fond
Model Checking Contest 2023
13th edition, Paris, France, April 26, 2023 (at TOOLympics II)
Execution of r009-oct2-167813598200638
Last Updated
May 14, 2023

About the Execution of LTSMin+red for AutonomousCar-PT-07b

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
554.247 42567.00 97250.00 99.60 TTTTFFTFTFFFFFFF normal

Execution Chart

We display below the execution chart for this examination (boot time has been removed).

Trace from the execution

Formatting '/data/fkordon/mcc2023-input.r009-oct2-167813598200638.qcow2', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=4294967296 backing_file=/data/fkordon/mcc2023-input.qcow2 backing_fmt=qcow2 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
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=====================================================================
Generated by BenchKit 2-5348
Executing tool ltsminxred
Input is AutonomousCar-PT-07b, examination is ReachabilityCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r009-oct2-167813598200638
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 780K
-rw-r--r-- 1 mcc users 6.6K Feb 25 12:56 CTLCardinality.txt
-rw-r--r-- 1 mcc users 72K Feb 25 12:56 CTLCardinality.xml
-rw-r--r-- 1 mcc users 4.9K Feb 25 12:56 CTLFireability.txt
-rw-r--r-- 1 mcc users 42K Feb 25 12:56 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.9K Feb 25 15:34 LTLCardinality.txt
-rw-r--r-- 1 mcc users 29K Feb 25 15:34 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K Feb 25 15:34 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K Feb 25 15:34 LTLFireability.xml
-rw-r--r-- 1 mcc users 11K Feb 25 12:57 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 111K Feb 25 12:57 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 11K Feb 25 12:57 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 95K Feb 25 12:57 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Feb 25 15:34 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Feb 25 15:34 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 equiv_col
-rw-r--r-- 1 mcc users 4 Mar 5 18:22 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 iscolored
-rw-r--r-- 1 mcc users 334K Mar 5 18:22 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 AutonomousCar-PT-07b-ReachabilityCardinality-00
FORMULA_NAME AutonomousCar-PT-07b-ReachabilityCardinality-01
FORMULA_NAME AutonomousCar-PT-07b-ReachabilityCardinality-02
FORMULA_NAME AutonomousCar-PT-07b-ReachabilityCardinality-03
FORMULA_NAME AutonomousCar-PT-07b-ReachabilityCardinality-04
FORMULA_NAME AutonomousCar-PT-07b-ReachabilityCardinality-05
FORMULA_NAME AutonomousCar-PT-07b-ReachabilityCardinality-06
FORMULA_NAME AutonomousCar-PT-07b-ReachabilityCardinality-07
FORMULA_NAME AutonomousCar-PT-07b-ReachabilityCardinality-08
FORMULA_NAME AutonomousCar-PT-07b-ReachabilityCardinality-09
FORMULA_NAME AutonomousCar-PT-07b-ReachabilityCardinality-10
FORMULA_NAME AutonomousCar-PT-07b-ReachabilityCardinality-11
FORMULA_NAME AutonomousCar-PT-07b-ReachabilityCardinality-12
FORMULA_NAME AutonomousCar-PT-07b-ReachabilityCardinality-13
FORMULA_NAME AutonomousCar-PT-07b-ReachabilityCardinality-14
FORMULA_NAME AutonomousCar-PT-07b-ReachabilityCardinality-15

=== Now, execution of the tool begins

BK_START 1678638859861

bash -c /home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n "BK_STOP " ; date -u +%s%3N
Invoking MCC driver with
BK_TOOL=ltsminxred
BK_EXAMINATION=ReachabilityCardinality
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=AutonomousCar-PT-07b
Applying reductions before tool ltsmin
Invoking reducer
Running Version 202303021504
[2023-03-12 16:34:23] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityCardinality, -timeout, 360, -rebuildPNML]
[2023-03-12 16:34:23] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-12 16:34:23] [INFO ] Load time of PNML (sax parser for PT used): 128 ms
[2023-03-12 16:34:23] [INFO ] Transformed 323 places.
[2023-03-12 16:34:23] [INFO ] Transformed 846 transitions.
[2023-03-12 16:34:23] [INFO ] Found NUPN structural information;
[2023-03-12 16:34:23] [INFO ] Parsed PT model containing 323 places and 846 transitions and 5865 arcs in 327 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityCardinality.xml in 11 ms.
