About the Execution of 2021-gold for DLCflexbar-PT-5b
Execution Summary | |||||
Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
2050.987 | 66856.00 | 95202.00 | 594.70 | TTFFFFTTFTTTFTFT | normal |
Execution Chart
We display below the execution chart for this examination (boot time has been removed).
Trace from the execution
Formatting '/data/fkordon/mcc2022-input.r071-tall-165254780200023.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2022-input.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 2-4028
Executing tool gold2021
Input is DLCflexbar-PT-5b, examination is ReachabilityCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r071-tall-165254780200023
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preparation of the directory to be used:
/home/mcc/execution
total 6.9M
-rw-r--r-- 1 mcc users 7.4K Apr 29 19:20 CTLCardinality.txt
-rw-r--r-- 1 mcc users 81K Apr 29 19:20 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.1K Apr 29 19:19 CTLFireability.txt
-rw-r--r-- 1 mcc users 46K Apr 29 19:19 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 10 09:33 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.4K May 10 09:33 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.7K May 9 07:25 LTLCardinality.txt
-rw-r--r-- 1 mcc users 25K May 9 07:25 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.2K May 9 07:25 LTLFireability.txt
-rw-r--r-- 1 mcc users 16K May 9 07:25 LTLFireability.xml
-rw-r--r-- 1 mcc users 8.4K Apr 29 19:21 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 83K Apr 29 19:21 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 9.1K Apr 29 19:20 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 78K Apr 29 19:20 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K May 9 07:25 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K May 9 07:25 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 10 09:33 equiv_col
-rw-r--r-- 1 mcc users 3 May 10 09:33 instance
-rw-r--r-- 1 mcc users 6 May 10 09:33 iscolored
-rw-r--r-- 1 mcc users 6.5M May 10 09:33 model.pnml
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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 DLCflexbar-PT-5b-ReachabilityCardinality-00
FORMULA_NAME DLCflexbar-PT-5b-ReachabilityCardinality-01
FORMULA_NAME DLCflexbar-PT-5b-ReachabilityCardinality-02
FORMULA_NAME DLCflexbar-PT-5b-ReachabilityCardinality-03
FORMULA_NAME DLCflexbar-PT-5b-ReachabilityCardinality-04
FORMULA_NAME DLCflexbar-PT-5b-ReachabilityCardinality-05
FORMULA_NAME DLCflexbar-PT-5b-ReachabilityCardinality-06
FORMULA_NAME DLCflexbar-PT-5b-ReachabilityCardinality-07
FORMULA_NAME DLCflexbar-PT-5b-ReachabilityCardinality-08
FORMULA_NAME DLCflexbar-PT-5b-ReachabilityCardinality-09
FORMULA_NAME DLCflexbar-PT-5b-ReachabilityCardinality-10
FORMULA_NAME DLCflexbar-PT-5b-ReachabilityCardinality-11
FORMULA_NAME DLCflexbar-PT-5b-ReachabilityCardinality-12
FORMULA_NAME DLCflexbar-PT-5b-ReachabilityCardinality-13
FORMULA_NAME DLCflexbar-PT-5b-ReachabilityCardinality-14
FORMULA_NAME DLCflexbar-PT-5b-ReachabilityCardinality-15
=== Now, execution of the tool begins
BK_START 1655068452909
Running Version 0
[2022-06-12 21:14:14] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityCardinality, -spotpath, /home/mcc/BenchKit/bin//..//ltlfilt, -z3path, /home/mcc/BenchKit/bin//..//z3/bin/z3, -yices2path, /home/mcc/BenchKit/bin//..//yices/bin/yices, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2022-06-12 21:14:14] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2022-06-12 21:14:15] [INFO ] Load time of PNML (sax parser for PT used): 568 ms
[2022-06-12 21:14:15] [INFO ] Transformed 17305 places.
[2022-06-12 21:14:15] [INFO ] Transformed 26483 transitions.
[2022-06-12 21:14:15] [INFO ] Found NUPN structural information;
[2022-06-12 21:14:16] [INFO ] Parsed PT model containing 17305 places and 26483 transitions in 1439 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityCardinality.xml in 32 ms.
