src/Tools/quickcheck.ML
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(*  Title:      Tools/quickcheck.ML
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    Author:     Stefan Berghofer, Florian Haftmann, Lukas Bulwahn, TU Muenchen
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Generic counterexample search engine.
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*)
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signature QUICKCHECK =
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sig
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  val quickcheckN: string
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  val genuineN: string
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  val noneN: string
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  val unknownN: string
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  val setup: theory -> theory
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  (* configuration *)
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  val auto: bool Unsynchronized.ref
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  val batch_tester : string Config.T
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  val size : int Config.T
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  val iterations : int Config.T
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  val depth : int Config.T
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  val no_assms : bool Config.T
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  val report : bool Config.T
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  val timeout : real Config.T
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  val timing : bool Config.T
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  val genuine_only : bool Config.T
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  val abort_potential : bool Config.T  
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  val quiet : bool Config.T
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  val verbose : bool Config.T
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  val use_subtype : bool Config.T
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  val allow_function_inversion : bool Config.T
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  val finite_types : bool Config.T
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  val finite_type_size : int Config.T
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  val tag : string Config.T
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  val locale : string Config.T
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  val set_active_testers: string list -> Context.generic -> Context.generic
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  datatype expectation = No_Expectation | No_Counterexample | Counterexample;
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  datatype test_params = Test_Params of {default_type: typ list, expect : expectation};
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  val test_params_of : Proof.context -> test_params
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  val map_test_params : (typ list * expectation -> typ list * expectation)
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    -> Context.generic -> Context.generic
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  val default_type : Proof.context -> typ list
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  datatype report = Report of
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    { iterations : int, raised_match_errors : int,
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      satisfied_assms : int list, positive_concl_tests : int }
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  (* quickcheck's result *)
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  datatype result =
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    Result of
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     {counterexample : (bool * (string * term) list) option,
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      evaluation_terms : (term * term) list option,
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      timings : (string * int) list,
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      reports : (int * report) list}
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  val empty_result : result
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  val found_counterexample : result -> bool
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  val add_timing : (string * int) -> result Unsynchronized.ref -> unit
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  val add_response : string list -> term list -> (bool * term list) option -> result Unsynchronized.ref -> unit
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  val add_report : int -> report option -> result Unsynchronized.ref -> unit
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  val counterexample_of : result -> (bool * (string * term) list) option
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  val timings_of : result -> (string * int) list
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  (* registering testers & generators *) 
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  type tester =
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    Proof.context -> bool -> (string * typ) list -> (term * term list) list -> result list
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  val add_tester : string * (bool Config.T * tester) -> Context.generic -> Context.generic
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  val add_batch_generator :
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    string * (Proof.context -> term list -> (int -> term list option) list)
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      -> Context.generic -> Context.generic
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  val add_batch_validator :
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    string * (Proof.context -> term list -> (int -> bool) list)
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      -> Context.generic -> Context.generic
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  (* basic operations *)
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  val message : Proof.context -> string -> unit
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  val verbose_message : Proof.context -> string -> unit
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  val limit : Time.time -> (bool * bool) -> (unit -> 'a) -> (unit -> 'a) -> unit -> 'a
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  val pretty_counterex : Proof.context -> bool ->
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    ((bool * (string * term) list) * (term * term) list) option -> Pretty.T
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  (* testing terms and proof states *)
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  val mk_batch_validator : Proof.context -> term list -> (int -> bool) list option
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  val mk_batch_tester : Proof.context -> term list -> (int -> term list option) list option
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  val active_testers : Proof.context -> tester list
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  val test_terms :
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    Proof.context -> bool * bool -> (string * typ) list -> (term * term list) list -> result list option
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  val quickcheck: (string * string list) list -> int -> Proof.state -> (bool * (string * term) list) option
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end;
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structure Quickcheck : QUICKCHECK =
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struct
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val quickcheckN = "quickcheck"
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val genuineN = "genuine"
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val noneN = "none"
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val unknownN = "unknown"
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(* preferences *)
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val auto = Unsynchronized.ref false;
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val _ =
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  ProofGeneralPgip.add_preference Preferences.category_tracing
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  (Unsynchronized.setmp auto true (fn () =>
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    Preferences.bool_pref auto
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      "auto-quickcheck"
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      "Run Quickcheck automatically.") ());
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(* quickcheck report *)
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datatype report = Report of
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  { iterations : int, raised_match_errors : int,
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    satisfied_assms : int list, positive_concl_tests : int }
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(* Quickcheck Result *)
