fond
Model Checking Contest 2021
11th edition, Paris, France, June 23, 2021
Execution of r178-tajo-162089415600314
Last Updated
Jun 28, 2021

About the Execution of ITS-Tools for RERS17pb115-PT-7

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
16248.411 1314725.00 1622427.00 41654.80 ???????????????T normal

Execution Chart

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

Trace from the execution

Formatting '/mnt/tpsp/fkordon/mcc2021-input.r178-tajo-162089415600314.qcow2', fmt=qcow2 size=4294967296 backing_file='/mnt/tpsp/fkordon/mcc2021-input.qcow2' encryption=off cluster_size=65536 lazy_refcounts=off
Waiting for the VM to be ready (probing ssh)
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=====================================================================
Generated by BenchKit 2-4028
Executing tool itstools
Input is RERS17pb115-PT-7, examination is CTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r178-tajo-162089415600314
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 70M
-rw-r--r-- 1 mcc users 9.3K May 5 16:58 CTLCardinality.txt
-rw-r--r-- 1 mcc users 84K May 10 09:44 CTLCardinality.xml
-rw-r--r-- 1 mcc users 15K May 5 16:58 CTLFireability.txt
-rw-r--r-- 1 mcc users 74K May 10 09:44 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 6 14:48 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.4K May 6 14:48 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.4K Mar 28 16:30 LTLCardinality.txt
-rw-r--r-- 1 mcc users 26K Mar 28 16:30 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.8K Mar 28 16:30 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K Mar 28 16:30 LTLFireability.xml
-rw-r--r-- 1 mcc users 3.4K Mar 27 10:22 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 17K Mar 27 10:22 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 3.1K Mar 25 13:35 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 14K Mar 25 13:35 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Mar 22 08:15 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Mar 22 08:15 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 5 16:51 equiv_col
-rw-r--r-- 1 mcc users 2 May 5 16:51 instance
-rw-r--r-- 1 mcc users 6 May 5 16:51 iscolored
-rw-r--r-- 1 mcc users 69M May 5 16:51 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 RERS17pb115-PT-7-CTLFireability-00
FORMULA_NAME RERS17pb115-PT-7-CTLFireability-01
FORMULA_NAME RERS17pb115-PT-7-CTLFireability-02
FORMULA_NAME RERS17pb115-PT-7-CTLFireability-03
FORMULA_NAME RERS17pb115-PT-7-CTLFireability-04
FORMULA_NAME RERS17pb115-PT-7-CTLFireability-05
FORMULA_NAME RERS17pb115-PT-7-CTLFireability-06
FORMULA_NAME RERS17pb115-PT-7-CTLFireability-07
FORMULA_NAME RERS17pb115-PT-7-CTLFireability-08
FORMULA_NAME RERS17pb115-PT-7-CTLFireability-09
FORMULA_NAME RERS17pb115-PT-7-CTLFireability-10
FORMULA_NAME RERS17pb115-PT-7-CTLFireability-11
FORMULA_NAME RERS17pb115-PT-7-CTLFireability-12
FORMULA_NAME RERS17pb115-PT-7-CTLFireability-13
FORMULA_NAME RERS17pb115-PT-7-CTLFireability-14
FORMULA_NAME RERS17pb115-PT-7-CTLFireability-15

