fond
Model Checking Contest 2021
11th edition, Paris, France, June 23, 2021
Execution of r170-oct2-162089287000040
Last Updated
Jun 28, 2021

About the Execution of 2020-gold for PolyORBLF-COL-S02J04T06

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
291.495 3600000.00 46806.00 154.40 TFTTFFTTTTTFTFTT 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-oct2-162089287000040.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-S02J04T06, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r170-oct2-162089287000040
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 536K
-rw-r--r-- 1 mcc users 17K May 5 16:58 CTLCardinality.txt
-rw-r--r-- 1 mcc users 108K 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 89K 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 4.1K Mar 28 16:26 LTLCardinality.txt
-rw-r--r-- 1 mcc users 26K Mar 28 16:26 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K Mar 28 16:26 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Mar 28 16:26 LTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Mar 27 09:19 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 18K Mar 27 09:19 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 2.9K Mar 25 11:52 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 16K Mar 25 11:52 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K 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-S02J04T06-ReachabilityFireability-00
FORMULA_NAME PolyORBLF-COL-S02J04T06-ReachabilityFireability-01
FORMULA_NAME PolyORBLF-COL-S02J04T06-ReachabilityFireability-02
FORMULA_NAME PolyORBLF-COL-S02J04T06-ReachabilityFireability-03
FORMULA_NAME PolyORBLF-COL-S02J04T06-ReachabilityFireability-04
FORMULA_NAME PolyORBLF-COL-S02J04T06-ReachabilityFireability-05
FORMULA_NAME PolyORBLF-COL-S02J04T06-ReachabilityFireability-06
FORMULA_NAME PolyORBLF-COL-S02J04T06-ReachabilityFireability-07
FORMULA_NAME PolyORBLF-COL-S02J04T06-ReachabilityFireability-08
FORMULA_NAME PolyORBLF-COL-S02J04T06-ReachabilityFireability-09
FORMULA_NAME PolyORBLF-COL-S02J04T06-ReachabilityFireability-10
FORMULA_NAME PolyORBLF-COL-S02J04T06-ReachabilityFireability-11
FORMULA_NAME PolyORBLF-COL-S02J04T06-ReachabilityFireability-12
FORMULA_NAME PolyORBLF-COL-S02J04T06-ReachabilityFireability-13
FORMULA_NAME PolyORBLF-COL-S02J04T06-ReachabilityFireability-14
FORMULA_NAME PolyORBLF-COL-S02J04T06-ReachabilityFireability-15

