From 340b460f74d03da899608c9433e5be99a938b6aa Mon Sep 17 00:00:00 2001
From: Nikolaj Bjorner <nbjorner@microsoft.com>
Date: Wed, 27 Sep 2017 07:20:34 -0700
Subject: [PATCH] n/a

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
---
 src/sat/sat_lookahead.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/sat/sat_lookahead.cpp b/src/sat/sat_lookahead.cpp
index 8579e1c03..a289a3814 100644
--- a/src/sat/sat_lookahead.cpp
+++ b/src/sat/sat_lookahead.cpp
@@ -1117,6 +1117,7 @@ namespace sat {
             if (was_eliminated) continue;
 
             switch (c.size()) {
+            case 0: set_conflict(); break;
             case 1: assign(c[0]); break;
             case 2: add_binary(c[0],c[1]); break;
             case 3: add_ternary(c[0],c[1],c[2]); break;