Working with output stream class java.io.PrintStream
FORMULA AutonomousCar-PT-07b-ReachabilityCardinality-13 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Incomplete random walk after 10000 steps, including 72 resets, run finished after 435 ms. (steps per millisecond=22 ) properties (out of 15) seen :9
FORMULA AutonomousCar-PT-07b-ReachabilityCardinality-15 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA AutonomousCar-PT-07b-ReachabilityCardinality-10 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA AutonomousCar-PT-07b-ReachabilityCardinality-09 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA AutonomousCar-PT-07b-ReachabilityCardinality-07 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA AutonomousCar-PT-07b-ReachabilityCardinality-06 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA AutonomousCar-PT-07b-ReachabilityCardinality-04 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA AutonomousCar-PT-07b-ReachabilityCardinality-03 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA AutonomousCar-PT-07b-ReachabilityCardinality-01 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA AutonomousCar-PT-07b-ReachabilityCardinality-00 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
Incomplete Best-First random walk after 10001 steps, including 16 resets, run finished after 57 ms. (steps per millisecond=175 ) properties (out of 6) seen :0
Incomplete Best-First random walk after 10001 steps, including 14 resets, run finished after 61 ms. (steps per millisecond=163 ) properties (out of 6) seen :0
Incomplete Best-First random walk after 10001 steps, including 17 resets, run finished after 67 ms. (steps per millisecond=149 ) properties (out of 6) seen :0
Incomplete Best-First random walk after 10000 steps, including 15 resets, run finished after 53 ms. (steps per millisecond=188 ) properties (out of 6) seen :0
Incomplete Best-First random walk after 10001 steps, including 17 resets, run finished after 53 ms. (steps per millisecond=188 ) properties (out of 6) seen :0
Incomplete Best-First random walk after 10000 steps, including 16 resets, run finished after 50 ms. (steps per millisecond=200 ) properties (out of 6) seen :0
Running SMT prover for 6 properties.
// Phase 1: matrix 846 rows 323 cols
[2023-03-12 16:34:24] [INFO ] Computed 12 place invariants in 25 ms
[2023-03-12 16:34:25] [INFO ] After 400ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:6
[2023-03-12 16:34:25] [INFO ] [Nat]Absence check using 12 positive place invariants in 26 ms returned sat
[2023-03-12 16:34:26] [INFO ] After 605ms SMT Verify possible using state equation in natural domain returned unsat :2 sat :4
[2023-03-12 16:34:27] [INFO ] Deduced a trap composed of 35 places in 785 ms of which 18 ms to minimize.
[2023-03-12 16:34:27] [INFO ] Deduced a trap composed of 45 places in 463 ms of which 1 ms to minimize.
[2023-03-12 16:34:27] [INFO ] Deduced a trap composed of 49 places in 224 ms of which 1 ms to minimize.
[2023-03-12 16:34:28] [INFO ] Deduced a trap composed of 48 places in 267 ms of which 2 ms to minimize.
[2023-03-12 16:34:28] [INFO ] Trap strengthening (SAT) tested/added 5/4 trap constraints in 1911 ms
[2023-03-12 16:34:28] [INFO ] Deduced a trap composed of 15 places in 512 ms of which 14 ms to minimize.
[2023-03-12 16:34:29] [INFO ] Deduced a trap composed of 35 places in 327 ms of which 1 ms to minimize.
[2023-03-12 16:34:29] [INFO ] Deduced a trap composed of 35 places in 341 ms of which 1 ms to minimize.
[2023-03-12 16:34:30] [INFO ] Deduced a trap composed of 35 places in 404 ms of which 9 ms to minimize.
[2023-03-12 16:34:30] [INFO ] Deduced a trap composed of 7 places in 449 ms of which 1 ms to minimize.
[2023-03-12 16:34:30] [INFO ] Trap strengthening (SAT) tested/added 6/5 trap constraints in 2231 ms
[2023-03-12 16:34:30] [INFO ] After 5159ms SMT Verify possible using trap constraints in natural domain returned unsat :2 sat :4
Attempting to minimize the solution found.
Minimization took 299 ms.
[2023-03-12 16:34:31] [INFO ] After 5773ms SMT Verify possible using all constraints in natural domain returned unsat :2 sat :4
FORMULA AutonomousCar-PT-07b-ReachabilityCardinality-11 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA AutonomousCar-PT-07b-ReachabilityCardinality-08 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
Fused 6 Parikh solutions to 4 different solutions.
Parikh walk visited 0 properties in 81 ms.
Support contains 62 out of 323 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 323/323 places, 846/846 transitions.
Drop transitions removed 84 transitions
Trivial Post-agglo rules discarded 84 transitions
Performed 84 trivial Post agglomeration. Transition count delta: 84
Iterating post reduction 0 with 84 rules applied. Total rules applied 84 place count 323 transition count 762
Reduce places removed 84 places and 0 transitions.
Ensure Unique test removed 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Drop transitions removed 3 transitions
Trivial Post-agglo rules discarded 3 transitions
Performed 3 trivial Post agglomeration. Transition count delta: 3
Iterating post reduction 1 with 92 rules applied. Total rules applied 176 place count 239 transition count 754
Reduce places removed 3 places and 0 transitions.
