src/HOL/Tools/Quickcheck/narrowing_generators.ML
author bulwahn
Mon, 17 Oct 2011 10:19:01 +0200
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moving some common functions from quickcheck to the more HOL-specific quickcheck_common; renamed inductive_SML's configurations to more canonical names; adds automatically left and right hand sides of equations as evaluation terms
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(*  Title:      HOL/Tools/Quickcheck/narrowing_generators.ML
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    Author:     Lukas Bulwahn, TU Muenchen
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Narrowing-based counterexample generation.
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*)
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signature NARROWING_GENERATORS =
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sig
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  val allow_existentials : bool Config.T
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  val finite_functions : bool Config.T
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  val overlord : bool Config.T
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  val active : bool Config.T
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  val test_term: Proof.context -> bool * bool -> term * term list -> Quickcheck.result
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  datatype counterexample = Universal_Counterexample of (term * counterexample)
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    | Existential_Counterexample of (term * counterexample) list
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    | Empty_Assignment
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  val put_counterexample: (unit -> term list option) -> Proof.context -> Proof.context
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  val put_existential_counterexample : (unit -> counterexample option) -> Proof.context -> Proof.context
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  val setup: theory -> theory
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end;
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structure Narrowing_Generators : NARROWING_GENERATORS =
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struct
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(* configurations *)
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val allow_existentials = Attrib.setup_config_bool @{binding quickcheck_allow_existentials} (K true)
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val finite_functions = Attrib.setup_config_bool @{binding quickcheck_finite_functions} (K true)
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val overlord = Attrib.setup_config_bool @{binding quickcheck_narrowing_overlord} (K false)
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(* partial_term_of instances *)
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fun mk_partial_term_of (x, T) =
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  Const (@{const_name Quickcheck_Narrowing.partial_term_of_class.partial_term_of},
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    Term.itselfT T --> @{typ narrowing_term} --> @{typ Code_Evaluation.term})
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      $ Const ("TYPE", Term.itselfT T) $ x
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(** formal definition **)
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fun add_partial_term_of tyco raw_vs thy =
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  let
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    val vs = map (fn (v, _) => (v, @{sort typerep})) raw_vs;
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    val ty = Type (tyco, map TFree vs);
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    val lhs = Const (@{const_name partial_term_of},
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        Term.itselfT ty --> @{typ narrowing_term} --> @{typ Code_Evaluation.term})
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      $ Free ("x", Term.itselfT ty) $ Free ("t", @{typ narrowing_term});
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    val rhs = @{term "undefined :: Code_Evaluation.term"};
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    val eq = HOLogic.mk_Trueprop (HOLogic.mk_eq (lhs, rhs));
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    fun triv_name_of t = (fst o dest_Free o fst o strip_comb o fst
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      o HOLogic.dest_eq o HOLogic.dest_Trueprop) t ^ "_triv";
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  in
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    thy
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    |> Class.instantiation ([tyco], vs, @{sort partial_term_of})
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    |> `(fn lthy => Syntax.check_term lthy eq)
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    |-> (fn eq => Specification.definition (NONE, ((Binding.name (triv_name_of eq), []), eq)))
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    |> snd
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    |> Class.prove_instantiation_exit (K (Class.intro_classes_tac []))
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  end;
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fun ensure_partial_term_of (tyco, (raw_vs, _)) thy =
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  let
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    val need_inst = not (can (Sorts.mg_domain (Sign.classes_of thy) tyco) @{sort partial_term_of})
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      andalso can (Sorts.mg_domain (Sign.classes_of thy) tyco) @{sort typerep};
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  in if need_inst then add_partial_term_of tyco raw_vs thy else thy end;
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(** code equations for datatypes **)
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fun mk_partial_term_of_eq thy ty (i, (c, (_, tys))) =
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  let
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    val frees = map Free (Name.invent_names Name.context "a" (map (K @{typ narrowing_term}) tys))
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    val narrowing_term = @{term "Quickcheck_Narrowing.Ctr"} $ HOLogic.mk_number @{typ code_int} i
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      $ (HOLogic.mk_list @{typ narrowing_term} (rev frees))
