src/HOL/Tools/Predicate_Compile/predicate_compile.ML

      val options = extract_options (((expected_modes, proposed_modes), raw_options), const)
   in
     if (is_inductify options) then
       let
         val lthy' = Local_Theory.theory (preprocess options t) lthy
-          |> Local_Theory.checkpoint
         val const =
           case Predicate_Compile_Fun.pred_of_function (ProofContext.theory_of lthy') const of
             SOME c => c
           | NONE => const
         val _ = print_step options "Starting Predicate Compile Core..."