=== Now, execution of the tool begins

BK_START 1621254772189

Running Version 0
[2021-05-17 12:32:53] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, CTLFireability, -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]
[2021-05-17 12:32:53] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2021-05-17 12:32:55] [INFO ] Load time of PNML (sax parser for PT used): 1922 ms
[2021-05-17 12:32:55] [INFO ] Transformed 1399 places.
[2021-05-17 12:32:56] [INFO ] Transformed 144369 transitions.
[2021-05-17 12:32:56] [INFO ] Parsed PT model containing 1399 places and 144369 transitions in 2552 ms.
Parsed 16 properties from file /home/mcc/execution/CTLFireability.xml in 47 ms.
Support contains 682 out of 1399 places. Attempting structural reductions.
Starting structural reductions, iteration 0 : 1399/1399 places, 144369/144369 transitions.
Ensure Unique test removed 18 places
Iterating post reduction 0 with 18 rules applied. Total rules applied 18 place count 1381 transition count 144369
Applied a total of 18 rules in 1331 ms. Remains 1381 /1399 variables (removed 18) and now considering 144369/144369 (removed 0) transitions.
[2021-05-17 12:32:58] [INFO ] Flow matrix only has 81238 transitions (discarded 63131 similar events)
// Phase 1: matrix 81238 rows 1381 cols
[2021-05-17 12:32:59] [INFO ] Computed 19 place invariants in 643 ms
[2021-05-17 12:33:04] [INFO ] Implicit Places using invariants in 5504 ms returned []
Implicit Place search using SMT only with invariants took 5527 ms to find 0 implicit places.
[2021-05-17 12:33:04] [INFO ] Flow matrix only has 81238 transitions (discarded 63131 similar events)
// Phase 1: matrix 81238 rows 1381 cols
[2021-05-17 12:33:04] [INFO ] Computed 19 place invariants in 432 ms
[2021-05-17 12:33:35] [INFO ] Performed 88808/144369 'is it Dead' test of which 0 returned DEAD in 30 seconds.
[2021-05-17 12:33:52] [INFO ] Dead Transitions using invariants and state equation in 48521 ms returned []
Finished structural reductions, in 1 iterations. Remains : 1381/1399 places, 144369/144369 transitions.
[2021-05-17 12:33:58] [INFO ] Flatten gal took : 4454 ms
[2021-05-17 12:34:02] [INFO ] Flatten gal took : 4474 ms
[2021-05-17 12:34:12] [INFO ] Input system was already deterministic with 144369 transitions.
Incomplete random walk after 100000 steps, including 2 resets, run finished after 12573 ms. (steps per millisecond=7 ) properties (out of 68) seen :49
Running SMT prover for 19 properties.
[2021-05-17 12:34:25] [INFO ] Flow matrix only has 81238 transitions (discarded 63131 similar events)
// Phase 1: matrix 81238 rows 1381 cols
[2021-05-17 12:34:25] [INFO ] Computed 19 place invariants in 407 ms
[2021-05-17 12:34:26] [INFO ] [Real]Absence check using 19 positive place invariants in 13 ms returned sat
[2021-05-17 12:34:26] [INFO ] SMT Verify possible in real domain returnedunsat :0 sat :0 real:19
[2021-05-17 12:34:27] [INFO ] [Nat]Absence check using 19 positive place invariants in 10 ms returned sat
[2021-05-17 12:34:27] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2021-05-17 12:35:11] [INFO ] [Nat]Absence check using state equation in 43430 ms returned unsat :0 sat :19
[2021-05-17 12:35:16] [INFO ] State equation strengthened by 2277 read => feed constraints.
[2021-05-17 12:35:44] [INFO ] [Nat]Added 2277 Read/Feed constraints in 28721 ms returned sat
Attempting to minimize the solution found.
Minimization took 13003 ms.
[2021-05-17 12:36:06] [INFO ] SMT Verify possible in nat domain returned unsat :0 sat :17
Applied a total of 0 rules in 2632 ms. Remains 1381 /1381 variables (removed 0) and now considering 144369/144369 (removed 0) transitions.
[2021-05-17 12:36:17] [INFO ] Flatten gal took : 4505 ms
[2021-05-17 12:36:21] [INFO ] Flatten gal took : 3953 ms
[2021-05-17 12:36:31] [INFO ] Input system was already deterministic with 144369 transitions.
[2021-05-17 12:36:36] [INFO ] Flatten gal took : 4089 ms
[2021-05-17 12:36:39] [INFO ] Flatten gal took : 3752 ms
[2021-05-17 12:36:40] [INFO ] Time to serialize gal into /tmp/CTLFireability9324813575830801307.gal : 870 ms
[2021-05-17 12:36:40] [INFO ] Time to serialize properties into /tmp/CTLFireability14371796455801858694.ctl : 2 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-ctl-linux64, --gc-threshold, 2000000, --quiet, -i, /tmp/CTLFireability9324813575830801307.gal, -t, CGAL, -ctl, /tmp/CTLFireability14371796455801858694.ctl, --gen-order, FOLLOW], workingDir=/home/mcc/execution]

