659,-264.672 533.659,-264.672 530.95,-266.888 535.654,-267.11 528.241,-269.105 528.241,-269.105\"/>\n",
         "<text text-anchor=\"start\" x=\"566.622\" y=\"-254.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 6&#45;&gt;6 -->\n",
-        "<g id=\"edge29\" class=\"edge\"><title>6&#45;&gt;6</title>\n",
+        "<g id=\"edge20\" class=\"edge\"><title>6&#45;&gt;6</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M648.956,-258.546C647.285,-269.872 651.797,-279.87 662.492,-279.87 670.848,-279.87 675.43,-273.768 676.238,-265.698\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"676.029,-258.546 679.382,-265.451 676.131,-262.045 676.233,-265.543 676.233,-265.543 676.233,-265.543 676.131,-262.045 673.085,-265.636 676.029,-258.546 676.029,-258.546\"/>\n",
         "<text text-anchor=\"start\" x=\"631.492\" y=\"-283.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;4 -->\n",
-        "<g id=\"edge9\" class=\"edge\"><title>1&#45;&gt;4</title>\n",
+        "<g id=\"edge25\" class=\"edge\"><title>1&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M204.181,-415.904C224.494,-446.805 276.501,-515 339.87,-515 339.87,-515 339.87,-515 806.362,-515 878.815,-515 897.231,-409.71 901.835,-349.314\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"902.33,-342.182 904.987,-349.383 902.088,-345.673 901.845,-349.165 901.845,-349.165 901.845,-349.165 902.088,-345.673 898.702,-348.947 902.33,-342.182 902.33,-342.182\"/>\n",
         "<text text-anchor=\"start\" x=\"568.622\" y=\"-518.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;7 -->\n",
-        "<g id=\"edge7\" class=\"edge\"><title>1&#45;&gt;7</title>\n",
+        "<g id=\"edge23\" class=\"edge\"><title>1&#45;&gt;7</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M210.607,-408.187C275.248,-436.821 526.581,-536.867 697.362,-445 766.013,-408.072 791.939,-309.458 800.563,-262.942\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"801.803,-255.941 803.684,-263.383 801.192,-259.387 800.582,-262.834 800.582,-262.834 800.582,-262.834 801.192,-259.387 797.48,-262.285 801.803,-255.941 801.803,-255.941\"/>\n",
         "<text text-anchor=\"start\" x=\"487.681\" y=\"-486.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;5 -->\n",
-        "<g id=\"edge6\" class=\"edge\"><title>1&#45;&gt;5</title>\n",
+        "<g id=\"edge22\" class=\"edge\"><title>1&#45;&gt;5</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M208.016,-389.626C214.488,-384.125 222.509,-377.531 230,-372 256.832,-352.188 288.864,-331.514 311.399,-317.429\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"317.49,-313.637 313.212,-320.011 314.519,-315.487 311.548,-317.337 311.548,-317.337 311.548,-317.337 314.519,-315.487 309.883,-314.662 317.49,-313.637 317.49,-313.637\"/>\n",
         "<text text-anchor=\"start\" x=\"245\" y=\"-375.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;3 -->\n",
-        "<g id=\"edge8\" class=\"edge\"><title>1&#45;&gt;3</title>\n",
+        "<g id=\"edge24\" class=\"edge\"><title>1&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M212.249,-399.184C232.432,-396.927 266.805,-392.669 296,-387 328.27,-380.734 336.969,-380.564 367.74,-369 407,-354.246 415.426,-346.984 451.74,-326 457.368,-322.748 463.242,-319.147 468.916,-315.554\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"474.974,-311.675 470.777,-318.103 472.026,-313.563 469.078,-315.45 469.078,-315.45 469.078,-315.45 472.026,-313.563 467.38,-312.797 474.974,-311.675 474.974,-311.675\"/>\n",
         "<text text-anchor=\"start\" x=\"320.87\" y=\"-388.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;4 -->\n",
-        "<g id=\"edge13\" class=\"edge\"><title>2&#45;&gt;4</title>\n",
+        "<g id=\"edge29\" class=\"edge\"><title>2&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M210.943,-149.342C280.632,-121.292 564.169,-18.1532 769.362,-106 836.972,-134.945 874.696,-218.523 891.828,-268.643\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"894.11,-275.484 888.907,-269.841 893.002,-272.164 891.895,-268.844 891.895,-268.844 891.895,-268.844 893.002,-272.164 894.883,-267.847 894.11,-275.484 894.11,-275.484\"/>\n",
         "<text text-anchor=\"start\" x=\"568.622\" y=\"-76.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;7 -->\n",
-        "<g id=\"edge11\" class=\"edge\"><title>2&#45;&gt;7</title>\n",
+        "<g id=\"edge27\" class=\"edge\"><title>2&#45;&gt;7</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M212.081,-154.828C217.778,-154.49 224.16,-154.167 230,-154 259.321,-153.163 266.676,-153.272 296,-154 475.302,-158.45 524.982,-146.461 697.362,-196 727.476,-204.654 760.9,-218.491 782.246,-227.899\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"788.733,-230.785 781.057,-230.817 785.535,-229.362 782.338,-227.939 782.338,-227.939 782.338,-227.939 785.535,-229.362 783.618,-225.061 788.733,-230.785 788.733,-230.785\"/>\n",
         "<text text-anchor=\"start\" x=\"472.681\" y=\"-165.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;8 -->\n",
-        "<g id=\"edge15\" class=\"edge\"><title>2&#45;&gt;8</title>\n",
+        "<g id=\"edge31\" class=\"edge\"><title>2&#45;&gt;8</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M197.174,-138.121C200.594,-117.78 209.153,-84.9384 230,-66 267.555,-31.8837 289.132,-35 339.87,-35 339.87,-35 339.87,-35 663.492,-35 704.353,-35 751.879,-34.5741 779.967,-34.2782\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"787.013,-34.2024 780.048,-37.4276 783.513,-34.2401 780.014,-34.2778 780.014,-34.2778 780.014,-34.2778 783.513,-34.2401 779.98,-31.128 787.013,-34.2024 787.013,-34.2024\"/>\n",
         "<text text-anchor=\"start\" x=\"474.681\" y=\"-38.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;5 -->\n",
-        "<g id=\"edge10\" class=\"edge\"><title>2&#45;&gt;5</title>\n",
+        "<g id=\"edge26\" class=\"edge\"><title>2&#45;&gt;5</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M195.981,-174.257C198.235,-198.072 205.65,-239.571 230,-264 250.378,-284.444 282.531,-293.279 306.8,-297.097\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"313.738,-298.087 306.363,-300.216 310.273,-297.593 306.808,-297.098 306.808,-297.098 306.808,-297.098 310.273,-297.593 307.253,-293.98 313.738,-298.087 313.738,-298.087\"/>\n",
         "<text text-anchor=\"start\" x=\"230\" y=\"-299.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;3 -->\n",
-        "<g id=\"edge12\" class=\"edge\"><title>2&#45;&gt;3</title>\n",
+        "<g id=\"edge28\" class=\"edge\"><title>2&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M210.89,-162.793C216.831,-165.217 223.673,-167.872 230,-170 326.878,-202.587 366.672,-174.337 451.74,-231 462.543,-238.196 461.551,-243.929 469.74,-254 471.865,-256.613 474.085,-259.31 476.325,-262.007\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"480.926,-267.52 474.022,-264.165 478.683,-264.833 476.44,-262.146 476.44,-262.146 476.44,-262.146 478.683,-264.833 478.859,-260.128 480.926,-267.52 480.926,-267.52\"/>\n",
         "<text text-anchor=\"start\" x=\"320.87\" y=\"-198.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;6 -->\n",
-        "<g id=\"edge14\" class=\"edge\"><title>2&#45;&gt;6</title>\n",
+        "<g id=\"edge30\" class=\"edge\"><title>2&#45;&gt;6</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M212.241,-156.813C253.736,-158.956 362.356,-165.685 451.74,-181 526.593,-193.825 544.333,-202.095 617.622,-222 621.551,-223.067 625.665,-224.228 629.733,-225.402\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"636.493,-227.377 628.891,-228.438 633.134,-226.396 629.774,-225.414 629.774,-225.414 629.774,-225.414 633.134,-226.396 630.657,-222.391 636.493,-227.377 636.493,-227.377\"/>\n",
         "<text text-anchor=\"start\" x=\"387.74\" y=\"-184.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
@@ -2462,7 +2461,7 @@
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f734006fbd0> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd270264e40> >"
        ]
       }
      ],
@@ -2559,12 +2558,12 @@
         "<g id=\"edge2\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M354.577,-68.37C353.937,-78.9238 357.034,-87.8701 363.87,-87.8701 369.104,-87.8701 372.146,-82.6259 372.997,-75.4312\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"373.163,-68.37 376.148,-75.4419 373.081,-71.869 372.999,-75.3681 372.999,-75.3681 372.999,-75.3681 373.081,-71.869 369.849,-75.2943 373.163,-68.37 373.163,-68.37\"/>\n",
-        "<text text-anchor=\"middle\" x=\"363.87\" y=\"-91.6701\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
+        "<text text-anchor=\"start\" x=\"359.37\" y=\"-91.6701\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- 1 -->\n",
         "<g id=\"node4\" class=\"node\"><title>1</title>\n",
         "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"272\" cy=\"-43\" rx=\"18\" ry=\"18\"/>\n",
-        "<text text-anchor=\"middle\" x=\"272\" y=\"-39.3\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
+        "<text text-anchor=\"start\" x=\"267.5\" y=\"-39.3\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;0 -->\n",
         "<g id=\"edge3\" class=\"edge\"><title>1&#45;&gt;0</title>\n",
@@ -2606,7 +2605,7 @@
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f734006ff60> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd2702fd4b0> >"
        ]
       },
       {
@@ -2646,7 +2645,7 @@
         "<polygon fill=\"black\" stroke=\"black\" points=\"37.9419,-218 30.9419,-221.15 34.4419,-218 30.9419,-218 30.9419,-218 30.9419,-218 34.4419,-218 30.9418,-214.85 37.9419,-218 37.9419,-218\"/>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;2 -->\n",
-        "<g id=\"edge6\" class=\"edge\"><title>2&#45;&gt;2</title>\n",
+        "<g id=\"edge4\" class=\"edge\"><title>2&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M49.6208,-235.037C48.3189,-244.858 50.4453,-254 56,-254 60.166,-254 62.4036,-248.858 62.7128,-242.143\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"62.3792,-235.037 65.8541,-241.882 62.5434,-238.533 62.7076,-242.03 62.7076,-242.03 62.7076,-242.03 62.5434,-238.533 59.561,-242.177 62.3792,-235.037 62.3792,-235.037\"/>\n",
         "<text text-anchor=\"start\" x=\"36\" y=\"-257.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
@@ -2657,10 +2656,10 @@
         "<text text-anchor=\"middle\" x=\"366.87\" y=\"-228.3\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;1 -->\n",
-        "<g id=\"edge5\" class=\"edge\"><title>2&#45;&gt;1</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M73.5772,-223.108C79.3503,-224.66 85.9073,-226.173 92,-227 116.282,-230.297 279.008,-231.526 341.497,-231.88\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"348.604,-231.919 341.587,-235.031 345.104,-231.9 341.604,-231.881 341.604,-231.881 341.604,-231.881 345.104,-231.9 341.622,-228.731 348.604,-231.919 348.604,-231.919\"/>\n",
-        "<text text-anchor=\"start\" x=\"172\" y=\"-233.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
+        "<g id=\"edge3\" class=\"edge\"><title>2&#45;&gt;1</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M73.5772,-223.108C79.3503,-224.66 85.9073,-226.173 92,-227 183.472,-239.422 293.689,-235.88 341.631,-233.442\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"348.779,-233.063 341.955,-236.58 345.283,-233.249 341.788,-233.434 341.788,-233.434 341.788,-233.434 345.283,-233.249 341.621,-230.289 348.779,-233.063 348.779,-233.063\"/>\n",
+        "<text text-anchor=\"start\" x=\"172\" y=\"-238.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 3 -->\n",
         "<g id=\"node5\" class=\"node\"><title>3</title>\n",
@@ -2668,7 +2667,7 @@
         "<text text-anchor=\"middle\" x=\"205\" y=\"-141.3\" font-family=\"Lato\" font-size=\"14.00\">3</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;3 -->\n",
-        "<g id=\"edge7\" class=\"edge\"><title>2&#45;&gt;3</title>\n",
+        "<g id=\"edge5\" class=\"edge\"><title>2&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M64.0604,-201.651C69.8835,-190.153 79.2587,-175.378 92,-167 118.559,-149.537 155.808,-145.32 179.922,-144.607\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"186.958,-144.487 180.013,-147.756 183.459,-144.547 179.959,-144.606 179.959,-144.606 179.959,-144.606 183.459,-144.547 179.905,-141.457 186.958,-144.487 186.958,-144.487\"/>\n",
         "<text text-anchor=\"start\" x=\"92\" y=\"-170.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
@@ -2686,13 +2685,13 @@
         "<text text-anchor=\"start\" x=\"349.87\" y=\"-91.6701\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;2 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>1&#45;&gt;2</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M349.026,-235.748C315.396,-242.767 237.532,-256.691 172,-251 136.039,-247.877 126.086,-248.877 92,-237 87.2624,-235.349 82.3986,-233.108 77.8606,-230.743\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"71.4979,-227.245 79.1496,-227.857 74.565,-228.931 77.632,-230.617 77.632,-230.617 77.632,-230.617 74.565,-228.931 76.1143,-233.378 71.4979,-227.245 71.4979,-227.245\"/>\n",
-        "<text text-anchor=\"start\" x=\"185\" y=\"-255.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
+        "<g id=\"edge7\" class=\"edge\"><title>1&#45;&gt;2</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M349.268,-236.461C315.752,-244.897 237.606,-261.684 172,-254 135.704,-249.749 126.42,-247.279 92,-235 87.6576,-233.451 83.1429,-231.519 78.8564,-229.52\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"72.3659,-226.366 80.0388,-226.592 75.514,-227.896 78.6621,-229.425 78.6621,-229.425 78.6621,-229.425 75.514,-227.896 77.2854,-232.259 72.3659,-226.366 72.3659,-226.366\"/>\n",
+        "<text text-anchor=\"start\" x=\"185\" y=\"-258.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;1 -->\n",
-        "<g id=\"edge3\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
+        "<g id=\"edge6\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M354.624,-245.667C349.726,-256.656 353.808,-268 366.87,-268 377.075,-268 381.799,-261.076 381.042,-252.807\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"379.116,-245.667 383.98,-251.605 380.027,-249.046 380.939,-252.426 380.939,-252.426 380.939,-252.426 380.027,-249.046 377.897,-253.246 379.116,-245.667 379.116,-245.667\"/>\n",
         "<text text-anchor=\"start\" x=\"348.87\" y=\"-271.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
@@ -2725,7 +2724,7 @@
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f734006fcc0> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd270264d80> >"
        ]
       },
       {
@@ -2784,7 +2783,7 @@
         "<text text-anchor=\"start\" x=\"325.941\" y=\"-110.852\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;3 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>0&#45;&gt;3</title>\n",
+        "<g id=\"edge17\" class=\"edge\"><title>0&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M74.1685,-117.309C116.234,-117.937 225.34,-119.565 284.828,-120.453\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"291.829,-120.558 284.783,-123.603 288.33,-120.506 284.83,-120.453 284.83,-120.453 284.83,-120.453 288.33,-120.506 284.877,-117.304 291.829,-120.558 291.829,-120.558\"/>\n",
         "<text text-anchor=\"start\" x=\"176\" y=\"-123.852\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
@@ -2795,7 +2794,7 @@
         "<text text-anchor=\"middle\" x=\"196\" y=\"-164.352\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;1 -->\n",
-        "<g id=\"edge2\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
+        "<g id=\"edge15\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M72.9832,-123.585C78.9348,-125.98 85.7589,-128.684 92,-131.052 119.452,-141.47 151.293,-152.792 172.221,-160.132\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"178.878,-162.461 171.23,-163.122 175.574,-161.305 172.271,-160.149 172.271,-160.149 172.271,-160.149 175.574,-161.305 173.311,-157.176 178.878,-162.461 178.878,-162.461\"/>\n",
         "<text text-anchor=\"start\" x=\"92\" y=\"-158.852\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
@@ -2806,13 +2805,13 @@
         "<text text-anchor=\"middle\" x=\"196\" y=\"-51.3523\" font-family=\"Lato\" font-size=\"14.00\">2</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;2 -->\n",
-        "<g id=\"edge3\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
+        "<g id=\"edge16\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M69.4267,-104.755C75.7584,-99.0355 83.8327,-92.5246 92,-88.0523 117.451,-74.1158 149.707,-64.98 171.278,-59.9273\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"178.159,-58.3693 172.027,-62.9875 174.745,-59.1423 171.331,-59.9153 171.331,-59.9153 171.331,-59.9153 174.745,-59.1423 170.636,-56.843 178.159,-58.3693 178.159,-58.3693\"/>\n",
         "<text text-anchor=\"start\" x=\"94\" y=\"-91.8523\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;3 -->\n",
-        "<g id=\"edge10\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
+        "<g id=\"edge2\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M312.829,-152.495C312.547,-163.787 316.918,-172.993 325.941,-172.993 332.991,-172.993 337.2,-167.374 338.57,-159.531\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"339.053,-152.495 341.717,-159.694 338.814,-155.987 338.574,-159.478 338.574,-159.478 338.574,-159.478 338.814,-155.987 335.431,-159.263 339.053,-152.495 339.053,-152.495\"/>\n",
         "<text text-anchor=\"start\" x=\"305.941\" y=\"-176.793\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
@@ -2824,7 +2823,7 @@
         "<text text-anchor=\"start\" x=\"648.752\" y=\"-134.852\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;4 -->\n",
-        "<g id=\"edge11\" class=\"edge\"><title>3&#45;&gt;4</title>\n",
+        "<g id=\"edge3\" class=\"edge\"><title>3&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M354.589,-139.805C361.903,-144.065 369.973,-148.177 377.882,-151.052 462.117,-181.675 570.416,-165.223 623.502,-153.89\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"630.618,-152.331 624.455,-156.907 627.199,-153.08 623.78,-153.83 623.78,-153.83 623.78,-153.83 627.199,-153.08 623.106,-150.753 630.618,-152.331 630.618,-152.331\"/>\n",
         "<text text-anchor=\"start\" x=\"461.882\" y=\"-171.852\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
@@ -2836,67 +2835,67 @@
         "<text text-anchor=\"start\" x=\"486.882\" y=\"-38.8523\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#b276b2\">\u2778</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;5 -->\n",
-        "<g id=\"edge12\" class=\"edge\"><title>3&#45;&gt;5</title>\n",
+        "<g id=\"edge4\" class=\"edge\"><title>3&#45;&gt;5</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M359.869,-119.96C384.268,-117.974 417.688,-112.71 443.882,-99.0523 454.592,-93.4682 464.521,-84.8358 472.662,-76.3631\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"477.491,-71.137 475.054,-78.416 475.116,-73.7077 472.741,-76.2783 472.741,-76.2783 472.741,-76.2783 475.116,-73.7077 470.427,-74.1406 477.491,-71.137 477.491,-71.137\"/>\n",
         "<text text-anchor=\"start\" x=\"379.882\" y=\"-121.852\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 4&#45;&gt;3 -->\n",
-        "<g id=\"edge13\" class=\"edge\"><title>4&#45;&gt;3</title>\n",
+        "<g id=\"edge5\" class=\"edge\"><title>4&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M629.852,-146.11C570.447,-146.098 425.823,-145.201 377.882,-137.052 373.624,-136.329 369.228,-135.338 364.886,-134.202\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"358.135,-132.315 365.725,-131.166 361.506,-133.257 364.877,-134.2 364.877,-134.2 364.877,-134.2 361.506,-133.257 364.028,-137.233 358.135,-132.315 358.135,-132.315\"/>\n",
         "<text text-anchor=\"start\" x=\"474.882\" y=\"-149.852\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 4&#45;&gt;4 -->\n",
-        "<g id=\"edge14\" class=\"edge\"><title>4&#45;&gt;4</title>\n",
+        "<g id=\"edge6\" class=\"edge\"><title>4&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M642.923,-169.139C641.01,-180.652 645.619,-190.922 656.752,-190.922 665.45,-190.922 670.166,-184.654 670.901,-176.422\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"670.581,-169.139 674.035,-175.994 670.735,-172.636 670.888,-176.132 670.888,-176.132 670.888,-176.132 670.735,-172.636 667.741,-176.27 670.581,-169.139 670.581,-169.139\"/>\n",
         "<text text-anchor=\"start\" x=\"638.752\" y=\"-194.722\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;3 -->\n",
-        "<g id=\"edge15\" class=\"edge\"><title>5&#45;&gt;3</title>\n",