Performed 21 Post agglomeration using F-continuation condition.Transition count delta: 21
Iterating post reduction 2 with 24 rules applied. Total rules applied 200 place count 236 transition count 733
Reduce places removed 21 places and 0 transitions.
Ensure Unique test removed 3 transitions
Reduce isomorphic transitions removed 3 transitions.
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Iterating post reduction 3 with 26 rules applied. Total rules applied 226 place count 215 transition count 728
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 4 with 2 rules applied. Total rules applied 228 place count 213 transition count 728
Performed 13 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 5 with 13 Pre rules applied. Total rules applied 228 place count 213 transition count 715
Deduced a syphon composed of 13 places in 2 ms
Reduce places removed 13 places and 0 transitions.
Iterating global reduction 5 with 26 rules applied. Total rules applied 254 place count 200 transition count 715
Discarding 19 places :
Symmetric choice reduction at 5 with 19 rule applications. Total rules 273 place count 181 transition count 696
Iterating global reduction 5 with 19 rules applied. Total rules applied 292 place count 181 transition count 696
Ensure Unique test removed 198 transitions
Reduce isomorphic transitions removed 198 transitions.
Iterating post reduction 5 with 198 rules applied. Total rules applied 490 place count 181 transition count 498
Performed 2 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 6 with 2 Pre rules applied. Total rules applied 490 place count 181 transition count 496
Deduced a syphon composed of 2 places in 1 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 6 with 4 rules applied. Total rules applied 494 place count 179 transition count 496
Discarding 1 places :
Symmetric choice reduction at 6 with 1 rule applications. Total rules 495 place count 178 transition count 489
Iterating global reduction 6 with 1 rules applied. Total rules applied 496 place count 178 transition count 489
Performed 26 Post agglomeration using F-continuation condition with reduction of 1 identical transitions.
Deduced a syphon composed of 26 places in 1 ms
Reduce places removed 26 places and 0 transitions.
Iterating global reduction 6 with 52 rules applied. Total rules applied 548 place count 152 transition count 462
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 0
Deduced a syphon composed of 1 places in 1 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 6 with 2 rules applied. Total rules applied 550 place count 151 transition count 462
Drop transitions removed 4 transitions
Redundant transition composition rules discarded 4 transitions
Iterating global reduction 6 with 4 rules applied. Total rules applied 554 place count 151 transition count 458
Free-agglomeration rule applied 11 times.
Iterating global reduction 6 with 11 rules applied. Total rules applied 565 place count 151 transition count 447
Reduce places removed 11 places and 0 transitions.
Iterating post reduction 6 with 11 rules applied. Total rules applied 576 place count 140 transition count 447
Partial Free-agglomeration rule applied 1 times.
Drop transitions removed 1 transitions
Iterating global reduction 7 with 1 rules applied. Total rules applied 577 place count 140 transition count 447
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 7 with 1 rules applied. Total rules applied 578 place count 139 transition count 446
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 7 with 1 rules applied. Total rules applied 579 place count 138 transition count 446
Applied a total of 579 rules in 264 ms. Remains 138 /323 variables (removed 185) and now considering 446/846 (removed 400) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 266 ms. Remains : 138/323 places, 446/846 transitions.
Incomplete random walk after 10000 steps, including 248 resets, run finished after 186 ms. (steps per millisecond=53 ) properties (out of 4) seen :0
Incomplete Best-First random walk after 10001 steps, including 23 resets, run finished after 41 ms. (steps per millisecond=243 ) properties (out of 4) seen :1
FORMULA AutonomousCar-PT-07b-ReachabilityCardinality-12 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
Incomplete Best-First random walk after 10001 steps, including 39 resets, run finished after 33 ms. (steps per millisecond=303 ) properties (out of 3) seen :0
Incomplete Best-First random walk after 10001 steps, including 42 resets, run finished after 29 ms. (steps per millisecond=344 ) properties (out of 3) seen :0
Running SMT prover for 3 properties.
// Phase 1: matrix 446 rows 138 cols
[2023-03-12 16:34:31] [INFO ] Computed 11 place invariants in 3 ms
[2023-03-12 16:34:32] [INFO ] After 151ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:3
[2023-03-12 16:34:32] [INFO ] [Nat]Absence check using 11 positive place invariants in 3 ms returned sat
[2023-03-12 16:34:32] [INFO ] After 391ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :3
[2023-03-12 16:34:32] [INFO ] State equation strengthened by 1 read => feed constraints.
[2023-03-12 16:34:32] [INFO ] After 179ms SMT Verify possible using 1 Read/Feed constraints in natural domain returned unsat :0 sat :3
[2023-03-12 16:34:33] [INFO ] Deduced a trap composed of 11 places in 201 ms of which 0 ms to minimize.
