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minimize: t acceptance is compatible with wdba-minimization

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* spot/twaalgos/minimize.cc (minimize_obligation_garanteed_to_work):
Skip some tests when the acceptance is "t".
* tests/core/det.test: Adjust.
This commit is contained in:
Alexandre Duret-Lutz 2024-03-22 16:08:32 +01:00
parent 7e228e86ee
commit 26a62c8b68
2 changed files with 22 additions and 8 deletions
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24
spot/twaalgos/minimize.cc
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@ -611,11 +611,25 @@ namespace spot
formula f)
{
// WDBA-minimization necessarily work for obligations
return ((f && f.is_syntactic_obligation())
// Weak deterministic automata are obligations
|| (aut_f->prop_weak().is_true() && is_deterministic(aut_f))
// Guarantee automata are obligations as well.
|| is_terminal_automaton(aut_f));
if (f && f.is_syntactic_obligation())
return true;
// we can minimize automata with t acceptance
if (aut_f->acc().is_t())
return true;
if (aut_f->prop_weak().is_false())
return false;
// Weak deterministic automata are obligations
if (aut_f->prop_weak().is_true() && is_deterministic(aut_f))
return true;
scc_info si(aut_f);
check_strength(std::const_pointer_cast<twa_graph>(aut_f), &si);
// Check again, now that the strength is known
if (aut_f->prop_weak().is_true() && is_deterministic(aut_f))
return true;
// Guarantee automata are obligations as well.
if (is_terminal_automaton(aut_f, &si))
return true;
return false;
}
twa_graph_ptr