+        "<g id=\"edge7\" class=\"edge\"><title>5&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M468.563,-55.9998C436.943,-63.5203 385.992,-75.9799 377.882,-80.0523 370.659,-83.6799 363.512,-88.4613 356.959,-93.4741\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"351.123,-98.1162 354.641,-91.2935 353.862,-95.9375 356.601,-93.7588 356.601,-93.7588 356.601,-93.7588 353.862,-95.9375 358.562,-96.2241 351.123,-98.1162 351.123,-98.1162\"/>\n",
         "<text text-anchor=\"start\" x=\"390.882\" y=\"-83.8523\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;4 -->\n",
-        "<g id=\"edge16\" class=\"edge\"><title>5&#45;&gt;4</title>\n",
+        "<g id=\"edge8\" class=\"edge\"><title>5&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M518.449,-63.6032C546.894,-80.6845 595.826,-110.067 626.945,-128.754\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"633.301,-132.57 625.678,-131.667 630.3,-130.769 627.3,-128.967 627.3,-128.967 627.3,-128.967 630.3,-130.769 628.921,-126.266 633.301,-132.57 633.301,-132.57\"/>\n",
         "<text text-anchor=\"start\" x=\"545.882\" y=\"-121.852\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;5 -->\n",
-        "<g id=\"edge17\" class=\"edge\"><title>5&#45;&gt;5</title>\n",
+        "<g id=\"edge9\" class=\"edge\"><title>5&#45;&gt;5</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M480.048,-72.6777C477.766,-84.3767 482.71,-94.9224 494.882,-94.9224 504.487,-94.9224 509.591,-88.3565 510.196,-79.8389\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"509.717,-72.6777 513.327,-79.4515 509.951,-76.1699 510.184,-79.662 510.184,-79.662 510.184,-79.662 509.951,-76.1699 507.042,-79.8725 509.717,-72.6777 509.717,-72.6777\"/>\n",
         "<text text-anchor=\"start\" x=\"463.882\" y=\"-98.7224\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;3 -->\n",
-        "<g id=\"edge5\" class=\"edge\"><title>1&#45;&gt;3</title>\n",
+        "<g id=\"edge10\" class=\"edge\"><title>1&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M213.204,-162.1C231.704,-155.304 262.587,-143.958 287.203,-134.916\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"293.964,-132.432 288.479,-137.803 290.678,-133.639 287.393,-134.846 287.393,-134.846 287.393,-134.846 290.678,-133.639 286.307,-131.889 293.964,-132.432 293.964,-132.432\"/>\n",
         "<text text-anchor=\"start\" x=\"234\" y=\"-157.852\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;4 -->\n",
-        "<g id=\"edge6\" class=\"edge\"><title>1&#45;&gt;4</title>\n",
+        "<g id=\"edge11\" class=\"edge\"><title>1&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M212.646,-174.976C229.77,-182.145 258.226,-192.87 284,-197.052 335.122,-205.348 508.639,-190.114 527.882,-187.052 565.995,-180.988 575.403,-177.647 611.882,-165.052 616.31,-163.524 620.918,-161.746 625.411,-159.902\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"631.877,-157.177 626.651,-162.798 628.652,-158.536 625.427,-159.896 625.427,-159.896 625.427,-159.896 628.652,-158.536 624.203,-156.993 631.877,-157.177 631.877,-157.177\"/>\n",
         "<text text-anchor=\"start\" x=\"392.882\" y=\"-201.852\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;3 -->\n",
-        "<g id=\"edge7\" class=\"edge\"><title>2&#45;&gt;3</title>\n",
+        "<g id=\"edge12\" class=\"edge\"><title>2&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M212.998,-60.9891C228.833,-67.077 253.595,-77.1719 274,-88.0523 279.804,-91.1472 285.807,-94.6948 291.565,-98.2903\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"297.698,-102.192 290.101,-101.092 294.745,-100.313 291.792,-98.4343 291.792,-98.4343 291.792,-98.4343 294.745,-100.313 293.482,-95.7765 297.698,-102.192 297.698,-102.192\"/>\n",
         "<text text-anchor=\"start\" x=\"234\" y=\"-91.8523\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;4 -->\n",
-        "<g id=\"edge8\" class=\"edge\"><title>2&#45;&gt;4</title>\n",
+        "<g id=\"edge13\" class=\"edge\"><title>2&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M213.003,-48.2172C261.709,-28.4252 411.887,25.1015 527.882,-14.0523 572.352,-29.0629 580.016,-43.5938 611.882,-78.0523 622.442,-89.4709 632.073,-103.73 639.603,-116.237\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"643.343,-122.594 637.078,-118.158 641.568,-119.578 639.793,-116.561 639.793,-116.561 639.793,-116.561 641.568,-119.578 642.508,-114.963 643.343,-122.594 643.343,-122.594\"/>\n",
         "<text text-anchor=\"start\" x=\"377.882\" y=\"-7.85232\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;5 -->\n",
-        "<g id=\"edge9\" class=\"edge\"><title>2&#45;&gt;5</title>\n",
+        "<g id=\"edge14\" class=\"edge\"><title>2&#45;&gt;5</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M214.245,-54.7619C262.051,-53.9568 396.902,-51.6856 460.236,-50.619\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"467.595,-50.495 460.649,-53.7626 464.095,-50.554 460.596,-50.613 460.596,-50.613 460.596,-50.613 464.095,-50.554 460.543,-47.4635 467.595,-50.495 467.595,-50.495\"/>\n",
         "<text text-anchor=\"start\" x=\"294.941\" y=\"-57.8523\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
@@ -2905,7 +2904,7 @@
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f734006f6c0> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd270264870> >"
        ]
       }
      ],
@@ -3035,7 +3034,7 @@
         "<polygon fill=\"black\" stroke=\"black\" points=\"37.8616,-219 30.8617,-222.15 34.3616,-219 30.8616,-219 30.8616,-219 30.8616,-219 34.3616,-219 30.8616,-215.85 37.8616,-219 37.8616,-219\"/>\n",
         "</g>\n",
         "<!-- 7&#45;&gt;7 -->\n",
-        "<g id=\"edge31\" class=\"edge\"><title>7&#45;&gt;7</title>\n",
+        "<g id=\"edge14\" class=\"edge\"><title>7&#45;&gt;7</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M56.6704,-244.821C56.2072,-255.178 58.9404,-263.87 64.8701,-263.87 69.3173,-263.87 71.9666,-258.981 72.8178,-252.167\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"73.0697,-244.821 75.9779,-251.925 72.9497,-248.319 72.8297,-251.817 72.8297,-251.817 72.8297,-251.817 72.9497,-248.319 69.6816,-251.709 73.0697,-244.821 73.0697,-244.821\"/>\n",
         "<text text-anchor=\"start\" x=\"44.8701\" y=\"-267.67\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
@@ -3048,7 +3047,7 @@
         "<text text-anchor=\"start\" x=\"953.304\" y=\"-124.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#b276b2\">\u2778</text>\n",
         "</g>\n",
         "<!-- 7&#45;&gt;4 -->\n",
-        "<g id=\"edge29\" class=\"edge\"><title>7&#45;&gt;4</title>\n",
+        "<g id=\"edge12\" class=\"edge\"><title>7&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M71.4782,-192.583C85.5575,-134.336 128.171,-0 221.74,-0 221.74,-0 221.74,-0 839.421,-0 889.962,-0 922.321,-56.3742 938.892,-96.2636\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"941.61,-103.007 936.071,-97.6919 940.301,-99.7606 938.993,-96.5144 938.993,-96.5144 938.993,-96.5144 940.301,-99.7606 941.914,-95.3368 941.61,-103.007 941.61,-103.007\"/>\n",
         "<text text-anchor=\"start\" x=\"540.98\" y=\"-3.8\" font-family=\"Lato\" font-size=\"14.00\">c</text>\n",
@@ -3060,28 +3059,28 @@
         "<text text-anchor=\"start\" x=\"376.61\" y=\"-221.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 7&#45;&gt;2 -->\n",
-        "<g id=\"edge28\" class=\"edge\"><title>7&#45;&gt;2</title>\n",
+        "<g id=\"edge11\" class=\"edge\"><title>7&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M91.8721,-220.146C149.269,-222.675 286.739,-228.732 350.318,-231.533\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"357.695,-231.858 350.563,-234.697 354.198,-231.704 350.701,-231.55 350.701,-231.55 350.701,-231.55 354.198,-231.704 350.84,-228.403 357.695,-231.858 357.695,-231.858\"/>\n",
         "<text text-anchor=\"start\" x=\"189.74\" y=\"-231.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 6 -->\n",
-        "<g id=\"node9\" class=\"node\"><title>6</title>\n",
+        "<g id=\"node8\" class=\"node\"><title>6</title>\n",
         "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"222.74\" cy=\"-305\" rx=\"26.7407\" ry=\"26.7407\"/>\n",
         "<text text-anchor=\"start\" x=\"218.24\" y=\"-308.8\" font-family=\"Lato\" font-size=\"14.00\">6</text>\n",
         "<text text-anchor=\"start\" x=\"214.74\" y=\"-293.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#b276b2\">\u2778</text>\n",
         "</g>\n",
         "<!-- 7&#45;&gt;6 -->\n",
-        "<g id=\"edge30\" class=\"edge\"><title>7&#45;&gt;6</title>\n",
+        "<g id=\"edge13\" class=\"edge\"><title>7&#45;&gt;6</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M76.0877,-243.444C83.3639,-257.804 94.553,-275.04 109.74,-285 133.091,-300.313 164.809,-304.813 188.53,-305.772\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"195.617,-305.964 188.534,-308.923 192.118,-305.869 188.62,-305.774 188.62,-305.774 188.62,-305.774 192.118,-305.869 188.705,-302.625 195.617,-305.964 195.617,-305.964\"/>\n",
         "<text text-anchor=\"start\" x=\"109.74\" y=\"-307.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 4&#45;&gt;4 -->\n",
-        "<g id=\"edge18\" class=\"edge\"><title>4&#45;&gt;4</title>\n",
+        "<g id=\"edge2\" class=\"edge\"><title>4&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M942.804,-167.463C942.804,-178.284 946.304,-186.941 953.304,-186.941 958.663,-186.941 961.971,-181.867 963.227,-174.632\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"963.804,-167.463 966.382,-174.693 963.523,-170.952 963.242,-174.441 963.242,-174.441 963.242,-174.441 963.523,-170.952 960.102,-174.188 963.804,-167.463 963.804,-167.463\"/>\n",
-        "<text text-anchor=\"middle\" x=\"953.304\" y=\"-190.741\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
+        "<text text-anchor=\"start\" x=\"948.804\" y=\"-190.741\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- 3 -->\n",
         "<g id=\"node4\" class=\"node\"><title>3</title>\n",
@@ -3091,13 +3090,13 @@
         "<text text-anchor=\"start\" x=\"838.421\" y=\"-243.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#b276b2\">\u2778</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;4 -->\n",
-        "<g id=\"edge17\" class=\"edge\"><title>3&#45;&gt;4</title>\n",
+        "<g id=\"edge4\" class=\"edge\"><title>3&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M862.537,-229.631C880.419,-210.781 905.254,-184.6 924.269,-164.554\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"929.219,-159.336 926.687,-166.582 926.81,-161.875 924.401,-164.415 924.401,-164.415 924.401,-164.415 926.81,-161.875 922.116,-162.247 929.219,-159.336 929.219,-159.336\"/>\n",
         "<text text-anchor=\"start\" x=\"890.362\" y=\"-202.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;3 -->\n",
-        "<g id=\"edge16\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
+        "<g id=\"edge3\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M827.921,-286.463C827.921,-297.284 831.421,-305.941 838.421,-305.941 843.781,-305.941 847.088,-300.867 848.345,-293.632\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"848.921,-286.463 851.5,-293.693 848.641,-289.952 848.36,-293.441 848.36,-293.441 848.36,-293.441 848.641,-289.952 845.22,-293.188 848.921,-286.463 848.921,-286.463\"/>\n",
         "<text text-anchor=\"start\" x=\"834.921\" y=\"-309.741\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
@@ -3109,19 +3108,19 @@
         "<text text-anchor=\"start\" x=\"692.48\" y=\"-183.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;4 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>0&#45;&gt;4</title>\n",
+        "<g id=\"edge7\" class=\"edge\"><title>0&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M726.911,-188.917C770.803,-178.417 861.061,-156.826 913.059,-144.388\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"920.133,-142.696 914.058,-147.388 916.729,-143.51 913.325,-144.324 913.325,-144.324 913.325,-144.324 916.729,-143.51 912.592,-141.261 920.133,-142.696 920.133,-142.696\"/>\n",
         "<text text-anchor=\"start\" x=\"832.921\" y=\"-175.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;3 -->\n",
-        "<g id=\"edge3\" class=\"edge\"><title>0&#45;&gt;3</title>\n",
+        "<g id=\"edge6\" class=\"edge\"><title>0&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M725.471,-205.412C746.233,-214.423 776.59,-227.599 800.456,-237.957\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"807.002,-240.798 799.327,-240.9 803.791,-239.404 800.581,-238.011 800.581,-238.011 800.581,-238.011 803.791,-239.404 801.835,-235.121 807.002,-240.798 807.002,-240.798\"/>\n",
         "<text text-anchor=\"start\" x=\"749.48\" y=\"-235.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;0 -->\n",
-        "<g id=\"edge2\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
+        "<g id=\"edge5\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M688.35,-219.005C687.027,-230.141 691.07,-239.87 700.48,-239.87 707.832,-239.87 711.908,-233.932 712.709,-226.024\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"712.611,-219.005 715.858,-225.96 712.659,-222.504 712.708,-226.004 712.708,-226.004 712.708,-226.004 712.659,-222.504 709.559,-226.048 712.611,-219.005 712.611,-219.005\"/>\n",
         "<text text-anchor=\"start\" x=\"683.48\" y=\"-243.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b</text>\n",
@@ -3133,136 +3132,136 @@
         "<text text-anchor=\"start\" x=\"692.48\" y=\"-364.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#b276b2\">\u2778</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;4 -->\n",
-        "<g id=\"edge20\" class=\"edge\"><title>5&#45;&gt;4</title>\n",
+        "<g id=\"edge9\" class=\"edge\"><title>5&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M727.515,-377.74C766.507,-378.815 839.814,-374.655 880.362,-333 922.411,-289.804 940.136,-220.153 947.429,-176.019\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"948.552,-168.894 950.573,-176.3 948.007,-172.352 947.462,-175.809 947.462,-175.809 947.462,-175.809 948.007,-172.352 944.35,-175.318 948.552,-168.894 948.552,-168.894\"/>\n",
         "<text text-anchor=\"start\" x=\"832.921\" y=\"-375.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;3 -->\n",
-        "<g id=\"edge19\" class=\"edge\"><title>5&#45;&gt;3</title>\n",
+        "<g id=\"edge8\" class=\"edge\"><title>5&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M725.442,-365.273C747.026,-355.314 776.803,-340.747 786.48,-332 799.383,-320.338 810.434,-304.711 818.912,-290.507\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"822.624,-284.101 821.84,-291.737 820.87,-287.129 819.115,-290.158 819.115,-290.158 819.115,-290.158 820.87,-287.129 816.389,-288.579 822.624,-284.101 822.624,-284.101\"/>\n",
         "<text text-anchor=\"start\" x=\"749.48\" y=\"-356.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;5 -->\n",
-        "<g id=\"edge21\" class=\"edge\"><title>5&#45;&gt;5</title>\n",
+        "<g id=\"edge10\" class=\"edge\"><title>5&#45;&gt;5</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M688.35,-400.005C687.027,-411.141 691.07,-420.87 700.48,-420.87 707.832,-420.87 711.908,-414.932 712.709,-407.024\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"712.611,-400.005 715.858,-406.96 712.659,-403.504 712.708,-407.004 712.708,-407.004 712.708,-407.004 712.659,-403.504 709.559,-407.048 712.611,-400.005 712.611,-400.005\"/>\n",
         "<text text-anchor=\"start\" x=\"683.48\" y=\"-424.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;7 -->\n",
-        "<g id=\"edge15\" class=\"edge\"><title>2&#45;&gt;7</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M358.349,-226.562C332.707,-220.382 291.764,-211.488 255.74,-208 200.897,-202.689 136.874,-208.976 98.9438,-213.997\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"91.716,-214.981 98.2273,-210.916 95.184,-214.509 98.652,-214.037 98.652,-214.037 98.652,-214.037 95.184,-214.509 99.0768,-217.158 91.716,-214.981 91.716,-214.981\"/>\n",
-        "<text text-anchor=\"start\" x=\"202.74\" y=\"-211.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
+        "<g id=\"edge19\" class=\"edge\"><title>2&#45;&gt;7</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M358.384,-226.048C332.769,-219.375 291.846,-209.77 255.74,-206 200.748,-200.257 136.518,-207.578 98.6266,-213.336\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"91.41,-214.463 97.8403,-210.271 94.8681,-213.923 98.3262,-213.383 98.3262,-213.383 98.3262,-213.383 94.8681,-213.923 98.8121,-216.495 91.41,-214.463 91.41,-214.463\"/>\n",
+        "<text text-anchor=\"start\" x=\"202.74\" y=\"-209.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;4 -->\n",
-        "<g id=\"edge14\" class=\"edge\"><title>2&#45;&gt;4</title>\n",
+        "<g id=\"edge18\" class=\"edge\"><title>2&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M393.7,-207.391C411.658,-156.176 459.992,-46 543.48,-46 543.48,-46 543.48,-46 839.421,-46 876.544,-46 908.638,-76.0486 929.013,-101.226\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"933.432,-106.84 926.627,-103.288 931.268,-104.09 929.103,-101.34 929.103,-101.34 929.103,-101.34 931.268,-104.09 931.578,-99.3911 933.432,-106.84 933.432,-106.84\"/>\n",
         "<text text-anchor=\"start\" x=\"682.48\" y=\"-49.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;3 -->\n",
-        "<g id=\"edge13\" class=\"edge\"><title>2&#45;&gt;3</title>\n",
+        "<g id=\"edge17\" class=\"edge\"><title>2&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M409.904,-242.508C416.194,-244.636 423.018,-246.657 429.48,-248 562.836,-275.71 599.419,-275.621 735.35,-267 755.811,-265.702 778.44,-262.955 797.181,-260.32\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"804.425,-259.279 797.944,-263.392 800.961,-259.777 797.496,-260.274 797.496,-260.274 797.496,-260.274 800.961,-259.777 797.049,-257.156 804.425,-259.279 804.425,-259.279\"/>\n",
         "<text text-anchor=\"start\" x=\"606.48\" y=\"-276.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;2 -->\n",
-        "<g id=\"edge12\" class=\"edge\"><title>2&#45;&gt;2</title>\n",
+        "<g id=\"edge16\" class=\"edge\"><title>2&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M370.781,-256.087C368.868,-267.6 373.477,-277.87 384.61,-277.87 393.308,-277.87 398.024,-271.602 398.758,-263.369\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"398.439,-256.087 401.893,-262.942 398.593,-259.583 398.746,-263.08 398.746,-263.08 398.746,-263.08 398.593,-259.583 395.599,-263.218 398.439,-256.087 398.439,-256.087\"/>\n",
         "<text text-anchor=\"start\" x=\"351.61\" y=\"-281.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 1 -->\n",
-        "<g id=\"node8\" class=\"node\"><title>1</title>\n",
+        "<g id=\"node9\" class=\"node\"><title>1</title>\n",
         "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"544.48\" cy=\"-185\" rx=\"26.7407\" ry=\"26.7407\"/>\n",
         "<text text-anchor=\"start\" x=\"539.98\" y=\"-188.8\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "<text text-anchor=\"start\" x=\"536.48\" y=\"-173.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;1 -->\n",
-        "<g id=\"edge11\" class=\"edge\"><title>2&#45;&gt;1</title>\n",
+        "<g id=\"edge15\" class=\"edge\"><title>2&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M411.628,-231.237C434.35,-229.061 467.915,-224.292 495.48,-214 502.321,-211.446 509.273,-207.899 515.685,-204.161\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"521.892,-200.388 517.546,-206.716 518.901,-202.206 515.91,-204.024 515.91,-204.024 515.91,-204.024 518.901,-202.206 514.274,-201.332 521.892,-200.388 521.892,-200.388\"/>\n",
         "<text text-anchor=\"start\" x=\"431.48\" y=\"-232.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
-        "<!-- 1&#45;&gt;7 -->\n",
-        "<g id=\"edge10\" class=\"edge\"><title>1&#45;&gt;7</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M517.587,-183.085C510.429,-182.636 502.657,-182.224 495.48,-182 466.161,-181.085 458.798,-181.06 429.48,-182 287.111,-186.566 249.308,-175.527 109.74,-204 105.597,-204.845 101.307,-205.975 97.105,-207.237\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"90.1574,-209.46 95.865,-204.327 93.491,-208.393 96.8246,-207.327 96.8246,-207.327 96.8246,-207.327 93.491,-208.393 97.7843,-210.327 90.1574,-209.46 90.1574,-209.46\"/>\n",
-        "<text text-anchor=\"start\" x=\"286.74\" y=\"-187.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
-        "</g>\n",
-        "<!-- 1&#45;&gt;4 -->\n",
-        "<g id=\"edge9\" class=\"edge\"><title>1&#45;&gt;4</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M559.853,-162.77C568.242,-151.796 579.855,-139.536 593.48,-133 699.699,-82.0446 844.795,-107.463 913.368,-124.225\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"920.553,-126.019 912.998,-127.379 917.157,-125.171 913.761,-124.323 913.761,-124.323 913.761,-124.323 917.157,-125.171 914.524,-121.267 920.553,-126.019 920.553,-126.019\"/>\n",
