From 6ce9ac9bbdd4247f3fdb8ca4ade2f9b8a983f216 Mon Sep 17 00:00:00 2001
From: Alan Mishchenko <alanmi@berkeley.edu>
Date: Mon, 9 Jun 2014 08:14:45 -0700
Subject: Skip 'scorr' when the network has no primary inputs.

---
 src/base/abci/abc.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/base/abci/abc.c b/src/base/abci/abc.c
index 8d0b4d14..6ee1d63d 100644
--- a/src/base/abci/abc.c
+++ b/src/base/abci/abc.c
@@ -17658,6 +17658,12 @@ int Abc_CommandSeqSweep2( Abc_Frame_t * pAbc, int argc, char ** argv )
         return 0;
     }
 
+    if ( Abc_NtkPiNum(pNtk) == 0 )
+    {
+        Abc_Print( 0, "This command works only for designs with primary inputs.\n" );
+        return 0;
+    }
+
     // if constraints are to be used, network should have no constraints
     if ( nConstrs > 0 )
     {
-- 
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