About the Execution of GreatSPN+red for HirschbergSinclair-PT-30
| Execution Summary | |||||
| Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
| 9188.796 | 3600000.00 | 9549350.00 | 9438.60 | FFTT?FTFFTT?TFF? | normal |
Execution Chart
We display below the execution chart for this examination (boot time has been removed).
Trace from the execution
Formatting '/data/fkordon/mcc2024-input.r201-smll-171649586600100.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2024-input.qcow2 backing_fmt=qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
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=====================================================================
Generated by BenchKit 2-5568
Executing tool greatspnxred
Input is HirschbergSinclair-PT-30, examination is LTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r201-smll-171649586600100
=====================================================================
--------------------
preparation of the directory to be used:
/home/mcc/execution
total 756K
-rw-r--r-- 1 mcc users 9.4K May 14 13:22 CTLCardinality.txt
-rw-r--r-- 1 mcc users 73K May 14 13:22 CTLCardinality.xml
-rw-r--r-- 1 mcc users 7.1K May 14 13:22 CTLFireability.txt
-rw-r--r-- 1 mcc users 48K May 14 13:22 CTLFireability.xml
-rw-r--r-- 1 mcc users 5.0K May 19 07:10 LTLCardinality.txt
-rw-r--r-- 1 mcc users 27K May 19 15:58 LTLCardinality.xml
-rw-r--r-- 1 mcc users 3.2K May 19 07:18 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K May 19 18:28 LTLFireability.xml
-rw-r--r-- 1 mcc users 13K Apr 13 03:18 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 91K Apr 13 03:18 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 8.9K Apr 13 03:17 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 48K Apr 13 03:17 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 2.0K Apr 22 14:48 UpperBounds.txt
-rw-r--r-- 1 mcc users 4.1K Apr 22 14:48 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 18 16:42 equiv_col
-rw-r--r-- 1 mcc users 3 May 18 16:42 instance
-rw-r--r-- 1 mcc users 6 May 18 16:42 iscolored
-rw-r--r-- 1 mcc users 357K May 18 16:42 model.pnml
--------------------
content from stdout:
=== Data for post analysis generated by BenchKit (invocation template)
The expected result is a vector of booleans
BOOL_VECTOR
here is the order used to build the result vector(from text file)
FORMULA_NAME HirschbergSinclair-PT-30-LTLFireability-00
FORMULA_NAME HirschbergSinclair-PT-30-LTLFireability-01
FORMULA_NAME HirschbergSinclair-PT-30-LTLFireability-02
FORMULA_NAME HirschbergSinclair-PT-30-LTLFireability-03
FORMULA_NAME HirschbergSinclair-PT-30-LTLFireability-04
FORMULA_NAME HirschbergSinclair-PT-30-LTLFireability-05
FORMULA_NAME HirschbergSinclair-PT-30-LTLFireability-06
FORMULA_NAME HirschbergSinclair-PT-30-LTLFireability-07
FORMULA_NAME HirschbergSinclair-PT-30-LTLFireability-08
FORMULA_NAME HirschbergSinclair-PT-30-LTLFireability-09
FORMULA_NAME HirschbergSinclair-PT-30-LTLFireability-10
FORMULA_NAME HirschbergSinclair-PT-30-LTLFireability-11
FORMULA_NAME HirschbergSinclair-PT-30-LTLFireability-12
FORMULA_NAME HirschbergSinclair-PT-30-LTLFireability-13
FORMULA_NAME HirschbergSinclair-PT-30-LTLFireability-14
FORMULA_NAME HirschbergSinclair-PT-30-LTLFireability-15
=== Now, execution of the tool begins
BK_START 1716602796728
Invoking MCC driver with
BK_TOOL=greatspnxred
BK_EXAMINATION=LTLFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=HirschbergSinclair-PT-30
BK_MEMORY_CONFINEMENT=16384
Applying reductions before tool greatspn
Invoking reducer
Running Version 202405141337
[2024-05-25 02:06:39] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, LTLFireability, -timeout, 360, -rebuildPNML]
[2024-05-25 02:06:39] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2024-05-25 02:06:39] [INFO ] Load time of PNML (sax parser for PT used): 227 ms
[2024-05-25 02:06:39] [INFO ] Transformed 670 places.
[2024-05-25 02:06:39] [INFO ] Transformed 605 transitions.
[2024-05-25 02:06:39] [INFO ] Parsed PT model containing 670 places and 605 transitions and 1849 arcs in 445 ms.
Parsed 16 properties from file /home/mcc/execution/LTLFireability.xml in 23 ms.
Working with output stream class java.io.PrintStream
Initial state reduction rules removed 3 formulas.
FORMULA HirschbergSinclair-PT-30-LTLFireability-00 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA HirschbergSinclair-PT-30-LTLFireability-03 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA HirschbergSinclair-PT-30-LTLFireability-13 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Support contains 52 out of 670 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 670/670 places, 605/605 transitions.
Reduce places removed 30 places and 0 transitions.
Iterating post reduction 0 with 30 rules applied. Total rules applied 30 place count 640 transition count 605
Discarding 28 places :
Symmetric choice reduction at 1 with 28 rule applications. Total rules 58 place count 612 transition count 577
Iterating global reduction 1 with 28 rules applied. Total rules applied 86 place count 612 transition count 577
Discarding 25 places :
Symmetric choice reduction at 1 with 25 rule applications. Total rules 111 place count 587 transition count 552
Iterating global reduction 1 with 25 rules applied. Total rules applied 136 place count 587 transition count 552
Applied a total of 136 rules in 370 ms. Remains 587 /670 variables (removed 83) and now considering 552/605 (removed 53) transitions.
// Phase 1: matrix 552 rows 587 cols
[2024-05-25 02:06:40] [INFO ] Computed 35 invariants in 55 ms
[2024-05-25 02:06:41] [INFO ] Implicit Places using invariants in 1166 ms returned []
[2024-05-25 02:06:41] [INFO ] Invariant cache hit.
[2024-05-25 02:06:44] [INFO ] Implicit Places using invariants and state equation in 2834 ms returned []
Implicit Place search using SMT with State Equation took 4071 ms to find 0 implicit places.
Running 522 sub problems to find dead transitions.
[2024-05-25 02:06:44] [INFO ] Invariant cache hit.
At refinement iteration 0 (INCLUDED_ONLY) 0/557 variables, 5/5 constraints. Problems are: Problem set: 0 solved, 522 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/557 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 522 unsolved
At refinement iteration 2 (OVERLAPS) 30/587 variables, 30/35 constraints. Problems are: Problem set: 0 solved, 522 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/587 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 522 unsolved
SMT process timed out in 30522ms, After SMT, problems are : Problem set: 0 solved, 522 unsolved
Search for dead transitions found 0 dead transitions in 30575ms
Starting structural reductions in LTL mode, iteration 1 : 587/670 places, 552/605 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 35077 ms. Remains : 587/670 places, 552/605 transitions.
Support contains 52 out of 587 places after structural reductions.
[2024-05-25 02:07:15] [INFO ] Flatten gal took : 164 ms
[2024-05-25 02:07:15] [INFO ] Flatten gal took : 78 ms
[2024-05-25 02:07:16] [INFO ] Input system was already deterministic with 552 transitions.
Reduction of identical properties reduced properties to check from 34 to 33
RANDOM walk for 40000 steps (64 resets) in 2197 ms. (18 steps per ms) remains 2/33 properties
BEST_FIRST walk for 40004 steps (8 resets) in 309 ms. (129 steps per ms) remains 2/2 properties
BEST_FIRST walk for 40004 steps (8 resets) in 183 ms. (217 steps per ms) remains 2/2 properties
[2024-05-25 02:07:16] [INFO ] Invariant cache hit.
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 1 (OVERLAPS) 484/493 variables, 31/31 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/493 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 3 (OVERLAPS) 34/527 variables, 4/35 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/527 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 2 unsolved
Problem AtomicPropp10 is UNSAT
At refinement iteration 5 (OVERLAPS) 552/1079 variables, 527/562 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/1079 variables, 0/562 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 60/1139 variables, 60/622 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/1139 variables, 0/622 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 0/1139 variables, 0/622 constraints. Problems are: Problem set: 1 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 1139/1139 variables, and 622 constraints, problems are : Problem set: 1 solved, 1 unsolved in 1112 ms.
Refiners :[Generalized P Invariants (flows): 35/35 constraints, State Equation: 587/587 constraints, PredecessorRefiner: 2/2 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 1 solved, 1 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/6 variables, 0/0 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 340/346 variables, 4/4 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/346 variables, 0/4 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 181/527 variables, 31/35 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/527 variables, 0/35 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 552/1079 variables, 527/562 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/1079 variables, 0/562 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 60/1139 variables, 60/622 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/1139 variables, 1/623 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/1139 variables, 0/623 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 0/1139 variables, 0/623 constraints. Problems are: Problem set: 1 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 1139/1139 variables, and 623 constraints, problems are : Problem set: 1 solved, 1 unsolved in 924 ms.
Refiners :[Generalized P Invariants (flows): 35/35 constraints, State Equation: 587/587 constraints, PredecessorRefiner: 1/2 constraints, Known Traps: 0/0 constraints]
After SMT, in 2069ms problems are : Problem set: 1 solved, 1 unsolved
Parikh walk visited 0 properties in 189 ms.
Support contains 6 out of 587 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 587/587 places, 552/552 transitions.
Graph (complete) has 1108 edges and 587 vertex of which 574 are kept as prefixes of interest. Removing 13 places using SCC suffix rule.6 ms
Discarding 13 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 13 transitions
Reduce isomorphic transitions removed 13 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 218 transitions
Trivial Post-agglo rules discarded 218 transitions
Performed 218 trivial Post agglomeration. Transition count delta: 218
Iterating post reduction 0 with 231 rules applied. Total rules applied 232 place count 574 transition count 321
Reduce places removed 218 places and 0 transitions.
Graph (complete) has 619 edges and 356 vertex of which 307 are kept as prefixes of interest. Removing 49 places using SCC suffix rule.1 ms
Discarding 49 places :
Also discarding 0 output transitions
Iterating post reduction 1 with 219 rules applied. Total rules applied 451 place count 307 transition count 321
Drop transitions (Empty/Sink Transition effects.) removed 49 transitions
Reduce isomorphic transitions removed 49 transitions.
Iterating post reduction 2 with 49 rules applied. Total rules applied 500 place count 307 transition count 272
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 503 place count 304 transition count 269
Iterating global reduction 3 with 3 rules applied. Total rules applied 506 place count 304 transition count 269
Drop transitions (Trivial Post-Agglo cleanup.) removed 1 transitions
Trivial Post-agglo rules discarded 1 transitions
Performed 1 trivial Post agglomeration. Transition count delta: 1
Iterating post reduction 3 with 1 rules applied. Total rules applied 507 place count 304 transition count 268
Reduce places removed 1 places and 0 transitions.
Graph (complete) has 517 edges and 303 vertex of which 302 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.1 ms
Discarding 1 places :
Also discarding 0 output transitions
Iterating post reduction 4 with 2 rules applied. Total rules applied 509 place count 302 transition count 268
Drop transitions (Empty/Sink Transition effects.) removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 5 with 1 rules applied. Total rules applied 510 place count 302 transition count 267
Discarding 3 places :
Symmetric choice reduction at 6 with 3 rule applications. Total rules 513 place count 299 transition count 264
Iterating global reduction 6 with 3 rules applied. Total rules applied 516 place count 299 transition count 264
Discarding 1 places :
Symmetric choice reduction at 6 with 1 rule applications. Total rules 517 place count 298 transition count 263
Iterating global reduction 6 with 1 rules applied. Total rules applied 518 place count 298 transition count 263
Free-agglomeration rule (complex) applied 17 times.
Iterating global reduction 6 with 17 rules applied. Total rules applied 535 place count 298 transition count 246
Reduce places removed 17 places and 0 transitions.
Iterating post reduction 6 with 17 rules applied. Total rules applied 552 place count 281 transition count 246
Reduce places removed 27 places and 27 transitions.
Iterating global reduction 7 with 27 rules applied. Total rules applied 579 place count 254 transition count 219
Reduce places removed 13 places and 0 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 71 transitions
Trivial Post-agglo rules discarded 71 transitions
Performed 71 trivial Post agglomeration. Transition count delta: 71
Iterating post reduction 7 with 84 rules applied. Total rules applied 663 place count 241 transition count 148
Reduce places removed 71 places and 0 transitions.
Iterating post reduction 8 with 71 rules applied. Total rules applied 734 place count 170 transition count 148
Performed 13 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 9 with 13 Pre rules applied. Total rules applied 734 place count 170 transition count 135
Deduced a syphon composed of 13 places in 1 ms
Reduce places removed 13 places and 0 transitions.
Iterating global reduction 9 with 26 rules applied. Total rules applied 760 place count 157 transition count 135
Discarding 1 places :
Implicit places reduction removed 1 places
Iterating post reduction 9 with 1 rules applied. Total rules applied 761 place count 156 transition count 135
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 10 with 1 Pre rules applied. Total rules applied 761 place count 156 transition count 134
Deduced a syphon composed of 1 places in 9 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 10 with 2 rules applied. Total rules applied 763 place count 155 transition count 134
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Deduced a syphon composed of 2 places in 9 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 10 with 4 rules applied. Total rules applied 767 place count 153 transition count 132
Applied a total of 767 rules in 559 ms. Remains 153 /587 variables (removed 434) and now considering 132/552 (removed 420) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 559 ms. Remains : 153/587 places, 132/552 transitions.
RANDOM walk for 40000 steps (284 resets) in 382 ms. (104 steps per ms) remains 1/1 properties
BEST_FIRST walk for 1825 steps (0 resets) in 16 ms. (107 steps per ms) remains 0/1 properties
Successfully simplified 1 atomic propositions for a total of 13 simplifications.
Computed a total of 587 stabilizing places and 552 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 587 transition count 552
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(X((G(p0) U G(p1)))))'
Support contains 3 out of 587 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 587/587 places, 552/552 transitions.
Discarding 5 places :
Symmetric choice reduction at 0 with 5 rule applications. Total rules 5 place count 582 transition count 547
Iterating global reduction 0 with 5 rules applied. Total rules applied 10 place count 582 transition count 547
Discarding 2 places :
Symmetric choice reduction at 0 with 2 rule applications. Total rules 12 place count 580 transition count 545
Iterating global reduction 0 with 2 rules applied. Total rules applied 14 place count 580 transition count 545
Applied a total of 14 rules in 249 ms. Remains 580 /587 variables (removed 7) and now considering 545/552 (removed 7) transitions.
