From 524edea8da75486402481ec33c51763374852a3c Mon Sep 17 00:00:00 2001
From: Philipp Schlehuber-Caissier <philipp@lrde.epita.fr>
Date: Mon, 4 Apr 2022 08:47:11 +0200
Subject: [PATCH] Propagate colors in split_2step

Reduce the amount of uncolored transitions
after split_2step by trying to color the env transitions.
This is currently only supported for parity like
acceptance conditions.

* spot/twaalgos/game.cc: Determinizatio of "colored"
game can created trivial self-loops. Fix them
* spot/twaalgos/synthesis.cc: Here
* tests/core/ltlsynt.test,
tests/python/_synthesis.ipynb,
tests/python/games.ipynb,
tests/python/synthesis.ipynb,
tests/python/synthesis.py: New and adjusted tests
---
 spot/twaalgos/game.cc         |   17 +-
 spot/twaalgos/synthesis.cc    |   47 +-
 tests/core/ltlsynt.test       |   28 +-
 tests/python/_synthesis.ipynb |    3 +-
 tests/python/games.ipynb      |   24 +-
 tests/python/synthesis.ipynb  | 3582 +++++++++++++++++----------------
 tests/python/synthesis.py     |   16 +-
 7 files changed, 1896 insertions(+), 1821 deletions(-)

diff --git a/spot/twaalgos/game.cc b/spot/twaalgos/game.cc
index 6d319eea8..e1d23e381 100644
--- a/spot/twaalgos/game.cc
+++ b/spot/twaalgos/game.cc
@@ -867,7 +867,7 @@ namespace spot
         todo.pop_back();
         seen[src] = true;
         bdd missing = bddtrue;
-        for (const auto& e: arena->out(src))
+        for (auto& e: arena->out(src))
           {
             bool osrc = (*owner)[src];
             if (complete0 && !osrc)
@@ -878,6 +878,21 @@ namespace spot
                 (*owner)[e.dst] = !osrc;
                 todo.push_back(e.dst);
               }
+            else if (e.src == e.dst)
+              {
+                if (e.cond == bddtrue)
+                  {
+                    // Fix trivial self-loop
+                    // No need to add it to seen
+                    auto inter = arena->new_state();
+                    owner->push_back(!osrc);
+                    e.dst = inter;
+                    arena->new_edge(inter, src, bddtrue, e.acc);
+                  }
+                else
+                  throw std::runtime_error("alternate_players(): "
+                                            "Nontrivial selfloop");
+              }
             else if ((*owner)[e.dst] == osrc)
               {
                 delete owner;
diff --git a/spot/twaalgos/synthesis.cc b/spot/twaalgos/synthesis.cc
index 1708923c6..ed4915c4b 100644
--- a/spot/twaalgos/synthesis.cc
+++ b/spot/twaalgos/synthesis.cc
@@ -447,9 +447,13 @@ namespace spot
   split_2step(const const_twa_graph_ptr& aut,
               const bdd& output_bdd, bool complete_env)
   {
+    assert(!aut->get_named_prop<region_t>("state-player")
+           && "aut is already split!");
     auto split = make_twa_graph(aut->get_dict());
 
     auto [has_unsat, unsat_mark] = aut->acc().unsat_mark();
+    bool max_par, odd_par, color_env;
+    color_env = aut->acc().is_parity(max_par, odd_par, true);
 
     split->copy_ap_of(aut);
     split->new_states(aut->num_states());
@@ -457,6 +461,7 @@ namespace spot
     set_synthesis_outputs(split, output_bdd);
 
     const auto use_color = has_unsat;
+    color_env &= use_color;
     if (has_unsat)
       split->copy_acceptance_of(aut);
     else
@@ -490,8 +495,10 @@ namespace spot
     // So we can first loop over the aut
     // and then deduce the owner
 
-    // a sort of hash-map for all new intermediate states
-    std::unordered_multimap<size_t, unsigned> env_hash;
+    // a sort of hash-map for all new intermediate stat
