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Polysat disjunctive lemmas (WIP) (#5275)

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* Extend search state by boolean literals

* Only resolve against positive equality

* mk_dep_ref

* Make clause non-owning

* scoped_clause

* Use scoped_clause

* minor

* scoped_ptr move assignment

* WIP: internal handling of disjunctive constraints

* leaf_value

* disjunctive constraints continued

* Fix bool_lit

* Actually add constraints to storage

* Some fixes

* more fixes

* constraint should have a bool_lit instead of a bool_var

* propagate(bool_lit)

* updates

* interface changes

* small fixes

* Make sat::dimacs_lit's constructor explicit

(otherwise, calling operator<< with sat::literal is ambiguous)

* Use sat::literal

* Print test name at the beginning

* Convention: constraint corresponds to the positive boolean literal

* Make constraint ownership more explicit

* clause stores literals
This commit is contained in:
Jakob Rath 2021-05-21 22:50:25 +02:00 • committed by GitHub
parent 49e9782238
commit 28996429df
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GPG key ID: 4AEE18F83AFDEB23
24 changed files with 1196 additions and 360 deletions
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6
src/math/polysat/ule_constraint.h
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@ -21,8 +21,8 @@ namespace polysat {
pdd m_lhs;
pdd m_rhs;
public:
ule_constraint(unsigned lvl, bool_var bvar, csign_t sign, pdd const& l, pdd const& r, p_dependency_ref const& dep):
constraint(lvl, bvar, sign, dep, ckind_t::ule_t), m_lhs(l), m_rhs(r) {
ule_constraint(constraint_manager& m, unsigned lvl, csign_t sign, pdd const& l, pdd const& r, p_dependency_ref const& dep):
constraint(m, lvl, sign, dep, ckind_t::ule_t), m_lhs(l), m_rhs(r) {
m_vars.append(l.free_vars());
for (auto v : r.free_vars())
if (!m_vars.contains(v))
@ -32,7 +32,7 @@ namespace polysat {
pdd const& lhs() const { return m_lhs; }
pdd const& rhs() const { return m_rhs; }
std::ostream& display(std::ostream& out) const override;
constraint* resolve(solver& s, pvar v) override;
scoped_ptr<constraint> resolve(solver& s, pvar v) override;
bool is_always_false(pdd const& lhs, pdd const& rhs);
bool is_always_false() override;
bool is_currently_false(solver& s) override;