its-ctl command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -i /tmp/CTLFireability9324813575830801307.gal -t CGAL -ctl /tmp/CTLFireability14371796455801858694.ctl --gen-order FOLLOW
No direction supplied, using forward translation only.
Parsed 1 CTL formulae.
Detected timeout of ITS tools.
[2021-05-17 12:37:15] [INFO ] Flatten gal took : 3999 ms
[2021-05-17 12:37:15] [INFO ] Applying decomposition
[2021-05-17 12:37:19] [INFO ] Flatten gal took : 4245 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/graph18022108247300060121.txt, -o, /tmp/graph18022108247300060121.bin, -w, /tmp/graph18022108247300060121.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/graph18022108247300060121.bin, -l, -1, -v, -w, /tmp/graph18022108247300060121.weights, -q, 0, -e, 0.001], workingDir=null]
[2021-05-17 12:37:27] [INFO ] Decomposing Gal with order
[2021-05-17 12:37:27] [INFO ] Rewriting arrays to variables to allow decomposition.
[2021-05-17 12:37:39] [INFO ] Removed a total of 435453 redundant transitions.
[2021-05-17 12:37:40] [INFO ] Flatten gal took : 7582 ms
[2021-05-17 12:38:07] [INFO ] Fuse similar labels procedure discarded/fused a total of 4193 labels/synchronizations in 20668 ms.
[2021-05-17 12:38:08] [INFO ] Time to serialize gal into /tmp/CTLFireability13226840039481317575.gal : 360 ms
[2021-05-17 12:38:08] [INFO ] Time to serialize properties into /tmp/CTLFireability10282628450160828487.ctl : 2 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-ctl-linux64, --gc-threshold, 2000000, --quiet, -i, /tmp/CTLFireability13226840039481317575.gal, -t, CGAL, -ctl, /tmp/CTLFireability10282628450160828487.ctl], workingDir=/home/mcc/execution]

its-ctl command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -i /tmp/CTLFireability13226840039481317575.gal -t CGAL -ctl /tmp/CTLFireability10282628450160828487.ctl
Detected timeout of ITS tools.
Applied a total of 0 rules in 1892 ms. Remains 1381 /1381 variables (removed 0) and now considering 144369/144369 (removed 0) transitions.
[2021-05-17 12:38:46] [INFO ] Flatten gal took : 3838 ms
[2021-05-17 12:38:50] [INFO ] Flatten gal took : 3636 ms
[2021-05-17 12:38:58] [INFO ] Input system was already deterministic with 144369 transitions.
[2021-05-17 12:39:02] [INFO ] Flatten gal took : 3755 ms
[2021-05-17 12:39:06] [INFO ] Flatten gal took : 3884 ms
[2021-05-17 12:39:06] [INFO ] Time to serialize gal into /tmp/CTLFireability16990294051725330203.gal : 317 ms
[2021-05-17 12:39:06] [INFO ] Time to serialize properties into /tmp/CTLFireability15069089037699343413.ctl : 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-ctl-linux64, --gc-threshold, 2000000, --quiet, -i, /tmp/CTLFireability16990294051725330203.gal, -t, CGAL, -ctl, /tmp/CTLFireability15069089037699343413.ctl, --gen-order, FOLLOW], workingDir=/home/mcc/execution]

its-ctl command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -i /tmp/CTLFireability16990294051725330203.gal -t CGAL -ctl /tmp/CTLFireability15069089037699343413.ctl --gen-order FOLLOW
No direction supplied, using forward translation only.
Parsed 1 CTL formulae.
Detected timeout of ITS tools.
[2021-05-17 12:39:41] [INFO ] Flatten gal took : 4284 ms
[2021-05-17 12:39:41] [INFO ] Applying decomposition
[2021-05-17 12:39:45] [INFO ] Flatten gal took : 3615 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/graph14351472509404280314.txt, -o, /tmp/graph14351472509404280314.bin, -w, /tmp/graph14351472509404280314.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/graph14351472509404280314.bin, -l, -1, -v, -w, /tmp/graph14351472509404280314.weights, -q, 0, -e, 0.001], workingDir=null]
[2021-05-17 12:39:54] [INFO ] Decomposing Gal with order
[2021-05-17 12:39:54] [INFO ] Rewriting arrays to variables to allow decomposition.
[2021-05-17 12:40:06] [INFO ] Removed a total of 435739 redundant transitions.
[2021-05-17 12:40:07] [INFO ] Flatten gal took : 6654 ms
[2021-05-17 12:40:23] [INFO ] Fuse similar labels procedure discarded/fused a total of 2265 labels/synchronizations in 11425 ms.
[2021-05-17 12:40:23] [INFO ] Time to serialize gal into /tmp/CTLFireability15526808093014068324.gal : 204 ms
[2021-05-17 12:40:23] [INFO ] Time to serialize properties into /tmp/CTLFireability5550223103287024957.ctl : 2 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-ctl-linux64, --gc-threshold, 2000000, --quiet, -i, /tmp/CTLFireability15526808093014068324.gal, -t, CGAL, -ctl, /tmp/CTLFireability5550223103287024957.ctl], workingDir=/home/mcc/execution]