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    val rhs = fold (fn u => fn t => @{term "Code_Evaluation.App"} $ t $ u)
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        (map mk_partial_term_of (frees ~~ tys))
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        (@{term "Code_Evaluation.Const"} $ HOLogic.mk_literal c $ HOLogic.mk_typerep (tys ---> ty))
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    val insts =
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      map (SOME o Thm.cterm_of thy o map_types Logic.unvarifyT_global o Logic.varify_global)
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        [Free ("ty", Term.itselfT ty), narrowing_term, rhs]
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    val cty = Thm.ctyp_of thy ty;
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  in
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    @{thm partial_term_of_anything}
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    |> Drule.instantiate' [SOME cty] insts
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    |> Thm.varifyT_global
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  end
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fun add_partial_term_of_code tyco raw_vs raw_cs thy =
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  let
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    val algebra = Sign.classes_of thy;
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    val vs = map (fn (v, sort) =>
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      (v, curry (Sorts.inter_sort algebra) @{sort typerep} sort)) raw_vs;
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    val ty = Type (tyco, map TFree vs);
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    val cs = (map o apsnd o apsnd o map o map_atyps)
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      (fn TFree (v, _) => TFree (v, (the o AList.lookup (op =) vs) v)) raw_cs;
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    val const = AxClass.param_of_inst thy (@{const_name partial_term_of}, tyco);
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    val var_insts = map (SOME o Thm.cterm_of thy o map_types Logic.unvarifyT_global o Logic.varify_global)
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        [Free ("ty", Term.itselfT ty), @{term "Quickcheck_Narrowing.Var p tt"},
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          @{term "Code_Evaluation.Free (STR ''_'')"} $ HOLogic.mk_typerep ty]
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    val var_eq =
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      @{thm partial_term_of_anything}
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      |> Drule.instantiate' [SOME (Thm.ctyp_of thy ty)] var_insts
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      |> Thm.varifyT_global
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    val eqs = var_eq :: map_index (mk_partial_term_of_eq thy ty) cs;
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 in
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    thy
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    |> Code.del_eqns const
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    |> fold Code.add_eqn eqs
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  end;
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fun ensure_partial_term_of_code (tyco, (raw_vs, cs)) thy =
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  let
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    val has_inst = can (Sorts.mg_domain (Sign.classes_of thy) tyco) @{sort partial_term_of};
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  in if has_inst then add_partial_term_of_code tyco raw_vs cs thy else thy end;
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(* narrowing generators *)
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(** narrowing specific names and types **)
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exception FUNCTION_TYPE;
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val narrowingN = "narrowing";
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fun narrowingT T =
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  @{typ Quickcheck_Narrowing.code_int} --> Type (@{type_name Quickcheck_Narrowing.cons}, [T])
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fun mk_empty T = Const (@{const_name Quickcheck_Narrowing.empty}, narrowingT T)
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fun mk_cons c T = Const (@{const_name Quickcheck_Narrowing.cons}, T --> narrowingT T) $ Const (c, T)
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fun mk_apply (T, t) (U, u) =
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  let
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    val (_, U') = dest_funT U
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  in
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    (U', Const (@{const_name Quickcheck_Narrowing.apply},
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      narrowingT U --> narrowingT T --> narrowingT U') $ u $ t)
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  end
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fun mk_sum (t, u) =
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  let
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    val T = fastype_of t
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  in
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    Const (@{const_name Quickcheck_Narrowing.sum}, T --> T --> T) $ t $ u
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  end
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(** deriving narrowing instances **)
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fun mk_equations descr vs tycos narrowings (Ts, Us) =
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  let
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    fun mk_call T =
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      (T, Const (@{const_name "Quickcheck_Narrowing.narrowing_class.narrowing"}, narrowingT T))
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    fun mk_aux_call fTs (k, _) (tyco, Ts) =
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      let
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        val T = Type (tyco, Ts)
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        val _ = if not (null fTs) then raise FUNCTION_TYPE else ()
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      in
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        (T, nth narrowings k)
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      end
