fix several algorithms that incorrectly preserved !weak

This massive set of changes was triggered by issue #546.
In addition to the better handling of !weak, this also adds some
weak properties in a few places.

* spot/twaalgos/product.cc (product_aux): Throw some exception
if an automaton with t or f acceptance has the !weak property.  This
is a cheap sanity check to help detect algorithms that incorrectly
assumed !weak input would necessarily become !weak output.
* spot/twaalgos/hoa.cc (print_hoa): Likewise, also do not assume
that terminal implies very-weak.
* spot/parseaut/parseaut.yy: Add several diagnostics for similar
cases.  E.g., a one-state automaton cannot be declared as !very-weak.
* tests/core/parseaut.test: Check those new diagnostics.
* spot/twa/twa.cc (twa::intersecting_run): Temporary remove the weak
property by setting it to maybe, not to false.
* spot/twaalgos/minimize.cc, spot/twaalgos/parity.cc,
spot/twaalgos/sccfilter.cc, spot/twaalgos/simulation.cc: Account for
the fact that these algorithm may in fact improve the weakness.
* spot/twaalgos/strength.cc: Only look at colors used by the
acceptance condition when deciding weakness.
* spot/twaalgos/synthesis.cc: Declare the strategy as weak.
* bin/randaut.cc: Add weak to automata with t/f acceptance.
* spot/kripke/kripke.hh: Make kripke structures as weak.
* tests/core/acc_word.test, tests/core/alternating.test,
tests/core/complement.test, tests/core/complete.test,
tests/core/ltlsynt.test, tests/core/randomize.test,
tests/core/readsave.test, tests/core/remfin.test,
tests/core/sccsimpl.test, tests/core/strength.test,
tests/core/wdba2.test, tests/ltsmin/kripke.test,
tests/python/automata-io.ipynb, tests/python/automata.ipynb,
tests/python/dbranch.py, tests/python/highlighting.ipynb,
tests/python/kripke.py, tests/python/ltsmin-dve.ipynb,
tests/python/mealy.py, tests/python/simstate.py: Adjust all these test
cases.
* NEWS: Mention the fixes.

NEWS

@@ -116,6 +116,18 @@ New in spot 2.11.6.dev  (not yet released)
     presence of unsatisifable or universal acceptance conditions that
     were not f or t.  (Part of issue #546.)
 
+  - Several algorithms were incorrectly dealing with the "!weak"
+    property.  Because they (rightly) assumed that a weak input would
+    produce a weak output, they also wrongly assumed that a non-weak
+    output would produce a non-weak output.  Unfortunately removing
+    states or edges in a non-weak automaton can lead a weak automaton.
+    The incorrect property lead to issue #546.  In addition to fixing
+    several algorithms, product() and print_hoa() will now raise an
+    exception if automaton with t or f acceptance is declared !weak.
+    (This cheap check will not catch all automata incorrectly labeled
+    by !weak, but helps detects some issues nonetheless.)
+
+
 New in spot 2.11.6  (2023-08-01)
 
   Bug fixes:

bin/randaut.cc

@@ -385,6 +385,8 @@ main(int argc, char** argv)
 
           if (opt_acceptance)
             aut->set_acceptance(accs, code);
+          if (aut->acc().is_t() || aut->acc().is_f())
+            aut->prop_weak(true);
 
           if (opt_uniq)
             {

spot/kripke/kripke.hh

@@ -1,6 +1,6 @@
 // -*- coding: utf-8 -*-
-// Copyright (C) 2009, 2010, 2013, 2014, 2016, 2017, 2019, 2020 Laboratoire
+// Copyright (C) 2009, 2010, 2013, 2014, 2016, 2017, 2019, 2020, 2023
-// de Recherche et Developpement de l'Epita
+// Laboratoire de Recherche et Developpement de l'Epita
 //
 // This file is part of Spot, a model checking library.
 //
@@ -180,6 +180,7 @@ namespace spot
     kripke(const bdd_dict_ptr& d)
       : fair_kripke(d)
       {
+        prop_weak(true);
       }
 
     virtual ~kripke();

spot/parseaut/parseaut.yy

@@ -691,6 +691,19 @@ header: format-version header-items
 		}
 	      if (t != e)
 		a->prop_terminal(t->second.val);
+              if (a->acc().is_t() || a->acc().is_f())
+                {
+                  if (w != e && !w->second.val)
+                    error(w->second.loc, "an automaton with this condition"
+                          " is necessarily weak");
+                  if (iw != e && !iw->second.val)
+                    error(iw->second.loc, "an automaton with this condition"
+                          " is necessarily inherently-weak");
+                  if (vw != e && !vw->second.val
+                      && (res.states == 0 || res.states == 1))
+                    error(vw->second.loc, "an automaton with 0 or 1 state "
+                          "is necessarily very-weak");
+                }
 	      auto u = p.find("unambiguous");
 	      if (u != e)
 		{
@@ -2743,6 +2756,17 @@ static void fix_properties(result_& r)
   if (r.acc_style == State_Acc ||
       (r.acc_style == Mixed_Acc && !r.trans_acc_seen))
     r.aut_or_ks->prop_state_acc(true);
+  if (r.aut_or_ks->acc().is_t() || r.aut_or_ks->acc().is_f())
+    {
+      r.aut_or_ks->prop_weak(true);
+      unsigned ns;
+      if (r.opts.want_kripke)
+        ns = r.h->ks->num_states();
+      else
+        ns = r.h->aut->num_states();
+      if (ns == 0 || ns == 1)
+        r.aut_or_ks->prop_very_weak(true);
+    }
 }
 
 static void check_version(const result_& r)

spot/twa/twa.cc

@@ -171,8 +171,8 @@ namespace spot
         // for weak automata, otherwise project(g1) would be unable to
         // compute the correct marks.  See issue #471.  It's OK to
         // optimize the right part if g2 is weak.
-        spot::trival g1weak = g1->prop_weak();
+        trival g1weak = g1->prop_weak();
-        std::const_pointer_cast<twa_graph>(g1)->prop_weak(false);
+        std::const_pointer_cast<twa_graph>(g1)->prop_weak(trival::maybe());
         auto run = generic_accepting_run(product(g1, g2));
         std::const_pointer_cast<twa_graph>(g1)->prop_weak(g1weak);
         if (!run)

spot/twaalgos/hoa.cc

@@ -1,5 +1,5 @@
 // -*- coding: utf-8 -*-
-// Copyright (C) 2014-2022 Laboratoire de Recherche et
+// Copyright (C) 2014-2023 Laboratoire de Recherche et
 // Developpement de l'Epita (LRDE).
 //
 // This file is part of Spot, a model checking library.
@@ -507,6 +507,11 @@ namespace spot
             }
         }
 