Working with output stream class java.io.PrintStream
FORMULA DLCflexbar-PT-5b-ReachabilityCardinality-05 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Incomplete random walk after 10000 steps, including 2 resets, run finished after 256 ms. (steps per millisecond=39 ) properties (out of 15) seen :4
FORMULA DLCflexbar-PT-5b-ReachabilityCardinality-15 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DLCflexbar-PT-5b-ReachabilityCardinality-04 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DLCflexbar-PT-5b-ReachabilityCardinality-02 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DLCflexbar-PT-5b-ReachabilityCardinality-00 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 39 ms. (steps per millisecond=256 ) properties (out of 11) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 27 ms. (steps per millisecond=370 ) properties (out of 11) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 19 ms. (steps per millisecond=526 ) properties (out of 11) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 16 ms. (steps per millisecond=625 ) properties (out of 11) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 33 ms. (steps per millisecond=303 ) properties (out of 11) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 17 ms. (steps per millisecond=588 ) properties (out of 11) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 13 ms. (steps per millisecond=769 ) properties (out of 11) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 13 ms. (steps per millisecond=769 ) properties (out of 11) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 17 ms. (steps per millisecond=588 ) properties (out of 11) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 12 ms. (steps per millisecond=833 ) properties (out of 11) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 13 ms. (steps per millisecond=769 ) properties (out of 11) seen :0
Running SMT prover for 11 properties.
// Phase 1: matrix 26483 rows 17305 cols
[2022-06-12 21:14:18] [INFO ] Computed 979 place invariants in 183 ms
[2022-06-12 21:14:24] [INFO ] SMT Verify possible in real domain returnedunsat :0 sat :0 real:11
[2022-06-12 21:14:32] [INFO ] [Nat]Absence check using 979 positive place invariants in 3516 ms returned sat
[2022-06-12 21:14:34] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2022-06-12 21:14:49] [WARNING] SMT solver failed with error :SMT solver raised an error when submitting script.... while checking expressions.
FORMULA DLCflexbar-PT-5b-ReachabilityCardinality-11 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA DLCflexbar-PT-5b-ReachabilityCardinality-09 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA DLCflexbar-PT-5b-ReachabilityCardinality-07 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA DLCflexbar-PT-5b-ReachabilityCardinality-01 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
Fused 11 Parikh solutions to 1 different solutions.
Support contains 45 out of 17305 places. Attempting structural reductions.
Starting structural reductions, iteration 0 : 17305/17305 places, 26483/26483 transitions.
Graph (trivial) has 15749 edges and 17305 vertex of which 1338 / 17305 are part of one of the 88 SCC in 54 ms
Free SCC test removed 1250 places
Drop transitions removed 1410 transitions
Reduce isomorphic transitions removed 1410 transitions.
Drop transitions removed 7733 transitions
Trivial Post-agglo rules discarded 7733 transitions
Performed 7733 trivial Post agglomeration. Transition count delta: 7733
Iterating post reduction 0 with 7733 rules applied. Total rules applied 7734 place count 16055 transition count 17340
Reduce places removed 7733 places and 0 transitions.
Ensure Unique test removed 202 transitions
Reduce isomorphic transitions removed 202 transitions.
Drop transitions removed 194 transitions
Trivial Post-agglo rules discarded 194 transitions
Performed 194 trivial Post agglomeration. Transition count delta: 194
Iterating post reduction 1 with 8129 rules applied. Total rules applied 15863 place count 8322 transition count 16944
Reduce places removed 194 places and 0 transitions.
Ensure Unique test removed 60 transitions
Reduce isomorphic transitions removed 60 transitions.
Drop transitions removed 58 transitions
Trivial Post-agglo rules discarded 58 transitions
Performed 58 trivial Post agglomeration. Transition count delta: 58
Iterating post reduction 2 with 312 rules applied. Total rules applied 16175 place count 8128 transition count 16826
Reduce places removed 58 places and 0 transitions.
Performed 22 Post agglomeration using F-continuation condition.Transition count delta: 22
Iterating post reduction 3 with 80 rules applied. Total rules applied 16255 place count 8070 transition count 16804
Reduce places removed 22 places and 0 transitions.
Iterating post reduction 4 with 22 rules applied. Total rules applied 16277 place count 8048 transition count 16804
Performed 92 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 5 with 92 Pre rules applied. Total rules applied 16277 place count 8048 transition count 16712
Deduced a syphon composed of 92 places in 473 ms
Reduce places removed 92 places and 0 transitions.
Iterating global reduction 5 with 184 rules applied. Total rules applied 16461 place count 7956 transition count 16712
Discarding 2242 places :
Symmetric choice reduction at 5 with 2242 rule applications. Total rules 18703 place count 5714 transition count 14470
Iterating global reduction 5 with 2242 rules applied. Total rules applied 20945 place count 5714 transition count 14470
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Drop transitions removed 2 transitions
Trivial Post-agglo rules discarded 2 transitions
Performed 2 trivial Post agglomeration. Transition count delta: 2
Iterating post reduction 5 with 4 rules applied. Total rules applied 20949 place count 5714 transition count 14466
Reduce places removed 2 places and 0 transitions.