// Phase 1: matrix 545 rows 580 cols
[2024-05-25 02:07:20] [INFO ] Computed 35 invariants in 8 ms
[2024-05-25 02:07:21] [INFO ] Implicit Places using invariants in 555 ms returned []
[2024-05-25 02:07:21] [INFO ] Invariant cache hit.
[2024-05-25 02:07:23] [INFO ] Implicit Places using invariants and state equation in 2419 ms returned []
Implicit Place search using SMT with State Equation took 2978 ms to find 0 implicit places.
Running 515 sub problems to find dead transitions.
[2024-05-25 02:07:23] [INFO ] Invariant cache hit.
At refinement iteration 0 (INCLUDED_ONLY) 0/550 variables, 5/5 constraints. Problems are: Problem set: 0 solved, 515 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/550 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 515 unsolved
At refinement iteration 2 (OVERLAPS) 30/580 variables, 30/35 constraints. Problems are: Problem set: 0 solved, 515 unsolved
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(s475 org.smtlib.IParser$ParserException: Unbalanced parentheses at end of input")
At refinement iteration 3 (INCLUDED_ONLY) 0/580 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 515 unsolved
SMT process timed out in 30335ms, After SMT, problems are : Problem set: 0 solved, 515 unsolved
Search for dead transitions found 0 dead transitions in 30349ms
Starting structural reductions in LTL mode, iteration 1 : 580/587 places, 545/552 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 33584 ms. Remains : 580/587 places, 545/552 transitions.
Stuttering acceptance computed with spot in 456 ms :[(NOT p1), (NOT p1), (NOT p1), true, (AND p1 (NOT p0)), (NOT p1)]
Running random walk in product with property : HirschbergSinclair-PT-30-LTLFireability-01
Product exploration explored 100000 steps with 19953 reset in 860 ms.
Product exploration explored 100000 steps with 20004 reset in 551 ms.
Computed a total of 580 stabilizing places and 545 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 580 transition count 545
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge : F ( (Ga|G!a) & (Gb|G!b)...)
Knowledge obtained : [(AND (NOT p1) p0), (X (X (NOT (AND (NOT p1) (NOT p0))))), (X (X (NOT (AND p1 (NOT p0))))), (X (X (AND (NOT p1) p0))), (X (X (NOT (AND p1 p0)))), (X (X p0)), (X (X (NOT p1))), (F (G (NOT p1))), (F (G p0))]
False Knowledge obtained : []
Knowledge sufficient to adopt a stutter insensitive property.
Knowledge based reduction with 9 factoid took 271 ms. Reduced automaton from 6 states, 12 edges and 2 AP (stutter sensitive) to 4 states, 10 edges and 2 AP (stutter insensitive).
Stuttering acceptance computed with spot in 174 ms :[(NOT p1), true, (AND (NOT p0) p1), (NOT p1)]
Reduction of identical properties reduced properties to check from 6 to 5
RANDOM walk for 40000 steps (64 resets) in 692 ms. (57 steps per ms) remains 1/5 properties
BEST_FIRST walk for 40004 steps (8 resets) in 291 ms. (137 steps per ms) remains 1/1 properties
[2024-05-25 02:07:56] [INFO ] Invariant cache hit.
Problem apf3 is UNSAT
After SMT solving in domain Real declared 3/1125 variables, and 0 constraints, problems are : Problem set: 1 solved, 0 unsolved in 26 ms.
Refiners :[Generalized P Invariants (flows): 0/35 constraints, State Equation: 0/580 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints]
After SMT, in 48ms problems are : Problem set: 1 solved, 0 unsolved
Skipping Parikh replay, no witness traces provided.
Found 1 invariant AP formulas.
Knowledge obtained : [(AND (NOT p1) p0), (X (X (NOT (AND (NOT p1) (NOT p0))))), (X (X (NOT (AND p1 (NOT p0))))), (X (X (AND (NOT p1) p0))), (X (X (NOT (AND p1 p0)))), (X (X p0)), (X (X (NOT p1))), (F (G (NOT p1))), (F (G p0)), (G (OR (NOT p0) (NOT p1)))]
False Knowledge obtained : [(F (NOT p0)), (F p1), (F (NOT (AND p0 (NOT p1)))), (F (NOT (OR p0 (NOT p1)))), (F (NOT (OR p0 p1)))]
Property proved to be false thanks to conjunction of knowledge (Minato strategy)
Knowledge based reduction with 10 factoid took 342 ms. Reduced automaton from 4 states, 10 edges and 2 AP (stutter insensitive) to 1 states, 1 edges and 0 AP (stutter insensitive).
FORMULA HirschbergSinclair-PT-30-LTLFireability-01 FALSE TECHNIQUES KNOWLEDGE
Treatment of property HirschbergSinclair-PT-30-LTLFireability-01 finished in 37035 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(X(X(X(F((X(p1)||p0)))))))'
Support contains 5 out of 587 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 587/587 places, 552/552 transitions.
Discarding 5 places :
Symmetric choice reduction at 0 with 5 rule applications. Total rules 5 place count 582 transition count 547
Iterating global reduction 0 with 5 rules applied. Total rules applied 10 place count 582 transition count 547
Discarding 2 places :
Symmetric choice reduction at 0 with 2 rule applications. Total rules 12 place count 580 transition count 545
Iterating global reduction 0 with 2 rules applied. Total rules applied 14 place count 580 transition count 545
Applied a total of 14 rules in 73 ms. Remains 580 /587 variables (removed 7) and now considering 545/552 (removed 7) transitions.
[2024-05-25 02:07:57] [INFO ] Invariant cache hit.
[2024-05-25 02:07:58] [INFO ] Implicit Places using invariants in 718 ms returned []
[2024-05-25 02:07:58] [INFO ] Invariant cache hit.
[2024-05-25 02:08:01] [INFO ] Implicit Places using invariants and state equation in 3014 ms returned []
Implicit Place search using SMT with State Equation took 3736 ms to find 0 implicit places.
Running 515 sub problems to find dead transitions.
[2024-05-25 02:08:01] [INFO ] Invariant cache hit.
At refinement iteration 0 (INCLUDED_ONLY) 0/550 variables, 5/5 constraints. Problems are: Problem set: 0 solved, 515 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/550 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 515 unsolved
At refinement iteration 2 (OVERLAPS) 30/580 variables, 30/35 constraints. Problems are: Problem set: 0 solved, 515 unsolved
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(s530 timeout
org.smtlib.IParser$ParserException: Unbalanced parentheses at end of input")
At refinement iteration 3 (INCLUDED_ONLY) 0/580 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 515 unsolved
SMT process timed out in 30253ms, After SMT, problems are : Problem set: 0 solved, 515 unsolved
Search for dead transitions found 0 dead transitions in 30263ms
Starting structural reductions in LTL mode, iteration 1 : 580/587 places, 545/552 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 34074 ms. Remains : 580/587 places, 545/552 transitions.
Stuttering acceptance computed with spot in 365 ms :[(AND (NOT p0) (NOT p1)), (AND (NOT p0) (NOT p1)), (AND (NOT p0) (NOT p1)), (AND (NOT p0) (NOT p1)), (AND (NOT p0) (NOT p1)), (AND (NOT p0) (NOT p1))]
Running random walk in product with property : HirschbergSinclair-PT-30-LTLFireability-02
Product exploration explored 100000 steps with 16666 reset in 641 ms.
Product exploration explored 100000 steps with 16666 reset in 511 ms.
Computed a total of 580 stabilizing places and 545 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 580 transition count 545
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge : F ( (Ga|G!a) & (Gb|G!b)...)
Knowledge obtained : [(AND (NOT p0) p1), (F (G (NOT p0))), (F (G p1))]
False Knowledge obtained : []
Property proved to be true thanks to knowledge (Minato strategy)
Knowledge based reduction with 3 factoid took 15 ms. Reduced automaton from 6 states, 6 edges and 2 AP (stutter sensitive) to 1 states, 0 edges and 0 AP (stutter insensitive).
FORMULA HirschbergSinclair-PT-30-LTLFireability-02 TRUE TECHNIQUES KNOWLEDGE
Treatment of property HirschbergSinclair-PT-30-LTLFireability-02 finished in 35918 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((p0 U p1))'
Support contains 4 out of 587 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 587/587 places, 552/552 transitions.
Reduce places removed 29 places and 29 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 226 transitions
Trivial Post-agglo rules discarded 226 transitions
Performed 226 trivial Post agglomeration. Transition count delta: 226
Iterating post reduction 0 with 226 rules applied. Total rules applied 226 place count 558 transition count 297
Reduce places removed 226 places and 0 transitions.
Iterating post reduction 1 with 226 rules applied. Total rules applied 452 place count 332 transition count 297
Discarding 5 places :
Symmetric choice reduction at 2 with 5 rule applications. Total rules 457 place count 327 transition count 292
Iterating global reduction 2 with 5 rules applied. Total rules applied 462 place count 327 transition count 292
Drop transitions (Trivial Post-Agglo cleanup.) removed 3 transitions
Trivial Post-agglo rules discarded 3 transitions
Performed 3 trivial Post agglomeration. Transition count delta: 3
Iterating post reduction 2 with 3 rules applied. Total rules applied 465 place count 327 transition count 289
Reduce places removed 3 places and 0 transitions.
Iterating post reduction 3 with 3 rules applied. Total rules applied 468 place count 324 transition count 289
Applied a total of 468 rules in 59 ms. Remains 324 /587 variables (removed 263) and now considering 289/552 (removed 263) transitions.
// Phase 1: matrix 289 rows 324 cols
[2024-05-25 02:08:33] [INFO ] Computed 35 invariants in 3 ms
[2024-05-25 02:08:33] [INFO ] Implicit Places using invariants in 382 ms returned []
[2024-05-25 02:08:33] [INFO ] Invariant cache hit.
[2024-05-25 02:08:35] [INFO ] Implicit Places using invariants and state equation in 1428 ms returned []
Implicit Place search using SMT with State Equation took 1835 ms to find 0 implicit places.
[2024-05-25 02:08:35] [INFO ] Redundant transitions in 32 ms returned []
Running 233 sub problems to find dead transitions.
[2024-05-25 02:08:35] [INFO ] Invariant cache hit.
At refinement iteration 0 (INCLUDED_ONLY) 0/268 variables, 4/4 constraints. Problems are: Problem set: 0 solved, 233 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/268 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 233 unsolved
At refinement iteration 2 (OVERLAPS) 3/271 variables, 31/35 constraints. Problems are: Problem set: 0 solved, 233 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/271 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 233 unsolved
At refinement iteration 4 (OVERLAPS) 236/507 variables, 271/306 constraints. Problems are: Problem set: 0 solved, 233 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/507 variables, 0/306 constraints. Problems are: Problem set: 0 solved, 233 unsolved
At refinement iteration 6 (OVERLAPS) 0/507 variables, 0/306 constraints. Problems are: Problem set: 0 solved, 233 unsolved
No progress, stopping.
After SMT solving in domain Real declared 507/613 variables, and 306 constraints, problems are : Problem set: 0 solved, 233 unsolved in 21450 ms.
Refiners :[Generalized P Invariants (flows): 35/35 constraints, State Equation: 271/324 constraints, PredecessorRefiner: 233/233 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 233 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/268 variables, 4/4 constraints. Problems are: Problem set: 0 solved, 233 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/268 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 233 unsolved
At refinement iteration 2 (OVERLAPS) 3/271 variables, 31/35 constraints. Problems are: Problem set: 0 solved, 233 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/271 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 233 unsolved
At refinement iteration 4 (OVERLAPS) 236/507 variables, 271/306 constraints. Problems are: Problem set: 0 solved, 233 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/507 variables, 233/539 constraints. Problems are: Problem set: 0 solved, 233 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/507 variables, 0/539 constraints. Problems are: Problem set: 0 solved, 233 unsolved
At refinement iteration 7 (OVERLAPS) 0/507 variables, 0/539 constraints. Problems are: Problem set: 0 solved, 233 unsolved
No progress, stopping.
After SMT solving in domain Int declared 507/613 variables, and 539 constraints, problems are : Problem set: 0 solved, 233 unsolved in 26681 ms.
Refiners :[Generalized P Invariants (flows): 35/35 constraints, State Equation: 271/324 constraints, PredecessorRefiner: 233/233 constraints, Known Traps: 0/0 constraints]
After SMT, in 48220ms problems are : Problem set: 0 solved, 233 unsolved
Search for dead transitions found 0 dead transitions in 48230ms
Starting structural reductions in SI_LTL mode, iteration 1 : 324/587 places, 289/552 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 50175 ms. Remains : 324/587 places, 289/552 transitions.
Stuttering acceptance computed with spot in 59 ms :[true, (NOT p1)]
Running random walk in product with property : HirschbergSinclair-PT-30-LTLFireability-04
Product exploration explored 100000 steps with 690 reset in 754 ms.
Product exploration explored 100000 steps with 691 reset in 491 ms.
Computed a total of 324 stabilizing places and 289 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 324 transition count 289
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge : F ( (Ga|G!a) & (Gb|G!b)...)
Knowledge obtained : [(AND (NOT p1) p0), (X (NOT (AND (NOT p1) (NOT p0)))), (X (AND (NOT p1) p0)), (X p0), (X (NOT p1)), (X (X (NOT (AND (NOT p1) (NOT p0))))), (X (X (AND (NOT p1) p0))), (X (X p0)), (X (X (NOT p1))), (F (G (NOT p1))), (F (G p0))]
False Knowledge obtained : []
Knowledge based reduction with 11 factoid took 189 ms. Reduced automaton from 2 states, 3 edges and 2 AP (stutter insensitive) to 2 states, 3 edges and 2 AP (stutter insensitive).
Stuttering acceptance computed with spot in 49 ms :[true, (NOT p1)]
RANDOM walk for 40000 steps (118 resets) in 198 ms. (201 steps per ms) remains 1/4 properties
BEST_FIRST walk for 40003 steps (10 resets) in 639 ms. (62 steps per ms) remains 1/1 properties
[2024-05-25 02:09:25] [INFO ] Invariant cache hit.
Problem apf1 is UNSAT
After SMT solving in domain Real declared 4/613 variables, and 0 constraints, problems are : Problem set: 1 solved, 0 unsolved in 21 ms.
Refiners :[Generalized P Invariants (flows): 0/35 constraints, State Equation: 0/324 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints]
After SMT, in 33ms problems are : Problem set: 1 solved, 0 unsolved
Skipping Parikh replay, no witness traces provided.
