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bv and gc of literals (#4692)

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* bv and gc of literals

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

* overload

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

* diseq

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

* diseq

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-09-17 14:24:07 -07:00 • committed by GitHub
parent 2d52367368
commit 549753845e
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GPG key ID: 4AEE18F83AFDEB23
34 changed files with 1480 additions and 854 deletions
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30
src/sat/tactic/goal2sat.cpp
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@ -155,7 +155,10 @@ struct goal2sat::imp : public sat::sat_internalizer {
}
sat::bool_var add_var(bool is_ext, expr* n) {
auto v = m_solver.add_var(is_ext);
sat::bool_var v;
if (m_expr2var_replay && m_expr2var_replay->find(n, v))
return v;
v = m_solver.add_var(is_ext);
log_node(n);
log_def(v, n);
return v;
@ -298,18 +301,17 @@ struct goal2sat::imp : public sat::sat_internalizer {
}
}
bool process_cached(app * t, bool root, bool sign) {
sat::literal l;
if (m_cache.find(t, l)) {
if (sign)
l.neg();
if (root)
mk_root_clause(l);
else
m_result_stack.push_back(l);
return true;
}
return false;
bool process_cached(app* t, bool root, bool sign) {
sat::literal l = sat::null_literal;
if (!m_cache.find(t, l))
return false;
if (sign)
l.neg();
if (root)
mk_root_clause(l);
else
m_result_stack.push_back(l);
return true;
}
bool visit(expr * t, bool root, bool sign) {
@ -321,7 +323,7 @@ struct goal2sat::imp : public sat::sat_internalizer {
if (process_cached(to_app(t), root, sign))
return true;
if (to_app(t)->get_family_id() != m.get_basic_family_id())
return convert_app(to_app(t), root, sign);
return convert_app(to_app(t), root, sign);
switch (to_app(t)->get_decl_kind()) {
case OP_NOT:
case OP_OR: