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Clear the contaiment cache after -r7.

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Doing so will release all BDD variables used by automata created for
syntactic implication.  This way the main translation will create
acceptance variables again in a more natural order, which will help
the degeneralization (until we get a better degeneralization).

* src/ltlvisit/contain.cc, src/ltlvisit/contain.hh
(language_containment_checker::clear): New method to clear the
containment cache.
* src/ltlvisit/simplify.cc, src/ltlvisit/simplify.hh
(clear_as_bdd_cache): Also call language_containment_checker::clear.
This commit is contained in:
Alexandre Duret-Lutz 2012-05-21 22:35:51 +02:00
parent 1c1c95f65f
commit 72f36c50a5
4 changed files with 12 additions and 0 deletions
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src/ltlvisit/simplify.hh
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@ -138,6 +138,8 @@ namespace spot
/// order. For instance ltl_to_tgba_fm() will usually be more
/// efficient if the BDD variables for atomic propositions have
/// not been ordered before hand.
///
/// This also clears the language containment cache.
void clear_as_bdd_cache();
/// Return the bdd_dict used.