its-ctl command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -i /tmp/CTLFireability15526808093014068324.gal -t CGAL -ctl /tmp/CTLFireability5550223103287024957.ctl
Detected timeout of ITS tools.
Applied a total of 0 rules in 1176 ms. Remains 1381 /1381 variables (removed 0) and now considering 144369/144369 (removed 0) transitions.
[2021-05-17 12:41:02] [INFO ] Flatten gal took : 3572 ms
[2021-05-17 12:41:06] [INFO ] Flatten gal took : 4084 ms
[2021-05-17 12:41:14] [INFO ] Input system was already deterministic with 144369 transitions.
[2021-05-17 12:41:18] [INFO ] Flatten gal took : 3851 ms
[2021-05-17 12:41:22] [INFO ] Flatten gal took : 4068 ms
[2021-05-17 12:41:22] [INFO ] Time to serialize gal into /tmp/CTLFireability13840032930312638879.gal : 337 ms
[2021-05-17 12:41:22] [INFO ] Time to serialize properties into /tmp/CTLFireability3015352874681707453.ctl : 3 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-ctl-linux64, --gc-threshold, 2000000, --quiet, -i, /tmp/CTLFireability13840032930312638879.gal, -t, CGAL, -ctl, /tmp/CTLFireability3015352874681707453.ctl, --gen-order, FOLLOW], workingDir=/home/mcc/execution]

its-ctl command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -i /tmp/CTLFireability13840032930312638879.gal -t CGAL -ctl /tmp/CTLFireability3015352874681707453.ctl --gen-order FOLLOW
Detected timeout of ITS tools.
[2021-05-17 12:41:59] [INFO ] Flatten gal took : 4928 ms
[2021-05-17 12:41:59] [INFO ] Applying decomposition
[2021-05-17 12:42:03] [INFO ] Flatten gal took : 4146 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/graph1225780147623002001.txt, -o, /tmp/graph1225780147623002001.bin, -w, /tmp/graph1225780147623002001.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/graph1225780147623002001.bin, -l, -1, -v, -w, /tmp/graph1225780147623002001.weights, -q, 0, -e, 0.001], workingDir=null]
[2021-05-17 12:42:14] [INFO ] Decomposing Gal with order
[2021-05-17 12:42:14] [INFO ] Rewriting arrays to variables to allow decomposition.
[2021-05-17 12:42:26] [INFO ] Removed a total of 435715 redundant transitions.
[2021-05-17 12:42:28] [INFO ] Flatten gal took : 9102 ms
[2021-05-17 12:42:53] [INFO ] Fuse similar labels procedure discarded/fused a total of 2169 labels/synchronizations in 21010 ms.
[2021-05-17 12:42:53] [INFO ] Time to serialize gal into /tmp/CTLFireability12151615778968871409.gal : 250 ms
[2021-05-17 12:42:53] [INFO ] Time to serialize properties into /tmp/CTLFireability8106101098586554406.ctl : 2 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-ctl-linux64, --gc-threshold, 2000000, --quiet, -i, /tmp/CTLFireability12151615778968871409.gal, -t, CGAL, -ctl, /tmp/CTLFireability8106101098586554406.ctl], workingDir=/home/mcc/execution]

its-ctl command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -i /tmp/CTLFireability12151615778968871409.gal -t CGAL -ctl /tmp/CTLFireability8106101098586554406.ctl
Detected timeout of ITS tools.
Reduce places removed 1 places and 1 transitions.
Applied a total of 0 rules in 3519 ms. Remains 1380 /1381 variables (removed 1) and now considering 144368/144369 (removed 1) transitions.
[2021-05-17 12:43:37] [INFO ] Flatten gal took : 5207 ms
[2021-05-17 12:43:41] [INFO ] Flatten gal took : 3853 ms
[2021-05-17 12:43:49] [INFO ] Input system was already deterministic with 144368 transitions.
[2021-05-17 12:43:57] [INFO ] Flatten gal took : 6627 ms
[2021-05-17 12:44:01] [INFO ] Flatten gal took : 4724 ms
[2021-05-17 12:44:02] [INFO ] Time to serialize gal into /tmp/CTLFireability9267707385670044047.gal : 390 ms
[2021-05-17 12:44:02] [INFO ] Time to serialize properties into /tmp/CTLFireability16332953438708218668.ctl : 2 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-ctl-linux64, --gc-threshold, 2000000, --quiet, -i, /tmp/CTLFireability9267707385670044047.gal, -t, CGAL, -ctl, /tmp/CTLFireability16332953438708218668.ctl, --gen-order, FOLLOW], workingDir=/home/mcc/execution]