+    // second is the color of the incoming env trans
+    std::unordered_multimap<size_t,
+                            std::pair<unsigned, acc_cond::mark_t>> env_hash;
     env_hash.reserve((int) (1.5 * aut->num_states()));
     // a local map for edges leaving the current src
     // this avoids creating and then combining edges for each minterm
@@ -590,7 +597,7 @@ namespace spot
             auto range_h = env_hash.equal_range(h);
             for (auto it_h = range_h.first; it_h != range_h.second; ++it_h)
               {
-                unsigned i = it_h->second;
+                const auto& [i, this_color] = it_h->second;
                 auto out = split->out(i);
                 if (std::equal(out.begin(), out.end(),
                                dests.begin(), dests.end(),
@@ -612,9 +619,10 @@ namespace spot
                     if (it != env_edge_hash.end())
                       it->second.second |= one_letter;
                     else
-                      // Uncolored
                       env_edge_hash.emplace(i,
-                          eeh_t(split->new_edge(src, i, bddtrue), one_letter));
+                        eeh_t(split->new_edge(src, i, bddtrue,
+                                              this_color),
+                              one_letter));
                     break;
                   }
               }
@@ -622,12 +630,31 @@ namespace spot
             if (to_add)
               {
                 unsigned d = split->new_state();
-                unsigned n_e = split->new_edge(src, d, bddtrue);
-                env_hash.emplace(h, d);
+                auto this_color = acc_cond::mark_t({});
+                bool has_uncolored = false;
+                 for (const auto &t: dests)
+                  {
+                    split->new_edge(d, t->dst, t->econdout,
+                                    use_color ? t->acc
+                                              : acc_cond::mark_t({}));
+                    this_color |= t->acc;
+                    has_uncolored |= !t->acc;
+                  }
+
+                if (!color_env | has_uncolored)
+                  this_color = acc_cond::mark_t({});
+                else if (max_par)
+                  this_color =
+                    acc_cond::mark_t({this_color.min_set()-1});
+                else // min_par
+                  this_color =
+                    acc_cond::mark_t({this_color.max_set()-1});
+
+                unsigned n_e = split->new_edge(src, d, bddtrue, this_color);
+                env_hash.emplace(std::piecewise_construct,
+                                 std::forward_as_tuple(h),
+                                 std::forward_as_tuple(d, this_color));
                 env_edge_hash.emplace(d, eeh_t(n_e, one_letter));
-                for (const auto &t: dests)
-                  split->new_edge(d, t->dst, t->econdout,
-                                  use_color ? t->acc : acc_cond::mark_t({}));
               }
           } // letters
         // save locally stored condition
diff --git a/tests/core/ltlsynt.test b/tests/core/ltlsynt.test
index 8e63344b2..03f7598c9 100644
--- a/tests/core/ltlsynt.test
+++ b/tests/core/ltlsynt.test
@@ -25,23 +25,23 @@ set -e
 cat >exp <<EOF
 parity 17;
 0 1 0 7,8 "INIT";
-8 3 1 2;
-2 1 0 11,12;
-12 5 1 2,3;
-3 1 0 13,14;
-14 4 1 2,3;
-13 4 1 1,4;
+8 1 1 2;
+2 3 0 11,12;
+12 3 1 2,3;
+3 2 0 13,14;
+14 2 1 2,3;
+13 2 1 1,4;
 4 1 0 8,15;
-15 3 1 5,6;
+15 1 1 5,6;
 6 1 0 8,15;
-5 1 0 16,17;
-17 4 1 2;
-16 4 1 5,6;
+5 2 0 16,17;
+17 2 1 2;
+16 2 1 5,6;
 1 1 0 9,10;
-10 3 1 2,3;
-9 3 1 1,5;
