session_itp.ml 66.9 KB
Newer Older
1 2 3 4 5 6 7 8 9 10
(********************************************************************)
(*                                                                  *)
(*  The Why3 Verification Platform   /   The Why3 Development Team  *)
(*  Copyright 2010-2017   --   INRIA - CNRS - Paris-Sud University  *)
(*                                                                  *)
(*  This software is distributed under the terms of the GNU Lesser  *)
(*  General Public License version 2.1, with the special exception  *)
(*  on linking described in file LICENSE.                           *)
(*                                                                  *)
(********************************************************************)
11 12 13 14 15





Clément Fumex's avatar
Clément Fumex committed
16 17 18 19 20
open Stdlib

module Hprover = Whyconf.Hprover

let debug = Debug.register_info_flag "session_itp"
Clément Fumex's avatar
Clément Fumex committed
21 22
    ~desc:"Pring@ debugging@ messages@ about@ Why3@ session@ \
           creation,@ reading@ and@ writing."
Clément Fumex's avatar
Clément Fumex committed
23

24 25
let debug_merge = Debug.lookup_flag "session_pairing"

Sylvain Dailler's avatar
Sylvain Dailler committed
26 27
let debug_stack_trace = Debug.lookup_flag "stack_trace"

Clément Fumex's avatar
Clément Fumex committed
28 29
type transID = int
type proofNodeID = int
30
type proofAttemptID = int
Clément Fumex's avatar
Clément Fumex committed
31

MARCHE Claude's avatar
MARCHE Claude committed
32
let print_proofNodeID fmt id =
MARCHE Claude's avatar
MARCHE Claude committed
33 34 35 36
  Format.fprintf fmt "proofNodeID<%d>" id

let print_proofAttemptID fmt id =
  Format.fprintf fmt "proofAttemptID<%d>" id
MARCHE Claude's avatar
MARCHE Claude committed
37

Clément Fumex's avatar
Clément Fumex committed
38
type theory = {
Clément Fumex's avatar
Clément Fumex committed
39 40
  theory_name                   : Ident.ident;
  theory_goals                  : proofNodeID list;
41
  theory_parent_name            : string;
42
  theory_is_detached            : bool;
Clément Fumex's avatar
Clément Fumex committed
43 44
  mutable theory_detached_goals : proofNodeID list;
  mutable theory_checksum       : Termcode.checksum option;
Clément Fumex's avatar
Clément Fumex committed
45 46
}

47
let theory_name t = t.theory_name
48
let theory_goals t = t.theory_goals
Clément Fumex's avatar
Clément Fumex committed
49
let theory_detached_goals t = t.theory_detached_goals
50

Clément Fumex's avatar
Clément Fumex committed
51
type proof_parent = Trans of transID | Theory of theory
Clément Fumex's avatar
Clément Fumex committed
52

53 54
type proof_attempt_node = {
  parent                 : proofNodeID;
55
  mutable prover         : Whyconf.prover;
Clément Fumex's avatar
Clément Fumex committed
56 57
  limit                  : Call_provers.resource_limit;
  mutable proof_state    : Call_provers.prover_result option;
Clément Fumex's avatar
Clément Fumex committed
58
  (* None means that the call was not done or never returned *)
Clément Fumex's avatar
Clément Fumex committed
59
  mutable proof_obsolete : bool;
60
  mutable proof_script   : string option;  (* non empty for external ITP *)
Clément Fumex's avatar
Clément Fumex committed
61 62
}

63 64 65 66
let set_proof_script pa file =
  assert (pa.proof_script = None);
  pa.proof_script <- Some file

Clément Fumex's avatar
Clément Fumex committed
67
type proof_node = {
Clément Fumex's avatar
Clément Fumex committed
68
  proofn_name                    : Ident.ident;
MARCHE Claude's avatar
MARCHE Claude committed
69
  proofn_expl                    : string;
Clément Fumex's avatar
Clément Fumex committed
70
  proofn_parent                  : proof_parent;
71
  proofn_checksum                : Termcode.checksum option;
Clément Fumex's avatar
Clément Fumex committed
72
  proofn_shape                   : Termcode.shape;
73
  proofn_attempts                : proofAttemptID Hprover.t;
Clément Fumex's avatar
Clément Fumex committed
74 75 76 77
  mutable proofn_transformations : transID list;
}

type transformation_node = {
Clément Fumex's avatar
Clément Fumex committed
78 79 80 81 82
  transf_name                      : string;
  transf_args                      : string list;
  transf_subtasks                  : proofNodeID list;
  transf_parent                    : proofNodeID;
  mutable transf_detached_subtasks : proofNodeID list;
Clément Fumex's avatar
Clément Fumex committed
83 84 85
}

type file = {
Clément Fumex's avatar
Clément Fumex committed
86 87
  file_name              : string;
  file_format            : string option;
88
  mutable file_theories          : theory list;
Clément Fumex's avatar
Clément Fumex committed
89 90
}

91 92 93 94
let file_name f = f.file_name
let file_format f = f.file_format
let file_theories f = f.file_theories

95 96 97 98 99 100 101
type any =
  | AFile of file
  | ATh of theory
  | ATn of transID
  | APn of proofNodeID
  | APa of proofAttemptID

102 103
module Hpn = Hint
module Htn = Hint
104
module Hpan = Hint
105

106
type session = {
107 108
  proofAttempt_table            : proof_attempt_node Hint.t;
  mutable next_proofAttemptID   : int;
Clément Fumex's avatar
Clément Fumex committed
109
  proofNode_table               : proof_node Hint.t;
Clément Fumex's avatar
Clément Fumex committed
110 111 112
  mutable next_proofNodeID      : int;
  trans_table                   : transformation_node Hint.t;
  mutable next_transID          : int;
Clément Fumex's avatar
Clément Fumex committed
113
  session_dir                   : string; (** Absolute path *)
Clément Fumex's avatar
Clément Fumex committed
114 115 116
  session_files                 : file Hstr.t;
  mutable session_shape_version : int;
  session_prover_ids            : int Hprover.t;
117 118
  (* tasks *)
  session_raw_tasks : Task.task Hpn.t;
119
  session_tasks : (Task.task * Trans.naming_table) Hpn.t;
120 121 122 123 124
  (* proved status *)
  file_state: bool Hstr.t;
  th_state: bool Ident.Hid.t;
  tn_state: bool Htn.t;
  pn_state : bool Hpn.t;
Clément Fumex's avatar
Clément Fumex committed
125
}
Clément Fumex's avatar
Clément Fumex committed
126