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 6 with 3 rules applied. Total rules applied 20952 place count 5712 transition count 14465
Performed 963 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 7 with 963 Pre rules applied. Total rules applied 20952 place count 5712 transition count 13502
Deduced a syphon composed of 963 places in 331 ms
Reduce places removed 963 places and 0 transitions.
Iterating global reduction 7 with 1926 rules applied. Total rules applied 22878 place count 4749 transition count 13502
Discarding 163 places :
Symmetric choice reduction at 7 with 163 rule applications. Total rules 23041 place count 4586 transition count 9372
Iterating global reduction 7 with 163 rules applied. Total rules applied 23204 place count 4586 transition count 9372
Ensure Unique test removed 128 transitions
Reduce isomorphic transitions removed 128 transitions.
Iterating post reduction 7 with 128 rules applied. Total rules applied 23332 place count 4586 transition count 9244
Performed 1150 Post agglomeration using F-continuation condition with reduction of 7 identical transitions.
Deduced a syphon composed of 1150 places in 3 ms
Reduce places removed 1150 places and 0 transitions.
Iterating global reduction 8 with 2300 rules applied. Total rules applied 25632 place count 3436 transition count 8087
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 8 with 7 rules applied. Total rules applied 25639 place count 3436 transition count 8080
Renaming transitions due to excessive name length > 1024 char.
Performed 101 Post agglomeration using F-continuation condition with reduction of 210 identical transitions.
Deduced a syphon composed of 101 places in 3 ms
Reduce places removed 101 places and 0 transitions.
Iterating global reduction 9 with 202 rules applied. Total rules applied 25841 place count 3335 transition count 8820
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 9 with 1 rules applied. Total rules applied 25842 place count 3335 transition count 8819
Discarding 32 places :
Symmetric choice reduction at 10 with 32 rule applications. Total rules 25874 place count 3303 transition count 8371
Iterating global reduction 10 with 32 rules applied. Total rules applied 25906 place count 3303 transition count 8371
Ensure Unique test removed 211 transitions
Reduce isomorphic transitions removed 211 transitions.
Iterating post reduction 10 with 211 rules applied. Total rules applied 26117 place count 3303 transition count 8160
Performed 101 Post agglomeration using F-continuation condition with reduction of 189 identical transitions.
Deduced a syphon composed of 101 places in 3 ms
Reduce places removed 101 places and 0 transitions.
Iterating global reduction 11 with 202 rules applied. Total rules applied 26319 place count 3202 transition count 8911
Drop transitions removed 22 transitions
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 23 transitions.
Iterating post reduction 11 with 23 rules applied. Total rules applied 26342 place count 3202 transition count 8888
Discarding 28 places :
Symmetric choice reduction at 12 with 28 rule applications. Total rules 26370 place count 3174 transition count 8493
Iterating global reduction 12 with 28 rules applied. Total rules applied 26398 place count 3174 transition count 8493
Ensure Unique test removed 192 transitions
Reduce isomorphic transitions removed 192 transitions.
Iterating post reduction 12 with 192 rules applied. Total rules applied 26590 place count 3174 transition count 8301
Performed 30 Post agglomeration using F-continuation condition.Transition count delta: -228
Deduced a syphon composed of 30 places in 2 ms
Reduce places removed 30 places and 0 transitions.
Iterating global reduction 13 with 60 rules applied. Total rules applied 26650 place count 3144 transition count 8529
Drop transitions removed 49 transitions
Reduce isomorphic transitions removed 49 transitions.
Iterating post reduction 13 with 49 rules applied. Total rules applied 26699 place count 3144 transition count 8480
Drop transitions removed 104 transitions
Redundant transition composition rules discarded 104 transitions
Iterating global reduction 14 with 104 rules applied. Total rules applied 26803 place count 3144 transition count 8376
Discarding 14 places :
Symmetric choice reduction at 14 with 14 rule applications. Total rules 26817 place count 3130 transition count 8362
Iterating global reduction 14 with 14 rules applied. Total rules applied 26831 place count 3130 transition count 8362
Discarding 14 places :
Symmetric choice reduction at 14 with 14 rule applications. Total rules 26845 place count 3116 transition count 7376
Iterating global reduction 14 with 14 rules applied. Total rules applied 26859 place count 3116 transition count 7376
Ensure Unique test removed 14 transitions
Reduce isomorphic transitions removed 14 transitions.
