src/HOL/TPTP/mash_eval.ML

merge aliased theorems in MaSh dependencies, modulo symmetry of equality

(*  Title:      HOL/TPTP/mash_eval.ML
    Author:     Jasmin Blanchette, TU Muenchen
    Copyright   2012

Evaluate proof suggestions from MaSh (Machine-learning for Sledgehammer).
*)

signature MASH_EVAL =
sig
  type params = Sledgehammer_Provers.params

  val evaluate_mash_suggestions :
    Proof.context -> params -> string option -> string -> string -> unit
end;

structure MaSh_Eval : MASH_EVAL =
struct

open Sledgehammer_Fact
open Sledgehammer_MaSh

val MePoN = "MePo"
val MaShN = "MaSh"
val MeShN = "MeSh"
val IsarN = "Isar"

fun evaluate_mash_suggestions ctxt params prob_dir_name sugg_file_name
                              report_file_name =
  let
    val report_path = report_file_name |> Path.explode
    val _ = File.write report_path ""
    fun print s = (tracing s; File.append report_path (s ^ "\n"))
    val {provers, max_facts, slice, type_enc, lam_trans, timeout, ...} =
      Sledgehammer_Isar.default_params ctxt []
    val prover = hd provers
    val slack_max_facts = generous_max_facts (the max_facts)
    val sugg_path = sugg_file_name |> Path.explode
    val lines = sugg_path |> File.read_lines
    val css = Sledgehammer_Fact.clasimpset_rule_table_of ctxt
    val facts = all_facts ctxt true false Symtab.empty [] [] css
    val all_names = build_all_names nickname_of facts
    val mepo_ok = Unsynchronized.ref 0
    val mash_ok = Unsynchronized.ref 0
    val mesh_ok = Unsynchronized.ref 0
    val isar_ok = Unsynchronized.ref 0
    fun with_index facts s = (find_index (curry (op =) s) facts + 1, s)
    fun index_string (j, s) = s ^ "@" ^ string_of_int j
    fun str_of_res label facts ({outcome, run_time, used_facts, ...}
                                : Sledgehammer_Provers.prover_result) =
      let val facts = facts |> map (fn ((name, _), _) => name ()) in
        "  " ^ label ^ ": " ^
        (if is_none outcome then
           "Success (" ^ ATP_Util.string_from_time run_time ^ "): " ^
           (used_facts |> map (with_index facts o fst)
                       |> sort (int_ord o pairself fst)
                       |> map index_string
                       |> space_implode " ") ^
           (if length facts < the max_facts then
              " (of " ^ string_of_int (length facts) ^ ")"
            else
              "")
         else
           "Failure: " ^
           (facts |> take (the max_facts) |> tag_list 1
                  |> map index_string
                  |> space_implode " "))
      end
    fun solve_goal (j, line) =
      let
        val (name, suggs) = extract_query line
        val th =
          case find_first (fn (_, th) => nickname_of th = name) facts of
            SOME (_, th) => th
          | NONE => error ("No fact called \"" ^ name ^ "\".")
        val goal = goal_of_thm (Proof_Context.theory_of ctxt) th
        val (_, hyp_ts, concl_t) = ATP_Util.strip_subgoal ctxt goal 1
        val isar_deps = isar_dependencies_of all_names th |> these
        val facts = facts |> filter (fn (_, th') => thm_ord (th', th) = LESS)
        val mepo_facts =
          Sledgehammer_MePo.mepo_suggested_facts ctxt params prover
              slack_max_facts NONE hyp_ts concl_t facts
          |> Sledgehammer_MePo.weight_mepo_facts
        val (mash_facts, mash_unks) =
          find_mash_suggestions slack_max_facts suggs facts [] []
          |>> weight_mash_facts
        val mess = [(0.5, (mepo_facts, [])), (0.5, (mash_facts, mash_unks))]
        val mesh_facts = mesh_facts slack_max_facts mess
        val isar_facts = find_suggested_facts (map (rpair 1.0) isar_deps) facts
        (* adapted from "mirabelle_sledgehammer.ML" *)
        fun set_file_name heading (SOME dir) =
            let val prob_prefix = "goal_" ^ string_of_int j ^ "_" ^ heading in
              Config.put Sledgehammer_Provers.dest_dir dir
              #> Config.put Sledgehammer_Provers.problem_prefix
                            (prob_prefix ^ "__")
              #> Config.put SMT_Config.debug_files (dir ^ "/" ^ prob_prefix)
            end
          | set_file_name _ NONE = I
        fun prove ok heading get facts =
          let
            val facts =
              facts |> map get
                    |> Sledgehammer_Fact.maybe_instantiate_inducts ctxt hyp_ts
                                                                   concl_t
                    |> take (the max_facts)
            val ctxt = ctxt |> set_file_name heading prob_dir_name
            val res as {outcome, ...} =
              run_prover_for_mash ctxt params prover facts goal
            val _ = if is_none outcome then ok := !ok + 1 else ()
          in str_of_res heading facts res end
        val [mepo_s, mash_s, mesh_s, isar_s] =
          [fn () => prove mepo_ok MePoN fst mepo_facts,
           fn () => prove mash_ok MaShN fst mash_facts,
           fn () => prove mesh_ok MeShN I mesh_facts,
           fn () => prove isar_ok IsarN fst isar_facts]
          |> (* Par_List. *) map (fn f => f ())
      in
        ["Goal " ^ string_of_int j ^ ": " ^ name, mepo_s, mash_s, mesh_s,
         isar_s]
        |> cat_lines |> print
      end
    fun total_of heading ok n =
      "  " ^ heading ^ ": " ^ string_of_int (!ok) ^ " (" ^
      Real.fmt (StringCvt.FIX (SOME 1))
               (100.0 * Real.fromInt (!ok) / Real.fromInt n) ^ "%)"
    val inst_inducts = Config.get ctxt Sledgehammer_Fact.instantiate_inducts
    val options =
      [prover, string_of_int (the max_facts) ^ " facts",
       "slice" |> not slice ? prefix "dont_", the_default "smart" type_enc,
       the_default "smart" lam_trans, ATP_Util.string_from_time timeout,
       "instantiate_inducts" |> not inst_inducts ? prefix "dont_"]
    val n = length lines
  in
    print " * * *";
    print ("Options: " ^ commas options);
    Par_List.map solve_goal (tag_list 1 lines);
    ["Successes (of " ^ string_of_int n ^ " goals)",
     total_of MePoN mepo_ok n,
     total_of MaShN mash_ok n,
     total_of MeShN mesh_ok n,
     total_of IsarN isar_ok n]
    |> cat_lines |> print
  end

end;