-11 5 1 1,4;
-7 3 1 1,2;
+10 1 1 2,3;
+9 1 1 1,5;
+11 3 1 1,4;
+7 1 1 1,2;
 parity 13;
 0 1 0 1,2 "INIT";
 2 1 1 3;
diff --git a/tests/python/_synthesis.ipynb b/tests/python/_synthesis.ipynb
index b9e065c18..6952eadd3 100644
--- a/tests/python/_synthesis.ipynb
+++ b/tests/python/_synthesis.ipynb
@@ -8,7 +8,8 @@
    "outputs": [],
    "source": [
     "import spot, buddy\n",
-    "spot.setup()"
+    "spot.setup()\n",
+    "from spot.jupyter import display_inline"
    ]
   },
   {
diff --git a/tests/python/games.ipynb b/tests/python/games.ipynb
index 028ed0372..ac3490b2b 100644
--- a/tests/python/games.ipynb
+++ b/tests/python/games.ipynb
@@ -774,7 +774,7 @@
        "<path fill=\"none\" stroke=\"black\" d=\"M263.84,-69.53C269.36,-57.32 278.74,-41.62 292.66,-34.2 305.05,-27.61 320.17,-33.47 331.57,-40.37\"/>\n",
        "<polygon fill=\"black\" stroke=\"black\" points=\"337.48,-44.24 329.9,-43.04 334.55,-42.32 331.62,-40.41 331.62,-40.41 331.62,-40.41 334.55,-42.32 333.35,-37.77 337.48,-44.24 337.48,-44.24\"/>\n",
        "<text text-anchor=\"start\" x=\"297.16\" y=\"-53\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
-       "<text text-anchor=\"start\" x=\"292.66\" y=\"-38\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#ff4da0\">❶</text>\n",
+       "<text text-anchor=\"start\" x=\"292.66\" y=\"-38\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#ff7f00\">❷</text>\n",
        "</g>\n",
        "<!-- 5&#45;&gt;0 -->\n",
        "<g id=\"edge10\" class=\"edge\">\n",
@@ -804,7 +804,7 @@
        "<path fill=\"none\" stroke=\"black\" d=\"M429.13,-67.92C422.9,-62.64 414.93,-57.03 406.62,-54.2 397.16,-50.98 386.28,-50.18 376.63,-50.39\"/>\n",
        "<polygon fill=\"black\" stroke=\"black\" points=\"369.54,-50.71 376.39,-47.24 373.04,-50.55 376.53,-50.39 376.53,-50.39 376.53,-50.39 373.04,-50.55 376.68,-53.54 369.54,-50.71 369.54,-50.71\"/>\n",
        "<text text-anchor=\"start\" x=\"395.12\" y=\"-73\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
-       "<text text-anchor=\"start\" x=\"390.62\" y=\"-58\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#ff4da0\">❶</text>\n",
+       "<text text-anchor=\"start\" x=\"390.62\" y=\"-58\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#ff7f00\">❷</text>\n",
        "</g>\n",
        "<!-- 7 -->\n",
        "<g id=\"node7\" class=\"node\">\n",
@@ -818,7 +818,7 @@
        "<path fill=\"none\" stroke=\"black\" d=\"M458.24,-70.56C474.17,-60.06 499.65,-43.25 516.75,-31.98\"/>\n",
        "<polygon fill=\"black\" stroke=\"black\" points=\"522.63,-28.09 518.52,-34.58 519.71,-30.02 516.79,-31.95 516.79,-31.95 516.79,-31.95 519.71,-30.02 515.06,-29.32 522.63,-28.09 522.63,-28.09\"/>\n",
        "<text text-anchor=\"start\" x=\"481.12\" y=\"-75\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
-       "<text text-anchor=\"start\" x=\"478.62\" y=\"-60\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#ff4da0\">❶</text>\n",
+       "<text text-anchor=\"start\" x=\"478.62\" y=\"-60\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#ff7f00\">❷</text>\n",
        "</g>\n",
        "<!-- 7&#45;&gt;0 -->\n",
        "<g id=\"edge12\" class=\"edge\">\n",
@@ -928,7 +928,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f80642eee70> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f202420db10> >"
       ]
      },
      "execution_count": 8,
@@ -972,10 +972,10 @@
       "--BODY--\n",
       "State: 0\n",
       "[!1] 5 {1}\n",
-      "[1] 6 {1}\n",
+      "[1] 6 {2}\n",
       "State: 1\n",
-      "[1] 6 {1}\n",
-      "[!1] 7 {1}\n",
