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optimizations to bv-solver and euf-egraph (#4698)

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* additional bit-vector propagators

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

* rename restrict (not a keyword, but well) #4694, tune euf

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

* merge

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

* add pb rewriting to pb2bv #4697

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-09-20 06:47:27 -07:00 • committed by GitHub
parent ed44a44579
commit 6f63f8761c
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GPG key ID: 4AEE18F83AFDEB23
24 changed files with 206 additions and 116 deletions
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16
src/ast/euf/euf_egraph.h
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@ -90,9 +90,10 @@ namespace euf {
struct new_th_eq_qhead {};
struct new_lits_qhead {};
struct inconsistent {};
struct value_assignment {};
enum class tag_t { is_set_parent, is_add_node, is_toggle_merge,
is_add_th_var, is_replace_th_var, is_new_lit, is_new_th_eq,
is_new_th_eq_qhead, is_new_lits_qhead, is_inconsistent };
is_new_th_eq_qhead, is_new_lits_qhead, is_inconsistent, is_value_assignment };
tag_t tag;
enode* r1;
enode* n1;
@ -124,7 +125,9 @@ namespace euf {
update_record(unsigned qh, new_lits_qhead):
tag(tag_t::is_new_lits_qhead), r1(nullptr), n1(nullptr), qhead(qh) {}
update_record(bool inc, inconsistent) :
tag(tag_t::is_inconsistent), m_inconsistent(inc) {}
tag(tag_t::is_inconsistent), r1(nullptr), n1(nullptr), m_inconsistent(inc) {}
update_record(enode* n, value_assignment) :
tag(tag_t::is_value_assignment), r1(n), n1(nullptr), qhead(0) {}
};
ast_manager& m;
enode_vector m_worklist;
@ -151,7 +154,6 @@ namespace euf {
std::function<void(expr*,expr*,expr*)> m_used_eq;
std::function<void(app*,app*)> m_used_cc;
std::function<void(std::ostream&, void*)> m_display_justification;
std::function<lbool(enode*)> m_value;
void push_eq(enode* r1, enode* n1, unsigned r2_num_parents) {
m_updates.push_back(update_record(r1, n1, r2_num_parents));
@ -160,7 +162,6 @@ namespace euf {
void add_th_eq(theory_id id, theory_var v1, theory_var v2, enode* c, enode* r);
void new_diseq(enode* n1);
void add_th_diseqs(theory_id id, theory_var v1, enode* r);
bool th_propagates_diseqs(theory_id id) const;
void add_literal(enode* n, bool is_eq);
@ -202,12 +203,12 @@ namespace euf {
void push() { ++m_num_scopes; }
void pop(unsigned num_scopes);
bool is_equality(enode* n) const;
/**
\brief merge nodes, all effects are deferred to the propagation step.
*/
void merge(enode* n1, enode* n2, void* reason) { merge(n1, n2, justification::external(reason)); }
void new_diseq(enode* n1);
/**
\brief propagate set of merges.
@ -243,11 +244,12 @@ namespace euf {
void add_th_var(enode* n, theory_var v, theory_id id);
void set_th_propagates_diseqs(theory_id id);
void set_merge_enabled(enode* n, bool enable_merge);
void set_value(enode* n, lbool value);
void set_bool_var(enode* n, unsigned v) { n->set_bool_var(v); }
void set_used_eq(std::function<void(expr*,expr*,expr*)>& used_eq) { m_used_eq = used_eq; }
void set_used_cc(std::function<void(app*,app*)>& used_cc) { m_used_cc = used_cc; }
void set_display_justification(std::function<void (std::ostream&, void*)> & d) { m_display_justification = d; }
void set_eval(std::function<lbool(enode*)>& eval) { m_value = eval; }
void begin_explain();
void end_explain();