--- a/src/HOL/Tools/coinduction.ML Thu Aug 18 11:10:07 2016 +0200
+++ b/src/HOL/Tools/coinduction.ML Thu Aug 18 13:12:53 2016 +0200
@@ -50,7 +50,7 @@
SOME raw_thms => raw_thms
| NONE => goal |> Logic.strip_assums_concl |> find_coinduct);
val thy = Proof_Context.theory_of ctxt;
- val concl = Variable.focus NONE goal ctxt |> fst |> snd |> Logic.strip_imp_concl |> @{print};
+ val concl = Variable.focus NONE goal ctxt |> fst |> snd |> Logic.strip_imp_concl;
val raw_thm = (case find_first (fn thm =>
Pattern.matches thy (Thm.concl_of thm, concl)) raw_thms of
SOME thm => thm