+    if (SPOT_UNLIKELY(aut->prop_weak().is_false()
+                      && (aut->acc().is_t() || aut->acc().is_f())))
+      throw std::runtime_error("print_hoa(): automaton is declared not weak, "
+                               "but the acceptance makes this impossible");
+
     metadata md(aut, implicit_labels, state_labels);
 
     if (acceptance == Hoa_Acceptance_States && !md.has_state_acc)
@@ -724,7 +729,7 @@ namespace spot
       }
     if (aut->prop_terminal())
       prop(" terminal");
-    if (aut->prop_very_weak() && (verbose || aut->prop_terminal() != true))
+    if (aut->prop_very_weak())
       prop(" very-weak");
     if (aut->prop_weak() && (verbose || (aut->prop_terminal() != true &&
                                          aut->prop_very_weak() != true)))

spot/twaalgos/minimize.cc

@@ -556,6 +556,16 @@ namespace spot
     // add a quick check inside minimize_dfa.
     if (a->prop_terminal())
       res->prop_terminal(true);
+    else if (a->num_states() == 1)
+      {
+        // If thie automaton has only one state, check w
+        for (auto& e: a->out(0))
+          if (e.cond == bddtrue && a->acc().accepting(e.acc))
+            {
+              res->prop_terminal(true);
+              break;
+            }
+      }
     return res;
   }
 

spot/twaalgos/parity.cc

@@ -1,5 +1,5 @@
 // -*- coding: utf-8 -*-
-// Copyright (C) 2016, 2018, 2019, 2022 Laboratoire de Recherche et
+// Copyright (C) 2016, 2018, 2019, 2022, 2023 Laboratoire de Recherche et
 // Développement de l'Epita (LRDE).
 //
 // This file is part of Spot, a model checking library.
@@ -649,6 +649,13 @@ namespace spot
             e.acc = acc_cond::mark_t({n});
         }
 
+    // Reducing the number of colors could turn a non-weak automaton
+    // into a weak one
+    if (aut->prop_weak().is_false())
+      aut->prop_weak(trival::maybe());
+    if (aut->prop_very_weak().is_false())
+      aut->prop_very_weak(trival::maybe());
+
     return aut;
   }
 }

spot/twaalgos/product.cc

@@ -27,6 +27,8 @@
 #include <unordered_map>
 #include <spot/misc/hash.hh>
 
+using namespace std::string_literals;
+
 namespace spot
 {
   namespace
@@ -102,6 +104,13 @@ namespace spot
 
     enum acc_op { and_acc, or_acc, xor_acc, xnor_acc };
 
+    [[noreturn]] static
+    void report_should_be_weak(const char* what)
+    {
+      std::string s = what + " automaton is declared not weak, "
+        "but the acceptance makes this impossible"s;
+      throw std::runtime_error(s);
+    }
 
     static
     twa_graph_ptr product_aux(const const_twa_graph_ptr& left,
@@ -128,6 +137,13 @@ namespace spot
       bool leftweak = left->prop_weak().is_true();
       bool rightweak = right->prop_weak().is_true();
 
+      if (SPOT_UNLIKELY(!leftweak && left->prop_weak().is_false()
+                        && (lacc.is_t() || lacc.is_f())))
+        report_should_be_weak("product: left");
+      if (SPOT_UNLIKELY(!rightweak && right->prop_weak().is_false()
+                        && (racc.is_t() || racc.is_f())))
+        report_should_be_weak("product: right");
+
       // The conjunction of two co-Büchi automata is a co-Büchi automaton.
       // The disjunction of two Büchi automata is a Büchi automaton.
       //

spot/twaalgos/sccfilter.cc

@@ -1,5 +1,5 @@
 // -*- coding: utf-8 -*-
-// Copyright (C) 2009-2018 Laboratoire de Recherche et Développement
+// Copyright (C) 2009-2018, 2023 Laboratoire de Recherche et Développement
 // de l'Epita (LRDE).
 //
 // This file is part of Spot, a model checking library.
@@ -428,6 +428,15 @@ namespace spot
       res = scc_filter_apply<state_filter
                              <acc_filter_mask<false, true>>>(aut, given_si);
     res->prop_copy(aut, { true, true, false, true, false, true });
+    if (res->num_edges() != aut->num_edges())
+      {
+        if (res->prop_weak().is_false())
+          res->prop_weak(trival::maybe());
+        if (res->prop_very_weak().is_false())
+          res->prop_very_weak(trival::maybe());
+      }
+    if (res->prop_weak().is_true() && res->num_states() <= 1)
+      res->prop_very_weak(true);
     return res;
   }
 
@@ -496,6 +505,16 @@ namespace spot
         if (!given_si)
           delete si;
       }
+    else
+      if (res->num_edges() != aut->num_edges())
+        {
+          if (res->prop_weak().is_false())
+            res->prop_weak(trival::maybe());
+          if (res->prop_very_weak().is_false())
+            res->prop_very_weak(trival::maybe());
+        }
+    if (res->prop_weak().is_true() && res->num_states() <= 1)
+      res->prop_very_weak(true);
     return res;
   }
 

spot/twaalgos/simulation.cc

@@ -761,11 +761,19 @@ namespace spot
         delete gb;
         res->prop_copy(original_,
                        { false, // state-based acc forced below
-                         true,  // weakness preserved,
+                         true,  // weakness preserved
                          false, true, // determinism improved
                          true, // completeness preserved
                          true, // stutter inv.
                        });
+
+        // weakness can actually be improved
+        if (res->prop_weak().is_false())
+          res->prop_weak(trival::maybe());
+        if (res->prop_very_weak().is_false())
+          res->prop_very_weak(trival::maybe());
+        if (res->prop_inherently_weak().is_false())
+          res->prop_inherently_weak(trival::maybe());
         // !unambiguous and !semi-deterministic are not preserved
         if (!Cosimulation && nb_minato == nb_minterms)
           // Note that nb_minato != nb_minterms does not imply

spot/twaalgos/strength.cc

@@ -1,6 +1,6 @@
 // -*- coding: utf-8 -*-
-// Copyright (C) 2010-2011, 2013-2018 Laboratoire de Recherche et
+// Copyright (C) 2010-2011, 2013-2018, 2023 Laboratoire de Recherche
-// Développement de l'Epita (LRDE)
+// et Développement de l'Epita (LRDE)
 //
 // This file is part of Spot, a model checking library.
 //
@@ -43,6 +43,8 @@ namespace spot
       if (inweak)
         si->determine_unknown_acceptance();
 
