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Separate constraint creation from activation; add sign/polarity to constraints (#5217)

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* Separate constraint creation from activation

* Basic recursive handling of disjunctive lemmas for unit tests

* Set learned constraint to true immediately

* Preliminary support for negated constraints
This commit is contained in:
Jakob Rath 2021-04-26 18:55:58 +02:00 • committed by GitHub
parent 2fac9e6e66
commit 9e505d60f0
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GPG key ID: 4AEE18F83AFDEB23
12 changed files with 244 additions and 73 deletions
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5
src/math/polysat/var_constraint.h
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@ -29,8 +29,8 @@ namespace polysat {
pvar m_var;
bdd m_viable;
public:
var_constraint(unsigned lvl, pvar v, bdd const & b, p_dependency_ref& dep):
constraint(lvl, dep, ckind_t::bit_t), m_var(v), m_viable(b) {}
var_constraint(unsigned lvl, bool_var bvar, csign_t sign, pvar v, bdd const & b, p_dependency_ref& dep):
constraint(lvl, bvar, sign, dep, ckind_t::bit_t), m_var(v), m_viable(b) {}
~var_constraint() override {}
std::ostream& display(std::ostream& out) const override;
bool propagate(solver& s, pvar v) override;
@ -38,5 +38,6 @@ namespace polysat {
void narrow(solver& s) override;
bool is_always_false() override;
bool is_currently_false(solver& s) override;
bool is_currently_true(solver& s) override;
};
}