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fix #1729

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2018-07-05 07:17:08 -07:00
parent adb9a1c797
commit f96133f4d9
4 changed files with 33 additions and 7 deletions
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6
src/tactic/goal.cpp
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@ -733,7 +733,9 @@ bool goal::is_cnf() const {
bool goal::is_literal(expr* f) const {
m_manager.is_not(f, f);
if (!is_app(f)) return false;
if (to_app(f)->get_family_id() == m_manager.get_basic_family_id() &&
!m_manager.is_false(f) && !m_manager.is_true(f)) return false;
if (to_app(f)->get_family_id() == m_manager.get_basic_family_id()) {
for (expr* arg : *to_app(f))
if (m_manager.is_bool(arg)) return false;
}
return true;
}