Found 1 invariant AP formulas.
Knowledge obtained : [(AND (NOT p1) p0), (X (NOT (AND (NOT p1) (NOT p0)))), (X (AND (NOT p1) p0)), (X p0), (X (NOT p1)), (X (X (NOT (AND (NOT p1) (NOT p0))))), (X (X (AND (NOT p1) p0))), (X (X p0)), (X (X (NOT p1))), (F (G (NOT p1))), (F (G p0)), (G (OR p0 p1))]
False Knowledge obtained : [(F p1), (F (NOT (AND p0 (NOT p1)))), (F (NOT p0))]
Knowledge based reduction with 12 factoid took 675 ms. Reduced automaton from 2 states, 3 edges and 2 AP (stutter insensitive) to 1 states, 1 edges and 1 AP (stutter insensitive).
Stuttering acceptance computed with spot in 51 ms :[(NOT p1)]
Stuttering acceptance computed with spot in 49 ms :[(NOT p1)]
[2024-05-25 02:09:26] [INFO ] Invariant cache hit.
[2024-05-25 02:09:26] [INFO ] [Real]Absence check using 0 positive and 35 generalized place invariants in 140 ms returned sat
[2024-05-25 02:09:27] [INFO ] [Real]Absence check using state equation in 407 ms returned sat
[2024-05-25 02:09:27] [INFO ] Solution in real domain found non-integer solution.
[2024-05-25 02:09:27] [INFO ] [Nat]Absence check using 0 positive and 35 generalized place invariants in 233 ms returned sat
[2024-05-25 02:09:29] [INFO ] [Nat]Absence check using state equation in 1671 ms returned sat
[2024-05-25 02:09:29] [INFO ] Computed and/alt/rep : 222/229/222 causal constraints (skipped 11 transitions) in 36 ms.
[2024-05-25 02:09:30] [INFO ] Added : 59 causal constraints over 12 iterations in 753 ms. Result :sat
Could not prove EG (NOT p1)
Support contains 2 out of 324 places. Attempting structural reductions.
Property had overlarge support with respect to TGBA, discarding it for now.
Starting structural reductions in SI_LTL mode, iteration 0 : 324/324 places, 289/289 transitions.
Applied a total of 0 rules in 31 ms. Remains 324 /324 variables (removed 0) and now considering 289/289 (removed 0) transitions.
[2024-05-25 02:09:30] [INFO ] Invariant cache hit.
[2024-05-25 02:09:30] [INFO ] Implicit Places using invariants in 449 ms returned []
[2024-05-25 02:09:30] [INFO ] Invariant cache hit.
[2024-05-25 02:09:32] [INFO ] Implicit Places using invariants and state equation in 1228 ms returned []
Implicit Place search using SMT with State Equation took 1682 ms to find 0 implicit places.
[2024-05-25 02:09:32] [INFO ] Redundant transitions in 6 ms returned []
Running 233 sub problems to find dead transitions.
[2024-05-25 02:09:32] [INFO ] Invariant cache hit.
At refinement iteration 0 (INCLUDED_ONLY) 0/268 variables, 4/4 constraints. Problems are: Problem set: 0 solved, 233 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/268 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 233 unsolved
At refinement iteration 2 (OVERLAPS) 3/271 variables, 31/35 constraints. Problems are: Problem set: 0 solved, 233 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/271 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 233 unsolved
At refinement iteration 4 (OVERLAPS) 236/507 variables, 271/306 constraints. Problems are: Problem set: 0 solved, 233 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/507 variables, 0/306 constraints. Problems are: Problem set: 0 solved, 233 unsolved
At refinement iteration 6 (OVERLAPS) 0/507 variables, 0/306 constraints. Problems are: Problem set: 0 solved, 233 unsolved
No progress, stopping.
After SMT solving in domain Real declared 507/613 variables, and 306 constraints, problems are : Problem set: 0 solved, 233 unsolved in 20864 ms.
Refiners :[Generalized P Invariants (flows): 35/35 constraints, State Equation: 271/324 constraints, PredecessorRefiner: 233/233 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 233 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/268 variables, 4/4 constraints. Problems are: Problem set: 0 solved, 233 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/268 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 233 unsolved
At refinement iteration 2 (OVERLAPS) 3/271 variables, 31/35 constraints. Problems are: Problem set: 0 solved, 233 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/271 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 233 unsolved
At refinement iteration 4 (OVERLAPS) 236/507 variables, 271/306 constraints. Problems are: Problem set: 0 solved, 233 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/507 variables, 233/539 constraints. Problems are: Problem set: 0 solved, 233 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/507 variables, 0/539 constraints. Problems are: Problem set: 0 solved, 233 unsolved
At refinement iteration 7 (OVERLAPS) 0/507 variables, 0/539 constraints. Problems are: Problem set: 0 solved, 233 unsolved
No progress, stopping.
After SMT solving in domain Int declared 507/613 variables, and 539 constraints, problems are : Problem set: 0 solved, 233 unsolved in 27032 ms.
Refiners :[Generalized P Invariants (flows): 35/35 constraints, State Equation: 271/324 constraints, PredecessorRefiner: 233/233 constraints, Known Traps: 0/0 constraints]
After SMT, in 47955ms problems are : Problem set: 0 solved, 233 unsolved
Search for dead transitions found 0 dead transitions in 47959ms
Finished structural reductions in SI_LTL mode , in 1 iterations and 49685 ms. Remains : 324/324 places, 289/289 transitions.
Computed a total of 324 stabilizing places and 289 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 324 transition count 289
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge : F ( (Ga|G!a) & (Gb|G!b)...)
Knowledge obtained : [(NOT p1), (X (NOT p1)), (X (X (NOT p1))), (F (G (NOT p1)))]
False Knowledge obtained : []
Knowledge based reduction with 4 factoid took 132 ms. Reduced automaton from 1 states, 1 edges and 1 AP (stutter insensitive) to 1 states, 1 edges and 1 AP (stutter insensitive).
Stuttering acceptance computed with spot in 34 ms :[(NOT p1)]
RANDOM walk for 629 steps (0 resets) in 6 ms. (89 steps per ms) remains 0/1 properties
Knowledge obtained : [(NOT p1), (X (NOT p1)), (X (X (NOT p1))), (F (G (NOT p1)))]
False Knowledge obtained : [(F p1)]
Knowledge based reduction with 4 factoid took 105 ms. Reduced automaton from 1 states, 1 edges and 1 AP (stutter insensitive) to 1 states, 1 edges and 1 AP (stutter insensitive).
Stuttering acceptance computed with spot in 35 ms :[(NOT p1)]
Stuttering acceptance computed with spot in 32 ms :[(NOT p1)]
[2024-05-25 02:10:20] [INFO ] Invariant cache hit.
[2024-05-25 02:10:20] [INFO ] [Real]Absence check using 0 positive and 35 generalized place invariants in 137 ms returned sat
[2024-05-25 02:10:21] [INFO ] [Real]Absence check using state equation in 398 ms returned sat
[2024-05-25 02:10:21] [INFO ] Solution in real domain found non-integer solution.
[2024-05-25 02:10:21] [INFO ] [Nat]Absence check using 0 positive and 35 generalized place invariants in 180 ms returned sat
[2024-05-25 02:10:23] [INFO ] [Nat]Absence check using state equation in 1334 ms returned sat
[2024-05-25 02:10:23] [INFO ] Computed and/alt/rep : 222/229/222 causal constraints (skipped 11 transitions) in 23 ms.
[2024-05-25 02:10:23] [INFO ] Added : 59 causal constraints over 12 iterations in 707 ms. Result :sat
Could not prove EG (NOT p1)
Stuttering acceptance computed with spot in 47 ms :[(NOT p1)]
Product exploration explored 100000 steps with 690 reset in 552 ms.
Product exploration explored 100000 steps with 691 reset in 463 ms.
Support contains 2 out of 324 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 324/324 places, 289/289 transitions.
Reduce places removed 1 places and 1 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 11 transitions
Trivial Post-agglo rules discarded 11 transitions
Performed 11 trivial Post agglomeration. Transition count delta: 11
Iterating post reduction 0 with 11 rules applied. Total rules applied 11 place count 323 transition count 277
Reduce places removed 11 places and 0 transitions.
Iterating post reduction 1 with 11 rules applied. Total rules applied 22 place count 312 transition count 277
Applied a total of 22 rules in 26 ms. Remains 312 /324 variables (removed 12) and now considering 277/289 (removed 12) transitions.
// Phase 1: matrix 277 rows 312 cols
[2024-05-25 02:10:25] [INFO ] Computed 35 invariants in 3 ms
[2024-05-25 02:10:25] [INFO ] Implicit Places using invariants in 426 ms returned []
[2024-05-25 02:10:25] [INFO ] Invariant cache hit.
[2024-05-25 02:10:26] [INFO ] Implicit Places using invariants and state equation in 992 ms returned []
Implicit Place search using SMT with State Equation took 1421 ms to find 0 implicit places.
[2024-05-25 02:10:26] [INFO ] Redundant transitions in 6 ms returned []
Running 218 sub problems to find dead transitions.
[2024-05-25 02:10:26] [INFO ] Invariant cache hit.
At refinement iteration 0 (INCLUDED_ONLY) 0/253 variables, 4/4 constraints. Problems are: Problem set: 0 solved, 218 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/253 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 218 unsolved
At refinement iteration 2 (OVERLAPS) 2/255 variables, 31/35 constraints. Problems are: Problem set: 0 solved, 218 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/255 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 218 unsolved
At refinement iteration 4 (OVERLAPS) 220/475 variables, 255/290 constraints. Problems are: Problem set: 0 solved, 218 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/475 variables, 0/290 constraints. Problems are: Problem set: 0 solved, 218 unsolved
At refinement iteration 6 (OVERLAPS) 0/475 variables, 0/290 constraints. Problems are: Problem set: 0 solved, 218 unsolved
No progress, stopping.
After SMT solving in domain Real declared 475/589 variables, and 290 constraints, problems are : Problem set: 0 solved, 218 unsolved in 17652 ms.
Refiners :[Generalized P Invariants (flows): 35/35 constraints, State Equation: 255/312 constraints, PredecessorRefiner: 218/218 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 218 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/253 variables, 4/4 constraints. Problems are: Problem set: 0 solved, 218 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/253 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 218 unsolved
At refinement iteration 2 (OVERLAPS) 2/255 variables, 31/35 constraints. Problems are: Problem set: 0 solved, 218 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/255 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 218 unsolved
At refinement iteration 4 (OVERLAPS) 220/475 variables, 255/290 constraints. Problems are: Problem set: 0 solved, 218 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/475 variables, 218/508 constraints. Problems are: Problem set: 0 solved, 218 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/475 variables, 0/508 constraints. Problems are: Problem set: 0 solved, 218 unsolved
At refinement iteration 7 (OVERLAPS) 0/475 variables, 0/508 constraints. Problems are: Problem set: 0 solved, 218 unsolved
No progress, stopping.
After SMT solving in domain Int declared 475/589 variables, and 508 constraints, problems are : Problem set: 0 solved, 218 unsolved in 22273 ms.
Refiners :[Generalized P Invariants (flows): 35/35 constraints, State Equation: 255/312 constraints, PredecessorRefiner: 218/218 constraints, Known Traps: 0/0 constraints]
After SMT, in 39963ms problems are : Problem set: 0 solved, 218 unsolved
Search for dead transitions found 0 dead transitions in 39968ms
Starting structural reductions in SI_LTL mode, iteration 1 : 312/324 places, 277/289 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 41429 ms. Remains : 312/324 places, 277/289 transitions.
Treatment of property HirschbergSinclair-PT-30-LTLFireability-04 finished in 153361 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(G((G(p0) U (F(p1)||X(G(p2))))))'
Support contains 4 out of 587 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 587/587 places, 552/552 transitions.
Discarding 5 places :
Symmetric choice reduction at 0 with 5 rule applications. Total rules 5 place count 582 transition count 547
Iterating global reduction 0 with 5 rules applied. Total rules applied 10 place count 582 transition count 547
Discarding 2 places :
Symmetric choice reduction at 0 with 2 rule applications. Total rules 12 place count 580 transition count 545
Iterating global reduction 0 with 2 rules applied. Total rules applied 14 place count 580 transition count 545
Applied a total of 14 rules in 43 ms. Remains 580 /587 variables (removed 7) and now considering 545/552 (removed 7) transitions.
// Phase 1: matrix 545 rows 580 cols
[2024-05-25 02:11:06] [INFO ] Computed 35 invariants in 8 ms
[2024-05-25 02:11:07] [INFO ] Implicit Places using invariants in 417 ms returned []
[2024-05-25 02:11:07] [INFO ] Invariant cache hit.
[2024-05-25 02:11:10] [INFO ] Implicit Places using invariants and state equation in 3064 ms returned []
Implicit Place search using SMT with State Equation took 3490 ms to find 0 implicit places.
Running 515 sub problems to find dead transitions.
[2024-05-25 02:11:10] [INFO ] Invariant cache hit.
At refinement iteration 0 (INCLUDED_ONLY) 0/550 variables, 5/5 constraints. Problems are: Problem set: 0 solved, 515 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/550 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 515 unsolved
At refinement iteration 2 (OVERLAPS) 30/580 variables, 30/35 constraints. Problems are: Problem set: 0 solved, 515 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/580 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 515 unsolved
SMT process timed out in 30250ms, After SMT, problems are : Problem set: 0 solved, 515 unsolved
Search for dead transitions found 0 dead transitions in 30263ms
Starting structural reductions in LTL mode, iteration 1 : 580/587 places, 545/552 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 33799 ms. Remains : 580/587 places, 545/552 transitions.
Stuttering acceptance computed with spot in 308 ms :[(AND (NOT p1) (NOT p2)), (AND (NOT p1) (NOT p2)), (AND (NOT p1) (NOT p2)), (NOT p1), (AND (NOT p1) (NOT p0) p2)]
Running random walk in product with property : HirschbergSinclair-PT-30-LTLFireability-05
Product exploration explored 100000 steps with 191 reset in 473 ms.
Product exploration explored 100000 steps with 191 reset in 506 ms.
Computed a total of 580 stabilizing places and 545 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 580 transition count 545
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge : F ( (Ga|G!a) & (Gb|G!b)...)