+      acc_cond::mark_t mask = aut->get_acceptance().used_sets();
+
       bool is_inweak = true;
       bool is_weak = true;
       bool is_single_state_scc = true;
@@ -66,9 +68,9 @@ namespace spot
                   if (first)
                     {
                       first = false;
-                      m = t.acc;
+                      m = t.acc & mask;
                     }
-                  else if (m != t.acc)
+                  else if (m != (t.acc & mask))
                     {
                       is_weak = false;
                       if (!inweak)

spot/twaalgos/synthesis.cc

@@ -1469,6 +1469,9 @@ namespace spot
         edge.acc = {};
       }
       res->set_acceptance(acc_cond::acc_code::t());
+      res->prop_weak(true);
+      if (res->prop_terminal().is_false())
+        res->prop_terminal(trival::maybe());
       res->set_named_prop<bdd>("synthesis-outputs", new bdd(output_bdd));
 
       return ret_sol_exists(res);
@@ -1478,6 +1481,7 @@ namespace spot
       if (!want_strategy)
         return ret_sol_exists(nullptr);
       auto res = make_twa_graph(dict);
+      res->prop_weak(true);
 
       bdd output_bdd = bddtrue;
       std::set<formula> ins_f = form2props.aps_of(f_g).first;

tests/core/acc_word.test

@@ -79,7 +79,7 @@ AP: 2 "b" "a"
 acc-name: Buchi
 Acceptance: 1 Inf(0)
 properties: trans-labels explicit-labels state-acc !complete
-properties: deterministic stutter-invariant terminal
+properties: deterministic stutter-invariant terminal very-weak
 spot.highlight.edges: 1 1 2 1
 --BODY--
 State: 0 {0}
@@ -113,7 +113,7 @@ AP: 2 "a" "b"
 acc-name: Buchi
 Acceptance: 1 Inf(0)
 properties: trans-labels explicit-labels state-acc complete
-properties: deterministic stutter-invariant terminal
+properties: deterministic stutter-invariant terminal very-weak
 spot.highlight.edges: 1 3 2 3 5 3 6 3 7 2 8 2
 --BODY--
 State: 0 {0}

tests/core/alternating.test

@@ -472,7 +472,7 @@ Start: 0
 AP: 1 "a"
 acc-name: all
 Acceptance: 0 t
-properties: trans-labels explicit-labels state-acc deterministic
+properties: trans-labels explicit-labels state-acc deterministic weak
 --BODY--
 State: 0
 [!0] 1

tests/core/complement.test

@@ -1,7 +1,7 @@
 #!/bin/sh
 # -*- coding: utf-8 -*-
-# Copyright (C) 2015-2019, 2021 Laboratoire de Recherche et Développement de
+# Copyright (C) 2015-2019, 2021, 2023 Laboratoire de Recherche et
-# l'Epita (LRDE).
+# Développement de l'Epita (LRDE).
 #
 # This file is part of Spot, a model checking library.
 #
@@ -41,7 +41,7 @@ AP: 0
 acc-name: all
 Acceptance: 0 t
 properties: trans-labels explicit-labels state-acc complete
-properties: deterministic
+properties: deterministic very-weak
 --BODY--
 State: 0
 [t] 0
@@ -74,7 +74,7 @@ AP: 1 "a"
 acc-name: co-Buchi
 Acceptance: 1 Fin(0)
 properties: trans-labels explicit-labels state-acc complete
-properties: deterministic weak
+properties: deterministic very-weak
 --BODY--
 State: 0
 [0] 2
@@ -93,7 +93,7 @@ AP: 1 "a"
 acc-name: co-Buchi
 Acceptance: 1 Fin(0)
 properties: trans-labels explicit-labels state-acc complete
-properties: deterministic stutter-invariant weak
+properties: deterministic stutter-invariant very-weak
 --BODY--
 State: 0 {0}
 [t] 0

tests/core/complete.test

@@ -1,6 +1,6 @@
 #! /bin/sh
 # -*- coding: utf-8 -*-
-# Copyright (C) 2015-2017, 2022 Laboratoire de Recherche et Développement
+# Copyright (C) 2015-2017, 2022, 2023 Laboratoire de Recherche et Développement
 # de l'Epita (LRDE).
 #
 # This file is part of Spot, a model checking library.
@@ -151,7 +151,7 @@ AP: 1 "a"
 acc-name: Buchi
 Acceptance: 1 Inf(0)
 properties: trans-labels explicit-labels state-acc complete
-properties: deterministic
+properties: deterministic weak
 --BODY--
 State: 0 {0}
 [0] 1
@@ -169,7 +169,7 @@ AP: 1 "a"
 acc-name: none
 Acceptance: 0 f
 properties: trans-labels explicit-labels state-acc complete
-properties: deterministic
+properties: deterministic weak
 --BODY--
 State: 0
 [t] 1

tests/core/ltlsynt.test

@@ -611,7 +611,7 @@ Start: 0
 AP: 3 "c" "a" "b"
 acc-name: all
 Acceptance: 0 t
-properties: trans-labels explicit-labels state-acc deterministic
+properties: trans-labels explicit-labels state-acc deterministic weak
 controllable-AP: 0
 --BODY--
 State: 0

tests/core/parseaut.test

@@ -1,6 +1,6 @@
 #!/bin/sh
 # -*- coding: utf-8 -*-
-# Copyright (C) 2014-2018, 2020-2022 Laboratoire de Recherche et
+# Copyright (C) 2014-2018, 2020-2023 Laboratoire de Recherche et
 # Développement de l'Epita (LRDE).
 #
 # This file is part of Spot, a model checking library.
@@ -664,7 +664,7 @@ Start: 0
 AP: 1 "a"
 acc-name: all
 Acceptance: 0 t
-properties: trans-labels explicit-labels state-acc deterministic
+properties: trans-labels explicit-labels state-acc deterministic weak
 --BODY--
 State: 0
 [0] 1
@@ -1322,7 +1322,7 @@ AP: 2 "a" "b"
 acc-name: all
 Acceptance: 0 t
 properties: trans-labels explicit-labels state-acc complete
-properties: deterministic
+properties: deterministic weak
 --BODY--
 State: 0
 [0&!1] 0
@@ -1778,7 +1778,7 @@ Start: 0
 AP: 1 "a"
 Acceptance: 1 t
 properties: trans-labels explicit-labels trans-acc complete
-properties: deterministic
+properties: deterministic weak
 --BODY--
 State: 0 "F(a)"
 [0] 1 {0}
@@ -1844,7 +1844,7 @@ AP: 1 "a"
 acc-name: all
 Acceptance: 0 t
 properties: trans-labels explicit-labels state-acc complete
-properties: deterministic
+properties: deterministic weak
 --BODY--
 State: 0 "F(a)"
 [0] 1
@@ -2079,6 +2079,15 @@ properties: complete !weak very-weak
 --BODY--
 State: 0 0
 --END--
+HOA: v1
+States: 1
+Start: 0
+AP: 0
+Acceptance: 0 t
+properties: complete !very-weak
+--BODY--
+State: 0 0
+--END--
 EOF
 
 expecterr input <<EOF
@@ -2091,14 +2100,18 @@ input:36.36-43: 'properties: terminal' contradicts...
 input:36.13-28: ... 'properties: !inherently-weak' given here
 input:36.36-43: 'properties: terminal' contradicts...
 input:36.30-34: ... 'properties: !weak' given here
+input:36.30-34: an automaton with this condition is necessarily weak
+input:36.13-28: an automaton with this condition is necessarily inherently-weak
 input:46.13-28: 'properties: !inherently-weak' contradicts...
 input:46.35-43: ... 'properties: very-weak' given here
 input:46.30-33: 'properties: weak' contradicts...
 input:46.13-28: ... 'properties: !inherently-weak' given here
 input:55.22-26: 'properties: !weak' contradicts...
 input:55.28-36: ... 'properties: very-weak' given here
+input:55.22-26: an automaton with this condition is necessarily weak
 input:51.1-9: state 1 is unused and undefined
 input:55.13-20: automaton is incomplete because it has undefined states
+input:64.22-31: an automaton with 0 or 1 state is necessarily very-weak
 EOF
 