its-ctl command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -i /tmp/CTLFireability9267707385670044047.gal -t CGAL -ctl /tmp/CTLFireability16332953438708218668.ctl --gen-order FOLLOW
Detected timeout of ITS tools.
[2021-05-17 12:44:39] [INFO ] Flatten gal took : 6193 ms
[2021-05-17 12:44:39] [INFO ] Applying decomposition
[2021-05-17 12:44:43] [INFO ] Flatten gal took : 4496 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/graph9869531558038120100.txt, -o, /tmp/graph9869531558038120100.bin, -w, /tmp/graph9869531558038120100.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/graph9869531558038120100.bin, -l, -1, -v, -w, /tmp/graph9869531558038120100.weights, -q, 0, -e, 0.001], workingDir=null]
[2021-05-17 12:44:55] [INFO ] Decomposing Gal with order
[2021-05-17 12:44:55] [INFO ] Rewriting arrays to variables to allow decomposition.
[2021-05-17 12:45:08] [INFO ] Removed a total of 435591 redundant transitions.
[2021-05-17 12:45:09] [INFO ] Flatten gal took : 8483 ms
[2021-05-17 12:45:34] [INFO ] Fuse similar labels procedure discarded/fused a total of 4355 labels/synchronizations in 20170 ms.
[2021-05-17 12:45:34] [INFO ] Time to serialize gal into /tmp/CTLFireability3568725423146796018.gal : 239 ms
[2021-05-17 12:45:34] [INFO ] Time to serialize properties into /tmp/CTLFireability10265447886362326956.ctl : 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-ctl-linux64, --gc-threshold, 2000000, --quiet, -i, /tmp/CTLFireability3568725423146796018.gal, -t, CGAL, -ctl, /tmp/CTLFireability10265447886362326956.ctl], workingDir=/home/mcc/execution]

its-ctl command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -i /tmp/CTLFireability3568725423146796018.gal -t CGAL -ctl /tmp/CTLFireability10265447886362326956.ctl
Detected timeout of ITS tools.
Reduce places removed 1 places and 1 transitions.
Applied a total of 0 rules in 3802 ms. Remains 1380 /1381 variables (removed 1) and now considering 144368/144369 (removed 1) transitions.
[2021-05-17 12:46:17] [INFO ] Flatten gal took : 5580 ms
[2021-05-17 12:46:21] [INFO ] Flatten gal took : 4228 ms
[2021-05-17 12:46:31] [INFO ] Input system was already deterministic with 144368 transitions.
[2021-05-17 12:46:38] [INFO ] Flatten gal took : 5814 ms
[2021-05-17 12:46:42] [INFO ] Flatten gal took : 4666 ms
[2021-05-17 12:46:43] [INFO ] Time to serialize gal into /tmp/CTLFireability8490845276667777755.gal : 446 ms
[2021-05-17 12:46:43] [INFO ] Time to serialize properties into /tmp/CTLFireability11944646255238763945.ctl : 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-ctl-linux64, --gc-threshold, 2000000, --quiet, -i, /tmp/CTLFireability8490845276667777755.gal, -t, CGAL, -ctl, /tmp/CTLFireability11944646255238763945.ctl, --gen-order, FOLLOW], workingDir=/home/mcc/execution]

