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more on saturation

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2021-09-08 14:00:36 +02:00
parent 58276e2569
commit c7129d2537
2 changed files with 92 additions and 54 deletions
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12
src/math/polysat/saturation.h
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@ -41,8 +41,10 @@ namespace polysat {
};
class inf_saturate : public inference_engine {
bool push_omega_mul(conflict_core& core, unsigned level, pdd const& x, pdd const& y);
void push_l(conflict_core& core, unsigned level, bool strict, pdd const& lhs, pdd const& rhs);
bool push_omega_mul(conflict_core& core, clause_builder& reason, unsigned level, pdd const& x, pdd const& y);
signed_constraint ineq(unsigned level, bool strict, pdd const& lhs, pdd const& rhs);
void push_c(conflict_core& core, signed_constraint const& c, clause_builder& reason);
void push_l(conflict_core& core, unsigned level, bool strict, pdd const& lhs, pdd const& rhs, clause_builder& reason);
bool try_ugt_x(pvar v, conflict_core& core, inequality const& c);
@ -74,6 +76,12 @@ namespace polysat {
bool is_YX_l_zX(pvar z, inequality const& c, pdd& x, pdd& y);
bool verify_YX_l_zX(pvar z, inequality const& c, pdd const& x, pdd const& y);
// c := xY <= xZ
bool is_xY_l_xZ(pvar x, inequality const& c, pdd& y, pdd& z);
// xy := x * Y
bool is_xY(pvar x, pdd const& xy, pdd& y);
public:
bool perform(pvar v, conflict_core& core) override;