 

tests/core/randomize.test

@@ -1,7 +1,7 @@
 #!/bin/sh
 # -*- coding: utf-8 -*-
-# Copyright (C) 2014, 2015, 2017, 2018 Laboratoire de Recherche et
+# Copyright (C) 2014, 2015, 2017-2018, 2023 Laboratoire de Recherche
-# Développement de l'Epita (LRDE).
+# et Développement de l'Epita (LRDE).
 #
 # This file is part of Spot, a model checking library.
 #
@@ -113,7 +113,7 @@ Start: 3
 AP: 4 "a" "b" "c" "d"
 acc-name: all
 Acceptance: 0 t
-properties: trans-labels explicit-labels state-acc
+properties: trans-labels explicit-labels state-acc weak
 --BODY--
 State: 0 "s4"
 [3] 0

tests/core/readsave.test

@@ -636,7 +636,7 @@ Start: 1
 AP: 2 "p0" "p1"
 acc-name: all
 Acceptance: 0 t
-properties: trans-labels explicit-labels state-acc
+properties: trans-labels explicit-labels state-acc weak
 --BODY--
 State: 0
 State: 1
@@ -676,7 +676,7 @@ Start: 0
 AP: 2 "p0" "p1"
 acc-name: all
 Acceptance: 0 t
-properties: trans-labels explicit-labels state-acc deterministic
+properties: trans-labels explicit-labels state-acc deterministic weak
 --BODY--
 State: 0
 [!0&!1] 1
@@ -698,7 +698,7 @@ Start: 0
 AP: 2 "p0" "p1"
 acc-name: all
 Acceptance: 0 t
-properties: state-labels explicit-labels state-acc deterministic
+properties: state-labels explicit-labels state-acc deterministic weak
 --BODY--
 State: [!0&!1] 0
 1
@@ -745,7 +745,7 @@ Start: 0
 AP: 2 "p0" "p1"
 acc-name: all
 Acceptance: 0 t
-properties: trans-labels explicit-labels state-acc
+properties: trans-labels explicit-labels state-acc weak
 --BODY--
 State: 0
 [!0&!1] 1
@@ -762,7 +762,7 @@ Start: 0
 AP: 2 "p0" "p1"
 acc-name: all
 Acceptance: 0 t
-properties: trans-labels explicit-labels state-acc deterministic
+properties: trans-labels explicit-labels state-acc deterministic weak
 --BODY--
 State: 0
 [!0&!1] 1

tests/core/remfin.test

@@ -1,6 +1,6 @@
 #!/bin/sh
 # -*- coding: utf-8 -*-
-# Copyright (C) 2015-2018, 2020 Laboratoire de Recherche et
+# Copyright (C) 2015-2018, 2020, 2023 Laboratoire de Recherche et
 # Développement de l'Epita (LRDE).
 #
 # This file is part of Spot, a model checking library.
@@ -370,7 +370,7 @@ AP: 0
 acc-name: all
 Acceptance: 0 t
 properties: trans-labels explicit-labels state-acc complete
-properties: deterministic
+properties: deterministic very-weak
 --BODY--
 State: 0
 [t] 0
@@ -955,7 +955,7 @@ AP: 0
 acc-name: all
 Acceptance: 0 t
 properties: trans-labels explicit-labels state-acc complete
-properties: deterministic
+properties: deterministic very-weak
 --BODY--
 State: 0
 [t] 0

tests/core/sccsimpl.test

@@ -1,6 +1,6 @@
 #!/bin/sh
 # -*- coding: utf-8 -*-
-# Copyright (C) 2011, 2013, 2015, 2018, 2019 Laboratoire de Recherche
+# Copyright (C) 2011, 2013, 2015, 2018, 2019, 2023 Laboratoire de Recherche
 # et Développement de l'Epita
 #
 # This file is part of Spot, a model checking library.
@@ -316,7 +316,7 @@ AP: 1 "p0"
 acc-name: Buchi
 Acceptance: 1 Inf(0)
 properties: trans-labels explicit-labels state-acc complete
-properties: deterministic terminal
+properties: deterministic terminal very-weak
 --BODY--
 State: 0 {0}
 [t] 0
@@ -331,7 +331,7 @@ AP: 1 "p0"
 acc-name: Buchi
 Acceptance: 1 Inf(0)
 properties: trans-labels explicit-labels state-acc complete
-properties: deterministic terminal
+properties: deterministic terminal very-weak
 --BODY--
 State: 0 {0}
 [t] 0

tests/core/strength.test

@@ -1,6 +1,6 @@
 #!/bin/sh
 # -*- coding: utf-8 -*-
-# Copyright (C) 2015, 2016, 2017 Laboratoire de Recherche et Developpement
+# Copyright (C) 2015, 2016, 2017, 2023 Laboratoire de Recherche et Developpement
 # de l'Epita
 #
 # This file is part of Spot, a model checking library.
@@ -122,7 +122,7 @@ AP: 2 "a" "b"
 acc-name: Buchi
 Acceptance: 1 Inf(0)
 properties: trans-labels explicit-labels state-acc deterministic
-properties: terminal
+properties: terminal very-weak
 --BODY--
 State: 0 {0}
 [t] 0
@@ -710,7 +710,7 @@ AP: 1 "a"
 acc-name: co-Buchi
 Acceptance: 1 Fin(0)
 properties: trans-labels explicit-labels state-acc complete
-properties: deterministic terminal
+properties: deterministic terminal very-weak
 --BODY--
 State: 0
 [t] 0

tests/core/wdba2.test

@@ -68,6 +68,7 @@ AP: 1 "p1"
 acc-name: Buchi
 Acceptance: 1 Inf(0)
 properties: implicit-labels state-acc complete deterministic terminal
+properties: very-weak
 --BODY--
 State: 0 {0}
 0 0
@@ -108,7 +109,7 @@ AP: 0
 acc-name: Buchi
 Acceptance: 1 Inf(0)
 properties: trans-labels explicit-labels state-acc colored complete
-properties: deterministic terminal
+properties: deterministic terminal very-weak
 --BODY--
 State: 0 {0}
 [t] 0