its-ctl command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -i /tmp/CTLFireability8490845276667777755.gal -t CGAL -ctl /tmp/CTLFireability11944646255238763945.ctl --gen-order FOLLOW
Detected timeout of ITS tools.
[2021-05-17 12:47:19] [INFO ] Flatten gal took : 5916 ms
[2021-05-17 12:47:19] [INFO ] Applying decomposition
[2021-05-17 12:47:24] [INFO ] Flatten gal took : 4592 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/graph6697398285267255244.txt, -o, /tmp/graph6697398285267255244.bin, -w, /tmp/graph6697398285267255244.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/graph6697398285267255244.bin, -l, -1, -v, -w, /tmp/graph6697398285267255244.weights, -q, 0, -e, 0.001], workingDir=null]
[2021-05-17 12:47:37] [INFO ] Decomposing Gal with order
[2021-05-17 12:47:37] [INFO ] Rewriting arrays to variables to allow decomposition.
[2021-05-17 12:47:51] [INFO ] Removed a total of 435607 redundant transitions.
[2021-05-17 12:47:52] [INFO ] Flatten gal took : 9758 ms
[2021-05-17 12:48:09] [INFO ] Fuse similar labels procedure discarded/fused a total of 3758 labels/synchronizations in 12032 ms.
[2021-05-17 12:48:10] [INFO ] Time to serialize gal into /tmp/CTLFireability16327618274676237061.gal : 410 ms
[2021-05-17 12:48:10] [INFO ] Time to serialize properties into /tmp/CTLFireability9045920498460483321.ctl : 2 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-ctl-linux64, --gc-threshold, 2000000, --quiet, -i, /tmp/CTLFireability16327618274676237061.gal, -t, CGAL, -ctl, /tmp/CTLFireability9045920498460483321.ctl], workingDir=/home/mcc/execution]

its-ctl command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -i /tmp/CTLFireability16327618274676237061.gal -t CGAL -ctl /tmp/CTLFireability9045920498460483321.ctl
Detected timeout of ITS tools.
Reduce places removed 1 places and 1 transitions.
Applied a total of 0 rules in 4474 ms. Remains 1380 /1381 variables (removed 1) and now considering 144368/144369 (removed 1) transitions.
[2021-05-17 12:48:53] [INFO ] Flatten gal took : 5263 ms
[2021-05-17 12:48:57] [INFO ] Flatten gal took : 4419 ms
[2021-05-17 12:49:07] [INFO ] Input system was already deterministic with 144368 transitions.
[2021-05-17 12:49:12] [INFO ] Flatten gal took : 4849 ms
[2021-05-17 12:49:17] [INFO ] Flatten gal took : 4898 ms
[2021-05-17 12:49:18] [INFO ] Time to serialize gal into /tmp/CTLFireability9328570435347703408.gal : 455 ms
[2021-05-17 12:49:18] [INFO ] Time to serialize properties into /tmp/CTLFireability3011706335842045651.ctl : 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-ctl-linux64, --gc-threshold, 2000000, --quiet, -i, /tmp/CTLFireability9328570435347703408.gal, -t, CGAL, -ctl, /tmp/CTLFireability3011706335842045651.ctl, --gen-order, FOLLOW], workingDir=/home/mcc/execution]

its-ctl command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -i /tmp/CTLFireability9328570435347703408.gal -t CGAL -ctl /tmp/CTLFireability3011706335842045651.ctl --gen-order FOLLOW
ITS-tools command line returned an error code 137
[2021-05-17 12:49:52] [INFO ] Flatten gal took : 7835 ms
[2021-05-17 12:49:52] [INFO ] Applying decomposition
[2021-05-17 12:49:57] [INFO ] Flatten gal took : 4290 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/graph12137140224364229613.txt, -o, /tmp/graph12137140224364229613.bin, -w, /tmp/graph12137140224364229613.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/graph12137140224364229613.bin, -l, -1, -v, -w, /tmp/graph12137140224364229613.weights, -q, 0, -e, 0.001], workingDir=null]
[2021-05-17 12:50:10] [INFO ] Decomposing Gal with order
[2021-05-17 12:50:10] [INFO ] Rewriting arrays to variables to allow decomposition.
[2021-05-17 12:50:24] [INFO ] Removed a total of 435823 redundant transitions.
[2021-05-17 12:50:25] [INFO ] Flatten gal took : 9428 ms
[2021-05-17 12:50:41] [INFO ] Fuse similar labels procedure discarded/fused a total of 2086 labels/synchronizations in 10897 ms.
[2021-05-17 12:50:41] [INFO ] Time to serialize gal into /tmp/CTLFireability683382759315428590.gal : 213 ms
[2021-05-17 12:50:41] [INFO ] Time to serialize properties into /tmp/CTLFireability18062060178227517547.ctl : 2 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-ctl-linux64, --gc-threshold, 2000000, --quiet, -i, /tmp/CTLFireability683382759315428590.gal, -t, CGAL, -ctl, /tmp/CTLFireability18062060178227517547.ctl], workingDir=/home/mcc/execution]