[2023-03-12 16:34:33] [INFO ] Deduced a trap composed of 15 places in 229 ms of which 1 ms to minimize.
[2023-03-12 16:34:33] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 489 ms
[2023-03-12 16:34:33] [INFO ] After 842ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :3
Attempting to minimize the solution found.
Minimization took 204 ms.
[2023-03-12 16:34:33] [INFO ] After 1631ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :3
Parikh walk visited 0 properties in 25 ms.
Support contains 47 out of 138 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 138/138 places, 446/446 transitions.
Drop transitions removed 4 transitions
Trivial Post-agglo rules discarded 4 transitions
Performed 4 trivial Post agglomeration. Transition count delta: 4
Iterating post reduction 0 with 4 rules applied. Total rules applied 4 place count 138 transition count 442
Reduce places removed 4 places and 0 transitions.
Performed 3 Post agglomeration using F-continuation condition.Transition count delta: 3
Iterating post reduction 1 with 7 rules applied. Total rules applied 11 place count 134 transition count 439
Reduce places removed 3 places and 0 transitions.
Iterating post reduction 2 with 3 rules applied. Total rules applied 14 place count 131 transition count 439
Performed 2 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 2 Pre rules applied. Total rules applied 14 place count 131 transition count 437
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 3 with 4 rules applied. Total rules applied 18 place count 129 transition count 437
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 22 place count 125 transition count 421
Iterating global reduction 3 with 4 rules applied. Total rules applied 26 place count 125 transition count 421
Performed 5 Post agglomeration using F-continuation condition.Transition count delta: 5
Deduced a syphon composed of 5 places in 1 ms
Reduce places removed 5 places and 0 transitions.
Iterating global reduction 3 with 10 rules applied. Total rules applied 36 place count 120 transition count 416
Drop transitions removed 2 transitions
Redundant transition composition rules discarded 2 transitions
Iterating global reduction 3 with 2 rules applied. Total rules applied 38 place count 120 transition count 414
Free-agglomeration rule applied 2 times.
Iterating global reduction 3 with 2 rules applied. Total rules applied 40 place count 120 transition count 412
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 3 with 2 rules applied. Total rules applied 42 place count 118 transition count 412
Partial Post-agglomeration rule applied 1 times.
Drop transitions removed 1 transitions
Iterating global reduction 4 with 1 rules applied. Total rules applied 43 place count 118 transition count 412
Applied a total of 43 rules in 82 ms. Remains 118 /138 variables (removed 20) and now considering 412/446 (removed 34) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 82 ms. Remains : 118/138 places, 412/446 transitions.
Incomplete random walk after 10000 steps, including 315 resets, run finished after 138 ms. (steps per millisecond=72 ) properties (out of 3) seen :0
Incomplete Best-First random walk after 10001 steps, including 43 resets, run finished after 60 ms. (steps per millisecond=166 ) properties (out of 3) seen :1
FORMULA AutonomousCar-PT-07b-ReachabilityCardinality-02 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
Incomplete Best-First random walk after 10001 steps, including 41 resets, run finished after 39 ms. (steps per millisecond=256 ) properties (out of 2) seen :0
Incomplete Best-First random walk after 10000 steps, including 46 resets, run finished after 27 ms. (steps per millisecond=370 ) properties (out of 2) seen :0
Running SMT prover for 2 properties.
// Phase 1: matrix 412 rows 118 cols
[2023-03-12 16:34:34] [INFO ] Computed 11 place invariants in 6 ms
[2023-03-12 16:34:34] [INFO ] After 53ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:2
[2023-03-12 16:34:34] [INFO ] [Nat]Absence check using 11 positive place invariants in 11 ms returned sat
[2023-03-12 16:34:34] [INFO ] After 228ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :2
[2023-03-12 16:34:34] [INFO ] State equation strengthened by 1 read => feed constraints.
[2023-03-12 16:34:34] [INFO ] After 50ms SMT Verify possible using 1 Read/Feed constraints in natural domain returned unsat :0 sat :2
[2023-03-12 16:34:34] [INFO ] Deduced a trap composed of 13 places in 236 ms of which 1 ms to minimize.
[2023-03-12 16:34:34] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 266 ms
[2023-03-12 16:34:34] [INFO ] After 420ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :2
Attempting to minimize the solution found.
Minimization took 127 ms.
[2023-03-12 16:34:35] [INFO ] After 882ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :2
Parikh walk visited 0 properties in 11 ms.
Support contains 21 out of 118 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 118/118 places, 412/412 transitions.
Drop transitions removed 15 transitions
Trivial Post-agglo rules discarded 15 transitions
Performed 15 trivial Post agglomeration. Transition count delta: 15
Iterating post reduction 0 with 15 rules applied. Total rules applied 15 place count 118 transition count 397
Reduce places removed 15 places and 0 transitions.
