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two bugs: check for always false, adjust start of list was incorrect during re-insert

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Nikolaj Bjorner 2022-02-02 07:37:35 -08:00
parent 1a36b74143
commit 32edbfa28e
4 changed files with 13 additions and 13 deletions
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src/math/polysat/explain.cpp
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@ -165,10 +165,9 @@ namespace polysat {
auto c2 = s.ule(a, b);
if (!c.is_positive())
c2 = ~c2;
LOG("try-reduce is false " << c2.is_currently_false(s));
if (!c2.is_currently_false(s))
continue;
if (c2.bvalue(s) == l_false)
if (c2.is_always_false() || c2.bvalue(s) == l_false)
return false;
if (!c2->has_bvar() || l_undef == c2.bvalue(s)) {
vector<signed_constraint> premises;