its-ctl command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -i /tmp/CTLFireability683382759315428590.gal -t CGAL -ctl /tmp/CTLFireability18062060178227517547.ctl
Detected timeout of ITS tools.
Reduce places removed 1 places and 1 transitions.
Applied a total of 0 rules in 2844 ms. Remains 1380 /1381 variables (removed 1) and now considering 144368/144369 (removed 1) transitions.
[2021-05-17 12:51:22] [INFO ] Flatten gal took : 4199 ms
[2021-05-17 12:51:26] [INFO ] Flatten gal took : 3838 ms
[2021-05-17 12:51:34] [INFO ] Input system was already deterministic with 144368 transitions.
Incomplete random walk after 10000 steps, including 2 resets, run finished after 2443 ms. (steps per millisecond=4 ) properties (out of 1) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 84 ms. (steps per millisecond=119 ) properties (out of 1) seen :0
Interrupted probabilistic random walk after 29189 steps, run timeout after 30002 ms. (steps per millisecond=0 ) properties seen :{}
Probabilistic random walk after 29189 steps, saw 25123 distinct states, run finished after 30038 ms. (steps per millisecond=0 ) properties seen :{}
Running SMT prover for 1 properties.
[2021-05-17 12:52:07] [INFO ] Flow matrix only has 81237 transitions (discarded 63131 similar events)
// Phase 1: matrix 81237 rows 1380 cols
[2021-05-17 12:52:07] [INFO ] Computed 19 place invariants in 338 ms
[2021-05-17 12:52:08] [INFO ] [Real]Absence check using 19 positive place invariants in 12 ms returned sat
[2021-05-17 12:52:08] [INFO ] SMT Verify possible in real domain returnedunsat :0 sat :0 real:1
[2021-05-17 12:52:08] [INFO ] [Nat]Absence check using 19 positive place invariants in 18 ms returned sat
[2021-05-17 12:52:08] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2021-05-17 12:52:27] [INFO ] [Nat]Absence check using state equation in 18773 ms returned unsat :0 sat :1
[2021-05-17 12:52:42] [INFO ] State equation strengthened by 2245 read => feed constraints.
[2021-05-17 12:52:42] [WARNING] SMT solver failed with error :SMT solver raised an error when submitting script.... while checking expressions.
Support contains 16 out of 1380 places. Attempting structural reductions.
Starting structural reductions, iteration 0 : 1380/1380 places, 144368/144368 transitions.
Applied a total of 0 rules in 2706 ms. Remains 1380 /1380 variables (removed 0) and now considering 144368/144368 (removed 0) transitions.
Finished structural reductions, in 1 iterations. Remains : 1380/1380 places, 144368/144368 transitions.
Finished random walk after 3653 steps, including 0 resets, run visited all 1 properties in 329 ms. (steps per millisecond=11 )
[2021-05-17 12:52:50] [INFO ] Flatten gal took : 4094 ms
[2021-05-17 12:52:55] [INFO ] Flatten gal took : 4531 ms
[2021-05-17 12:52:55] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality12252388928423930621.gal : 479 ms
[2021-05-17 12:52:55] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality8111236142176800104.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/ReachabilityCardinality12252388928423930621.gal, -t, CGAL, -reachable-file, /tmp/ReachabilityCardinality8111236142176800104.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/ReachabilityCardinality12252388928423930621.gal -t CGAL -reachable-file /tmp/ReachabilityCardinality8111236142176800104.prop --nowitness --gen-order FOLLOW
Detected timeout of ITS tools.
[2021-05-17 12:53:17] [INFO ] Flatten gal took : 5647 ms
[2021-05-17 12:53:17] [INFO ] Applying decomposition
[2021-05-17 12:53:20] [INFO ] Flatten gal took : 3809 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/graph11407361931354987146.txt, -o, /tmp/graph11407361931354987146.bin, -w, /tmp/graph11407361931354987146.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/graph11407361931354987146.bin, -l, -1, -v, -w, /tmp/graph11407361931354987146.weights, -q, 0, -e, 0.001], workingDir=null]
[2021-05-17 12:53:29] [INFO ] Decomposing Gal with order
[2021-05-17 12:53:30] [INFO ] Rewriting arrays to variables to allow decomposition.
[2021-05-17 12:53:40] [INFO ] Removed a total of 435728 redundant transitions.
[2021-05-17 12:53:41] [INFO ] Flatten gal took : 6927 ms
[2021-05-17 12:53:57] [INFO ] Fuse similar labels procedure discarded/fused a total of 2246 labels/synchronizations in 12111 ms.
[2021-05-17 12:53:57] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality187837686112493345.gal : 280 ms
[2021-05-17 12:53:57] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality13707202015539308995.prop : 2 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/ReachabilityCardinality187837686112493345.gal, -t, CGAL, -reachable-file, /tmp/ReachabilityCardinality13707202015539308995.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/ReachabilityCardinality187837686112493345.gal -t CGAL -reachable-file /tmp/ReachabilityCardinality13707202015539308995.prop --nowitness
Detected timeout of ITS tools.
Built C files in :
/tmp/ltsmin18202658432959280891
[2021-05-17 12:54:13] [INFO ] Built C files in 1273ms conformant to PINS (ltsmin variant)in folder :/tmp/ltsmin18202658432959280891
Running compilation step : CommandLine [args=[gcc, -c, -I/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202104292328/bin/include/, -I., -std=c99, -fPIC, -O2, model.c], workingDir=/tmp/ltsmin18202658432959280891]
WARNING : LTS min runner thread failed on error :java.lang.RuntimeException: Compilation or link of executable timed out.java.util.concurrent.TimeoutException: Subprocess running CommandLine [args=[gcc, -c, -I/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202104292328/bin/include/, -I., -std=c99, -fPIC, -O2, model.c], workingDir=/tmp/ltsmin18202658432959280891] killed by timeout after 1 SECONDS
java.lang.RuntimeException: Compilation or link of executable timed out.java.util.concurrent.TimeoutException: Subprocess running CommandLine [args=[gcc, -c, -I/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202104292328/bin/include/, -I., -std=c99, -fPIC, -O2, model.c], workingDir=/tmp/ltsmin18202658432959280891] killed by timeout after 1 SECONDS
at fr.lip6.move.gal.application.LTSminRunner$1.run(LTSminRunner.java:79)
at java.base/java.lang.Thread.run(Thread.java:834)
Finished random walk after 9842 steps, including 0 resets, run visited all 1 properties in 1568 ms. (steps per millisecond=6 )
FORMULA RERS17pb115-PT-7-CTLFireability-15 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
[2021-05-17 12:54:21] [INFO ] Flatten gal took : 4586 ms
[2021-05-17 12:54:25] [INFO ] Flatten gal took : 4294 ms
[2021-05-17 12:54:28] [INFO ] Applying decomposition
[2021-05-17 12:54:34] [INFO ] Flatten gal took : 5672 ms