tests/ltsmin/kripke.test

@@ -1,7 +1,7 @@
- #! /bin/sh
+#! /bin/sh
 # -*- coding: utf-8 -*-
-# Copyright (C) 2011, 2014, 2015, 2016 Laboratoire de Recherche et Developpement
+# Copyright (C) 2011, 2014-2016, 2023 Laboratoire de Recherche et
-# de l'Epita (LRDE)
+# Developpement de l'Epita (LRDE)
 #
 # This file is part of Spot, a model checking library.
 #

tests/python/automata-io.ipynb

@@ -41,7 +41,7 @@
       "acc-name: Buchi\n",
       "Acceptance: 1 Inf(0)\n",
       "properties: trans-labels explicit-labels state-acc deterministic\n",
-      "properties: stutter-invariant terminal\n",
+      "properties: stutter-invariant terminal very-weak\n",
       "--BODY--\n",
       "State: 0 {0}\n",
       "[t] 0\n",
@@ -202,7 +202,7 @@
       "acc-name: Buchi\r\n",
       "Acceptance: 1 Inf(0)\r\n",
       "properties: trans-labels explicit-labels state-acc deterministic\r\n",
-      "properties: stutter-invariant terminal\r\n",
+      "properties: stutter-invariant terminal very-weak\r\n",
       "--BODY--\r\n",
       "State: 0 {0}\r\n",
       "[t] 0\r\n",