+      "[1] 6 {2}\n",
+      "[!1] 7 {2}\n",
       "State: 2\n",
       "[t] 8 {1}\n",
       "State: 3\n",
@@ -1134,7 +1134,7 @@
        "<path fill=\"none\" stroke=\"#e31a1c\" stroke-width=\"2\" d=\"M263.84,-69.53C269.36,-57.32 278.74,-41.62 292.66,-34.2 305.05,-27.61 320.17,-33.47 331.57,-40.37\"/>\n",
        "<polygon fill=\"#e31a1c\" stroke=\"#e31a1c\" stroke-width=\"2\" points=\"337.48,-44.24 329.9,-43.04 334.28,-42.74 331.35,-40.83 331.62,-40.41 331.9,-39.99 334.82,-41.9 333.35,-37.77 337.48,-44.24 337.48,-44.24\"/>\n",
        "<text text-anchor=\"start\" x=\"297.16\" y=\"-53\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
-       "<text text-anchor=\"start\" x=\"292.66\" y=\"-38\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#ff4da0\">❶</text>\n",
+       "<text text-anchor=\"start\" x=\"292.66\" y=\"-38\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#ff7f00\">❷</text>\n",
        "</g>\n",
        "<!-- 5&#45;&gt;0 -->\n",
        "<g id=\"edge10\" class=\"edge\">\n",
@@ -1164,7 +1164,7 @@
        "<path fill=\"none\" stroke=\"#e31a1c\" stroke-width=\"2\" d=\"M429.13,-67.92C422.9,-62.64 414.93,-57.03 406.62,-54.2 397.16,-50.98 386.28,-50.18 376.63,-50.39\"/>\n",
        "<polygon fill=\"#e31a1c\" stroke=\"#e31a1c\" stroke-width=\"2\" points=\"369.54,-50.71 376.39,-47.24 373.02,-50.05 376.51,-49.89 376.53,-50.39 376.56,-50.89 373.06,-51.05 376.68,-53.54 369.54,-50.71 369.54,-50.71\"/>\n",
        "<text text-anchor=\"start\" x=\"395.12\" y=\"-73\" font-family=\"Lato\" font-size=\"14.00\">a</text>\n",
-       "<text text-anchor=\"start\" x=\"390.62\" y=\"-58\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#ff4da0\">❶</text>\n",
+       "<text text-anchor=\"start\" x=\"390.62\" y=\"-58\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#ff7f00\">❷</text>\n",
        "</g>\n",
        "<!-- 7 -->\n",
        "<g id=\"node7\" class=\"node\">\n",
@@ -1178,7 +1178,7 @@
        "<path fill=\"none\" stroke=\"black\" d=\"M458.24,-70.56C474.17,-60.06 499.65,-43.25 516.75,-31.98\"/>\n",
        "<polygon fill=\"black\" stroke=\"black\" points=\"522.63,-28.09 518.52,-34.58 519.71,-30.02 516.79,-31.95 516.79,-31.95 516.79,-31.95 519.71,-30.02 515.06,-29.32 522.63,-28.09 522.63,-28.09\"/>\n",
        "<text text-anchor=\"start\" x=\"481.12\" y=\"-75\" font-family=\"Lato\" font-size=\"14.00\">!a</text>\n",
-       "<text text-anchor=\"start\" x=\"478.62\" y=\"-60\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#ff4da0\">❶</text>\n",
+       "<text text-anchor=\"start\" x=\"478.62\" y=\"-60\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#ff7f00\">❷</text>\n",
        "</g>\n",
        "<!-- 7&#45;&gt;0 -->\n",
        "<g id=\"edge12\" class=\"edge\">\n",
@@ -1288,7 +1288,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f806443b1b0> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f202420df90> >"
       ]
      },
      "execution_count": 11,
@@ -1324,7 +1324,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.2"
+   "version": "3.8.10"
   }
  },
  "nbformat": 4,
diff --git a/tests/python/synthesis.ipynb b/tests/python/synthesis.ipynb
index 3738e6f72..08af437e2 100644
--- a/tests/python/synthesis.ipynb
+++ b/tests/python/synthesis.ipynb
@@ -3,6 +3,7 @@
   {
    "cell_type": "code",
    "execution_count": 1,
+   "id": "7a864ea1",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -13,6 +14,7 @@
   },
   {
    "cell_type": "markdown",
+   "id": "9a294cae",
    "metadata": {},
    "source": [
     "This notebook presents functions that can be used to solve the Reactive Synthesis problem using games.\n",