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    fun mk_consexpr simpleT (c, xs) =
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      let
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        val Ts = map fst xs
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      in snd (fold mk_apply xs (Ts ---> simpleT, mk_cons c (Ts ---> simpleT))) end
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    fun mk_rhs exprs = foldr1 mk_sum exprs
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    val rhss =
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      Datatype_Aux.interpret_construction descr vs
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        { atyp = mk_call, dtyp = mk_aux_call }
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      |> (map o apfst) Type
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      |> map (fn (T, cs) => map (mk_consexpr T) cs)
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      |> map mk_rhs
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    val lhss = narrowings
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    val eqs = map (HOLogic.mk_Trueprop o HOLogic.mk_eq) (lhss ~~ rhss)
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  in
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    eqs
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  end
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fun contains_recursive_type_under_function_types xs =
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  exists (fn (_, (_, _, cs)) => cs |> exists (snd #> exists (fn dT =>
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    (case Datatype_Aux.strip_dtyp dT of (_ :: _, Datatype.DtRec _) => true | _ => false)))) xs
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fun instantiate_narrowing_datatype config descr vs tycos prfx (names, auxnames) (Ts, Us) thy =
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  let
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    val _ = Datatype_Aux.message config "Creating narrowing generators ...";
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    val narrowingsN = map (prefix (narrowingN ^ "_")) (names @ auxnames);
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  in
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    if not (contains_recursive_type_under_function_types descr) then
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      thy
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      |> Class.instantiation (tycos, vs, @{sort narrowing})
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      |> Quickcheck_Common.define_functions
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        (fn narrowings => mk_equations descr vs tycos narrowings (Ts, Us), NONE)
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        prfx [] narrowingsN (map narrowingT (Ts @ Us))
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      |> Class.prove_instantiation_exit (K (Class.intro_classes_tac []))
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    else
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      thy
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  end;
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(* testing framework *)
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val target = "Haskell_Quickcheck"
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(** invocation of Haskell interpreter **)
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val narrowing_engine =
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  Context.>>> (Context.map_theory_result
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    (Thy_Load.use_file (Path.explode "Tools/Quickcheck/Narrowing_Engine.hs")))
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val pnf_narrowing_engine =
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  Context.>>> (Context.map_theory_result
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    (Thy_Load.use_file (Path.explode "Tools/Quickcheck/PNF_Narrowing_Engine.hs")))
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fun exec verbose code =
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  ML_Context.exec (fn () => Secure.use_text ML_Env.local_context (0, "generated code") verbose code)
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fun with_overlord_dir name f =
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  let
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    val path =
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      Path.append (Path.explode "$ISABELLE_HOME_USER") (Path.basic (name ^ serial_string ()))
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    val _ = Isabelle_System.mkdirs path;
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  in Exn.release (Exn.capture f path) end;
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fun elapsed_time description e =
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  let val ({elapsed, ...}, result) = Timing.timing e ()
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  in (result, (description, Time.toMilliseconds elapsed)) end
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fun value (contains_existentials, opts) ctxt cookie (code, value_name) =
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  let
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    val (limit_time, is_interactive, timeout, quiet, size) = opts
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    val (get, put, put_ml) = cookie
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    fun message s = if quiet then () else Output.urgent_message s
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    val current_size = Unsynchronized.ref 0
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    val current_result = Unsynchronized.ref Quickcheck.empty_result 
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    fun excipit () =
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      "Quickcheck ran out of time while testing at size " ^ string_of_int (!current_size)
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    val tmp_prefix = "Quickcheck_Narrowing"
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    val with_tmp_dir =
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      if Config.get ctxt overlord then with_overlord_dir else Isabelle_System.with_tmp_dir 
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    fun run in_path = 
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      let