Iterating post reduction 14 with 14 rules applied. Total rules applied 26873 place count 3116 transition count 7362
Performed 7 Post agglomeration using F-continuation condition.Transition count delta: 7
Deduced a syphon composed of 7 places in 1 ms
Reduce places removed 7 places and 0 transitions.
Iterating global reduction 15 with 14 rules applied. Total rules applied 26887 place count 3109 transition count 7355
Discarding 7 places :
Symmetric choice reduction at 15 with 7 rule applications. Total rules 26894 place count 3102 transition count 6862
Iterating global reduction 15 with 7 rules applied. Total rules applied 26901 place count 3102 transition count 6862
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 15 with 7 rules applied. Total rules applied 26908 place count 3102 transition count 6855
Performed 4 Post agglomeration using F-continuation condition.Transition count delta: -27
Deduced a syphon composed of 4 places in 1 ms
Reduce places removed 4 places and 0 transitions.
Iterating global reduction 16 with 8 rules applied. Total rules applied 26916 place count 3098 transition count 6882
Drop transitions removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 16 with 6 rules applied. Total rules applied 26922 place count 3098 transition count 6876
Drop transitions removed 21 transitions
Redundant transition composition rules discarded 21 transitions
Iterating global reduction 17 with 21 rules applied. Total rules applied 26943 place count 3098 transition count 6855
Performed 4 Post agglomeration using F-continuation condition.Transition count delta: -27
Deduced a syphon composed of 4 places in 1 ms
Reduce places removed 4 places and 0 transitions.
Iterating global reduction 17 with 8 rules applied. Total rules applied 26951 place count 3094 transition count 6882
Drop transitions removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 17 with 6 rules applied. Total rules applied 26957 place count 3094 transition count 6876
Drop transitions removed 21 transitions
Redundant transition composition rules discarded 21 transitions
Iterating global reduction 18 with 21 rules applied. Total rules applied 26978 place count 3094 transition count 6855
Performed 4 Post agglomeration using F-continuation condition.Transition count delta: -21
Deduced a syphon composed of 4 places in 1 ms
Reduce places removed 4 places and 0 transitions.
Iterating global reduction 18 with 8 rules applied. Total rules applied 26986 place count 3090 transition count 6876
Drop transitions removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 18 with 4 rules applied. Total rules applied 26990 place count 3090 transition count 6872
Drop transitions removed 20 transitions
Redundant transition composition rules discarded 20 transitions
Iterating global reduction 19 with 20 rules applied. Total rules applied 27010 place count 3090 transition count 6852
Performed 4 Post agglomeration using F-continuation condition.Transition count delta: -19
Deduced a syphon composed of 4 places in 1 ms
Reduce places removed 4 places and 0 transitions.
Iterating global reduction 19 with 8 rules applied. Total rules applied 27018 place count 3086 transition count 6871
Drop transitions removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 19 with 4 rules applied. Total rules applied 27022 place count 3086 transition count 6867
Drop transitions removed 19 transitions
Redundant transition composition rules discarded 19 transitions
Iterating global reduction 20 with 19 rules applied. Total rules applied 27041 place count 3086 transition count 6848
Performed 4 Post agglomeration using F-continuation condition.Transition count delta: -19
Deduced a syphon composed of 4 places in 1 ms
Reduce places removed 4 places and 0 transitions.
Iterating global reduction 20 with 8 rules applied. Total rules applied 27049 place count 3082 transition count 6867
Drop transitions removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 20 with 4 rules applied. Total rules applied 27053 place count 3082 transition count 6863
Drop transitions removed 19 transitions
Redundant transition composition rules discarded 19 transitions
Iterating global reduction 21 with 19 rules applied. Total rules applied 27072 place count 3082 transition count 6844
Performed 4 Post agglomeration using F-continuation condition.Transition count delta: -19
Deduced a syphon composed of 4 places in 1 ms
Reduce places removed 4 places and 0 transitions.
Iterating global reduction 21 with 8 rules applied. Total rules applied 27080 place count 3078 transition count 6863
Drop transitions removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 21 with 4 rules applied. Total rules applied 27084 place count 3078 transition count 6859
Drop transitions removed 19 transitions
Redundant transition composition rules discarded 19 transitions
Iterating global reduction 22 with 19 rules applied. Total rules applied 27103 place count 3078 transition count 6840
Performed 4 Post agglomeration using F-continuation condition.Transition count delta: -19
Deduced a syphon composed of 4 places in 1 ms
Reduce places removed 4 places and 0 transitions.
