controller_itp.ml 25.4 KB
Newer Older
1 2 3 4



open Format
Clément Fumex's avatar
Clément Fumex committed
5 6
open Session_itp

7 8
exception Noprogress

9 10 11 12 13 14
let () = Exn_printer.register
    (fun fmt e ->
      match e with
      | Noprogress -> Format.fprintf fmt "The transformation made no progress.\n"
      | _ -> raise e)

Clément Fumex's avatar
Clément Fumex committed
15 16 17 18 19 20 21 22 23
(** State of a proof *)
type proof_attempt_status =
    | Unedited (** editor not yet run for interactive proof *)
    | JustEdited (** edited but not run yet *)
    | Interrupted (** external proof has never completed *)
    | Scheduled (** external proof attempt is scheduled *)
    | Running (** external proof attempt is in progress *)
    | Done of Call_provers.prover_result (** external proof done *)
    | InternalFailure of exn (** external proof aborted by internal error *)
24
    | Uninstalled of Whyconf.prover (** prover is uninstalled *)
Clément Fumex's avatar
Clément Fumex committed
25

MARCHE Claude's avatar
MARCHE Claude committed
26 27 28 29 30 31 32 33 34
let print_status fmt st =
  match st with
  | Unedited -> fprintf fmt "Unedited"
  | JustEdited -> fprintf fmt "JustEdited"
  | Interrupted -> fprintf fmt "Interrupted"
  | Scheduled -> fprintf fmt "Scheduled"
  | Running -> fprintf fmt "Running"
  | Done r -> fprintf fmt "Done(%a)" Call_provers.print_prover_result r
  | InternalFailure e -> fprintf fmt "InternalFailure(%a)" Exn_printer.exn_printer e
35
  | Uninstalled pr -> fprintf fmt "Prover %a is uninstalled" Whyconf.print_prover pr
MARCHE Claude's avatar
MARCHE Claude committed
36 37

type transformation_status =
38
  | TSscheduled | TSdone of transID | TSfailed of (proofNodeID * exn)
39 40 41 42

let print_trans_status fmt st =
  match st with
  | TSscheduled -> fprintf fmt "TScheduled"
43
  | TSdone _tid -> fprintf fmt "TSdone" (* TODO print tid *)
44
  | TSfailed _e -> fprintf fmt "TSfailed"
Clément Fumex's avatar
Clément Fumex committed
45

46 47 48 49 50 51 52 53
type strategy_status = STSgoto of proofNodeID * int | STShalt

let print_strategy_status fmt st =
  match st with
  | STSgoto(id,n) -> fprintf fmt "goto step %d in proofNode %a" n print_proofNodeID id
  | STShalt -> fprintf fmt "halt"


54 55 56 57 58 59 60 61
open Ident

type proof_state = {
    th_state: bool Hid.t;
    tn_state: bool Htn.t;
    pn_state : bool Hpn.t;
  }

62
let init_proof_state () =
63 64 65 66
  {th_state = Hid.create 7;
   tn_state = Htn.create 42;
   pn_state = Hpn.create 42}

67
type controller =
68
  { mutable controller_session : Session_itp.session;
69
    proof_state : proof_state;
70
    controller_env : Env.env;
71 72 73
    controller_provers : (Whyconf.config_prover * Driver.driver) Whyconf.Hprover.t;
  }

74 75 76 77 78
let clear_proof_state c =
  Hid.clear c.proof_state.th_state;
  Htn.clear c.proof_state.tn_state;
  Hpn.clear c.proof_state.pn_state

79 80
let create_controller env =
  {
81 82
    controller_session = Session_itp.dummy_session;
    proof_state = init_proof_state ();
83
    controller_env = env;
84
    controller_provers = Whyconf.Hprover.create 7;
85
  }
86

87
let init_controller s c =
88
  clear_proof_state (c);
89 90
  c.controller_session <- s