127 128


129
let theory_parent s th =
130 131
  Debug.dprintf debug "[Session_itp.theory_parent] th.parent_name = %s@."
                th.theory_parent_name;
132 133
  Hstr.find s.session_files th.theory_parent_name

134
let session_iter_proof_attempt f s =
135
  Hint.iter f s.proofAttempt_table
136

137
(* This is not needed. Keeping it as information on the structure
138 139 140 141 142 143 144
type tree = {
    tree_node_id : proofNodeID;
    tree_goal_name : string;
    tree_proof_attempts : proof_attempt list; (* proof attempts on this node *)
    tree_transformations : (transID * string * tree list) list;
                                (* transformations on this node *)
  }
145
*)
MARCHE Claude's avatar
MARCHE Claude committed
146

147
(*
Clément Fumex's avatar
Clément Fumex committed
148
let rec get_tree s id : tree =
MARCHE Claude's avatar
MARCHE Claude committed
149
  let t = Hint.find s.proofNode_table id in
MARCHE Claude's avatar
MARCHE Claude committed
150
  let pal =
151
    Hprover.fold (fun _ pa acc -> pa.proofa_attempt::acc) t.proofn_attempts []
MARCHE Claude's avatar
MARCHE Claude committed
152
  in
MARCHE Claude's avatar
MARCHE Claude committed
153
  let trl = List.map (get_trans s) t.proofn_transformations in
154 155 156 157 158
  { tree_node_id = id;
    tree_goal_name = t.proofn_name.Ident.id_string;
    tree_proof_attempts = pal;
    tree_transformations = trl;
  }
MARCHE Claude's avatar
MARCHE Claude committed
159 160 161

and get_trans s id =
  let tr = Hint.find s.trans_table id in
Clément Fumex's avatar
Clément Fumex committed
162
  (id, tr.transf_name, List.map (get_tree s) tr.transf_subtasks)
163
*)
MARCHE Claude's avatar
MARCHE Claude committed
164

165
(*
Clément Fumex's avatar
Clément Fumex committed
166
let get_theories s =
MARCHE Claude's avatar
MARCHE Claude committed
167
  Hstr.fold
168
    (fun _fn f acc ->
MARCHE Claude's avatar
MARCHE Claude committed
169 170
     let c =
       List.map
Clément Fumex's avatar
Clément Fumex committed
171
         (fun th -> (th.theory_name.Ident.id_string, th.theory_goals))
MARCHE Claude's avatar
MARCHE Claude committed
172 173
         f.file_theories
     in
174
     (f,c) :: acc)
MARCHE Claude's avatar
MARCHE Claude committed
175
    s.session_files []
176 177 178
 *)

let get_files s = s.session_files
179
let get_file s name = Hstr.find s.session_files name
Clément Fumex's avatar
Clément Fumex committed
180 181 182
let get_dir s = s.session_dir

let get_shape_version s = s.session_shape_version
MARCHE Claude's avatar
MARCHE Claude committed
183

184
(*
Clément Fumex's avatar
Clément Fumex committed
185 186 187 188 189
let get_node (s : session) (n : int) =
  let _ = Hint.find s.proofNode_table n in n

let get_trans (s : session) (n : int) =
  let _ = Hint.find s.trans_table n in n
190
*)
Clément Fumex's avatar
Clément Fumex committed
191

192
(* Generation of new IDs *)
Clément Fumex's avatar
Clément Fumex committed
193 194 195 196 197 198 199 200 201 202
let gen_transID (s : session) =
  let id = s.next_transID in
  s.next_transID <- id + 1;
  id

let gen_proofNodeID (s : session) =
  let id = s.next_proofNodeID in
  s.next_proofNodeID <- id + 1;
  id

203 204 205 206 207
let gen_proofAttemptID (s : session) =
  let id = s.next_proofAttemptID in
  s.next_proofAttemptID <- id + 1;
  id

208 209
(* Get elements of the session tree *)

Clément Fumex's avatar
Clément Fumex committed
210
exception BadID
211

212
let get_proof_attempt_node (s : session) (id : proofAttemptID) =
213 214 215 216
  try
    Hint.find s.proofAttempt_table id
  with Not_found -> raise BadID

Clément Fumex's avatar
Clément Fumex committed
217 218 219 220 221
let get_proofNode (s : session) (id : proofNodeID) =
  try
    Hint.find s.proofNode_table id
  with Not_found -> raise BadID

222 223 224
let get_raw_task s id =
  Hpn.find s.session_raw_tasks id

225
let get_task s n =
226
  try
227
    Hpn.find s.session_tasks n
228 229
  with Not_found ->
    let t = get_raw_task s n in
230
    let ti = Trans.apply Introduction.introduce_premises t in
231
    let ta = Args_wrapper.build_naming_tables ti in
232
    Hpn.add s.session_tasks n (ti,ta);
233
    ti,ta
234

Clément Fumex's avatar
Clément Fumex committed
235 236 237 238 239
let get_transfNode (s : session) (id : transID) =
  try
    Hint.find s.trans_table id
  with Not_found -> raise BadID

Clément Fumex's avatar
Clément Fumex committed
240 241 242
let get_transformations (s : session) (id : proofNodeID) =
  (get_proofNode s id).proofn_transformations

243 244 245
let get_proof_attempt_ids (s : session) (id : proofNodeID) =
  (get_proofNode s id).proofn_attempts

MARCHE Claude's avatar
MARCHE Claude committed
246
let get_proof_attempt_parent (s : session) (a : proofAttemptID) =
247
  (get_proof_attempt_node s a).parent
MARCHE Claude's avatar
MARCHE Claude committed
248

249
let get_proof_attempts (s : session) (id : proofNodeID) =
250
  Hprover.fold (fun _ a l ->
251 252
                let pa = get_proof_attempt_node s a in
                pa :: l)
253
               (get_proofNode s id).proofn_attempts []
254

Clément Fumex's avatar
Clément Fumex committed
255 256 257
let get_sub_tasks (s : session) (id : transID) =
  (get_transfNode s id).transf_subtasks

Clément Fumex's avatar
Clément Fumex committed
258 259 260
let get_detached_sub_tasks (s : session) (id : transID) =
  (get_transfNode s id).transf_detached_subtasks

261 262 263 264
let get_transf_args (s : session) (id : transID) =
  (get_transfNode s id).transf_args

let get_transf_name (s : session) (id : transID) =
265 266 267 268 269
  (get_transfNode s id).transf_name

let get_proof_name (s : session) (id : proofNodeID) =
  (get_proofNode s id).proofn_name

MARCHE Claude's avatar
MARCHE Claude committed
270 271 272
let get_proof_expl (s : session) (id : proofNodeID) =
  (get_proofNode s id).proofn_expl

