From b3e6cb30bb9e37e688ac11f6f69156646676c11c Mon Sep 17 00:00:00 2001
From: Alan Mishchenko <alanmi@berkeley.edu>
Date: Mon, 27 Apr 2015 13:56:17 -0700
Subject: Bug fix in %read_smt and prevent crash of &cec if there is no current
 AIG.

---
 src/base/abci/abc.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'src/base/abci')

diff --git a/src/base/abci/abc.c b/src/base/abci/abc.c
index e9df4ec2..4de17f26 100644
--- a/src/base/abci/abc.c
+++ b/src/base/abci/abc.c
@@ -31034,6 +31034,11 @@ int Abc_CommandAbc9Cec( Abc_Frame_t * pAbc, int argc, char ** argv )
             goto usage;
         }
     }
+    if ( pAbc->pGia == NULL )
+    {
+        Abc_Print( -1, "Abc_CommandAbc9Cec(): There is no AIG.\n" );
+        return 1;
+    }
     if ( fMiter )
     {
         if ( fDualOutput )
-- 
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