Clément Fumex's avatar
Clément Fumex committed
91 92
let tn_proved c tid = Htn.find_def c.proof_state.tn_state false tid
let pn_proved c pid = Hpn.find_def c.proof_state.pn_state false pid
93 94 95 96 97
let th_proved c th  =
  if (theory_goals th = []) then
    Hid.find_def c.proof_state.th_state true (theory_name th)
  else
    Hid.find_def c.proof_state.th_state false (theory_name th)
98 99 100 101 102
let file_proved c f =
  if f.file_theories = [] then
    true
  else
    List.for_all (fun th -> th_proved c th) f.file_theories
103 104

(* Update the result of the theory according to its children *)
105
let update_theory_proof_state notification ps th =
106
  let goals = theory_goals th in
107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124
  if Hid.mem ps.th_state (theory_name th) then
  begin
    let old_state = Hid.find_def ps.th_state false (theory_name th) in
    let new_state =
      List.for_all (fun id -> Hpn.find_def ps.pn_state false id) goals in
    if new_state != old_state then
      begin
        Hid.replace ps.th_state (theory_name th) new_state;
        notification (ATh th) new_state
      end
  end
  else
  begin
    let new_state =
      List.for_all (fun id -> Hpn.find_def ps.pn_state false id) goals in
    Hid.replace ps.th_state (theory_name th) new_state;
    notification (ATh th) new_state
  end
125

126
let rec propagate_proof notification c (id: Session_itp.proofNodeID) =
127
  let tr_list = get_transformations c.controller_session id in
Clément Fumex's avatar
Clément Fumex committed
128 129
  let new_state = List.exists (fun id -> tn_proved c id) tr_list in
  if new_state != pn_proved c id then
130 131
    begin
      Hpn.replace c.proof_state.pn_state id new_state;
132 133
      notification (APn id) new_state;
      update_proof notification c id
134 135
    end

136
and propagate_trans notification c (tid: Session_itp.transID) =
137
  let proof_list = get_sub_tasks c.controller_session tid in
Clément Fumex's avatar
Clément Fumex committed
138 139
  let cur_state = tn_proved c tid in
  let new_state = List.for_all (fun id -> pn_proved c id) proof_list in
140 141 142
  if cur_state != new_state then
    begin
      Htn.replace c.proof_state.tn_state tid new_state;
143 144
      notification (ATn tid) new_state;
      propagate_proof notification c (get_trans_parent c.controller_session tid)
145 146
    end

147
and update_proof notification c id =
148
  match get_proof_parent c.controller_session id with
149 150
  | Theory th -> update_theory_proof_state notification c.proof_state th
  | Trans tid -> propagate_trans notification c tid
151 152 153

(* [update_proof_node c id b] Update the whole proof_state
   of c according to the result (id, b) *)
154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187
let update_proof_node notification c id b =
  if (Hpn.mem c.proof_state.pn_state id) then
  begin
    let b' = Hpn.find_def c.proof_state.pn_state false id in
    if b != b' then
    begin
      Hpn.replace c.proof_state.pn_state id b;
      notification (APn id) b;
      update_proof notification c id
    end
  end
  else
  begin
    Hpn.replace c.proof_state.pn_state id b;
    notification (APn id) b;
    update_proof notification c id
  end

(* [update_trans_node c id b] Update the proof_state of c to take the result of
   (id,b). Then propagates it to its parents *)
let update_trans_node notification c id b =
  if (Htn.mem c.proof_state.tn_state id) then
  begin
    let b' = Htn.find_def c.proof_state.tn_state false id in
    if b != b' then
    begin
      Htn.replace c.proof_state.tn_state id b;
      notification (ATn id) b
    end
  end
  else
    (Htn.replace c.proof_state.tn_state id b;
     notification (ATn id) b);
  propagate_proof notification c (get_trans_parent c.controller_session id)
188