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        val code_file = Path.append in_path (Path.basic "Generated_Code.hs")
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        val narrowing_engine_file = Path.append in_path (Path.basic "Narrowing_Engine.hs")
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        val main_file = Path.append in_path (Path.basic "Main.hs")
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        val main = "module Main where {\n\n" ^
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          "import System;\n" ^
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          "import Narrowing_Engine;\n" ^
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          "import Generated_Code;\n\n" ^
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          "main = getArgs >>= \\[size] -> Narrowing_Engine.depthCheck (read size) (Generated_Code.value ())\n\n" ^
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          "}\n"
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        val code' = prefix "module Generated_Code where {\n\ndata Typerep = Typerep String [Typerep];\n"
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          (unprefix "module Generated_Code where {" code)
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        val _ = File.write code_file code'
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        val _ = File.write narrowing_engine_file
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          (if contains_existentials then pnf_narrowing_engine else narrowing_engine)
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        val _ = File.write main_file main
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        val executable = File.shell_path (Path.append in_path (Path.basic "isabelle_quickcheck_narrowing"))
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        val cmd = "exec \"$ISABELLE_GHC\" " ^ Code_Haskell.language_params ^ " " ^
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          (space_implode " " (map File.shell_path [code_file, narrowing_engine_file, main_file])) ^
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          " -o " ^ executable ^ ";"
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        val (result, compilation_time) =
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          elapsed_time "Haskell compilation" (fn () => Isabelle_System.bash cmd) 
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        val _ = Quickcheck.add_timing compilation_time current_result
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        val _ = if Isabelle_System.bash cmd <> 0 then error "Compilation with GHC failed" else ()
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        fun with_size k =
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          if k > size then
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            (NONE, !current_result)
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          else
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            let
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              val _ = message ("[Quickcheck-Narrowing] Test data size: " ^ string_of_int k)
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              val _ = current_size := k
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              val ((response, _), timing) = elapsed_time ("execution of size " ^ string_of_int k)
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                (fn () => Isabelle_System.bash_output (executable ^ " " ^ string_of_int k))
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              val _ = Quickcheck.add_timing timing current_result
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            in
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              if response = "NONE\n" then
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                with_size (k + 1)
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              else
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                let
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                  val output_value = the_default "NONE"
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                    (try (snd o split_last o filter_out (fn s => s = "") o split_lines) response)
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                    |> translate_string (fn s => if s = "\\" then "\\\\" else s)
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                  val ml_code = "\nval _ = Context.set_thread_data (SOME (Context.map_proof (" ^ put_ml
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                    ^ " (fn () => " ^ output_value ^ ")) (ML_Context.the_generic_context ())))";
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                  val ctxt' = ctxt
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                    |> put (fn () => error ("Bad evaluation for " ^ quote put_ml))
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                    |> Context.proof_map (exec false ml_code);
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                in (get ctxt' (), !current_result) end
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            end 
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      in with_size 0 end
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  in
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    (*Quickcheck.limit timeout (limit_time, is_interactive) 
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      (fn () =>*) with_tmp_dir tmp_prefix run
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      (*(fn () => (message (excipit ()); (NONE, !current_result))) ()*)
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  end;
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fun dynamic_value_strict opts cookie thy postproc t =
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  let
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    val ctxt = Proof_Context.init_global thy
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    fun evaluator naming program ((_, vs_ty), t) deps = Exn.interruptible_capture (value opts ctxt cookie)
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      (Code_Target.evaluator thy target naming program deps (vs_ty, t));    
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  in Exn.release (Code_Thingol.dynamic_value thy (Exn.map_result o postproc) evaluator t) end;
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(** counterexample generator **)
