--- a/src/HOL/Refute.thy Mon Oct 25 13:34:57 2010 +0200
+++ b/src/HOL/Refute.thy Mon Oct 25 13:34:57 2010 +0200
@@ -8,7 +8,7 @@
header {* Refute *}
theory Refute
-imports Hilbert_Choice List Sledgehammer
+imports Hilbert_Choice List
uses "Tools/refute.ML"
begin