BK_STOP 1621256086914

--------------------
content from stderr:

+ export BINDIR=/home/mcc/BenchKit/bin//../
+ BINDIR=/home/mcc/BenchKit/bin//../
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ CTLFireability = StateSpace ]]
+ /home/mcc/BenchKit/bin//..//runeclipse.sh /home/mcc/execution CTLFireability -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 CTLFireability -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="RERS17pb115-PT-7"
export BK_EXAMINATION="CTLFireability"
export BK_TOOL="itstools"
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 itstools"
echo " Input is RERS17pb115-PT-7, examination is CTLFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r178-tajo-162089415600314"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/RERS17pb115-PT-7.tgz
mv RERS17pb115-PT-7 execution
cd execution
if [ "CTLFireability" = "ReachabilityDeadlock" ] || [ "CTLFireability" = "UpperBounds" ] || [ "CTLFireability" = "QuasiLiveness" ] || [ "CTLFireability" = "StableMarking" ] || [ "CTLFireability" = "Liveness" ] || [ "CTLFireability" = "OneSafe" ] || [ "CTLFireability" = "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 [ "CTLFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "CTLFireability" != "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 "CTLFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property CTLFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "CTLFireability.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 '' CTLFireability.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "CTLFireability" = "ReachabilityDeadlock" ] || [ "CTLFireability" = "QuasiLiveness" ] || [ "CTLFireability" = "StableMarking" ] || [ "CTLFireability" = "Liveness" ] || [ "CTLFireability" = "OneSafe" ] ; then
echo "FORMULA_NAME CTLFireability"
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 ;