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Add forbidden interval lemma separately

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This commit is contained in:
Jakob Rath 2022-11-17 14:59:06 +01:00
parent b4ee8cef1a
commit dbe814d568
6 changed files with 41 additions and 24 deletions
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2
src/math/polysat/solver.cpp
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@ -959,8 +959,10 @@ namespace polysat {
void solver::assign_eval(sat::literal lit) {
// SASSERT(lit2cnstr(lit).is_currently_true(*this)); // "morally" this should hold, but currently fails because of pop_assignment during resolve_conflict
SASSERT(!lit2cnstr(lit).is_currently_false(*this));
unsigned level = 0;
// NOTE: constraint may be evaluated even if some variables are still unassigned (e.g., 0*x doesn't depend on x).
// TODO: level might be too low! because pop_assignment may already have removed necessary variables (cf. comment on assertion above).
for (auto v : lit2cnstr(lit)->vars())
if (is_assigned(v))
level = std::max(get_level(v), level);