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strength: generalize is_safety_automaton to any type of automata

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Reported by Samuel Judson.

* spot/twaalgos/strength.cc (is_safety_automaton): Reimplement it.
* spot/twaalgos/strength.hh (is_safety_automaton): Update
documentation.
* tests/python/safety.py: New file.
* tests/Makefile.am: Add it.
* NEWS: Mention this change.
* THANKS: Add Samuel.
This commit is contained in:
Alexandre Duret-Lutz 2023-12-16 00:09:24 +01:00
parent e8c2b27ad2
commit 983964d037
6 changed files with 122 additions and 16 deletions
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6
NEWS
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@ -120,6 +120,12 @@ New in spot 2.11.6.dev (not yet released)
- ltsmin's interface will now point to README.ltsmin in case an
error is found while running divine or spins.
- spot::is_safety_automaton() was generalized to detect any
automaton for which the acceptance could be changed to "t" without
changing the language. In previous versions this function assumed
weak automata as input, but the documentation did not reflect
this.
Python:
- The spot.automata() and spot.automaton() functions now accept a