=== Now, execution of the tool begins

BK_START 1621374369244

bash -c /home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n "BK_STOP " ; date -u +%s%3N
[2021-05-18 21:46:12] [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 21:46:12] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2021-05-18 21:46:12] [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 21:46:13] [INFO ] Load time of PNML (colored model parsed with PNMLFW) : 934 ms
[2021-05-18 21:46:13] [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 21:46:13] [INFO ] ms2 symmetric to ms1 in transition T_1124
[2021-05-18 21:46:13] [INFO ] ms3 symmetric to ms2 in transition T_1125
[2021-05-18 21:46:13] [INFO ] ms2 symmetric to ms1 in transition T_1125
[2021-05-18 21:46:13] [INFO ] ms3 symmetric to ms4 in transition T_1126
[2021-05-18 21:46:13] [INFO ] ms4 symmetric to ms2 in transition T_1126
[2021-05-18 21:46:13] [INFO ] ms2 symmetric to ms1 in transition T_1126
[2021-05-18 21:46:13] [INFO ] Imported 81 HL places and 65 HL transitions for a total of 476 PT places and 952.0 transition bindings in 58 ms.
[2021-05-18 21:46:13] [INFO ] Computed order based on color domains.
[2021-05-18 21:46:13] [INFO ] Unfolded HLPN to a Petri net with 476 places and 824 transitions in 49 ms.
[2021-05-18 21:46:13] [INFO ] Unfolded HLPN properties in 1 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityFireability.xml in 80 ms.
Working with output stream class java.io.PrintStream
Incomplete random walk after 10000 steps, including 5 resets, run finished after 142 ms. (steps per millisecond=70 ) properties seen :[0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1]
FORMULA PolyORBLF-COL-S02J04T06-ReachabilityFireability-15 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-COL-S02J04T06-ReachabilityFireability-14 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-COL-S02J04T06-ReachabilityFireability-13 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-COL-S02J04T06-ReachabilityFireability-11 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-COL-S02J04T06-ReachabilityFireability-10 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-COL-S02J04T06-ReachabilityFireability-09 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-COL-S02J04T06-ReachabilityFireability-07 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-COL-S02J04T06-ReachabilityFireability-06 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-COL-S02J04T06-ReachabilityFireability-05 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-COL-S02J04T06-ReachabilityFireability-03 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-COL-S02J04T06-ReachabilityFireability-02 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-COL-S02J04T06-ReachabilityFireability-01 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
Incomplete Best-First random walk after 10001 steps, including 3 resets, run finished after 31 ms. (steps per millisecond=322 ) properties seen :[0, 0, 0, 0]
Incomplete Best-First random walk after 10000 steps, including 2 resets, run finished after 25 ms. (steps per millisecond=400 ) properties seen :[0, 0, 0, 0]
Incomplete Best-First random walk after 10000 steps, including 0 resets, run finished after 38 ms. (steps per millisecond=263 ) properties seen :[0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 30 ms. (steps per millisecond=333 ) properties seen :[0, 0, 0, 0]
[2021-05-18 21:46:13] [INFO ] Flow matrix only has 812 transitions (discarded 12 similar events)
// Phase 1: matrix 812 rows 476 cols
[2021-05-18 21:46:13] [INFO ] Computed 46 place invariants in 41 ms
[2021-05-18 21:46:14] [INFO ] [Real]Absence check using 12 positive place invariants in 112 ms returned sat
[2021-05-18 21:46:14] [INFO ] [Real]Absence check using 12 positive and 34 generalized place invariants in 89 ms returned unsat
[2021-05-18 21:46:14] [INFO ] [Real]Absence check using 12 positive place invariants in 22 ms returned sat
[2021-05-18 21:46:14] [INFO ] [Real]Absence check using 12 positive and 34 generalized place invariants in 39 ms returned sat
[2021-05-18 21:46:14] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-18 21:46:15] [INFO ] [Real]Absence check using state equation in 1592 ms returned sat
[2021-05-18 21:46:15] [INFO ] Solution in real domain found non-integer solution.
[2021-05-18 21:46:16] [INFO ] [Nat]Absence check using 12 positive place invariants in 85 ms returned sat
[2021-05-18 21:46:16] [INFO ] [Nat]Absence check using 12 positive and 34 generalized place invariants in 139 ms returned sat
[2021-05-18 21:46:16] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2021-05-18 21:46:17] [INFO ] [Nat]Absence check using state equation in 1582 ms returned sat
[2021-05-18 21:46:17] [INFO ] State equation strengthened by 78 read => feed constraints.
[2021-05-18 21:46:18] [INFO ] [Nat]Added 78 Read/Feed constraints in 281 ms returned sat
[2021-05-18 21:46:19] [INFO ] Deduced a trap composed of 261 places in 1090 ms
[2021-05-18 21:46:19] [INFO ] Deduced a trap composed of 228 places in 400 ms
[2021-05-18 21:46:21] [INFO ] Deduced a trap composed of 15 places in 1044 ms
[2021-05-18 21:46:21] [WARNING] SMT solver failed with error :java.lang.RuntimeException: SMT solver raised an error when submitting script. Raised (error "Failed to assert expression: java.io.IOException: Stream closed (> (+ s124 s228 s229 s230 s231 s232 s233 s234 s342 s343 s344 s345 s346 s347 s416) 0)") while checking expression at index 1
[2021-05-18 21:46:21] [INFO ] [Real]Absence check using 12 positive place invariants in 82 ms returned sat
[2021-05-18 21:46:21] [INFO ] [Real]Absence check using 12 positive and 34 generalized place invariants in 75 ms returned sat
[2021-05-18 21:46:21] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-18 21:46:24] [INFO ] [Real]Absence check using state equation in 3251 ms returned sat