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structure Counterexample = Proof_Data
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(
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  type T = unit -> term list option
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  fun init _ () = error "Counterexample"
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)
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datatype counterexample = Universal_Counterexample of (term * counterexample)
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  | Existential_Counterexample of (term * counterexample) list
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  | Empty_Assignment
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fun map_counterexample f Empty_Assignment = Empty_Assignment
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  | map_counterexample f (Universal_Counterexample (t, c)) =
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      Universal_Counterexample (f t, map_counterexample f c)
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  | map_counterexample f (Existential_Counterexample cs) =
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      Existential_Counterexample (map (fn (t, c) => (f t, map_counterexample f c)) cs)
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structure Existential_Counterexample = Proof_Data
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(
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  type T = unit -> counterexample option
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  fun init _ () = error "Counterexample"
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)
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val put_existential_counterexample = Existential_Counterexample.put
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val put_counterexample = Counterexample.put
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fun finitize_functions (xTs, t) =
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  let
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    val (names, boundTs) = split_list xTs
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    fun mk_eval_ffun dT rT =
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      Const (@{const_name "Quickcheck_Narrowing.eval_ffun"}, 
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        Type (@{type_name "Quickcheck_Narrowing.ffun"}, [dT, rT]) --> dT --> rT)
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    fun mk_eval_cfun dT rT =
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      Const (@{const_name "Quickcheck_Narrowing.eval_cfun"}, 
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        Type (@{type_name "Quickcheck_Narrowing.cfun"}, [rT]) --> dT --> rT)
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    fun eval_function (T as Type (@{type_name fun}, [dT, rT])) =
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      let
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        val (rt', rT') = eval_function rT
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      in
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        case dT of
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          Type (@{type_name fun}, _) =>
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            (fn t => absdummy dT (rt' (mk_eval_cfun dT rT' $ incr_boundvars 1 t $ Bound 0)),
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              Type (@{type_name "Quickcheck_Narrowing.cfun"}, [rT']))
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        | _ =>
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            (fn t => absdummy dT (rt' (mk_eval_ffun dT rT' $ incr_boundvars 1 t $ Bound 0)),
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              Type (@{type_name "Quickcheck_Narrowing.ffun"}, [dT, rT']))
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      end
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      | eval_function T = (I, T)
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    val (tt, boundTs') = split_list (map eval_function boundTs)
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    val t' = subst_bounds (map2 (fn f => fn x => f x) (rev tt) (map_index (Bound o fst) boundTs), t)
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  in
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    (names ~~ boundTs', t')
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  end
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fun dest_ffun (Type (@{type_name "Quickcheck_Narrowing.ffun"}, [dT, rT])) = (dT, rT)
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fun eval_finite_functions (Const (@{const_name "Quickcheck_Narrowing.ffun.Constant"}, T) $ value) =
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    absdummy (fst (dest_ffun (body_type T))) (eval_finite_functions value)
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  | eval_finite_functions (Const (@{const_name "Quickcheck_Narrowing.ffun.Update"}, T) $ a $ b $ f) =
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    let
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      val (T1, T2) = dest_ffun (body_type T)
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    in
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      Quickcheck_Common.mk_fun_upd T1 T2
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   365
        (eval_finite_functions a, eval_finite_functions b) (eval_finite_functions f)
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   366
    end
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   367
  | eval_finite_functions t = t
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diff changeset
   368
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   369
(** tester **)
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   370
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   371
val rewrs =
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   372
    map (swap o HOLogic.dest_eq o HOLogic.dest_Trueprop o Thm.prop_of)
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   373
      (@{thms all_simps} @ @{thms ex_simps})
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   374
    @ map (HOLogic.dest_eq o HOLogic.dest_Trueprop o Thm.prop_of)
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   375
        [@{thm iff_conv_conj_imp}, @{thm not_ex}, @{thm not_all}]
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   376
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   377
fun make_pnf_term thy t = Pattern.rewrite_term thy rewrs [] t