Performed 4 Post agglomeration using F-continuation condition.Transition count delta: 4
Iterating post reduction 1 with 19 rules applied. Total rules applied 34 place count 103 transition count 393
Reduce places removed 4 places and 0 transitions.
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 2 with 6 rules applied. Total rules applied 40 place count 99 transition count 391
Reduce places removed 1 places and 0 transitions.
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 3 with 2 rules applied. Total rules applied 42 place count 98 transition count 390
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 4 with 1 Pre rules applied. Total rules applied 42 place count 98 transition count 389
Deduced a syphon composed of 1 places in 1 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 4 with 2 rules applied. Total rules applied 44 place count 97 transition count 389
Discarding 2 places :
Symmetric choice reduction at 4 with 2 rule applications. Total rules 46 place count 95 transition count 374
Iterating global reduction 4 with 2 rules applied. Total rules applied 48 place count 95 transition count 374
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Drop transitions removed 1 transitions
Trivial Post-agglo rules discarded 1 transitions
Performed 1 trivial Post agglomeration. Transition count delta: 1
Iterating post reduction 4 with 2 rules applied. Total rules applied 50 place count 95 transition count 372
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 5 with 1 rules applied. Total rules applied 51 place count 94 transition count 372
Performed 8 Post agglomeration using F-continuation condition.Transition count delta: 8
Deduced a syphon composed of 8 places in 1 ms
Reduce places removed 8 places and 0 transitions.
Iterating global reduction 6 with 16 rules applied. Total rules applied 67 place count 86 transition count 364
Drop transitions removed 1 transitions
Redundant transition composition rules discarded 1 transitions
Iterating global reduction 6 with 1 rules applied. Total rules applied 68 place count 86 transition count 363
Free-agglomeration rule applied 6 times.
Iterating global reduction 6 with 6 rules applied. Total rules applied 74 place count 86 transition count 357
Reduce places removed 6 places and 0 transitions.
Iterating post reduction 6 with 6 rules applied. Total rules applied 80 place count 80 transition count 357
Reduce places removed 2 places and 2 transitions.
Iterating global reduction 7 with 2 rules applied. Total rules applied 82 place count 78 transition count 355
Applied a total of 82 rules in 68 ms. Remains 78 /118 variables (removed 40) and now considering 355/412 (removed 57) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 68 ms. Remains : 78/118 places, 355/412 transitions.
Incomplete random walk after 10000 steps, including 59 resets, run finished after 105 ms. (steps per millisecond=95 ) properties (out of 2) seen :0
Incomplete Best-First random walk after 10000 steps, including 41 resets, run finished after 37 ms. (steps per millisecond=270 ) properties (out of 2) seen :0
Incomplete Best-First random walk after 10001 steps, including 61 resets, run finished after 17 ms. (steps per millisecond=588 ) properties (out of 2) seen :0
Interrupted probabilistic random walk after 984658 steps, run timeout after 3001 ms. (steps per millisecond=328 ) properties seen :{}
Probabilistic random walk after 984658 steps, saw 142160 distinct states, run finished after 3005 ms. (steps per millisecond=327 ) properties seen :0
Running SMT prover for 2 properties.
// Phase 1: matrix 355 rows 78 cols
[2023-03-12 16:34:38] [INFO ] Computed 11 place invariants in 2 ms
[2023-03-12 16:34:38] [INFO ] After 61ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:2
[2023-03-12 16:34:38] [INFO ] [Nat]Absence check using 11 positive place invariants in 2 ms returned sat
[2023-03-12 16:34:38] [INFO ] After 519ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :2
[2023-03-12 16:34:38] [INFO ] State equation strengthened by 1 read => feed constraints.
[2023-03-12 16:34:39] [INFO ] After 84ms SMT Verify possible using 1 Read/Feed constraints in natural domain returned unsat :0 sat :2
[2023-03-12 16:34:39] [INFO ] Deduced a trap composed of 7 places in 561 ms of which 1 ms to minimize.
[2023-03-12 16:34:39] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 592 ms
[2023-03-12 16:34:39] [INFO ] Deduced a trap composed of 7 places in 222 ms of which 0 ms to minimize.
[2023-03-12 16:34:40] [INFO ] Deduced a trap composed of 7 places in 237 ms of which 0 ms to minimize.
[2023-03-12 16:34:40] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 513 ms
[2023-03-12 16:34:40] [INFO ] After 1249ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :2
Attempting to minimize the solution found.
Minimization took 61 ms.
[2023-03-12 16:34:40] [INFO ] After 1963ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :2
Parikh walk visited 0 properties in 2 ms.
Support contains 21 out of 78 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 78/78 places, 355/355 transitions.
Applied a total of 0 rules in 9 ms. Remains 78 /78 variables (removed 0) and now considering 355/355 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 9 ms. Remains : 78/78 places, 355/355 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 78/78 places, 355/355 transitions.