[2021-05-18 21:46:24] [INFO ] Solution in real domain found non-integer solution.
[2021-05-18 21:46:24] [INFO ] [Nat]Absence check using 12 positive place invariants in 30 ms returned sat
[2021-05-18 21:46:24] [INFO ] [Nat]Absence check using 12 positive and 34 generalized place invariants in 71 ms returned sat
[2021-05-18 21:46:24] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2021-05-18 21:46:26] [INFO ] [Nat]Absence check using state equation in 1973 ms returned sat
[2021-05-18 21:46:27] [INFO ] [Nat]Added 78 Read/Feed constraints in 1001 ms returned sat
[2021-05-18 21:46:27] [INFO ] Deduced a trap composed of 66 places in 132 ms
[2021-05-18 21:46:29] [INFO ] SMT solver returned unknown. Retrying;
[2021-05-18 21:46:30] [INFO ] Deduced a trap composed of 3 places in 871 ms
[2021-05-18 21:46:30] [WARNING] SMT solver failed with error :java.lang.RuntimeException: SMT solver raised an error when submitting script. Raised (error "Failed to assert expression: java.io.IOException: Stream closed (> (+ s193 s194 s195) 0)") while checking expression at index 2
[2021-05-18 21:46:30] [INFO ] [Real]Absence check using 12 positive place invariants in 43 ms returned sat
[2021-05-18 21:46:30] [INFO ] [Real]Absence check using 12 positive and 34 generalized place invariants in 36 ms returned unsat
FORMULA PolyORBLF-COL-S02J04T06-ReachabilityFireability-12 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA PolyORBLF-COL-S02J04T06-ReachabilityFireability-00 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
Support contains 23 out of 476 places. Attempting structural reductions.
Starting structural reductions, iteration 0 : 476/476 places, 824/824 transitions.
Ensure Unique test removed 2 places
Performed 36 Post agglomeration using F-continuation condition.Transition count delta: 36
Iterating post reduction 0 with 38 rules applied. Total rules applied 38 place count 474 transition count 788
Reduce places removed 36 places and 0 transitions.
Iterating post reduction 1 with 36 rules applied. Total rules applied 74 place count 438 transition count 788
Performed 48 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 48 Pre rules applied. Total rules applied 74 place count 438 transition count 740
Deduced a syphon composed of 48 places in 4 ms
Reduce places removed 48 places and 0 transitions.
Iterating global reduction 2 with 96 rules applied. Total rules applied 170 place count 390 transition count 740
Performed 42 Post agglomeration using F-continuation condition.Transition count delta: 42
Deduced a syphon composed of 42 places in 1 ms
Reduce places removed 42 places and 0 transitions.
Iterating global reduction 2 with 84 rules applied. Total rules applied 254 place count 348 transition count 698
Free-agglomeration rule (complex) applied 6 times.
Iterating global reduction 2 with 6 rules applied. Total rules applied 260 place count 348 transition count 692
Reduce places removed 6 places and 0 transitions.
Iterating post reduction 2 with 6 rules applied. Total rules applied 266 place count 342 transition count 692
Partial Free-agglomeration rule applied 6 times.
Drop transitions removed 6 transitions
Iterating global reduction 3 with 6 rules applied. Total rules applied 272 place count 342 transition count 692
Applied a total of 272 rules in 238 ms. Remains 342 /476 variables (removed 134) and now considering 692/824 (removed 132) transitions.
[2021-05-18 21:46:30] [INFO ] Flow matrix only has 680 transitions (discarded 12 similar events)
// Phase 1: matrix 680 rows 342 cols
[2021-05-18 21:46:30] [INFO ] Computed 44 place invariants in 17 ms
[2021-05-18 21:46:35] [INFO ] Dead Transitions using invariants and state equation in 4959 ms returned [302, 303, 304, 305, 306, 307, 314, 315, 316, 317, 318, 319, 320, 321, 322, 323, 324, 325, 326, 327, 328, 329, 330, 331, 332, 333, 334, 335, 336, 337, 338, 339, 340, 341, 342, 343, 344, 345, 346, 347, 348, 349, 350, 351, 352, 353, 354, 355, 356, 357, 358, 359, 360, 361, 362, 363, 364, 365, 366, 367, 368, 369, 370, 371, 372, 373]
Found 66 dead transitions using SMT.
Drop transitions removed 66 transitions
Dead transitions reduction (with SMT) triggered by suspicious arc values removed 66 transitions :[373, 372, 371, 370, 369, 368, 367, 366, 365, 364, 363, 362, 361, 360, 359, 358, 357, 356, 355, 354, 353, 352, 351, 350, 349, 348, 347, 346, 345, 344, 343, 342, 341, 340, 339, 338, 337, 336, 335, 334, 333, 332, 331, 330, 329, 328, 327, 326, 325, 324, 323, 322, 321, 320, 319, 318, 317, 316, 315, 314, 307, 306, 305, 304, 303, 302]
Starting structural reductions, iteration 1 : 342/476 places, 626/824 transitions.
Reduce places removed 0 places and 12 transitions.
Deduced a syphon composed of 14 places in 1 ms
Reduce places removed 12 places and 12 transitions.
Iterating global reduction 0 with 12 rules applied. Total rules applied 12 place count 330 transition count 602
Deduced a syphon composed of 2 places in 1 ms
Applied a total of 12 rules in 24 ms. Remains 330 /342 variables (removed 12) and now considering 602/626 (removed 24) transitions.
Finished structural reductions, in 2 iterations. Remains : 330/476 places, 602/824 transitions.
Deduced a syphon composed of 2 places in 1 ms
Reduce places removed 2 places and 0 transitions.
FORMULA PolyORBLF-COL-S02J04T06-ReachabilityFireability-04 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA PolyORBLF-COL-S02J04T06-ReachabilityFireability-08 TRUE 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-S02J04T06"
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-S02J04T06, 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-oct2-162089287000040"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/PolyORBLF-COL-S02J04T06.tgz
mv PolyORBLF-COL-S02J04T06 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 ;