Knowledge obtained : [(AND (NOT p1) (NOT p0) (NOT p2)), (X (NOT p2)), (X (AND (NOT p1) (NOT p0) (NOT p2))), (X (AND (NOT p1) (NOT p2))), (X (NOT (AND (NOT p1) (NOT p0) p2))), (X (NOT (AND (NOT p1) p2))), (X (NOT (AND (NOT p1) p0 p2))), (X (NOT (AND (NOT p1) p0 (NOT p2)))), (X (NOT p0)), (X (NOT p1)), (X (X (NOT p2))), (X (X (AND (NOT p1) (NOT p0) (NOT p2)))), (X (X (AND (NOT p1) (NOT p2)))), (X (X (NOT (AND (NOT p1) (NOT p0) p2)))), (X (X (NOT (AND (NOT p1) p2)))), (X (X (NOT (AND (NOT p1) p0 p2)))), (X (X (NOT (AND (NOT p1) p0 (NOT p2))))), (X (X (NOT p0))), (X (X (NOT p1))), (F (G (NOT p1))), (F (G (NOT p0))), (F (G (NOT p2)))]
False Knowledge obtained : []
Knowledge sufficient to adopt a stutter insensitive property.
Knowledge based reduction with 22 factoid took 216 ms. Reduced automaton from 5 states, 13 edges and 3 AP (stutter sensitive) to 5 states, 15 edges and 3 AP (stutter insensitive).
Stuttering acceptance computed with spot in 273 ms :[(AND (NOT p1) (NOT p2)), (AND (NOT p1) (NOT p2)), (AND (NOT p1) (NOT p2)), (NOT p1), (AND (NOT p1) (NOT p0) p2)]
RANDOM walk for 40000 steps (64 resets) in 251 ms. (158 steps per ms) remains 1/9 properties
BEST_FIRST walk for 40004 steps (8 resets) in 109 ms. (363 steps per ms) remains 1/1 properties
[2024-05-25 02:11:42] [INFO ] Invariant cache hit.
At refinement iteration 0 (INCLUDED_ONLY) 0/4 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 485/489 variables, 31/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/489 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 34/523 variables, 4/35 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/523 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Problem apf6 is UNSAT
After SMT solving in domain Real declared 1068/1125 variables, and 558 constraints, problems are : Problem set: 1 solved, 0 unsolved in 634 ms.
Refiners :[Generalized P Invariants (flows): 35/35 constraints, State Equation: 523/580 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints]
After SMT, in 665ms problems are : Problem set: 1 solved, 0 unsolved
Skipping Parikh replay, no witness traces provided.
Found 1 invariant AP formulas.
Knowledge obtained : [(AND (NOT p1) (NOT p0) (NOT p2)), (X (NOT p2)), (X (AND (NOT p1) (NOT p0) (NOT p2))), (X (AND (NOT p1) (NOT p2))), (X (NOT (AND (NOT p1) (NOT p0) p2))), (X (NOT (AND (NOT p1) p2))), (X (NOT (AND (NOT p1) p0 p2))), (X (NOT (AND (NOT p1) p0 (NOT p2)))), (X (NOT p0)), (X (NOT p1)), (X (X (NOT p2))), (X (X (AND (NOT p1) (NOT p0) (NOT p2)))), (X (X (AND (NOT p1) (NOT p2)))), (X (X (NOT (AND (NOT p1) (NOT p0) p2)))), (X (X (NOT (AND (NOT p1) p2)))), (X (X (NOT (AND (NOT p1) p0 p2)))), (X (X (NOT (AND (NOT p1) p0 (NOT p2))))), (X (X (NOT p0))), (X (X (NOT p1))), (F (G (NOT p1))), (F (G (NOT p0))), (F (G (NOT p2))), (G (OR (NOT p0) (NOT p2) p1))]
False Knowledge obtained : [(F (NOT (OR (NOT p2) p1))), (F (NOT (OR (NOT p0) p2 p1))), (F (NOT (OR p0 (NOT p2) p1))), (F p2), (F (NOT (AND (NOT p2) (NOT p1)))), (F (NOT (AND (NOT p0) (NOT p2) (NOT p1)))), (F p1), (F p0)]
Property proved to be false thanks to negative knowledge :(F (NOT (OR (NOT p2) p1)))
Knowledge based reduction with 23 factoid took 358 ms. Reduced automaton from 5 states, 15 edges and 3 AP (stutter insensitive) to 1 states, 1 edges and 0 AP (stutter insensitive).
FORMULA HirschbergSinclair-PT-30-LTLFireability-05 FALSE TECHNIQUES KNOWLEDGE
Treatment of property HirschbergSinclair-PT-30-LTLFireability-05 finished in 37197 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F((X(p0)&&(G(p2)||p1))))'
Support contains 6 out of 587 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 587/587 places, 552/552 transitions.
Discarding 5 places :
Symmetric choice reduction at 0 with 5 rule applications. Total rules 5 place count 582 transition count 547
Iterating global reduction 0 with 5 rules applied. Total rules applied 10 place count 582 transition count 547
Discarding 2 places :
Symmetric choice reduction at 0 with 2 rule applications. Total rules 12 place count 580 transition count 545
Iterating global reduction 0 with 2 rules applied. Total rules applied 14 place count 580 transition count 545
Applied a total of 14 rules in 75 ms. Remains 580 /587 variables (removed 7) and now considering 545/552 (removed 7) transitions.
[2024-05-25 02:11:43] [INFO ] Invariant cache hit.
[2024-05-25 02:11:44] [INFO ] Implicit Places using invariants in 731 ms returned []
[2024-05-25 02:11:44] [INFO ] Invariant cache hit.
[2024-05-25 02:11:47] [INFO ] Implicit Places using invariants and state equation in 3092 ms returned []
Implicit Place search using SMT with State Equation took 3827 ms to find 0 implicit places.
Running 515 sub problems to find dead transitions.
[2024-05-25 02:11:47] [INFO ] Invariant cache hit.
At refinement iteration 0 (INCLUDED_ONLY) 0/550 variables, 5/5 constraints. Problems are: Problem set: 0 solved, 515 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/550 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 515 unsolved
At refinement iteration 2 (OVERLAPS) 30/580 variables, 30/35 constraints. Problems are: Problem set: 0 solved, 515 unsolved
Error getting values : (error "ParserException while parsing response: (timeout
org.smtlib.IParser$ParserException: Unbalanced parentheses at end of input")
At refinement iteration 3 (INCLUDED_ONLY) 0/580 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 515 unsolved
SMT process timed out in 30235ms, After SMT, problems are : Problem set: 0 solved, 515 unsolved
Search for dead transitions found 0 dead transitions in 30242ms
Starting structural reductions in LTL mode, iteration 1 : 580/587 places, 545/552 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 34145 ms. Remains : 580/587 places, 545/552 transitions.
Stuttering acceptance computed with spot in 267 ms :[(OR (NOT p0) (AND (NOT p1) (NOT p2))), (NOT p0), (OR (AND (NOT p1) (NOT p2)) (AND (NOT p0) (NOT p2))), (AND (NOT p0) (NOT p2))]
Running random walk in product with property : HirschbergSinclair-PT-30-LTLFireability-06
Product exploration explored 100000 steps with 50000 reset in 592 ms.
Product exploration explored 100000 steps with 50000 reset in 404 ms.
Computed a total of 580 stabilizing places and 545 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 580 transition count 545
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge : F ( (Ga|G!a) & (Gb|G!b)...)
Knowledge obtained : [(AND p1 p2 p0), (X p2), (X (AND p1 p2)), (X (NOT (AND (NOT p1) p2 (NOT p0)))), (X (NOT (AND (NOT p1) (NOT p2)))), (X (OR p1 p2)), (X (NOT (AND (NOT p1) p2))), (X (NOT (AND (NOT p1) (NOT p2) (NOT p0)))), (X (NOT (AND p1 (NOT p2)))), (X p0), (X p1), (X (NOT (OR (AND p1 (NOT p0)) (AND p2 (NOT p0))))), (X (X p2)), (X (X (AND p1 p2))), (X (X (NOT (AND (NOT p1) p2 (NOT p0))))), (X (X (NOT (AND (NOT p1) (NOT p2))))), (X (X (NOT (AND (NOT p1) (NOT p2) (NOT p0))))), (X (X (NOT (AND p1 p2 (NOT p0))))), (X (X (OR p1 p2))), (X (X (NOT (AND (NOT p1) p2)))), (X (X (NOT (AND p1 (NOT p2))))), (X (X p0)), (X (X (NOT (AND p1 (NOT p2) (NOT p0))))), (X (X p1)), (X (X (NOT (OR (AND p1 (NOT p0)) (AND p2 (NOT p0)))))), (F (G p1)), (F (G p2)), (F (G p0))]
False Knowledge obtained : []
Property proved to be true thanks to conjunction of knowledge (Minato strategy)
Knowledge based reduction with 28 factoid took 390 ms. Reduced automaton from 4 states, 14 edges and 3 AP (stutter sensitive) to 1 states, 0 edges and 0 AP (stutter insensitive).
FORMULA HirschbergSinclair-PT-30-LTLFireability-06 TRUE TECHNIQUES KNOWLEDGE
Treatment of property HirschbergSinclair-PT-30-LTLFireability-06 finished in 36121 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((X(F(p0)) U G(p1)))'
Support contains 3 out of 587 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 587/587 places, 552/552 transitions.
Reduce places removed 28 places and 28 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 231 transitions
Trivial Post-agglo rules discarded 231 transitions
Performed 231 trivial Post agglomeration. Transition count delta: 231
Iterating post reduction 0 with 231 rules applied. Total rules applied 231 place count 559 transition count 293
Reduce places removed 231 places and 0 transitions.
Iterating post reduction 1 with 231 rules applied. Total rules applied 462 place count 328 transition count 293
Discarding 5 places :
Symmetric choice reduction at 2 with 5 rule applications. Total rules 467 place count 323 transition count 288
Iterating global reduction 2 with 5 rules applied. Total rules applied 472 place count 323 transition count 288
Drop transitions (Trivial Post-Agglo cleanup.) removed 3 transitions
Trivial Post-agglo rules discarded 3 transitions
Performed 3 trivial Post agglomeration. Transition count delta: 3
Iterating post reduction 2 with 3 rules applied. Total rules applied 475 place count 323 transition count 285
Reduce places removed 3 places and 0 transitions.
Iterating post reduction 3 with 3 rules applied. Total rules applied 478 place count 320 transition count 285
Discarding 1 places :
Symmetric choice reduction at 4 with 1 rule applications. Total rules 479 place count 319 transition count 284
Iterating global reduction 4 with 1 rules applied. Total rules applied 480 place count 319 transition count 284
Applied a total of 480 rules in 62 ms. Remains 319 /587 variables (removed 268) and now considering 284/552 (removed 268) transitions.
// Phase 1: matrix 284 rows 319 cols
[2024-05-25 02:12:20] [INFO ] Computed 35 invariants in 3 ms
[2024-05-25 02:12:20] [INFO ] Implicit Places using invariants in 673 ms returned []
[2024-05-25 02:12:20] [INFO ] Invariant cache hit.
[2024-05-25 02:12:21] [INFO ] State equation strengthened by 7 read => feed constraints.
[2024-05-25 02:12:22] [INFO ] Implicit Places using invariants and state equation in 1799 ms returned []
Implicit Place search using SMT with State Equation took 2474 ms to find 0 implicit places.
[2024-05-25 02:12:22] [INFO ] Redundant transitions in 4 ms returned []
Running 229 sub problems to find dead transitions.
[2024-05-25 02:12:22] [INFO ] Invariant cache hit.
[2024-05-25 02:12:22] [INFO ] State equation strengthened by 7 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/264 variables, 4/4 constraints. Problems are: Problem set: 0 solved, 229 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/264 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 229 unsolved
At refinement iteration 2 (OVERLAPS) 4/268 variables, 31/35 constraints. Problems are: Problem set: 0 solved, 229 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/268 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 229 unsolved
At refinement iteration 4 (OVERLAPS) 233/501 variables, 268/303 constraints. Problems are: Problem set: 0 solved, 229 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/501 variables, 7/310 constraints. Problems are: Problem set: 0 solved, 229 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/501 variables, 0/310 constraints. Problems are: Problem set: 0 solved, 229 unsolved
At refinement iteration 7 (OVERLAPS) 0/501 variables, 0/310 constraints. Problems are: Problem set: 0 solved, 229 unsolved
No progress, stopping.
After SMT solving in domain Real declared 501/603 variables, and 310 constraints, problems are : Problem set: 0 solved, 229 unsolved in 23942 ms.
Refiners :[Generalized P Invariants (flows): 35/35 constraints, State Equation: 268/319 constraints, ReadFeed: 7/7 constraints, PredecessorRefiner: 229/229 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 229 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/264 variables, 4/4 constraints. Problems are: Problem set: 0 solved, 229 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/264 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 229 unsolved
At refinement iteration 2 (OVERLAPS) 4/268 variables, 31/35 constraints. Problems are: Problem set: 0 solved, 229 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/268 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 229 unsolved
At refinement iteration 4 (OVERLAPS) 233/501 variables, 268/303 constraints. Problems are: Problem set: 0 solved, 229 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/501 variables, 7/310 constraints. Problems are: Problem set: 0 solved, 229 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/501 variables, 229/539 constraints. Problems are: Problem set: 0 solved, 229 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/501 variables, 0/539 constraints. Problems are: Problem set: 0 solved, 229 unsolved
At refinement iteration 8 (OVERLAPS) 0/501 variables, 0/539 constraints. Problems are: Problem set: 0 solved, 229 unsolved
No progress, stopping.
After SMT solving in domain Int declared 501/603 variables, and 539 constraints, problems are : Problem set: 0 solved, 229 unsolved in 24909 ms.
Refiners :[Generalized P Invariants (flows): 35/35 constraints, State Equation: 268/319 constraints, ReadFeed: 7/7 constraints, PredecessorRefiner: 229/229 constraints, Known Traps: 0/0 constraints]
After SMT, in 48901ms problems are : Problem set: 0 solved, 229 unsolved
Search for dead transitions found 0 dead transitions in 48905ms
Starting structural reductions in SI_LTL mode, iteration 1 : 319/587 places, 284/552 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 51452 ms. Remains : 319/587 places, 284/552 transitions.
Stuttering acceptance computed with spot in 113 ms :[(NOT p1), (NOT p0)]
Running random walk in product with property : HirschbergSinclair-PT-30-LTLFireability-07
Product exploration explored 100000 steps with 33133 reset in 727 ms.
Product exploration explored 100000 steps with 33289 reset in 747 ms.
Computed a total of 319 stabilizing places and 284 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 319 transition count 284
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge : F ( (Ga|G!a) & (Gb|G!b)...)