189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216
(* init proof state after reload *)
let rec reload_goal_proof_state ps c g =
  let ses = c.controller_session in
  let tr_list = get_transformations ses g in
  let pa_list = get_proof_attempts ses g in
  let proved = List.exists (reload_trans_proof_state ps c) tr_list in
  let proved = List.exists reload_pa_proof_state pa_list || proved in
  Hpn.replace c.proof_state.pn_state g proved;
  proved

and reload_trans_proof_state ps c tr =
  let proof_list = get_sub_tasks c.controller_session tr in
  let proved = List.for_all (reload_goal_proof_state ps c) proof_list in
  Htn.replace c.proof_state.tn_state tr proved;
  proved

and reload_pa_proof_state pa =
  match pa.proof_obsolete, pa.Session_itp.proof_state with
  | false, Some pr when pr.Call_provers.pr_answer = Call_provers.Valid -> true
  | _ -> false

(* to be called after reload *)
let reload_theory_proof_state c th =
  let ps = c.proof_state in
  let goals = theory_goals th in
  let proved = List.for_all (reload_goal_proof_state ps c) goals in
  Hid.replace ps.th_state (theory_name th)
    proved
217 218 219 220 221 222 223 224 225 226 227 228 229

(* printing *)

module PSession = struct

  open Stdlib

  type any =
    | Session
    | File of file
    | Theory of theory
    | Goal of proofNodeID
    | Transf of transID
230
    | ProofAttempt of proof_attempt_node
231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246

  type 'a t = { tcont : controller;
                tkind : any }

  let decomp x =
    let s = x.tcont.controller_session in
    let n y acc = { x with tkind = y } :: acc in
    match x.tkind with
    | Session -> "", Hstr.fold (fun _ f -> n (File f)) (get_files s) []
    | File f ->
       f.file_name,
       List.fold_right (fun th -> n (Theory th)) f.file_detached_theories
                       (List.fold_right (fun th -> n (Theory th)) f.file_theories [])
    | Theory th ->
       let id = theory_name th in
       let name = id.Ident.id_string in
247
       let name = if th_proved x.tcont th then name^"!" else name^"?" in
248 249 250 251 252 253
       name,
       List.fold_right (fun g -> n (Goal g)) (theory_goals th)
                       (List.fold_right (fun g -> n (Goal g)) (theory_detached_goals th) [])
    | Goal id ->
       let gid = get_proof_name s id in
       let name = gid.Ident.id_string in
254
       let name = if pn_proved x.tcont id then name^"!" else name^"?" in
255 256 257 258 259 260 261 262 263 264 265 266 267 268
       let pas = get_proof_attempts s id in
       let trs = get_transformations s id in
       name,
       List.fold_right (fun g -> n (Transf g)) trs
                       (List.fold_right (fun g -> n (ProofAttempt g)) pas [])
    | ProofAttempt pa ->
       Pp.sprintf_wnl "%a%s%s"
                      Whyconf.print_prover pa.prover
                      (match pa.Session_itp.proof_state with
                       | Some { Call_provers.pr_answer = Call_provers.Valid} -> ""
                       | _ -> "?")
                      (if pa.proof_obsolete then "O" else ""), []
    | Transf id ->
       let name = get_transf_name s id in
269
       let name = if tn_proved x.tcont id then name^"!" else name^"?" in
270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286
       let sts = get_sub_tasks s id in
       let dsts = get_detached_sub_tasks s id in
       name,
       List.fold_right (fun g -> n (Goal g)) sts
                       (List.fold_right (fun g -> n (Goal g)) dsts [])

end

module P = Print_tree.PMake(PSession)

let print_session fmt c =
  P.print fmt { PSession.tcont = c; PSession.tkind = PSession.Session }

(*********)