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datatype result = Result of
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  { counterexample : (bool * (string * term) list) option, evaluation_terms : (term * term) list option,
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    timings : (string * int) list, reports : (int * report) list}
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val empty_result =
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  Result {counterexample = NONE, evaluation_terms = NONE, timings = [], reports = []}
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fun counterexample_of (Result r) = #counterexample r
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fun found_counterexample (Result r) = is_some (#counterexample r)
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fun response_of (Result r) = case (#counterexample r, #evaluation_terms r) of
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    (SOME ts, SOME evals) => SOME (ts, evals)
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  | (NONE, NONE) => NONE
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fun timings_of (Result r) = #timings r
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fun set_response names eval_terms (SOME (genuine, ts)) (Result r) =
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  let
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    val (ts1, ts2) = chop (length names) ts
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    val (eval_terms', _) = chop (length ts2) eval_terms
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  in
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    Result {counterexample = SOME (genuine, (names ~~ ts1)),
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      evaluation_terms = SOME (eval_terms' ~~ ts2),
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      timings = #timings r, reports = #reports r}
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  end
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  | set_response _ _ NONE result = result
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fun cons_timing timing (Result r) =
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  Result {counterexample = #counterexample r, evaluation_terms = #evaluation_terms r,
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    timings = cons timing (#timings r), reports = #reports r}
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fun cons_report size (SOME report) (Result r) =
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  Result {counterexample = #counterexample r, evaluation_terms = #evaluation_terms r,
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    timings = #timings r, reports = cons (size, report) (#reports r)}
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  | cons_report _ NONE result = result
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fun add_timing timing result_ref =
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  Unsynchronized.change result_ref (cons_timing timing)
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fun add_report size report result_ref =
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  Unsynchronized.change result_ref (cons_report size report)
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fun add_response names eval_terms response result_ref =
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  Unsynchronized.change result_ref (set_response names eval_terms response)
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(* expectation *)
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datatype expectation = No_Expectation | No_Counterexample | Counterexample;
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fun merge_expectation (expect1, expect2) =
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  if expect1 = expect2 then expect1 else No_Expectation
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(* quickcheck configuration -- default parameters, test generators *)
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val batch_tester = Attrib.setup_config_string @{binding quickcheck_batch_tester} (K "")
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val size = Attrib.setup_config_int @{binding quickcheck_size} (K 10)
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val iterations = Attrib.setup_config_int @{binding quickcheck_iterations} (K 100)
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val depth = Attrib.setup_config_int @{binding quickcheck_depth} (K 10)
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val no_assms = Attrib.setup_config_bool @{binding quickcheck_no_assms} (K false)
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val locale = Attrib.setup_config_string @{binding quickcheck_locale} (K "interpret expand")
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val report = Attrib.setup_config_bool @{binding quickcheck_report} (K true)
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val timing = Attrib.setup_config_bool @{binding quickcheck_timing} (K false)
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val timeout = Attrib.setup_config_real @{binding quickcheck_timeout} (K 30.0)
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val genuine_only = Attrib.setup_config_bool @{binding quickcheck_genuine_only} (K false)
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val abort_potential = Attrib.setup_config_bool @{binding quickcheck_abort_potential} (K false)
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val quiet = Attrib.setup_config_bool @{binding quickcheck_quiet} (K false)
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val verbose = Attrib.setup_config_bool @{binding quickcheck_verbose} (K false)
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val tag = Attrib.setup_config_string @{binding quickcheck_tag} (K "")
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val use_subtype = Attrib.setup_config_bool @{binding quickcheck_use_subtype} (K false)
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val allow_function_inversion =
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  Attrib.setup_config_bool @{binding quickcheck_allow_function_inversion} (K false)
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val finite_types = Attrib.setup_config_bool @{binding quickcheck_finite_types} (K true)
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val finite_type_size = Attrib.setup_config_int @{binding quickcheck_finite_type_size} (K 3)
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datatype test_params = Test_Params of
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  {default_type: typ list, expect : expectation};
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fun dest_test_params (Test_Params {default_type, expect}) = (default_type, expect);
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fun make_test_params (default_type, expect) =
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  Test_Params {default_type = default_type, expect = expect};
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fun map_test_params' f (Test_Params {default_type, expect}) =
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  make_test_params (f (default_type, expect));
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fun merge_test_params
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  (Test_Params {default_type = default_type1, expect = expect1},
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    Test_Params {default_type = default_type2, expect = expect2}) =
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  make_test_params
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    (merge (op =) (default_type1, default_type2), merge_expectation (expect1, expect2));
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type tester =
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  Proof.context -> bool -> (string * typ) list -> (term * term list) list -> result list
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structure Data = Generic_Data
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(
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  type T =
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    ((string * (bool Config.T * tester)) list
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      * ((string * (Proof.context -> term list -> (int -> term list option) list)) list
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      * ((string * (Proof.context -> term list -> (int -> bool) list)) list)))
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      * test_params;
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  val empty = (([], ([], [])), Test_Params {default_type = [], expect = No_Expectation});
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  val extend = I;
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  fun merge (((testers1, (batch_generators1, batch_validators1)), params1),
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    ((testers2, (batch_generators2, batch_validators2)), params2)) : T =
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    ((AList.merge (op =) (K true) (testers1, testers2),
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      (AList.merge (op =) (K true) (batch_generators1, batch_generators2),
