From 59b0b56b421af33ba02e9662a19c3d69ef4bf371 Mon Sep 17 00:00:00 2001
From: Nikolaj Bjorner <nbjorner@microsoft.com>
Date: Thu, 10 Jan 2019 12:08:38 -0800
Subject: [PATCH] add checkpoints to blocked clause elimination to handle
 timeouts, #2080

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
---
 src/sat/sat_simplifier.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/sat/sat_simplifier.cpp b/src/sat/sat_simplifier.cpp
index 21d264af5..ca29a8501 100644
--- a/src/sat/sat_simplifier.cpp
+++ b/src/sat/sat_simplifier.cpp
@@ -1527,6 +1527,7 @@ namespace sat {
                     block_covered_binary(w, l, blocked, k);
                     break;
                 }
+                s.checkpoint();
             }
         }
 
@@ -1552,6 +1553,7 @@ namespace sat {
                     s.set_learned(c);
                     break;
                 }
+                s.checkpoint();
             }
         }