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Remove redundant check for reference count in cache

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Nikolaj Bjorner 2026-06-16 09:35:51 -06:00 • committed by GitHub
parent eb775b2206
commit c48a4aa56a
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1 changed files with 2 additions and 2 deletions
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4
src/sat/tactic/goal2sat.cpp
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@ -261,13 +261,13 @@ struct goal2sat::imp : public sat::sat_internalizer {
void cache(app* t, sat::literal l) override {
force_push();
if (t->get_ref_count() <= 1)
return;
m_cache_trail.push_back(t);
// Only memoize nodes that can be revisited: a singly-referenced
// node appears once in the goal, so it never produces a cache hit.
// Skipping it keeps m_app2lit and m_lit2app in sync (both empty for
// such nodes) so pop()/uncache() clean up consistently.
if (t->get_ref_count() <= 1)
return;
SASSERT(!m_app2lit.contains(t));
SASSERT(!m_lit2app.contains(l.index()));
m_app2lit.insert(t, l);