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       AList.merge (op =) (K true) (batch_validators1, batch_validators2))),
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      merge_test_params (params1, params2));
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);
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val test_params_of = snd o Data.get o Context.Proof;
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val default_type = fst o dest_test_params o test_params_of
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val expect = snd o dest_test_params o test_params_of
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val map_test_params = Data.map o apsnd o map_test_params'
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val add_tester = Data.map o apfst o apfst o AList.update (op =);
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val add_batch_generator = Data.map o apfst o apsnd o apfst o AList.update (op =);
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val add_batch_validator = Data.map o apfst o apsnd o apsnd o AList.update (op =);
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fun active_testers ctxt =
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  let
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    val testers = (map snd o fst o fst o Data.get o Context.Proof) ctxt
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  in
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    map snd (filter (fn (active, _) => Config.get ctxt active) testers)
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  end
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fun set_active_testers [] gen_ctxt = gen_ctxt
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  | set_active_testers testers gen_ctxt =
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  let
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    val registered_testers = (fst o fst o Data.get) gen_ctxt
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  in
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    fold (fn (name, (config, _)) => Config.put_generic config (member (op =) testers name))
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      registered_testers gen_ctxt
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  end
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(* generating tests *)
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fun gen_mk_tester lookup ctxt v =
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  let
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    val name = Config.get ctxt batch_tester
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    val tester = case lookup ctxt name
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      of NONE => error ("No such quickcheck batch-tester: " ^ name)
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      | SOME tester => tester ctxt;
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  in
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    if Config.get ctxt quiet then
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      try tester v
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    else
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      let (* FIXME !?!? *)
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        val tester = Exn.interruptible_capture tester v
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      in case Exn.get_res tester of
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          NONE => SOME (Exn.release tester)
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        | SOME tester => SOME tester
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      end
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  end
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val mk_batch_tester =
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  gen_mk_tester (fn ctxt => AList.lookup (op =) ((fst o snd o fst o Data.get o Context.Proof) ctxt))
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val mk_batch_validator =
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  gen_mk_tester (fn ctxt => AList.lookup (op =) ((snd o snd o fst o Data.get o Context.Proof) ctxt))
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(* testing propositions *)
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type compile_generator =
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  Proof.context -> (term * term list) list -> int list -> term list option * report option
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fun limit timeout (limit_time, is_interactive) f exc () =
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  if limit_time then
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      TimeLimit.timeLimit timeout f ()
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    handle TimeLimit.TimeOut =>
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      if is_interactive then exc () else raise TimeLimit.TimeOut
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  else
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    f ()
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fun message ctxt s = if Config.get ctxt quiet then () else Output.urgent_message s
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fun verbose_message ctxt s = if not (Config.get ctxt quiet) andalso Config.get ctxt verbose
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  then Output.urgent_message s else ()
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fun test_terms ctxt (limit_time, is_interactive) insts goals =
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  case active_testers ctxt of
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    [] => error "No active testers for quickcheck"
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  | testers =>
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    limit (seconds (Config.get ctxt timeout)) (limit_time, is_interactive)
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      (fn () => Par_List.get_some (fn tester =>
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      tester ctxt (length testers > 1) insts goals |>
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      (fn result => if exists found_counterexample result then SOME result else NONE)) testers)
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      (fn () => (message ctxt "Quickcheck ran out of time"; NONE)) ();
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fun all_axioms_of ctxt t =
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  let
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    val intros = Locale.get_intros ctxt
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    val unfolds = Locale.get_unfolds ctxt
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    fun retrieve_prems thms t = 
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       case filter (fn th => Term.could_unify (Thm.concl_of th, t)) thms of
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         [] => NONE 
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       | [th] =>
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         let
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           val (tyenv, tenv) =
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             Pattern.match (Proof_Context.theory_of ctxt) (Thm.concl_of th, t) (Vartab.empty, Vartab.empty)
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         in SOME (map (Envir.subst_term (tyenv, tenv)) (Thm.prems_of th)) end
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    fun all t =
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      case retrieve_prems intros t of
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        NONE => retrieve_prems unfolds t
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      | SOME ts => SOME (maps (fn t => the_default [t] (all t)) ts)
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  in
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    all t
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  end
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fun locale_config_of s =
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  let
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    val cs = space_explode " " s
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  in
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    if forall (fn c => c = "expand" orelse c = "interpret") cs then cs
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    else (warning ("Invalid quickcheck_locale setting: falling back to the default setting.");
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      ["interpret", "expand"])
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  end
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fun test_goal (time_limit, is_interactive) (insts, eval_terms) i state =
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  let
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    val lthy = Proof.context_of state;
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    val thy = Proof.theory_of state;
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    val _ = message lthy "Quickchecking..."
