ltl2tgba.cc 16.1 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
// Copyright (C) 2003, 2004  Laboratoire d'Informatique de Paris 6 (LIP6),
// dpartement Systmes Rpartis Coopratifs (SRC), Universit Pierre
// et Marie Curie.
//
// This file is part of Spot, a model checking library.
//
// Spot is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// Spot is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
// License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Spot; see the file COPYING.  If not, write to the Free
// Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
// 02111-1307, USA.

22
23
#include <iostream>
#include <cassert>
24
25
#include <fstream>
#include <string>
26
#include "ltlvisit/destroy.hh"
27
#include "ltlvisit/reduce.hh"
28
#include "ltlvisit/tostring.hh"
29
#include "ltlvisit/apcollect.hh"
30
31
#include "ltlast/allnodes.hh"
#include "ltlparse/public.hh"
32
#include "tgbaalgos/ltl2tgba_lacim.hh"
33
#include "tgbaalgos/ltl2tgba_fm.hh"
34
#include "tgba/bddprint.hh"
35
#include "tgbaalgos/dotty.hh"
36
#include "tgbaalgos/lbtt.hh"
37
#include "tgba/tgbatba.hh"
38
#include "tgbaalgos/magic.hh"
39
40
#include "tgbaalgos/gtec/gtec.hh"
#include "tgbaalgos/gtec/ce.hh"
41
#include "tgbaparse/public.hh"
42
#include "tgbaalgos/dupexp.hh"
43
#include "tgbaalgos/neverclaim.hh"
44
45
#include "tgbaalgos/reductgba_sim.hh"

