src/Benchmarks/Quickcheck_Benchmark/Needham_Schroeder_Unguided_Attacker_Example.thy
--- a/src/Benchmarks/Quickcheck_Benchmark/Needham_Schroeder_Unguided_Attacker_Example.thy Sat Feb 13 12:33:55 2016 +0100
+++ b/src/Benchmarks/Quickcheck_Benchmark/Needham_Schroeder_Unguided_Attacker_Example.thy Sat Feb 13 12:39:00 2016 +0100
@@ -51,7 +51,7 @@
(*quickcheck[narrowing, size = 7, timeout = 200, expect = no_counterexample]*)
oops
-section {* Proving the counterexample trace for validation *}
+section \<open>Proving the counterexample trace for validation\<close>
lemma
assumes "A = Alice" "B = Bob" "C = Spy" "NA = 0" "NB = 1"