fond
Model Checking Contest 2021
11th edition, Paris, France, June 23, 2021
Execution of r170-oct2-162089287000044
Last Updated
Jun 28, 2021

About the Execution of 2020-gold for PolyORBLF-COL-S02J04T08

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
329.552 3600000.00 24060.00 69.70 FFTTTFFTTTFFTTFF normal

Execution Chart

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

Trace from the execution

Formatting '/data/fko/mcc2021-input.r170-oct2-162089287000044.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fko/mcc2021-input.qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
................................................................................................................................................................................................................................................................................................................................
=====================================================================
Generated by BenchKit 2-4028
Executing tool gold2020
Input is PolyORBLF-COL-S02J04T08, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r170-oct2-162089287000044
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 580K
-rw-r--r-- 1 mcc users 24K May 5 16:58 CTLCardinality.txt
-rw-r--r-- 1 mcc users 159K May 10 09:43 CTLCardinality.xml
-rw-r--r-- 1 mcc users 13K May 5 16:58 CTLFireability.txt
-rw-r--r-- 1 mcc users 95K May 10 09:43 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 6 14:48 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.3K May 6 14:48 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 4.0K Mar 28 16:26 LTLCardinality.txt
-rw-r--r-- 1 mcc users 25K Mar 28 16:26 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.1K Mar 28 16:27 LTLFireability.txt
-rw-r--r-- 1 mcc users 15K Mar 28 16:27 LTLFireability.xml
-rw-r--r-- 1 mcc users 3.6K Mar 27 09:20 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 16K Mar 27 09:20 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 2.8K Mar 25 11:53 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 14K Mar 25 11:52 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.9K Mar 22 09:16 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.9K Mar 22 09:16 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 May 5 16:51 equiv_pt
-rw-r--r-- 1 mcc users 10 May 5 16:51 instance
-rw-r--r-- 1 mcc users 5 May 5 16:51 iscolored
-rw-r--r-- 1 mcc users 154K 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 PolyORBLF-COL-S02J04T08-ReachabilityFireability-00
FORMULA_NAME PolyORBLF-COL-S02J04T08-ReachabilityFireability-01
FORMULA_NAME PolyORBLF-COL-S02J04T08-ReachabilityFireability-02
FORMULA_NAME PolyORBLF-COL-S02J04T08-ReachabilityFireability-03
FORMULA_NAME PolyORBLF-COL-S02J04T08-ReachabilityFireability-04
FORMULA_NAME PolyORBLF-COL-S02J04T08-ReachabilityFireability-05
FORMULA_NAME PolyORBLF-COL-S02J04T08-ReachabilityFireability-06
FORMULA_NAME PolyORBLF-COL-S02J04T08-ReachabilityFireability-07
FORMULA_NAME PolyORBLF-COL-S02J04T08-ReachabilityFireability-08
FORMULA_NAME PolyORBLF-COL-S02J04T08-ReachabilityFireability-09
FORMULA_NAME PolyORBLF-COL-S02J04T08-ReachabilityFireability-10
FORMULA_NAME PolyORBLF-COL-S02J04T08-ReachabilityFireability-11
FORMULA_NAME PolyORBLF-COL-S02J04T08-ReachabilityFireability-12
FORMULA_NAME PolyORBLF-COL-S02J04T08-ReachabilityFireability-13
FORMULA_NAME PolyORBLF-COL-S02J04T08-ReachabilityFireability-14
FORMULA_NAME PolyORBLF-COL-S02J04T08-ReachabilityFireability-15