46
47
48
void
syntax(char* prog)
{
Alexandre Duret-Lutz's avatar
Alexandre Duret-Lutz committed
49
  std::cerr << "Usage: "<< prog << " [OPTIONS...] formula" << std::endl
50
            << "       "<< prog << " -F [OPTIONS...] file" << std::endl
51
            << "       "<< prog << " -X [OPTIONS...] file" << std::endl
Alexandre Duret-Lutz's avatar
spacing    
Alexandre Duret-Lutz committed
52
	    << std::endl
Alexandre Duret-Lutz's avatar
Alexandre Duret-Lutz committed
53
	    << "Options:" << std::endl
martinez's avatar
martinez committed
54
	    << "  -a    display the acceptance_conditions BDD, not the "
55
	    << "reachability graph"
56
	    << std::endl
martinez's avatar
martinez committed
57
58
59
60
	    << "  -A    same as -a, but as a set" << std::endl
	    << "  -d    turn on traces during parsing" << std::endl
	    << "  -D    degeneralize the automaton" << std::endl
	    << "  -e    emptiness-check (Couvreur), expect and compute "
61
	    << "a counter-example" << std::endl
martinez's avatar
martinez committed
62
	    << "  -e2   emptiness-check (Couvreur variant), expect and compute "
63
	    << "a counter-example" << std::endl
martinez's avatar
martinez committed
64
	    << "  -E    emptiness-check (Couvreur), expect no counter-example "
65
	    << std::endl
martinez's avatar
martinez committed
66
	    << "  -E2   emptiness-check (Couvreur variant), expect no "
67
	    << "counter-example " << std::endl
martinez's avatar
martinez committed
68
69
70
71
72
73
74
75
            << "  -f    use Couvreur's FM algorithm for translation"
	    << std::endl
            << "  -F    read the formula from the file" << std::endl
            << "  -L    fair-loop approximation (implies -f)" << std::endl
	    << "  -m    magic-search (implies -D), expect a counter-example"
	    << std::endl
	    << "  -M    magic-search (implies -D), expect no counter-example"
	    << std::endl
martinez's avatar
martinez committed
76
77
78
79
	    << "  -n    same as -m, but display more counter-examples"
	    << std::endl
	    << "  -N    display the never clain for Spin "
	    << "(implies -D)" << std::endl
martinez's avatar
martinez committed
80
81
            << "  -p    branching postponement (implies -f)" << std::endl
	    << "  -r    display the relation BDD, not the reachability graph"
82
	    << std::endl
martinez's avatar
martinez committed
83
84
	    << "  -r1   reduce formula using basic rewriting" << std::endl
	    << "  -r2   reduce formula using class of eventuality and "
85
	    << "and universality" << std::endl
martinez's avatar
martinez committed
86
	    << "  -r3   reduce formula using implication between "
87
	    << "sub-formulae" << std::endl
martinez's avatar
martinez committed
88
89
90
	    << "  -r4   reduce formula using all rules" << std::endl
	    << "  -rd   display the reduce formula" << std::endl
	    << "  -R    same as -r, but as a set" << std::endl
martinez's avatar
martinez committed
91
	    << "  -R1q  use direct simulation to merge some state "
martinez's avatar
martinez committed
92
	    << "(use -L for more reduction)"
93
	    << std::endl
martinez's avatar
martinez committed
94
	    << "  -R1t  use direct simulation to remove some transition "
martinez's avatar
martinez committed
95
	    << "(use -L for more reduction)"
96
	    << std::endl
martinez's avatar
martinez committed
97
98
99
100
101
102
	    << "  -R2q  use delayed simulation to merge some state "
	    << "(the automaton must be degeneralised)"
	    << std::endl
	    << "  -R2t  use delayed simulation to remove some transition "
	    << "(the automaton must be degeneralised)"
	    << std::endl
martinez's avatar
martinez committed
103
	    << "  -R3   use SCC to reduce the automata"
104
	    << std::endl
martinez's avatar
martinez committed
105
	    << "  -Rd   display the simulation relation"
106
	    << std::endl
martinez's avatar
martinez committed
107
	    << "  -RD   display the parity game (dot format)"
108
	    << std::endl
martinez's avatar
martinez committed
109
	    << "  -s    convert to explicit automata, and number states "
110
	    << "in DFS order" << std::endl
martinez's avatar
martinez committed
111
	    << "  -S    convert to explicit automata, and number states "
112
	    << "in BFS order" << std::endl
martinez's avatar
martinez committed
113
	    << "  -t    display reachable states in LBTT's format" << std::endl
114
115
            << "  -U[PROPS]  consider atomic properties PROPS as exclusive "
	    << "events (implies -f)" << std::endl
martinez's avatar
martinez committed
116
117
118
	    << "  -v    display the BDD variables used by the automaton"
	    << std::endl
            << "  -x    try to produce a more deterministic automata "
119
	    << "(implies -f)" << std::endl
martinez's avatar
martinez committed
120
	    << "  -X    do not compute an automaton, read it from a file"
121
	    << std::endl
martinez's avatar
martinez committed
122
	    << "  -y    do not merge states with same symbolic representation "
123
	    << "(implies -f)" << std::endl;
124
125
126
127
128
129
130
131
  exit(2);
}

int
main(int argc, char** argv)
{
  int exit_code = 0;

132
  bool debug_opt = false;
133
  bool degeneralize_opt = false;
134
  bool fm_opt = false;
135
  bool fm_exprop_opt = false;
136
  bool fm_symb_merge_opt = true;
137
  bool file_opt = false;
138
  int output = 0;
139
  int formula_index = 0;
140
  enum { None, Couvreur, Couvreur2, MagicSearch } echeck = None;
141
  enum { NoneDup, BFS, DFS } dupexp = NoneDup;
142
143
  bool magic_many = false;
  bool expect_counter_example = false;
144
  bool from_file = false;
145
  int reduc_aut = spot::Reduce_None;
146
  int redopt = spot::ltl::Reduce_None;
147
148
  bool display_reduce_form = false;
  bool display_rel_sim = false;
149
  bool display_parity_game = false;
150
  bool post_branching = false;
151
  bool fair_loop_approx = false;
152
153
  spot::ltl::environment& env(spot::ltl::default_environment::instance());
  spot::ltl::atomic_prop_set* unobservables = 0;
154

155
  for (;;)
156
    {
157
      if (argc < formula_index + 2)
158
	syntax(argv[0]);
159
160
161

