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Strip useless acceptance conditions in scc_filter().

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A useless acceptance conditions is one that is always implied by
another.

* src/misc/bddop.hh, src/misc/bddop.cc
(compute_neg_acceptance_conditions): New function.
* src/tgba/tgbaexplicit.hh, src/tgba/tgbaexplicit.cc
(set_acceptance_conditions): New function.
* src/tgbaalgos/scc.cc (build_map, build_scc_stats, dump_scc_dot):
Keep track of useful acceptance conditions.
(useful_acc_of): New function.
* src/tgbaalgos/scc.hh (scc_stats, scc_map::scc::useful_scc): New
attributes.
* src/tgbaalgos/sccfilter.cc (filter_iter): Adjust to filter
useless acceptance conditions.
(scc_filter): Compute useful acceptance conditions and pass them
to filter_iter.
This commit is contained in:
Alexandre Duret-Lutz 2009-11-20 19:21:12 +01:00
parent 5d427f6d15
commit dfb9c6622b
8 changed files with 130 additions and 11 deletions
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11
src/tgba/tgbaexplicit.cc
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@ -159,6 +159,17 @@ namespace spot
neg_acceptance_conditions_ = f;
}
void
tgba_explicit::set_acceptance_conditions(bdd acc)
{
assert(neg_acceptance_conditions_ == bddtrue);
assert(all_acceptance_conditions_computed_ == false);
dict_->register_acceptance_variables(bdd_support(acc), this);
neg_acceptance_conditions_ = compute_neg_acceptance_conditions(acc);
all_acceptance_conditions_computed_ = true;
all_acceptance_conditions_ = acc;
}
bool
tgba_explicit::has_acceptance_condition(const ltl::formula* f) const
{