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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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6
src/math/polysat/explain.h
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@ -12,6 +12,7 @@ Author:
--*/
#pragma once
#include "math/polysat/conflict_core.h"
#include "math/polysat/constraint.h"
#include "math/polysat/clause_builder.h"
#include "math/polysat/interval.h"
@ -43,13 +44,14 @@ namespace polysat {
conflict_explainer(solver& s);
/** resolve conflict state against assignment to v */
clause_ref resolve(pvar v, ptr_vector<constraint> const& cjust_v);
void resolve(pvar v, ptr_vector<constraint> const& cjust_v);
void resolve(sat::literal lit);
// TODO: move conflict resolution from solver into this class.
// we have a single public method as entry point to conflict resolution.
// what do we need to return?
/** conflict resolution */
/** conflict resolution until first (relevant) decision */
void resolve();
};
}