-        "<text text-anchor=\"start\" x=\"749.98\" y=\"-108.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; c</text>\n",
-        "</g>\n",
-        "<!-- 1&#45;&gt;3 -->\n",
-        "<g id=\"edge8\" class=\"edge\"><title>1&#45;&gt;3</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M567.697,-171.029C604.064,-150.066 677.989,-115.516 735.35,-141 754.546,-149.528 789.239,-191.008 812.794,-221.246\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"817.349,-227.13 810.574,-223.523 815.207,-224.363 813.065,-221.595 813.065,-221.595 813.065,-221.595 815.207,-224.363 815.556,-219.667 817.349,-227.13 817.349,-227.13\"/>\n",
-        "<text text-anchor=\"start\" x=\"669.48\" y=\"-144.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; c</text>\n",
-        "</g>\n",
-        "<!-- 1&#45;&gt;0 -->\n",
-        "<g id=\"edge5\" class=\"edge\"><title>1&#45;&gt;0</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M571.604,-186.696C597.679,-188.39 637.841,-190.997 666.188,-192.838\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"673.486,-193.312 666.296,-196.002 669.993,-193.085 666.5,-192.858 666.5,-192.858 666.5,-192.858 669.993,-193.085 666.704,-189.715 673.486,-193.312 673.486,-193.312\"/>\n",
-        "<text text-anchor=\"start\" x=\"593.48\" y=\"-195.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; c</text>\n",
-        "</g>\n",
-        "<!-- 1&#45;&gt;2 -->\n",
-        "<g id=\"edge7\" class=\"edge\"><title>1&#45;&gt;2</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M517.593,-184.321C493.821,-184.579 458.058,-187.228 429.48,-199 422.798,-201.753 416.266,-205.811 410.369,-210.173\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"404.702,-214.6 408.28,-207.808 407.461,-212.445 410.219,-210.29 410.219,-210.29 410.219,-210.29 407.461,-212.445 412.158,-212.773 404.702,-214.6 404.702,-214.6\"/>\n",
-        "<text text-anchor=\"start\" x=\"429.48\" y=\"-202.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
-        "</g>\n",
-        "<!-- 1&#45;&gt;1 -->\n",
-        "<g id=\"edge6\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M530.287,-208.087C528.323,-219.6 533.054,-229.87 544.48,-229.87 553.407,-229.87 558.247,-223.602 559.001,-215.369\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"558.673,-208.087 562.135,-214.938 558.831,-211.583 558.988,-215.079 558.988,-215.079 558.988,-215.079 558.831,-211.583 555.841,-215.221 558.673,-208.087 558.673,-208.087\"/>\n",
-        "<text text-anchor=\"start\" x=\"513.48\" y=\"-233.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
-        "</g>\n",
         "<!-- 6&#45;&gt;7 -->\n",
-        "<g id=\"edge27\" class=\"edge\"><title>6&#45;&gt;7</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M201.09,-288.761C192.357,-282.374 181.875,-275.315 171.74,-270 145.711,-256.35 136.054,-260.091 109.74,-247 104.391,-244.339 98.8781,-241.184 93.6431,-237.969\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"87.6518,-234.192 95.2533,-235.26 90.6126,-236.058 93.5735,-237.925 93.5735,-237.925 93.5735,-237.925 90.6126,-236.058 91.8936,-240.589 87.6518,-234.192 87.6518,-234.192\"/>\n",
-        "<text text-anchor=\"start\" x=\"120.74\" y=\"-273.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
+        "<g id=\"edge31\" class=\"edge\"><title>6&#45;&gt;7</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M202.459,-287.266C193.615,-279.869 182.677,-271.693 171.74,-266 146.175,-252.694 135.904,-259.086 109.74,-247 104.198,-244.44 98.5259,-241.281 93.178,-238.018\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"87.0763,-234.168 94.6773,-235.239 90.0364,-236.036 92.9966,-237.903 92.9966,-237.903 92.9966,-237.903 90.0364,-236.036 91.3158,-240.567 87.0763,-234.168 87.0763,-234.168\"/>\n",
+        "<text text-anchor=\"start\" x=\"120.74\" y=\"-269.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 6&#45;&gt;4 -->\n",
-        "<g id=\"edge24\" class=\"edge\"><title>6&#45;&gt;4</title>\n",
+        "<g id=\"edge28\" class=\"edge\"><title>6&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M234.46,-329.495C255.831,-374.096 308.256,-464 383.61,-464 383.61,-464 383.61,-464 839.421,-464 899.699,-464 934.612,-263.921 947.063,-175.82\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"948.06,-168.663 950.214,-176.03 947.577,-172.129 947.094,-175.596 947.094,-175.596 947.094,-175.596 947.577,-172.129 943.975,-175.161 948.06,-168.663 948.06,-168.663\"/>\n",
         "<text text-anchor=\"start\" x=\"604.48\" y=\"-467.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; c</text>\n",
         "</g>\n",
         "<!-- 6&#45;&gt;3 -->\n",
-        "<g id=\"edge23\" class=\"edge\"><title>6&#45;&gt;3</title>\n",
+        "<g id=\"edge27\" class=\"edge\"><title>6&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M249.412,-309.162C280.928,-313.903 336.051,-321 383.61,-321 383.61,-321 383.61,-321 701.48,-321 740.374,-321 779.677,-298.661 805.948,-279.781\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"811.679,-275.568 807.905,-282.252 808.859,-277.641 806.039,-279.714 806.039,-279.714 806.039,-279.714 808.859,-277.641 804.174,-277.176 811.679,-275.568 811.679,-275.568\"/>\n",
         "<text text-anchor=\"start\" x=\"513.48\" y=\"-324.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; c</text>\n",
         "</g>\n",
         "<!-- 6&#45;&gt;5 -->\n",
-        "<g id=\"edge25\" class=\"edge\"><title>6&#45;&gt;5</title>\n",
+        "<g id=\"edge29\" class=\"edge\"><title>6&#45;&gt;5</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M245.113,-320.686C253.614,-326.137 263.741,-331.706 273.74,-335 413.861,-381.157 592.916,-380.365 666.077,-377.696\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"673.235,-377.417 666.363,-380.838 669.737,-377.553 666.24,-377.69 666.24,-377.69 666.24,-377.69 669.737,-377.553 666.117,-374.542 673.235,-377.417 673.235,-377.417\"/>\n",
         "<text text-anchor=\"start\" x=\"433.48\" y=\"-377.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; c</text>\n",
         "</g>\n",
         "<!-- 6&#45;&gt;2 -->\n",
-        "<g id=\"edge22\" class=\"edge\"><title>6&#45;&gt;2</title>\n",
+        "<g id=\"edge26\" class=\"edge\"><title>6&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M247.674,-294.221C275.775,-281.565 322.431,-260.553 353.104,-246.739\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"359.774,-243.735 354.685,-249.482 356.583,-245.172 353.391,-246.61 353.391,-246.61 353.391,-246.61 356.583,-245.172 352.098,-243.737 359.774,-243.735 359.774,-243.735\"/>\n",
         "<text text-anchor=\"start\" x=\"273.74\" y=\"-285.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 6&#45;&gt;6 -->\n",
-        "<g id=\"edge26\" class=\"edge\"><title>6&#45;&gt;6</title>\n",
+        "<g id=\"edge30\" class=\"edge\"><title>6&#45;&gt;6</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M207.906,-327.625C205.623,-339.324 210.568,-349.87 222.74,-349.87 232.344,-349.87 237.449,-343.304 238.054,-334.787\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"237.575,-327.625 241.185,-334.399 237.808,-331.118 238.042,-334.61 238.042,-334.61 238.042,-334.61 237.808,-331.118 234.899,-334.82 237.575,-327.625 237.575,-327.625\"/>\n",
         "<text text-anchor=\"start\" x=\"191.74\" y=\"-353.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
+        "<!-- 1&#45;&gt;7 -->\n",
+        "<g id=\"edge25\" class=\"edge\"><title>1&#45;&gt;7</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M517.877,-181.201C510.652,-180.292 502.773,-179.454 495.48,-179 466.204,-177.177 458.795,-177.966 429.48,-179 287.095,-184.022 248.737,-170.718 109.74,-202 105.347,-202.989 100.812,-204.34 96.3996,-205.851\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"89.6047,-208.33 95.1014,-202.972 92.8928,-207.131 96.1809,-205.931 96.1809,-205.931 96.1809,-205.931 92.8928,-207.131 97.2604,-208.89 89.6047,-208.33 89.6047,-208.33\"/>\n",
+        "<text text-anchor=\"start\" x=\"286.74\" y=\"-184.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
+        "</g>\n",
+        "<!-- 1&#45;&gt;4 -->\n",
+        "<g id=\"edge24\" class=\"edge\"><title>1&#45;&gt;4</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M559.853,-162.77C568.242,-151.796 579.855,-139.536 593.48,-133 699.699,-82.0446 844.795,-107.463 913.368,-124.225\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"920.553,-126.019 912.998,-127.379 917.157,-125.171 913.761,-124.323 913.761,-124.323 913.761,-124.323 917.157,-125.171 914.524,-121.267 920.553,-126.019 920.553,-126.019\"/>\n",
+        "<text text-anchor=\"start\" x=\"749.98\" y=\"-108.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; c</text>\n",
+        "</g>\n",
+        "<!-- 1&#45;&gt;3 -->\n",
+        "<g id=\"edge23\" class=\"edge\"><title>1&#45;&gt;3</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M567.697,-171.029C604.064,-150.066 677.989,-115.516 735.35,-141 754.546,-149.528 789.239,-191.008 812.794,-221.246\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"817.349,-227.13 810.574,-223.523 815.207,-224.363 813.065,-221.595 813.065,-221.595 813.065,-221.595 815.207,-224.363 815.556,-219.667 817.349,-227.13 817.349,-227.13\"/>\n",
+        "<text text-anchor=\"start\" x=\"669.48\" y=\"-144.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; c</text>\n",
+        "</g>\n",
+        "<!-- 1&#45;&gt;0 -->\n",
+        "<g id=\"edge20\" class=\"edge\"><title>1&#45;&gt;0</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M571.604,-186.696C597.679,-188.39 637.841,-190.997 666.188,-192.838\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"673.486,-193.312 666.296,-196.002 669.993,-193.085 666.5,-192.858 666.5,-192.858 666.5,-192.858 669.993,-193.085 666.704,-189.715 673.486,-193.312 673.486,-193.312\"/>\n",
+        "<text text-anchor=\"start\" x=\"593.48\" y=\"-195.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; c</text>\n",
+        "</g>\n",
+        "<!-- 1&#45;&gt;2 -->\n",
+        "<g id=\"edge22\" class=\"edge\"><title>1&#45;&gt;2</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M517.489,-182.833C493.646,-181.857 457.836,-182.989 429.48,-195 422.092,-198.129 415.056,-202.988 408.868,-208.198\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"403.437,-213.042 406.564,-206.031 406.049,-210.712 408.661,-208.382 408.661,-208.382 408.661,-208.382 406.049,-210.712 410.758,-210.733 403.437,-213.042 403.437,-213.042\"/>\n",
+        "<text text-anchor=\"start\" x=\"429.48\" y=\"-198.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
+        "</g>\n",
+        "<!-- 1&#45;&gt;1 -->\n",
+        "<g id=\"edge21\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M530.287,-208.087C528.323,-219.6 533.054,-229.87 544.48,-229.87 553.407,-229.87 558.247,-223.602 559.001,-215.369\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"558.673,-208.087 562.135,-214.938 558.831,-211.583 558.988,-215.079 558.988,-215.079 558.988,-215.079 558.831,-211.583 555.841,-215.221 558.673,-208.087 558.673,-208.087\"/>\n",
+        "<text text-anchor=\"start\" x=\"513.48\" y=\"-233.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
+        "</g>\n",
         "</g>\n",
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f733338d0f0> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd270281180> >"
        ]
       }
      ],
@@ -3327,7 +3326,7 @@
         "<polygon fill=\"black\" stroke=\"black\" points=\"37.8616,-219 30.8617,-222.15 34.3616,-219 30.8616,-219 30.8616,-219 30.8616,-219 34.3616,-219 30.8616,-215.85 37.8616,-219 37.8616,-219\"/>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;0 -->\n",
-        "<g id=\"edge5\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
+        "<g id=\"edge14\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M56.6704,-244.821C56.2072,-255.178 58.9404,-263.87 64.8701,-263.87 69.3173,-263.87 71.9666,-258.981 72.8178,-252.167\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"73.0697,-244.821 75.9779,-251.925 72.9497,-248.319 72.8297,-251.817 72.8297,-251.817 72.8297,-251.817 72.9497,-248.319 69.6816,-251.709 73.0697,-244.821 73.0697,-244.821\"/>\n",
         "<text text-anchor=\"start\" x=\"44.8701\" y=\"-267.67\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
@@ -3339,7 +3338,7 @@
         "<text text-anchor=\"start\" x=\"924.09\" y=\"-123.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;2 -->\n",
-        "<g id=\"edge3\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
+        "<g id=\"edge12\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M71.4782,-192.583C85.5575,-134.336 128.171,-0 221.74,-0 221.74,-0 221.74,-0 832.35,-0 882.649,-0 910.086,-61.8079 922.572,-101.781\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"924.731,-108.971 919.701,-103.173 923.724,-105.619 922.718,-102.266 922.718,-102.266 922.718,-102.266 923.724,-105.619 925.735,-101.36 924.731,-108.971 924.731,-108.971\"/>\n",
         "<text text-anchor=\"start\" x=\"540.98\" y=\"-3.8\" font-family=\"Lato\" font-size=\"14.00\">c</text>\n",
@@ -3351,28 +3350,28 @@
         "<text text-anchor=\"start\" x=\"376.61\" y=\"-221.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;1 -->\n",
-        "<g id=\"edge2\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
+        "<g id=\"edge11\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M91.8721,-220.146C149.269,-222.675 286.739,-228.732 350.318,-231.533\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"357.695,-231.858 350.563,-234.697 354.198,-231.704 350.701,-231.55 350.701,-231.55 350.701,-231.55 354.198,-231.704 350.84,-228.403 357.695,-231.858 357.695,-231.858\"/>\n",
         "<text text-anchor=\"start\" x=\"189.74\" y=\"-231.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 3 -->\n",
-        "<g id=\"node9\" class=\"node\"><title>3</title>\n",
+        "<g id=\"node8\" class=\"node\"><title>3</title>\n",
         "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"222.74\" cy=\"-305\" rx=\"26.7407\" ry=\"26.7407\"/>\n",
         "<text text-anchor=\"start\" x=\"218.24\" y=\"-308.8\" font-family=\"Lato\" font-size=\"14.00\">3</text>\n",
         "<text text-anchor=\"start\" x=\"214.74\" y=\"-293.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;3 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>0&#45;&gt;3</title>\n",
+        "<g id=\"edge13\" class=\"edge\"><title>0&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M76.0877,-243.444C83.3639,-257.804 94.553,-275.04 109.74,-285 133.091,-300.313 164.809,-304.813 188.53,-305.772\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"195.617,-305.964 188.534,-308.923 192.118,-305.869 188.62,-305.774 188.62,-305.774 188.62,-305.774 192.118,-305.869 188.705,-302.625 195.617,-305.964 195.617,-305.964\"/>\n",
         "<text text-anchor=\"start\" x=\"109.74\" y=\"-307.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;2 -->\n",
-        "<g id=\"edge11\" class=\"edge\"><title>2&#45;&gt;2</title>\n",
+        "<g id=\"edge2\" class=\"edge\"><title>2&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M922.798,-160.37C922.157,-170.924 925.254,-179.87 932.09,-179.87 937.324,-179.87 940.367,-174.626 941.218,-167.431\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"941.383,-160.37 944.368,-167.442 941.301,-163.869 941.219,-167.368 941.219,-167.368 941.219,-167.368 941.301,-163.869 938.07,-167.294 941.383,-160.37 941.383,-160.37\"/>\n",
-        "<text text-anchor=\"middle\" x=\"932.09\" y=\"-183.67\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
+        "<text text-anchor=\"start\" x=\"927.59\" y=\"-183.67\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- 4 -->\n",
         "<g id=\"node4\" class=\"node\"><title>4</title>\n",
@@ -3381,13 +3380,13 @@
         "<text text-anchor=\"start\" x=\"823.35\" y=\"-242.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 4&#45;&gt;2 -->\n",
-        "<g id=\"edge19\" class=\"edge\"><title>4&#45;&gt;2</title>\n",
+        "<g id=\"edge4\" class=\"edge\"><title>4&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M849.1,-233.813C865.768,-213.726 891.414,-182.817 909.579,-160.925\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"914.258,-155.286 912.213,-162.684 912.023,-157.979 909.788,-160.673 909.788,-160.673 909.788,-160.673 912.023,-157.979 907.364,-158.661 914.258,-155.286 914.258,-155.286\"/>\n",
         "<text text-anchor=\"start\" x=\"876.22\" y=\"-202.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "</g>\n",
         "<!-- 4&#45;&gt;4 -->\n",
-        "<g id=\"edge18\" class=\"edge\"><title>4&#45;&gt;4</title>\n",
+        "<g id=\"edge3\" class=\"edge\"><title>4&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M822.058,-279.37C821.417,-289.924 824.514,-298.87 831.35,-298.87 836.584,-298.87 839.626,-293.626 840.477,-286.431\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"840.643,-279.37 843.628,-286.442 840.561,-282.869 840.479,-286.368 840.479,-286.368 840.479,-286.368 840.561,-282.869 837.33,-286.294 840.643,-279.37 840.643,-279.37\"/>\n",
         "<text text-anchor=\"start\" x=\"827.85\" y=\"-302.67\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
@@ -3399,19 +3398,19 @@
         "<text text-anchor=\"start\" x=\"692.48\" y=\"-183.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 7&#45;&gt;2 -->\n",
-        "<g id=\"edge31\" class=\"edge\"><title>7&#45;&gt;2</title>\n",
+        "<g id=\"edge7\" class=\"edge\"><title>7&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M726.93,-188.35C769.022,-177.351 853.052,-155.392 899.097,-143.36\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"905.877,-141.589 899.901,-146.406 902.49,-142.474 899.104,-143.358 899.104,-143.358 899.104,-143.358 902.49,-142.474 898.308,-140.311 905.877,-141.589 905.877,-141.589\"/>\n",
         "<text text-anchor=\"start\" x=\"825.85\" y=\"-173.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "</g>\n",
         "<!-- 7&#45;&gt;4 -->\n",
-        "<g id=\"edge30\" class=\"edge\"><title>7&#45;&gt;4</title>\n",
+        "<g id=\"edge6\" class=\"edge\"><title>7&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M725.117,-205.822C746.148,-215.45 777.03,-229.588 799.904,-240.061\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"806.427,-243.047 798.751,-242.997 803.245,-241.59 800.062,-240.133 800.062,-240.133 800.062,-240.133 803.245,-241.59 801.374,-237.269 806.427,-243.047 806.427,-243.047\"/>\n",
         "<text text-anchor=\"start\" x=\"749.48\" y=\"-237.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b</text>\n",
         "</g>\n",
         "<!-- 7&#45;&gt;7 -->\n",
-        "<g id=\"edge29\" class=\"edge\"><title>7&#45;&gt;7</title>\n",
+        "<g id=\"edge5\" class=\"edge\"><title>7&#45;&gt;7</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M688.35,-219.005C687.027,-230.141 691.07,-239.87 700.48,-239.87 707.832,-239.87 711.908,-233.932 712.709,-226.024\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"712.611,-219.005 715.858,-225.96 712.659,-222.504 712.708,-226.004 712.708,-226.004 712.708,-226.004 712.659,-222.504 709.559,-226.048 712.611,-219.005 712.611,-219.005\"/>\n",
         "<text text-anchor=\"start\" x=\"683.48\" y=\"-243.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b</text>\n",
@@ -3423,136 +3422,136 @@
         "<text text-anchor=\"start\" x=\"692.48\" y=\"-364.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;2 -->\n",
-        "<g id=\"edge21\" class=\"edge\"><title>5&#45;&gt;2</title>\n",
+        "<g id=\"edge9\" class=\"edge\"><title>5&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M727.661,-377.039C744.737,-377.019 767.328,-375.66 786.48,-370 825.298,-358.528 840.237,-357.037 866.22,-326 904.71,-280.023 920.732,-210.108 927.123,-168.842\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"928.173,-161.73 930.267,-169.115 927.662,-165.192 927.151,-168.655 927.151,-168.655 927.151,-168.655 927.662,-165.192 924.034,-168.195 928.173,-161.73 928.173,-161.73\"/>\n",
         "<text text-anchor=\"start\" x=\"825.85\" y=\"-369.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;4 -->\n",
-        "<g id=\"edge20\" class=\"edge\"><title>5&#45;&gt;4</title>\n",
+        "<g id=\"edge8\" class=\"edge\"><title>5&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M725.575,-365.415C747.254,-355.558 777.098,-341.062 786.48,-332 799.974,-318.966 810.498,-300.875 817.853,-285.396\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"820.81,-278.945 820.757,-286.621 819.351,-282.126 817.893,-285.308 817.893,-285.308 817.893,-285.308 819.351,-282.126 815.03,-283.995 820.81,-278.945 820.81,-278.945\"/>\n",
         "<text text-anchor=\"start\" x=\"749.48\" y=\"-356.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;5 -->\n",