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    fun strip (Const ("all", _) $ Abs (_, _, t)) = strip t
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      | strip t = t;
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    val {goal = st, ...} = Proof.raw_goal state;
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    val (gi, frees) = Logic.goal_params (prop_of st) i;
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    val some_locale = case (Option.map #target o Named_Target.peek) lthy
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     of NONE => NONE
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      | SOME "" => NONE
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      | SOME locale => SOME locale;
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    val assms = if Config.get lthy no_assms then [] else case some_locale
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     of NONE => Assumption.all_assms_of lthy
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      | SOME locale => Assumption.local_assms_of lthy (Locale.init locale thy);
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    val proto_goal = Logic.list_implies (map Thm.term_of assms, subst_bounds (frees, strip gi));
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    fun axioms_of locale = case fst (Locale.specification_of thy locale) of
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        NONE => []
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      | SOME t => the_default [] (all_axioms_of lthy t)
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   val config = locale_config_of (Config.get lthy locale) 
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   val goals = case some_locale
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     of NONE => [(proto_goal, eval_terms)]
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      | SOME locale => fold (fn c =>
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          if c = "expand" then cons (Logic.list_implies (axioms_of locale, proto_goal), eval_terms) else
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          if c = "interpret" then
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            append (map (fn (_, phi) => (Morphism.term phi proto_goal, map (Morphism.term phi) eval_terms))
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          (Locale.registrations_of (Context.Theory thy) (*FIXME*) locale)) else I) config [];
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    val _ = verbose_message lthy (Pretty.string_of
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      (Pretty.big_list ("Checking goals: ") (map (Syntax.pretty_term lthy o fst) goals)))
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  in
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    test_terms lthy (time_limit, is_interactive) insts goals
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  end
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(* pretty printing *)
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fun tool_name auto = (if auto then "Auto " else "") ^ "Quickcheck"
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fun pretty_counterex ctxt auto NONE =
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    Pretty.str (tool_name auto ^ " found no counterexample." ^ Config.get ctxt tag)
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  | pretty_counterex ctxt auto (SOME ((genuine, cex), eval_terms)) =
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      Pretty.chunks ((Pretty.str (tool_name auto ^ " found a " ^
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        (if genuine then "counterexample:"
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          else "potentially spurious counterexample due to underspecified functions:")
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          ^ Config.get ctxt tag ^ "\n") ::
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        map (fn (s, t) =>
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          Pretty.block [Pretty.str (s ^ " ="), Pretty.brk 1, Syntax.pretty_term ctxt t]) (rev cex))
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        @ (if null eval_terms then []
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           else (Pretty.fbrk :: Pretty.str ("Evaluated terms:") ::
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             map (fn (t, u) =>
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               Pretty.block [Syntax.pretty_term ctxt t, Pretty.str " =", Pretty.brk 1,
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                 Syntax.pretty_term ctxt u]) (rev eval_terms))));
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(* Isar commands *)
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fun read_nat s = case (Library.read_int o Symbol.explode) s
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 of (k, []) => if k >= 0 then k
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      else error ("Not a natural number: " ^ s)
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  | (_, _ :: _) => error ("Not a natural number: " ^ s);
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diff changeset
   400
fun read_bool "false" = false
8650a073dd9b made Quickcheck take structured proof assumptions into account (like Refute and Nitpick) by default;
blanchet
parents: 33583
diff changeset
   401
  | read_bool "true" = true
8650a073dd9b made Quickcheck take structured proof assumptions into account (like Refute and Nitpick) by default;
blanchet
