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fixes to saturation

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2021-09-10 05:34:52 +02:00
parent 98331c261d
commit 18e5a3a991
2 changed files with 71 additions and 87 deletions
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7
src/math/polysat/saturation.h
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@ -41,8 +41,8 @@ namespace polysat {
void push_omega(clause_builder& reason, unsigned level, pdd const& x, pdd const& y);
void push_omega_bisect(clause_builder& reason, unsigned level, pdd const& x, rational x_max, pdd const& y, rational y_max);
signed_constraint ineq(unsigned level, bool strict, pdd const& lhs, pdd const& rhs);
bool push_c(conflict_core& core, signed_constraint const& c, clause_builder& reason);
bool push_l(conflict_core& core, unsigned level, bool strict, pdd const& lhs, pdd const& rhs, clause_builder& reason);
bool propagate(conflict_core& core, signed_constraint& c, clause_builder& reason);
bool propagate(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);
@ -86,6 +86,9 @@ namespace polysat {
// a * b does not overflow
bool is_non_overflow(pdd const& a, pdd const& b);
// p := coeff*x*y where coeff_x = coeff*x, x a variable
bool is_coeffxY(pdd const& coeff_x, pdd const& p, pdd& y);
public:
bool perform(pvar v, conflict_core& core) override;