287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311
let read_file env ?format fn =
  let theories = Env.read_file Env.base_language env ?format fn in
  let ltheories =
    Stdlib.Mstr.fold
      (fun name th acc ->
        (* Hack : with WP [name] and [th.Theory.th_name.Ident.id_string] *)
        let th_name =
          Ident.id_register (Ident.id_derive name th.Theory.th_name) in
         match th.Theory.th_name.Ident.id_loc with
           | Some l -> (l,th_name,th)::acc
           | None   -> (Loc.dummy_position,th_name,th)::acc)
      theories []
  in
  let th =  List.sort
      (fun (l1,_,_) (l2,_,_) -> Loc.compare l1 l2)
      ltheories
  in
  List.map (fun (_,_,a) -> a) th


(** reload files, associating old proof attempts and transformations
    to the new goals.  old theories and old goals for which we cannot
    find a corresponding new theory resp. old goal are kept, with
    tasks associated to them *)

312
let merge_file (old_ses : session) (c : controller) ~use_shapes _ file =
313 314 315 316 317 318
  let format = file.file_format in
  let old_theories = file.file_theories in
  let file_name = Filename.concat (get_dir old_ses) file.file_name in
  let new_theories =
    try
      read_file c.controller_env file_name ?format
319 320
    with e -> (* TODO: filter only syntax error and typing errors *)
      raise e
321
  in
322
  merge_file_section
323 324
    c.controller_session ~use_shapes ~old_ses ~old_theories
    ~env:c.controller_env file_name new_theories format;
325 326 327
  Stdlib.Hstr.iter
    (fun _ f -> List.iter (reload_theory_proof_state c) f.file_theories)
    (get_files c.controller_session)
328 329


330
let reload_files (c : controller) ~use_shapes =
331 332
  let old_ses = c.controller_session in
  c.controller_session <- empty_session ~shape_version:(get_shape_version old_ses) (get_dir old_ses);
333
  Stdlib.Hstr.iter (merge_file old_ses c ~use_shapes) (get_files old_ses)
334 335 336 337

let add_file c ?format fname =
  let theories = read_file c.controller_env ?format fname in
  add_file_section ~use_shapes:false c.controller_session fname theories format
338

339 340 341 342 343 344 345 346


module type Scheduler = sig
  val timeout: ms:int -> (unit -> bool) -> unit
  val idle: prio:int -> (unit -> bool) -> unit
end


347 348
module Make(S : Scheduler) = struct

MARCHE Claude's avatar
MARCHE Claude committed
349 350 351 352 353 354 355 356
let scheduled_proof_attempts = Queue.create ()

let prover_tasks_in_progress = Queue.create ()

let timeout_handler_running = ref false

let max_number_of_running_provers = ref 1

357 358 359 360 361
let set_max_tasks n =
  max_number_of_running_provers := n;
  Prove_client.set_max_running_provers n


MARCHE Claude's avatar
MARCHE Claude committed
362
let number_of_running_provers = ref 0
363

364 365 366 367
let observer = ref (fun _ _ _ -> ())

let register_observer = (:=) observer

368
module Hprover = Whyconf.Hprover
MARCHE Claude's avatar
MARCHE Claude committed
369

370
(*
MARCHE Claude's avatar
MARCHE Claude committed
371 372 373 374 375 376 377 378 379
let dummy_result =
  {
    pr_answer = Call_provers.Unknown ("I'm dumb", None);
    pr_status = Unix.WEXITED 0;
    pr_output = "";
    pr_time   = 3.14;
    pr_steps  = 42;
    pr_model  = Model_parser.default_model;
}
380
 *)
MARCHE Claude's avatar
MARCHE Claude committed
381