      ++formula_index;

162
163
164
165
166
167
168
169
170
      if (!strcmp(argv[formula_index], "-a"))
	{
	  output = 2;
	}
      else if (!strcmp(argv[formula_index], "-A"))
	{
	  output = 4;
	}
      else if (!strcmp(argv[formula_index], "-d"))
171
172
173
	{
	  debug_opt = true;
	}
174
175
176
177
      else if (!strcmp(argv[formula_index], "-D"))
	{
	  degeneralize_opt = true;
	}
178
179
180
181
182
183
      else if (!strcmp(argv[formula_index], "-e"))
	{
	  echeck = Couvreur;
	  expect_counter_example = true;
	  output = -1;
	}
184
185
186
187
188
189
      else if (!strcmp(argv[formula_index], "-e2"))
	{
	  echeck = Couvreur2;
	  expect_counter_example = true;
	  output = -1;
	}
190
191
192
193
194
195
      else if (!strcmp(argv[formula_index], "-E"))
	{
	  echeck = Couvreur;
	  expect_counter_example = false;
	  output = -1;
	}
196
197
198
199
200
201
      else if (!strcmp(argv[formula_index], "-E2"))
	{
	  echeck = Couvreur2;
	  expect_counter_example = false;
	  output = -1;
	}
202
203
204
205
206
207
208
209
      else if (!strcmp(argv[formula_index], "-f"))
	{
	  fm_opt = true;
	}
      else if (!strcmp(argv[formula_index], "-F"))
	{
	  file_opt = true;
	}
210
211
212
213
214
      else if (!strcmp(argv[formula_index], "-L"))
	{
	  fair_loop_approx = true;
	  fm_opt = true;
	}
martinez's avatar
martinez committed
215
      else if (!strcmp(argv[formula_index], "-m"))
martinez's avatar
martinez committed
216
	{
martinez's avatar
martinez committed
217
	  echeck = MagicSearch;
martinez's avatar
martinez committed
218
219
220
221
	  degeneralize_opt = true;
	  expect_counter_example = true;
	  output = -1;
	}
martinez's avatar
martinez committed
222
      else if (!strcmp(argv[formula_index], "-M"))
223
224
225
	{
	  echeck = MagicSearch;
	  degeneralize_opt = true;
martinez's avatar
martinez committed
226
	  expect_counter_example = false;
227
	  output = -1;
martinez's avatar
martinez committed
228
	}
martinez's avatar
martinez committed
229
230
      else if (!strcmp(argv[formula_index], "-n"))
	{
231
	  echeck = MagicSearch;
martinez's avatar
martinez committed
232
233
234
235
236
237
238
239
240
241
	  degeneralize_opt = true;
	  expect_counter_example = true;
	  output = -1;
	  magic_many = true;
	}
      else if (!strcmp(argv[formula_index], "-N"))
	{
	  degeneralize_opt = true;
	  output = 8;
	}
242
243
244
245
246
      else if (!strcmp(argv[formula_index], "-p"))
	{
	  post_branching = true;
	  fm_opt = true;
	}
247
248
      else if (!strcmp(argv[formula_index], "-r"))
	{
249
250
	  output = 1;
	}
251
252
253
254
255
256
      else if (!strcmp(argv[formula_index], "-r1"))
	{
	  redopt |= spot::ltl::Reduce_Basics;
	}
      else if (!strcmp(argv[formula_index], "-r2"))
	{
257
	  redopt |= spot::ltl::Reduce_Eventuality_And_Universality;
258
259
260
	}
      else if (!strcmp(argv[formula_index], "-r3"))
	{
261
	  redopt |= spot::ltl::Reduce_Syntactic_Implications;
262
263
264
265
266
	}
      else if (!strcmp(argv[formula_index], "-r4"))
	{
	  redopt |= spot::ltl::Reduce_All;
	}
267
268
269
      else if (!strcmp(argv[formula_index], "-R"))
	{
	  output = 3;
270
	}
martinez's avatar
martinez committed
271
272
273
274
275
276
277
278
279
      else if (!strcmp(argv[formula_index], "-R1q"))
	{
	  reduc_aut |= spot::Reduce_quotient_Dir_Sim;
	}
      else if (!strcmp(argv[formula_index], "-R1t"))
	{
	  reduc_aut |= spot::Reduce_transition_Dir_Sim;
	}
      else if (!strcmp(argv[formula_index], "-R2q"))
280
	{
martinez's avatar
martinez committed
281
	  reduc_aut |= spot::Reduce_quotient_Del_Sim;
282
	}
martinez's avatar
martinez committed
283
      else if (!strcmp(argv[formula_index], "-R2t"))
284
	{
martinez's avatar
martinez committed
285
	  reduc_aut |= spot::Reduce_transition_Del_Sim;
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
	}
      else if (!strcmp(argv[formula_index], "-R3"))
	{
	  reduc_aut |= spot::Reduce_Scc;
	}
      else if (!strcmp(argv[formula_index], "-rd"))
	{
	  display_reduce_form = true;
	}
      else if (!strcmp(argv[formula_index], "-Rd"))
	{
	  display_rel_sim = true;
	}
      else if (!strcmp(argv[formula_index], "-RD"))
	{
	  display_parity_game = true;
	}
303
304
305
306
307
308
309
310
      else if (!strcmp(argv[formula_index], "-s"))
	{
	  dupexp = DFS;
	}
      else if (!strcmp(argv[formula_index], "-S"))
	{
	  dupexp = BFS;
	}
311
312
313
314
      else if (!strcmp(argv[formula_index], "-t"))
	{
	  output = 6;
	}
315
316
317
318
319
      else if (!strncmp(argv[formula_index], "-U", 2))
	{
	  unobservables = new spot::ltl::atomic_prop_set;
	  fm_opt = true;
	  // Parse -U's argument.
320
	  const char* tok = strtok(argv[formula_index] + 2, ", \t;");
321
322
323
324
	  while (tok)
	    {
	      unobservables->insert
		(static_cast<spot::ltl::atomic_prop*>(env.require(tok)));
325
	      tok = strtok(0, ", \t;");
326
327
	    }
	}
328
329
330
331
      else if (!strcmp(argv[formula_index], "-v"))
	{
	  output = 5;
	}
332
333
334
335
336
      else if (!strcmp(argv[formula_index], "-x"))
	{
	  fm_opt = true;
	  fm_exprop_opt = true;
	}
337
338
339
340
      else if (!strcmp(argv[formula_index], "-X"))
	{
	  from_file = true;
	}
341
342
343
344
345
      else if (!strcmp(argv[formula_index], "-y"))
	{
	  fm_opt = true;
	  fm_symb_merge_opt = false;
	}
346
347
348
349
      else
	{
	  break;
	}
350
351
    }