parents: 33583
diff changeset
   402
  | read_bool s = error ("Not a Boolean value: " ^ s)
28315
d3cf88fe77bc generic quickcheck framework
haftmann
parents: 28309
diff changeset
   403
40366
a2866dbfbe6b changing timeout to real value; handling Interrupt and Timeout more like nitpick does
bulwahn
parents: 40253
diff changeset
   404
fun read_real s =
a2866dbfbe6b changing timeout to real value; handling Interrupt and Timeout more like nitpick does
bulwahn
parents: 40253
diff changeset
   405
  case (Real.fromString s) of
a2866dbfbe6b changing timeout to real value; handling Interrupt and Timeout more like nitpick does
bulwahn
parents: 40253
diff changeset
   406
    SOME s => s
a2866dbfbe6b changing timeout to real value; handling Interrupt and Timeout more like nitpick does
bulwahn
parents: 40253
diff changeset
   407
  | NONE => error ("Not a real number: " ^ s)
a2866dbfbe6b changing timeout to real value; handling Interrupt and Timeout more like nitpick does
bulwahn
parents: 40253
diff changeset
   408
37929
22e0797857e6 adding checking of expected result for the tool quickcheck; annotated a few quickcheck examples
bulwahn
parents: 37913
diff changeset
   409
fun read_expectation "no_expectation" = No_Expectation
41517
7267fb5b724b observe line length limit;
wenzelm
parents: 41472
diff changeset
   410
  | read_expectation "no_counterexample" = No_Counterexample
37929
22e0797857e6 adding checking of expected result for the tool quickcheck; annotated a few quickcheck examples
bulwahn
parents: 37913
diff changeset
   411
  | read_expectation "counterexample" = Counterexample
41517
7267fb5b724b observe line length limit;
wenzelm
parents: 41472
diff changeset
   412
  | read_expectation s = error ("Not an expectation value: " ^ s)
37929
22e0797857e6 adding checking of expected result for the tool quickcheck; annotated a few quickcheck examples
bulwahn
parents: 37913
diff changeset
   413
43877
abd1f074cb98 removing generator registration
bulwahn
parents: 43876
diff changeset
   414
fun valid_tester_name genctxt name = AList.defined (op =) (fst (fst (Data.get genctxt))) name
abd1f074cb98 removing generator registration
bulwahn
parents: 43876
diff changeset
   415
  
43881
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   416
fun parse_tester name (testers, genctxt) =
40912
1108529100ce checking if parameter is name of a tester which allows e.g. quickcheck[random]
bulwahn
parents: 40911
diff changeset
   417
  if valid_tester_name genctxt name then
43881
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   418
    (insert (op =) name testers, genctxt)  
40912
1108529100ce checking if parameter is name of a tester which allows e.g. quickcheck[random]
bulwahn
parents: 40911
diff changeset
   419
  else
1108529100ce checking if parameter is name of a tester which allows e.g. quickcheck[random]
bulwahn
parents: 40911
diff changeset
   420
    error ("Unknown tester: " ^ name)
1108529100ce checking if parameter is name of a tester which allows e.g. quickcheck[random]
bulwahn
parents: 40911
diff changeset
   421
43881
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   422
fun parse_test_param ("tester", args) = fold parse_tester args
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   423
  | parse_test_param ("size", [arg]) = apsnd (Config.put_generic size (read_nat arg))
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   424
  | parse_test_param ("iterations", [arg]) = apsnd (Config.put_generic iterations (read_nat arg))
45213
92e03ea2b5cf adding depth as an quickcheck configuration
bulwahn
parents: 45159
diff changeset
   425
  | parse_test_param ("depth", [arg]) = apsnd (Config.put_generic depth (read_nat arg))  
43881
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   426
  | parse_test_param ("default_type", arg) = (fn (testers, gen_ctxt) =>
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   427
    (testers, map_test_params
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   428
      ((apfst o K) (map (Proof_Context.read_typ (Context.proof_of gen_ctxt)) arg)) gen_ctxt))
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   429
  | parse_test_param ("no_assms", [arg]) = apsnd (Config.put_generic no_assms (read_bool arg))
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   430
  | parse_test_param ("expect", [arg]) = apsnd (map_test_params ((apsnd o K) (read_expectation arg)))
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   431
  | parse_test_param ("report", [arg]) = apsnd (Config.put_generic report (read_bool arg))
45757
e32dd098f57a renaming potential flag to genuine_only flag with an inverse semantics
bulwahn
parents: 45755
diff changeset
   432
  | parse_test_param ("genuine_only", [arg]) = apsnd (Config.put_generic genuine_only (read_bool arg))
46477
db693eb03a3f adding abort_potential configuration in Quickcheck
bulwahn
parents: 46343
diff changeset
   433
  | parse_test_param ("abort_potential", [arg]) = apsnd (Config.put_generic abort_potential (read_bool arg))
43881
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   434
  | parse_test_param ("quiet", [arg]) = apsnd (Config.put_generic quiet (read_bool arg))
45764
1672be34581a adding verbose configuration to quickcheck
bulwahn
parents: 45757
diff changeset
   435
  | parse_test_param ("verbose", [arg]) = apsnd (Config.put_generic verbose (read_bool arg))
46863
56376f6be74f adding tags to quickcheck's result
bulwahn
parents: 46759
diff changeset
   436
  | parse_test_param ("tag", [arg]) = apsnd (Config.put_generic tag arg)
46565
ad21900e0ee9 subtype preprocessing in Quickcheck;
bulwahn
parents: 46477
diff changeset
   437
