diff -r be7dd3a8d6a3 -r 4764031c082c lemon/cbc.cc
--- a/lemon/cbc.cc	Fri Jan 20 19:20:02 2012 +0100
+++ b/lemon/cbc.cc	Sun May 06 16:52:11 2012 +0200
@@ -435,8 +435,6 @@
     }
 
     _prob = new CoinModel();
-    rows.clear();
-    cols.clear();
   }
 
   void CbcMip::_messageLevel(MessageLevel level) {