273 274 275 276 277 278
let get_proof_parent (s : session) (id : proofNodeID) =
  (get_proofNode s id).proofn_parent

let get_trans_parent (s : session) (id : transID) =
  (get_transfNode s id).transf_parent

279 280 281 282
(* TODO to be done with detached transformations *)
let get_detached_trans (_s: session) (_id: proofNodeID) =
  []

283
let rec is_detached (s: session) (a: any) =
284 285
  match a with
  | AFile _file -> false
286
  | ATh th     -> th.theory_is_detached
287 288
  | ATn tn     ->
    let pn_id = get_trans_parent s tn in
289
    is_detached s (APn pn_id) ||
Sylvain Dailler's avatar
Sylvain Dailler committed
290
    List.exists (fun x -> x = tn) (get_detached_trans s pn_id)
291
  | APn pn     ->
292 293 294 295
    begin
      try let _ = get_raw_task s pn in false
      with Not_found -> true
    end
296 297 298
  | APa pa     ->
    let pa = get_proof_attempt_node s pa in
    let pn_id = pa.parent in
299
    is_detached s (APn pn_id)
300

Sylvain Dailler's avatar
Sylvain Dailler committed
301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324
let rec get_encapsulating_theory s any =
  match any with
  | AFile _f -> assert (false)
  | ATh th -> th
  | ATn tn ->
      let pn_id = get_trans_parent s tn in
      get_encapsulating_theory s (APn pn_id)
  | APn pn ->
      (match get_proof_parent s pn with
      | Theory th -> th
      | Trans tn -> get_encapsulating_theory s (ATn tn)
      )
  | APa pa ->
      let pn = get_proof_attempt_parent s pa in
      get_encapsulating_theory s (APn pn)

let get_encapsulating_file s any =
  match any with
  | AFile f -> f
  | ATh th -> theory_parent s th
  | _ ->
      let th = get_encapsulating_theory s any in
      theory_parent s th

325 326 327 328
let set_obsolete s paid b =
  let pa = get_proof_attempt_node s paid in
  pa.proof_obsolete <- b

329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361

(* Iterations functions on the session tree *)

let rec fold_all_any_of_transn s f acc trid =
  let tr = get_transfNode s trid in
  let acc =
    List.fold_left
      (fold_all_any_of_proofn s f)
      acc tr.transf_subtasks
  in
  f acc (ATn trid)

and fold_all_any_of_proofn s f acc pnid =
  let pn = get_proofNode s pnid in
  let acc =
    List.fold_left
      (fun acc trid ->
        fold_all_any_of_transn s f acc trid)
      acc pn.proofn_transformations
  in
  let acc =
    Hprover.fold
      (fun _p paid acc ->
        f acc (APa paid))
      pn.proofn_attempts acc
  in
  f acc (APn pnid)

let fold_all_any_of_theory s f acc th =
  let acc = List.fold_left (fold_all_any_of_proofn s f) acc th.theory_goals in
  f acc (ATh th)

let fold_all_any_of_file s f acc file =
Sylvain Dailler's avatar
Sylvain Dailler committed
362 363
  let acc =
    List.fold_left (fold_all_any_of_theory s f) acc file.file_theories in
364 365 366 367 368 369 370 371 372 373
  f acc (AFile file)

let fold_all_any s f acc any =
  match any with
  | AFile file -> fold_all_any_of_file s f acc file
  | ATh th -> fold_all_any_of_theory s f acc th
  | APn pn -> fold_all_any_of_proofn s f acc pn
  | ATn tn -> fold_all_any_of_transn s f acc tn
  | APa _ -> f acc any

374 375 376 377
let fold_all_session s f acc =
  let files = get_files s in
  Hstr.fold (fun _key file acc -> fold_all_any s f acc (AFile file)) files acc

378

379 380 381 382 383 384 385 386 387 388 389 390 391
let rec fold_all_sub_goals_of_proofn s f acc pnid =
  let pn = get_proofNode s pnid in
  let acc =
    List.fold_left
      (fun acc trid ->
         let tr = get_transfNode s trid in
         List.fold_left
           (fold_all_sub_goals_of_proofn s f)
           acc tr.transf_subtasks)
      acc pn.proofn_transformations
  in
  f acc pn

MARCHE Claude's avatar
MARCHE Claude committed
392 393 394 395 396 397 398 399 400
let goal_iter_proof_attempt s f g =
  fold_all_sub_goals_of_proofn
    s
    (fun _ pn -> Hprover.iter
                 (fun _ pan ->
                  let pan = get_proof_attempt_node s pan in
                  f pan)
                 pn.proofn_attempts) () g

401 402 403
let fold_all_sub_goals_of_theory s f acc th =
  List.fold_left (fold_all_sub_goals_of_proofn s f) acc th.theory_goals

MARCHE Claude's avatar
MARCHE Claude committed
404
(*
Clément Fumex's avatar
Clément Fumex committed
405 406
let theory_iter_proofn s f th =
  fold_all_sub_goals_of_theory s (fun _ -> f) () th
MARCHE Claude's avatar
MARCHE Claude committed
407
*)
Clément Fumex's avatar
Clément Fumex committed
408 409

let theory_iter_proof_attempt s f th =
MARCHE Claude's avatar
MARCHE Claude committed
410 411
  fold_all_sub_goals_of_theory s
    (fun _ pn -> Hprover.iter (fun _ pan ->
412 413
                             let pan = get_proof_attempt_node s pan in
                             f pan)
MARCHE Claude's avatar
MARCHE Claude committed
414 415 416 417 418 419 420
         pn.proofn_attempts) () th

let file_iter_proof_attempt s f file =
  List.iter
    (theory_iter_proof_attempt s f)
    (file_theories file)

Clément Fumex's avatar
Clément Fumex committed
421

422 423 424



Sylvain Dailler's avatar
Sylvain Dailler committed
425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447
(**************)
(* Copy/Paste *)
(**************)

let get_any_parent s a =
  match a with
  | AFile _f -> None
  | ATh th  -> Some (AFile (theory_parent s th))
  | ATn tr  -> Some (APn (get_trans_parent s tr))
  | APn pn  ->
      (match (get_proofNode s pn).proofn_parent with
      | Theory th -> Some (ATh th)
      | Trans tr -> Some (ATn tr))
  | APa pa  ->
      Some (APn (get_proof_attempt_node s pa).parent)

(* True if bid is an ancestor of aid, false if not *)
let rec is_below s (aid: any) (bid: any) =
  aid = bid ||
  match (get_any_parent s aid) with
  | None     -> false
  | Some pid -> is_below s pid bid

