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add parity constraint for disequality

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2022-12-12 19:40:19 -08:00
parent 479e0e58ea
commit a5f12e9d57
3 changed files with 46 additions and 2 deletions
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3
src/math/polysat/saturation.h
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@ -47,6 +47,7 @@ namespace polysat {
bool try_ugt_z(pvar z, conflict& core, inequality const& x_l_z0, inequality const& yz_l_xz, pdd const& y, pdd const& x);
bool try_parity(pvar x, conflict& core, inequality const& axb_l_y);
bool try_parity_diseq(pvar x, conflict& core, inequality const& axb_l_y);
bool try_mul_bounds(pvar x, conflict& core, inequality const& axb_l_y);
bool try_factor_equality(pvar x, conflict& core, inequality const& a_l_b);
bool try_mul_eq_1(pvar x, conflict& core, inequality const& axb_l_y);
@ -87,6 +88,8 @@ namespace polysat {
bool is_AxB_eq_0(pvar x, inequality const& c, pdd& a, pdd& b, pdd& y);
bool verify_AxB_eq_0(pvar x, inequality const& c, pdd const& a, pdd const& b, pdd const& y);
// c := Ax + B != Y, val(Y) = 0
bool is_AxB_diseq_0(pvar x, inequality const& c, pdd& a, pdd& b, pdd& y);
// c := Y*X ~ z*X
bool is_YX_l_zX(pvar z, inequality const& c, pdd& x, pdd& y);