=== Now, execution of the tool begins

BK_START 1621374792351

bash -c /home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n "BK_STOP " ; date -u +%s%3N
[2021-05-18 21:53:14] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityFireability, -z3path, /home/mcc/BenchKit//z3/bin/z3, -yices2path, /home/mcc/BenchKit//yices/bin/yices, -timeout, 3600, -rebuildPNML]
[2021-05-18 21:53:14] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2021-05-18 21:53:14] [INFO ] Detected file is not PT type :http://www.pnml.org/version-2009/grammar/symmetricnet
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
[2021-05-18 21:53:14] [INFO ] Load time of PNML (colored model parsed with PNMLFW) : 601 ms
[2021-05-18 21:53:14] [INFO ] sort/places :
D4->DisablePollingE,DisablePollingB,Insert_Source_B,P_1119,P_2579,
Threads->AwakeTasks,IdleTasks,NotifyEventJobQueuedE,QueueJobE,P_2321,TryAllocateOneTaskE,TryAllocateOneTaskB,P_2318,EnablePollingE,EnablePollingB,FetchJobB,ScheduleTaskE_Check,ScheduleTaskB,Abort_Check_Sources_E,Abort_Check_Sources_B,NotifyEventSourceAddedB,Insert_Source_E,NotifyEventSourceAddedE,P_1113,ProcessingEvt,P_1155,nyo,P_1158,P_1159,P_1160,NotifyEventEndOfCheckSourcesB,NotifyEventEndOfCheckSourcesE,Check_Sources_B,Check_Sources_E,Idle,NotifyEventJobCompletedE,NotifyEventJobCompletedB,RunE,RunB,Perform_Work_E,Try_Check_Sources_B,Try_Check_Sources_E,P_1617,ScheduleTaskE_Idle,
D6->CreatedJobs,
Jobs->P_1725,P_1724,P_1712,AvailableJobId,
Dot->cJobCnt,JobCnt,cBlockedTasks,PollingAbort,cPollingAbort,BlockedTasks,MarkerWrite,P_1727,P_1726,MarkerRead,P_1717,P_1716,CanInjectEvent,SigAbort,NoSigAbort,P_1093,P_1095,P_1097,P_1099,cSources,cIsMonitoring,IsMonitoring,cIdleTasks,ORB_Lock,
Sources->DataOnSrc,PlaceSources,ModifiedSrc,AbourtToModifySrc,
D1->NotifyEventJobQueuedB,QueueJobB,FetchJobE,ScheduleTaskE_Work,