@@ -37,6 +39,7 @@
   {
    "cell_type": "code",
    "execution_count": 2,
+   "id": "70429a41",
    "metadata": {},
    "outputs": [
     {
@@ -53,647 +56,647 @@
        "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n",
        "<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\"\n",
        " \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n",
-       "<!-- Generated by graphviz version 2.40.1 (20161225.0304)\n",
+       "<!-- Generated by graphviz version 2.43.0 (0)\n",
        " -->\n",
        "<!-- Pages: 1 -->\n",
-       "<svg width=\"538pt\" height=\"360pt\"\n",
-       " viewBox=\"0.00 0.00 538.00 360.00\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
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-       "<text text-anchor=\"start\" x=\"657.4378\" y=\"-975.4189\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#000000\">Fin(</text>\n",
-       "<text text-anchor=\"start\" x=\"682.4378\" y=\"-975.4189\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#ff7f00\">❷</text>\n",
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-       "<text text-anchor=\"start\" x=\"745.4378\" y=\"-975.4189\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#ff4da0\">❶</text>\n",
-       "<text text-anchor=\"start\" x=\"761.4378\" y=\"-975.4189\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#000000\">) | Fin(</text>\n",
-       "<text text-anchor=\"start\" x=\"801.4378\" y=\"-975.4189\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#1f78b4\">⓿</text>\n",
-       "<text text-anchor=\"start\" x=\"817.4378\" y=\"-975.4189\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#000000\">))</text>\n",
-       "<text text-anchor=\"start\" x=\"683.9378\" y=\"-961.4189\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#000000\">[parity max odd 3]</text>\n",
+       "<svg width=\"535pt\" height=\"360pt\"\n",
+       " viewBox=\"0.00 0.00 535.26 360.00\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
+       "<g id=\"graph0\" class=\"graph\" transform=\"scale(0.36101083032490977 0.36101083032490977) rotate(0) translate(4 993.33)\">\n",
+       "<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-993.33 1478.88,-993.33 1478.88,4 -4,4\"/>\n",
+       "<text text-anchor=\"start\" x=\"655.94\" y=\"-975.13\" font-family=\"Lato\" font-size=\"14.00\">Fin(</text>\n",
+       "<text text-anchor=\"start\" x=\"678.94\" y=\"-975.13\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#ff7f00\">❷</text>\n",
+       "<text text-anchor=\"start\" x=\"694.94\" y=\"-975.13\" font-family=\"Lato\" font-size=\"14.00\">) &amp; (Inf(</text>\n",
+       "<text text-anchor=\"start\" x=\"740.94\" y=\"-975.13\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#ff4da0\">❶</text>\n",
+       "<text text-anchor=\"start\" x=\"756.94\" y=\"-975.13\" font-family=\"Lato\" font-size=\"14.00\">) | Fin(</text>\n",
+       "<text text-anchor=\"start\" x=\"794.94\" y=\"-975.13\" font-family=\"Lato\" font-size=\"14.00\" fill=\"#1f78b4\">⓿</text>\n",
+       "<text text-anchor=\"start\" x=\"810.94\" y=\"-975.13\" font-family=\"Lato\" font-size=\"14.00\">))</text>\n",
+       "<text text-anchor=\"start\" x=\"681.94\" y=\"-961.13\" font-family=\"Lato\" font-size=\"14.00\">[parity max odd 3]</text>\n",
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     "Solving the game, is done with `solve_game()` as with any game.  There is also a version that takes a `synthesis_info` as second argument in case the time it takes has to be recorded.  Here passing `si` or not makes no difference."
