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arrays (#4684)

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* arrays

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

* arrays

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

* na

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

* arrays

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

* na

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

* fill

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

* update drat and fix euf bugs

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

* na

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

* na

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

* na

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

* const qualifiers

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

* na

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

* reorg ba

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

* reorg

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

* build warnings

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-09-13 19:29:59 -07:00 • committed by GitHub
parent d56dd1db7b
commit 796e2fd9eb
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79 changed files with 2571 additions and 1850 deletions
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22
src/sat/smt/euf_internalize.cpp
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@ -84,7 +84,7 @@ namespace euf {
void solver::attach_node(euf::enode* n) {
expr* e = n->get_expr();
if (!m.is_bool(e))
log_node(e);
drat_log_node(e);
else
attach_lit(literal(si.add_bool_var(e), false), e);
@ -98,20 +98,23 @@ namespace euf {
}
sat::literal solver::attach_lit(literal lit, expr* e) {
sat::bool_var v = lit.var();
s().set_external(v);
s().set_eliminated(v, false);
if (lit.sign()) {
sat::bool_var v = si.add_bool_var(e);
v = si.add_bool_var(e);
s().set_external(v);
s().set_eliminated(v, false);
sat::literal lit2 = literal(v, false);
s().mk_clause(~lit, lit2, sat::status::asserted());
s().mk_clause(lit, ~lit2, sat::status::asserted());
s().mk_clause(~lit, lit2, sat::status::th(m_is_redundant, m.get_basic_family_id()));
s().mk_clause(lit, ~lit2, sat::status::th(m_is_redundant, m.get_basic_family_id()));
lit = lit2;
}
sat::bool_var v = lit.var();
m_var2expr.reserve(v + 1, nullptr);
SASSERT(m_var2expr[v] == nullptr);
m_var2expr[v] = e;
m_var_trail.push_back(v);
s().set_external(v);
if (!m_egraph.find(e)) {
enode* n = m_egraph.mk(e, 0, nullptr);
m_egraph.set_merge_enabled(n, false);
@ -215,14 +218,11 @@ namespace euf {
void solver::axiomatize_basic(enode* n) {
expr* e = n->get_expr();
sat::status st = sat::status::th(m_is_redundant, m.get_basic_family_id());
if (m.is_ite(e)) {
expr* c = nullptr, * th = nullptr, * el = nullptr;
if (!m.is_bool(e) && m.is_ite(e, c, th, el)) {
app* a = to_app(e);
expr* c = a->get_arg(0);
expr* th = a->get_arg(1);
expr* el = a->get_arg(2);
sat::bool_var v = si.to_bool_var(c);
SASSERT(v != sat::null_bool_var);
SASSERT(!m.is_bool(e));
expr_ref eq_th(m.mk_eq(a, th), m);
expr_ref eq_el(m.mk_eq(a, el), m);
sat::literal lit_th = internalize(eq_th, false, false, m_is_redundant);