Knowledge obtained : [(AND (NOT p1) p0), (X p0), (X (NOT p1)), (X (X p0)), (F (G (NOT p1))), (F (G p0))]
False Knowledge obtained : [(X (X p1)), (X (X (NOT p1)))]
Property proved to be false thanks to negative knowledge :(X (X p1))
Knowledge based reduction with 6 factoid took 174 ms. Reduced automaton from 2 states, 4 edges and 2 AP (stutter insensitive) to 1 states, 1 edges and 0 AP (stutter insensitive).
FORMULA HirschbergSinclair-PT-30-LTLFireability-07 FALSE TECHNIQUES KNOWLEDGE
Treatment of property HirschbergSinclair-PT-30-LTLFireability-07 finished in 53417 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((X(G(p0)) U (X(F(p2))&&p1)))'
Support contains 4 out of 587 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 587/587 places, 552/552 transitions.
Discarding 5 places :
Symmetric choice reduction at 0 with 5 rule applications. Total rules 5 place count 582 transition count 547
Iterating global reduction 0 with 5 rules applied. Total rules applied 10 place count 582 transition count 547
Discarding 2 places :
Symmetric choice reduction at 0 with 2 rule applications. Total rules 12 place count 580 transition count 545
Iterating global reduction 0 with 2 rules applied. Total rules applied 14 place count 580 transition count 545
Applied a total of 14 rules in 47 ms. Remains 580 /587 variables (removed 7) and now considering 545/552 (removed 7) transitions.
// Phase 1: matrix 545 rows 580 cols
[2024-05-25 02:13:13] [INFO ] Computed 35 invariants in 4 ms
[2024-05-25 02:13:14] [INFO ] Implicit Places using invariants in 668 ms returned []
[2024-05-25 02:13:14] [INFO ] Invariant cache hit.
[2024-05-25 02:13:17] [INFO ] Implicit Places using invariants and state equation in 3166 ms returned []
Implicit Place search using SMT with State Equation took 3836 ms to find 0 implicit places.
Running 515 sub problems to find dead transitions.
[2024-05-25 02:13:17] [INFO ] Invariant cache hit.
At refinement iteration 0 (INCLUDED_ONLY) 0/550 variables, 5/5 constraints. Problems are: Problem set: 0 solved, 515 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/550 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 515 unsolved
At refinement iteration 2 (OVERLAPS) 30/580 variables, 30/35 constraints. Problems are: Problem set: 0 solved, 515 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/580 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 515 unsolved
SMT process timed out in 30258ms, After SMT, problems are : Problem set: 0 solved, 515 unsolved
Search for dead transitions found 0 dead transitions in 30267ms
Starting structural reductions in LTL mode, iteration 1 : 580/587 places, 545/552 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 34153 ms. Remains : 580/587 places, 545/552 transitions.
Stuttering acceptance computed with spot in 206 ms :[(OR (NOT p1) (NOT p2)), (NOT p0), (NOT p2), true]
Running random walk in product with property : HirschbergSinclair-PT-30-LTLFireability-08
Entered a terminal (fully accepting) state of product in 2 steps with 0 reset in 0 ms.
FORMULA HirschbergSinclair-PT-30-LTLFireability-08 FALSE TECHNIQUES STUTTER_TEST
Treatment of property HirschbergSinclair-PT-30-LTLFireability-08 finished in 34391 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(X(F((G(p1)||p0)))))'
Support contains 8 out of 587 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 587/587 places, 552/552 transitions.
Discarding 4 places :
Symmetric choice reduction at 0 with 4 rule applications. Total rules 4 place count 583 transition count 548
Iterating global reduction 0 with 4 rules applied. Total rules applied 8 place count 583 transition count 548
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 9 place count 582 transition count 547
Iterating global reduction 0 with 1 rules applied. Total rules applied 10 place count 582 transition count 547
Applied a total of 10 rules in 75 ms. Remains 582 /587 variables (removed 5) and now considering 547/552 (removed 5) transitions.
// Phase 1: matrix 547 rows 582 cols
[2024-05-25 02:13:47] [INFO ] Computed 35 invariants in 7 ms
[2024-05-25 02:13:48] [INFO ] Implicit Places using invariants in 758 ms returned []
[2024-05-25 02:13:48] [INFO ] Invariant cache hit.
[2024-05-25 02:13:51] [INFO ] Implicit Places using invariants and state equation in 3094 ms returned []
Implicit Place search using SMT with State Equation took 3855 ms to find 0 implicit places.
Running 517 sub problems to find dead transitions.
[2024-05-25 02:13:51] [INFO ] Invariant cache hit.
At refinement iteration 0 (INCLUDED_ONLY) 0/552 variables, 5/5 constraints. Problems are: Problem set: 0 solved, 517 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/552 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 517 unsolved
At refinement iteration 2 (OVERLAPS) 30/582 variables, 30/35 constraints. Problems are: Problem set: 0 solved, 517 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/582 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 517 unsolved
SMT process timed out in 30238ms, After SMT, problems are : Problem set: 0 solved, 517 unsolved
Search for dead transitions found 0 dead transitions in 30248ms
Starting structural reductions in LTL mode, iteration 1 : 582/587 places, 547/552 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 34183 ms. Remains : 582/587 places, 547/552 transitions.
Stuttering acceptance computed with spot in 170 ms :[(AND (NOT p1) (NOT p0)), (AND (NOT p1) (NOT p0)), (AND (NOT p1) (NOT p0))]
Running random walk in product with property : HirschbergSinclair-PT-30-LTLFireability-09
Product exploration explored 100000 steps with 208 reset in 578 ms.
Product exploration explored 100000 steps with 208 reset in 406 ms.
Computed a total of 582 stabilizing places and 547 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 582 transition count 547
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge : F ( (Ga|G!a) & (Gb|G!b)...)
Knowledge obtained : [(AND p1 (NOT p0)), (X (X (NOT (AND (NOT p1) (NOT p0))))), (X (X (AND p1 (NOT p0)))), (X (X (NOT p0))), (X (X p1)), (F (G p1)), (F (G (NOT p0)))]
False Knowledge obtained : []
Property proved to be true thanks to knowledge (Minato strategy)
Knowledge based reduction with 7 factoid took 29 ms. Reduced automaton from 3 states, 4 edges and 2 AP (stutter sensitive) to 1 states, 0 edges and 0 AP (stutter insensitive).
FORMULA HirschbergSinclair-PT-30-LTLFireability-09 TRUE TECHNIQUES KNOWLEDGE
Treatment of property HirschbergSinclair-PT-30-LTLFireability-09 finished in 35669 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F((G(p0)||G(p1))))'
Support contains 4 out of 587 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 587/587 places, 552/552 transitions.
Reduce places removed 28 places and 28 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 220 transitions
Trivial Post-agglo rules discarded 220 transitions
Performed 220 trivial Post agglomeration. Transition count delta: 220
Iterating post reduction 0 with 220 rules applied. Total rules applied 220 place count 559 transition count 304
Reduce places removed 220 places and 0 transitions.
Iterating post reduction 1 with 220 rules applied. Total rules applied 440 place count 339 transition count 304
Discarding 5 places :
Symmetric choice reduction at 2 with 5 rule applications. Total rules 445 place count 334 transition count 299
Iterating global reduction 2 with 5 rules applied. Total rules applied 450 place count 334 transition count 299
Drop transitions (Trivial Post-Agglo cleanup.) removed 3 transitions
Trivial Post-agglo rules discarded 3 transitions
Performed 3 trivial Post agglomeration. Transition count delta: 3
Iterating post reduction 2 with 3 rules applied. Total rules applied 453 place count 334 transition count 296
Reduce places removed 3 places and 0 transitions.
Iterating post reduction 3 with 3 rules applied. Total rules applied 456 place count 331 transition count 296
Applied a total of 456 rules in 55 ms. Remains 331 /587 variables (removed 256) and now considering 296/552 (removed 256) transitions.
// Phase 1: matrix 296 rows 331 cols
[2024-05-25 02:14:23] [INFO ] Computed 35 invariants in 3 ms
[2024-05-25 02:14:24] [INFO ] Implicit Places using invariants in 570 ms returned []
[2024-05-25 02:14:24] [INFO ] Invariant cache hit.
[2024-05-25 02:14:25] [INFO ] Implicit Places using invariants and state equation in 1526 ms returned []
Implicit Place search using SMT with State Equation took 2103 ms to find 0 implicit places.
[2024-05-25 02:14:25] [INFO ] Redundant transitions in 2 ms returned []
Running 243 sub problems to find dead transitions.
[2024-05-25 02:14:25] [INFO ] Invariant cache hit.
At refinement iteration 0 (INCLUDED_ONLY) 0/278 variables, 4/4 constraints. Problems are: Problem set: 0 solved, 243 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/278 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 243 unsolved
At refinement iteration 2 (OVERLAPS) 4/282 variables, 31/35 constraints. Problems are: Problem set: 0 solved, 243 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/282 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 243 unsolved
At refinement iteration 4 (OVERLAPS) 247/529 variables, 282/317 constraints. Problems are: Problem set: 0 solved, 243 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/529 variables, 0/317 constraints. Problems are: Problem set: 0 solved, 243 unsolved
At refinement iteration 6 (OVERLAPS) 0/529 variables, 0/317 constraints. Problems are: Problem set: 0 solved, 243 unsolved
No progress, stopping.
After SMT solving in domain Real declared 529/627 variables, and 317 constraints, problems are : Problem set: 0 solved, 243 unsolved in 23450 ms.
Refiners :[Generalized P Invariants (flows): 35/35 constraints, State Equation: 282/331 constraints, PredecessorRefiner: 243/243 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 243 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/278 variables, 4/4 constraints. Problems are: Problem set: 0 solved, 243 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/278 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 243 unsolved
At refinement iteration 2 (OVERLAPS) 4/282 variables, 31/35 constraints. Problems are: Problem set: 0 solved, 243 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/282 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 243 unsolved
At refinement iteration 4 (OVERLAPS) 247/529 variables, 282/317 constraints. Problems are: Problem set: 0 solved, 243 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/529 variables, 243/560 constraints. Problems are: Problem set: 0 solved, 243 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/529 variables, 0/560 constraints. Problems are: Problem set: 0 solved, 243 unsolved
At refinement iteration 7 (OVERLAPS) 0/529 variables, 0/560 constraints. Problems are: Problem set: 0 solved, 243 unsolved
No progress, stopping.
After SMT solving in domain Int declared 529/627 variables, and 560 constraints, problems are : Problem set: 0 solved, 243 unsolved in 27938 ms.
Refiners :[Generalized P Invariants (flows): 35/35 constraints, State Equation: 282/331 constraints, PredecessorRefiner: 243/243 constraints, Known Traps: 0/0 constraints]
After SMT, in 51441ms problems are : Problem set: 0 solved, 243 unsolved
Search for dead transitions found 0 dead transitions in 51445ms
Starting structural reductions in SI_LTL mode, iteration 1 : 331/587 places, 296/552 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 53619 ms. Remains : 331/587 places, 296/552 transitions.
Stuttering acceptance computed with spot in 53 ms :[(AND (NOT p0) (NOT p1))]
Running random walk in product with property : HirschbergSinclair-PT-30-LTLFireability-10
Product exploration explored 100000 steps with 305 reset in 604 ms.
Product exploration explored 100000 steps with 305 reset in 626 ms.
Computed a total of 331 stabilizing places and 296 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 331 transition count 296
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge : F ( (Ga|G!a) & (Gb|G!b)...)
Knowledge obtained : [(AND p0 (NOT p1)), (X (AND p0 (NOT p1))), (X (NOT (AND (NOT p0) (NOT p1)))), (X (NOT (AND (NOT p0) p1))), (X (NOT (AND p0 p1))), (X p0), (X (NOT p1)), (X (X (AND p0 (NOT p1)))), (X (X (NOT (AND (NOT p0) (NOT p1))))), (X (X (NOT (AND (NOT p0) p1)))), (X (X (NOT (AND p0 p1)))), (X (X p0)), (X (X (NOT p1))), (F (G p0)), (F (G (NOT p1)))]
False Knowledge obtained : []
Property proved to be true thanks to knowledge (Minato strategy)
Knowledge based reduction with 15 factoid took 25 ms. Reduced automaton from 1 states, 4 edges and 2 AP (stutter insensitive) to 1 states, 0 edges and 0 AP (stutter insensitive).
FORMULA HirschbergSinclair-PT-30-LTLFireability-10 TRUE TECHNIQUES KNOWLEDGE
Treatment of property HirschbergSinclair-PT-30-LTLFireability-10 finished in 55159 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X((p0||X(((!p0||X(!p1)||G(p2)) U (p0&&(!p0||X(!p1)||G(p2))))))))'
Support contains 4 out of 587 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 587/587 places, 552/552 transitions.
Discarding 5 places :
Symmetric choice reduction at 0 with 5 rule applications. Total rules 5 place count 582 transition count 547
Iterating global reduction 0 with 5 rules applied. Total rules applied 10 place count 582 transition count 547
Discarding 2 places :
Symmetric choice reduction at 0 with 2 rule applications. Total rules 12 place count 580 transition count 545
Iterating global reduction 0 with 2 rules applied. Total rules applied 14 place count 580 transition count 545
Applied a total of 14 rules in 69 ms. Remains 580 /587 variables (removed 7) and now considering 545/552 (removed 7) transitions.
// Phase 1: matrix 545 rows 580 cols
[2024-05-25 02:15:18] [INFO ] Computed 35 invariants in 6 ms
[2024-05-25 02:15:19] [INFO ] Implicit Places using invariants in 537 ms returned []
[2024-05-25 02:15:19] [INFO ] Invariant cache hit.
[2024-05-25 02:15:21] [INFO ] Implicit Places using invariants and state equation in 2689 ms returned []
Implicit Place search using SMT with State Equation took 3231 ms to find 0 implicit places.
Running 515 sub problems to find dead transitions.
[2024-05-25 02:15:21] [INFO ] Invariant cache hit.
At refinement iteration 0 (INCLUDED_ONLY) 0/550 variables, 5/5 constraints. Problems are: Problem set: 0 solved, 515 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/550 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 515 unsolved
At refinement iteration 2 (OVERLAPS) 30/580 variables, 30/35 constraints. Problems are: Problem set: 0 solved, 515 unsolved
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org.smtlib.IParser$ParserException: Unbalanced parentheses at end of input")
At refinement iteration 3 (INCLUDED_ONLY) 0/580 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 515 unsolved
SMT process timed out in 30247ms, After SMT, problems are : Problem set: 0 solved, 515 unsolved
Search for dead transitions found 0 dead transitions in 30257ms
Starting structural reductions in LTL mode, iteration 1 : 580/587 places, 545/552 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 33560 ms. Remains : 580/587 places, 545/552 transitions.
