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Support watching inactive constraints

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This allows us to handle non-redundant clauses (like we get from quot_rem)
This commit is contained in:
Jakob Rath 2022-05-27 15:49:54 +02:00
parent 6bf897aad8
commit 2345fb6428
5 changed files with 119 additions and 34 deletions
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14
src/math/polysat/solver.h
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@ -108,7 +108,7 @@ namespace polysat {
// Per variable information
vector<rational> m_value; // assigned value
vector<justification> m_justification; // justification for variable assignment
vector<signed_constraints> m_pwatch; // watch list datastructure into constraints.
vector<constraints> m_pwatch; // watch list datastructure into constraints.
#ifndef NDEBUG
std::optional<pvar> m_locked_wlist; // restrict watch list modification while it is being propagated
bool m_propagating = false; // set to true during propagation
@ -128,7 +128,7 @@ namespace polysat {
svector<trail_instr_t> m_trail;
unsigned_vector m_qhead_trail;
unsigned_vector m_cjust_trail;
constraints m_pwatch_trail;
unsigned_vector m_base_levels; // External clients can push/pop scope.
@ -179,13 +179,13 @@ namespace polysat {
void propagate(sat::literal lit);
void propagate(pvar v);
bool propagate(pvar v, signed_constraint c);
bool propagate(pvar v, constraint* c);
void propagate(pvar v, rational const& val, signed_constraint c);
bool propagate(sat::literal lit, clause& cl);
void erase_watch(pvar v, signed_constraint c);
void erase_watch(signed_constraint c);
void add_watch(signed_constraint c);
void add_watch(signed_constraint c, pvar v);
void add_pwatch(constraint* c);
void add_pwatch(constraint* c, pvar v);
void erase_pwatch(pvar v, constraint* c);
void erase_pwatch(constraint* c);
void set_conflict(signed_constraint c) { m_conflict.set(c); }
void set_conflict(clause& cl) { m_conflict.set(cl); }