diff -r cfbabca1b4e9 -r 38e1d4383262 lemon/cbc.cc
--- a/lemon/cbc.cc	Fri Feb 03 05:55:39 2012 +0100
+++ b/lemon/cbc.cc	Sun May 06 17:18:39 2012 +0200
@@ -435,8 +435,6 @@
     }
 
     _prob = new CoinModel();
-    rows.clear();
-    cols.clear();
   }
 
   void CbcMip::_messageLevel(MessageLevel level) {