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ltl2tgba_fm: Fix incorrect simplification of promises for M

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The bug was reported by Joachim Klein.

* src/tgbaalgos/ltl2tgba_fm.cc (translate_dict::register_a_variable):
Reduce P(a M b) to P(a & b), not to P(a).
* src/tgbatest/ltlcross.test: Test Joachim's formula.
* src/tgbatest/ltl2ta.test: Adjust some expected values.
* NEWS: Mention the bug.
This commit is contained in:
Alexandre Duret-Lutz 2014-08-20 20:52:18 +02:00
parent e7dc62e3c8
commit 795c2f1720
4 changed files with 99 additions and 44 deletions
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4
NEWS
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@ -7,6 +7,10 @@ New in spot 1.2.4a (not yet released)
* Bug fixes:
- Fix incorrect simplification of promises in the translation
of the M operator (you may suffer from the bug even if you do
not use this operator as some LTL patterns are automatically
reduced to it).
- Fix simplification of bounded repetition in SERE formulas.
- Fix parsing of neverclaims produced by Modella.
- Fix a memory leak in the little-used conversion from