382 383 384 385
let build_prover_call c id pr limit callback =
  let (config_pr,driver) = Hprover.find c.controller_provers pr in
  let command =
    Whyconf.get_complete_command config_pr
MARCHE Claude's avatar
MARCHE Claude committed
386
          ~with_steps:Call_provers.(limit.limit_steps <> empty_limit.limit_steps) in
387
  let task = Session_itp.get_task c.controller_session id in
388
  let tables = Session_itp.get_tables c.controller_session id in
389
  let call =
MARCHE Claude's avatar
itp  
MARCHE Claude committed
390
    Driver.prove_task ?old:None ~cntexample:true ~inplace:false ~command
391
                      ~limit ?name_table:tables driver task
392
  in
393
  let pa = (c.controller_session,id,pr,callback,false,call) in
MARCHE Claude's avatar
MARCHE Claude committed
394 395 396 397 398 399
  Queue.push pa prover_tasks_in_progress

let timeout_handler () =
  (* examine all the prover tasks in progress *)
  let q = Queue.create () in
  while not (Queue.is_empty prover_tasks_in_progress) do
400
    let (ses,id,pr,callback,started,call) as c = Queue.pop prover_tasks_in_progress in
401
    match Call_provers.query_call call with
MARCHE Claude's avatar
MARCHE Claude committed
402 403 404 405 406
    | Call_provers.NoUpdates -> Queue.add c q
    | Call_provers.ProverStarted ->
       assert (not started);
       callback Running;
       incr number_of_running_provers;
407
       Queue.add (ses,id,pr,callback,true,call) q
MARCHE Claude's avatar
MARCHE Claude committed
408 409
    | Call_provers.ProverFinished res ->
       if started then decr number_of_running_provers;
410 411 412
       (* update the session *)
       update_proof_attempt ses id pr res;
       (* inform the callback *)
MARCHE Claude's avatar
MARCHE Claude committed
413
       callback (Done res)
414 415 416 417 418 419 420 421
    | Call_provers.ProverInterrupted ->
       if started then decr number_of_running_provers;
       (* inform the callback *)
       callback (Interrupted)
    | Call_provers.InternalFailure exn ->
       if started then decr number_of_running_provers;
       (* inform the callback *)
       callback (InternalFailure (exn))
MARCHE Claude's avatar
MARCHE Claude committed
422 423
  done;
  Queue.transfer q prover_tasks_in_progress;
424
  (* if the number of prover tasks is less than 3 times the maximum
MARCHE Claude's avatar
MARCHE Claude committed
425 426
     number of running provers, then we heuristically decide to add
     more tasks *)
427 428 429 430 431 432 433 434
  begin
    try
      for _i = Queue.length prover_tasks_in_progress
          to 3 * !max_number_of_running_provers do
        let (c,id,pr,limit,callback) = Queue.pop scheduled_proof_attempts in
        try
          build_prover_call c id pr limit callback
        with e when not (Debug.test_flag Debug.stack_trace) ->
435
          (*Format.eprintf
436
            "@[Exception raised in Controller_itp.build_prover_call:@ %a@.@]"
437
            Exn_printer.exn_printer e;*)
438 439 440 441 442 443 444 445 446
          callback (InternalFailure e)
      done
  with Queue.Empty -> ()
  end;
  let scheduled = Queue.length scheduled_proof_attempts in
  let waiting_or_running = Queue.length prover_tasks_in_progress in
  let running = !number_of_running_provers in
  !observer scheduled (waiting_or_running - running) running;
  true
MARCHE Claude's avatar
MARCHE Claude committed
447 448 449 450 451 452 453 454

let run_timeout_handler () =
  if not !timeout_handler_running then
    begin
      timeout_handler_running := true;
      S.timeout ~ms:125 timeout_handler;
    end

455
let schedule_proof_attempt_r c id pr ~limit ~callback =
456 457 458 459 460
  let panid =
    graft_proof_attempt c.controller_session id pr ~timelimit:limit.Call_provers.limit_time
  in
  Queue.add (c,id,pr,limit,callback panid) scheduled_proof_attempts;
  callback panid Scheduled;
MARCHE Claude's avatar
MARCHE Claude committed
461
  run_timeout_handler ()
Clément Fumex's avatar
Clément Fumex committed
462