tests/python/automata.ipynb

@@ -33,11 +33,11 @@
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        " -->\n",
        "<!-- Pages: 1 -->\n",
-       "<svg width=\"460pt\" height=\"329pt\"\n",
+       "<svg width=\"460pt\" height=\"312pt\"\n",
-       " viewBox=\"0.00 0.00 460.00 328.80\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
+       " viewBox=\"0.00 0.00 460.00 312.00\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
-       "<g id=\"graph0\" class=\"graph\" transform=\"scale(1.0 1.0) rotate(0) translate(4 324.8)\">\n",
+       "<g id=\"graph0\" class=\"graph\" transform=\"scale(1.0 1.0) rotate(0) translate(4 308)\">\n",
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-       "<text text-anchor=\"start\" x=\"204.5\" y=\"-290.6\" font-family=\"Lato\" font-size=\"14.00\">[Büchi]</text>\n",
+       "<text text-anchor=\"start\" x=\"204.5\" y=\"-288.8\" font-family=\"Lato\" font-size=\"14.00\">[Büchi]</text>\n",
        "<!-- I -->\n",
        "<!-- 0 -->\n",
        "<g id=\"node2\" class=\"node\">\n",
@@ -178,7 +178,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a002151e0> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f773078f870> >"
       ]
      },
      "execution_count": 2,
@@ -211,10 +211,10 @@
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        " -->\n",
        "<!-- Pages: 1 -->\n",
-       "<svg width=\"343pt\" height=\"360pt\"\n",
+       "<svg width=\"358pt\" height=\"360pt\"\n",
-       " viewBox=\"0.00 0.00 343.40 360.00\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
+       " viewBox=\"0.00 0.00 358.10 360.00\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
-       "<g id=\"graph0\" class=\"graph\" transform=\"scale(0.9259259259259258 0.9259259259259258) rotate(0) translate(4 386)\">\n",
+       "<g id=\"graph0\" class=\"graph\" transform=\"scale(0.9615384615384615 0.9615384615384615) rotate(0) translate(4 370)\">\n",
-       "<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-386 368.02,-386 368.02,4 -4,4\"/>\n",
+       "<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-370 368.02,-370 368.02,4 -4,4\"/>\n",
        "<text text-anchor=\"middle\" x=\"182.01\" y=\"-350.8\" font-family=\"Times,serif\" font-size=\"14.00\">[Büchi]</text>\n",
        "<!-- I -->\n",
        "<!-- 0 -->\n",
@@ -607,11 +607,11 @@
        "<!-- Generated by graphviz version 2.43.0 (0)\n",
        " -->\n",
        "<!-- Pages: 1 -->\n",
-       "<svg width=\"170pt\" height=\"125pt\"\n",
+       "<svg width=\"170pt\" height=\"108pt\"\n",
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+       " viewBox=\"0.00 0.00 170.00 108.00\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
-       "<g id=\"graph0\" class=\"graph\" transform=\"scale(1.0 1.0) rotate(0) translate(4 120.8)\">\n",
+       "<g id=\"graph0\" class=\"graph\" transform=\"scale(1.0 1.0) rotate(0) translate(4 104)\">\n",
-       "<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-120.8 166,-120.8 166,4 -4,4\"/>\n",
+       "<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-104 166,-104 166,4 -4,4\"/>\n",
-       "<text text-anchor=\"start\" x=\"59.5\" y=\"-86.6\" font-family=\"Lato\" font-size=\"14.00\">[Büchi]</text>\n",
+       "<text text-anchor=\"start\" x=\"59.5\" y=\"-84.8\" font-family=\"Lato\" font-size=\"14.00\">[Büchi]</text>\n",
        "<!-- I -->\n",
        "<!-- 1 -->\n",
        "<g id=\"node2\" class=\"node\">\n",
@@ -657,7 +657,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a000cc3c0> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f77307ac6c0> >"
       ]
      },
      "execution_count": 6,
@@ -683,11 +683,11 @@
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        " -->\n",
        "<!-- Pages: 1 -->\n",
-       "<svg width=\"170pt\" height=\"125pt\"\n",
+       "<svg width=\"170pt\" height=\"108pt\"\n",
-       " viewBox=\"0.00 0.00 170.00 124.80\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
+       " viewBox=\"0.00 0.00 170.00 108.00\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
-       "<g id=\"graph0\" class=\"graph\" transform=\"scale(1.0 1.0) rotate(0) translate(4 120.8)\">\n",
+       "<g id=\"graph0\" class=\"graph\" transform=\"scale(1.0 1.0) rotate(0) translate(4 104)\">\n",
-       "<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-120.8 166,-120.8 166,4 -4,4\"/>\n",
+       "<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-104 166,-104 166,4 -4,4\"/>\n",
-       "<text text-anchor=\"start\" x=\"59.5\" y=\"-86.6\" font-family=\"Lato\" font-size=\"14.00\">[Büchi]</text>\n",
+       "<text text-anchor=\"start\" x=\"59.5\" y=\"-84.8\" font-family=\"Lato\" font-size=\"14.00\">[Büchi]</text>\n",
        "<!-- I -->\n",
        "<!-- 1 -->\n",
        "<g id=\"node2\" class=\"node\">\n",
@@ -733,7 +733,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a000cc690> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f77307ac840> >"
       ]
      },
      "execution_count": 7,
@@ -816,7 +816,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a000cc2a0> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f77307ac930> >"
       ]
      },
      "execution_count": 8,
@@ -872,11 +872,11 @@
        "<!-- Generated by graphviz version 2.43.0 (0)\n",
        " -->\n",
        "<!-- Pages: 1 -->\n",
-       "<svg width=\"252pt\" height=\"217pt\"\n",
+       "<svg width=\"252pt\" height=\"200pt\"\n",
-       " viewBox=\"0.00 0.00 252.00 216.80\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
+       " viewBox=\"0.00 0.00 252.00 200.00\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
-       "<g id=\"graph0\" class=\"graph\" transform=\"scale(1.0 1.0) rotate(0) translate(4 212.8)\">\n",
+       "<g id=\"graph0\" class=\"graph\" transform=\"scale(1.0 1.0) rotate(0) translate(4 196)\">\n",
-       "<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-212.8 248,-212.8 248,4 -4,4\"/>\n",
+       "<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-196 248,-196 248,4 -4,4\"/>\n",
-       "<text text-anchor=\"start\" x=\"100.5\" y=\"-178.6\" font-family=\"Lato\" font-size=\"14.00\">[Büchi]</text>\n",
+       "<text text-anchor=\"start\" x=\"100.5\" y=\"-176.8\" font-family=\"Lato\" font-size=\"14.00\">[Büchi]</text>\n",
        "<!-- I -->\n",
        "<!-- 0 -->\n",
        "<g id=\"node2\" class=\"node\">\n",
@@ -983,11 +983,11 @@
        "<!-- Generated by graphviz version 2.43.0 (0)\n",
        " -->\n",
        "<!-- Pages: 1 -->\n",
-       "<svg width=\"586pt\" height=\"320pt\"\n",
+       "<svg width=\"586pt\" height=\"303pt\"\n",
-       " viewBox=\"0.00 0.00 585.88 319.80\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
+       " viewBox=\"0.00 0.00 585.88 303.00\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
-       "<g id=\"graph0\" class=\"graph\" transform=\"scale(1.0 1.0) rotate(0) translate(4 315.8)\">\n",
+       "<g id=\"graph0\" class=\"graph\" transform=\"scale(1.0 1.0) rotate(0) translate(4 299)\">\n",
-       "<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-315.8 581.88,-315.8 581.88,4 -4,4\"/>\n",
+       "<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-299 581.88,-299 581.88,4 -4,4\"/>\n",
-       "<text text-anchor=\"start\" x=\"267.44\" y=\"-281.6\" font-family=\"Lato\" font-size=\"14.00\">[Büchi]</text>\n",
+       "<text text-anchor=\"start\" x=\"267.44\" y=\"-279.8\" font-family=\"Lato\" font-size=\"14.00\">[Büchi]</text>\n",
        "<!-- I -->\n",
        "<!-- 6 -->\n",
        "<g id=\"node2\" class=\"node\">\n",
@@ -1349,7 +1349,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a000d42a0> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f77307ad320> >"
       ]
      },
      "execution_count": 12,
@@ -1463,7 +1463,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a000d4630> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f77307ad500> >"
       ]
      },
      "execution_count": 13,
@@ -1496,11 +1496,11 @@
        "<!-- Generated by graphviz version 2.43.0 (0)\n",
        " -->\n",
        "<!-- Pages: 1 -->\n",
-       "<svg width=\"257pt\" height=\"220pt\"\n",
+       "<svg width=\"257pt\" height=\"203pt\"\n",
-       " viewBox=\"0.00 0.00 257.00 219.80\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
+       " viewBox=\"0.00 0.00 257.00 203.00\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
-       "<g id=\"graph0\" class=\"graph\" transform=\"scale(1.0 1.0) rotate(0) translate(4 215.8)\">\n",
+       "<g id=\"graph0\" class=\"graph\" transform=\"scale(1.0 1.0) rotate(0) translate(4 199)\">\n",
-       "<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-215.8 253,-215.8 253,4 -4,4\"/>\n",
+       "<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-199 253,-199 253,4 -4,4\"/>\n",
-       "<text text-anchor=\"start\" x=\"103\" y=\"-181.6\" font-family=\"Lato\" font-size=\"14.00\">[Büchi]</text>\n",
+       "<text text-anchor=\"start\" x=\"103\" y=\"-179.8\" font-family=\"Lato\" font-size=\"14.00\">[Büchi]</text>\n",
        "<!-- I -->\n",
        "<!-- 0 -->\n",
        "<g id=\"node2\" class=\"node\">\n",
@@ -1594,7 +1594,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a000d4c00> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f77307add70> >"
       ]
      },
      "execution_count": 14,
@@ -1816,7 +1816,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a000d8510> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f77307ae280> >"
       ]
      },
      "metadata": {},
@@ -1974,7 +1974,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a000d8420> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f77307ae250> >"
       ]
      },
      "metadata": {},
@@ -2132,7 +2132,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a000d8300> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f77307adda0> >"
       ]
      },
      "metadata": {},
@@ -2147,11 +2147,11 @@