Applied a total of 0 rules in 9 ms. Remains 78 /78 variables (removed 0) and now considering 355/355 (removed 0) transitions.
[2023-03-12 16:34:40] [INFO ] Invariant cache hit.
[2023-03-12 16:34:40] [INFO ] Implicit Places using invariants in 348 ms returned []
[2023-03-12 16:34:40] [INFO ] Invariant cache hit.
[2023-03-12 16:34:40] [INFO ] State equation strengthened by 1 read => feed constraints.
[2023-03-12 16:34:41] [INFO ] Implicit Places using invariants and state equation in 667 ms returned [69, 76]
Discarding 2 places :
Drop transitions removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Implicit Place search using SMT with State Equation took 1020 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 1 : 76/78 places, 354/355 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 76 transition count 353
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 1 with 1 rules applied. Total rules applied 2 place count 75 transition count 353
Free-agglomeration rule applied 1 times.
Iterating global reduction 2 with 1 rules applied. Total rules applied 3 place count 75 transition count 352
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 2 with 1 rules applied. Total rules applied 4 place count 74 transition count 352
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 3 with 1 rules applied. Total rules applied 5 place count 74 transition count 352
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 3 with 1 rules applied. Total rules applied 6 place count 73 transition count 352
Partial Free-agglomeration rule applied 1 times.
Drop transitions removed 1 transitions
Iterating global reduction 4 with 1 rules applied. Total rules applied 7 place count 73 transition count 352
Applied a total of 7 rules in 79 ms. Remains 73 /76 variables (removed 3) and now considering 352/354 (removed 2) transitions.
// Phase 1: matrix 352 rows 73 cols
[2023-03-12 16:34:41] [INFO ] Computed 9 place invariants in 3 ms
[2023-03-12 16:34:41] [INFO ] Implicit Places using invariants in 407 ms returned []
[2023-03-12 16:34:41] [INFO ] Invariant cache hit.
[2023-03-12 16:34:42] [INFO ] Implicit Places using invariants and state equation in 216 ms returned []
Implicit Place search using SMT with State Equation took 628 ms to find 0 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 2 : 73/78 places, 352/355 transitions.
Finished structural reductions in REACHABILITY mode , in 2 iterations and 1742 ms. Remains : 73/78 places, 352/355 transitions.
Incomplete random walk after 10000 steps, including 31 resets, run finished after 82 ms. (steps per millisecond=121 ) properties (out of 2) seen :0
Incomplete Best-First random walk after 10000 steps, including 37 resets, run finished after 30 ms. (steps per millisecond=333 ) properties (out of 2) seen :0
Incomplete Best-First random walk after 10001 steps, including 3 resets, run finished after 40 ms. (steps per millisecond=250 ) properties (out of 2) seen :0
Interrupted probabilistic random walk after 1338596 steps, run timeout after 3001 ms. (steps per millisecond=446 ) properties seen :{1=1}
Probabilistic random walk after 1338596 steps, saw 189804 distinct states, run finished after 3001 ms. (steps per millisecond=446 ) properties seen :1
FORMULA AutonomousCar-PT-07b-ReachabilityCardinality-14 FALSE TECHNIQUES TOPOLOGICAL PROBABILISTIC_WALK
Running SMT prover for 1 properties.
[2023-03-12 16:34:45] [INFO ] Invariant cache hit.
[2023-03-12 16:34:45] [INFO ] After 24ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
[2023-03-12 16:34:45] [INFO ] [Nat]Absence check using 9 positive place invariants in 2 ms returned sat
[2023-03-12 16:34:45] [INFO ] After 144ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2023-03-12 16:34:45] [INFO ] Deduced a trap composed of 5 places in 202 ms of which 1 ms to minimize.
[2023-03-12 16:34:45] [INFO ] Deduced a trap composed of 7 places in 281 ms of which 0 ms to minimize.
[2023-03-12 16:34:45] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 521 ms
[2023-03-12 16:34:45] [INFO ] After 701ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
Attempting to minimize the solution found.
Minimization took 42 ms.
[2023-03-12 16:34:46] [INFO ] After 785ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
Parikh walk visited 0 properties in 2 ms.
Support contains 16 out of 73 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 73/73 places, 352/352 transitions.
Drop transitions removed 3 transitions
Trivial Post-agglo rules discarded 3 transitions
Performed 3 trivial Post agglomeration. Transition count delta: 3
Iterating post reduction 0 with 3 rules applied. Total rules applied 3 place count 73 transition count 349
Reduce places removed 3 places and 0 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 1 with 4 rules applied. Total rules applied 7 place count 70 transition count 348
Reduce places removed 1 places and 0 transitions.
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 2 with 2 rules applied. Total rules applied 9 place count 69 transition count 347
Free-agglomeration rule applied 1 times.