352
353
354
355
  std::string input;

  if (file_opt)
    {
356
      if (strcmp(argv[formula_index], "-"))
357
	{
358
	  std::ifstream fin(argv[formula_index]);
359
	  if (!fin)
360
361
362
363
	    {
	      std::cerr << "Cannot open " << argv[formula_index] << std::endl;
	      exit(2);
	    }
364

365
	  if (!std::getline(fin, input, '\0'))
366
367
368
369
370
371
	    {
	      std::cerr << "Cannot read " << argv[formula_index] << std::endl;
	      exit(2);
	    }
	}
      else
372
	{
373
	  std::getline(std::cin, input, '\0');
374
375
376
377
378
379
380
	}
    }
  else
    {
      input = argv[formula_index];
    }

381
  spot::bdd_dict* dict = new spot::bdd_dict();
382
383
384
385
386
387
388
389
390

  spot::ltl::formula* f = 0;
  if (!from_file)
    {
      spot::ltl::parse_error_list pel;
      f = spot::ltl::parse(input, pel, env, debug_opt);
      exit_code = spot::ltl::format_parse_errors(std::cerr, input, pel);
    }
  if (f || from_file)
391
    {
392
393
394
395
      spot::tgba_bdd_concrete* concrete = 0;
      spot::tgba* to_free = 0;
      spot::tgba* a = 0;

