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remove unused bdd based variable elimination

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This commit is contained in:
Nikolaj Bjorner 2025-04-14 16:07:41 -07:00
parent e41090df83
commit 81f10912ae
5 changed files with 6 additions and 427 deletions
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23
src/sat/sat_simplifier.cpp
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@ -21,7 +21,6 @@ Revision History:
#include "sat/sat_simplifier.h"
#include "sat/sat_simplifier_params.hpp"
#include "sat/sat_solver.h"
#include "sat/sat_elim_vars.h"
#include "sat/sat_integrity_checker.h"
#include "util/stopwatch.h"
#include "util/trace.h"
@ -111,9 +110,6 @@ namespace sat {
bool simplifier::cce_enabled() const { return bce_enabled_base() && (m_cce || m_acce); }
bool simplifier::abce_enabled() const { return bce_enabled_base() && m_abce; }
bool simplifier::bca_enabled() const { return bce_enabled_base() && m_bca; }
bool simplifier::elim_vars_bdd_enabled() const {
return !m_incremental_mode && !s.tracking_assumptions() && m_elim_vars_bdd && m_num_calls >= m_elim_vars_bdd_delay && single_threaded();
}
bool simplifier::elim_vars_enabled() const {
return !m_incremental_mode && !s.tracking_assumptions() && m_elim_vars && single_threaded();
}
@ -2076,24 +2072,19 @@ namespace sat {
};
void simplifier::elim_vars() {
if (!elim_vars_enabled()) return;
if (!elim_vars_enabled())
return;
elim_var_report rpt(*this);
bool_var_vector vars;
order_vars_for_elim(vars);
sat::elim_vars elim_bdd(*this);
for (bool_var v : vars) {
checkpoint();
if (m_elim_counter < 0)
break;
if (is_external(v)) {
// skip
}
else if (try_eliminate(v)) {
m_num_elim_vars++;
}
else if (elim_vars_bdd_enabled() && elim_bdd(v)) {
m_num_elim_vars++;
}
if (is_external(v))
; // skip
else if (try_eliminate(v))
m_num_elim_vars++;
}
m_pos_cls.finalize();
@ -2126,8 +2117,6 @@ namespace sat {
m_subsumption = p.subsumption();
m_subsumption_limit = p.subsumption_limit();
m_elim_vars = p.elim_vars();
m_elim_vars_bdd = false && p.elim_vars_bdd(); // buggy?
m_elim_vars_bdd_delay = p.elim_vars_bdd_delay();
m_incremental_mode = s.get_config().m_incremental && !p.override_incremental();
}