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bv fixes and tuning (#4703)

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* heap size information

* bv tuning

* fix #4701

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

* throw on set-has-size #4700

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-09-21 19:54:53 -07:00 • committed by GitHub
parent ba5c9c3883
commit b7ec4489a6
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21 changed files with 339 additions and 169 deletions
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28
src/sat/smt/euf_solver.cpp
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@ -227,7 +227,7 @@ namespace euf {
size_t* c = to_ptr(l);
SASSERT(is_literal(c));
SASSERT(l == get_literal(c));
if (m.is_eq(e) && n->num_args() == 2 && !sign) {
if (!sign && n->is_equality()) {
SASSERT(!m.is_iff(e));
euf::enode* na = n->get_arg(0);
euf::enode* nb = n->get_arg(1);
@ -237,9 +237,8 @@ namespace euf {
euf::enode* nb = sign ? mk_false() : mk_true();
m_egraph.merge(n, nb, c);
}
else if (m.is_eq(e) && n->num_args() == 2 && sign) {
m_egraph.new_diseq(n);
}
else if (sign && n->is_equality())
m_egraph.new_diseq(n);
}
@ -462,20 +461,23 @@ namespace euf {
}
bool solver::set_root(literal l, literal r) {
expr* e = bool_var2expr(l.var());
if (!e)
return true;
bool ok = true;
for (auto* s : m_solvers)
if (!s->set_root(l, r))
ok = false;
expr* e = bool_var2expr(l.var());
if (e) {
if (m.is_eq(e) && !m.is_iff(e))
ok = false;
euf::enode* n = get_enode(e);
if (n && n->merge_enabled())
ok = false;
}
if (m.is_eq(e) && !m.is_iff(e))
ok = false;
euf::enode* n = get_enode(e);
if (n && n->merge_enabled())
ok = false;
(void)ok;
TRACE("euf", tout << ok << " " << l << " -> " << r << "\n";);
return ok;
// roots cannot be eliminated as long as the egraph contains the expressions.
return false;
}
void solver::flush_roots() {