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Allow creation of op_constraint lemmas without adding them

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Jakob Rath 2022-11-30 14:57:14 +01:00
parent 5069796755
commit e338d42cff
3 changed files with 84 additions and 58 deletions
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7
src/math/polysat/constraint.h
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@ -84,6 +84,12 @@ namespace polysat {
bool is_currently_false(solver const& s, bool is_positive) const { return is_currently_true(s, !is_positive); }
virtual void narrow(solver& s, bool is_positive, bool first) = 0;
/**
* If possible, produce a lemma that contradicts the given assignment.
* This method should not modify the solver's search state.
* TODO: don't pass the solver, but an interface that only allows creation of constraints
*/
virtual clause_ref produce_lemma(solver& s, assignment const& a, bool is_positive) { return {}; }
ule_constraint& to_ule();
ule_constraint const& to_ule() const;
@ -153,6 +159,7 @@ namespace polysat {
bool is_currently_true(solver const& s) const { return get()->is_currently_true(s, is_positive()); }
lbool bvalue(solver& s) const;
void narrow(solver& s, bool first) { get()->narrow(s, is_positive(), first); }
clause_ref produce_lemma(solver& s, assignment const& a) { return get()->produce_lemma(s, a, is_positive()); }
void add_to_univariate_solver(solver& s, univariate_solver& us, unsigned dep) const { get()->add_to_univariate_solver(s, us, dep, is_positive()); }