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bv and gc of literals (#4692)

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* bv and gc of literals

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* overload

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* diseq

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* diseq

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-09-17 14:24:07 -07:00 • committed by GitHub
parent 2d52367368
commit 549753845e
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GPG key ID: 4AEE18F83AFDEB23
34 changed files with 1480 additions and 854 deletions
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9
src/sat/sat_solver.h
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@ -124,6 +124,7 @@ namespace sat {
bool_vector m_lit_mark;
bool_vector m_eliminated;
bool_vector m_external;
unsigned_vector m_var_scope;
unsigned_vector m_touched;
unsigned m_touch_index;
literal_vector m_replay_assign;
@ -286,6 +287,8 @@ namespace sat {
clause * mk_ter_clause(literal * lits, status st);
bool attach_ter_clause(clause & c, status st);
clause * mk_nary_clause(unsigned num_lits, literal * lits, status st);
bool has_variables_to_reinit(clause const& c) const;
bool has_variables_to_reinit(literal l1, literal l2) const;
bool attach_nary_clause(clause & c);
void attach_clause(clause & c, bool & reinit);
void attach_clause(clause & c) { bool reinit; attach_clause(c, reinit); }
@ -320,6 +323,7 @@ namespace sat {
void detach_nary_clause(clause & c);
void detach_ter_clause(clause & c);
void push_reinit_stack(clause & c);
void push_reinit_stack(literal l1, literal l2);
void init_visited();
void mark_visited(literal l) { m_visited[l.index()] = m_visited_ts; }
@ -441,6 +445,7 @@ namespace sat {
protected:
bool should_propagate() const;
bool propagate_core(bool update);
bool propagate_literal(literal l, bool update);
// -----------------------
//
@ -546,6 +551,10 @@ namespace sat {
bool can_delete(clause const & c) const;
bool can_delete3(literal l1, literal l2, literal l3) const;
// gc for lemmas in the reinit-stack
void gc_reinit_stack(unsigned num_scopes);
bool is_asserting(unsigned new_lvl, clause_wrapper const& cw) const;
clause& get_clause(watch_list::iterator it) const {
SASSERT(it->get_kind() == watched::CLAUSE);
return get_clause(it->get_clause_offset());