Clément Fumex's avatar
Clément Fumex committed
448 449 450
open Format
open Ident

MARCHE Claude's avatar
MARCHE Claude committed
451 452 453
let print_proof_attempt fmt pa =
  fprintf fmt "%a tl=%d %a"
          Whyconf.print_prover pa.prover
454
          pa.limit.Call_provers.limit_time
MARCHE Claude's avatar
MARCHE Claude committed
455 456
          (Pp.print_option Call_provers.print_prover_result) pa.proof_state

457 458 459 460 461 462 463
let rec print_proof_node s (fmt: Format.formatter) p =
  let pn = get_proofNode s p in
  let parent = match pn.proofn_parent with
  | Theory t -> t.theory_name.id_string
  | Trans id -> (get_transfNode s id).transf_name
  in
  fprintf fmt
MARCHE Claude's avatar
MARCHE Claude committed
464
    "@[<hv 1> Goal %s;@ parent %s;@ sum %s;@ @[<hv 1>[%a]@]@ @[<hv 1>[%a]@]@]"
465 466 467
    pn.proofn_name.id_string parent
    (Opt.fold (fun _ a -> Termcode.string_of_checksum a) "None" pn.proofn_checksum)
    (Pp.print_list Pp.semi print_proof_attempt)
468
      (Hprover.fold (fun _key e l ->
469 470 471 472
                     let e = get_proof_attempt_node s e in
                     e :: l)
        pn.proofn_attempts [])
      (Pp.print_list Pp.semi (print_trans_node s)) pn.proofn_transformations
473 474 475

and print_trans_node s fmt id =
  let tn = get_transfNode s id in
476
  let args = get_transf_args s id in
477 478 479
  let name = tn.transf_name in
  let l = tn.transf_subtasks in
  let parent = (get_proofNode s tn.transf_parent).proofn_name.id_string in
Sylvain Dailler's avatar
Sylvain Dailler committed
480 481
  fprintf fmt "@[<hv 1> Trans %s;@ args %a;@ parent %s;@ [%a]@]"
    name (Pp.print_list Pp.colon pp_print_string) args parent
482 483 484 485 486 487 488 489 490 491 492 493
    (Pp.print_list Pp.semi (print_proof_node s)) l

let print_theory s fmt th : unit =
  fprintf fmt "@[<hv 2> Theory %s;@ [%a]@]" th.theory_name.Ident.id_string
    (Pp.print_list Pp.semi (fun fmt a -> print_proof_node s fmt a)) th.theory_goals

let print_file s fmt (file, thl) =
  fprintf fmt "@[<hv 2> File %s;@ [%a]@]" file.file_name
    (Pp.print_list Pp.semi (print_theory s)) thl

let print_s s fmt =
  fprintf fmt "@[%a@]" (Pp.print_list Pp.semi (print_file s))
Clément Fumex's avatar
Clément Fumex committed
494

495
let _print_session fmt s =
496
  let l = Hstr.fold (fun _ f acc -> (f,f.file_theories) :: acc) (get_files s) [] in
MARCHE Claude's avatar
MARCHE Claude committed
497
  fprintf fmt "%a@." (print_s s) l;;
Clément Fumex's avatar
Clément Fumex committed
498

499

Clément Fumex's avatar
Clément Fumex committed
500
let empty_session ?shape_version dir =
Clément Fumex's avatar
Clément Fumex committed
501 502 503 504
  let shape_version = match shape_version with
    | Some v -> v
    | None -> Termcode.current_shape_version
  in
505 506 507
  { proofAttempt_table = Hint.create 97;
    next_proofAttemptID = 0;
    proofNode_table = Hint.create 97;
Clément Fumex's avatar
Clément Fumex committed
508 509 510
    next_proofNodeID = 0;
    trans_table = Hint.create 97;
    next_transID = 0;
Clément Fumex's avatar
Clément Fumex committed
511
    session_dir = dir;
Clément Fumex's avatar
Clément Fumex committed
512 513 514
    session_files = Hstr.create 3;
    session_shape_version = shape_version;
    session_prover_ids = Hprover.create 7;
515 516
    session_raw_tasks = Hpn.create 97;
    session_tasks = Hpn.create 97;
517 518
    file_state = Hstr.create 3;
    th_state = Ident.Hid.create 7;
519 520
    tn_state = Htn.create 97;
    pn_state = Hpn.create 97;
Clément Fumex's avatar
Clément Fumex committed
521 522
  }

523 524 525
(**************************************************)
(* proof node/attempt/transformation manipulation *)
(**************************************************)
MARCHE Claude's avatar
MARCHE Claude committed
526

527 528
exception AlreadyExist

529 530
let add_proof_attempt session prover limit state obsolete edit parentID =
  let pn = get_proofNode session parentID in
531 532 533 534 535 536 537 538 539 540 541 542 543 544
  try
    let _ = Hprover.find pn.proofn_attempts prover in
    raise AlreadyExist
  with Not_found ->
    let id = gen_proofAttemptID session in
    let pa = { parent = parentID;
               prover = prover;
               limit = limit;
               proof_state = state;
               proof_obsolete = obsolete;
               proof_script = edit } in
    Hprover.add pn.proofn_attempts prover id;
    Hint.replace session.proofAttempt_table id pa;
    id
545

Sylvain Dailler's avatar
Sylvain Dailler committed
546
let graft_proof_attempt ?file (s : session) (id : proofNodeID) (pr : Whyconf.prover)
547
    ~limit =
548 549 550 551
  let pn = get_proofNode s id in
  try
    let id = Hprover.find pn.proofn_attempts pr in
    let pa = Hint.find s.proofAttempt_table id in
Sylvain Dailler's avatar
Sylvain Dailler committed
552 553
    let pa = { pa with limit = limit;
               proof_state = None;
554
               proof_obsolete = false} in
MARCHE Claude's avatar
MARCHE Claude committed
555
    (* Hprover.replace pn.proofn_attempts pr id; useless *)
556 557 558
    Hint.replace s.proofAttempt_table id pa;
    id
  with Not_found ->
Sylvain Dailler's avatar
Sylvain Dailler committed
559
    add_proof_attempt s pr limit None false file id
Clément Fumex's avatar
Clément Fumex committed
560