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diff changeset
   378
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   379
fun strip_quantifiers (Const (@{const_name Ex}, _) $ Abs (x, T, t)) =
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   380
    apfst (cons (@{const_name Ex}, (x, T))) (strip_quantifiers t)
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   381
  | strip_quantifiers (Const (@{const_name All}, _) $ Abs (x, T, t)) =
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parents: 43114
diff changeset
   382
    apfst (cons (@{const_name All}, (x, T))) (strip_quantifiers t)
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diff changeset
   383
  | strip_quantifiers t = ([], t)
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diff changeset
   384
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   385
fun contains_existentials t = exists (fn (Q, _) => Q = @{const_name Ex}) (fst (strip_quantifiers t))
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parents: 43114
diff changeset
   386
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diff changeset
   387
fun mk_property qs t =
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   388
  let
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diff changeset
   389
    fun enclose (@{const_name Ex}, (x, T)) t =
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parents: 43114
diff changeset
   390
        Const (@{const_name Quickcheck_Narrowing.exists}, (T --> @{typ property}) --> @{typ property})
8f5c3c6c2909 adding compilation that allows existentials in Quickcheck_Narrowing
bulwahn
parents: 43114
diff changeset
   391
          $ Abs (x, T, t)
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parents: 43114
diff changeset
   392
      | enclose (@{const_name All}, (x, T)) t =
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parents: 43114
diff changeset
   393
        Const (@{const_name Quickcheck_Narrowing.all}, (T --> @{typ property}) --> @{typ property})
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parents: 43114
diff changeset
   394
          $ Abs (x, T, t)
8f5c3c6c2909 adding compilation that allows existentials in Quickcheck_Narrowing
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parents: 43114
diff changeset
   395
  in
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parents: 44926
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   396
    fold_rev enclose qs (@{term Quickcheck_Narrowing.Property} $ t)
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diff changeset
   397
  end
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diff changeset
   398
8f5c3c6c2909 adding compilation that allows existentials in Quickcheck_Narrowing
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diff changeset
   399
fun mk_case_term ctxt p ((@{const_name Ex}, (x, T)) :: qs') (Existential_Counterexample cs) =
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f9283eb3a4bf fixing code generation test
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parents: 43314
diff changeset
   400
    Datatype.make_case ctxt Datatype_Case.Quiet [] (Free (x, T)) (map (fn (t, c) =>
f9283eb3a4bf fixing code generation test
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parents: 43314
diff changeset
   401
      (t, mk_case_term ctxt (p - 1) qs' c)) cs)
43237
8f5c3c6c2909 adding compilation that allows existentials in Quickcheck_Narrowing
bulwahn
parents: 43114
diff changeset
   402
  | mk_case_term ctxt p ((@{const_name All}, (x, T)) :: qs') (Universal_Counterexample (t, c)) =
8f5c3c6c2909 adding compilation that allows existentials in Quickcheck_Narrowing
bulwahn
parents: 43114
diff changeset
   403
    if p = 0 then t else mk_case_term ctxt (p - 1) qs' c
8f5c3c6c2909 adding compilation that allows existentials in Quickcheck_Narrowing
bulwahn
parents: 43114
diff changeset
   404
45039
632a033616e9 adding post-processing of terms to narrowing-based Quickcheck
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diff changeset
   405
val post_process = (perhaps (try Quickcheck_Common.post_process_term)) o eval_finite_functions
632a033616e9 adding post-processing of terms to narrowing-based Quickcheck
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parents: 45002
diff changeset
   406
43237
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diff changeset
   407
fun mk_terms ctxt qs result =
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diff changeset
   408
  let
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parents: 43114
diff changeset
   409
    val
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bulwahn
parents: 43114
diff changeset
   410
      ps = filter (fn (_, (@{const_name All}, _)) => true | _ => false) (map_index I qs)
8f5c3c6c2909 adding compilation that allows existentials in Quickcheck_Narrowing
bulwahn
parents: 43114
diff changeset
   411
    in
8f5c3c6c2909 adding compilation that allows existentials in Quickcheck_Narrowing
bulwahn
parents: 43114
diff changeset
   412
      map (fn (p, (_, (x, T))) => (x, mk_case_term ctxt p qs result)) ps
45039
632a033616e9 adding post-processing of terms to narrowing-based Quickcheck
bulwahn
parents: 45002
diff changeset
   413
      |> map (apsnd post_process)
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diff changeset
   414
    end
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parents: 43114
diff changeset
   415
  
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diff changeset
   416
fun test_term ctxt (limit_time, is_interactive) (t, eval_terms) =
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   417
  let
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diff changeset
   418
    fun dest_result (Quickcheck.Result r) = r 
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diff changeset
   419
    val opts =
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parents: 43379
diff changeset
   420
      (limit_time, is_interactive, seconds (Config.get ctxt Quickcheck.timeout),
ea959ab7bbe3 adding timeout to quickcheck narrowing
bulwahn
parents: 43379
diff changeset
   421
        Config.get ctxt Quickcheck.quiet, Config.get ctxt Quickcheck.size)
42361
23f352990944 modernized structure Proof_Context;
wenzelm
parents: 42258
diff changeset
   422
    val thy = Proof_Context.theory_of ctxt
43237
8f5c3c6c2909 adding compilation that allows existentials in Quickcheck_Narrowing
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parents: 43114
diff changeset
   423
    val t' = fold_rev (fn (x, T) => fn t => HOLogic.mk_all (x, T, t)) (Term.add_frees t []) t
