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ltl2tgba: clear simplification cache between translations

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The cache used in formula simplification will keep atomic propositions
defined between several translations, and may impact variable order.
Reported by Maximilien Colange.

* spot/tl/simplify.hh, spot/tl/simplify.cc,
spot/twaalgos/translate.cc, spot/twaalgos/translate.hh (clear_cache):
New method.
* bin/ltl2tgba.cc, bin/ltl2tgta.cc: Call it.
* spot/twaalgos/stats.cc: Do not keep a point to the formula after
printing statistics.
* tests/core/ltl2tgba.test: Add a test case.
* tests/core/readsave.test: Adjust one formula.
* NEWS: Mention the issue.
This commit is contained in:
Alexandre Duret-Lutz 2017-05-10 15:59:58 +02:00
parent 8e19d3f47e
commit f07fbbae79
10 changed files with 60 additions and 14 deletions
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2
tests/core/readsave.test
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@ -122,7 +122,7 @@ cat >expected <<EOF
<F(b | Ga), 3 states>, 5, 1
<F(!b & G(!b | G!a)), 3 states>, 5, 1
<XF!b, 3 states>, 4, 1
<Gb | G!b, 3 states>, 4, 1
<G!b | Gb, 3 states>, 4, 1
<XFb, 3 states>, 4, 1
<F(b W a), 3 states>, 6, 1
<(a & !b & (b | (!b M F!a))) | (!a & (b | (!b & (b W Ga)))), 3 states>, 5, 1