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adding dt-solver (#4739)

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* adding dt-solver

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

* dt

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

* move mbp to self-contained module

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

* files

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

* Create CMakeLists.txt

* dt

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

* rename to bool_var2expr to indicate type class

* mbp

* na
This commit is contained in:
Nikolaj Bjorner 2020-10-18 15:28:21 -07:00 • committed by GitHub
parent b77c57451f
commit 2f756da294
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62 changed files with 2309 additions and 1257 deletions
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13
src/sat/smt/euf_internalize.cpp
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@ -134,14 +134,14 @@ namespace euf {
lit = lit2;
}
m_var2expr.reserve(v + 1, nullptr);
if (m_var2expr[v]) {
m_bool_var2expr.reserve(v + 1, nullptr);
if (m_bool_var2expr[v]) {
SASSERT(m_egraph.find(e));
SASSERT(m_egraph.find(e)->bool_var() == v);
return lit;
}
TRACE("euf", tout << "attach " << v << " " << mk_bounded_pp(e, m) << "\n";);
m_var2expr[v] = e;
m_bool_var2expr[v] = e;
m_var_trail.push_back(v);
enode* n = m_egraph.find(e);
if (!n)
@ -367,12 +367,15 @@ namespace euf {
return true;
return false;
}
expr_ref solver::mk_eq(expr* e1, expr* e2) {
if (e1 == e2)
expr_ref _e1(e1, m);
expr_ref _e2(e2, m);
if (m.are_equal(e1, e2))
return expr_ref(m.mk_true(), m);
if (m.are_distinct(e1, e2))
return expr_ref(m.mk_false(), m);
expr_ref r(m.mk_eq(e2, e1), m);
if (!m_egraph.find(r))
r = m.mk_eq(e1, e2);