        "<!-- Generated by graphviz version 2.43.0 (0)\n",
        " -->\n",
        "<!-- Pages: 1 -->\n",
-       "<svg width=\"390pt\" height=\"245pt\"\n",
+       "<svg width=\"390pt\" height=\"228pt\"\n",
-       " viewBox=\"0.00 0.00 390.00 244.80\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
+       " viewBox=\"0.00 0.00 390.00 228.00\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
-       "<g id=\"graph0\" class=\"graph\" transform=\"scale(1.0 1.0) rotate(0) translate(4 240.8)\">\n",
+       "<g id=\"graph0\" class=\"graph\" transform=\"scale(1.0 1.0) rotate(0) translate(4 224)\">\n",
-       "<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-240.8 386,-240.8 386,4 -4,4\"/>\n",
+       "<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-224 386,-224 386,4 -4,4\"/>\n",
-       "<text text-anchor=\"start\" x=\"169.5\" y=\"-206.6\" font-family=\"Lato\" font-size=\"14.00\">[Büchi]</text>\n",
+       "<text text-anchor=\"start\" x=\"169.5\" y=\"-204.8\" font-family=\"Lato\" font-size=\"14.00\">[Büchi]</text>\n",
        "<!-- I -->\n",
        "<!-- 0 -->\n",
        "<g id=\"node2\" class=\"node\">\n",
@@ -2280,7 +2280,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a000d8270> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f77307adbc0> >"
       ]
      },
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@@ -2469,7 +2469,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a00215fc0> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f77307adad0> >"
       ]
      },
      "execution_count": 19,
@@ -2495,11 +2495,11 @@
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        " -->\n",
        "<!-- Pages: 1 -->\n",
-       "<svg width=\"173pt\" height=\"125pt\"\n",
+       "<svg width=\"173pt\" height=\"108pt\"\n",
-       " viewBox=\"0.00 0.00 173.00 124.80\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
+       " viewBox=\"0.00 0.00 173.00 108.00\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
-       "<g id=\"graph0\" class=\"graph\" transform=\"scale(1.0 1.0) rotate(0) translate(4 120.8)\">\n",
+       "<g id=\"graph0\" class=\"graph\" transform=\"scale(1.0 1.0) rotate(0) translate(4 104)\">\n",
-       "<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-120.8 169,-120.8 169,4 -4,4\"/>\n",
+       "<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-104 169,-104 169,4 -4,4\"/>\n",
-       "<text text-anchor=\"start\" x=\"61\" y=\"-86.6\" font-family=\"Lato\" font-size=\"14.00\">[Büchi]</text>\n",
+       "<text text-anchor=\"start\" x=\"61\" y=\"-84.8\" font-family=\"Lato\" font-size=\"14.00\">[Büchi]</text>\n",
        "<!-- I -->\n",
        "<!-- 0 -->\n",
        "<g id=\"node2\" class=\"node\">\n",
@@ -2545,7 +2545,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a000e1420> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f77307ad440> >"
       ]
      },
      "execution_count": 20,
@@ -2582,13 +2582,6 @@
    "execution_count": 22,
    "metadata": {},
    "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "no\n"
-     ]
-    },
     {
      "data": {
       "text/html": [
@@ -3016,7 +3009,6 @@
     "# Using +1 in the display options is a convenient way to shift the \n",
     "# set numbers in the output, as an aid in reading the product.\n",
     "a1 = spot.translate('GF(a <-> Xa)')\n",
-    "print(a1.prop_weak())\n",
     "a2 = spot.translate('a U b & GFc')\n",
     "display_inline(a1.show('.t'), a2.show('.t+1'))\n",
     "# the product should display pairs of states, unless asked not to (using '1').\n",
@@ -3045,11 +3037,11 @@
        "<!-- Generated by graphviz version 2.43.0 (0)\n",
        " -->\n",
        "<!-- Pages: 1 -->\n",
-       "<svg width=\"169pt\" height=\"125pt\"\n",
+       "<svg width=\"169pt\" height=\"108pt\"\n",
-       " viewBox=\"0.00 0.00 169.00 124.80\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
+       " viewBox=\"0.00 0.00 169.00 108.00\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
-       "<g id=\"graph0\" class=\"graph\" transform=\"scale(1.0 1.0) rotate(0) translate(4 120.8)\">\n",
+       "<g id=\"graph0\" class=\"graph\" transform=\"scale(1.0 1.0) rotate(0) translate(4 104)\">\n",
-       "<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-120.8 165,-120.8 165,4 -4,4\"/>\n",
+       "<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-104 165,-104 165,4 -4,4\"/>\n",
-       "<text text-anchor=\"start\" x=\"59\" y=\"-86.6\" font-family=\"Lato\" font-size=\"14.00\">[Büchi]</text>\n",
+       "<text text-anchor=\"start\" x=\"59\" y=\"-84.8\" font-family=\"Lato\" font-size=\"14.00\">[Büchi]</text>\n",
        "<!-- I -->\n",
        "<!-- 0 -->\n",
        "<g id=\"node2\" class=\"node\">\n",
@@ -3095,7 +3087,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a000ccd50> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f77307af1e0> >"
       ]
      },
      "metadata": {},
@@ -3195,7 +3187,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a000ccde0> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f77307afa20> >"
       ]
      },
      "execution_count": 24,
@@ -3268,7 +3260,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a000cce70> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f77307ac750> >"
       ]
      },
      "execution_count": 25,
@@ -3439,7 +3431,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a00215ab0> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f77307aef40> >"
       ]
      },
      "execution_count": 27,
@@ -3472,11 +3464,11 @@
        "<!-- Generated by graphviz version 2.43.0 (0)\n",
        " -->\n",
        "<!-- Pages: 1 -->\n",
-       "<svg width=\"169pt\" height=\"125pt\"\n",
+       "<svg width=\"169pt\" height=\"108pt\"\n",
-       " viewBox=\"0.00 0.00 169.00 124.80\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
+       " viewBox=\"0.00 0.00 169.00 108.00\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
-       "<g id=\"graph0\" class=\"graph\" transform=\"scale(1.0 1.0) rotate(0) translate(4 120.8)\">\n",
+       "<g id=\"graph0\" class=\"graph\" transform=\"scale(1.0 1.0) rotate(0) translate(4 104)\">\n",
-       "<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-120.8 165,-120.8 165,4 -4,4\"/>\n",
+       "<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-104 165,-104 165,4 -4,4\"/>\n",
-       "<text text-anchor=\"start\" x=\"59\" y=\"-86.6\" font-family=\"Lato\" font-size=\"14.00\">[Büchi]</text>\n",
+       "<text text-anchor=\"start\" x=\"59\" y=\"-84.8\" font-family=\"Lato\" font-size=\"14.00\">[Büchi]</text>\n",
        "<!-- I -->\n",
        "<!-- 0 -->\n",
        "<g id=\"node2\" class=\"node\">\n",
@@ -3522,7 +3514,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a000ccd50> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f77307af1e0> >"
       ]
      },
      "metadata": {},
@@ -3537,11 +3529,11 @@
        "<!-- Generated by graphviz version 2.43.0 (0)\n",
        " -->\n",
        "<!-- Pages: 1 -->\n",
-       "<svg width=\"194pt\" height=\"125pt\"\n",
+       "<svg width=\"194pt\" height=\"108pt\"\n",
-       " viewBox=\"0.00 0.00 194.00 124.80\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
+       " viewBox=\"0.00 0.00 194.00 108.00\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
-       "<g id=\"graph0\" class=\"graph\" transform=\"scale(1.0 1.0) rotate(0) translate(4 120.8)\">\n",
+       "<g id=\"graph0\" class=\"graph\" transform=\"scale(1.0 1.0) rotate(0) translate(4 104)\">\n",
-       "<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-120.8 190,-120.8 190,4 -4,4\"/>\n",
+       "<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-104 190,-104 190,4 -4,4\"/>\n",
-       "<text text-anchor=\"start\" x=\"71.5\" y=\"-86.6\" font-family=\"Lato\" font-size=\"14.00\">[Büchi]</text>\n",
+       "<text text-anchor=\"start\" x=\"71.5\" y=\"-84.8\" font-family=\"Lato\" font-size=\"14.00\">[Büchi]</text>\n",
        "<!-- I -->\n",
        "<!-- 0 -->\n",
        "<g id=\"node2\" class=\"node\">\n",
@@ -3587,7 +3579,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a000ccd50> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f77307af1e0> >"
       ]
      },
      "metadata": {},
@@ -3624,11 +3616,11 @@
        "<!-- Generated by graphviz version 2.43.0 (0)\n",
        " -->\n",
        "<!-- Pages: 1 -->\n",
-       "<svg width=\"218pt\" height=\"125pt\"\n",
+       "<svg width=\"218pt\" height=\"108pt\"\n",
-       " viewBox=\"0.00 0.00 218.00 124.80\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
+       " viewBox=\"0.00 0.00 218.00 108.00\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
-       "<g id=\"graph0\" class=\"graph\" transform=\"scale(1.0 1.0) rotate(0) translate(4 120.8)\">\n",
+       "<g id=\"graph0\" class=\"graph\" transform=\"scale(1.0 1.0) rotate(0) translate(4 104)\">\n",
-       "<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-120.8 214,-120.8 214,4 -4,4\"/>\n",
+       "<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-104 214,-104 214,4 -4,4\"/>\n",
-       "<text text-anchor=\"start\" x=\"83.5\" y=\"-86.6\" font-family=\"Lato\" font-size=\"14.00\">[Büchi]</text>\n",
+       "<text text-anchor=\"start\" x=\"83.5\" y=\"-84.8\" font-family=\"Lato\" font-size=\"14.00\">[Büchi]</text>\n",
        "<!-- I -->\n",
        "<!-- 0 -->\n",
        "<g id=\"node2\" class=\"node\">\n",
@@ -3674,7 +3666,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a000ccd50> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f77307af1e0> >"
       ]
      },
      "execution_count": 29,
@@ -3689,11 +3681,18 @@
     "        e.cond &= c\n",
     "a"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": []
   }
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   },
@@ -3707,7 +3706,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.2"
+   "version": "3.11.6"
   }
  },
  "nbformat": 4,