  | parse_test_param ("use_subtype", [arg]) = apsnd (Config.put_generic use_subtype (read_bool arg))  
43881
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   438
  | parse_test_param ("timeout", [arg]) = apsnd (Config.put_generic timeout (read_real arg))
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   439
  | parse_test_param ("finite_types", [arg]) = apsnd (Config.put_generic finite_types (read_bool arg))
45449
eeffd04cd899 adding option allow_function_inversion to quickcheck options
bulwahn
parents: 45419
diff changeset
   440
  | parse_test_param ("allow_function_inversion", [arg]) =
eeffd04cd899 adding option allow_function_inversion to quickcheck options
bulwahn
parents: 45419
diff changeset
   441
      apsnd (Config.put_generic allow_function_inversion (read_bool arg))
41517
7267fb5b724b observe line length limit;
wenzelm
parents: 41472
diff changeset
   442
  | parse_test_param ("finite_type_size", [arg]) =
43881
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   443
    apsnd (Config.put_generic finite_type_size (read_nat arg))
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   444
  | parse_test_param (name, _) = (fn (testers, genctxt) =>
40912
1108529100ce checking if parameter is name of a tester which allows e.g. quickcheck[random]
bulwahn
parents: 40911
diff changeset
   445
    if valid_tester_name genctxt name then
43881
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   446
      (insert (op =) name testers, genctxt)  
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   447
    else error ("Unknown tester or test parameter: " ^ name));
28315
d3cf88fe77bc generic quickcheck framework
haftmann
parents: 28309
diff changeset
   448
43881
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   449
fun proof_map_result f = apsnd Context.the_proof o f o Context.Proof;
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   450
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   451
fun parse_test_param_inst (name, arg) ((insts, eval_terms), (testers, ctxt)) =
42361
23f352990944 modernized structure Proof_Context;
wenzelm
parents: 42275
diff changeset
   452
      case try (Proof_Context.read_typ ctxt) name
42025
cb5b1e85b32e adding eval option to quickcheck
bulwahn
parents: 41862
diff changeset
   453
       of SOME (TFree (v, _)) =>
43881
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   454
         ((AList.update (op =) (v, Proof_Context.read_typ ctxt (the_single arg)) insts, eval_terms),
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   455
           (testers, ctxt))
42025
cb5b1e85b32e adding eval option to quickcheck
bulwahn
parents: 41862
diff changeset
   456
        | NONE => (case name of
43881
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   457
            "eval" => ((insts, eval_terms @ map (Syntax.read_term ctxt) arg), (testers, ctxt))
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   458
          | _ => ((insts, eval_terms),
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   459
            proof_map_result (fn gen_ctxt => parse_test_param (name, arg) (testers, gen_ctxt)) ctxt));
28309
c24bc53c815c some steps towards generic quickcheck framework
haftmann
parents: 28256
diff changeset
   460
43881
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   461
fun quickcheck_params_cmd args = Context.theory_map
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   462
  (fn gen_ctxt => uncurry set_active_testers (fold parse_test_param args ([], gen_ctxt)));
41517
7267fb5b724b observe line length limit;
wenzelm
parents: 41472
diff changeset
   463
42088
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   464
fun check_expectation state results =
43879
c8308a8faf9f enabling parallel execution of testers but removing more informative quickcheck output
bulwahn
parents: 43878
diff changeset
   465
  (if is_some results andalso expect (Proof.context_of state) = No_Counterexample
42088
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   466
  then
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   467
    error ("quickcheck expected to find no counterexample but found one")
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   468
  else
43879
c8308a8faf9f enabling parallel execution of testers but removing more informative quickcheck output
bulwahn
parents: 43878
diff changeset
   469
    (if is_none results andalso expect (Proof.context_of state) = Counterexample
42088
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   470
    then
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   471
      error ("quickcheck expected to find a counterexample but did not find one")
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   472
    else ()))
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   473
35378
95d0e3adf38e added basic reporting of test cases to quickcheck
bulwahn
parents: 35324
diff changeset
   474
fun gen_quickcheck args i state =
40644
0850a2a16dce changed old-style quickcheck configurations to new Config.T configurations
bulwahn
parents: 40643
diff changeset
   475
  state
43881
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   476
  |> Proof.map_context_result (fn ctxt =>
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   477
    apsnd (fn (testers, ctxt) => Context.proof_map (set_active_testers testers) ctxt)
cabe74eab19a changing parser in quickcheck to activate and deactivate the testers
bulwahn
parents: 43879
diff changeset
   478
      (fold parse_test_param_inst args (([], []), ([], ctxt))))
42026
da9b58f1db42 adding option of evaluating terms after invocation in quickcheck
bulwahn
parents: 42025
diff changeset
   479
