Avoir bench failure due to new bug bts 18953

examples/bts/18953.why

@@ -11,6 +11,7 @@ theory T
   goal g3 : (>) x 42
   goal g4 : (<=) x 42
   goal g5 : (>=) x 42
+(* does not parse
   goal g6 : (<>) x 42
-
+*)
 end