Iterating global reduction 3 with 1 rules applied. Total rules applied 10 place count 69 transition count 346
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 3 with 1 rules applied. Total rules applied 11 place count 68 transition count 346
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 4 with 1 rules applied. Total rules applied 12 place count 67 transition count 345
Applied a total of 12 rules in 72 ms. Remains 67 /73 variables (removed 6) and now considering 345/352 (removed 7) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 72 ms. Remains : 67/73 places, 345/352 transitions.
Incomplete random walk after 10000 steps, including 8 resets, run finished after 11 ms. (steps per millisecond=909 ) properties (out of 1) seen :0
Incomplete Best-First random walk after 10000 steps, including 17 resets, run finished after 12 ms. (steps per millisecond=833 ) properties (out of 1) seen :0
Interrupted probabilistic random walk after 2128010 steps, run timeout after 3001 ms. (steps per millisecond=709 ) properties seen :{}
Probabilistic random walk after 2128010 steps, saw 294148 distinct states, run finished after 3014 ms. (steps per millisecond=706 ) properties seen :0
Running SMT prover for 1 properties.
// Phase 1: matrix 345 rows 67 cols
[2023-03-12 16:34:49] [INFO ] Computed 9 place invariants in 2 ms
[2023-03-12 16:34:49] [INFO ] After 86ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
[2023-03-12 16:34:49] [INFO ] [Nat]Absence check using 9 positive place invariants in 4 ms returned sat
[2023-03-12 16:34:49] [INFO ] After 134ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2023-03-12 16:34:49] [INFO ] Deduced a trap composed of 7 places in 242 ms of which 1 ms to minimize.
[2023-03-12 16:34:49] [INFO ] Deduced a trap composed of 7 places in 135 ms of which 0 ms to minimize.
[2023-03-12 16:34:50] [INFO ] Deduced a trap composed of 7 places in 266 ms of which 22 ms to minimize.
[2023-03-12 16:34:50] [INFO ] Trap strengthening (SAT) tested/added 4/3 trap constraints in 688 ms
[2023-03-12 16:34:50] [INFO ] After 842ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
Attempting to minimize the solution found.
Minimization took 59 ms.
[2023-03-12 16:34:50] [INFO ] After 984ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
Parikh walk visited 0 properties in 1 ms.
Support contains 16 out of 67 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 67/67 places, 345/345 transitions.
Applied a total of 0 rules in 23 ms. Remains 67 /67 variables (removed 0) and now considering 345/345 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 23 ms. Remains : 67/67 places, 345/345 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 67/67 places, 345/345 transitions.
Applied a total of 0 rules in 27 ms. Remains 67 /67 variables (removed 0) and now considering 345/345 (removed 0) transitions.
[2023-03-12 16:34:50] [INFO ] Invariant cache hit.
[2023-03-12 16:34:50] [INFO ] Implicit Places using invariants in 310 ms returned []
[2023-03-12 16:34:50] [INFO ] Invariant cache hit.
[2023-03-12 16:34:50] [INFO ] Implicit Places using invariants and state equation in 368 ms returned []
Implicit Place search using SMT with State Equation took 689 ms to find 0 implicit places.
[2023-03-12 16:34:50] [INFO ] Redundant transitions in 27 ms returned []
[2023-03-12 16:34:50] [INFO ] Invariant cache hit.
[2023-03-12 16:34:51] [INFO ] Dead Transitions using invariants and state equation in 495 ms found 0 transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1250 ms. Remains : 67/67 places, 345/345 transitions.
Applied a total of 0 rules in 24 ms. Remains 67 /67 variables (removed 0) and now considering 345/345 (removed 0) transitions.
Running SMT prover for 1 properties.
[2023-03-12 16:34:51] [INFO ] Invariant cache hit.
[2023-03-12 16:34:51] [INFO ] After 22ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
[2023-03-12 16:34:51] [INFO ] [Nat]Absence check using 9 positive place invariants in 1 ms returned sat
[2023-03-12 16:34:51] [INFO ] After 169ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2023-03-12 16:34:51] [INFO ] Deduced a trap composed of 7 places in 89 ms of which 0 ms to minimize.
[2023-03-12 16:34:52] [INFO ] Deduced a trap composed of 7 places in 104 ms of which 0 ms to minimize.
[2023-03-12 16:34:52] [INFO ] Deduced a trap composed of 7 places in 226 ms of which 0 ms to minimize.
[2023-03-12 16:34:52] [INFO ] Trap strengthening (SAT) tested/added 4/3 trap constraints in 453 ms
[2023-03-12 16:34:52] [INFO ] After 656ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
Attempting to minimize the solution found.
Minimization took 38 ms.
