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Polysat: constraint refactor cont'd, deduplicate constraints (#5520)

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* Assign boolean variables only to long-lived constraints, and deduplicate constraints when they are created

* scoped_signed_constraint

* update other classes

* fix

* Don't use scoped_ptr<constraint> with dedup()
This commit is contained in:
Jakob Rath 2021-08-30 19:00:27 +02:00 • committed by GitHub
parent ebaea2159e
commit 0c1e44da77
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16 changed files with 365 additions and 298 deletions
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src/math/polysat/ule_constraint.cpp
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@ -113,7 +113,7 @@ namespace polysat {
return p.is_val() && q.is_val() && p.val() > q.val();
}
bool ule_constraint::forbidden_interval(solver& s, bool is_positive, pvar v, eval_interval& out_interval, constraint_literal_ref& out_neg_cond)
bool ule_constraint::forbidden_interval(solver& s, bool is_positive, pvar v, eval_interval& out_interval, scoped_signed_constraint& out_neg_cond)
{
// Current only works when degree(v) is at most one on both sides
unsigned const deg1 = lhs().degree(v);