Iterating global reduction 22 with 8 rules applied. Total rules applied 27111 place count 3074 transition count 6859
Drop transitions removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 22 with 4 rules applied. Total rules applied 27115 place count 3074 transition count 6855
Drop transitions removed 19 transitions
Redundant transition composition rules discarded 19 transitions
Iterating global reduction 23 with 19 rules applied. Total rules applied 27134 place count 3074 transition count 6836
Performed 4 Post agglomeration using F-continuation condition.Transition count delta: -19
Deduced a syphon composed of 4 places in 1 ms
Reduce places removed 4 places and 0 transitions.
Iterating global reduction 23 with 8 rules applied. Total rules applied 27142 place count 3070 transition count 6855
Drop transitions removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 23 with 4 rules applied. Total rules applied 27146 place count 3070 transition count 6851
Drop transitions removed 19 transitions
Redundant transition composition rules discarded 19 transitions
Iterating global reduction 24 with 19 rules applied. Total rules applied 27165 place count 3070 transition count 6832
Performed 4 Post agglomeration using F-continuation condition.Transition count delta: -19
Deduced a syphon composed of 4 places in 1 ms
Reduce places removed 4 places and 0 transitions.
Iterating global reduction 24 with 8 rules applied. Total rules applied 27173 place count 3066 transition count 6851
Drop transitions removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 24 with 4 rules applied. Total rules applied 27177 place count 3066 transition count 6847
Drop transitions removed 19 transitions
Redundant transition composition rules discarded 19 transitions
Iterating global reduction 25 with 19 rules applied. Total rules applied 27196 place count 3066 transition count 6828
Performed 4 Post agglomeration using F-continuation condition.Transition count delta: -19
Deduced a syphon composed of 4 places in 1 ms
Reduce places removed 4 places and 0 transitions.
Iterating global reduction 25 with 8 rules applied. Total rules applied 27204 place count 3062 transition count 6847
Drop transitions removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 25 with 4 rules applied. Total rules applied 27208 place count 3062 transition count 6843
Drop transitions removed 19 transitions
Redundant transition composition rules discarded 19 transitions
Iterating global reduction 26 with 19 rules applied. Total rules applied 27227 place count 3062 transition count 6824
Performed 4 Post agglomeration using F-continuation condition.Transition count delta: -19
Deduced a syphon composed of 4 places in 1 ms
Reduce places removed 4 places and 0 transitions.
Iterating global reduction 26 with 8 rules applied. Total rules applied 27235 place count 3058 transition count 6843
Drop transitions removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 26 with 4 rules applied. Total rules applied 27239 place count 3058 transition count 6839
Drop transitions removed 19 transitions
Redundant transition composition rules discarded 19 transitions
Iterating global reduction 27 with 19 rules applied. Total rules applied 27258 place count 3058 transition count 6820
Performed 4 Post agglomeration using F-continuation condition.Transition count delta: -19
Deduced a syphon composed of 4 places in 1 ms
Reduce places removed 4 places and 0 transitions.
Iterating global reduction 27 with 8 rules applied. Total rules applied 27266 place count 3054 transition count 6839
Drop transitions removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 27 with 4 rules applied. Total rules applied 27270 place count 3054 transition count 6835
Drop transitions removed 19 transitions
Redundant transition composition rules discarded 19 transitions
Iterating global reduction 28 with 19 rules applied. Total rules applied 27289 place count 3054 transition count 6816
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: -5
Deduced a syphon composed of 2 places in 1 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 28 with 4 rules applied. Total rules applied 27293 place count 3052 transition count 6821
Drop transitions removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 28 with 2 rules applied. Total rules applied 27295 place count 3052 transition count 6819
Drop transitions removed 5 transitions
Redundant transition composition rules discarded 5 transitions
Iterating global reduction 29 with 5 rules applied. Total rules applied 27300 place count 3052 transition count 6814
Free-agglomeration rule applied 1827 times with reduction of 1195 identical transitions.
Iterating global reduction 29 with 1827 rules applied. Total rules applied 29127 place count 3052 transition count 3792
Reduce places removed 1827 places and 0 transitions.
Drop transitions removed 2239 transitions
Ensure Unique test removed 8 transitions
Reduce isomorphic transitions removed 2247 transitions.