-        "<g id=\"edge22\" class=\"edge\"><title>5&#45;&gt;5</title>\n",
+        "<g id=\"edge10\" class=\"edge\"><title>5&#45;&gt;5</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M688.35,-400.005C687.027,-411.141 691.07,-420.87 700.48,-420.87 707.832,-420.87 711.908,-414.932 712.709,-407.024\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"712.611,-400.005 715.858,-406.96 712.659,-403.504 712.708,-407.004 712.708,-407.004 712.708,-407.004 712.659,-403.504 709.559,-407.048 712.611,-400.005 712.611,-400.005\"/>\n",
         "<text text-anchor=\"start\" x=\"683.48\" y=\"-424.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;0 -->\n",
-        "<g id=\"edge10\" class=\"edge\"><title>1&#45;&gt;0</title>\n",
+        "<g id=\"edge19\" class=\"edge\"><title>1&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M358.384,-226.048C332.769,-219.375 291.846,-209.77 255.74,-206 200.748,-200.257 136.518,-207.578 98.6266,-213.336\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"91.41,-214.463 97.8403,-210.271 94.8681,-213.923 98.3262,-213.383 98.3262,-213.383 98.3262,-213.383 94.8681,-213.923 98.8121,-216.495 91.41,-214.463 91.41,-214.463\"/>\n",
         "<text text-anchor=\"start\" x=\"202.74\" y=\"-209.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;2 -->\n",
-        "<g id=\"edge9\" class=\"edge\"><title>1&#45;&gt;2</title>\n",
+        "<g id=\"edge18\" class=\"edge\"><title>1&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M393.7,-207.391C411.658,-156.176 459.992,-46 543.48,-46 543.48,-46 543.48,-46 832.35,-46 868.672,-46 897.653,-79.6376 914.591,-105.554\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"918.43,-111.616 912.024,-107.388 916.558,-108.659 914.685,-105.702 914.685,-105.702 914.685,-105.702 916.558,-108.659 917.347,-104.017 918.43,-111.616 918.43,-111.616\"/>\n",
         "<text text-anchor=\"start\" x=\"682.48\" y=\"-49.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;4 -->\n",
-        "<g id=\"edge8\" class=\"edge\"><title>1&#45;&gt;4</title>\n",
+        "<g id=\"edge17\" class=\"edge\"><title>1&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M409.904,-242.508C416.194,-244.636 423.018,-246.657 429.48,-248 562.836,-275.71 599.461,-276.255 735.35,-267 756.17,-265.582 779.38,-262.436 797.647,-259.593\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"804.642,-258.482 798.223,-262.691 801.186,-259.031 797.729,-259.58 797.729,-259.58 797.729,-259.58 801.186,-259.031 797.235,-256.469 804.642,-258.482 804.642,-258.482\"/>\n",
         "<text text-anchor=\"start\" x=\"606.48\" y=\"-276.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;1 -->\n",
-        "<g id=\"edge7\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
+        "<g id=\"edge16\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M370.781,-256.087C368.868,-267.6 373.477,-277.87 384.61,-277.87 393.308,-277.87 398.024,-271.602 398.758,-263.369\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"398.439,-256.087 401.893,-262.942 398.593,-259.583 398.746,-263.08 398.746,-263.08 398.746,-263.08 398.593,-259.583 395.599,-263.218 398.439,-256.087 398.439,-256.087\"/>\n",
         "<text text-anchor=\"start\" x=\"351.61\" y=\"-281.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 6 -->\n",
-        "<g id=\"node8\" class=\"node\"><title>6</title>\n",
+        "<g id=\"node9\" class=\"node\"><title>6</title>\n",
         "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"544.48\" cy=\"-185\" rx=\"26.7407\" ry=\"26.7407\"/>\n",
         "<text text-anchor=\"start\" x=\"539.98\" y=\"-188.8\" font-family=\"Lato\" font-size=\"14.00\">6</text>\n",
         "<text text-anchor=\"start\" x=\"536.48\" y=\"-173.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;6 -->\n",
-        "<g id=\"edge6\" class=\"edge\"><title>1&#45;&gt;6</title>\n",
+        "<g id=\"edge15\" class=\"edge\"><title>1&#45;&gt;6</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M411.628,-231.237C434.35,-229.061 467.915,-224.292 495.48,-214 502.321,-211.446 509.273,-207.899 515.685,-204.161\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"521.892,-200.388 517.546,-206.716 518.901,-202.206 515.91,-204.024 515.91,-204.024 515.91,-204.024 518.901,-202.206 514.274,-201.332 521.892,-200.388 521.892,-200.388\"/>\n",
         "<text text-anchor=\"start\" x=\"431.48\" y=\"-232.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
-        "<!-- 6&#45;&gt;0 -->\n",
-        "<g id=\"edge28\" class=\"edge\"><title>6&#45;&gt;0</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M517.877,-181.201C510.652,-180.292 502.773,-179.454 495.48,-179 466.204,-177.177 458.795,-177.966 429.48,-179 287.095,-184.022 248.737,-170.718 109.74,-202 105.347,-202.989 100.812,-204.34 96.3996,-205.851\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"89.6047,-208.33 95.1014,-202.972 92.8928,-207.131 96.1809,-205.931 96.1809,-205.931 96.1809,-205.931 92.8928,-207.131 97.2604,-208.89 89.6047,-208.33 89.6047,-208.33\"/>\n",
-        "<text text-anchor=\"start\" x=\"286.74\" y=\"-184.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
-        "</g>\n",
-        "<!-- 6&#45;&gt;2 -->\n",
-        "<g id=\"edge27\" class=\"edge\"><title>6&#45;&gt;2</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M559.853,-162.77C568.242,-151.796 579.855,-139.536 593.48,-133 696.016,-83.8113 837.056,-110.332 899.337,-126.056\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"906.18,-127.821 898.615,-129.123 902.791,-126.947 899.402,-126.073 899.402,-126.073 899.402,-126.073 902.791,-126.947 900.189,-123.022 906.18,-127.821 906.18,-127.821\"/>\n",
-        "<text text-anchor=\"start\" x=\"749.98\" y=\"-110.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; c</text>\n",
-        "</g>\n",
-        "<!-- 6&#45;&gt;4 -->\n",
-        "<g id=\"edge26\" class=\"edge\"><title>6&#45;&gt;4</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M567.508,-170.97C603.918,-149.696 678.297,-114.429 735.35,-141 771.701,-157.93 799.104,-196.373 814.918,-223.71\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"818.497,-230.054 812.314,-225.505 816.777,-227.006 815.057,-223.957 815.057,-223.957 815.057,-223.957 816.777,-227.006 817.801,-222.41 818.497,-230.054 818.497,-230.054\"/>\n",
-        "<text text-anchor=\"start\" x=\"669.48\" y=\"-144.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; c</text>\n",
-        "</g>\n",
-        "<!-- 6&#45;&gt;7 -->\n",
-        "<g id=\"edge23\" class=\"edge\"><title>6&#45;&gt;7</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M571.604,-186.696C597.679,-188.39 637.841,-190.997 666.188,-192.838\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"673.486,-193.312 666.296,-196.002 669.993,-193.085 666.5,-192.858 666.5,-192.858 666.5,-192.858 669.993,-193.085 666.704,-189.715 673.486,-193.312 673.486,-193.312\"/>\n",
-        "<text text-anchor=\"start\" x=\"593.48\" y=\"-195.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; c</text>\n",
-        "</g>\n",
-        "<!-- 6&#45;&gt;1 -->\n",
-        "<g id=\"edge25\" class=\"edge\"><title>6&#45;&gt;1</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M517.489,-182.833C493.646,-181.857 457.836,-182.989 429.48,-195 422.092,-198.129 415.056,-202.988 408.868,-208.198\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"403.437,-213.042 406.564,-206.031 406.049,-210.712 408.661,-208.382 408.661,-208.382 408.661,-208.382 406.049,-210.712 410.758,-210.733 403.437,-213.042 403.437,-213.042\"/>\n",
-        "<text text-anchor=\"start\" x=\"429.48\" y=\"-198.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
-        "</g>\n",
-        "<!-- 6&#45;&gt;6 -->\n",
-        "<g id=\"edge24\" class=\"edge\"><title>6&#45;&gt;6</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M530.287,-208.087C528.323,-219.6 533.054,-229.87 544.48,-229.87 553.407,-229.87 558.247,-223.602 559.001,-215.369\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"558.673,-208.087 562.135,-214.938 558.831,-211.583 558.988,-215.079 558.988,-215.079 558.988,-215.079 558.831,-211.583 555.841,-215.221 558.673,-208.087 558.673,-208.087\"/>\n",
-        "<text text-anchor=\"start\" x=\"513.48\" y=\"-233.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
-        "</g>\n",
         "<!-- 3&#45;&gt;0 -->\n",
-        "<g id=\"edge17\" class=\"edge\"><title>3&#45;&gt;0</title>\n",
+        "<g id=\"edge31\" class=\"edge\"><title>3&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M202.459,-287.266C193.615,-279.869 182.677,-271.693 171.74,-266 146.175,-252.694 135.904,-259.086 109.74,-247 104.198,-244.44 98.5259,-241.281 93.178,-238.018\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"87.0763,-234.168 94.6773,-235.239 90.0364,-236.036 92.9966,-237.903 92.9966,-237.903 92.9966,-237.903 90.0364,-236.036 91.3158,-240.567 87.0763,-234.168 87.0763,-234.168\"/>\n",
         "<text text-anchor=\"start\" x=\"120.74\" y=\"-269.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;2 -->\n",
-        "<g id=\"edge14\" class=\"edge\"><title>3&#45;&gt;2</title>\n",
+        "<g id=\"edge28\" class=\"edge\"><title>3&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M234.46,-329.495C255.831,-374.096 308.256,-464 383.61,-464 383.61,-464 383.61,-464 832.35,-464 893.483,-464 920.029,-252.978 928.176,-168.94\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"928.842,-161.923 931.317,-169.19 928.511,-165.408 928.181,-168.892 928.181,-168.892 928.181,-168.892 928.511,-165.408 925.045,-168.594 928.842,-161.923 928.842,-161.923\"/>\n",
         "<text text-anchor=\"start\" x=\"604.48\" y=\"-467.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; c</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;4 -->\n",
-        "<g id=\"edge13\" class=\"edge\"><title>3&#45;&gt;4</title>\n",
+        "<g id=\"edge27\" class=\"edge\"><title>3&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M249.412,-309.162C280.928,-313.903 336.051,-321 383.61,-321 383.61,-321 383.61,-321 701.48,-321 741.166,-321 780.763,-295.677 805.38,-276.168\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"811.005,-271.603 807.554,-278.46 808.287,-273.809 805.569,-276.014 805.569,-276.014 805.569,-276.014 808.287,-273.809 803.584,-273.568 811.005,-271.603 811.005,-271.603\"/>\n",
         "<text text-anchor=\"start\" x=\"513.48\" y=\"-324.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; c</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;5 -->\n",
-        "<g id=\"edge15\" class=\"edge\"><title>3&#45;&gt;5</title>\n",
+        "<g id=\"edge29\" class=\"edge\"><title>3&#45;&gt;5</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M245.113,-320.686C253.614,-326.137 263.741,-331.706 273.74,-335 413.861,-381.157 592.916,-380.365 666.077,-377.696\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"673.235,-377.417 666.363,-380.838 669.737,-377.553 666.24,-377.69 666.24,-377.69 666.24,-377.69 669.737,-377.553 666.117,-374.542 673.235,-377.417 673.235,-377.417\"/>\n",
         "<text text-anchor=\"start\" x=\"433.48\" y=\"-377.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; c</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;1 -->\n",
-        "<g id=\"edge12\" class=\"edge\"><title>3&#45;&gt;1</title>\n",
+        "<g id=\"edge26\" class=\"edge\"><title>3&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M247.674,-294.221C275.775,-281.565 322.431,-260.553 353.104,-246.739\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"359.774,-243.735 354.685,-249.482 356.583,-245.172 353.391,-246.61 353.391,-246.61 353.391,-246.61 356.583,-245.172 352.098,-243.737 359.774,-243.735 359.774,-243.735\"/>\n",
         "<text text-anchor=\"start\" x=\"273.74\" y=\"-285.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;3 -->\n",
-        "<g id=\"edge16\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
+        "<g id=\"edge30\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M207.906,-327.625C205.623,-339.324 210.568,-349.87 222.74,-349.87 232.344,-349.87 237.449,-343.304 238.054,-334.787\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"237.575,-327.625 241.185,-334.399 237.808,-331.118 238.042,-334.61 238.042,-334.61 238.042,-334.61 237.808,-331.118 234.899,-334.82 237.575,-327.625 237.575,-327.625\"/>\n",
         "<text text-anchor=\"start\" x=\"191.74\" y=\"-353.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
+        "<!-- 6&#45;&gt;0 -->\n",
+        "<g id=\"edge25\" class=\"edge\"><title>6&#45;&gt;0</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M517.877,-181.201C510.652,-180.292 502.773,-179.454 495.48,-179 466.204,-177.177 458.795,-177.966 429.48,-179 287.095,-184.022 248.737,-170.718 109.74,-202 105.347,-202.989 100.812,-204.34 96.3996,-205.851\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"89.6047,-208.33 95.1014,-202.972 92.8928,-207.131 96.1809,-205.931 96.1809,-205.931 96.1809,-205.931 92.8928,-207.131 97.2604,-208.89 89.6047,-208.33 89.6047,-208.33\"/>\n",
+        "<text text-anchor=\"start\" x=\"286.74\" y=\"-184.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
+        "</g>\n",
+        "<!-- 6&#45;&gt;2 -->\n",
+        "<g id=\"edge24\" class=\"edge\"><title>6&#45;&gt;2</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M559.853,-162.77C568.242,-151.796 579.855,-139.536 593.48,-133 696.016,-83.8113 837.056,-110.332 899.337,-126.056\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"906.18,-127.821 898.615,-129.123 902.791,-126.947 899.402,-126.073 899.402,-126.073 899.402,-126.073 902.791,-126.947 900.189,-123.022 906.18,-127.821 906.18,-127.821\"/>\n",
+        "<text text-anchor=\"start\" x=\"749.98\" y=\"-110.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; c</text>\n",
+        "</g>\n",
+        "<!-- 6&#45;&gt;4 -->\n",
+        "<g id=\"edge23\" class=\"edge\"><title>6&#45;&gt;4</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M567.508,-170.97C603.918,-149.696 678.297,-114.429 735.35,-141 771.701,-157.93 799.104,-196.373 814.918,-223.71\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"818.497,-230.054 812.314,-225.505 816.777,-227.006 815.057,-223.957 815.057,-223.957 815.057,-223.957 816.777,-227.006 817.801,-222.41 818.497,-230.054 818.497,-230.054\"/>\n",
+        "<text text-anchor=\"start\" x=\"669.48\" y=\"-144.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; c</text>\n",
+        "</g>\n",
+        "<!-- 6&#45;&gt;7 -->\n",
+        "<g id=\"edge20\" class=\"edge\"><title>6&#45;&gt;7</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M571.604,-186.696C597.679,-188.39 637.841,-190.997 666.188,-192.838\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"673.486,-193.312 666.296,-196.002 669.993,-193.085 666.5,-192.858 666.5,-192.858 666.5,-192.858 669.993,-193.085 666.704,-189.715 673.486,-193.312 673.486,-193.312\"/>\n",
+        "<text text-anchor=\"start\" x=\"593.48\" y=\"-195.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; c</text>\n",
+        "</g>\n",
+        "<!-- 6&#45;&gt;1 -->\n",
+        "<g id=\"edge22\" class=\"edge\"><title>6&#45;&gt;1</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M517.489,-182.833C493.646,-181.857 457.836,-182.989 429.48,-195 422.092,-198.129 415.056,-202.988 408.868,-208.198\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"403.437,-213.042 406.564,-206.031 406.049,-210.712 408.661,-208.382 408.661,-208.382 408.661,-208.382 406.049,-210.712 410.758,-210.733 403.437,-213.042 403.437,-213.042\"/>\n",
+        "<text text-anchor=\"start\" x=\"429.48\" y=\"-198.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
+        "</g>\n",
+        "<!-- 6&#45;&gt;6 -->\n",
+        "<g id=\"edge21\" class=\"edge\"><title>6&#45;&gt;6</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M530.287,-208.087C528.323,-219.6 533.054,-229.87 544.48,-229.87 553.407,-229.87 558.247,-223.602 559.001,-215.369\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"558.673,-208.087 562.135,-214.938 558.831,-211.583 558.988,-215.079 558.988,-215.079 558.988,-215.079 558.831,-211.583 555.841,-215.221 558.673,-208.087 558.673,-208.087\"/>\n",
+        "<text text-anchor=\"start\" x=\"513.48\" y=\"-233.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
+        "</g>\n",
         "</g>\n",
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f733338d090> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd270281120> >"
        ]
       },
       {
@@ -3593,7 +3592,7 @@
         "<polygon fill=\"black\" stroke=\"black\" points=\"37.8616,-250 30.8617,-253.15 34.3616,-250 30.8616,-250 30.8616,-250 30.8616,-250 34.3616,-250 30.8616,-246.85 37.8616,-250 37.8616,-250\"/>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;0 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
+        "<g id=\"edge5\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M56.6704,-275.821C56.2072,-286.178 58.9404,-294.87 64.8701,-294.87 69.3173,-294.87 71.9666,-289.981 72.8178,-283.167\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"73.0697,-275.821 75.9779,-282.925 72.9497,-279.319 72.8297,-282.817 72.8297,-282.817 72.8297,-282.817 72.9497,-279.319 69.6816,-282.709 73.0697,-275.821 73.0697,-275.821\"/>\n",
         "<text text-anchor=\"start\" x=\"44.8701\" y=\"-298.67\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
@@ -3605,22 +3604,22 @@
         "<text text-anchor=\"start\" x=\"376.61\" y=\"-230.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;1 -->\n",
-        "<g id=\"edge2\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
+        "<g id=\"edge3\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M91.3607,-255.072C116.313,-259.762 155.464,-266.387 189.74,-269 256.503,-274.09 274.496,-270.044 339.74,-255 343.707,-254.085 347.844,-253.016 351.924,-251.89\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"358.696,-249.96 352.827,-254.908 355.33,-250.92 351.964,-251.879 351.964,-251.879 351.964,-251.879 355.33,-250.92 351.1,-248.849 358.696,-249.96 358.696,-249.96\"/>\n",
         "<text text-anchor=\"start\" x=\"189.74\" y=\"-274.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2 -->\n",
-        "<g id=\"node6\" class=\"node\"><title>2</title>\n",
+        "<g id=\"node5\" class=\"node\"><title>2</title>\n",
         "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"222.74\" cy=\"-154\" rx=\"26.7407\" ry=\"26.7407\"/>\n",
         "<text text-anchor=\"start\" x=\"218.24\" y=\"-157.8\" font-family=\"Lato\" font-size=\"14.00\">2</text>\n",
         "<text text-anchor=\"start\" x=\"214.74\" y=\"-142.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;2 -->\n",
-        "<g id=\"edge3\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M88.2024,-236.246C115.866,-219.208 163.031,-190.159 193.267,-171.536\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"199.449,-167.729 195.141,-174.082 196.469,-169.564 193.489,-171.4 193.489,-171.4 193.489,-171.4 196.469,-169.564 191.837,-168.718 199.449,-167.729 199.449,-167.729\"/>\n",
-        "<text text-anchor=\"start\" x=\"109.74\" y=\"-224.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
+        "<g id=\"edge4\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M75.999,-225.525C83.3001,-210.807 94.5478,-192.878 109.74,-182 132.779,-165.504 164.529,-158.688 188.342,-155.892\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"195.459,-155.147 188.825,-159.009 191.978,-155.511 188.497,-155.876 188.497,-155.876 188.497,-155.876 191.978,-155.511 188.169,-152.743 195.459,-155.147 195.459,-155.147\"/>\n",
+        "<text text-anchor=\"start\" x=\"109.74\" y=\"-185.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 3 -->\n",
         "<g id=\"node3\" class=\"node\"><title>3</title>\n",
@@ -3629,82 +3628,82 @@
         "<text text-anchor=\"start\" x=\"376.61\" y=\"-31.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;3 -->\n",
-        "<g id=\"edge12\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
+        "<g id=\"edge2\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M370.781,-66.0865C368.868,-77.6001 373.477,-87.8701 384.61,-87.8701 393.308,-87.8701 398.024,-81.6018 398.758,-73.3693\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"398.439,-66.0865 401.893,-72.9418 398.593,-69.5832 398.746,-73.0798 398.746,-73.0798 398.746,-73.0798 398.593,-69.5832 395.599,-73.2178 398.439,-66.0865 398.439,-66.0865\"/>\n",
         "<text text-anchor=\"start\" x=\"367.61\" y=\"-91.6701\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;0 -->\n",
-        "<g id=\"edge7\" class=\"edge\"><title>1&#45;&gt;0</title>\n",
+        "<g id=\"edge8\" class=\"edge\"><title>1&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M357.695,-242.652C300.261,-244.099 162.352,-247.571 98.8711,-249.169\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"91.8721,-249.345 98.7905,-246.02 95.371,-249.257 98.8698,-249.169 98.8698,-249.169 98.8698,-249.169 95.371,-249.257 98.9492,-252.318 91.8721,-249.345 91.8721,-249.345\"/>\n",
