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delay (lazy) process equalities.

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This commit is contained in:
Nikolaj Bjorner 2021-03-17 15:34:04 -07:00
parent ddbcd08d46
commit 156139622c
3 changed files with 49 additions and 20 deletions
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7
src/sat/smt/arith_solver.h
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@ -164,6 +164,7 @@ namespace arith {
svector<literal> m_inequalities; // asserted rows corresponding to inequality literals.
svector<euf::enode_pair> m_equalities; // asserted rows corresponding to equalities.
svector<theory_var> m_definitions; // asserted rows corresponding to definitions
svector<std::pair<euf::th_eq, bool>> m_delayed_eqs;
literal_vector m_asserted;
expr* m_not_handled{ nullptr };
@ -305,6 +306,7 @@ namespace arith {
literal is_bound_implied(lp::lconstraint_kind k, rational const& value, api_bound const& b) const;
void assert_bound(bool is_true, api_bound& b);
void mk_eq_axiom(bool is_eq, euf::th_eq const& eq);
void mk_diseq_axiom(euf::th_eq const& eq);
void assert_idiv_mod_axioms(theory_var u, theory_var v, theory_var w, rational const& r);
api_bound* mk_var_bound(sat::literal lit, theory_var v, lp_api::bound_kind bk, rational const& bound);
lp::lconstraint_kind bound2constraint_kind(bool is_int, lp_api::bound_kind bk, bool is_true);
@ -348,6 +350,7 @@ namespace arith {
bool use_nra_model();
lbool make_feasible();
bool check_delayed_eqs();
lbool check_lia();
lbool check_nla();
bool is_infeasible() const;
@ -423,8 +426,8 @@ namespace arith {
void collect_statistics(statistics& st) const override;
euf::th_solver* clone(euf::solver& ctx) override;
bool use_diseqs() const override { return true; }
void new_eq_eh(euf::th_eq const& eq) override { mk_eq_axiom(true, eq); }
void new_diseq_eh(euf::th_eq const& de) override { mk_eq_axiom(false, de); }
void new_eq_eh(euf::th_eq const& eq) override;
void new_diseq_eh(euf::th_eq const& de) override;
bool unit_propagate() override;
void init_model() override;
void finalize_model(model& mdl) override { DEBUG_CODE(dbg_finalize_model(mdl);); }