Stuttering acceptance computed with spot in 341 ms :[(NOT p0), (OR (NOT p0) (AND p1 (NOT p2))), p1, (AND (NOT p2) p1), (NOT p2), true, (NOT p0)]
Running random walk in product with property : HirschbergSinclair-PT-30-LTLFireability-11
Product exploration explored 100000 steps with 403 reset in 671 ms.
Product exploration explored 100000 steps with 403 reset in 469 ms.
Computed a total of 580 stabilizing places and 545 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 580 transition count 545
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge : F ( (Ga|G!a) & (Gb|G!b)...)
Knowledge obtained : [(AND (NOT p0) (NOT p2) (NOT p1)), (X (NOT p0)), (X (X (NOT p2))), (X (X (NOT (AND p0 (NOT p2))))), (X (X (NOT (AND p0 p2)))), (X (X (NOT p0))), (F (G (NOT p0))), (F (G (NOT p2))), (F (G (NOT p1)))]
False Knowledge obtained : []
Knowledge based reduction with 9 factoid took 377 ms. Reduced automaton from 7 states, 11 edges and 3 AP (stutter sensitive) to 7 states, 11 edges and 3 AP (stutter sensitive).
Stuttering acceptance computed with spot in 338 ms :[p1, (OR (NOT p0) (AND p1 (NOT p2))), (NOT p2), (AND (NOT p2) p1), (OR (NOT p0) (AND p1 (NOT p2))), true, (OR (NOT p0) (AND p1 (NOT p2)))]
RANDOM walk for 40000 steps (64 resets) in 308 ms. (129 steps per ms) remains 2/7 properties
BEST_FIRST walk for 40004 steps (8 resets) in 146 ms. (272 steps per ms) remains 2/2 properties
BEST_FIRST walk for 40004 steps (8 resets) in 131 ms. (303 steps per ms) remains 2/2 properties
[2024-05-25 02:15:54] [INFO ] Invariant cache hit.
At refinement iteration 0 (INCLUDED_ONLY) 0/4 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 1 (OVERLAPS) 453/457 variables, 30/30 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/457 variables, 0/30 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 3 (OVERLAPS) 66/523 variables, 5/35 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/523 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 2 unsolved
Problem apf1 is UNSAT
Problem apf3 is UNSAT
After SMT solving in domain Real declared 1068/1125 variables, and 558 constraints, problems are : Problem set: 2 solved, 0 unsolved in 633 ms.
Refiners :[Generalized P Invariants (flows): 35/35 constraints, State Equation: 523/580 constraints, PredecessorRefiner: 2/2 constraints, Known Traps: 0/0 constraints]
After SMT, in 644ms problems are : Problem set: 2 solved, 0 unsolved
Skipping Parikh replay, no witness traces provided.
Found 2 invariant AP formulas.
Knowledge obtained : [(AND (NOT p0) (NOT p2) (NOT p1)), (X (NOT p0)), (X (X (NOT p2))), (X (X (NOT (AND p0 (NOT p2))))), (X (X (NOT (AND p0 p2)))), (X (X (NOT p0))), (F (G (NOT p0))), (F (G (NOT p2))), (F (G (NOT p1))), (G (OR (NOT p0) (NOT p2))), (G (OR (NOT p1) (NOT p2)))]
False Knowledge obtained : [(F (NOT (OR (NOT p1) p2))), (F p1), (F p0), (F p2), (F (NOT (OR (NOT p0) p2)))]
Knowledge based reduction with 11 factoid took 1228 ms. Reduced automaton from 7 states, 11 edges and 3 AP (stutter sensitive) to 5 states, 6 edges and 2 AP (stutter sensitive).
Stuttering acceptance computed with spot in 202 ms :[p1, (OR (NOT p0) p1), (OR (NOT p0) p1), true, (OR (NOT p0) p1)]
Stuttering acceptance computed with spot in 196 ms :[p1, (OR (NOT p0) p1), (OR (NOT p0) p1), true, (OR (NOT p0) p1)]
[2024-05-25 02:15:57] [INFO ] Invariant cache hit.
[2024-05-25 02:15:57] [INFO ] [Real]Absence check using 0 positive and 35 generalized place invariants in 111 ms returned sat
[2024-05-25 02:15:58] [INFO ] [Real]Absence check using state equation in 995 ms returned sat
[2024-05-25 02:15:58] [INFO ] Solution in real domain found non-integer solution.
[2024-05-25 02:15:59] [INFO ] [Nat]Absence check using 0 positive and 35 generalized place invariants in 301 ms returned sat
[2024-05-25 02:16:01] [INFO ] [Nat]Absence check using state equation in 1569 ms returned sat
[2024-05-25 02:16:01] [INFO ] Computed and/alt/rep : 343/1072/343 causal constraints (skipped 172 transitions) in 69 ms.
[2024-05-25 02:16:02] [INFO ] Added : 107 causal constraints over 22 iterations in 1601 ms. Result :sat
Could not prove EG (NOT p0)
Support contains 3 out of 580 places. Attempting structural reductions.
Property had overlarge support with respect to TGBA, discarding it for now.
Starting structural reductions in LTL mode, iteration 0 : 580/580 places, 545/545 transitions.
Applied a total of 0 rules in 24 ms. Remains 580 /580 variables (removed 0) and now considering 545/545 (removed 0) transitions.
[2024-05-25 02:16:02] [INFO ] Invariant cache hit.
[2024-05-25 02:16:03] [INFO ] Implicit Places using invariants in 550 ms returned []
[2024-05-25 02:16:03] [INFO ] Invariant cache hit.
[2024-05-25 02:16:05] [INFO ] Implicit Places using invariants and state equation in 2434 ms returned []
Implicit Place search using SMT with State Equation took 2991 ms to find 0 implicit places.
Running 515 sub problems to find dead transitions.
[2024-05-25 02:16:05] [INFO ] Invariant cache hit.
At refinement iteration 0 (INCLUDED_ONLY) 0/550 variables, 5/5 constraints. Problems are: Problem set: 0 solved, 515 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/550 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 515 unsolved
At refinement iteration 2 (OVERLAPS) 30/580 variables, 30/35 constraints. Problems are: Problem set: 0 solved, 515 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/580 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 515 unsolved
SMT process timed out in 30272ms, After SMT, problems are : Problem set: 0 solved, 515 unsolved
Search for dead transitions found 0 dead transitions in 30284ms
Finished structural reductions in LTL mode , in 1 iterations and 33301 ms. Remains : 580/580 places, 545/545 transitions.
Computed a total of 580 stabilizing places and 545 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 580 transition count 545
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge : F ( (Ga|G!a) & (Gb|G!b)...)
Knowledge obtained : [(AND (NOT p1) (NOT p0)), (X (X (NOT p0))), (F (G (NOT p1))), (F (G (NOT p0)))]
False Knowledge obtained : []
Knowledge based reduction with 4 factoid took 120 ms. Reduced automaton from 5 states, 6 edges and 2 AP (stutter sensitive) to 5 states, 6 edges and 2 AP (stutter sensitive).
Stuttering acceptance computed with spot in 221 ms :[p1, (OR (NOT p0) p1), (OR (NOT p0) p1), true, (OR (NOT p0) p1)]
RANDOM walk for 2416 steps (0 resets) in 26 ms. (89 steps per ms) remains 0/2 properties
Knowledge obtained : [(AND (NOT p1) (NOT p0)), (X (X (NOT p0))), (F (G (NOT p1))), (F (G (NOT p0)))]
False Knowledge obtained : [(F p0), (F p1)]
Knowledge based reduction with 4 factoid took 205 ms. Reduced automaton from 5 states, 6 edges and 2 AP (stutter sensitive) to 5 states, 6 edges and 2 AP (stutter sensitive).
Stuttering acceptance computed with spot in 221 ms :[p1, (OR (NOT p0) p1), (OR (NOT p0) p1), true, (OR (NOT p0) p1)]
Stuttering acceptance computed with spot in 220 ms :[p1, (OR (NOT p0) p1), (OR (NOT p0) p1), true, (OR (NOT p0) p1)]
[2024-05-25 02:16:37] [INFO ] Invariant cache hit.
[2024-05-25 02:16:38] [INFO ] [Real]Absence check using 0 positive and 35 generalized place invariants in 131 ms returned sat
[2024-05-25 02:16:39] [INFO ] [Real]Absence check using state equation in 1143 ms returned sat
[2024-05-25 02:16:39] [INFO ] Solution in real domain found non-integer solution.
[2024-05-25 02:16:40] [INFO ] [Nat]Absence check using 0 positive and 35 generalized place invariants in 285 ms returned sat
[2024-05-25 02:16:42] [INFO ] [Nat]Absence check using state equation in 1699 ms returned sat
[2024-05-25 02:16:42] [INFO ] Computed and/alt/rep : 343/1072/343 causal constraints (skipped 172 transitions) in 73 ms.
[2024-05-25 02:16:43] [INFO ] Added : 107 causal constraints over 22 iterations in 1626 ms. Result :sat
Could not prove EG (NOT p0)
Stuttering acceptance computed with spot in 231 ms :[p1, (OR (NOT p0) p1), (OR (NOT p0) p1), true, (OR (NOT p0) p1)]
Product exploration explored 100000 steps with 403 reset in 791 ms.
Product exploration explored 100000 steps with 403 reset in 439 ms.
Applying partial POR strategy [true, false, false, true, false]
Stuttering acceptance computed with spot in 178 ms :[p1, (OR (NOT p0) p1), (OR (NOT p0) p1), true, (OR (NOT p0) p1)]
Support contains 3 out of 580 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 580/580 places, 545/545 transitions.
Performed 227 Post agglomeration using F-continuation condition.Transition count delta: 0
Iterating post reduction 0 with 227 rules applied. Total rules applied 227 place count 580 transition count 545
Deduced a syphon composed of 227 places in 3 ms
Applied a total of 227 rules in 179 ms. Remains 580 /580 variables (removed 0) and now considering 545/545 (removed 0) transitions.
[2024-05-25 02:16:45] [INFO ] Redundant transitions in 5 ms returned []
Running 515 sub problems to find dead transitions.
// Phase 1: matrix 545 rows 580 cols
[2024-05-25 02:16:45] [INFO ] Computed 35 invariants in 5 ms
[2024-05-25 02:16:46] [INFO ] State equation strengthened by 227 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/550 variables, 5/5 constraints. Problems are: Problem set: 0 solved, 515 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/550 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 515 unsolved
At refinement iteration 2 (OVERLAPS) 30/580 variables, 30/35 constraints. Problems are: Problem set: 0 solved, 515 unsolved
Error getting values : (error "ParserException while parsing response: (timeout
org.smtlib.IParser$ParserException: Unbalanced parentheses at end of input")
At refinement iteration 3 (INCLUDED_ONLY) 0/580 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 515 unsolved
SMT process timed out in 30207ms, After SMT, problems are : Problem set: 0 solved, 515 unsolved
Search for dead transitions found 0 dead transitions in 30216ms
Starting structural reductions in SI_LTL mode, iteration 1 : 580/580 places, 545/545 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 30412 ms. Remains : 580/580 places, 545/545 transitions.
Support contains 3 out of 580 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 580/580 places, 545/545 transitions.
Applied a total of 0 rules in 27 ms. Remains 580 /580 variables (removed 0) and now considering 545/545 (removed 0) transitions.
// Phase 1: matrix 545 rows 580 cols
[2024-05-25 02:17:16] [INFO ] Computed 35 invariants in 6 ms
[2024-05-25 02:17:16] [INFO ] Implicit Places using invariants in 568 ms returned []
[2024-05-25 02:17:16] [INFO ] Invariant cache hit.
[2024-05-25 02:17:19] [INFO ] Implicit Places using invariants and state equation in 2706 ms returned []
Implicit Place search using SMT with State Equation took 3278 ms to find 0 implicit places.
Running 515 sub problems to find dead transitions.
[2024-05-25 02:17:19] [INFO ] Invariant cache hit.
At refinement iteration 0 (INCLUDED_ONLY) 0/550 variables, 5/5 constraints. Problems are: Problem set: 0 solved, 515 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/550 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 515 unsolved
At refinement iteration 2 (OVERLAPS) 30/580 variables, 30/35 constraints. Problems are: Problem set: 0 solved, 515 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/580 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 515 unsolved
SMT process timed out in 30221ms, After SMT, problems are : Problem set: 0 solved, 515 unsolved
Search for dead transitions found 0 dead transitions in 30231ms
Finished structural reductions in LTL mode , in 1 iterations and 33539 ms. Remains : 580/580 places, 545/545 transitions.
Treatment of property HirschbergSinclair-PT-30-LTLFireability-11 finished in 151270 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F(G((X(F((p1&&F(p2))))||p0))))'
Support contains 6 out of 587 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 587/587 places, 552/552 transitions.
Reduce places removed 27 places and 27 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 218 transitions
Trivial Post-agglo rules discarded 218 transitions
Performed 218 trivial Post agglomeration. Transition count delta: 218
Iterating post reduction 0 with 218 rules applied. Total rules applied 218 place count 560 transition count 307
Reduce places removed 218 places and 0 transitions.
Iterating post reduction 1 with 218 rules applied. Total rules applied 436 place count 342 transition count 307
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 439 place count 339 transition count 304
Iterating global reduction 2 with 3 rules applied. Total rules applied 442 place count 339 transition count 304
Drop transitions (Trivial Post-Agglo cleanup.) removed 1 transitions
Trivial Post-agglo rules discarded 1 transitions
Performed 1 trivial Post agglomeration. Transition count delta: 1
Iterating post reduction 2 with 1 rules applied. Total rules applied 443 place count 339 transition count 303
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 3 with 1 rules applied. Total rules applied 444 place count 338 transition count 303
Applied a total of 444 rules in 51 ms. Remains 338 /587 variables (removed 249) and now considering 303/552 (removed 249) transitions.
// Phase 1: matrix 303 rows 338 cols
[2024-05-25 02:17:49] [INFO ] Computed 35 invariants in 3 ms
[2024-05-25 02:17:50] [INFO ] Implicit Places using invariants in 677 ms returned []
[2024-05-25 02:17:50] [INFO ] Invariant cache hit.
[2024-05-25 02:17:52] [INFO ] Implicit Places using invariants and state equation in 1521 ms returned []
Implicit Place search using SMT with State Equation took 2209 ms to find 0 implicit places.