         "<text text-anchor=\"start\" x=\"202.74\" y=\"-249.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;1 -->\n",
-        "<g id=\"edge6\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
+        "<g id=\"edge7\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M370.781,-265.087C368.868,-276.6 373.477,-286.87 384.61,-286.87 393.308,-286.87 398.024,-280.602 398.758,-272.369\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"398.439,-265.087 401.893,-271.942 398.593,-268.583 398.746,-272.08 398.746,-272.08 398.746,-272.08 398.593,-268.583 395.599,-272.218 398.439,-265.087 398.439,-265.087\"/>\n",
         "<text text-anchor=\"start\" x=\"351.61\" y=\"-290.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 4 -->\n",
-        "<g id=\"node5\" class=\"node\"><title>4</title>\n",
+        "<g id=\"node6\" class=\"node\"><title>4</title>\n",
         "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"540.35\" cy=\"-276\" rx=\"26.7407\" ry=\"26.7407\"/>\n",
         "<text text-anchor=\"start\" x=\"535.85\" y=\"-279.8\" font-family=\"Lato\" font-size=\"14.00\">4</text>\n",
         "<text text-anchor=\"start\" x=\"532.35\" y=\"-264.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;4 -->\n",
-        "<g id=\"edge5\" class=\"edge\"><title>1&#45;&gt;4</title>\n",
+        "<g id=\"edge6\" class=\"edge\"><title>1&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M410.506,-250.558C416.663,-252.504 423.275,-254.452 429.48,-256 455.001,-262.367 484.328,-267.602 506.26,-271.117\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"513.398,-272.243 505.993,-274.264 509.941,-271.698 506.484,-271.153 506.484,-271.153 506.484,-271.153 509.941,-271.698 506.974,-268.041 513.398,-272.243 513.398,-272.243\"/>\n",
         "<text text-anchor=\"start\" x=\"431.48\" y=\"-272.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
-        "<!-- 4&#45;&gt;0 -->\n",
-        "<g id=\"edge15\" class=\"edge\"><title>4&#45;&gt;0</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M515.008,-285.328C491.103,-293.955 453.389,-306.151 419.48,-311 317.98,-325.515 290.121,-310.895 189.74,-290 153.521,-282.461 144.801,-278.807 109.74,-267 105.574,-265.597 101.222,-264.033 96.9444,-262.437\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"90.323,-259.922 97.9854,-259.463 93.5949,-261.165 96.8669,-262.408 96.8669,-262.408 96.8669,-262.408 93.5949,-261.165 95.7484,-265.353 90.323,-259.922 90.323,-259.922\"/>\n",
-        "<text text-anchor=\"start\" x=\"286.74\" y=\"-319.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
-        "</g>\n",
-        "<!-- 4&#45;&gt;1 -->\n",
-        "<g id=\"edge14\" class=\"edge\"><title>4&#45;&gt;1</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M522.215,-255.476C514.834,-248.186 505.577,-240.839 495.48,-237 470.679,-227.57 440.429,-229.851 417.954,-233.907\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"410.947,-235.274 417.215,-230.842 414.382,-234.604 417.818,-233.934 417.818,-233.934 417.818,-233.934 414.382,-234.604 418.421,-237.025 410.947,-235.274 410.947,-235.274\"/>\n",
-        "<text text-anchor=\"start\" x=\"429.48\" y=\"-240.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
-        "</g>\n",
-        "<!-- 4&#45;&gt;4 -->\n",
-        "<g id=\"edge13\" class=\"edge\"><title>4&#45;&gt;4</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M526.521,-299.087C524.608,-310.6 529.217,-320.87 540.35,-320.87 549.048,-320.87 553.764,-314.602 554.499,-306.369\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"554.179,-299.087 557.633,-305.942 554.333,-302.583 554.486,-306.08 554.486,-306.08 554.486,-306.08 554.333,-302.583 551.339,-306.218 554.179,-299.087 554.179,-299.087\"/>\n",
-        "<text text-anchor=\"start\" x=\"509.35\" y=\"-324.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
-        "</g>\n",
         "<!-- 2&#45;&gt;0 -->\n",
-        "<g id=\"edge11\" class=\"edge\"><title>2&#45;&gt;0</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M195.825,-150.543C171.482,-148.688 135.104,-149.645 109.74,-167 92.6401,-178.7 81.7051,-199.248 75.029,-216.97\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"72.5911,-223.851 71.9597,-216.201 73.76,-220.552 74.9289,-217.253 74.9289,-217.253 74.9289,-217.253 73.76,-220.552 77.898,-218.305 72.5911,-223.851 72.5911,-223.851\"/>\n",
-        "<text text-anchor=\"start\" x=\"120.74\" y=\"-170.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
+        "<g id=\"edge15\" class=\"edge\"><title>2&#45;&gt;0</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M202.684,-172.339C193.709,-180.451 182.606,-189.769 171.74,-197 158.489,-205.819 122.523,-223.365 96.1756,-235.852\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"89.7041,-238.909 94.688,-233.07 92.8688,-237.414 96.0334,-235.919 96.0334,-235.919 96.0334,-235.919 92.8688,-237.414 97.3789,-238.767 89.7041,-238.909 89.7041,-238.909\"/>\n",
+        "<text text-anchor=\"start\" x=\"120.74\" y=\"-231.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;3 -->\n",
-        "<g id=\"edge9\" class=\"edge\"><title>2&#45;&gt;3</title>\n",
+        "<g id=\"edge13\" class=\"edge\"><title>2&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M245.301,-139.03C273.986,-119.114 324.723,-83.8859 356.126,-62.0828\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"362.136,-57.9096 358.183,-64.4894 359.261,-59.9058 356.386,-61.9019 356.386,-61.9019 356.386,-61.9019 359.261,-59.9058 354.59,-59.3144 362.136,-57.9096 362.136,-57.9096\"/>\n",
         "<text text-anchor=\"start\" x=\"277.74\" y=\"-122.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;1 -->\n",
-        "<g id=\"edge8\" class=\"edge\"><title>2&#45;&gt;1</title>\n",
+        "<g id=\"edge12\" class=\"edge\"><title>2&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M246.646,-166.608C275.019,-182.226 323.394,-208.854 354.406,-225.925\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"360.747,-229.415 353.096,-228.799 357.681,-227.727 354.615,-226.04 354.615,-226.04 354.615,-226.04 357.681,-227.727 356.134,-223.28 360.747,-229.415 360.747,-229.415\"/>\n",
         "<text text-anchor=\"start\" x=\"273.74\" y=\"-219.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;2 -->\n",
-        "<g id=\"edge10\" class=\"edge\"><title>2&#45;&gt;2</title>\n",
+        "<g id=\"edge14\" class=\"edge\"><title>2&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M207.906,-176.625C205.623,-188.324 210.568,-198.87 222.74,-198.87 232.344,-198.87 237.449,-192.304 238.054,-183.787\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"237.575,-176.625 241.185,-183.399 237.808,-180.118 238.042,-183.61 238.042,-183.61 238.042,-183.61 237.808,-180.118 234.899,-183.82 237.575,-176.625 237.575,-176.625\"/>\n",
         "<text text-anchor=\"start\" x=\"191.74\" y=\"-202.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
+        "<!-- 4&#45;&gt;0 -->\n",
+        "<g id=\"edge11\" class=\"edge\"><title>4&#45;&gt;0</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M515.008,-285.328C491.103,-293.955 453.389,-306.151 419.48,-311 317.98,-325.515 290.121,-310.895 189.74,-290 153.521,-282.461 144.801,-278.807 109.74,-267 105.574,-265.597 101.222,-264.033 96.9444,-262.437\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"90.323,-259.922 97.9854,-259.463 93.5949,-261.165 96.8669,-262.408 96.8669,-262.408 96.8669,-262.408 93.5949,-261.165 95.7484,-265.353 90.323,-259.922 90.323,-259.922\"/>\n",
+        "<text text-anchor=\"start\" x=\"286.74\" y=\"-319.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
+        "</g>\n",
+        "<!-- 4&#45;&gt;1 -->\n",
+        "<g id=\"edge10\" class=\"edge\"><title>4&#45;&gt;1</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M522.215,-255.476C514.834,-248.186 505.577,-240.839 495.48,-237 470.679,-227.57 440.429,-229.851 417.954,-233.907\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"410.947,-235.274 417.215,-230.842 414.382,-234.604 417.818,-233.934 417.818,-233.934 417.818,-233.934 414.382,-234.604 418.421,-237.025 410.947,-235.274 410.947,-235.274\"/>\n",
+        "<text text-anchor=\"start\" x=\"429.48\" y=\"-240.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
+        "</g>\n",
+        "<!-- 4&#45;&gt;4 -->\n",
+        "<g id=\"edge9\" class=\"edge\"><title>4&#45;&gt;4</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M526.521,-299.087C524.608,-310.6 529.217,-320.87 540.35,-320.87 549.048,-320.87 553.764,-314.602 554.499,-306.369\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"554.179,-299.087 557.633,-305.942 554.333,-302.583 554.486,-306.08 554.486,-306.08 554.486,-306.08 554.333,-302.583 551.339,-306.218 554.179,-299.087 554.179,-299.087\"/>\n",
+        "<text text-anchor=\"start\" x=\"509.35\" y=\"-324.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
+        "</g>\n",
         "</g>\n",
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f734006f6c0> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd270264360> >"
        ]
       },
       {
@@ -3738,110 +3737,110 @@
         "<!-- I -->\n",
         "<!-- 0 -->\n",
         "<g id=\"node2\" class=\"node\"><title>0</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"64.8701\" cy=\"-109\" rx=\"26.7407\" ry=\"26.7407\"/>\n",
-        "<text text-anchor=\"start\" x=\"60.3701\" y=\"-112.8\" font-family=\"Lato\" font-size=\"14.00\">0</text>\n",
-        "<text text-anchor=\"start\" x=\"56.8701\" y=\"-97.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#b276b2\">\u2778</text>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"64.8701\" cy=\"-132\" rx=\"26.7407\" ry=\"26.7407\"/>\n",
+        "<text text-anchor=\"start\" x=\"60.3701\" y=\"-135.8\" font-family=\"Lato\" font-size=\"14.00\">0</text>\n",
+        "<text text-anchor=\"start\" x=\"56.8701\" y=\"-120.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#b276b2\">\u2778</text>\n",
         "</g>\n",
         "<!-- I&#45;&gt;0 -->\n",
         "<g id=\"edge1\" class=\"edge\"><title>I&#45;&gt;0</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M1.04557,-109C1.94668,-109 16.0699,-109 30.6965,-109\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"37.8616,-109 30.8617,-112.15 34.3616,-109 30.8616,-109 30.8616,-109 30.8616,-109 34.3616,-109 30.8616,-105.85 37.8616,-109 37.8616,-109\"/>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M1.04557,-132C1.94668,-132 16.0699,-132 30.6965,-132\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"37.8616,-132 30.8617,-135.15 34.3616,-132 30.8616,-132 30.8616,-132 30.8616,-132 34.3616,-132 30.8616,-128.85 37.8616,-132 37.8616,-132\"/>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;0 -->\n",
         "<g id=\"edge4\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M56.6704,-134.821C56.2072,-145.178 58.9404,-153.87 64.8701,-153.87 69.3173,-153.87 71.9666,-148.981 72.8178,-142.167\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"73.0697,-134.821 75.9779,-141.925 72.9497,-138.319 72.8297,-141.817 72.8297,-141.817 72.8297,-141.817 72.9497,-138.319 69.6816,-141.709 73.0697,-134.821 73.0697,-134.821\"/>\n",
-        "<text text-anchor=\"start\" x=\"44.8701\" y=\"-157.67\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M56.6704,-157.821C56.2072,-168.178 58.9404,-176.87 64.8701,-176.87 69.3173,-176.87 71.9666,-171.981 72.8178,-165.167\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"73.0697,-157.821 75.9779,-164.925 72.9497,-161.319 72.8297,-164.817 72.8297,-164.817 72.8297,-164.817 72.9497,-161.319 69.6816,-164.709 73.0697,-157.821 73.0697,-157.821\"/>\n",
+        "<text text-anchor=\"start\" x=\"44.8701\" y=\"-180.67\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 1 -->\n",
         "<g id=\"node3\" class=\"node\"><title>1</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"384.61\" cy=\"-106\" rx=\"26.7407\" ry=\"26.7407\"/>\n",
-        "<text text-anchor=\"start\" x=\"380.11\" y=\"-109.8\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
-        "<text text-anchor=\"start\" x=\"376.61\" y=\"-94.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"384.61\" cy=\"-119\" rx=\"26.7407\" ry=\"26.7407\"/>\n",
+        "<text text-anchor=\"start\" x=\"380.11\" y=\"-122.8\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
+        "<text text-anchor=\"start\" x=\"376.61\" y=\"-107.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;1 -->\n",
         "<g id=\"edge2\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M87.2051,-93.6406C94.2024,-88.9479 102.137,-83.9806 109.74,-80 143.666,-62.2382 152.137,-55.2418 189.74,-48 256.677,-35.1091 278.344,-50.381 339.74,-80 344.786,-82.4344 350.018,-85.2539 355.036,-88.1195\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"361.247,-91.7483 353.614,-90.9368 358.225,-89.9826 355.203,-88.217 355.203,-88.217 355.203,-88.217 358.225,-89.9826 356.792,-85.4972 361.247,-91.7483 361.247,-91.7483\"/>\n",
-        "<text text-anchor=\"start\" x=\"189.74\" y=\"-51.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M82.356,-110.806C90.0359,-101.818 99.6893,-91.6718 109.74,-84 141.499,-59.7587 150.902,-52.3727 189.74,-43 218.255,-36.1186 227.455,-35.2288 255.74,-43 294.471,-53.641 333.338,-79.4046 357.88,-97.9878\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"363.499,-102.307 356.03,-100.538 360.725,-100.174 357.95,-98.0409 357.95,-98.0409 357.95,-98.0409 360.725,-100.174 359.87,-95.5436 363.499,-102.307 363.499,-102.307\"/>\n",
+        "<text text-anchor=\"start\" x=\"189.74\" y=\"-46.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2 -->\n",
-        "<g id=\"node5\" class=\"node\"><title>2</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"222.74\" cy=\"-145\" rx=\"26.7407\" ry=\"26.7407\"/>\n",
-        "<text text-anchor=\"start\" x=\"218.24\" y=\"-148.8\" font-family=\"Lato\" font-size=\"14.00\">2</text>\n",
-        "<text text-anchor=\"start\" x=\"214.74\" y=\"-133.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#b276b2\">\u2778</text>\n",
+        "<g id=\"node4\" class=\"node\"><title>2</title>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"222.74\" cy=\"-94\" rx=\"26.7407\" ry=\"26.7407\"/>\n",
+        "<text text-anchor=\"start\" x=\"218.24\" y=\"-97.8\" font-family=\"Lato\" font-size=\"14.00\">2</text>\n",
+        "<text text-anchor=\"start\" x=\"214.74\" y=\"-82.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#b276b2\">\u2778</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;2 -->\n",
         "<g id=\"edge3\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M91.7873,-105.045C113.649,-102.69 145.484,-101.587 171.74,-110 180.412,-112.779 188.896,-117.636 196.341,-122.863\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"202.332,-127.303 194.833,-125.666 199.52,-125.219 196.708,-123.135 196.708,-123.135 196.708,-123.135 199.52,-125.219 198.584,-120.604 202.332,-127.303 202.332,-127.303\"/>\n",
-        "<text text-anchor=\"start\" x=\"109.74\" y=\"-113.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M83.6255,-112.165C90.9613,-105.381 100.023,-98.5997 109.74,-95 135.078,-85.613 165.909,-86.1222 188.804,-88.5498\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"195.942,-89.3953 188.62,-91.6999 192.466,-88.9835 188.99,-88.5718 188.99,-88.5718 188.99,-88.5718 192.466,-88.9835 189.361,-85.4436 195.942,-89.3953 195.942,-89.3953\"/>\n",
+        "<text text-anchor=\"start\" x=\"109.74\" y=\"-98.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;0 -->\n",
         "<g id=\"edge7\" class=\"edge\"><title>1&#45;&gt;0</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M357.7,-102.851C331.904,-99.8856 291.154,-95.6581 255.74,-94 190.868,-90.9627 174.061,-91.0275 109.74,-100 105.986,-100.524 102.071,-101.174 98.1923,-101.884\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"91.2925,-103.213 97.5709,-98.7962 94.7294,-102.551 98.1663,-101.889 98.1663,-101.889 98.1663,-101.889 94.7294,-102.551 98.7618,-104.983 91.2925,-103.213 91.2925,-103.213\"/>\n",
-        "<text text-anchor=\"start\" x=\"202.74\" y=\"-97.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M359.723,-129.903C334.494,-140.773 293.252,-156.727 255.74,-163 199.763,-172.361 134.443,-155.637 96.8465,-143.332\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"90.1574,-141.093 97.7953,-140.328 93.4764,-142.204 96.7955,-143.315 96.7955,-143.315 96.7955,-143.315 93.4764,-142.204 95.7956,-146.302 90.1574,-141.093 90.1574,-141.093\"/>\n",
+        "<text text-anchor=\"start\" x=\"202.74\" y=\"-168.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;1 -->\n",
         "<g id=\"edge6\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M370.781,-129.087C368.868,-140.6 373.477,-150.87 384.61,-150.87 393.308,-150.87 398.024,-144.602 398.758,-136.369\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"398.439,-129.087 401.893,-135.942 398.593,-132.583 398.746,-136.08 398.746,-136.08 398.746,-136.08 398.593,-132.583 395.599,-136.218 398.439,-129.087 398.439,-129.087\"/>\n",
-        "<text text-anchor=\"start\" x=\"351.61\" y=\"-154.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M370.781,-142.087C368.868,-153.6 373.477,-163.87 384.61,-163.87 393.308,-163.87 398.024,-157.602 398.758,-149.369\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"398.439,-142.087 401.893,-148.942 398.593,-145.583 398.746,-149.08 398.746,-149.08 398.746,-149.08 398.593,-145.583 395.599,-149.218 398.439,-142.087 398.439,-142.087\"/>\n",
+        "<text text-anchor=\"start\" x=\"351.61\" y=\"-167.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 3 -->\n",
-        "<g id=\"node4\" class=\"node\"><title>3</title>\n",
-        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"540.35\" cy=\"-144\" rx=\"26.7407\" ry=\"26.7407\"/>\n",
-        "<text text-anchor=\"start\" x=\"535.85\" y=\"-147.8\" font-family=\"Lato\" font-size=\"14.00\">3</text>\n",
-        "<text text-anchor=\"start\" x=\"532.35\" y=\"-132.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
+        "<g id=\"node5\" class=\"node\"><title>3</title>\n",
+        "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"540.35\" cy=\"-157\" rx=\"26.7407\" ry=\"26.7407\"/>\n",
+        "<text text-anchor=\"start\" x=\"535.85\" y=\"-160.8\" font-family=\"Lato\" font-size=\"14.00\">3</text>\n",
+        "<text text-anchor=\"start\" x=\"532.35\" y=\"-145.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;3 -->\n",
         "<g id=\"edge5\" class=\"edge\"><title>1&#45;&gt;3</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M409.99,-115.637C416.279,-117.916 423.08,-120.203 429.48,-122 454.889,-129.133 484.223,-134.884 506.186,-138.715\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"513.336,-139.94 505.904,-141.862 509.886,-139.349 506.436,-138.758 506.436,-138.758 506.436,-138.758 509.886,-139.349 506.968,-135.653 513.336,-139.94 513.336,-139.94\"/>\n",
-        "<text text-anchor=\"start\" x=\"431.48\" y=\"-139.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
-        "</g>\n",
-        "<!-- 3&#45;&gt;0 -->\n",
-        "<g id=\"edge13\" class=\"edge\"><title>3&#45;&gt;0</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M516.388,-156.528C459.805,-185.708 309.563,-252.866 189.74,-214 146.429,-199.951 108.463,-161.835 86.3368,-135.612\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"81.8596,-130.21 88.7518,-133.589 84.093,-132.905 86.3264,-135.599 86.3264,-135.599 86.3264,-135.599 84.093,-132.905 83.901,-137.609 81.8596,-130.21 81.8596,-130.21\"/>\n",
-        "<text text-anchor=\"start\" x=\"286.74\" y=\"-228.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
-        "</g>\n",
-        "<!-- 3&#45;&gt;1 -->\n",
-        "<g id=\"edge12\" class=\"edge\"><title>3&#45;&gt;1</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M522.817,-122.878C515.398,-115.075 505.953,-107.132 495.48,-103 470.814,-93.2682 440.553,-94.9855 418.039,-98.5899\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"411.019,-99.8143 417.373,-95.5084 414.467,-99.2129 417.915,-98.6115 417.915,-98.6115 417.915,-98.6115 414.467,-99.2129 418.456,-101.715 411.019,-99.8143 411.019,-99.8143\"/>\n",
-        "<text text-anchor=\"start\" x=\"429.48\" y=\"-106.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
-        "</g>\n",
-        "<!-- 3&#45;&gt;3 -->\n",
-        "<g id=\"edge11\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M526.521,-167.087C524.608,-178.6 529.217,-188.87 540.35,-188.87 549.048,-188.87 553.764,-182.602 554.499,-174.369\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"554.179,-167.087 557.633,-173.942 554.333,-170.583 554.486,-174.08 554.486,-174.08 554.486,-174.08 554.333,-170.583 551.339,-174.218 554.179,-167.087 554.179,-167.087\"/>\n",