Clément Fumex's avatar
Clément Fumex committed
561

Clément Fumex's avatar
Clément Fumex committed
562
(* [mk_proof_node s n t p id] register in the session [s] a proof node
Clément Fumex's avatar
Clément Fumex committed
563
   of proofNodeID [id] of parent [p] of task [t] *)
MARCHE Claude's avatar
MARCHE Claude committed
564
let mk_proof_node ~version ~expl (s : session) (n : Ident.ident) (t : Task.task)
Clément Fumex's avatar
Clément Fumex committed
565
    (parent : proof_parent) (node_id : proofNodeID) =
566
  (* let tables = Args_wrapper.build_naming_tables t in *)
Clément Fumex's avatar
Clément Fumex committed
567
  let sum = Some (Termcode.task_checksum ~version t) in
MARCHE Claude's avatar
MARCHE Claude committed
568
  let shape = Termcode.t_shape_task ~version ~expl t in
Clément Fumex's avatar
Clément Fumex committed
569
  let pn = { proofn_name = n;
MARCHE Claude's avatar
MARCHE Claude committed
570
             proofn_expl = expl;
571
             (* proofn_table = Some tables; *)
Clément Fumex's avatar
Clément Fumex committed
572
             proofn_parent = parent;
573
             proofn_checksum = sum;
Clément Fumex's avatar
Clément Fumex committed
574
             proofn_shape = shape;
Clément Fumex's avatar
Clément Fumex committed
575
             proofn_attempts = Hprover.create 7;
Clément Fumex's avatar
Clément Fumex committed
576
             proofn_transformations = [] } in
577
  Hpn.add s.session_raw_tasks node_id t;
Clément Fumex's avatar
Clément Fumex committed
578
  Hint.add s.proofNode_table node_id pn
Clément Fumex's avatar
Clément Fumex committed
579

Clément Fumex's avatar
Clément Fumex committed
580
let mk_proof_node_no_task (s : session) (n : Ident.ident)
581
    (parent : proof_parent) (node_id : proofNodeID) sum shape proved =
582
  let pn = { proofn_name = n;
MARCHE Claude's avatar
MARCHE Claude committed
583
             proofn_expl = "";
584
             (* proofn_table = None; *)
585 586
             proofn_parent = parent;
             proofn_checksum = sum;
Clément Fumex's avatar
Clément Fumex committed
587
             proofn_shape = shape;
588
             proofn_attempts = Hprover.create 7;
Clément Fumex's avatar
Clément Fumex committed
589
             proofn_transformations = [] } in
590 591
  Hint.add s.proofNode_table node_id pn;
  Hint.add s.pn_state node_id proved
Clément Fumex's avatar
Clément Fumex committed
592

Sylvain Dailler's avatar
Sylvain Dailler committed
593 594 595 596 597 598 599 600 601 602 603 604 605 606
(* Detach a new proof to a proof_parent *)
let graft_detached_proof_on_parent s (pn: proofNodeID) (parent: proof_parent) =
  match parent with
  | Theory th ->
      th.theory_detached_goals <- th.theory_detached_goals @ [pn]
  | Trans tr_id ->
      let tr = get_transfNode s tr_id in
      tr.transf_detached_subtasks <- tr.transf_detached_subtasks @ [pn]

(* Intended as a feature to save a proof (also for testing detached stuff) *)
let copy_proof_node_as_detached (s: session) (pn_id: proofNodeID) =
  let pn = get_proofNode s pn_id in
  let new_pn_id = gen_proofNodeID s in
  let parent = pn.proofn_parent in
Sylvain Dailler's avatar
Sylvain Dailler committed
607 608 609
  let new_goal = Ident.id_register (Ident.id_clone pn.proofn_name) in
  let checksum = pn.proofn_checksum in
  let shape = pn.proofn_shape in
610
  let _: unit = mk_proof_node_no_task s new_goal parent new_pn_id checksum shape false in
Sylvain Dailler's avatar
Sylvain Dailler committed
611 612 613
  graft_detached_proof_on_parent s new_pn_id parent;
  new_pn_id

614
let _mk_proof_node_task (s : session) (t : Task.task)
Clément Fumex's avatar
Clément Fumex committed
615 616
    (parent : proof_parent) (node_id : proofNodeID) =
  let name,_,_ = Termcode.goal_expl_task ~root:false t in
Clément Fumex's avatar
Clément Fumex committed
617
  mk_proof_node ~version:s.session_shape_version s name t parent node_id
Clément Fumex's avatar
Clément Fumex committed
618

Sylvain Dailler's avatar
Sylvain Dailler committed
619 620
let mk_transf_proof_node (s : session) (parent_name : string)
    (tid : transID) (index : int) (t : Task.task) =
Clément Fumex's avatar
Clément Fumex committed
621
  let id = gen_proofNodeID s in
MARCHE Claude's avatar
MARCHE Claude committed
622
  let gid,expl,_ = Termcode.goal_expl_task ~root:false t in
Clément Fumex's avatar
Clément Fumex committed
623 624
  let goal_name = parent_name ^ "." ^ string_of_int index in
  let goal_name = Ident.id_register (Ident.id_derive goal_name gid) in
MARCHE Claude's avatar
MARCHE Claude committed
625 626
  mk_proof_node ~version:s.session_shape_version ~expl
                s goal_name t (Trans tid) id;
Clément Fumex's avatar
Clément Fumex committed
627 628
  id

Clément Fumex's avatar
Clément Fumex committed
629
let mk_transf_node (s : session) (id : proofNodeID) (node_id : transID)
630
    (name : string) (args : string list) ~(proved:bool) (pnl : proofNodeID list) =
Clément Fumex's avatar
Clément Fumex committed
631 632 633 634
  let pn = get_proofNode s id in
  let tn = { transf_name = name;
             transf_args = args;
             transf_subtasks = pnl;
Clément Fumex's avatar
Clément Fumex committed
635 636
             transf_parent = id;
             transf_detached_subtasks = [] } in
Clément Fumex's avatar
Clément Fumex committed
637
  Hint.add s.trans_table node_id tn;
638
  Htn.add s.tn_state node_id proved;
Clément Fumex's avatar
Clément Fumex committed
639 640
  pn.proofn_transformations <- node_id::pn.proofn_transformations