[2023-03-12 16:34:52] [INFO ] After 767ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2023-03-12 16:34:52] [INFO ] Export to MCC of 1 properties in file /home/mcc/execution/ReachabilityCardinality.sr.xml took 4 ms.
[2023-03-12 16:34:52] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml of net with 67 places, 345 transitions and 3148 arcs took 5 ms.
[2023-03-12 16:34:52] [INFO ] Flatten gal took : 174 ms
Total runtime 29341 ms.
There are residual formulas that ITS could not solve within timeout
pnml2lts-sym model.pnml --lace-workers=4 --vset=lddmc --saturation=sat -rbs,w2W,ru,hf --sylvan-sizes=20,28,20,28 --invariant=/tmp/626/inv_0_ --inv-par
FORMULA AutonomousCar-PT-07b-ReachabilityCardinality-05 FALSE TECHNIQUES DECISION_DIAGRAMS PARALLEL_PROCESSING USE_NUPN

BK_STOP 1678638902428

--------------------
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:
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202303021504.jar
++ sed s/.jar//
+ VERSION=202303021504
+ echo 'Running Version 202303021504'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination ReachabilityCardinality -timeout 360 -rebuildPNML
mcc2023
rfs formula name AutonomousCar-PT-07b-ReachabilityCardinality-05
rfs formula type AG
rfs formula formula --invariant=/tmp/626/inv_0_
pnml2lts-sym: Exploration order is bfs-prev
pnml2lts-sym: Saturation strategy is sat
pnml2lts-sym: Guided search strategy is unguided
pnml2lts-sym: Attractor strategy is default
pnml2lts-sym: opening model.pnml
pnml2lts-sym: Edge label is id
Warning: program compiled against libxml 210 using older 209
pnml2lts-sym: Petri net has 67 places, 345 transitions and 3148 arcs
pnml2lts-sym: Petri net AutonomousCar_PT_07b analyzed
pnml2lts-sym: There are no safe places
pnml2lts-sym: Loading Petri net took 0.020 real 0.020 user 0.010 sys
pnml2lts-sym: Initializing regrouping layer
pnml2lts-sym: Regroup specification: bs,w2W,ru,hf
pnml2lts-sym: Regroup Boost's Sloan
pnml2lts-sym: Regroup over-approximate must-write to may-write
pnml2lts-sym: Regroup Row sUbsume
pnml2lts-sym: Reqroup Horizontal Flip
pnml2lts-sym: Regrouping: 345->321 groups
pnml2lts-sym: Regrouping took 0.090 real 0.080 user 0.000 sys
pnml2lts-sym: state vector length is 67; there are 321 groups
pnml2lts-sym: Creating a multi-core ListDD domain.
pnml2lts-sym: Sylvan allocates 15.000 GB virtual memory for nodes table and operation cache.
pnml2lts-sym: Initial nodes table and operation cache requires 60.00 MB.
pnml2lts-sym: Using GBgetTransitionsShortR2W as next-state function
pnml2lts-sym: got initial state
pnml2lts-sym:
pnml2lts-sym: Invariant violation (/tmp/626/inv_0_) found at depth -1!
pnml2lts-sym:
pnml2lts-sym: all invariants violated
pnml2lts-sym: exiting now
pnml2lts-sym: invariant detection took 7.930 real 31.680 user 0.000 sys
pnml2lts-sym: max token count: 1

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="AutonomousCar-PT-07b"
export BK_EXAMINATION="ReachabilityCardinality"
export BK_TOOL="ltsminxred"
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 2-5348"
echo " Executing tool ltsminxred"
echo " Input is AutonomousCar-PT-07b, examination is ReachabilityCardinality"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r009-oct2-167813598200638"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/AutonomousCar-PT-07b.tgz
mv AutonomousCar-PT-07b execution
cd execution
if [ "ReachabilityCardinality" = "ReachabilityDeadlock" ] || [ "ReachabilityCardinality" = "UpperBounds" ] || [ "ReachabilityCardinality" = "QuasiLiveness" ] || [ "ReachabilityCardinality" = "StableMarking" ] || [ "ReachabilityCardinality" = "Liveness" ] || [ "ReachabilityCardinality" = "OneSafe" ] || [ "ReachabilityCardinality" = "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 [ "ReachabilityCardinality" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "ReachabilityCardinality" != "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 "ReachabilityCardinality.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property ReachabilityCardinality.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "ReachabilityCardinality.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 '' ReachabilityCardinality.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "ReachabilityCardinality" = "ReachabilityDeadlock" ] || [ "ReachabilityCardinality" = "QuasiLiveness" ] || [ "ReachabilityCardinality" = "StableMarking" ] || [ "ReachabilityCardinality" = "Liveness" ] || [ "ReachabilityCardinality" = "OneSafe" ] ; then
echo "FORMULA_NAME ReachabilityCardinality"
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 ;