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diff changeset
   424
    val pnf_t = make_pnf_term thy t'
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parents:
diff changeset
   425
  in
43237
8f5c3c6c2909 adding compilation that allows existentials in Quickcheck_Narrowing
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parents: 43114
diff changeset
   426
    if Config.get ctxt allow_existentials andalso contains_existentials pnf_t then
8f5c3c6c2909 adding compilation that allows existentials in Quickcheck_Narrowing
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parents: 43114
diff changeset
   427
      let
43240
da47097bd589 adding finitize_functions and processing of equivalences in existential compilation in quickcheck_narrowing
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diff changeset
   428
        fun wrap f (qs, t) =
da47097bd589 adding finitize_functions and processing of equivalences in existential compilation in quickcheck_narrowing
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parents: 43237
diff changeset
   429
          let val (qs1, qs2) = split_list qs in
da47097bd589 adding finitize_functions and processing of equivalences in existential compilation in quickcheck_narrowing
bulwahn
parents: 43237
diff changeset
   430
          apfst (map2 pair qs1) (f (qs2, t)) end
da47097bd589 adding finitize_functions and processing of equivalences in existential compilation in quickcheck_narrowing
bulwahn
parents: 43237
diff changeset
   431
        val finitize = if Config.get ctxt finite_functions then wrap finitize_functions else I
da47097bd589 adding finitize_functions and processing of equivalences in existential compilation in quickcheck_narrowing
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parents: 43237
diff changeset
   432
        val (qs, prop_t) = finitize (strip_quantifiers pnf_t)
43585
ea959ab7bbe3 adding timeout to quickcheck narrowing
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parents: 43379
diff changeset
   433
        val (counterexample, result) = dynamic_value_strict (true, opts)
43237
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parents: 43114
diff changeset
   434
          (Existential_Counterexample.get, Existential_Counterexample.put,
8f5c3c6c2909 adding compilation that allows existentials in Quickcheck_Narrowing
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parents: 43114
diff changeset
   435
            "Narrowing_Generators.put_existential_counterexample")
45002
df36896aae0f removing superfluous definition in the quickcheck narrowing invocation as the code generator now generates valid Haskell code with necessary type annotations without a separate definition
bulwahn
parents: 44926
diff changeset
   436
          thy (apfst o Option.map o map_counterexample) (mk_property qs prop_t)
43237
8f5c3c6c2909 adding compilation that allows existentials in Quickcheck_Narrowing
bulwahn
parents: 43114
diff changeset
   437
      in
43585
ea959ab7bbe3 adding timeout to quickcheck narrowing
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parents: 43379
diff changeset
   438
        Quickcheck.Result
45002
df36896aae0f removing superfluous definition in the quickcheck narrowing invocation as the code generator now generates valid Haskell code with necessary type annotations without a separate definition
bulwahn
parents: 44926
diff changeset
   439
         {counterexample = Option.map (mk_terms ctxt qs) counterexample,
43585
ea959ab7bbe3 adding timeout to quickcheck narrowing
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diff changeset
   440
          evaluation_terms = Option.map (K []) counterexample,
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parents: 43379
diff changeset
   441
          timings = #timings (dest_result result), reports = #reports (dest_result result)}
43237
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parents: 43114
diff changeset
   442
      end
43240
da47097bd589 adding finitize_functions and processing of equivalences in existential compilation in quickcheck_narrowing
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parents: 43237
diff changeset
   443
    else
da47097bd589 adding finitize_functions and processing of equivalences in existential compilation in quickcheck_narrowing
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parents: 43237
diff changeset
   444
      let
44241
7943b69f0188 modernized signature of Term.absfree/absdummy;
wenzelm
parents: 43915
diff changeset
   445
        val t' = fold_rev absfree (Term.add_frees t []) t
43240
da47097bd589 adding finitize_functions and processing of equivalences in existential compilation in quickcheck_narrowing
bulwahn
parents: 43237
diff changeset
   446
        fun wrap f t = list_abs (f (strip_abs t))
da47097bd589 adding finitize_functions and processing of equivalences in existential compilation in quickcheck_narrowing
bulwahn
parents: 43237
diff changeset
   447
        val finitize = if Config.get ctxt finite_functions then wrap finitize_functions else I
da47097bd589 adding finitize_functions and processing of equivalences in existential compilation in quickcheck_narrowing
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parents: 43237
diff changeset
   448
        fun ensure_testable t =
da47097bd589 adding finitize_functions and processing of equivalences in existential compilation in quickcheck_narrowing
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parents: 43237
diff changeset
   449
          Const (@{const_name Quickcheck_Narrowing.ensure_testable}, fastype_of t --> fastype_of t) $ t
43585
ea959ab7bbe3 adding timeout to quickcheck narrowing
bulwahn
parents: 43379
diff changeset
   450
        val (counterexample, result) = dynamic_value_strict (false, opts)
43240
da47097bd589 adding finitize_functions and processing of equivalences in existential compilation in quickcheck_narrowing
bulwahn
parents: 43237
diff changeset
   451
          (Counterexample.get, Counterexample.put, "Narrowing_Generators.put_counterexample")
43379
8c4b383e5143 quickcheck_narrowing returns some timing information
bulwahn
parents: 43329
diff changeset
   452
          thy (apfst o Option.map o map) (ensure_testable (finitize t'))
43240
da47097bd589 adding finitize_functions and processing of equivalences in existential compilation in quickcheck_narrowing
bulwahn
parents: 43237
diff changeset
   453
      in
43585
ea959ab7bbe3 adding timeout to quickcheck narrowing
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parents: 43379
diff changeset
   454
        Quickcheck.Result
45039
632a033616e9 adding post-processing of terms to narrowing-based Quickcheck