641
exception BadCopyDetached of string
Sylvain Dailler's avatar
Sylvain Dailler committed
642 643 644 645 646 647 648 649 650

let rec copy_structure ~notification s from_any to_any : unit =
  match from_any, to_any with
  | APn from_id, APn to_id ->
    let transformations = get_transformations s from_id in
    let new_transformations =
      List.map (fun x ->
        let tr_id = gen_transID s in
        let old_tr = get_transfNode s x in
651 652
        mk_transf_node s to_id tr_id old_tr.transf_name old_tr.transf_args
                       ~proved:false [];
Sylvain Dailler's avatar
Sylvain Dailler committed
653 654 655 656 657 658
        notification ~parent:to_any (ATn tr_id);
        copy_structure ~notification s (ATn x) (ATn tr_id);
        tr_id) transformations in
    (get_proofNode s to_id).proofn_transformations <- new_transformations;
    Hprover.iter (fun _k old_pa ->
      let old_pa = get_proof_attempt_node s old_pa in
Sylvain Dailler's avatar
Sylvain Dailler committed
659 660 661 662
      let pa_id =
        add_proof_attempt s old_pa.prover old_pa.limit None true None to_id in
      notification ~parent:to_any (APa pa_id))
      (get_proofNode s from_id).proofn_attempts
Sylvain Dailler's avatar
Sylvain Dailler committed
663 664 665 666 667 668 669 670
  | ATn from_tn, ATn to_tn ->
    let sub_tasks = get_sub_tasks s from_tn in
    let new_sub_tasks =
      List.map (fun old_pn_id ->
        let old_pn = get_proofNode s old_pn_id in
        let pn_id = gen_proofNodeID s in
        let new_id = Ident.id_register (Ident.id_clone old_pn.proofn_name) in
        mk_proof_node_no_task s new_id (Trans to_tn)
671
          pn_id old_pn.proofn_checksum old_pn.proofn_shape false;
Sylvain Dailler's avatar
Sylvain Dailler committed
672 673 674 675 676
        notification ~parent:to_any (APn pn_id);
        copy_structure ~notification s (APn old_pn_id) (APn pn_id);
        pn_id) sub_tasks in
    let tr = get_transfNode s to_tn in
    tr.transf_detached_subtasks <- new_sub_tasks
677
  | _ -> raise (BadCopyDetached "copy_structure")
Sylvain Dailler's avatar
Sylvain Dailler committed
678

Clément Fumex's avatar
Clément Fumex committed
679
let graft_transf  (s : session) (id : proofNodeID) (name : string)
680
    (args : string list) (tl : Task.task list) =
Clément Fumex's avatar
Clément Fumex committed
681
  let tid = gen_transID s in
Clément Fumex's avatar
Clément Fumex committed
682 683
  let parent_name = (get_proofNode s id).proofn_name.Ident.id_string in
  let sub_tasks = List.mapi (mk_transf_proof_node s parent_name tid) tl in
684 685
  let proved = sub_tasks = [] in
  mk_transf_node s id tid name args ~proved sub_tasks;
Clément Fumex's avatar
Clément Fumex committed
686
  tid
Clément Fumex's avatar
Clément Fumex committed
687

Clément Fumex's avatar
Clément Fumex committed
688

689
let update_proof_attempt ?(obsolete=false) notifier s id pr st =
Sylvain Dailler's avatar
Sylvain Dailler committed
690 691
  try
    let n = get_proofNode s id in
692 693
    let paid = Hprover.find n.proofn_attempts pr in
    let pa = get_proof_attempt_node s paid in
Sylvain Dailler's avatar
Sylvain Dailler committed
694
    pa.proof_state <- Some st;
695 696
    pa.proof_obsolete <- obsolete;
    notifier (APa paid)
Sylvain Dailler's avatar
Sylvain Dailler committed
697
  with
698
  | BadID when not (Debug.test_flag debug_stack_trace) -> assert false
Clément Fumex's avatar
Clément Fumex committed
699

700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758

(* proved status *)


let tn_proved s tid = Htn.find_def s.tn_state false tid
let pn_proved s pid = Hpn.find_def s.pn_state false pid
let th_proved s th  =
  try Hid.find s.th_state th.theory_name
  with Not_found ->
    let b = theory_goals th = [] in
    Hid.add s.th_state th.theory_name b;
    b

let file_proved s f =
  try Hstr.find s.file_state f.file_name
  with Not_found ->
    let b = f.file_theories = [] in
    Hstr.add s.file_state f.file_name b;
    b

let any_proved s any : bool =
  match any with
  | AFile file -> file_proved s file
  | ATh th -> th_proved s th
  | ATn tn -> tn_proved s tn
  | APn pn -> pn_proved s pn
  | APa pa ->
      begin
        let pa = get_proof_attempt_node s pa in
        match pa.proof_state with
        | None -> false
        | Some pa ->
          begin
            match pa.Call_provers.pr_answer with
            | Call_provers.Valid -> true
            | _ -> false
          end
      end




(* status update *)


type notifier = any -> unit

let pa_ok pa =
  not pa.proof_obsolete &&
    match pa.proof_state
    with
    | Some { Call_provers.pr_answer = Call_provers.Valid} -> true
    | _ -> false

(* [update_goal_node c id] update the proof status of node id
   update is propagated to parents when required. *)

let update_file_node notification s f =
  let ths = f.file_theories in
759 760 761 762 763 764 765 766 767 768
  if ths = [] then
    (* No updates if ths is empty *)
    ()
  else
    let proved = List.for_all (th_proved s) ths in
    if proved <> file_proved s f then
      begin
        Stdlib.Hstr.replace s.file_state f.file_name proved;
        notification (AFile f);
      end
769 770 771 772 773 774

let update_theory_node notification s th =
  let goals = theory_goals th in
  let proved = List.for_all (pn_proved s) goals in
  if proved <> th_proved s th then
    begin
775 776
      Debug.dprintf debug "[Session] setting theory %s to status proved=%b@."
                    th.theory_name.Ident.id_string proved;
777 778 779 780
      Hid.replace s.th_state (theory_name th) proved;
      notification (ATh th);
      try let p = theory_parent s th in
          update_file_node notification s p
781 782 783
      with Not_found when not (Debug.test_flag Debug.stack_trace) ->
        Format.eprintf "[Fatal] Session_itp.update_theory_node: parent missing@.";
        assert false
784 785 786 787 788 789 790 791
    end

let rec update_goal_node notification s id =
  let tr_list = get_transformations s id in
  let pa_list = get_proof_attempts s id in
  let proved = List.exists (tn_proved s) tr_list || List.exists pa_ok pa_list in
  if proved <> pn_proved s id then
    begin
792 793
      Debug.dprintf debug "[Session] setting goal node %a to status proved=%b@."
                    print_proofNodeID id proved;
794 795 796 797 798
      Hpn.replace s.pn_state id proved;
      notification (APn id);
      match get_proof_parent s id with
      | Trans trans_id -> update_trans_node notification s trans_id
      | Theory th -> update_theory_node notification s th
799 800 801 802
      | exception Not_found when not (Debug.test_flag Debug.stack_trace) ->
                  Format.eprintf "Session_itp.update_goal_node: parent missing@.";
                  Printexc.print_backtrace stderr;
                  assert false
803 804 805 806 807 808 809 810 811 812
    end

and update_trans_node notification s trid =
  let proof_list = get_sub_tasks s trid in
  let proved = List.for_all (pn_proved s) proof_list in
  if proved <> tn_proved s trid then
    begin
      Htn.replace s.tn_state trid proved;
      notification (ATn trid);
      update_goal_node notification s (get_trans_parent s trid)
813 814 815 816 817 818 819
    end;
  (* Specific case in which we *always* need to call notification because
     transformation are created with proved=true when they don't have subtasks.
     This means they won't be updated in the next if so the parent goal will
     never get updated. *)
  if proof_list = [] then
    update_goal_node notification s (get_trans_parent s trid)
820 821 822 823 824 825 826 827 828 829 830


let update_any_node s notification a =
  match a with
  | APn id -> update_goal_node notification s id
  | ATn id -> update_trans_node notification s id
  | APa _ -> assert false
  | AFile f -> update_file_node notification s f
  | ATh th -> update_theory_node notification s th