  |> (fn ((insts, eval_terms), state') => test_goal (true, true) (insts, eval_terms) i state'
46863
56376f6be74f adding tags to quickcheck's result
bulwahn
parents: 46759
diff changeset
   480
  |> tap (check_expectation state') |> rpair state')
32297
3a4081abb3f7 Quickcheck callable from ML
boehmes
parents: 31599
diff changeset
   481
43879
c8308a8faf9f enabling parallel execution of testers but removing more informative quickcheck output
bulwahn
parents: 43878
diff changeset
   482
fun quickcheck args i state =
46863
56376f6be74f adding tags to quickcheck's result
bulwahn
parents: 46759
diff changeset
   483
  Option.map (the o get_first counterexample_of) (fst (gen_quickcheck args i state))
35378
95d0e3adf38e added basic reporting of test cases to quickcheck
bulwahn
parents: 35324
diff changeset
   484
32297
3a4081abb3f7 Quickcheck callable from ML
boehmes
parents: 31599
diff changeset
   485
fun quickcheck_cmd args i state =
35378
95d0e3adf38e added basic reporting of test cases to quickcheck
bulwahn
parents: 35324
diff changeset
   486
  gen_quickcheck args i (Toplevel.proof_of state)
46863
56376f6be74f adding tags to quickcheck's result
bulwahn
parents: 46759
diff changeset
   487
  |> apfst (Option.map (the o get_first response_of))
56376f6be74f adding tags to quickcheck's result
bulwahn
parents: 46759
diff changeset
   488
  |> (fn (r, state) => Output.urgent_message (Pretty.string_of
56376f6be74f adding tags to quickcheck's result
bulwahn
parents: 46759
diff changeset
   489
       (pretty_counterex (Proof.context_of state) false r)));
28309
c24bc53c815c some steps towards generic quickcheck framework
haftmann
parents: 28256
diff changeset
   490
41517
7267fb5b724b observe line length limit;
wenzelm
parents: 41472
diff changeset
   491
val parse_arg =
7267fb5b724b observe line length limit;
wenzelm
parents: 41472
diff changeset
   492
  Parse.name --
46949
94aa7b81bcf6 prefer formally checked @{keyword} parser;
wenzelm
parents: 46863
diff changeset
   493
    (Scan.optional (@{keyword "="} |--
41517
7267fb5b724b observe line length limit;
wenzelm
parents: 41472
diff changeset
   494
      (((Parse.name || Parse.float_number) >> single) ||
46949
94aa7b81bcf6 prefer formally checked @{keyword} parser;
wenzelm
parents: 46863
diff changeset
   495
        (@{keyword "["} |-- Parse.list1 Parse.name --| @{keyword "]"}))) ["true"]);
28309
c24bc53c815c some steps towards generic quickcheck framework
haftmann
parents: 28256
diff changeset
   496
41517
7267fb5b724b observe line length limit;
wenzelm
parents: 41472
diff changeset
   497
val parse_args =
46949
94aa7b81bcf6 prefer formally checked @{keyword} parser;
wenzelm
parents: 46863
diff changeset
   498
  @{keyword "["} |-- Parse.list1 parse_arg --| @{keyword "]"} || Scan.succeed [];
28336
a8edf4c69a79 fixed quickcheck parameter syntax
haftmann
parents: 28315
diff changeset
   499
36960
01594f816e3a prefer structure Keyword, Parse, Parse_Spec, Outer_Syntax;
wenzelm
parents: 36610
diff changeset
   500
val _ =
46961
5c6955f487e5 outer syntax command definitions based on formal command_spec derived from theory header declarations;
wenzelm
parents: 46949
diff changeset
   501
  Outer_Syntax.command @{command_spec "quickcheck_params"} "set parameters for random testing"
36960
01594f816e3a prefer structure Keyword, Parse, Parse_Spec, Outer_Syntax;
wenzelm
parents: 36610
diff changeset
   502
    (parse_args >> (fn args => Toplevel.theory (quickcheck_params_cmd args)));
28309
c24bc53c815c some steps towards generic quickcheck framework
haftmann
parents: 28256
diff changeset
   503
36960
01594f816e3a prefer structure Keyword, Parse, Parse_Spec, Outer_Syntax;
wenzelm
parents: 36610
diff changeset
   504
val _ =
46961
5c6955f487e5 outer syntax command definitions based on formal command_spec derived from theory header declarations;
wenzelm
parents: 46949
diff changeset
   505
  Outer_Syntax.improper_command @{command_spec "quickcheck"}
5c6955f487e5 outer syntax command definitions based on formal command_spec derived from theory header declarations;
wenzelm
parents: 46949
diff changeset
   506
    "try to find counterexample for subgoal"
36960
01594f816e3a prefer structure Keyword, Parse, Parse_Spec, Outer_Syntax;
wenzelm
parents: 36610
diff changeset
   507
    (parse_args -- Scan.optional Parse.nat 1
01594f816e3a prefer structure Keyword, Parse, Parse_Spec, Outer_Syntax;
wenzelm
parents: 36610
diff changeset
   508
      >> (fn (args, i) => Toplevel.no_timing o Toplevel.keep (quickcheck_cmd args i)));
28309
c24bc53c815c some steps towards generic quickcheck framework
haftmann
parents: 28256
diff changeset
   509
43020
abb5d1f907e4 added "try" command, to launch Solve Direct, Quickcheck, Nitpick, Sledgehammer, and Try Methods
blanchet
parents: 43018
diff changeset
   510
(* automatic testing *)
abb5d1f907e4 added "try" command, to launch Solve Direct, Quickcheck, Nitpick, Sledgehammer, and Try Methods
blanchet
parents: 43018
diff changeset
   511
abb5d1f907e4 added "try" command, to launch Solve Direct, Quickcheck, Nitpick, Sledgehammer, and Try Methods
blanchet
parents: 43018
diff changeset
   512
fun try_quickcheck auto state =
abb5d1f907e4 added "try" command, to launch Solve Direct, Quickcheck, Nitpick, Sledgehammer, and Try Methods
blanchet
parents: 43018
diff changeset
   513
  let
abb5d1f907e4 added "try" command, to launch Solve Direct, Quickcheck, Nitpick, Sledgehammer, and Try Methods
blanchet
parents: 43018
diff changeset
   514
    val ctxt = Proof.context_of state;
abb5d1f907e4 added "try" command, to launch Solve Direct, Quickcheck, Nitpick, Sledgehammer, and Try Methods
blanchet
parents: 43018
diff changeset
   515
    val i = 1;
