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move derivative cofactors cache into seq_derive

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Nikolaj Bjorner 2026-08-03 14:42:36 -07:00
parent 306c21498a
commit 38b6ced321
5 changed files with 22 additions and 65 deletions
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14
src/ast/rewriter/seq_monadic.cpp
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@ -98,17 +98,7 @@ lbool seq_monadic::nullable(expr* r) {
expr_ref_pair_vector const& seq_monadic::derivative_cofactors(expr* r) {
++m_stats.m_cofactor_calls;
expr_ref_pair_vector* v = nullptr;
if (m_cofactors.find(r, v))
return *v;
++m_stats.m_states;
v = alloc(expr_ref_pair_vector, m);
if (m_config.m_mode == transition_mode::light_antimirov)
m_rw.light_ant_derivative_cofactors(r, *v);
else
m_rw.brz_derivative_cofactors(r, *v);
m_cofactors.insert(r, v); // takes ownership of v and pins the key r
return *v;
return m_rw.get_derive().get_cached_cofactors(m_config.m_mode, r);
}
bool seq_monadic::live_states(expr* R, expr_ref_vector& out) {
@ -578,8 +568,8 @@ lbool seq_monadic::decide(membership_vec const& memberships) {
return l_true; // empty conjunction is vacuously true
reset_search(); // clear the caches before dropping the
m_pin.reset(); // pins that keep their keys alive
m_cofactors.maybe_reset(1u << 16); // cofactors persist across calls (own their pins)
m_rp_cache.maybe_reset(1u << 16);
m_rw.get_derive().maybe_reset_cached_cofactors(1u << 16);
m_budget = 200000;
m_giveup = false;
if (!prepare(memberships))