-        "<text text-anchor=\"start\" x=\"509.35\" y=\"-192.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M409.99,-128.637C416.279,-130.916 423.08,-133.203 429.48,-135 454.889,-142.133 484.223,-147.884 506.186,-151.715\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"513.336,-152.94 505.904,-154.862 509.886,-152.349 506.436,-151.758 506.436,-151.758 506.436,-151.758 509.886,-152.349 506.968,-148.653 513.336,-152.94 513.336,-152.94\"/>\n",
+        "<text text-anchor=\"start\" x=\"431.48\" y=\"-152.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;0 -->\n",
-        "<g id=\"edge10\" class=\"edge\"><title>2&#45;&gt;0</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M195.659,-141.647C172.778,-138.398 138.729,-132.812 109.74,-125 105.528,-123.865 101.148,-122.5 96.857,-121.052\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"90.2244,-118.73 97.8721,-118.07 93.5277,-119.886 96.8311,-121.043 96.8311,-121.043 96.8311,-121.043 93.5277,-119.886 95.79,-124.016 90.2244,-118.73 90.2244,-118.73\"/>\n",
-        "<text text-anchor=\"start\" x=\"120.74\" y=\"-140.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
+        "<g id=\"edge13\" class=\"edge\"><title>2&#45;&gt;0</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M196.967,-102.493C188.968,-105.084 180.025,-107.82 171.74,-110 147.542,-116.367 119.843,-122.068 98.8478,-126.07\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"91.7178,-127.413 98.0137,-123.022 95.1573,-126.765 98.5968,-126.117 98.5968,-126.117 98.5968,-126.117 95.1573,-126.765 99.18,-129.213 91.7178,-127.413 91.7178,-127.413\"/>\n",
+        "<text text-anchor=\"start\" x=\"120.74\" y=\"-126.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;1 -->\n",
-        "<g id=\"edge8\" class=\"edge\"><title>2&#45;&gt;1</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M249.072,-138.82C276.786,-132.06 321.273,-121.207 351.435,-113.849\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"358.397,-112.151 352.343,-116.87 354.997,-112.98 351.596,-113.81 351.596,-113.81 351.596,-113.81 354.997,-112.98 350.85,-110.75 358.397,-112.151 358.397,-112.151\"/>\n",
-        "<text text-anchor=\"start\" x=\"273.74\" y=\"-135.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
+        "<g id=\"edge11\" class=\"edge\"><title>2&#45;&gt;1</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M249.426,-98.0167C277.045,-102.336 321.025,-109.213 351.051,-113.909\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"357.988,-114.993 350.585,-117.024 354.53,-114.452 351.072,-113.912 351.072,-113.912 351.072,-113.912 354.53,-114.452 351.559,-110.8 357.988,-114.993 357.988,-114.993\"/>\n",
+        "<text text-anchor=\"start\" x=\"273.74\" y=\"-114.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;2 -->\n",
-        "<g id=\"edge9\" class=\"edge\"><title>2&#45;&gt;2</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M207.906,-167.625C205.623,-179.324 210.568,-189.87 222.74,-189.87 232.344,-189.87 237.449,-183.304 238.054,-174.787\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"237.575,-167.625 241.185,-174.399 237.808,-171.118 238.042,-174.61 238.042,-174.61 238.042,-174.61 237.808,-171.118 234.899,-174.82 237.575,-167.625 237.575,-167.625\"/>\n",
-        "<text text-anchor=\"start\" x=\"191.74\" y=\"-193.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
+        "<g id=\"edge12\" class=\"edge\"><title>2&#45;&gt;2</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M207.906,-116.625C205.623,-128.324 210.568,-138.87 222.74,-138.87 232.344,-138.87 237.449,-132.304 238.054,-123.787\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"237.575,-116.625 241.185,-123.399 237.808,-120.118 238.042,-123.61 238.042,-123.61 238.042,-123.61 237.808,-120.118 234.899,-123.82 237.575,-116.625 237.575,-116.625\"/>\n",
+        "<text text-anchor=\"start\" x=\"191.74\" y=\"-142.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
+        "</g>\n",
+        "<!-- 3&#45;&gt;0 -->\n",
+        "<g id=\"edge10\" class=\"edge\"><title>3&#45;&gt;0</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M514.205,-165.011C488.654,-172.694 447.779,-183.738 411.48,-188 313.585,-199.493 286.995,-200.029 189.74,-184 152.985,-177.942 143.642,-174.437 109.74,-159 104.358,-156.549 98.8295,-153.563 93.5891,-150.482\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"87.5957,-146.847 95.2145,-147.784 90.5884,-148.662 93.5811,-150.477 93.5811,-150.477 93.5811,-150.477 90.5884,-148.662 91.9476,-153.17 87.5957,-146.847 87.5957,-146.847\"/>\n",
+        "<text text-anchor=\"start\" x=\"286.74\" y=\"-199.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
+        "</g>\n",
+        "<!-- 3&#45;&gt;1 -->\n",
+        "<g id=\"edge9\" class=\"edge\"><title>3&#45;&gt;1</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M522.817,-135.878C515.398,-128.075 505.953,-120.132 495.48,-116 470.814,-106.268 440.553,-107.985 418.039,-111.59\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"411.019,-112.814 417.373,-108.508 414.467,-112.213 417.915,-111.612 417.915,-111.612 417.915,-111.612 414.467,-112.213 418.456,-114.715 411.019,-112.814 411.019,-112.814\"/>\n",
+        "<text text-anchor=\"start\" x=\"429.48\" y=\"-119.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
+        "</g>\n",
+        "<!-- 3&#45;&gt;3 -->\n",
+        "<g id=\"edge8\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M526.521,-180.087C524.608,-191.6 529.217,-201.87 540.35,-201.87 549.048,-201.87 553.764,-195.602 554.499,-187.369\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"554.179,-180.087 557.633,-186.942 554.333,-183.583 554.486,-187.08 554.486,-187.08 554.486,-187.08 554.333,-183.583 551.339,-187.218 554.179,-180.087 554.179,-180.087\"/>\n",
+        "<text text-anchor=\"start\" x=\"509.35\" y=\"-205.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "</g>\n",
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f733338d090> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd270264d80> >"
        ]
       }
      ],
@@ -3918,7 +3917,7 @@
         "<polygon fill=\"black\" stroke=\"black\" points=\"37.8616,-219 30.8617,-222.15 34.3616,-219 30.8616,-219 30.8616,-219 30.8616,-219 34.3616,-219 30.8616,-215.85 37.8616,-219 37.8616,-219\"/>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;0 -->\n",
-        "<g id=\"edge5\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
+        "<g id=\"edge14\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M56.6704,-244.821C56.2072,-255.178 58.9404,-263.87 64.8701,-263.87 69.3173,-263.87 71.9666,-258.981 72.8178,-252.167\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"73.0697,-244.821 75.9779,-251.925 72.9497,-248.319 72.8297,-251.817 72.8297,-251.817 72.8297,-251.817 72.9497,-248.319 69.6816,-251.709 73.0697,-244.821 73.0697,-244.821\"/>\n",
         "<text text-anchor=\"start\" x=\"44.8701\" y=\"-267.67\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
@@ -3931,7 +3930,7 @@
         "<text text-anchor=\"start\" x=\"939.161\" y=\"-124.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#b276b2\">\u2778</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;2 -->\n",
-        "<g id=\"edge3\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
+        "<g id=\"edge12\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M71.4782,-192.583C85.5575,-134.336 128.171,-0 221.74,-0 221.74,-0 221.74,-0 832.35,-0 881.472,-0 911.223,-56.0526 926.171,-95.9213\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"928.617,-102.664 923.268,-97.1583 927.423,-99.374 926.23,-96.0839 926.23,-96.0839 926.23,-96.0839 927.423,-99.374 929.191,-95.0095 928.617,-102.664 928.617,-102.664\"/>\n",
         "<text text-anchor=\"start\" x=\"540.98\" y=\"-3.8\" font-family=\"Lato\" font-size=\"14.00\">c</text>\n",
@@ -3943,28 +3942,28 @@
         "<text text-anchor=\"start\" x=\"376.61\" y=\"-221.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;1 -->\n",
-        "<g id=\"edge2\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
+        "<g id=\"edge11\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M91.8721,-220.146C149.269,-222.675 286.739,-228.732 350.318,-231.533\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"357.695,-231.858 350.563,-234.697 354.198,-231.704 350.701,-231.55 350.701,-231.55 350.701,-231.55 354.198,-231.704 350.84,-228.403 357.695,-231.858 357.695,-231.858\"/>\n",
         "<text text-anchor=\"start\" x=\"189.74\" y=\"-231.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 3 -->\n",
-        "<g id=\"node9\" class=\"node\"><title>3</title>\n",
+        "<g id=\"node8\" class=\"node\"><title>3</title>\n",
         "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"222.74\" cy=\"-304\" rx=\"26.7407\" ry=\"26.7407\"/>\n",
         "<text text-anchor=\"start\" x=\"218.24\" y=\"-307.8\" font-family=\"Lato\" font-size=\"14.00\">3</text>\n",
         "<text text-anchor=\"start\" x=\"214.74\" y=\"-292.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#b276b2\">\u2778</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;3 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>0&#45;&gt;3</title>\n",
+        "<g id=\"edge13\" class=\"edge\"><title>0&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M76.3421,-243.4C83.6544,-257.48 94.7917,-274.272 109.74,-284 133.145,-299.231 164.857,-303.739 188.562,-304.722\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"195.644,-304.922 188.558,-307.873 192.146,-304.823 188.647,-304.725 188.647,-304.725 188.647,-304.725 192.146,-304.823 188.736,-301.576 195.644,-304.922 195.644,-304.922\"/>\n",
         "<text text-anchor=\"start\" x=\"109.74\" y=\"-306.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;2 -->\n",
-        "<g id=\"edge11\" class=\"edge\"><title>2&#45;&gt;2</title>\n",
+        "<g id=\"edge2\" class=\"edge\"><title>2&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M928.661,-167.463C928.661,-178.284 932.161,-186.941 939.161,-186.941 944.521,-186.941 947.829,-181.867 949.085,-174.632\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"949.661,-167.463 952.24,-174.693 949.381,-170.952 949.1,-174.441 949.1,-174.441 949.1,-174.441 949.381,-170.952 945.96,-174.188 949.661,-167.463 949.661,-167.463\"/>\n",
-        "<text text-anchor=\"middle\" x=\"939.161\" y=\"-190.741\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
+        "<text text-anchor=\"start\" x=\"934.661\" y=\"-190.741\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- 4 -->\n",
         "<g id=\"node4\" class=\"node\"><title>4</title>\n",
@@ -3973,13 +3972,13 @@
         "<text text-anchor=\"start\" x=\"823.35\" y=\"-242.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 4&#45;&gt;2 -->\n",
-        "<g id=\"edge19\" class=\"edge\"><title>4&#45;&gt;2</title>\n",
+        "<g id=\"edge4\" class=\"edge\"><title>4&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M849.823,-234.35C866.489,-215.606 891.838,-187.097 911.114,-165.418\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"915.875,-160.064 913.578,-167.388 913.549,-162.68 911.224,-165.295 911.224,-165.295 911.224,-165.295 913.549,-162.68 908.87,-163.202 915.875,-160.064 915.875,-160.064\"/>\n",
         "<text text-anchor=\"start\" x=\"876.22\" y=\"-205.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "</g>\n",
         "<!-- 4&#45;&gt;4 -->\n",
-        "<g id=\"edge18\" class=\"edge\"><title>4&#45;&gt;4</title>\n",
+        "<g id=\"edge3\" class=\"edge\"><title>4&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M822.058,-279.37C821.417,-289.924 824.514,-298.87 831.35,-298.87 836.584,-298.87 839.626,-293.626 840.477,-286.431\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"840.643,-279.37 843.628,-286.442 840.561,-282.869 840.479,-286.368 840.479,-286.368 840.479,-286.368 840.561,-282.869 837.33,-286.294 840.643,-279.37 840.643,-279.37\"/>\n",
         "<text text-anchor=\"start\" x=\"827.85\" y=\"-302.67\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
@@ -3991,19 +3990,19 @@
         "<text text-anchor=\"start\" x=\"692.48\" y=\"-183.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 7&#45;&gt;2 -->\n",
-        "<g id=\"edge31\" class=\"edge\"><title>7&#45;&gt;2</title>\n",
+        "<g id=\"edge7\" class=\"edge\"><title>7&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M726.809,-188.579C768.069,-178.119 850.078,-157.33 898.922,-144.947\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"905.88,-143.184 899.868,-147.957 902.487,-144.044 899.094,-144.904 899.094,-144.904 899.094,-144.904 902.487,-144.044 898.32,-141.85 905.88,-143.184 905.88,-143.184\"/>\n",
         "<text text-anchor=\"start\" x=\"825.85\" y=\"-173.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "</g>\n",
         "<!-- 7&#45;&gt;4 -->\n",
-        "<g id=\"edge30\" class=\"edge\"><title>7&#45;&gt;4</title>\n",
+        "<g id=\"edge6\" class=\"edge\"><title>7&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M725.117,-205.822C746.148,-215.45 777.03,-229.588 799.904,-240.061\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"806.427,-243.047 798.751,-242.997 803.245,-241.59 800.062,-240.133 800.062,-240.133 800.062,-240.133 803.245,-241.59 801.374,-237.269 806.427,-243.047 806.427,-243.047\"/>\n",
         "<text text-anchor=\"start\" x=\"749.48\" y=\"-237.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b</text>\n",
         "</g>\n",
         "<!-- 7&#45;&gt;7 -->\n",
-        "<g id=\"edge29\" class=\"edge\"><title>7&#45;&gt;7</title>\n",
+        "<g id=\"edge5\" class=\"edge\"><title>7&#45;&gt;7</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M688.35,-219.005C687.027,-230.141 691.07,-239.87 700.48,-239.87 707.832,-239.87 711.908,-233.932 712.709,-226.024\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"712.611,-219.005 715.858,-225.96 712.659,-222.504 712.708,-226.004 712.708,-226.004 712.708,-226.004 712.659,-222.504 709.559,-226.048 712.611,-219.005 712.611,-219.005\"/>\n",
         "<text text-anchor=\"start\" x=\"683.48\" y=\"-243.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b</text>\n",
@@ -4015,136 +4014,136 @@
         "<text text-anchor=\"start\" x=\"692.48\" y=\"-364.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;2 -->\n",
-        "<g id=\"edge21\" class=\"edge\"><title>5&#45;&gt;2</title>\n",
+        "<g id=\"edge9\" class=\"edge\"><title>5&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M727.661,-377.039C744.737,-377.019 767.328,-375.66 786.48,-370 825.298,-358.528 839.732,-356.607 866.22,-326 903.813,-282.563 922.644,-217.541 931.4,-175.694\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"932.82,-168.673 934.52,-176.158 932.126,-172.103 931.432,-175.534 931.432,-175.534 931.432,-175.534 932.126,-172.103 928.345,-174.909 932.82,-168.673 932.82,-168.673\"/>\n",
         "<text text-anchor=\"start\" x=\"825.85\" y=\"-369.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;4 -->\n",
-        "<g id=\"edge20\" class=\"edge\"><title>5&#45;&gt;4</title>\n",
+        "<g id=\"edge8\" class=\"edge\"><title>5&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M725.575,-365.415C747.254,-355.558 777.098,-341.062 786.48,-332 799.974,-318.966 810.498,-300.875 817.853,-285.396\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"820.81,-278.945 820.757,-286.621 819.351,-282.126 817.893,-285.308 817.893,-285.308 817.893,-285.308 819.351,-282.126 815.03,-283.995 820.81,-278.945 820.81,-278.945\"/>\n",
         "<text text-anchor=\"start\" x=\"749.48\" y=\"-356.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b</text>\n",
         "</g>\n",
         "<!-- 5&#45;&gt;5 -->\n",
-        "<g id=\"edge22\" class=\"edge\"><title>5&#45;&gt;5</title>\n",
+        "<g id=\"edge10\" class=\"edge\"><title>5&#45;&gt;5</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M688.35,-400.005C687.027,-411.141 691.07,-420.87 700.48,-420.87 707.832,-420.87 711.908,-414.932 712.709,-407.024\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"712.611,-400.005 715.858,-406.96 712.659,-403.504 712.708,-407.004 712.708,-407.004 712.708,-407.004 712.659,-403.504 709.559,-407.048 712.611,-400.005 712.611,-400.005\"/>\n",
         "<text text-anchor=\"start\" x=\"683.48\" y=\"-424.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;0 -->\n",
-        "<g id=\"edge10\" class=\"edge\"><title>1&#45;&gt;0</title>\n",
+        "<g id=\"edge19\" class=\"edge\"><title>1&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M358.384,-226.048C332.769,-219.375 291.846,-209.77 255.74,-206 200.748,-200.257 136.518,-207.578 98.6266,-213.336\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"91.41,-214.463 97.8403,-210.271 94.8681,-213.923 98.3262,-213.383 98.3262,-213.383 98.3262,-213.383 94.8681,-213.923 98.8121,-216.495 91.41,-214.463 91.41,-214.463\"/>\n",
         "<text text-anchor=\"start\" x=\"202.74\" y=\"-209.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;2 -->\n",
-        "<g id=\"edge9\" class=\"edge\"><title>1&#45;&gt;2</title>\n",
+        "<g id=\"edge18\" class=\"edge\"><title>1&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M393.7,-207.391C411.658,-156.176 459.992,-46 543.48,-46 543.48,-46 543.48,-46 832.35,-46 867.684,-46 897.368,-75.4253 916.217,-100.437\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"920.538,-106.35 913.865,-102.557 918.473,-103.524 916.408,-100.699 916.408,-100.699 916.408,-100.699 918.473,-103.524 918.951,-98.8397 920.538,-106.35 920.538,-106.35\"/>\n",
         "<text text-anchor=\"start\" x=\"682.48\" y=\"-49.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;4 -->\n",
-        "<g id=\"edge8\" class=\"edge\"><title>1&#45;&gt;4</title>\n",
+        "<g id=\"edge17\" class=\"edge\"><title>1&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M409.904,-242.508C416.194,-244.636 423.018,-246.657 429.48,-248 562.836,-275.71 599.461,-276.255 735.35,-267 756.17,-265.582 779.38,-262.436 797.647,-259.593\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"804.642,-258.482 798.223,-262.691 801.186,-259.031 797.729,-259.58 797.729,-259.58 797.729,-259.58 801.186,-259.031 797.235,-256.469 804.642,-258.482 804.642,-258.482\"/>\n",
         "<text text-anchor=\"start\" x=\"606.48\" y=\"-276.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;1 -->\n",
-        "<g id=\"edge7\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
+        "<g id=\"edge16\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M370.781,-256.087C368.868,-267.6 373.477,-277.87 384.61,-277.87 393.308,-277.87 398.024,-271.602 398.758,-263.369\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"398.439,-256.087 401.893,-262.942 398.593,-259.583 398.746,-263.08 398.746,-263.08 398.746,-263.08 398.593,-259.583 395.599,-263.218 398.439,-256.087 398.439,-256.087\"/>\n",
         "<text text-anchor=\"start\" x=\"351.61\" y=\"-281.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 6 -->\n",
-        "<g id=\"node8\" class=\"node\"><title>6</title>\n",
+        "<g id=\"node9\" class=\"node\"><title>6</title>\n",
         "<ellipse fill=\"#ffffaa\" stroke=\"black\" cx=\"544.48\" cy=\"-184\" rx=\"26.7407\" ry=\"26.7407\"/>\n",
         "<text text-anchor=\"start\" x=\"539.98\" y=\"-187.8\" font-family=\"Lato\" font-size=\"14.00\">6</text>\n",
         "<text text-anchor=\"start\" x=\"536.48\" y=\"-172.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#faa43a\">\u2777</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;6 -->\n",
-        "<g id=\"edge6\" class=\"edge\"><title>1&#45;&gt;6</title>\n",
+        "<g id=\"edge15\" class=\"edge\"><title>1&#45;&gt;6</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M411.629,-230.944C434.352,-228.525 467.918,-223.43 495.48,-213 502.31,-210.416 509.257,-206.856 515.668,-203.115\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"521.875,-199.343 517.529,-205.67 518.884,-201.161 515.893,-202.979 515.893,-202.979 515.893,-202.979 518.884,-201.161 514.257,-200.287 521.875,-199.343 521.875,-199.343\"/>\n",
         "<text text-anchor=\"start\" x=\"431.48\" y=\"-232.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
-        "<!-- 6&#45;&gt;0 -->\n",
-        "<g id=\"edge28\" class=\"edge\"><title>6&#45;&gt;0</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M517.877,-180.201C510.652,-179.292 502.773,-178.454 495.48,-178 466.204,-176.177 458.793,-176.901 429.48,-178 287.074,-183.337 248.74,-170.58 109.74,-202 105.348,-202.993 100.814,-204.346 96.4013,-205.859\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"89.6066,-208.338 95.1027,-202.98 92.8946,-207.139 96.1825,-205.939 96.1825,-205.939 96.1825,-205.939 92.8946,-207.139 97.2624,-208.898 89.6066,-208.338 89.6066,-208.338\"/>\n",