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     "Once a strategy has been found, it can be extracted as an automaton and simplified using 6 different levels (the default is 2).  The output should be interpreted as a Mealy automaton, where transition have the form `(ins)&(outs)` where `ins` and `outs` are Boolean formulas representing possible inputs and outputs (they could be more than just conjunctions of atomic proposition).  Mealy machines with this type of labels are called \"separated\" in Spot."
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   {
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     "If needed, a separated Mealy machine can be turned into game shape using `split_sepearated_mealy()`, which is more efficient than `split_2step()`."
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   {
    "cell_type": "code",
    "execution_count": 5,
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       "text/plain": [
-       "<spot.aig; proxy of <Swig Object of type 'spot::aig_ptr *' at 0x7fb9646b73f0> >"
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      "metadata": {},
@@ -2718,6 +2729,7 @@
   },
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    "cell_type": "markdown",
+   "id": "d67f8bce",
    "metadata": {},
    "source": [
     "While we are at it, let us mention that you can render those circuits horizontally as follows:"
@@ -2726,6 +2738,7 @@
   {
    "cell_type": "code",
    "execution_count": 7,
+   "id": "3a363374",
    "metadata": {},
    "outputs": [
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@@ -2801,6 +2814,7 @@
   },
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    "cell_type": "markdown",
+   "id": "e4f607c3",
    "metadata": {},
    "source": [
     "To encode the circuit in the AIGER format (ASCII version) use:"
@@ -2809,6 +2823,7 @@
   {
    "cell_type": "code",
    "execution_count": 8,
+   "id": "564f7d0b",
    "metadata": {},
    "outputs": [
     {
@@ -2832,6 +2847,7 @@
   },
   {
    "cell_type": "markdown",
+   "id": "cf2d4831",
    "metadata": {},
    "source": [
     "# Adding more inputs and outputs by force"
@@ -2839,6 +2855,7 @@
   },
   {
    "cell_type": "markdown",
+   "id": "874a108e",
    "metadata": {},
    "source": [
     "It can happen that propositions declared as output are ommited in the aig circuit (either because they are not part of the specification, or because they do not appear in the winning strategy).  In that case those \n",
@@ -2850,6 +2867,7 @@
   {
    "cell_type": "code",
    "execution_count": 9,
+   "id": "1fc4c566",
    "metadata": {},
    "outputs": [
     {
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   {
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@@ -4163,6 +4187,7 @@
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   {
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  ],
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   "kernelspec": {
-   "display_name": "Python 3",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
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@@ -4778,7 +4810,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
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-   "version": "3.7.3"
+   "version": "3.8.10"
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diff --git a/tests/python/synthesis.py b/tests/python/synthesis.py
index 1b1cf4fbb..559dc2d24 100644
--- a/tests/python/synthesis.py
+++ b/tests/python/synthesis.py
@@ -37,16 +37,16 @@ Start: 0
 AP: 1 "a"
 acc-name: Streett 1
 Acceptance: 2 Fin(0) | Inf(1)
-properties: trans-labels explicit-labels state-acc colored complete
+properties: trans-labels explicit-labels trans-acc colored complete
 properties: deterministic
 spot-state-player: 0 1 1
 controllable-AP:
 --BODY--
-State: 0 {0}
-[!0] 1
-[0] 2
-State: 1 {0}
-[t] 0
-State: 2 {1}
-[t] 0
+State: 0
+[!0] 1 {0}
+[0] 2 {1}
+State: 1
+[t] 0 {0}
+State: 2
+[t] 0 {1}
 --END--""")