From 61ed4e5741408fa2203d3fc2303750e172155191 Mon Sep 17 00:00:00 2001
From: Nikolaj Bjorner <nbjorner@microsoft.com>
Date: Fri, 12 Jun 2015 18:30:33 -0700
Subject: [PATCH] strengthen quantifier check for PDR (and other engines) that
don't handle quantified predicates
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
---
src/muz/base/dl_context.cpp | 1 +
src/muz/base/rule_properties.cpp | 2 +-
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/src/muz/base/dl_context.cpp b/src/muz/base/dl_context.cpp
index 3555e5bdc..aeccd2633 100644
--- a/src/muz/base/dl_context.cpp
+++ b/src/muz/base/dl_context.cpp
@@ -567,6 +567,7 @@ namespace datalog {
m_rule_properties.check_uninterpreted_free();
break;
case QPDR_ENGINE:
+ std::cout << "QD\n";
m_rule_properties.collect(r);
m_rule_properties.check_for_negated_predicates();
m_rule_properties.check_uninterpreted_free();
diff --git a/src/muz/base/rule_properties.cpp b/src/muz/base/rule_properties.cpp
index 455e02e45..619f88e3b 100644
--- a/src/muz/base/rule_properties.cpp
+++ b/src/muz/base/rule_properties.cpp
@@ -142,7 +142,7 @@ void rule_properties::check_existential_tail() {
todo.push_back(e2);
}
else if (is_quantifier(e)) {
- todo.push_back(to_quantifier(e)->get_expr());
+ tocheck.push_back(to_quantifier(e)->get_expr());
}
else if ((m.is_eq(e, e1, e2) || m.is_iff(e, e1, e2)) &&
m.is_true(e1)) {