-        "<text text-anchor=\"start\" x=\"286.74\" y=\"-184.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
-        "</g>\n",
-        "<!-- 6&#45;&gt;2 -->\n",
-        "<g id=\"edge27\" class=\"edge\"><title>6&#45;&gt;2</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M559.817,-161.694C568.196,-150.698 579.81,-138.442 593.48,-132 695.067,-84.1267 832.938,-108.053 899.306,-124.238\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"906.271,-125.973 898.717,-127.338 902.875,-125.127 899.479,-124.281 899.479,-124.281 899.479,-124.281 902.875,-125.127 900.24,-121.225 906.271,-125.973 906.271,-125.973\"/>\n",
-        "<text text-anchor=\"start\" x=\"749.98\" y=\"-109.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; c</text>\n",
-        "</g>\n",
-        "<!-- 6&#45;&gt;4 -->\n",
-        "<g id=\"edge26\" class=\"edge\"><title>6&#45;&gt;4</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M567.523,-170.16C603.954,-149.185 678.363,-114.459 735.35,-141 771.701,-157.93 799.104,-196.373 814.918,-223.71\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"818.497,-230.054 812.314,-225.505 816.777,-227.006 815.057,-223.957 815.057,-223.957 815.057,-223.957 816.777,-227.006 817.801,-222.41 818.497,-230.054 818.497,-230.054\"/>\n",
-        "<text text-anchor=\"start\" x=\"669.48\" y=\"-144.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; c</text>\n",
-        "</g>\n",
-        "<!-- 6&#45;&gt;7 -->\n",
-        "<g id=\"edge23\" class=\"edge\"><title>6&#45;&gt;7</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M571.604,-185.866C597.679,-187.728 637.841,-190.597 666.188,-192.622\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"673.486,-193.143 666.279,-195.786 669.994,-192.894 666.503,-192.644 666.503,-192.644 666.503,-192.644 669.994,-192.894 666.728,-189.502 673.486,-193.143 673.486,-193.143\"/>\n",
-        "<text text-anchor=\"start\" x=\"593.48\" y=\"-195.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; c</text>\n",
-        "</g>\n",
-        "<!-- 6&#45;&gt;1 -->\n",
-        "<g id=\"edge25\" class=\"edge\"><title>6&#45;&gt;1</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M517.453,-181.748C493.585,-180.713 457.758,-181.807 429.48,-194 421.886,-197.275 414.697,-202.393 408.421,-207.856\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"402.928,-212.927 405.934,-205.865 405.5,-210.553 408.071,-208.179 408.071,-208.179 408.071,-208.179 405.5,-210.553 410.208,-210.493 402.928,-212.927 402.928,-212.927\"/>\n",
-        "<text text-anchor=\"start\" x=\"429.48\" y=\"-197.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
-        "</g>\n",
-        "<!-- 6&#45;&gt;6 -->\n",
-        "<g id=\"edge24\" class=\"edge\"><title>6&#45;&gt;6</title>\n",
-        "<path fill=\"none\" stroke=\"black\" d=\"M530.287,-207.087C528.323,-218.6 533.054,-228.87 544.48,-228.87 553.407,-228.87 558.247,-222.602 559.001,-214.369\"/>\n",
-        "<polygon fill=\"black\" stroke=\"black\" points=\"558.673,-207.087 562.135,-213.938 558.831,-210.583 558.988,-214.079 558.988,-214.079 558.988,-214.079 558.831,-210.583 555.841,-214.221 558.673,-207.087 558.673,-207.087\"/>\n",
-        "<text text-anchor=\"start\" x=\"513.48\" y=\"-232.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
-        "</g>\n",
         "<!-- 3&#45;&gt;0 -->\n",
-        "<g id=\"edge17\" class=\"edge\"><title>3&#45;&gt;0</title>\n",
+        "<g id=\"edge31\" class=\"edge\"><title>3&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M202.459,-286.266C193.615,-278.869 182.677,-270.693 171.74,-265 146.175,-251.694 136.002,-257.871 109.74,-246 104.351,-243.564 98.8195,-240.585 93.5779,-237.506\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"87.5841,-233.873 95.2031,-234.808 90.5771,-235.687 93.57,-237.502 93.57,-237.502 93.57,-237.502 90.5771,-235.687 91.937,-240.195 87.5841,-233.873 87.5841,-233.873\"/>\n",
         "<text text-anchor=\"start\" x=\"120.74\" y=\"-268.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;2 -->\n",
-        "<g id=\"edge14\" class=\"edge\"><title>3&#45;&gt;2</title>\n",
+        "<g id=\"edge28\" class=\"edge\"><title>3&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M234.252,-328.301C255.443,-373.06 307.823,-464 383.61,-464 383.61,-464 383.61,-464 832.35,-464 892.241,-464 923.07,-263.921 933.742,-175.82\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"934.595,-168.663 936.895,-175.986 934.181,-172.138 933.767,-175.614 933.767,-175.614 933.767,-175.614 934.181,-172.138 930.639,-175.241 934.595,-168.663 934.595,-168.663\"/>\n",
         "<text text-anchor=\"start\" x=\"604.48\" y=\"-467.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; c</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;4 -->\n",
-        "<g id=\"edge13\" class=\"edge\"><title>3&#45;&gt;4</title>\n",
+        "<g id=\"edge27\" class=\"edge\"><title>3&#45;&gt;4</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M249.402,-308.422C280.907,-313.459 336.021,-321 383.61,-321 383.61,-321 383.61,-321 701.48,-321 741.166,-321 780.763,-295.677 805.38,-276.168\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"811.005,-271.603 807.554,-278.46 808.287,-273.809 805.569,-276.014 805.569,-276.014 805.569,-276.014 808.287,-273.809 803.584,-273.568 811.005,-271.603 811.005,-271.603\"/>\n",
         "<text text-anchor=\"start\" x=\"513.48\" y=\"-324.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; c</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;5 -->\n",
-        "<g id=\"edge15\" class=\"edge\"><title>3&#45;&gt;5</title>\n",
+        "<g id=\"edge29\" class=\"edge\"><title>3&#45;&gt;5</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M244.557,-319.891C253.147,-325.628 263.482,-331.538 273.74,-335 413.521,-382.177 592.763,-380.822 666.026,-377.85\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"673.194,-377.54 666.336,-380.989 669.697,-377.691 666.2,-377.842 666.2,-377.842 666.2,-377.842 669.697,-377.691 666.064,-374.695 673.194,-377.54 673.194,-377.54\"/>\n",
         "<text text-anchor=\"start\" x=\"433.48\" y=\"-378.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; c</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;1 -->\n",
-        "<g id=\"edge12\" class=\"edge\"><title>3&#45;&gt;1</title>\n",
+        "<g id=\"edge26\" class=\"edge\"><title>3&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M247.674,-293.371C275.775,-280.891 322.431,-260.17 353.104,-246.548\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"359.774,-243.586 354.655,-249.306 356.575,-245.007 353.376,-246.427 353.376,-246.427 353.376,-246.427 356.575,-245.007 352.098,-243.548 359.774,-243.586 359.774,-243.586\"/>\n",
         "<text text-anchor=\"start\" x=\"273.74\" y=\"-285.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;3 -->\n",
-        "<g id=\"edge16\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
+        "<g id=\"edge30\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M207.906,-326.625C205.623,-338.324 210.568,-348.87 222.74,-348.87 232.344,-348.87 237.449,-342.304 238.054,-333.787\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"237.575,-326.625 241.185,-333.399 237.808,-330.118 238.042,-333.61 238.042,-333.61 238.042,-333.61 237.808,-330.118 234.899,-333.82 237.575,-326.625 237.575,-326.625\"/>\n",
         "<text text-anchor=\"start\" x=\"191.74\" y=\"-352.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
+        "<!-- 6&#45;&gt;0 -->\n",
+        "<g id=\"edge25\" class=\"edge\"><title>6&#45;&gt;0</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M517.877,-180.201C510.652,-179.292 502.773,-178.454 495.48,-178 466.204,-176.177 458.793,-176.901 429.48,-178 287.074,-183.337 248.74,-170.58 109.74,-202 105.348,-202.993 100.814,-204.346 96.4013,-205.859\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"89.6066,-208.338 95.1027,-202.98 92.8946,-207.139 96.1825,-205.939 96.1825,-205.939 96.1825,-205.939 92.8946,-207.139 97.2624,-208.898 89.6066,-208.338 89.6066,-208.338\"/>\n",
+        "<text text-anchor=\"start\" x=\"286.74\" y=\"-184.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; !c</text>\n",
+        "</g>\n",
+        "<!-- 6&#45;&gt;2 -->\n",
+        "<g id=\"edge24\" class=\"edge\"><title>6&#45;&gt;2</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M559.817,-161.694C568.196,-150.698 579.81,-138.442 593.48,-132 695.067,-84.1267 832.938,-108.053 899.306,-124.238\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"906.271,-125.973 898.717,-127.338 902.875,-125.127 899.479,-124.281 899.479,-124.281 899.479,-124.281 902.875,-125.127 900.24,-121.225 906.271,-125.973 906.271,-125.973\"/>\n",
+        "<text text-anchor=\"start\" x=\"749.98\" y=\"-109.8\" font-family=\"Lato\" font-size=\"14.00\">!a &amp; c</text>\n",
+        "</g>\n",
+        "<!-- 6&#45;&gt;4 -->\n",
+        "<g id=\"edge23\" class=\"edge\"><title>6&#45;&gt;4</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M567.523,-170.16C603.954,-149.185 678.363,-114.459 735.35,-141 771.701,-157.93 799.104,-196.373 814.918,-223.71\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"818.497,-230.054 812.314,-225.505 816.777,-227.006 815.057,-223.957 815.057,-223.957 815.057,-223.957 816.777,-227.006 817.801,-222.41 818.497,-230.054 818.497,-230.054\"/>\n",
+        "<text text-anchor=\"start\" x=\"669.48\" y=\"-144.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; c</text>\n",
+        "</g>\n",
+        "<!-- 6&#45;&gt;7 -->\n",
+        "<g id=\"edge20\" class=\"edge\"><title>6&#45;&gt;7</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M571.604,-185.866C597.679,-187.728 637.841,-190.597 666.188,-192.622\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"673.486,-193.143 666.279,-195.786 669.994,-192.894 666.503,-192.644 666.503,-192.644 666.503,-192.644 669.994,-192.894 666.728,-189.502 673.486,-193.143 673.486,-193.143\"/>\n",
+        "<text text-anchor=\"start\" x=\"593.48\" y=\"-195.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; c</text>\n",
+        "</g>\n",
+        "<!-- 6&#45;&gt;1 -->\n",
+        "<g id=\"edge22\" class=\"edge\"><title>6&#45;&gt;1</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M517.453,-181.748C493.585,-180.713 457.758,-181.807 429.48,-194 421.886,-197.275 414.697,-202.393 408.421,-207.856\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"402.928,-212.927 405.934,-205.865 405.5,-210.553 408.071,-208.179 408.071,-208.179 408.071,-208.179 405.5,-210.553 410.208,-210.493 402.928,-212.927 402.928,-212.927\"/>\n",
+        "<text text-anchor=\"start\" x=\"429.48\" y=\"-197.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !b &amp; !c</text>\n",
+        "</g>\n",
+        "<!-- 6&#45;&gt;6 -->\n",
+        "<g id=\"edge21\" class=\"edge\"><title>6&#45;&gt;6</title>\n",
+        "<path fill=\"none\" stroke=\"black\" d=\"M530.287,-207.087C528.323,-218.6 533.054,-228.87 544.48,-228.87 553.407,-228.87 558.247,-222.602 559.001,-214.369\"/>\n",
+        "<polygon fill=\"black\" stroke=\"black\" points=\"558.673,-207.087 562.135,-213.938 558.831,-210.583 558.988,-214.079 558.988,-214.079 558.988,-214.079 558.831,-210.583 555.841,-214.221 558.673,-207.087 558.673,-207.087\"/>\n",
+        "<text text-anchor=\"start\" x=\"513.48\" y=\"-232.67\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
+        "</g>\n",
         "</g>\n",
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f733338d1e0> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd270281240> >"
        ]
       }
      ],
@@ -4212,7 +4211,7 @@
         "<polygon fill=\"black\" stroke=\"black\" points=\"37.9419,-41 30.9419,-44.1501 34.4419,-41 30.9419,-41.0001 30.9419,-41.0001 30.9419,-41.0001 34.4419,-41 30.9418,-37.8501 37.9419,-41 37.9419,-41\"/>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;0 -->\n",
-        "<g id=\"edge2\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
+        "<g id=\"edge6\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M49.6208,-58.0373C48.3189,-67.8579 50.4453,-77 56,-77 60.166,-77 62.4036,-71.8576 62.7128,-65.1433\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"62.3792,-58.0373 65.8541,-64.8818 62.5434,-61.5335 62.7076,-65.0296 62.7076,-65.0296 62.7076,-65.0296 62.5434,-61.5335 59.561,-65.1774 62.3792,-58.0373 62.3792,-58.0373\"/>\n",
         "<text text-anchor=\"start\" x=\"38\" y=\"-80.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
@@ -4223,7 +4222,7 @@
         "<text text-anchor=\"middle\" x=\"190\" y=\"-123.3\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;1 -->\n",
-        "<g id=\"edge3\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
+        "<g id=\"edge4\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M71.3776,-50.3672C94.7607,-65.6017 141.128,-95.8104 168.136,-113.407\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"174.237,-117.382 166.653,-116.2 171.305,-115.471 168.372,-113.561 168.372,-113.561 168.372,-113.561 171.305,-115.471 170.092,-110.921 174.237,-117.382 174.237,-117.382\"/>\n",
         "<text text-anchor=\"start\" x=\"107\" y=\"-106.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; c</text>\n",
@@ -4234,19 +4233,19 @@
         "<text text-anchor=\"middle\" x=\"190\" y=\"-30.3\" font-family=\"Lato\" font-size=\"14.00\">2</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;2 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
+        "<g id=\"edge5\" class=\"edge\"><title>0&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M73.9865,-40.0992C97.0267,-38.8774 138.324,-36.6874 164.657,-35.2909\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"171.66,-34.9196 164.836,-38.4359 168.164,-35.105 164.669,-35.2904 164.669,-35.2904 164.669,-35.2904 168.164,-35.105 164.503,-32.1448 171.66,-34.9196 171.66,-34.9196\"/>\n",
         "<text text-anchor=\"start\" x=\"92\" y=\"-43.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;1 -->\n",
-        "<g id=\"edge5\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
+        "<g id=\"edge2\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M179.087,-141.417C175.276,-152.166 178.914,-163 190,-163 198.661,-163 202.776,-156.387 202.344,-148.369\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"200.913,-141.417 205.41,-147.637 201.619,-144.845 202.325,-148.273 202.325,-148.273 202.325,-148.273 201.619,-144.845 199.239,-148.908 200.913,-141.417 200.913,-141.417\"/>\n",
         "<text text-anchor=\"middle\" x=\"190\" y=\"-166.8\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;2 -->\n",
-        "<g id=\"edge6\" class=\"edge\"><title>2&#45;&gt;2</title>\n",
+        "<g id=\"edge3\" class=\"edge\"><title>2&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M179.087,-48.4167C175.276,-59.166 178.914,-70 190,-70 198.661,-70 202.776,-63.3875 202.344,-55.3688\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"200.913,-48.4167 205.41,-54.6375 201.619,-51.8447 202.325,-55.2728 202.325,-55.2728 202.325,-55.2728 201.619,-51.8447 199.239,-55.9082 200.913,-48.4167 200.913,-48.4167\"/>\n",
         "<text text-anchor=\"start\" x=\"185.5\" y=\"-73.8\" font-family=\"Lato\" font-size=\"14.00\">b</text>\n",
@@ -4255,7 +4254,7 @@
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f733338d360> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd270281870> >"
        ]
       }
      ],
@@ -4320,7 +4319,7 @@
         "<polygon fill=\"black\" stroke=\"black\" points=\"37.8616,-43 30.8617,-46.1501 34.3616,-43 30.8616,-43.0001 30.8616,-43.0001 30.8616,-43.0001 34.3616,-43 30.8616,-39.8501 37.8616,-43 37.8616,-43\"/>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;0 -->\n",
-        "<g id=\"edge2\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
+        "<g id=\"edge4\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M56.6704,-68.8213C56.2072,-79.1776 58.9404,-87.8701 64.8701,-87.8701 69.3173,-87.8701 71.9666,-82.9805 72.8178,-76.1667\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"73.0697,-68.8213 75.9779,-75.9252 72.9497,-72.3193 72.8297,-75.8172 72.8297,-75.8172 72.8297,-75.8172 72.9497,-72.3193 69.6816,-75.7092 73.0697,-68.8213 73.0697,-68.8213\"/>\n",
         "<text text-anchor=\"start\" x=\"46.8701\" y=\"-91.6701\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
@@ -4338,7 +4337,7 @@
         "<text text-anchor=\"start\" x=\"109.74\" y=\"-46.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; b &amp; !c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;1 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
+        "<g id=\"edge2\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M203.074,-66.5464C201.403,-77.8722 205.915,-87.8701 216.61,-87.8701 224.966,-87.8701 229.548,-81.7678 230.355,-73.6976\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"230.146,-66.5464 233.5,-73.4513 230.249,-70.0449 230.351,-73.5434 230.351,-73.5434 230.351,-73.5434 230.249,-70.0449 227.202,-73.6355 230.146,-66.5464 230.146,-66.5464\"/>\n",
         "<text text-anchor=\"start\" x=\"212.11\" y=\"-91.6701\" font-family=\"Lato\" font-size=\"14.00\">b</text>\n",
@@ -4347,7 +4346,7 @@
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f733338d3c0> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd270264270> >"
        ]
       },
       {
@@ -4386,7 +4385,7 @@
         "<polygon fill=\"black\" stroke=\"black\" points=\"37.9419,-43 30.9419,-46.1501 34.4419,-43 30.9419,-43.0001 30.9419,-43.0001 30.9419,-43.0001 34.4419,-43 30.9418,-39.8501 37.9419,-43 37.9419,-43\"/>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;0 -->\n",
-        "<g id=\"edge2\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
+        "<g id=\"edge4\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M49.6208,-60.0373C48.3189,-69.8579 50.4453,-79 56,-79 60.166,-79 62.4036,-73.8576 62.7128,-67.1433\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"62.3792,-60.0373 65.8541,-66.8818 62.5434,-63.5335 62.7076,-67.0296 62.7076,-67.0296 62.7076,-67.0296 62.5434,-63.5335 59.561,-67.1774 62.3792,-60.0373 62.3792,-60.0373\"/>\n",
         "<text text-anchor=\"start\" x=\"38\" y=\"-82.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
@@ -4404,7 +4403,7 @@
         "<text text-anchor=\"start\" x=\"92\" y=\"-46.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;1 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
+        "<g id=\"edge2\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M157.755,-67.9167C156.845,-78.6664 160.55,-87.8701 168.87,-87.8701 175.24,-87.8701 178.905,-82.475 179.865,-75.1217\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"179.985,-67.9167 183.018,-74.9686 179.927,-71.4162 179.868,-74.9158 179.868,-74.9158 179.868,-74.9158 179.927,-71.4162 176.719,-74.863 179.985,-67.9167 179.985,-67.9167\"/>\n",
         "<text text-anchor=\"middle\" x=\"168.87\" y=\"-91.6701\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
@@ -4413,7 +4412,7 @@
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f733338d3c0> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd270264270> >"
        ]
       }
      ],
@@ -4472,7 +4471,7 @@
         "<polygon fill=\"black\" stroke=\"black\" points=\"37.9419,-43 30.9419,-46.1501 34.4419,-43 30.9419,-43.0001 30.9419,-43.0001 30.9419,-43.0001 34.4419,-43 30.9418,-39.8501 37.9419,-43 37.9419,-43\"/>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;0 -->\n",
-        "<g id=\"edge2\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
+        "<g id=\"edge4\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M49.6208,-60.0373C48.3189,-69.8579 50.4453,-79 56,-79 60.166,-79 62.4036,-73.8576 62.7128,-67.1433\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"62.3792,-60.0373 65.8541,-66.8818 62.5434,-63.5335 62.7076,-67.0296 62.7076,-67.0296 62.7076,-67.0296 62.5434,-63.5335 59.561,-67.1774 62.3792,-60.0373 62.3792,-60.0373\"/>\n",
         "<text text-anchor=\"start\" x=\"38\" y=\"-82.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; !c</text>\n",
@@ -4490,7 +4489,7 @@
         "<text text-anchor=\"start\" x=\"92\" y=\"-46.8\" font-family=\"Lato\" font-size=\"14.00\">a &amp; c</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;1 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
+        "<g id=\"edge2\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M157.755,-67.9167C156.845,-78.6664 160.55,-87.8701 168.87,-87.8701 175.24,-87.8701 178.905,-82.475 179.865,-75.1217\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"179.985,-67.9167 183.018,-74.9686 179.927,-71.4162 179.868,-74.9158 179.868,-74.9158 179.868,-74.9158 179.927,-71.4162 176.719,-74.863 179.985,-67.9167 179.985,-67.9167\"/>\n",
         "<text text-anchor=\"middle\" x=\"168.87\" y=\"-91.6701\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
@@ -4499,7 +4498,7 @@