[2024-05-25 02:17:52] [INFO ] Redundant transitions in 2 ms returned []
Running 253 sub problems to find dead transitions.
[2024-05-25 02:17:52] [INFO ] Invariant cache hit.
At refinement iteration 0 (INCLUDED_ONLY) 0/288 variables, 4/4 constraints. Problems are: Problem set: 0 solved, 253 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/288 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 253 unsolved
At refinement iteration 2 (OVERLAPS) 5/293 variables, 31/35 constraints. Problems are: Problem set: 0 solved, 253 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/293 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 253 unsolved
At refinement iteration 4 (OVERLAPS) 258/551 variables, 293/328 constraints. Problems are: Problem set: 0 solved, 253 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/551 variables, 0/328 constraints. Problems are: Problem set: 0 solved, 253 unsolved
At refinement iteration 6 (OVERLAPS) 0/551 variables, 0/328 constraints. Problems are: Problem set: 0 solved, 253 unsolved
No progress, stopping.
After SMT solving in domain Real declared 551/641 variables, and 328 constraints, problems are : Problem set: 0 solved, 253 unsolved in 25200 ms.
Refiners :[Generalized P Invariants (flows): 35/35 constraints, State Equation: 293/338 constraints, PredecessorRefiner: 253/253 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 253 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/288 variables, 4/4 constraints. Problems are: Problem set: 0 solved, 253 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/288 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 253 unsolved
At refinement iteration 2 (OVERLAPS) 5/293 variables, 31/35 constraints. Problems are: Problem set: 0 solved, 253 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/293 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 253 unsolved
At refinement iteration 4 (OVERLAPS) 258/551 variables, 293/328 constraints. Problems are: Problem set: 0 solved, 253 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/551 variables, 253/581 constraints. Problems are: Problem set: 0 solved, 253 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/551 variables, 0/581 constraints. Problems are: Problem set: 0 solved, 253 unsolved
At refinement iteration 7 (OVERLAPS) 0/551 variables, 0/581 constraints. Problems are: Problem set: 0 solved, 253 unsolved
No progress, stopping.
After SMT solving in domain Int declared 551/641 variables, and 581 constraints, problems are : Problem set: 0 solved, 253 unsolved in 30016 ms.
Refiners :[Generalized P Invariants (flows): 35/35 constraints, State Equation: 293/338 constraints, PredecessorRefiner: 253/253 constraints, Known Traps: 0/0 constraints]
After SMT, in 55268ms problems are : Problem set: 0 solved, 253 unsolved
Search for dead transitions found 0 dead transitions in 55273ms
Starting structural reductions in SI_LTL mode, iteration 1 : 338/587 places, 303/552 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 57544 ms. Remains : 338/587 places, 303/552 transitions.
Stuttering acceptance computed with spot in 143 ms :[(OR (AND (NOT p0) (NOT p2)) (AND (NOT p0) (NOT p1))), (AND (NOT p0) (NOT p2)), (AND (NOT p0) (NOT p1))]
Running random walk in product with property : HirschbergSinclair-PT-30-LTLFireability-12
Product exploration explored 100000 steps with 437 reset in 379 ms.
Product exploration explored 100000 steps with 463 reset in 476 ms.
Computed a total of 338 stabilizing places and 303 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 338 transition count 303
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge : F ( (Ga|G!a) & (Gb|G!b)...)
Knowledge obtained : [(AND p0 (NOT p2) p1), (X (NOT p2)), (X (AND p0 (NOT p2))), (X (NOT (AND p0 (NOT p1)))), (X (NOT (AND (NOT p0) (NOT p1)))), (X (NOT (AND (NOT p0) (NOT p2)))), (X p0), (X p1), (X (X (NOT p2))), (X (X (AND p0 (NOT p2)))), (X (X (NOT (AND p0 (NOT p1))))), (X (X (NOT (AND (NOT p0) (NOT p1))))), (X (X (NOT (AND (NOT p0) (NOT p2))))), (X (X p0)), (X (X p1)), (F (G p0)), (F (G (NOT p2))), (F (G p1))]
False Knowledge obtained : []
Property proved to be true thanks to knowledge (Minato strategy)
Knowledge based reduction with 18 factoid took 30 ms. Reduced automaton from 3 states, 7 edges and 3 AP (stutter insensitive) to 1 states, 0 edges and 0 AP (stutter insensitive).
FORMULA HirschbergSinclair-PT-30-LTLFireability-12 TRUE TECHNIQUES KNOWLEDGE
Treatment of property HirschbergSinclair-PT-30-LTLFireability-12 finished in 58815 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((X(X((X(p0)||G(p1))))&&G((p2||X(X(G(p3)))))))'
Support contains 7 out of 587 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 587/587 places, 552/552 transitions.
Discarding 4 places :
Symmetric choice reduction at 0 with 4 rule applications. Total rules 4 place count 583 transition count 548
Iterating global reduction 0 with 4 rules applied. Total rules applied 8 place count 583 transition count 548
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 9 place count 582 transition count 547
Iterating global reduction 0 with 1 rules applied. Total rules applied 10 place count 582 transition count 547
Applied a total of 10 rules in 41 ms. Remains 582 /587 variables (removed 5) and now considering 547/552 (removed 5) transitions.
// Phase 1: matrix 547 rows 582 cols
[2024-05-25 02:18:48] [INFO ] Computed 35 invariants in 5 ms
[2024-05-25 02:18:49] [INFO ] Implicit Places using invariants in 713 ms returned []
[2024-05-25 02:18:49] [INFO ] Invariant cache hit.
[2024-05-25 02:18:52] [INFO ] Implicit Places using invariants and state equation in 2771 ms returned []
Implicit Place search using SMT with State Equation took 3491 ms to find 0 implicit places.
Running 517 sub problems to find dead transitions.
[2024-05-25 02:18:52] [INFO ] Invariant cache hit.
At refinement iteration 0 (INCLUDED_ONLY) 0/552 variables, 5/5 constraints. Problems are: Problem set: 0 solved, 517 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/552 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 517 unsolved
At refinement iteration 2 (OVERLAPS) 30/582 variables, 30/35 constraints. Problems are: Problem set: 0 solved, 517 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/582 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 517 unsolved
SMT process timed out in 30204ms, After SMT, problems are : Problem set: 0 solved, 517 unsolved
Search for dead transitions found 0 dead transitions in 30210ms
Starting structural reductions in LTL mode, iteration 1 : 582/587 places, 547/552 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 33744 ms. Remains : 582/587 places, 547/552 transitions.
Stuttering acceptance computed with spot in 534 ms :[(OR (AND (NOT p0) (NOT p1)) (AND (NOT p2) (NOT p3))), (AND (NOT p0) (NOT p1)), (NOT p3), (AND (NOT p3) (NOT p2)), (AND (NOT p0) (NOT p1)), (NOT p0), (AND (NOT p1) (NOT p0)), true, (NOT p3), (NOT p1)]
Running random walk in product with property : HirschbergSinclair-PT-30-LTLFireability-14
Entered a terminal (fully accepting) state of product in 2 steps with 0 reset in 0 ms.
FORMULA HirschbergSinclair-PT-30-LTLFireability-14 FALSE TECHNIQUES STUTTER_TEST
Treatment of property HirschbergSinclair-PT-30-LTLFireability-14 finished in 34324 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F((p0&&G(p1))))'
Support contains 2 out of 587 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 587/587 places, 552/552 transitions.
Reduce places removed 30 places and 30 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 237 transitions
Trivial Post-agglo rules discarded 237 transitions
Performed 237 trivial Post agglomeration. Transition count delta: 237
Iterating post reduction 0 with 237 rules applied. Total rules applied 237 place count 557 transition count 285
Reduce places removed 237 places and 0 transitions.
Iterating post reduction 1 with 237 rules applied. Total rules applied 474 place count 320 transition count 285
Discarding 4 places :
Symmetric choice reduction at 2 with 4 rule applications. Total rules 478 place count 316 transition count 281
Iterating global reduction 2 with 4 rules applied. Total rules applied 482 place count 316 transition count 281
Drop transitions (Trivial Post-Agglo cleanup.) removed 3 transitions
Trivial Post-agglo rules discarded 3 transitions
Performed 3 trivial Post agglomeration. Transition count delta: 3
Iterating post reduction 2 with 3 rules applied. Total rules applied 485 place count 316 transition count 278
Reduce places removed 3 places and 0 transitions.
Iterating post reduction 3 with 3 rules applied. Total rules applied 488 place count 313 transition count 278
Applied a total of 488 rules in 38 ms. Remains 313 /587 variables (removed 274) and now considering 278/552 (removed 274) transitions.
// Phase 1: matrix 278 rows 313 cols
[2024-05-25 02:19:23] [INFO ] Computed 35 invariants in 3 ms
[2024-05-25 02:19:23] [INFO ] Implicit Places using invariants in 667 ms returned []
[2024-05-25 02:19:23] [INFO ] Invariant cache hit.
[2024-05-25 02:19:25] [INFO ] Implicit Places using invariants and state equation in 1342 ms returned []
Implicit Place search using SMT with State Equation took 2014 ms to find 0 implicit places.
[2024-05-25 02:19:25] [INFO ] Redundant transitions in 2 ms returned []
Running 219 sub problems to find dead transitions.
[2024-05-25 02:19:25] [INFO ] Invariant cache hit.
At refinement iteration 0 (INCLUDED_ONLY) 0/254 variables, 4/4 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/254 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 2 (OVERLAPS) 2/256 variables, 31/35 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/256 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 4 (OVERLAPS) 222/478 variables, 256/291 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/478 variables, 0/291 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 6 (OVERLAPS) 1/479 variables, 1/292 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/479 variables, 0/292 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 8 (OVERLAPS) 0/479 variables, 0/292 constraints. Problems are: Problem set: 0 solved, 219 unsolved
No progress, stopping.
After SMT solving in domain Real declared 479/591 variables, and 292 constraints, problems are : Problem set: 0 solved, 219 unsolved in 23277 ms.
Refiners :[Generalized P Invariants (flows): 35/35 constraints, State Equation: 257/313 constraints, PredecessorRefiner: 219/219 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 219 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/254 variables, 4/4 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/254 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 2 (OVERLAPS) 2/256 variables, 31/35 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/256 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 4 (OVERLAPS) 222/478 variables, 256/291 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/478 variables, 219/510 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/478 variables, 0/510 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 7 (OVERLAPS) 1/479 variables, 1/511 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/479 variables, 0/511 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 9 (OVERLAPS) 0/479 variables, 0/511 constraints. Problems are: Problem set: 0 solved, 219 unsolved
No progress, stopping.
After SMT solving in domain Int declared 479/591 variables, and 511 constraints, problems are : Problem set: 0 solved, 219 unsolved in 29920 ms.
Refiners :[Generalized P Invariants (flows): 35/35 constraints, State Equation: 257/313 constraints, PredecessorRefiner: 219/219 constraints, Known Traps: 0/0 constraints]
After SMT, in 53236ms problems are : Problem set: 0 solved, 219 unsolved
Search for dead transitions found 0 dead transitions in 53240ms
Starting structural reductions in SI_LTL mode, iteration 1 : 313/587 places, 278/552 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 55302 ms. Remains : 313/587 places, 278/552 transitions.
Stuttering acceptance computed with spot in 118 ms :[(OR (NOT p1) (NOT p0)), (NOT p1)]
Running random walk in product with property : HirschbergSinclair-PT-30-LTLFireability-15
Product exploration explored 100000 steps with 326 reset in 674 ms.
Product exploration explored 100000 steps with 326 reset in 406 ms.
Computed a total of 313 stabilizing places and 278 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 313 transition count 278
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge : F ( (Ga|G!a) & (Gb|G!b)...)
Knowledge obtained : [(AND (NOT p0) p1), (X (NOT (AND p0 p1))), (X (NOT p0)), (X (OR (NOT p0) (NOT p1))), (X p1), (X (X (NOT (AND p0 p1)))), (X (X (NOT p0))), (X (X (OR (NOT p0) (NOT p1)))), (F (G (NOT p0))), (F (G p1))]
False Knowledge obtained : [(X (X p1)), (X (X (NOT p1)))]
Knowledge based reduction with 10 factoid took 306 ms. Reduced automaton from 2 states, 4 edges and 2 AP (stutter insensitive) to 2 states, 4 edges and 2 AP (stutter insensitive).
Stuttering acceptance computed with spot in 116 ms :[(OR (NOT p0) (NOT p1)), (NOT p1)]
Reduction of identical properties reduced properties to check from 4 to 3
RANDOM walk for 875 steps (0 resets) in 10 ms. (79 steps per ms) remains 0/3 properties
Knowledge obtained : [(AND (NOT p0) p1), (X (NOT (AND p0 p1))), (X (NOT p0)), (X (OR (NOT p0) (NOT p1))), (X p1), (X (X (NOT (AND p0 p1)))), (X (X (NOT p0))), (X (X (OR (NOT p0) (NOT p1)))), (F (G (NOT p0))), (F (G p1))]
False Knowledge obtained : [(X (X p1)), (X (X (NOT p1))), (F (NOT p1)), (F (NOT (OR (NOT p1) (NOT p0)))), (F p0), (F (NOT (OR (NOT p1) (NOT p0))))]
Knowledge based reduction with 10 factoid took 563 ms. Reduced automaton from 2 states, 4 edges and 2 AP (stutter insensitive) to 2 states, 4 edges and 2 AP (stutter insensitive).
Stuttering acceptance computed with spot in 113 ms :[(OR (NOT p0) (NOT p1)), (NOT p1)]
Stuttering acceptance computed with spot in 104 ms :[(OR (NOT p0) (NOT p1)), (NOT p1)]
[2024-05-25 02:20:20] [INFO ] Invariant cache hit.
[2024-05-25 02:20:21] [INFO ] [Real]Absence check using 0 positive and 35 generalized place invariants in 126 ms returned sat
[2024-05-25 02:20:22] [INFO ] [Real]Absence check using state equation in 1181 ms returned sat
[2024-05-25 02:20:22] [INFO ] Solution in real domain found non-integer solution.
[2024-05-25 02:20:23] [INFO ] [Nat]Absence check using 0 positive and 35 generalized place invariants in 158 ms returned sat
[2024-05-25 02:20:23] [INFO ] [Nat]Absence check using state equation in 217 ms returned sat
[2024-05-25 02:20:23] [INFO ] Computed and/alt/rep : 219/225/219 causal constraints (skipped 0 transitions) in 35 ms.