Graph (complete) has 2720 edges and 1225 vertex of which 473 are kept as prefixes of interest. Removing 752 places using SCC suffix rule.5 ms
Discarding 752 places :
Also discarding 644 output transitions
Drop transitions removed 644 transitions
Iterating post reduction 29 with 4075 rules applied. Total rules applied 33202 place count 473 transition count 901
Drop transitions removed 122 transitions
Ensure Unique test removed 84 transitions
Reduce isomorphic transitions removed 206 transitions.
Iterating post reduction 30 with 206 rules applied. Total rules applied 33408 place count 473 transition count 695
Discarding 239 places :
Symmetric choice reduction at 31 with 239 rule applications. Total rules 33647 place count 234 transition count 321
Iterating global reduction 31 with 239 rules applied. Total rules applied 33886 place count 234 transition count 321
Drop transitions removed 13 transitions
Redundant transition composition rules discarded 13 transitions
Iterating global reduction 31 with 13 rules applied. Total rules applied 33899 place count 234 transition count 308
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 31 with 1 rules applied. Total rules applied 33900 place count 233 transition count 308
Free-agglomeration rule applied 2 times.
Iterating global reduction 32 with 2 rules applied. Total rules applied 33902 place count 233 transition count 306
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 32 with 2 rules applied. Total rules applied 33904 place count 231 transition count 306
Drop transitions removed 1 transitions
Redundant transition composition rules discarded 1 transitions
Iterating global reduction 33 with 1 rules applied. Total rules applied 33905 place count 231 transition count 305
Free-agglomeration rule applied 1 times.
Iterating global reduction 33 with 1 rules applied. Total rules applied 33906 place count 231 transition count 304
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 33 with 1 rules applied. Total rules applied 33907 place count 230 transition count 304
Partial Free-agglomeration rule applied 1 times.
Drop transitions removed 1 transitions
Iterating global reduction 34 with 1 rules applied. Total rules applied 33908 place count 230 transition count 304
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 34 with 1 rules applied. Total rules applied 33909 place count 229 transition count 303
Reduce places removed 7 places and 0 transitions.
Performed 6 Post agglomeration using F-continuation condition.Transition count delta: 6
Iterating post reduction 34 with 13 rules applied. Total rules applied 33922 place count 222 transition count 297
Reduce places removed 6 places and 0 transitions.
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 35 with 7 rules applied. Total rules applied 33929 place count 216 transition count 296
Performed 2 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 36 with 2 Pre rules applied. Total rules applied 33929 place count 216 transition count 294
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 36 with 4 rules applied. Total rules applied 33933 place count 214 transition count 294
Performed 15 Post agglomeration using F-continuation condition with reduction of 16 identical transitions.
Deduced a syphon composed of 15 places in 1 ms
Reduce places removed 15 places and 0 transitions.
Iterating global reduction 36 with 30 rules applied. Total rules applied 33963 place count 199 transition count 263
Drop transitions removed 22 transitions
Ensure Unique test removed 28 transitions
Reduce isomorphic transitions removed 50 transitions.
Iterating post reduction 36 with 50 rules applied. Total rules applied 34013 place count 199 transition count 213
Discarding 15 places :
Symmetric choice reduction at 37 with 15 rule applications. Total rules 34028 place count 184 transition count 191
Iterating global reduction 37 with 15 rules applied. Total rules applied 34043 place count 184 transition count 191
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 37 with 1 rules applied. Total rules applied 34044 place count 184 transition count 190
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 38 with 3 rules applied. Total rules applied 34047 place count 182 transition count 189
Drop transitions removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 38 with 2 rules applied. Total rules applied 34049 place count 182 transition count 187
Drop transitions removed 3 transitions
Redundant transition composition rules discarded 3 transitions
Iterating global reduction 39 with 3 rules applied. Total rules applied 34052 place count 182 transition count 184
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 39 with 2 rules applied. Total rules applied 34054 place count 180 transition count 184
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 40 with 2 rules applied. Total rules applied 34056 place count 179 transition count 183
Drop transitions removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Graph (complete) has 423 edges and 179 vertex of which 178 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.0 ms
Discarding 1 places :
Also discarding 0 output transitions
Iterating post reduction 40 with 2 rules applied. Total rules applied 34058 place count 178 transition count 182
Free-agglomeration rule applied 1 times.
Iterating global reduction 41 with 1 rules applied. Total rules applied 34059 place count 178 transition count 181
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 41 with 1 rules applied. Total rules applied 34060 place count 177 transition count 181
Applied a total of 34060 rules in 13838 ms. Remains 177 /17305 variables (removed 17128) and now considering 181/26483 (removed 26302) transitions.
