diff -r 9c4daf15261c -r 2bb4a8d0111d src/HOL/Hoare_Parallel/Mul_Gar_Coll.thy
--- a/src/HOL/Hoare_Parallel/Mul_Gar_Coll.thy	Fri May 16 20:44:51 2025 +0200
+++ b/src/HOL/Hoare_Parallel/Mul_Gar_Coll.thy	Sun May 18 14:33:01 2025 +0000
@@ -1188,7 +1188,7 @@
 apply(simp_all add:Graph6 Graph7 Graph8 Append_to_free0 Append_to_free1 Graph12)
 \<comment> \<open>35 subgoals left\<close>
 apply(tactic \<open>TRYALL(EVERY'[resolve_tac \<^context> [disjI1],
-    resolve_tac \<^context> [subset_trans],
+    resolve_tac \<^context> @{thms subset_trans},
     eresolve_tac \<^context> @{thms Graph3},
     force_tac \<^context>,
     assume_tac \<^context>])\<close>)