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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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3
spot/twaalgos/translate.hh
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@ -132,6 +132,9 @@ namespace spot
/// by the simplified version.
twa_graph_ptr run(formula* f);
/// \brief Clear the LTL simplification caches.
void clear_caches();
protected:
void setup_opt(const option_map* opt);
void build_simplifier(const bdd_dict_ptr& dict);