Finished structural reductions, in 1 iterations. Remains : 177/17305 places, 181/26483 transitions.
[2022-06-12 21:15:03] [INFO ] Flatten gal took : 49 ms
[2022-06-12 21:15:03] [INFO ] Flatten gal took : 24 ms
[2022-06-12 21:15:03] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality13763306035284769361.gal : 9 ms
[2022-06-12 21:15:03] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality15775250746502925913.prop : 1 ms
Invoking ITS tools like this :CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-reach-linux64, --gc-threshold, 2000000, --quiet, -i, /tmp/ReachabilityCardinality13763306035284769361.gal, -t, CGAL, -reachable-file, /tmp/ReachabilityCardinality15775250746502925913.prop, --nowitness, --gen-order, FOLLOW], workingDir=/home/mcc/execution]
its-reach command run as :
/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-reach-linux64 --gc-threshold 2000000 --quiet -i /tmp/ReachabilityCardinality13763306035284769361.gal -t CGAL -reachable-file /tmp/ReachabilityCardinality15775250746502925913.prop --nowitness --gen-order FOLLOW
Loading property file /tmp/ReachabilityCardinality15775250746502925913.prop.
SDD proceeding with computation,7 properties remain. new max is 4
SDD size :1 after 3
SDD proceeding with computation,7 properties remain. new max is 8
SDD size :3 after 12
SDD proceeding with computation,7 properties remain. new max is 16
SDD size :12 after 21
SDD proceeding with computation,7 properties remain. new max is 32
SDD size :21 after 84
SDD proceeding with computation,7 properties remain. new max is 64
SDD size :84 after 588
SDD proceeding with computation,7 properties remain. new max is 128
SDD size :588 after 59052
SDD proceeding with computation,7 properties remain. new max is 256
SDD size :59052 after 63372
Reachability property DLCflexbar-PT-5b-ReachabilityCardinality-13 is true.
FORMULA DLCflexbar-PT-5b-ReachabilityCardinality-13 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
SDD proceeding with computation,6 properties remain. new max is 256
SDD size :63372 after 5.9924e+07
SDD proceeding with computation,6 properties remain. new max is 512
SDD size :5.9924e+07 after 1.396e+08
SDD proceeding with computation,6 properties remain. new max is 1024
SDD size :1.396e+08 after 3.45068e+08
SDD proceeding with computation,6 properties remain. new max is 2048
SDD size :3.45068e+08 after 3.7336e+09
Detected timeout of ITS tools.
[2022-06-12 21:15:18] [INFO ] Flatten gal took : 18 ms
[2022-06-12 21:15:18] [INFO ] Applying decomposition
[2022-06-12 21:15:18] [INFO ] Flatten gal took : 16 ms
Converted graph to binary with : CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202104292328/bin/convert-linux64, -i, /tmp/graph9338070143839821941.txt, -o, /tmp/graph9338070143839821941.bin, -w, /tmp/graph9338070143839821941.weights], workingDir=null]
Built communities with : CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202104292328/bin/louvain-linux64, /tmp/graph9338070143839821941.bin, -l, -1, -v, -w, /tmp/graph9338070143839821941.weights, -q, 0, -e, 0.001], workingDir=null]
[2022-06-12 21:15:18] [INFO ] Decomposing Gal with order
[2022-06-12 21:15:18] [INFO ] Rewriting arrays to variables to allow decomposition.
[2022-06-12 21:15:18] [INFO ] Removed a total of 51 redundant transitions.
[2022-06-12 21:15:18] [INFO ] Flatten gal took : 39 ms
[2022-06-12 21:15:18] [INFO ] Fuse similar labels procedure discarded/fused a total of 20 labels/synchronizations in 8 ms.
[2022-06-12 21:15:18] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality423566548199665067.gal : 6 ms
[2022-06-12 21:15:18] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality8692319402882631231.prop : 42 ms
Invoking ITS tools like this :CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-reach-linux64, --gc-threshold, 2000000, --quiet, -i, /tmp/ReachabilityCardinality423566548199665067.gal, -t, CGAL, -reachable-file, /tmp/ReachabilityCardinality8692319402882631231.prop, --nowitness], workingDir=/home/mcc/execution]
its-reach command run as :
/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-reach-linux64 --gc-threshold 2000000 --quiet -i /tmp/ReachabilityCardinality423566548199665067.gal -t CGAL -reachable-file /tmp/ReachabilityCardinality8692319402882631231.prop --nowitness
Loading property file /tmp/ReachabilityCardinality8692319402882631231.prop.