[2024-05-25 02:20:24] [INFO ] Added : 122 causal constraints over 25 iterations in 964 ms. Result :sat
Could not prove EG (NOT p0)
Support contains 2 out of 313 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 313/313 places, 278/278 transitions.
Applied a total of 0 rules in 14 ms. Remains 313 /313 variables (removed 0) and now considering 278/278 (removed 0) transitions.
[2024-05-25 02:20:24] [INFO ] Invariant cache hit.
[2024-05-25 02:20:24] [INFO ] Implicit Places using invariants in 585 ms returned []
[2024-05-25 02:20:24] [INFO ] Invariant cache hit.
[2024-05-25 02:20:26] [INFO ] Implicit Places using invariants and state equation in 1416 ms returned []
Implicit Place search using SMT with State Equation took 2009 ms to find 0 implicit places.
[2024-05-25 02:20:26] [INFO ] Redundant transitions in 2 ms returned []
Running 219 sub problems to find dead transitions.
[2024-05-25 02:20:26] [INFO ] Invariant cache hit.
At refinement iteration 0 (INCLUDED_ONLY) 0/254 variables, 4/4 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/254 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 2 (OVERLAPS) 2/256 variables, 31/35 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/256 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 4 (OVERLAPS) 222/478 variables, 256/291 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/478 variables, 0/291 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 6 (OVERLAPS) 1/479 variables, 1/292 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/479 variables, 0/292 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 8 (OVERLAPS) 0/479 variables, 0/292 constraints. Problems are: Problem set: 0 solved, 219 unsolved
No progress, stopping.
After SMT solving in domain Real declared 479/591 variables, and 292 constraints, problems are : Problem set: 0 solved, 219 unsolved in 23256 ms.
Refiners :[Generalized P Invariants (flows): 35/35 constraints, State Equation: 257/313 constraints, PredecessorRefiner: 219/219 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 219 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/254 variables, 4/4 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/254 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 2 (OVERLAPS) 2/256 variables, 31/35 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/256 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 4 (OVERLAPS) 222/478 variables, 256/291 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/478 variables, 219/510 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/478 variables, 0/510 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 7 (OVERLAPS) 1/479 variables, 1/511 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/479 variables, 0/511 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 9 (OVERLAPS) 0/479 variables, 0/511 constraints. Problems are: Problem set: 0 solved, 219 unsolved
No progress, stopping.
After SMT solving in domain Int declared 479/591 variables, and 511 constraints, problems are : Problem set: 0 solved, 219 unsolved in 29841 ms.
Refiners :[Generalized P Invariants (flows): 35/35 constraints, State Equation: 257/313 constraints, PredecessorRefiner: 219/219 constraints, Known Traps: 0/0 constraints]
After SMT, in 53135ms problems are : Problem set: 0 solved, 219 unsolved
Search for dead transitions found 0 dead transitions in 53139ms
Finished structural reductions in SI_LTL mode , in 1 iterations and 55175 ms. Remains : 313/313 places, 278/278 transitions.
Computed a total of 313 stabilizing places and 278 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 313 transition count 278
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge : F ( (Ga|G!a) & (Gb|G!b)...)
Knowledge obtained : [(AND p1 (NOT p0)), (X (OR (NOT p1) (NOT p0))), (X (NOT (AND p1 p0))), (X (NOT p0)), (X p1), (X (X (OR (NOT p1) (NOT p0)))), (X (X (NOT (AND p1 p0)))), (X (X (NOT p0))), (F (G p1)), (F (G (NOT p0)))]
False Knowledge obtained : [(X (X p1)), (X (X (NOT p1)))]
Knowledge based reduction with 10 factoid took 332 ms. Reduced automaton from 2 states, 4 edges and 2 AP (stutter insensitive) to 2 states, 4 edges and 2 AP (stutter insensitive).
Stuttering acceptance computed with spot in 109 ms :[(OR (NOT p1) (NOT p0)), (NOT p1)]
Reduction of identical properties reduced properties to check from 4 to 3
RANDOM walk for 861 steps (0 resets) in 11 ms. (71 steps per ms) remains 0/3 properties
Knowledge obtained : [(AND p1 (NOT p0)), (X (OR (NOT p1) (NOT p0))), (X (NOT (AND p1 p0))), (X (NOT p0)), (X p1), (X (X (OR (NOT p1) (NOT p0)))), (X (X (NOT (AND p1 p0)))), (X (X (NOT p0))), (F (G p1)), (F (G (NOT p0)))]
False Knowledge obtained : [(X (X p1)), (X (X (NOT p1))), (F (NOT p1)), (F (NOT (OR (NOT p0) (NOT p1)))), (F (NOT (OR (NOT p0) (NOT p1)))), (F p0)]
Knowledge based reduction with 10 factoid took 555 ms. Reduced automaton from 2 states, 4 edges and 2 AP (stutter insensitive) to 2 states, 4 edges and 2 AP (stutter insensitive).
Stuttering acceptance computed with spot in 107 ms :[(OR (NOT p1) (NOT p0)), (NOT p1)]
Stuttering acceptance computed with spot in 101 ms :[(OR (NOT p1) (NOT p0)), (NOT p1)]
[2024-05-25 02:21:20] [INFO ] Invariant cache hit.
[2024-05-25 02:21:21] [INFO ] [Real]Absence check using 0 positive and 35 generalized place invariants in 126 ms returned sat
[2024-05-25 02:21:22] [INFO ] [Real]Absence check using state equation in 1386 ms returned sat
[2024-05-25 02:21:22] [INFO ] Solution in real domain found non-integer solution.
[2024-05-25 02:21:23] [INFO ] [Nat]Absence check using 0 positive and 35 generalized place invariants in 161 ms returned sat
[2024-05-25 02:21:23] [INFO ] [Nat]Absence check using state equation in 237 ms returned sat
[2024-05-25 02:21:23] [INFO ] Computed and/alt/rep : 219/225/219 causal constraints (skipped 0 transitions) in 34 ms.
[2024-05-25 02:21:24] [INFO ] Added : 122 causal constraints over 25 iterations in 916 ms. Result :sat
Could not prove EG (NOT p0)
Stuttering acceptance computed with spot in 107 ms :[(OR (NOT p1) (NOT p0)), (NOT p1)]
Product exploration explored 100000 steps with 326 reset in 435 ms.
Product exploration explored 100000 steps with 326 reset in 340 ms.
Support contains 2 out of 313 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 313/313 places, 278/278 transitions.
Applied a total of 0 rules in 8 ms. Remains 313 /313 variables (removed 0) and now considering 278/278 (removed 0) transitions.
[2024-05-25 02:21:25] [INFO ] Invariant cache hit.
[2024-05-25 02:21:25] [INFO ] Implicit Places using invariants in 484 ms returned []
[2024-05-25 02:21:25] [INFO ] Invariant cache hit.
[2024-05-25 02:21:27] [INFO ] Implicit Places using invariants and state equation in 1137 ms returned []
Implicit Place search using SMT with State Equation took 1629 ms to find 0 implicit places.
[2024-05-25 02:21:27] [INFO ] Redundant transitions in 1 ms returned []
Running 219 sub problems to find dead transitions.
[2024-05-25 02:21:27] [INFO ] Invariant cache hit.
At refinement iteration 0 (INCLUDED_ONLY) 0/254 variables, 4/4 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/254 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 2 (OVERLAPS) 2/256 variables, 31/35 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/256 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 4 (OVERLAPS) 222/478 variables, 256/291 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/478 variables, 0/291 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 6 (OVERLAPS) 1/479 variables, 1/292 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/479 variables, 0/292 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 8 (OVERLAPS) 0/479 variables, 0/292 constraints. Problems are: Problem set: 0 solved, 219 unsolved
No progress, stopping.
After SMT solving in domain Real declared 479/591 variables, and 292 constraints, problems are : Problem set: 0 solved, 219 unsolved in 23413 ms.
Refiners :[Generalized P Invariants (flows): 35/35 constraints, State Equation: 257/313 constraints, PredecessorRefiner: 219/219 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 219 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/254 variables, 4/4 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/254 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 2 (OVERLAPS) 2/256 variables, 31/35 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/256 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 4 (OVERLAPS) 222/478 variables, 256/291 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/478 variables, 219/510 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/478 variables, 0/510 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 7 (OVERLAPS) 1/479 variables, 1/511 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/479 variables, 0/511 constraints. Problems are: Problem set: 0 solved, 219 unsolved
At refinement iteration 9 (OVERLAPS) 0/479 variables, 0/511 constraints. Problems are: Problem set: 0 solved, 219 unsolved
No progress, stopping.
After SMT solving in domain Int declared 479/591 variables, and 511 constraints, problems are : Problem set: 0 solved, 219 unsolved in 30015 ms.
Refiners :[Generalized P Invariants (flows): 35/35 constraints, State Equation: 257/313 constraints, PredecessorRefiner: 219/219 constraints, Known Traps: 0/0 constraints]
After SMT, in 53465ms problems are : Problem set: 0 solved, 219 unsolved
Search for dead transitions found 0 dead transitions in 53469ms
Finished structural reductions in SI_LTL mode , in 1 iterations and 55121 ms. Remains : 313/313 places, 278/278 transitions.
Treatment of property HirschbergSinclair-PT-30-LTLFireability-15 finished in 177654 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((p0 U p1))'
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X((p0||X(((!p0||X(!p1)||G(p2)) U (p0&&(!p0||X(!p1)||G(p2))))))))'
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F((p0&&G(p1))))'
[2024-05-25 02:22:21] [INFO ] Flatten gal took : 39 ms
[2024-05-25 02:22:21] [INFO ] Export to MCC of 3 properties in file /home/mcc/execution/LTLFireability.sr.xml took 2 ms.
[2024-05-25 02:22:21] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml of net with 587 places, 552 transitions and 1659 arcs took 14 ms.
Total runtime 942028 ms.
There are residual formulas that ITS could not solve within timeout
----------------------------------------------------------------------
GreatSPN-meddly tool, MCC 2023
----------------------------------------------------------------------
Running HirschbergSinclair-PT-30
IS_COLORED=
IS_NUPN=
LOADING PETRI NET FILE /home/mcc/execution/411/model.pnml (PNML) ...
PNML VERSION 2009, P/T NET.
COLOR CLASSES: 0
CONSTANTS: 0
PLACES: 587
TRANSITIONS: 552
COLOR VARS: 0
MEASURES: 0
LOADING TIME: [User 0.020s, Sys 0.004s]
SAVING FILE /home/mcc/execution/411/model (.net / .def) ...
EXPORT TIME: [User 0.003s, Sys 0.001s]
----------------------------------------------------------------------
GreatSPN/Meddly.
Copyright (C) 1987-2022, University of Torino, Italy.
website: https://github.com/greatspn/SOURCES
Based on MEDDLY version 0.16.0
Copyright (C) 2009, Iowa State University Research Foundation, Inc.
website: http://meddly.sourceforge.net
Process ID: 1695
MODEL NAME: /home/mcc/execution/411/model
587 places, 552 transitions.
Creating all event NSFs..
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Split: SplitSubtract
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BK_TIME_CONFINEMENT_REACHED
--------------------
content from stderr:
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
+ export PYTHONPATH=/home/mcc/BenchKit/itstools/pylibs
+ PYTHONPATH=/home/mcc/BenchKit/itstools/pylibs
+ export LD_LIBRARY_PATH=/home/mcc/BenchKit/itstools/pylibs:
+ LD_LIBRARY_PATH=/home/mcc/BenchKit/itstools/pylibs:
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202405141337.jar
+ VERSION=202405141337
+ echo 'Running Version 202405141337'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination LTLFireability -timeout 360 -rebuildPNML
MEDDLY ERROR: Insufficient memory
Sequence of Actions to be Executed by the VM
This is useful if one wants to reexecute the tool in the VM from the submitted image disk.
set -x
# this is for BenchKit: configuration of major elements for the test
export BK_INPUT="HirschbergSinclair-PT-30"
export BK_EXAMINATION="LTLFireability"
export BK_TOOL="greatspnxred"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"
export BK_BIN_PATH="/home/mcc/BenchKit/bin/"
# this is specific to your benchmark or test
export BIN_DIR="$HOME/BenchKit/bin"
# remove the execution directoty if it exists (to avoid increse of .vmdk images)
if [ -d execution ] ; then
rm -rf execution
fi
# this is for BenchKit: explicit launching of the test
echo "====================================================================="
echo " Generated by BenchKit 2-5568"
echo " Executing tool greatspnxred"
echo " Input is HirschbergSinclair-PT-30, examination is LTLFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r201-smll-171649586600100"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"
tar xzf /home/mcc/BenchKit/INPUTS/HirschbergSinclair-PT-30.tgz
mv HirschbergSinclair-PT-30 execution
cd execution
if [ "LTLFireability" = "ReachabilityDeadlock" ] || [ "LTLFireability" = "UpperBounds" ] || [ "LTLFireability" = "QuasiLiveness" ] || [ "LTLFireability" = "StableMarking" ] || [ "LTLFireability" = "Liveness" ] || [ "LTLFireability" = "OneSafe" ] || [ "LTLFireability" = "StateSpace" ]; then
rm -f GenericPropertiesVerdict.xml
fi
pwd
ls -lh
echo
echo "--------------------"
echo "content from stdout:"
echo
echo "=== Data for post analysis generated by BenchKit (invocation template)"
echo
if [ "LTLFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "LTLFireability" != "StateSpace" ] ; then
echo "The expected result is a vector of booleans"
echo BOOL_VECTOR
else
echo "no data necessary for post analysis"
fi
echo
if [ -f "LTLFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property LTLFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "LTLFireability.xml" ] ; then # for cunf (txt files deleted;-)
echo echo "here is the order used to build the result vector(from xml file)"
for x in $(grep '
echo "FORMULA_NAME $x"
done
elif [ "LTLFireability" = "ReachabilityDeadlock" ] || [ "LTLFireability" = "QuasiLiveness" ] || [ "LTLFireability" = "StableMarking" ] || [ "LTLFireability" = "Liveness" ] || [ "LTLFireability" = "OneSafe" ] ; then
echo "FORMULA_NAME LTLFireability"
fi
echo
echo "=== Now, execution of the tool begins"
echo
echo -n "BK_START "
date -u +%s%3N
echo
timeout -s 9 $BK_TIME_CONFINEMENT bash -c "/home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n \"BK_STOP \" ; date -u +%s%3N"
if [ $? -eq 137 ] ; then
echo
echo "BK_TIME_CONFINEMENT_REACHED"
fi
echo
echo "--------------------"
echo "content from stderr:"
echo
cat STDERR ;