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simplify: fix handling of keep_top_xor

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Under that option, !(a ^ b) was converted
to (!a <=> !b) instead of simply (a <=> b).

* spot/tl/simplify.cc (equiv_or_xor): Improve
rewriting.
* tests/core/ltl2tgba2.test, tests/python/simstate.py: Adjust test
cases.
This commit is contained in:
Alexandre Duret-Lutz 2020-07-22 16:23:34 +02:00
parent 2ce84f7889
commit 2c267cac40
4 changed files with 19 additions and 16 deletions
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9
NEWS
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@ -1,19 +1,22 @@
New in spot 2.9.3.dev (not yet released)
Nothing yet.
Bugs fixed:
- Handle xor and <-> in a more natural way when translating
LTL formulas to generic acceptancee conditions.
New in spot 2.9.3 (2020-07-22)
Bug fixed:
- Completely fix the ltlcross issue mentionned in previous release.
- Completely fix the ltlcross issue mentioned in previous release.
New in spot 2.9.2 (2020-07-21)
Bugs fixed:
- ltlcross --csv=... --product=N with N>0 could output spurious
diagnosics claiming that words were rejected when evaluating
diagnostics claiming that words were rejected when evaluating
the automaton on state-space.
- spot::scc_info::determine_unknown_acceptance() now also update the