[2021-05-18 21:53:14] [INFO ] ms2 symmetric to ms1 in transition T_1124
[2021-05-18 21:53:14] [INFO ] ms3 symmetric to ms2 in transition T_1125
[2021-05-18 21:53:14] [INFO ] ms2 symmetric to ms1 in transition T_1125
[2021-05-18 21:53:14] [INFO ] ms3 symmetric to ms2 in transition T_1126
[2021-05-18 21:53:14] [INFO ] ms2 symmetric to ms1 in transition T_1126
[2021-05-18 21:53:14] [INFO ] ms1 symmetric to ms4 in transition T_1126
[2021-05-18 21:53:14] [INFO ] Imported 81 HL places and 65 HL transitions for a total of 614 PT places and 1300.0 transition bindings in 23 ms.
[2021-05-18 21:53:14] [INFO ] Computed order based on color domains.
[2021-05-18 21:53:14] [INFO ] Unfolded HLPN to a Petri net with 614 places and 1114 transitions in 23 ms.
[2021-05-18 21:53:14] [INFO ] Unfolded HLPN properties in 0 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityFireability.xml in 52 ms.
Working with output stream class java.io.PrintStream
Incomplete random walk after 10000 steps, including 4 resets, run finished after 163 ms. (steps per millisecond=61 ) properties seen :[1, 1, 1, 0, 0, 0, 0, 1, 1, 0, 1, 0, 1, 1, 1, 0]
FORMULA PolyORBLF-COL-S02J04T08-ReachabilityFireability-14 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-COL-S02J04T08-ReachabilityFireability-13 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-COL-S02J04T08-ReachabilityFireability-12 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-COL-S02J04T08-ReachabilityFireability-10 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-COL-S02J04T08-ReachabilityFireability-08 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-COL-S02J04T08-ReachabilityFireability-07 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-COL-S02J04T08-ReachabilityFireability-02 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-COL-S02J04T08-ReachabilityFireability-01 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-COL-S02J04T08-ReachabilityFireability-00 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
Incomplete Best-First random walk after 10001 steps, including 1 resets, run finished after 113 ms. (steps per millisecond=88 ) properties seen :[0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10000 steps, including 0 resets, run finished after 79 ms. (steps per millisecond=126 ) properties seen :[0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 1 resets, run finished after 108 ms. (steps per millisecond=92 ) properties seen :[0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 153 ms. (steps per millisecond=65 ) properties seen :[0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10000 steps, including 3 resets, run finished after 83 ms. (steps per millisecond=120 ) properties seen :[0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 61 ms. (steps per millisecond=163 ) properties seen :[0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 81 ms. (steps per millisecond=123 ) properties seen :[0, 0, 0, 0, 0, 0, 0]
[2021-05-18 21:53:15] [INFO ] Flow matrix only has 1098 transitions (discarded 16 similar events)
// Phase 1: matrix 1098 rows 614 cols
[2021-05-18 21:53:15] [INFO ] Computed 50 place invariants in 51 ms
[2021-05-18 21:53:15] [INFO ] [Real]Absence check using 14 positive place invariants in 36 ms returned sat
[2021-05-18 21:53:15] [INFO ] [Real]Absence check using 14 positive and 36 generalized place invariants in 144 ms returned unsat
[2021-05-18 21:53:16] [INFO ] [Real]Absence check using 14 positive place invariants in 14 ms returned unsat
[2021-05-18 21:53:16] [INFO ] [Real]Absence check using 14 positive place invariants in 26 ms returned sat
[2021-05-18 21:53:16] [INFO ] [Real]Absence check using 14 positive and 36 generalized place invariants in 36 ms returned unsat
[2021-05-18 21:53:16] [INFO ] [Real]Absence check using 14 positive place invariants in 22 ms returned sat
[2021-05-18 21:53:16] [INFO ] [Real]Absence check using 14 positive and 36 generalized place invariants in 40 ms returned unsat
[2021-05-18 21:53:16] [INFO ] [Real]Absence check using 14 positive place invariants in 15 ms returned unsat
[2021-05-18 21:53:16] [INFO ] [Real]Absence check using 14 positive place invariants in 19 ms returned sat
[2021-05-18 21:53:16] [INFO ] [Real]Absence check using 14 positive and 36 generalized place invariants in 39 ms returned sat
[2021-05-18 21:53:16] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-18 21:53:18] [INFO ] [Real]Absence check using state equation in 1563 ms returned sat
[2021-05-18 21:53:18] [INFO ] Solution in real domain found non-integer solution.
[2021-05-18 21:53:18] [INFO ] [Nat]Absence check using 14 positive place invariants in 24 ms returned sat
[2021-05-18 21:53:18] [INFO ] [Nat]Absence check using 14 positive and 36 generalized place invariants in 66 ms returned sat
[2021-05-18 21:53:18] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2021-05-18 21:53:20] [INFO ] [Nat]Absence check using state equation in 2299 ms returned sat
[2021-05-18 21:53:20] [INFO ] State equation strengthened by 104 read => feed constraints.
[2021-05-18 21:53:21] [INFO ] [Nat]Added 104 Read/Feed constraints in 821 ms returned sat
[2021-05-18 21:53:21] [INFO ] Deduced a trap composed of 65 places in 132 ms
[2021-05-18 21:53:21] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 323 ms
[2021-05-18 21:53:21] [INFO ] Computed and/alt/rep : 1112/13950/1096 causal constraints in 147 ms.
[2021-05-18 21:53:23] [INFO ] Added : 85 causal constraints over 17 iterations in 1388 ms. Result :unknown
[2021-05-18 21:53:23] [INFO ] [Real]Absence check using 14 positive place invariants in 56 ms returned unsat
FORMULA PolyORBLF-COL-S02J04T08-ReachabilityFireability-15 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA PolyORBLF-COL-S02J04T08-ReachabilityFireability-09 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA PolyORBLF-COL-S02J04T08-ReachabilityFireability-06 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA PolyORBLF-COL-S02J04T08-ReachabilityFireability-05 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA PolyORBLF-COL-S02J04T08-ReachabilityFireability-04 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA PolyORBLF-COL-S02J04T08-ReachabilityFireability-03 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
Incomplete Parikh walk after 236800 steps, including 1000 resets, run finished after 657 ms. (steps per millisecond=360 ) properties seen :[0] could not realise parikh vector
Support contains 8 out of 614 places. Attempting structural reductions.
Starting structural reductions, iteration 0 : 614/614 places, 1114/1114 transitions.
Ensure Unique test removed 2 places
Performed 72 Post agglomeration using F-continuation condition.Transition count delta: 72
Iterating post reduction 0 with 74 rules applied. Total rules applied 74 place count 612 transition count 1042
Reduce places removed 72 places and 0 transitions.
Iterating post reduction 1 with 72 rules applied. Total rules applied 146 place count 540 transition count 1042
Performed 64 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 64 Pre rules applied. Total rules applied 146 place count 540 transition count 978
Deduced a syphon composed of 64 places in 2 ms
Reduce places removed 64 places and 0 transitions.
Iterating global reduction 2 with 128 rules applied. Total rules applied 274 place count 476 transition count 978
Performed 64 Post agglomeration using F-continuation condition.Transition count delta: 64
Deduced a syphon composed of 64 places in 1 ms
Reduce places removed 64 places and 0 transitions.
Iterating global reduction 2 with 128 rules applied. Total rules applied 402 place count 412 transition count 914
Free-agglomeration rule (complex) applied 16 times.
Iterating global reduction 2 with 16 rules applied. Total rules applied 418 place count 412 transition count 898
Reduce places removed 16 places and 0 transitions.
Iterating post reduction 2 with 16 rules applied. Total rules applied 434 place count 396 transition count 898
Applied a total of 434 rules in 129 ms. Remains 396 /614 variables (removed 218) and now considering 898/1114 (removed 216) transitions.
[2021-05-18 21:53:24] [INFO ] Flow matrix only has 882 transitions (discarded 16 similar events)
// Phase 1: matrix 882 rows 396 cols
[2021-05-18 21:53:24] [INFO ] Computed 48 place invariants in 14 ms
[2021-05-18 21:53:25] [INFO ] Dead Transitions using invariants and state equation in 1782 ms returned [788, 790, 791, 792, 793, 794, 795, 796, 797, 798, 799, 802, 804, 805, 806, 807, 808, 809, 810, 811, 812, 813, 816, 818, 819, 820, 821, 822, 823, 824, 825, 826, 827, 830, 832, 833, 834, 835, 836, 837, 838, 839, 840, 841, 844, 846, 847, 848, 849, 850, 851, 852, 853, 854, 855, 858, 860, 861, 862, 863, 864, 865, 866, 867, 868, 869, 872, 874, 875, 876, 877, 878, 879, 880, 881, 882, 883, 886, 888, 889, 890, 891, 892, 893, 894, 895, 896, 897]
Found 88 dead transitions using SMT.
Drop transitions removed 88 transitions
Dead transitions reduction (with SMT) triggered by suspicious arc values removed 88 transitions :[897, 896, 895, 894, 893, 892, 891, 890, 889, 888, 886, 883, 882, 881, 880, 879, 878, 877, 876, 875, 874, 872, 869, 868, 867, 866, 865, 864, 863, 862, 861, 860, 858, 855, 854, 853, 852, 851, 850, 849, 848, 847, 846, 844, 841, 840, 839, 838, 837, 836, 835, 834, 833, 832, 830, 827, 826, 825, 824, 823, 822, 821, 820, 819, 818, 816, 813, 812, 811, 810, 809, 808, 807, 806, 805, 804, 802, 799, 798, 797, 796, 795, 794, 793, 792, 791, 790, 788]
Starting structural reductions, iteration 1 : 396/614 places, 810/1114 transitions.
Reduce places removed 2 places and 16 transitions.
Discarding 386 places :
Also discarding 786 output transitions
Drop transitions removed 786 transitions
Graph (complete) has 2414 edges and 394 vertex of which 8 are kept as prefixes of interest. Removing 386 places using SCC suffix rule.6 ms
Iterating post reduction 0 with 3 rules applied. Total rules applied 3 place count 8 transition count 8
Reduce places removed 0 places and 8 transitions.
Deduced a syphon composed of 8 places in 0 ms
Applied a total of 3 rules in 9 ms. Remains 8 /396 variables (removed 388) and now considering 0/810 (removed 810) transitions.
Finished structural reductions, in 2 iterations. Remains : 8/614 places, 0/1114 transitions.
Deduced a syphon composed of 8 places in 0 ms
Reduce places removed 8 places and 0 transitions.
FORMULA PolyORBLF-COL-S02J04T08-ReachabilityFireability-11 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
All properties solved without resorting to model-checking.