463
let schedule_proof_attempt c id pr ~limit ~callback ~notification =
Sylvain Dailler's avatar
Sylvain Dailler committed
464
  let callback panid s = callback panid s;
Sylvain Dailler's avatar
Sylvain Dailler committed
465 466 467 468
    (match s with
    | Done pr -> update_proof_node notification c id (pr.Call_provers.pr_answer == Call_provers.Valid)
    | Interrupted | InternalFailure _ -> update_proof_node notification c id false
    | _ -> ())
469
  in
470
  schedule_proof_attempt_r c id pr ~limit:limit ~callback
471 472

let schedule_transformation_r c id name args ~callback =
473 474
  let apply_trans () =
    let task = get_task c.controller_session id in
475 476 477
    let tables = match get_tables c.controller_session id with
    | None -> raise (Task.Bad_name_table "schedule_transformation")
    | Some tables -> tables in
478 479
    begin
      try
480
        let subtasks = Trans.apply_transform_args name c.controller_env args tables task in
481 482 483 484
        (* if result is same as input task, consider it as a failure *)
        begin
          match subtasks with
          | [t'] when Task.task_equal t' task ->
485
             callback (TSfailed (id, Noprogress))
486 487 488 489 490
          | _ ->
             let tid = graft_transf c.controller_session id name args subtasks in
             callback (TSdone tid)
        end
      with e when not (Debug.test_flag Debug.stack_trace) ->
491
        (* Format.eprintf
492
          "@[Exception raised in Trans.apply_transform %s:@ %a@.@]"
493
          name Exn_printer.exn_printer e; TODO *)
494
        callback (TSfailed (id, e))
495 496
    end;
    false
497 498 499
  in
  S.idle ~prio:0 apply_trans;
  callback TSscheduled
Clément Fumex's avatar
Clément Fumex committed
500

501
let schedule_transformation c id name args ~callback ~notification =
502
  let callback s = callback s; (match s with
503 504 505 506 507 508
      | TSdone tid ->
        let has_subtasks =
          match get_sub_tasks c.controller_session tid with
          | [] -> true
          | _ -> false
        in
509
        update_trans_node notification c tid has_subtasks
510
      | TSfailed _e -> ()
511
      | _ -> ()) in
512 513 514 515
  schedule_transformation_r c id name args ~callback

open Strategy

516
let run_strategy_on_goal c id strat ~callback_pa ~callback_tr ~callback ~notification =
517 518 519 520 521 522
  let rec exec_strategy pc strat g =
    if pc < 0 || pc >= Array.length strat then
      callback STShalt
    else
      match Array.get strat pc with
      | Icall_prover(p,timelimit,memlimit) ->
MARCHE Claude's avatar
MARCHE Claude committed
523 524
         let callback panid res =
           callback_pa panid res;
525 526 527 528 529 530 531 532 533 534 535
           match res with
           | Scheduled | Running -> (* nothing to do yet *) ()
           | Done { Call_provers.pr_answer = Call_provers.Valid } ->
              (* proof succeeded, nothing more to do *)
              callback STShalt
           | Interrupted | InternalFailure _
           | Done _ ->
              (* proof did not succeed, goto to next step *)
              callback (STSgoto (g,pc+1));
              let run_next () = exec_strategy (pc+1) strat g; false in
              S.idle ~prio:0 run_next
536
           | Unedited | JustEdited | Uninstalled _ ->
537 538 539 540 541 542
                         (* should not happen *)
                         assert false
         in
         let limit = { Call_provers.empty_limit with
                       Call_provers.limit_time = timelimit;
                       limit_mem  = memlimit} in
543
         schedule_proof_attempt c g p ~limit ~callback ~notification
544 545
      | Itransform(trname,pcsuccess) ->
         let callback ntr =
MARCHE Claude's avatar
MARCHE Claude committed
546
           callback_tr ntr;
547
           match ntr with
548
           | TSfailed _e -> (* transformation failed *)
549 550 551 552 553 554 555 556 557 558 559 560
              callback (STSgoto (g,pc+1));
              let run_next () = exec_strategy (pc+1) strat g; false in
              S.idle ~prio:0 run_next
           | TSscheduled -> ()
           | TSdone tid ->
              List.iter
                (fun g ->
                 callback (STSgoto (g,pcsuccess));
                 let run_next () =
                   exec_strategy pcsuccess strat g; false
                 in
                 S.idle ~prio:0 run_next)
MARCHE Claude's avatar
MARCHE Claude committed
561
                (get_sub_tasks c.controller_session tid)
562
         in
563
         schedule_transformation c g trname [] ~callback ~notification
564 565 566 567 568 569
      | Igoto pc ->
         callback (STSgoto (g,pc));
         exec_strategy pc strat g
  in
  exec_strategy 0 strat id

