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update dep

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2021-09-13 17:35:36 +02:00
parent 9e6fd7cb70
commit c082ea4357
5 changed files with 26 additions and 6 deletions
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19
src/math/polysat/saturation.cpp
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@ -60,11 +60,26 @@ namespace polysat {
bool inf_saturate::propagate(conflict_core& core, inequality const& crit1, inequality const& crit2, signed_constraint& c, vector<signed_constraint>& new_constraints) {
bool crit1_false = crit1.as_signed_constraint().is_currently_false(s());
bool crit2_false = crit2.as_signed_constraint().is_currently_false(s());
if ((crit1_false || crit2_false) && c.is_currently_true(s())) // TODO: check filter
if (!crit1_false && !crit2_false)
return false;
bool is_bool_false = c.bvalue(s()) == l_false;
bool is_model_false = c.is_currently_false(s());
if (!is_bool_false && !is_model_false)
return false;
// refresh dependencies for crit1, crit2
// this is called before core.set, which
// rehashes the variable dependencies
core.keep(crit1.as_signed_constraint());
core.keep(crit2.as_signed_constraint());
if (is_bool_false)
core.insert(~c);
else
core.set(c);
// add fresh constraints
for (auto d : new_constraints)
core.insert(d);
core.insert(c);
return true;
}