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

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="PolyORBLF-COL-S02J04T08"
export BK_EXAMINATION="ReachabilityFireability"
export BK_TOOL="gold2020"
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 gold2020"
echo " Input is PolyORBLF-COL-S02J04T08, examination is ReachabilityFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r170-oct2-162089287000044"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/PolyORBLF-COL-S02J04T08.tgz
mv PolyORBLF-COL-S02J04T08 execution
cd execution
if [ "ReachabilityFireability" = "ReachabilityDeadlock" ] || [ "ReachabilityFireability" = "UpperBounds" ] || [ "ReachabilityFireability" = "QuasiLiveness" ] || [ "ReachabilityFireability" = "StableMarking" ] || [ "ReachabilityFireability" = "Liveness" ] || [ "ReachabilityFireability" = "OneSafe" ] || [ "ReachabilityFireability" = "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 [ "ReachabilityFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "ReachabilityFireability" != "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 "ReachabilityFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property ReachabilityFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "ReachabilityFireability.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 '' ReachabilityFireability.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "ReachabilityFireability" = "ReachabilityDeadlock" ] || [ "ReachabilityFireability" = "QuasiLiveness" ] || [ "ReachabilityFireability" = "StableMarking" ] || [ "ReachabilityFireability" = "Liveness" ] || [ "ReachabilityFireability" = "OneSafe" ] ; then
echo "FORMULA_NAME ReachabilityFireability"
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 ;