diff -r dc2236b19a3d -r 74515e8e6046 src/HOL/Predicate_Compile_Examples/IMP_3.thy
--- a/src/HOL/Predicate_Compile_Examples/IMP_3.thy	Fri Nov 11 08:32:45 2011 +0100
+++ b/src/HOL/Predicate_Compile_Examples/IMP_3.thy	Fri Nov 11 08:32:48 2011 +0100
@@ -29,7 +29,7 @@
 
 lemma
   "exec c s s' ==> exec (Seq c c) s s'"
-  quickcheck[tester = predicate_compile_ff_nofs, size=2, iterations=100, quiet = false, expect = counterexample]
+  quickcheck[tester = smart_exhaustive, size=2, iterations=100, quiet = false, expect = counterexample]
 oops