Sylvain Dailler's avatar
Sylvain Dailler committed
570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628
let schedule_pa_with_same_arguments c (pa: proof_attempt_node) (pn: proofNodeID) ~callback ~notification =
  let prover = pa.prover in
  let limit = pa.limit in
  schedule_proof_attempt c pn prover ~limit ~callback ~notification

let schedule_tr_with_same_arguments c (tr: transID) (pn: proofNodeID) ~callback ~notification =
  let s = c.controller_session in
  let args = get_transf_args s tr in
  let name = get_transf_name s tr in
  schedule_transformation c pn name args ~callback ~notification

exception BadCopyPaste

(* Reproduce the transformation made on node on an other one *)
let rec copy_paste ~notification ~callback_pa ~callback_tr c from_any to_any =
  let s = c.controller_session in
  if (not (is_below s from_any to_any) &&
      not (is_below s to_any from_any)) then
    match from_any, to_any with
    | AFile _, AFile _ ->
        raise BadCopyPaste
    | ATh _from_th, ATh _to_th ->
        raise BadCopyPaste
    | APn from_pn, APn to_pn ->
      let from_pa_list = get_proof_attempts s from_pn in
      List.iter (fun x -> schedule_pa_with_same_arguments c x to_pn
          ~callback:callback_pa ~notification) from_pa_list;
      let from_tr_list = get_transformations s from_pn in
      let callback x st = callback_tr st;
        match st with
        | TSdone tid -> copy_paste c (ATn x) (ATn tid) ~notification ~callback_pa ~callback_tr
        | _ -> ()
      in
      List.iter (fun x -> schedule_tr_with_same_arguments c x to_pn
          ~callback:(callback x) ~notification) from_tr_list
    | ATn from_tn, ATn to_tn ->
        let from_tn_list = get_sub_tasks s from_tn in
        let to_tn_list = get_sub_tasks s to_tn in
        if (List.length from_tn_list = List.length to_tn_list) then
          List.iter2 (fun x y -> copy_paste c (APn x) (APn y)
              ~notification ~callback_pa ~callback_tr) from_tn_list to_tn_list
    | _ -> raise BadCopyPaste


let copy_detached ~copy c from_any =
  match from_any with
  | APn from_pn ->
    begin
      let pn_id = copy_proof_node_as_detached c.controller_session from_pn in
      let parent = get_any_parent c.controller_session from_any in
      match parent with
      | None -> raise BadCopyDetached
      | Some parent ->
          copy ~parent (APn pn_id);
          copy_structure ~notification:copy c.controller_session (APn from_pn) (APn pn_id)
    end
  | _ -> raise BadCopyDetached (* Only goal can be detached *)


629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665
let replay_proof_attempt c pr limit (id: proofNodeID) ~callback =

  (* The replay can be done on a different machine so we need
     to check more things before giving the attempt to the scheduler *)
  if not (Hprover.mem c.controller_provers pr) then
    callback (Uninstalled pr)
  else
    (Queue.add (c, id, pr, limit, callback) scheduled_proof_attempts;
     callback Scheduled;
     run_timeout_handler ())

type report =
  | Result of Call_provers.prover_result * Call_provers.prover_result
  (** Result(new_result,old_result) *)
  | CallFailed of exn
  | Prover_not_installed
  | Edited_file_absent of string
  | No_former_result of Call_provers.prover_result