396
397
398
      if (from_file)
	{
	  spot::tgba_parse_error_list pel;
399
400
	  spot::tgba_explicit* e;
	  to_free = a = e = spot::tgba_parse(input, pel, dict, env, debug_opt);
401
402
	  if (spot::format_tgba_parse_errors(std::cerr, pel))
	    return 2;
403
	  e->merge_transitions();
404
	}
405
      else
406
	{
407
	  if (redopt != spot::ltl::Reduce_None)
408
	    {
409
410
411
	      spot::ltl::formula* t = spot::ltl::reduce(f, redopt);
	      spot::ltl::destroy(f);
	      f = t;
412
413
	      if (display_reduce_form)
		std::cout << spot::ltl::to_string(f) << std::endl;
414
	    }
415

416
	  if (fm_opt)
417
	    to_free = a = spot::ltl_to_tgba_fm(f, dict, fm_exprop_opt,
418
					       fm_symb_merge_opt,
419
					       post_branching,
420
					       fair_loop_approx, unobservables);
421
422
423
	  else
	    to_free = a = concrete = spot::ltl_to_tgba_lacim(f, dict);
	}
424

425
426
427
428
      spot::tgba_tba_proxy* degeneralized = 0;
      if (degeneralize_opt)
	a = degeneralized = new spot::tgba_tba_proxy(a);

429
430
431
432
      spot::tgba_reduc* aut_red = 0;
      if (reduc_aut != spot::Reduce_None)
	{
	  a = aut_red = new spot::tgba_reduc(a);
433
434
435
436

	  if (reduc_aut & spot::Reduce_Scc)
	    aut_red->prune_scc();

martinez's avatar
martinez committed
437
438
439
440
	  if (reduc_aut & (spot::Reduce_quotient_Dir_Sim |
			   spot::Reduce_transition_Dir_Sim |
			   spot::Reduce_quotient_Del_Sim |
			   spot::Reduce_transition_Del_Sim))
441
	    {
martinez's avatar
martinez committed
442
443
444
445
446
447
448
449
450
451
452
453
454
	      spot::direct_simulation_relation* rel_dir = 0;
	      spot::delayed_simulation_relation* rel_del = 0;

	      if (reduc_aut & (spot::Reduce_quotient_Dir_Sim |
			       spot::Reduce_transition_Dir_Sim))
		rel_dir = spot::get_direct_relation_simulation(a,
							       std::cout,
							       display_parity_game);
	      else if (reduc_aut & (spot::Reduce_quotient_Del_Sim |
				    spot::Reduce_transition_Del_Sim))
		rel_del = spot::get_delayed_relation_simulation(a,
								std::cout,
								display_parity_game);
455
456

	      if (display_rel_sim)
martinez's avatar
martinez committed
457
458
459
460
461
462
		{
		  if (rel_dir)
		    aut_red->display_rel_sim(rel_dir, std::cout);
		  if (rel_del)
		    aut_red->display_rel_sim(rel_del, std::cout);
		}
463

martinez's avatar
martinez committed
464
465
466
467
468
469
470
471
472
473
474
475
476
	      if (reduc_aut & spot::Reduce_quotient_Dir_Sim)
		aut_red->quotient_state(rel_dir);
	      if (reduc_aut & spot::Reduce_transition_Dir_Sim)
		aut_red->delete_transitions(rel_dir);
	      if (reduc_aut & spot::Reduce_quotient_Del_Sim)
		aut_red->quotient_state(rel_del);
	      if (reduc_aut & spot::Reduce_transition_Del_Sim)
		aut_red->delete_transitions(rel_del);

	      if (rel_dir)
		spot::free_relation_simulation(rel_dir);
	      if (rel_del)
		spot::free_relation_simulation(rel_del);
477
478
479
	    }
	}