SDD proceeding with computation,6 properties remain. new max is 4
SDD size :1 after 10
SDD proceeding with computation,6 properties remain. new max is 8
SDD size :10 after 60
SDD proceeding with computation,6 properties remain. new max is 16
SDD size :60 after 2460
SDD proceeding with computation,6 properties remain. new max is 32
SDD size :2460 after 887460
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
petri\_inst\_inst\_mod\_flat,5.34681e+19,0.055947,6048,363,116,1990,729,571,1023,179,1167,0
Total reachable state count : 53468071169183800200
Verifying 6 reachability properties.
Invariant property DLCflexbar-PT-5b-ReachabilityCardinality-03 does not hold.
FORMULA DLCflexbar-PT-5b-ReachabilityCardinality-03 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING USE_NUPN
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
DLCflexbar-PT-5b-ReachabilityCardinality-03,2.23021e+18,0.058484,6048,336,102,1990,729,596,1023,185,1167,473
Reachability property DLCflexbar-PT-5b-ReachabilityCardinality-06 is true.
FORMULA DLCflexbar-PT-5b-ReachabilityCardinality-06 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING USE_NUPN
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
DLCflexbar-PT-5b-ReachabilityCardinality-06,4.10854e+18,0.058828,6048,89,40,1990,729,597,1023,186,1167,475
Invariant property DLCflexbar-PT-5b-ReachabilityCardinality-08 does not hold.
FORMULA DLCflexbar-PT-5b-ReachabilityCardinality-08 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING USE_NUPN
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
DLCflexbar-PT-5b-ReachabilityCardinality-08,1.02825e+18,0.061455,6048,375,108,1990,729,613,1388,186,1167,977
Reachability property DLCflexbar-PT-5b-ReachabilityCardinality-10 is true.
FORMULA DLCflexbar-PT-5b-ReachabilityCardinality-10 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING USE_NUPN
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
DLCflexbar-PT-5b-ReachabilityCardinality-10,2.6734e+19,0.061704,6048,233,78,1990,729,613,1388,186,1167,977
Invariant property DLCflexbar-PT-5b-ReachabilityCardinality-12 does not hold.
FORMULA DLCflexbar-PT-5b-ReachabilityCardinality-12 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING USE_NUPN
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
DLCflexbar-PT-5b-ReachabilityCardinality-12,5.02868e+17,0.064925,6048,178,55,2162,729,651,2012,190,1167,1651
Invariant property DLCflexbar-PT-5b-ReachabilityCardinality-14 does not hold.
FORMULA DLCflexbar-PT-5b-ReachabilityCardinality-14 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING USE_NUPN
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
DLCflexbar-PT-5b-ReachabilityCardinality-14,5.47805e+18,0.065268,6048,102,42,2188,729,654,2015,190,1167,1697
All properties solved without resorting to model-checking.
BK_STOP 1655068519765
--------------------
content from stderr:
+ export BINDIR=/home/mcc/BenchKit/bin//../
+ BINDIR=/home/mcc/BenchKit/bin//../
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ ReachabilityCardinality = StateSpace ]]
+ /home/mcc/BenchKit/bin//..//runeclipse.sh /home/mcc/execution ReachabilityCardinality -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
++ cut -d . -f 9
++ ls /home/mcc/BenchKit/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202104292328.jar
+ VERSION=0
+ echo 'Running Version 0'
+ /home/mcc/BenchKit/bin//..//itstools/its-tools -data /home/mcc/execution/workspace -pnfolder /home/mcc/execution -examination ReachabilityCardinality -spotpath /home/mcc/BenchKit/bin//..//ltlfilt -z3path /home/mcc/BenchKit/bin//..//z3/bin/z3 -yices2path /home/mcc/BenchKit/bin//..//yices/bin/yices -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600 -vmargs -Dosgi.locking=none -Declipse.stateSaveDelayInterval=-1 -Dosgi.configuration.area=/tmp/.eclipse -Xss128m -Xms40m -Xmx16000m
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="DLCflexbar-PT-5b"
export BK_EXAMINATION="ReachabilityCardinality"
export BK_TOOL="gold2021"
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 2-4028"
echo " Executing tool gold2021"
echo " Input is DLCflexbar-PT-5b, 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 r071-tall-165254780200023"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"
tar xzf /home/mcc/BenchKit/INPUTS/DLCflexbar-PT-5b.tgz
mv DLCflexbar-PT-5b 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 '
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 ;