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stength: fix detection of terminal automata

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Fixes issue #553.

* spot/twaalgos/strength.cc (is_type_automaton): Make sure an
accepting SCC is not followed by a rejecting one.
(is_terminal_automaton): Mark the third-argument version deprecated.
* spot/twaalgos/strength.hh: Adjust.
* spot/twaalgos/couvreurnew.cc: Remove the inappropriate terminal
optimization.
* bin/ltlfilt.cc, spot/tl/hierarchy.cc, spot/twaalgos/gfguarantee.cc,
tests/core/ikwiad.cc: Remove usage of the third argument of
is_terminal_automaton.
* tests/core/readsave.test, tests/core/strength.test: Adjust test
cases.
* NEWS: Mention the bug.
This commit is contained in:
Alexandre Duret-Lutz 2023-11-21 16:40:33 +01:00
parent 63362d535f
commit 62fb0c354e
10 changed files with 75 additions and 82 deletions
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2
bin/ltlfilt.cc
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@ -843,7 +843,7 @@ namespace
{
spot::scc_info si(min);
matched &= !guarantee
|| is_terminal_automaton(min, &si, true);
|| is_terminal_automaton(min, &si);
matched &= !safety || is_safety_automaton(min, &si);
}
}