480
481
482
483
484
485
486
487
488
489
490
491
492
      spot::tgba_explicit* expl = 0;
      switch (dupexp)
	{
	case NoneDup:
	  break;
	case BFS:
	  a = expl = tgba_dupexp_bfs(a);
	  break;
	case DFS:
	  a = expl = tgba_dupexp_dfs(a);
	  break;
	}

493
494
      switch (output)
	{
495
496
497
	case -1:
	  /* No output.  */
	  break;
498
499
500
501
	case 0:
	  spot::dotty_reachable(std::cout, a);
	  break;
	case 1:
502
503
504
	  if (concrete)
	    spot::bdd_print_dot(std::cout, concrete->get_dict(),
				concrete->get_core_data().relation);
505
506
	  break;
	case 2:
507
508
509
	  if (concrete)
	    spot::bdd_print_dot(std::cout, concrete->get_dict(),
				concrete->
510
				get_core_data().acceptance_conditions);
511
512
	  break;
	case 3:
513
514
515
	  if (concrete)
	    spot::bdd_print_set(std::cout, concrete->get_dict(),
				concrete->get_core_data().relation);
516
517
	  break;
	case 4:
518
519
520
	  if (concrete)
	    spot::bdd_print_set(std::cout, concrete->get_dict(),
				concrete->
521
				get_core_data().acceptance_conditions);
522
	  break;
523
	case 5:
524
	  a->get_dict()->dump(std::cout);
525
	  break;
526
527
528
	case 6:
	  spot::lbtt_reachable(std::cout, a);
	  break;
529
530
531
	case 8:
	  spot::never_claim_reachable(std::cout, degeneralized, f);
	  break;
532
533
534
	default:
	  assert(!"unknown output option");
	}
535

536
537
538
539
      switch (echeck)
	{
	case None:
	  break;
martinez's avatar
martinez committed
540

541
	case Couvreur:
542
	case Couvreur2:
543
	  {
martinez's avatar
martinez committed
544
	    std::cout << "Tarjan Couvreur" << std::endl;
545
	    spot::emptiness_check* ec;
546
	    if (echeck == Couvreur)
547
	      ec = new spot::emptiness_check(a);
548
	    else
549
550
	      ec = new spot::emptiness_check_shy(a);
	    bool res = ec->check();
551
552
553
554
555
	    if (expect_counter_example)
	      {
		if (res)
		  {
		    exit_code = 1;
556
		    delete ec;
557
558
		    break;
		  }
559
		spot::counter_example ce(ec->result());
martinez's avatar
martinez committed
560
561
		ce.print_result(std::cout);
		ce.print_stats(std::cout);
562
563
564
565
566
	      }
	    else
	      {
		exit_code = !res;
	      }
567
	    delete ec;
568
569
	  }
	  break;
martinez's avatar
martinez committed
570

571
	case MagicSearch:
572
	  {
martinez's avatar
martinez committed
573
	    std::cout << "Magic Search" << std::endl;
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
	    spot::magic_search ms(degeneralized);
	    bool res = ms.check();
	    if (expect_counter_example)
	      {
		if (!res)
		  {
		    exit_code = 1;
		    break;
		  }
		do
		  ms.print_result(std::cout);
		while (magic_many && ms.check());
	      }
	    else
	      {
		exit_code = res;
	      }
	  }
	  break;
martinez's avatar
martinez committed
593

martinez's avatar
martinez committed
594
595
	default:
	  assert(0);
martinez's avatar
martinez committed
596
597
	}

598
599
      if (f)
        spot::ltl::destroy(f);
600
601
      if (expl)
	delete expl;
602
603
      if (degeneralize_opt)
	delete degeneralized;
604
605
      if (aut_red)
	delete aut_red;
606

607
      delete to_free;
608
609
610
611
612
613
614
615
616
617
    }
  else
    {
      exit_code = 1;
    }

  assert(spot::ltl::atomic_prop::instance_count() == 0);
  assert(spot::ltl::unop::instance_count() == 0);
  assert(spot::ltl::binop::instance_count() == 0);
  assert(spot::ltl::multop::instance_count() == 0);
618
  delete dict;
619
620
  return exit_code;
}