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parents: 45002
diff changeset
   455
         {counterexample =
632a033616e9 adding post-processing of terms to narrowing-based Quickcheck
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parents: 45002
diff changeset
   456
           Option.map (((curry (op ~~)) (Term.add_free_names t [])) o map post_process) counterexample,
43585
ea959ab7bbe3 adding timeout to quickcheck narrowing
bulwahn
parents: 43379
diff changeset
   457
          evaluation_terms = Option.map (K []) counterexample,
ea959ab7bbe3 adding timeout to quickcheck narrowing
bulwahn
parents: 43379
diff changeset
   458
          timings = #timings (dest_result result), reports = #reports (dest_result result)}
43240
da47097bd589 adding finitize_functions and processing of equivalences in existential compilation in quickcheck_narrowing
bulwahn
parents: 43237
diff changeset
   459
      end
41905
e2611bc96022 adding files for prototype of lazysmallcheck
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parents:
diff changeset
   460
  end;
e2611bc96022 adding files for prototype of lazysmallcheck
bulwahn
parents:
diff changeset
   461
43114
b9fca691addd Quickcheck Narrowing only requires one compilation with GHC now
bulwahn
parents: 43079
diff changeset
   462
fun test_goals ctxt (limit_time, is_interactive) insts goals =
43314
a9090cabca14 adding a nicer error message for quickcheck_narrowing; hiding fact empty_def
bulwahn
parents: 43308
diff changeset
   463
  if (not (getenv "ISABELLE_GHC" = "")) then
a9090cabca14 adding a nicer error message for quickcheck_narrowing; hiding fact empty_def
bulwahn
parents: 43308
diff changeset
   464
    let
45159
3f1d1ce024cb moving some common functions from quickcheck to the more HOL-specific quickcheck_common; renamed inductive_SML's configurations to more canonical names; adds automatically left and right hand sides of equations as evaluation terms
bulwahn
parents: 45039
diff changeset
   465
      val correct_inst_goals = Quickcheck_Common.instantiate_goals ctxt insts goals
43314
a9090cabca14 adding a nicer error message for quickcheck_narrowing; hiding fact empty_def
bulwahn
parents: 43308
diff changeset
   466
    in
45159
3f1d1ce024cb moving some common functions from quickcheck to the more HOL-specific quickcheck_common; renamed inductive_SML's configurations to more canonical names; adds automatically left and right hand sides of equations as evaluation terms
bulwahn
parents: 45039
diff changeset
   467
      Quickcheck_Common.collect_results (test_term ctxt (limit_time, is_interactive)) (maps (map snd) correct_inst_goals) []
43314
a9090cabca14 adding a nicer error message for quickcheck_narrowing; hiding fact empty_def
bulwahn
parents: 43308
diff changeset
   468
    end
a9090cabca14 adding a nicer error message for quickcheck_narrowing; hiding fact empty_def
bulwahn
parents: 43308
diff changeset
   469
  else
a9090cabca14 adding a nicer error message for quickcheck_narrowing; hiding fact empty_def
bulwahn
parents: 43308
diff changeset
   470
    (if Config.get ctxt Quickcheck.quiet then () else Output.urgent_message
a9090cabca14 adding a nicer error message for quickcheck_narrowing; hiding fact empty_def
bulwahn
parents: 43308
diff changeset
   471
      ("Environment variable ISABELLE_GHC is not set. To use narrowing-based quickcheck, please set "
43911
a1da544e2652 more information for the user how to deactivate quickcheck_narrowing if he does not want to use it
bulwahn
parents: 43910
diff changeset
   472
        ^ "this variable to your GHC Haskell compiler in your settings file. "
a1da544e2652 more information for the user how to deactivate quickcheck_narrowing if he does not want to use it
bulwahn
parents: 43910
diff changeset
   473
        ^ "To deactivate narrowing-based quickcheck, set quickcheck_narrowing_active to false.");
a1da544e2652 more information for the user how to deactivate quickcheck_narrowing if he does not want to use it
bulwahn
parents: 43910
diff changeset
   474
      [Quickcheck.empty_result])
43114
b9fca691addd Quickcheck Narrowing only requires one compilation with GHC now
bulwahn
parents: 43079
diff changeset
   475
43047
26774ccb1c74 automatic derivation of partial_term_of functions; renaming type and term to longer names narrowing_type and narrowing_term; hiding constant C; adding overlord option
bulwahn
parents: 42616
diff changeset
   476
(* setup *)
41905
e2611bc96022 adding files for prototype of lazysmallcheck
bulwahn
parents:
diff changeset
   477
44272
360fcbb1aa01 activating narrowing-based quickcheck by default
bulwahn
parents: 44241
diff changeset
   478
val active = Attrib.setup_config_bool @{binding quickcheck_narrowing_active} (K true);
43878
eeb10fdd9535 changed every tester to have a configuration in quickcheck; enabling parallel testing of different testers in quickcheck
bulwahn
parents: 43850
diff changeset
   479
41905
e2611bc96022 adding files for prototype of lazysmallcheck
bulwahn
parents:
diff changeset
   480
val setup =
43047
26774ccb1c74 automatic derivation of partial_term_of functions; renaming type and term to longer names narrowing_type and narrowing_term; hiding constant C; adding overlord option
bulwahn
parents: 42616
diff changeset
   481
  Code.datatype_interpretation ensure_partial_term_of
26774ccb1c74 automatic derivation of partial_term_of functions; renaming type and term to longer names narrowing_type and narrowing_term; hiding constant C; adding overlord option
bulwahn
parents: 42616
diff changeset
   482
  #> Code.datatype_interpretation ensure_partial_term_of_code
26774ccb1c74 automatic derivation of partial_term_of functions; renaming type and term to longer names narrowing_type and narrowing_term; hiding constant C; adding overlord option
bulwahn
parents: 42616
diff changeset
   483
  #> Datatype.interpretation (Quickcheck_Common.ensure_sort_datatype
42258
79cb339d8989 changing ensure_sort_datatype call in narrowing quickcheck (missed in 1491b7209e76)
bulwahn
parents: 42214
diff changeset
   484
    (((@{sort typerep}, @{sort term_of}), @{sort narrowing}), instantiate_narrowing_datatype))
43878
eeb10fdd9535 changed every tester to have a configuration in quickcheck; enabling parallel testing of different testers in quickcheck
bulwahn
parents: 43850
diff changeset
   485
  #> Context.theory_map (Quickcheck.add_tester ("narrowing", (active, test_goals)))
41905
e2611bc96022 adding files for prototype of lazysmallcheck
bulwahn
parents:
diff changeset
   486
    
44272
360fcbb1aa01 activating narrowing-based quickcheck by default
bulwahn
parents: 44241
diff changeset
   487
end;