diff -r faeee0e4ac50 -r fab0ea51063d src/HOL/SMT/Examples/cert/z3_bv_bit_06
--- a/src/HOL/SMT/Examples/cert/z3_bv_bit_06	Tue Feb 02 18:11:21 2010 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,4 +0,0 @@
-(benchmark Isabelle
-:assumption (not (= (concat bv3[4] bv15[6]) bv207[10]))
-:formula true
-)