abb5d1f907e4 added "try" command, to launch Solve Direct, Quickcheck, Nitpick, Sledgehammer, and Try Methods
blanchet
parents: 43018
diff changeset
   516
    val res =
abb5d1f907e4 added "try" command, to launch Solve Direct, Quickcheck, Nitpick, Sledgehammer, and Try Methods
blanchet
parents: 43018
diff changeset
   517
      state
abb5d1f907e4 added "try" command, to launch Solve Direct, Quickcheck, Nitpick, Sledgehammer, and Try Methods
blanchet
parents: 43018
diff changeset
   518
      |> Proof.map_context (Config.put report false #> Config.put quiet true)
abb5d1f907e4 added "try" command, to launch Solve Direct, Quickcheck, Nitpick, Sledgehammer, and Try Methods
blanchet
parents: 43018
diff changeset
   519
      |> try (test_goal (false, false) ([], []) i);
abb5d1f907e4 added "try" command, to launch Solve Direct, Quickcheck, Nitpick, Sledgehammer, and Try Methods
blanchet
parents: 43018
diff changeset
   520
  in
abb5d1f907e4 added "try" command, to launch Solve Direct, Quickcheck, Nitpick, Sledgehammer, and Try Methods
blanchet
parents: 43018
diff changeset
   521
    case res of
abb5d1f907e4 added "try" command, to launch Solve Direct, Quickcheck, Nitpick, Sledgehammer, and Try Methods
blanchet
parents: 43018
diff changeset
   522
      NONE => (unknownN, state)
abb5d1f907e4 added "try" command, to launch Solve Direct, Quickcheck, Nitpick, Sledgehammer, and Try Methods
blanchet
parents: 43018
diff changeset
   523
    | SOME results =>
abb5d1f907e4 added "try" command, to launch Solve Direct, Quickcheck, Nitpick, Sledgehammer, and Try Methods
blanchet
parents: 43018
diff changeset
   524
        let
43879
c8308a8faf9f enabling parallel execution of testers but removing more informative quickcheck output
bulwahn
parents: 43878
diff changeset
   525
          val msg = pretty_counterex ctxt auto (Option.map (the o get_first response_of) results)
43020
abb5d1f907e4 added "try" command, to launch Solve Direct, Quickcheck, Nitpick, Sledgehammer, and Try Methods
blanchet
parents: 43018
diff changeset
   526
        in
43879
c8308a8faf9f enabling parallel execution of testers but removing more informative quickcheck output
bulwahn
parents: 43878
diff changeset
   527
          if is_some results then
43020
abb5d1f907e4 added "try" command, to launch Solve Direct, Quickcheck, Nitpick, Sledgehammer, and Try Methods
blanchet
parents: 43018
diff changeset
   528
            (genuineN,
43029
3e060b1c844b use helpers and tweak Quickcheck's priority to it comes second (to give Solve Direct slightly more time before another prover runs)
blanchet
parents: 43024
diff changeset
   529
             state
3e060b1c844b use helpers and tweak Quickcheck's priority to it comes second (to give Solve Direct slightly more time before another prover runs)
blanchet
parents: 43024
diff changeset
   530
             |> (if auto then
3e060b1c844b use helpers and tweak Quickcheck's priority to it comes second (to give Solve Direct slightly more time before another prover runs)
blanchet
parents: 43024
diff changeset
   531
                   Proof.goal_message (K (Pretty.chunks [Pretty.str "",
50201
c26369c9eda6 Isabelle-specific implementation of quasi-abstract markup elements -- back to module arrangement before d83797ef0d2d;
wenzelm
parents: 49358
diff changeset
   532
                       Pretty.mark Markup.intensify msg]))
43029
3e060b1c844b use helpers and tweak Quickcheck's priority to it comes second (to give Solve Direct slightly more time before another prover runs)
blanchet
parents: 43024
diff changeset
   533
                 else
3e060b1c844b use helpers and tweak Quickcheck's priority to it comes second (to give Solve Direct slightly more time before another prover runs)
blanchet
parents: 43024
diff changeset
   534
                   tap (fn _ => Output.urgent_message (Pretty.string_of msg))))
43020
abb5d1f907e4 added "try" command, to launch Solve Direct, Quickcheck, Nitpick, Sledgehammer, and Try Methods
blanchet
parents: 43018
diff changeset
   535
          else
abb5d1f907e4 added "try" command, to launch Solve Direct, Quickcheck, Nitpick, Sledgehammer, and Try Methods
blanchet
parents: 43018
diff changeset
   536
            (noneN, state)
abb5d1f907e4 added "try" command, to launch Solve Direct, Quickcheck, Nitpick, Sledgehammer, and Try Methods
blanchet
parents: 43018
diff changeset
   537
        end
abb5d1f907e4 added "try" command, to launch Solve Direct, Quickcheck, Nitpick, Sledgehammer, and Try Methods
blanchet
parents: 43018
diff changeset
   538
  end
abb5d1f907e4 added "try" command, to launch Solve Direct, Quickcheck, Nitpick, Sledgehammer, and Try Methods
blanchet
parents: 43018
diff changeset
   539
  |> `(fn (outcome_code, _) => outcome_code = genuineN)
abb5d1f907e4 added "try" command, to launch Solve Direct, Quickcheck, Nitpick, Sledgehammer, and Try Methods
blanchet
parents: 43018
diff changeset
   540
43029
3e060b1c844b use helpers and tweak Quickcheck's priority to it comes second (to give Solve Direct slightly more time before another prover runs)
blanchet
parents: 43024
diff changeset
   541
val setup = Try.register_tool (quickcheckN, (20, auto, try_quickcheck))
43020
abb5d1f907e4 added "try" command, to launch Solve Direct, Quickcheck, Nitpick, Sledgehammer, and Try Methods
blanchet
parents: 43018
diff changeset
   542
28315
d3cf88fe77bc generic quickcheck framework
haftmann
parents: 28309
diff changeset
   543
end;
28309
c24bc53c815c some steps towards generic quickcheck framework
haftmann
parents: 28256
diff changeset
   544
28315
d3cf88fe77bc generic quickcheck framework
haftmann
parents: 28309
diff changeset
   545
val auto_quickcheck = Quickcheck.auto;