diff -r b3b15305a1c9 -r c5c47703f763 src/HOL/Bali/DefiniteAssignmentCorrect.thy
--- a/src/HOL/Bali/DefiniteAssignmentCorrect.thy	Thu Feb 19 10:41:32 2004 +0100
+++ b/src/HOL/Bali/DefiniteAssignmentCorrect.thy	Thu Feb 19 15:57:34 2004 +0100
@@ -3429,7 +3429,7 @@
             by (cases s2) (simp add: abrupt_if_def)
           with brkAss_C1 s1_s2 s2_s3
           show ?thesis
-            by simp (blast intro: subset_trans)
+            by simp
         qed
         moreover from True nrmAss_C2 s2_s3
         have "nrm C2 \<subseteq> dom (locals (store s3))"