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reorganize variable tracking for lemmas

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this is going to break a bunch
This commit is contained in:
Nikolaj Bjorner 2021-09-12 18:05:29 +02:00
parent deeb6c7784
commit f5fd295e01
9 changed files with 191 additions and 136 deletions
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40
src/math/polysat/explain.cpp
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@ -20,26 +20,26 @@ namespace polysat {
constraint_manager& explainer::cm() { return s().m_constraints; }
signed_constraint ex_polynomial_superposition::resolve1(pvar v, signed_constraint c1, signed_constraint c2) {
// c1 is true, c2 is false
SASSERT(c1.is_currently_true(s()));
SASSERT(c2.is_currently_false(s()));
LOG_H3("Resolving upon v" << v);
LOG("c1: " << c1);
LOG("c2: " << c2);
pdd a = c1->to_ule().p();
pdd b = c2->to_ule().p();
pdd r = a;
if (!a.resolve(v, b, r) && !b.resolve(v, a, r))
return {};
// Only keep result if the degree in c2 was reduced.
// (this condition might be too strict, but we use it for now to prevent looping)
if (b.degree(v) <= r.degree(v))
return {};
signed_constraint c = cm().eq(r);
LOG("resolved: " << c << " currently false? " << c.is_currently_false(s()));
if (!c.is_currently_false(s()))
return {};
return c;
// c1 is true, c2 is false
SASSERT(c1.is_currently_true(s()));
SASSERT(c2.is_currently_false(s()));
LOG_H3("Resolving upon v" << v);
LOG("c1: " << c1);
LOG("c2: " << c2);
pdd a = c1->to_ule().p();
pdd b = c2->to_ule().p();
pdd r = a;
if (!a.resolve(v, b, r) && !b.resolve(v, a, r))
return {};
// Only keep result if the degree in c2 was reduced.
// (this condition might be too strict, but we use it for now to prevent looping)
if (b.degree(v) <= r.degree(v))
return {};
signed_constraint c = cm().eq(r);
LOG("resolved: " << c << " currently false? " << c.is_currently_false(s()));
if (!c.is_currently_false(s()))
return {};
return c;
}
bool ex_polynomial_superposition::is_positive_equality_over(pvar v, signed_constraint const& c) {