831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846
let change_prover notification s id opr npr =
  try
    let n = get_proofNode s id in
    let paid = Hprover.find n.proofn_attempts opr in
    let pa = get_proof_attempt_node s paid in
    Hprover.remove n.proofn_attempts opr;
    pa.prover <- npr;
    pa.proof_obsolete <- true;
    Hprover.add n.proofn_attempts npr paid;
    update_goal_node notification s id
  with
  | Not_found -> ()
  | BadID when not (Debug.test_flag debug_stack_trace) -> assert false



847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885
(* Remove elements of the session tree *)

let remove_transformation (s : session) (id : transID) =
  let nt = get_transfNode s id in
  Hint.remove s.trans_table id;
  let pn = get_proofNode s nt.transf_parent in
  let trans_up = List.filter (fun tid -> tid != id) pn.proofn_transformations in
  pn.proofn_transformations <- trans_up

let remove_proof_attempt (s : session) (id : proofNodeID)
    (prover : Whyconf.prover) =
  let pn = get_proofNode s id in
  let pa = Hprover.find pn.proofn_attempts prover in
  Hprover.remove pn.proofn_attempts prover;
  Hint.remove s.proofAttempt_table pa

let remove_proof_attempt_pa s (id: proofAttemptID) =
  let pa = get_proof_attempt_node s id in
  let pn = pa.parent in
  let prover = pa.prover in
  remove_proof_attempt s pn prover

let mark_obsolete s (id: proofAttemptID) =
  let pa = get_proof_attempt_node s id in
  pa.proof_obsolete <- true


exception RemoveError

let remove_subtree ~(notification:notifier) ~(removed:notifier) s (n: any) =
  let remove (n: any) =
    match n with
    | ATn tn -> remove_transformation s tn
    | APa pa -> remove_proof_attempt_pa s pa
    | AFile f -> Hstr.remove s.session_files f.file_name
    | APn pn -> Hint.remove s.proofNode_table pn
    | ATh _th -> (* Not in any table *)  ()
  in
  match n with
886
  | (AFile _ | APn _ | ATh _) when not (is_detached s n) ->
887 888 889
               raise RemoveError
  | _ ->
     let p = get_any_parent s n in
Sylvain Dailler's avatar
Sylvain Dailler committed
890
     fold_all_any s (fun _ x -> remove x; removed x) () n;
891 892
     Opt.iter (update_any_node s notification) p

Clément Fumex's avatar
Clément Fumex committed
893 894 895 896
(****************************)
(*     session opening      *)
(****************************)

Clément Fumex's avatar
Clément Fumex committed
897 898
let db_filename = "why3session.xml"
let shape_filename = "why3shapes"
Clément Fumex's avatar
Clément Fumex committed
899
let compressed_shape_filename = "why3shapes.gz"
Clément Fumex's avatar
Clément Fumex committed
900 901
let session_dir_for_save = ref "."

Clément Fumex's avatar
Clément Fumex committed
902 903 904 905 906 907
exception LoadError of Xml.element * string
exception SessionFileError of string

let bool_attribute field r def =
  try
    match List.assoc field r.Xml.attributes with
Clément Fumex's avatar
Clément Fumex committed
908 909 910
    | "true" -> true
    | "false" -> false
    | _ -> assert false
Clément Fumex's avatar
Clément Fumex committed
911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935
  with Not_found -> def

let int_attribute_def field r def =
  try
    int_of_string (List.assoc field r.Xml.attributes)
  with Not_found | Invalid_argument _ -> def

let string_attribute_def field r def=
  try
    List.assoc field r.Xml.attributes
  with Not_found -> def

let string_attribute_opt field r =
  try
    Some (List.assoc field r.Xml.attributes)
  with Not_found -> None

let string_attribute field r =
  try
    List.assoc field r.Xml.attributes
  with Not_found ->
    eprintf "[Error] missing required attribute '%s' from element '%s'@."
      field r.Xml.name;
    assert false

936 937 938 939 940 941 942 943 944 945
let default_unknown_result =
     {
       Call_provers.pr_answer = Call_provers.Failure "";
       Call_provers.pr_time = 0.0;
       Call_provers.pr_output = "";
       Call_provers.pr_status = Unix.WEXITED 0;
       Call_provers.pr_steps = -1;
       Call_provers.pr_model = Model_parser.default_model;
     }

Clément Fumex's avatar
Clément Fumex committed
946 947
let load_result r =
  match r.Xml.name with
Clément Fumex's avatar
Clément Fumex committed
948
  | "result" ->
949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982
     let status = string_attribute "status" r in
     let answer =
       match status with
       | "valid" -> Call_provers.Valid
       | "invalid" -> Call_provers.Invalid
       | "unknown" -> Call_provers.Unknown ("", None)
       | "timeout" -> Call_provers.Timeout
       | "outofmemory" -> Call_provers.OutOfMemory
       | "failure" -> Call_provers.Failure ""
       | "highfailure" -> Call_provers.HighFailure
       | "steplimitexceeded" -> Call_provers.StepLimitExceeded
       | "stepslimitexceeded" -> Call_provers.StepLimitExceeded
       | s ->
          Warning.emit
            "[Warning] Session.load_result: unexpected status '%s'@." s;
          Call_provers.HighFailure
     in
     let time =
       try float_of_string (List.assoc "time" r.Xml.attributes)
       with Not_found -> 0.0
     in
     let steps =
       try int_of_string (List.assoc "steps" r.Xml.attributes)
       with Not_found -> -1
     in
     {
       Call_provers.pr_answer = answer;
       Call_provers.pr_time = time;
       Call_provers.pr_output = "";
       Call_provers.pr_status = Unix.WEXITED 0;
       Call_provers.pr_steps = steps;
       Call_provers.pr_model = Model_parser.default_model;
     }
  | "undone" | "unedited" -> default_unknown_result
Clément Fumex's avatar
Clément Fumex committed
983 984 985
  | s ->
    Warning.emit "[Warning] Session.load_result: unexpected element '%s'@."
      s;
986
    default_unknown_result
Clément Fumex's avatar
Clément Fumex committed
987 988 989 990 991 992 993 994