tests/python/dbranch.py

@@ -65,7 +65,7 @@ Start: 0
 AP: 3 "b" "a" "c"
 acc-name: all
 Acceptance: 0 t
-properties: trans-labels explicit-labels state-acc univ-branch
+properties: trans-labels explicit-labels state-acc univ-branch weak
 --BODY--
 State: 0
 [1] 1

tests/python/highlighting.ipynb

@@ -506,7 +506,7 @@
       "acc-name: Buchi\n",
       "Acceptance: 1 Inf(0)\n",
       "properties: trans-labels explicit-labels state-acc deterministic\n",
-      "properties: stutter-invariant terminal\n",
+      "properties: stutter-invariant terminal very-weak\n",
       "--BODY--\n",
       "State: 0 {0}\n",
       "[t] 0\n",
@@ -526,7 +526,7 @@
       "acc-name: Buchi\n",
       "Acceptance: 1 Inf(0)\n",
       "properties: trans-labels explicit-labels state-acc !complete\n",
-      "properties: deterministic stutter-invariant terminal\n",
+      "properties: deterministic stutter-invariant terminal very-weak\n",
       "spot.highlight.states: 0 0 1 5 2 5\n",
       "spot.highlight.edges: 2 1 4 1 5 1 6 2\n",
       "--BODY--\n",

tests/python/kripke.py

@@ -1,6 +1,6 @@
 # -*- mode: python; coding: utf-8 -*-
-# Copyright (C) 2019, 2022 Laboratoire de Recherche et Développement
+# Copyright (C) 2019, 2022, 2023 Laboratoire de Recherche et
-# de l'Epita (LRDE).
+# Développement de l'Epita (LRDE).
 #
 # This file is part of Spot, a model checking library.
 #
@@ -45,7 +45,7 @@ Start: 1
 AP: 2 "p1" "p2"
 acc-name: all
 Acceptance: 0 t
-properties: state-labels explicit-labels state-acc
+properties: state-labels explicit-labels state-acc weak
 --BODY--
 State: [0&1] 0
 0
@@ -65,7 +65,7 @@ Start: 1
 AP: 2 "p1" "p2"
 acc-name: all
 Acceptance: 0 t
-properties: state-labels explicit-labels state-acc
+properties: state-labels explicit-labels state-acc weak
 --BODY--
 State: [0&1] 0 "s0"
 0
@@ -83,7 +83,7 @@ Start: 1
 AP: 2 "p1" "p2"
 acc-name: all
 Acceptance: 0 t
-properties: state-labels explicit-labels state-acc
+properties: state-labels explicit-labels state-acc weak
 --BODY--
 State: [0&1] 0 "s0"
 0

tests/python/ltsmin-dve.ipynb

@@ -1773,7 +1773,7 @@
       "AP: 3 \"a<1\" \"b>2\" \"dead\"\n",
       "acc-name: all\n",
       "Acceptance: 0 t\n",
-      "properties: state-labels explicit-labels state-acc\n",
+      "properties: state-labels explicit-labels state-acc weak\n",
       "--BODY--\n",
       "State: [0&!1&!2] 0 \"a=0, b=0, Q=0\"\n",
       "1 2\n",

tests/python/mealy.py

@@ -1,6 +1,6 @@
 #!/usr/bin/python3
 # -*- mode: python; coding: utf-8 -*-
-# Copyright (C) 2021, 2022 Laboratoire de Recherche et Développement de
+# Copyright (C) 2021-2023 Laboratoire de Recherche et Développement de
 # l'EPITA.
 #
 # This file is part of Spot, a model checking library.
@@ -557,7 +557,7 @@ Start: 0
 AP: 2 "a" "b"
 acc-name: all
 Acceptance: 0 t
-properties: trans-labels explicit-labels state-acc deterministic
+properties: trans-labels explicit-labels state-acc deterministic weak
 controllable-AP: 1
 --BODY--
 State: 0
@@ -598,7 +598,7 @@ Start: 0
 AP: 2 "a" "b"
 acc-name: all
 Acceptance: 0 t
-properties: trans-labels explicit-labels state-acc deterministic
+properties: trans-labels explicit-labels state-acc deterministic weak
 controllable-AP: 1
 --BODY--
 State: 0

tests/python/simstate.py

@@ -1,5 +1,5 @@
 # -*- mode: python; coding: utf-8 -*-
-# Copyright (C) 2015, 2017-2018, 2020-2022  Laboratoire de Recherche
+# Copyright (C) 2015, 2017-2018, 2020-2023  Laboratoire de Recherche
 # et Développement de l'Epita
 #
 # This file is part of Spot, a model checking library.
@@ -539,10 +539,10 @@ States: 1
 Start: 0
 AP: 1 "a"
 Acceptance: 1 t
-properties: trans-labels explicit-labels state-acc colored
+properties: trans-labels explicit-labels state-acc deterministic
-properties: deterministic
+properties: very-weak
 --BODY--
-State: 0 {0}
+State: 0
 [0] 0
 --END--''')