(* TODO find a better way to print it *)
let print_report fmt (r: report) =
  match r with
  | Result (new_r, old_r) ->
    Format.fprintf fmt "new_result = %a, old_result = %a@."
      Call_provers.print_prover_result new_r
      Call_provers.print_prover_result old_r
  | CallFailed _ ->
    Format.fprintf fmt "Callfailed@."
  | Prover_not_installed ->
    Format.fprintf fmt "Prover not installed@."
  | Edited_file_absent _ ->
    Format.fprintf fmt "No edited file@."
  | No_former_result new_r ->
    Format.fprintf fmt "new_result = %a, no former result@."
      Call_provers.print_prover_result new_r

(* TODO to be removed when we have a better way to print *)
666
let replay_print fmt (lr: (proofNodeID * Whyconf.prover * Call_provers.resource_limit * report) list) =
667 668 669 670
  let pp_elem fmt (id, pr, rl, report) =
    fprintf fmt "ProofNodeID: %d, Prover: %a, Timelimit?: %d, Result: %a@."
      (Obj.magic id) Whyconf.print_prover pr rl.Call_provers.limit_time print_report report
  in
671
  Format.fprintf fmt "%a@." (Pp.print_list Pp.newline pp_elem) lr
672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746

let replay ~remove_obsolete ~use_steps c ~callback =

  (* === Side functions used by replay === *)
  let counting s count =
    match s with
    | Interrupted -> count := !count - 1
    | Done _ -> count := !count - 1
    | InternalFailure _ -> count := !count - 1
    | Uninstalled _ -> count := !count - 1
    | _ -> () in

  let craft_report s r id pr limits pa =
    match s with
    | Interrupted -> assert false
(* Never happen r := (id, pr, limits, CallFailed (User_interrupt)) :: !r *)
    | Done new_r ->
        (match pa.Session_itp.proof_state with
        | None -> (r := (id, pr, limits, No_former_result new_r) :: !r)
        | Some old_r -> r := (id, pr, limits, Result (new_r, old_r)) :: !r)
    | InternalFailure e ->
        r := (id, pr, limits, CallFailed (e)) :: !r
    | Uninstalled _ -> r := (id, pr, limits, Prover_not_installed) :: !r;
    | _ -> () in

  let update_node pa s =
    match s with
    | Done new_r ->
        (pa.Session_itp.proof_state <- Some new_r;
         pa.proof_obsolete <- false)
    | InternalFailure _ ->
        pa.proof_obsolete <- true
    | Uninstalled _ ->
        pa.proof_obsolete <- true
    | _ -> () in

  let update_uninstalled c remove_obsolete id s pr =
    match s with
    | Uninstalled _ ->
        if remove_obsolete then
          remove_proof_attempt c.controller_session id pr
        else
          ()
    | _ -> () in

  (* === replay === *)
  let session = c.controller_session in
  let count = ref 0 in
  let report = ref [] in

  (* TODO count the number of node in a more efficient way *)
  (* Counting the number of proof_attempt to print report only once *)
  Session_itp.session_iter_proof_attempt
    (fun _ _ -> count := !count + 1) session;

  (* Replaying function *)
  let replay_pa id pa =
    let pr = pa.prover in
    (* If use_steps, we give only steps as a limit *)
    let limit =
      if use_steps then
        Call_provers.{empty_limit with limit_steps = pa.limit.limit_steps}
      else
        pa.limit
    in
    replay_proof_attempt c pr limit id
      ~callback:(fun s ->
        counting s count; craft_report s report id pr limit pa; update_node pa s;
        update_uninstalled c remove_obsolete id s pr;
        if !count = 0 then callback !report) in

  (* Calling replay on all the proof_attempts of the session *)
  Session_itp.session_iter_proof_attempt
    (fun id pa -> replay_pa id pa) session

747
end