let load_option attr g =
  try Some (List.assoc attr g.Xml.attributes)
  with Not_found -> None

let load_ident elt =
  let name = string_attribute "name" elt in
  let label = List.fold_left
Clément Fumex's avatar
Clément Fumex committed
995 996 997 998 999 1000 1001
      (fun acc label ->
         match label with
         | {Xml.name = "label"} ->
           let lab = string_attribute "name" label in
           Ident.Slab.add (Ident.create_label lab) acc
         | _ -> acc
      ) Ident.Slab.empty elt.Xml.elements in
Clément Fumex's avatar
Clément Fumex committed
1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014
  let preid =
    try
      let load_exn attr g = List.assoc attr g.Xml.attributes in
      let file = load_exn "locfile" elt in
      let lnum =  int_of_string (load_exn "loclnum" elt) in
      let cnumb = int_of_string (load_exn "loccnumb" elt) in
      let cnume = int_of_string (load_exn "loccnume" elt) in
      let pos = Loc.user_position file lnum cnumb cnume in
      Ident.id_user ~label name pos
    with Not_found | Invalid_argument _ ->
      Ident.id_fresh ~label name in
  Ident.id_register preid

Clément Fumex's avatar
Clément Fumex committed
1015 1016 1017 1018
(* [load_goal s op p g id] loads the goal of parent [p] from the xml
   [g] of nodeID [id] into the session [s] *)
let rec load_goal session old_provers parent g id =
  match g.Xml.name with
Clément Fumex's avatar
Clément Fumex committed
1019 1020
  | "goal" ->
    let gname = load_ident g in
1021 1022 1023
    (* even if sum and shape are not in the XML file but in the shape
  file, these attributes are there thanks to ~fixattr on
  Xml.from_file *)
1024 1025
    let csum = string_attribute_opt "sum" g in
    let sum = Opt.map Termcode.checksum_of_string csum in
Clément Fumex's avatar
Clément Fumex committed
1026 1027 1028 1029
    let shape =
      try Termcode.shape_of_string (List.assoc "shape" g.Xml.attributes)
      with Not_found -> Termcode.shape_of_string ""
    in
1030 1031
    let proved = bool_attribute "proved" g false in
    mk_proof_node_no_task session gname parent id sum shape proved;
Clément Fumex's avatar
Clément Fumex committed
1032 1033 1034 1035 1036
    List.iter (load_proof_or_transf session old_provers id) g.Xml.elements;
  | "label" -> ()
  | s ->
    Warning.emit "[Warning] Session.load_goal: unexpected element '%s'@." s

Clément Fumex's avatar
Clément Fumex committed
1037
(* [load_proof_or_transf s op pid a] load either a proof attempt or a
Clément Fumex's avatar
Clément Fumex committed
1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049
   transformation of parent id [pid] from the xml [a] into the session
   [s] *)
and load_proof_or_transf session old_provers pid a =
  match a.Xml.name with
    | "proof" ->
      begin
        let prover = string_attribute "prover" a in
        try
          let prover = int_of_string prover in
          let (p,timelimit,steplimit,memlimit) = Mint.find prover old_provers in
          let res = match a.Xml.elements with
            | [r] -> load_result r
1050
            | [] -> default_unknown_result
Clément Fumex's avatar
Clément Fumex committed
1051 1052 1053 1054 1055 1056 1057 1058 1059 1060
            | _ ->
              Warning.emit "[Error] Too many result elements@.";
              raise (LoadError (a,"too many result elements"))
          in
          let edit = load_option "edited" a in
          let edit = match edit with None | Some "" -> None | _ -> edit in
          let obsolete = bool_attribute "obsolete" a false in
          let timelimit = int_attribute_def "timelimit" a timelimit in
	  let steplimit = int_attribute_def "steplimit" a steplimit in
          let memlimit = int_attribute_def "memlimit" a memlimit in
Clément Fumex's avatar
Clément Fumex committed
1061 1062 1063 1064
          let limit = { Call_provers.limit_time  = timelimit;
                        Call_provers.limit_mem   = memlimit;
                        Call_provers.limit_steps = steplimit; }
          in
1065
          ignore(add_proof_attempt session p limit (Some res) obsolete edit pid)
Clément Fumex's avatar
Clément Fumex committed
1066 1067 1068 1069 1070
        with Failure _ | Not_found ->
          Warning.emit "[Error] prover id not listed in header '%s'@." prover;
          raise (LoadError (a,"prover not listing in header"))
      end
    | "transf" ->
1071 1072 1073 1074 1075 1076 1077 1078
      let trname = string_attribute "name" a in
      let rec get_args id =
        match string_attribute_opt ("arg"^(string_of_int id)) a with
        | Some arg -> arg :: (get_args (id+1))
        | None -> []
      in
      let args = get_args 1 in
      let tid = gen_transID session in
1079
      let proved = bool_attribute "proved" a false in
1080 1081 1082
      let subtasks_ids =
        List.rev (List.fold_left
                    (fun goals th ->
1083 1084 1085
                       match th.Xml.name with
                       | "goal" -> (gen_proofNodeID session) :: goals
                       | _ -> goals) [] a.Xml.elements)
1086
      in
1087
      mk_transf_node session pid tid trname args ~proved subtasks_ids;
1088 1089 1090
      List.iter2
        (load_goal session old_provers (Trans tid))
        a.Xml.elements subtasks_ids;
Clément Fumex's avatar
Clément Fumex committed
1091 1092
    | "metas" -> ()
    | "label" -> ()
Clément Fumex's avatar
Clément Fumex committed
1093
    | s ->
1094 1095 1096
      Warning.emit
        "[Warning] Session.load_proof_or_transf: unexpected element '%s'@."
        s
Clément Fumex's avatar
Clément Fumex committed
1097

1098
let load_theory session parent_name old_provers acc th =
Clément Fumex's avatar
Clément Fumex committed
1099 1100 1101 1102 1103
  match th.Xml.name with
  | "theory" ->
    let thname = load_ident th in
    let csum = string_attribute_opt "sum" th in
    let checksum = Opt.map Termcode.checksum_of_string csum in
Clément Fumex's avatar
Clément Fumex committed
1104
    let goals = List.rev (List.fold_left (fun goals th -> match th.Xml.name with