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optimizations to bv-solver and euf-egraph (#4698)

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* additional bit-vector propagators

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* rename restrict (not a keyword, but well) #4694, tune euf

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* merge

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* add pb rewriting to pb2bv #4697

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-09-20 06:47:27 -07:00 • committed by GitHub
parent ed44a44579
commit 6f63f8761c
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GPG key ID: 4AEE18F83AFDEB23
24 changed files with 206 additions and 116 deletions
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11
src/sat/tactic/goal2sat.cpp
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@ -136,7 +136,7 @@ struct goal2sat::imp : public sat::sat_internalizer {
void mk_root_clause(sat::literal l) {
TRACE("goal2sat", tout << "mk_clause: " << l << "\n";);
m_solver.add_clause(1, &l, m_is_redundant ? mk_status() : sat::status::input());
m_solver.add_clause(1, &l, m_is_redundant ? mk_status() : sat::status::input());
}
void mk_root_clause(sat::literal l1, sat::literal l2) {
@ -191,9 +191,12 @@ struct goal2sat::imp : public sat::sat_internalizer {
sat::bool_var to_bool_var(expr* e) override {
sat::literal l;
sat::bool_var v = m_map.to_bool_var(e);
if (v != sat::null_bool_var)
return v;
if (is_app(e) && m_cache.find(to_app(e), l) && !l.sign())
return l.var();
return m_map.to_bool_var(e);
return sat::null_bool_var;
}
@ -399,6 +402,7 @@ struct goal2sat::imp : public sat::sat_internalizer {
if (m_aig)
m_aig->add_or(l, num, aig_lits.c_ptr());
m_solver.set_phase(~l);
m_result_stack.shrink(old_sz);
if (sign)
l.neg();
@ -450,7 +454,8 @@ struct goal2sat::imp : public sat::sat_internalizer {
mk_clause(num+1, lits);
if (m_aig) {
m_aig->add_and(l, num, aig_lits.c_ptr());
}
}
m_solver.set_phase(l);
if (sign)
l.neg();