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f733338d420> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd270264300> >"
        ]
       }
      ],
@@ -4592,7 +4591,7 @@
         "<polygon fill=\"black\" stroke=\"black\" points=\"37.9419,-42 30.9419,-45.1501 34.4419,-42 30.9419,-42.0001 30.9419,-42.0001 30.9419,-42.0001 34.4419,-42 30.9418,-38.8501 37.9419,-42 37.9419,-42\"/>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;0 -->\n",
-        "<g id=\"edge2\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
+        "<g id=\"edge7\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M49.6208,-59.0373C48.3189,-68.8579 50.4453,-78 56,-78 60.166,-78 62.4036,-72.8576 62.7128,-66.1433\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"62.3792,-59.0373 65.8541,-65.8818 62.5434,-62.5335 62.7076,-66.0296 62.7076,-66.0296 62.7076,-66.0296 62.5434,-62.5335 59.561,-66.1774 62.3792,-59.0373 62.3792,-59.0373\"/>\n",
         "<text text-anchor=\"start\" x=\"52.5\" y=\"-81.8\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
@@ -4603,7 +4602,7 @@
         "<text text-anchor=\"middle\" x=\"139\" y=\"-38.3\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;1 -->\n",
-        "<g id=\"edge3\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
+        "<g id=\"edge8\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M74.178,-42C85.6688,-42 100.959,-42 113.693,-42\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"120.847,-42 113.847,-45.1501 117.347,-42 113.847,-42.0001 113.847,-42.0001 113.847,-42.0001 117.347,-42 113.847,-38.8501 120.847,-42 120.847,-42\"/>\n",
         "<text text-anchor=\"start\" x=\"92\" y=\"-45.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
@@ -4614,14 +4613,14 @@
         "<text text-anchor=\"middle\" x=\"310\" y=\"-31.3\" font-family=\"Lato\" font-size=\"14.00\">3</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;3 -->\n",
-        "<g id=\"edge8\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
+        "<g id=\"edge2\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M302.969,-51.6641C301.406,-61.625 303.75,-71 310,-71 314.688,-71 317.178,-65.7266 317.471,-58.8876\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"317.031,-51.6641 320.601,-58.4598 317.244,-55.1576 317.456,-58.6511 317.456,-58.6511 317.456,-58.6511 317.244,-55.1576 314.312,-58.8425 317.031,-51.6641 317.031,-51.6641\"/>\n",
         "<text text-anchor=\"start\" x=\"305.5\" y=\"-89.8\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "<text text-anchor=\"start\" x=\"302\" y=\"-74.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;1 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
+        "<g id=\"edge3\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M131.969,-58.6641C130.406,-68.625 132.75,-78 139,-78 143.688,-78 146.178,-72.7266 146.471,-65.8876\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"146.031,-58.6641 149.601,-65.4598 146.244,-62.1576 146.456,-65.6511 146.456,-65.6511 146.456,-65.6511 146.244,-62.1576 143.312,-65.8425 146.031,-58.6641 146.031,-58.6641\"/>\n",
         "<text text-anchor=\"start\" x=\"135.5\" y=\"-81.8\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
@@ -4632,20 +4631,20 @@
         "<text text-anchor=\"middle\" x=\"227\" y=\"-31.3\" font-family=\"Lato\" font-size=\"14.00\">2</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;2 -->\n",
-        "<g id=\"edge5\" class=\"edge\"><title>1&#45;&gt;2</title>\n",
+        "<g id=\"edge4\" class=\"edge\"><title>1&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M156.634,-37.9759C162.411,-36.7645 168.957,-35.5984 175,-35 183.723,-34.1363 193.326,-33.9406 201.825,-34.0254\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"208.959,-34.1624 201.899,-37.1773 205.459,-34.0952 201.96,-34.0279 201.96,-34.0279 201.96,-34.0279 205.459,-34.0952 202.02,-30.8785 208.959,-34.1624 208.959,-34.1624\"/>\n",
         "<text text-anchor=\"start\" x=\"177.5\" y=\"-53.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "<text text-anchor=\"start\" x=\"175\" y=\"-38.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;3 -->\n",
-        "<g id=\"edge7\" class=\"edge\"><title>2&#45;&gt;3</title>\n",
+        "<g id=\"edge6\" class=\"edge\"><title>2&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M245.178,-35C256.669,-35 271.959,-35 284.693,-35\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"291.847,-35 284.847,-38.1501 288.347,-35 284.847,-35.0001 284.847,-35.0001 284.847,-35.0001 288.347,-35 284.847,-31.8501 291.847,-35 291.847,-35\"/>\n",
         "<text text-anchor=\"start\" x=\"263\" y=\"-38.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;1 -->\n",
-        "<g id=\"edge6\" class=\"edge\"><title>2&#45;&gt;1</title>\n",
+        "<g id=\"edge5\" class=\"edge\"><title>2&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M214.797,-48.2695C208.535,-54.6404 200.157,-61.6125 191,-65 180.09,-69.0359 168.226,-64.2616 158.688,-58.0371\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"152.79,-53.8154 160.315,-55.3282 155.636,-55.8525 158.482,-57.8896 158.482,-57.8896 158.482,-57.8896 155.636,-55.8525 156.648,-60.4511 152.79,-53.8154 152.79,-53.8154\"/>\n",
         "<text text-anchor=\"start\" x=\"179.5\" y=\"-69.8\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
@@ -4654,7 +4653,7 @@
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f733338d4b0> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd270264420> >"
        ]
       }
      ],
@@ -4722,7 +4721,7 @@
         "<polygon fill=\"black\" stroke=\"black\" points=\"37.9419,-35 30.9419,-38.1501 34.4419,-35 30.9419,-35.0001 30.9419,-35.0001 30.9419,-35.0001 34.4419,-35 30.9418,-31.8501 37.9419,-35 37.9419,-35\"/>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;0 -->\n",
-        "<g id=\"edge2\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
+        "<g id=\"edge7\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M49.6208,-52.0373C48.3189,-61.8579 50.4453,-71 56,-71 60.166,-71 62.4036,-65.8576 62.7128,-59.1433\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"62.3792,-52.0373 65.8541,-58.8818 62.5434,-55.5335 62.7076,-59.0296 62.7076,-59.0296 62.7076,-59.0296 62.5434,-55.5335 59.561,-59.1774 62.3792,-52.0373 62.3792,-52.0373\"/>\n",
         "<text text-anchor=\"start\" x=\"52.5\" y=\"-74.8\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
@@ -4733,7 +4732,7 @@
         "<text text-anchor=\"middle\" x=\"139\" y=\"-31.3\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;1 -->\n",
-        "<g id=\"edge3\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
+        "<g id=\"edge8\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M74.178,-35C85.6688,-35 100.959,-35 113.693,-35\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"120.847,-35 113.847,-38.1501 117.347,-35 113.847,-35.0001 113.847,-35.0001 113.847,-35.0001 117.347,-35 113.847,-31.8501 120.847,-35 120.847,-35\"/>\n",
         "<text text-anchor=\"start\" x=\"92\" y=\"-38.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
@@ -4744,14 +4743,14 @@
         "<text text-anchor=\"middle\" x=\"305\" y=\"-47.3\" font-family=\"Lato\" font-size=\"14.00\">3</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;3 -->\n",
-        "<g id=\"edge8\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
+        "<g id=\"edge2\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M297.969,-67.6641C296.406,-77.625 298.75,-87 305,-87 309.688,-87 312.178,-81.7266 312.471,-74.8876\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"312.031,-67.6641 315.601,-74.4598 312.244,-71.1576 312.456,-74.6511 312.456,-74.6511 312.456,-74.6511 312.244,-71.1576 309.312,-74.8425 312.031,-67.6641 312.031,-67.6641\"/>\n",
         "<text text-anchor=\"start\" x=\"300.5\" y=\"-105.8\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "<text text-anchor=\"start\" x=\"297\" y=\"-90.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;1 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
+        "<g id=\"edge3\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M131.969,-51.6641C130.406,-61.625 132.75,-71 139,-71 143.688,-71 146.178,-65.7266 146.471,-58.8876\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"146.031,-51.6641 149.601,-58.4598 146.244,-55.1576 146.456,-58.6511 146.456,-58.6511 146.456,-58.6511 146.244,-55.1576 143.312,-58.8425 146.031,-51.6641 146.031,-51.6641\"/>\n",
         "<text text-anchor=\"start\" x=\"135.5\" y=\"-74.8\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
@@ -4762,19 +4761,19 @@
         "<text text-anchor=\"middle\" x=\"222\" y=\"-47.3\" font-family=\"Lato\" font-size=\"14.00\">2</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;2 -->\n",
-        "<g id=\"edge5\" class=\"edge\"><title>1&#45;&gt;2</title>\n",
+        "<g id=\"edge4\" class=\"edge\"><title>1&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M157.225,-33.2737C165.943,-32.8337 176.636,-32.9611 186,-35 190.456,-35.9701 195.023,-37.5602 199.326,-39.3707\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"205.816,-42.3398 198.14,-42.2922 202.634,-40.8838 199.451,-39.4277 199.451,-39.4277 199.451,-39.4277 202.634,-40.8838 200.761,-36.5632 205.816,-42.3398 205.816,-42.3398\"/>\n",
         "<text text-anchor=\"start\" x=\"175\" y=\"-38.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;3 -->\n",
-        "<g id=\"edge7\" class=\"edge\"><title>2&#45;&gt;3</title>\n",
+        "<g id=\"edge6\" class=\"edge\"><title>2&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M240.178,-51C251.669,-51 266.959,-51 279.693,-51\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"286.847,-51 279.847,-54.1501 283.347,-51 279.847,-51.0001 279.847,-51.0001 279.847,-51.0001 283.347,-51 279.847,-47.8501 286.847,-51 286.847,-51\"/>\n",
         "<text text-anchor=\"start\" x=\"258\" y=\"-54.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;1 -->\n",
-        "<g id=\"edge6\" class=\"edge\"><title>2&#45;&gt;1</title>\n",
+        "<g id=\"edge5\" class=\"edge\"><title>2&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M203.779,-52.1713C195.061,-52.3758 184.368,-52.0293 175,-50 170.59,-49.0448 166.044,-47.5328 161.748,-45.8287\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"155.258,-43.0453 162.932,-42.9093 158.474,-44.4248 161.691,-45.8044 161.691,-45.8044 161.691,-45.8044 158.474,-44.4248 160.449,-48.6994 155.258,-43.0453 155.258,-43.0453\"/>\n",
         "<text text-anchor=\"start\" x=\"177\" y=\"-54.8\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
@@ -4783,7 +4782,7 @@
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f734006f6c0> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd270264ed0> >"
        ]
       },
       {
@@ -4823,7 +4822,7 @@
         "<polygon fill=\"black\" stroke=\"black\" points=\"37.9419,-34 30.9419,-37.1501 34.4419,-34 30.9419,-34.0001 30.9419,-34.0001 30.9419,-34.0001 34.4419,-34 30.9418,-30.8501 37.9419,-34 37.9419,-34\"/>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;0 -->\n",
-        "<g id=\"edge2\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
+        "<g id=\"edge5\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M49.6208,-51.0373C48.3189,-60.8579 50.4453,-70 56,-70 60.166,-70 62.4036,-64.8576 62.7128,-58.1433\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"62.3792,-51.0373 65.8541,-57.8818 62.5434,-54.5335 62.7076,-58.0296 62.7076,-58.0296 62.7076,-58.0296 62.5434,-54.5335 59.561,-58.1774 62.3792,-51.0373 62.3792,-51.0373\"/>\n",
         "<text text-anchor=\"start\" x=\"52.5\" y=\"-88.8\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
@@ -4835,14 +4834,14 @@
         "<text text-anchor=\"middle\" x=\"144\" y=\"-30.3\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;1 -->\n",
-        "<g id=\"edge3\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
+        "<g id=\"edge6\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M74.4034,-34C87.1928,-34 104.732,-34 118.874,-34\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"125.916,-34 118.916,-37.1501 122.416,-34 118.916,-34.0001 118.916,-34.0001 118.916,-34.0001 122.416,-34 118.916,-30.8501 125.916,-34 125.916,-34\"/>\n",
         "<text text-anchor=\"start\" x=\"94.5\" y=\"-52.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "<text text-anchor=\"start\" x=\"92\" y=\"-37.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;1 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
+        "<g id=\"edge2\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M136.332,-50.2903C134.483,-60.3892 137.039,-70 144,-70 149.221,-70 151.964,-64.5939 152.229,-57.6304\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"151.668,-50.2903 155.342,-57.0299 151.935,-53.7801 152.201,-57.2699 152.201,-57.2699 152.201,-57.2699 151.935,-53.7801 149.06,-57.5099 151.668,-50.2903 151.668,-50.2903\"/>\n",
         "<text text-anchor=\"start\" x=\"140.5\" y=\"-88.8\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
@@ -4854,14 +4853,14 @@
         "<text text-anchor=\"middle\" x=\"232\" y=\"-56.3\" font-family=\"Lato\" font-size=\"14.00\">2</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;2 -->\n",
-        "<g id=\"edge5\" class=\"edge\"><title>1&#45;&gt;2</title>\n",
+        "<g id=\"edge3\" class=\"edge\"><title>1&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M161.96,-31.857C172.091,-31.178 185.072,-31.3793 196,-35 201.682,-36.8824 207.237,-40.037 212.188,-43.4825\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"218.099,-47.9286 210.611,-46.2386 215.302,-45.8248 212.505,-43.7211 212.505,-43.7211 212.505,-43.7211 215.302,-45.8248 214.398,-41.2036 218.099,-47.9286 218.099,-47.9286\"/>\n",
         "<text text-anchor=\"start\" x=\"182.5\" y=\"-53.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "<text text-anchor=\"start\" x=\"180\" y=\"-38.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;1 -->\n",
-        "<g id=\"edge6\" class=\"edge\"><title>2&#45;&gt;1</title>\n",
+        "<g id=\"edge4\" class=\"edge\"><title>2&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M214.424,-65.3135C204.197,-67.7042 190.981,-69.1637 180,-65 173.055,-62.3667 166.604,-57.6555 161.18,-52.6883\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"156.119,-47.7031 163.316,-50.3709 158.612,-50.1591 161.106,-52.6152 161.106,-52.6152 161.106,-52.6152 158.612,-50.1591 158.895,-54.8594 156.119,-47.7031 156.119,-47.7031\"/>\n",
         "<text text-anchor=\"start\" x=\"184.5\" y=\"-85.8\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
@@ -4871,7 +4870,7 @@
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f734006fc60> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd270264ea0> >"
        ]
       },
       {
@@ -4921,7 +4920,7 @@
         "<polygon fill=\"black\" stroke=\"black\" points=\"37.9419,-42 30.9419,-45.1501 34.4419,-42 30.9419,-42.0001 30.9419,-42.0001 30.9419,-42.0001 34.4419,-42 30.9418,-38.8501 37.9419,-42 37.9419,-42\"/>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;0 -->\n",
-        "<g id=\"edge2\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
+        "<g id=\"edge7\" class=\"edge\"><title>0&#45;&gt;0</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M49.6208,-59.0373C48.3189,-68.8579 50.4453,-78 56,-78 60.166,-78 62.4036,-72.8576 62.7128,-66.1433\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"62.3792,-59.0373 65.8541,-65.8818 62.5434,-62.5335 62.7076,-66.0296 62.7076,-66.0296 62.7076,-66.0296 62.5434,-62.5335 59.561,-66.1774 62.3792,-59.0373 62.3792,-59.0373\"/>\n",
         "<text text-anchor=\"start\" x=\"52.5\" y=\"-96.8\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
@@ -4933,7 +4932,7 @@
         "<text text-anchor=\"middle\" x=\"144\" y=\"-38.3\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "</g>\n",
         "<!-- 0&#45;&gt;1 -->\n",
-        "<g id=\"edge3\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
+        "<g id=\"edge8\" class=\"edge\"><title>0&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M74.4034,-42C87.1928,-42 104.732,-42 118.874,-42\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"125.916,-42 118.916,-45.1501 122.416,-42 118.916,-42.0001 118.916,-42.0001 118.916,-42.0001 122.416,-42 118.916,-38.8501 125.916,-42 125.916,-42\"/>\n",
         "<text text-anchor=\"start\" x=\"94.5\" y=\"-60.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
@@ -4945,14 +4944,14 @@
         "<text text-anchor=\"middle\" x=\"320\" y=\"-34.3\" font-family=\"Lato\" font-size=\"14.00\">3</text>\n",
         "</g>\n",
         "<!-- 3&#45;&gt;3 -->\n",
-        "<g id=\"edge8\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
+        "<g id=\"edge2\" class=\"edge\"><title>3&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M312.332,-54.2903C310.483,-64.3892 313.039,-74 320,-74 325.221,-74 327.964,-68.5939 328.229,-61.6304\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"327.668,-54.2903 331.342,-61.0299 327.935,-57.7801 328.201,-61.2699 328.201,-61.2699 328.201,-61.2699 327.935,-57.7801 325.06,-61.5099 327.668,-54.2903 327.668,-54.2903\"/>\n",
         "<text text-anchor=\"start\" x=\"315.5\" y=\"-92.8\" font-family=\"Lato\" font-size=\"14.00\">1</text>\n",
         "<text text-anchor=\"start\" x=\"312\" y=\"-77.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;1 -->\n",
-        "<g id=\"edge4\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
+        "<g id=\"edge3\" class=\"edge\"><title>1&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M136.332,-58.2903C134.483,-68.3892 137.039,-78 144,-78 149.221,-78 151.964,-72.5939 152.229,-65.6304\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"151.668,-58.2903 155.342,-65.0299 151.935,-61.7801 152.201,-65.2699 152.201,-65.2699 152.201,-65.2699 151.935,-61.7801 149.06,-65.5099 151.668,-58.2903 151.668,-58.2903\"/>\n",
         "<text text-anchor=\"start\" x=\"140.5\" y=\"-96.8\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
@@ -4964,21 +4963,21 @@
         "<text text-anchor=\"middle\" x=\"232\" y=\"-34.3\" font-family=\"Lato\" font-size=\"14.00\">2</text>\n",
         "</g>\n",
         "<!-- 1&#45;&gt;2 -->\n",
-        "<g id=\"edge5\" class=\"edge\"><title>1&#45;&gt;2</title>\n",
+        "<g id=\"edge4\" class=\"edge\"><title>1&#45;&gt;2</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M161.634,-37.9759C167.411,-36.7645 173.957,-35.5984 180,-35 188.738,-34.1348 198.345,-34.3874 206.842,-35.0227\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"213.973,-35.661 206.72,-38.1743 210.487,-35.3489 207.001,-35.0368 207.001,-35.0368 207.001,-35.0368 210.487,-35.3489 207.282,-31.8994 213.973,-35.661 213.973,-35.661\"/>\n",
         "<text text-anchor=\"start\" x=\"182.5\" y=\"-53.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "<text text-anchor=\"start\" x=\"180\" y=\"-38.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;3 -->\n",
-        "<g id=\"edge7\" class=\"edge\"><title>2&#45;&gt;3</title>\n",
+        "<g id=\"edge6\" class=\"edge\"><title>2&#45;&gt;3</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M250.403,-38C263.193,-38 280.732,-38 294.874,-38\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"301.916,-38 294.916,-41.1501 298.416,-38 294.916,-38.0001 294.916,-38.0001 294.916,-38.0001 298.416,-38 294.916,-34.8501 301.916,-38 301.916,-38\"/>\n",
         "<text text-anchor=\"start\" x=\"270.5\" y=\"-56.8\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
         "<text text-anchor=\"start\" x=\"268\" y=\"-41.8\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#5da5da\">\u24ff</text>\n",
         "</g>\n",
         "<!-- 2&#45;&gt;1 -->\n",
-        "<g id=\"edge6\" class=\"edge\"><title>2&#45;&gt;1</title>\n",
+        "<g id=\"edge5\" class=\"edge\"><title>2&#45;&gt;1</title>\n",
         "<path fill=\"none\" stroke=\"black\" d=\"M218.926,-50.5316C212.677,-56.1133 204.571,-62.0781 196,-65 185.14,-68.702 173.444,-64.0906 163.995,-58.0496\"/>\n",
         "<polygon fill=\"black\" stroke=\"black\" points=\"158.142,-53.9464 165.682,-55.3852 161.008,-55.9555 163.874,-57.9646 163.874,-57.9646 163.874,-57.9646 161.008,-55.9555 162.066,-60.5439 158.142,-53.9464 158.142,-53.9464\"/>\n",
         "<text text-anchor=\"start\" x=\"184.5\" y=\"-84.8\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
@@ -4988,7 +4987,7 @@
         "</svg>\n"
        ],
        "text": [
-        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f734006fc60> >"
+        "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7fd270264330> >"
        ]
       }
      ],
@@ -5001,10 +5000,19 @@
      "language": "python",
      "metadata": {},
      "outputs": [],
-     "prompt_number": 20
+     "prompt_number": null
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": null
     }
    ],
    "metadata": {}
   }
  ]
-}
\ No newline at end of file
+}