Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2023-input.r167-tall-167838852900353.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2023-input.qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
....................................................................
=====================================================================
Generated by BenchKit 2-5348
Executing tool lolaxred
Input is FamilyReunion-COL-L01200M0120C060P060G030, examination is CTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r167-tall-167838852900353
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 612K
-rw-r--r-- 1 mcc users 7.3K Feb 26 11:55 CTLCardinality.txt
-rw-r--r-- 1 mcc users 79K Feb 26 11:55 CTLCardinality.xml
-rw-r--r-- 1 mcc users 7.6K Feb 26 11:55 CTLFireability.txt
-rw-r--r-- 1 mcc users 54K Feb 26 11:55 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:40 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 7.0K Jan 29 11:40 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.6K Feb 25 16:06 LTLCardinality.txt
-rw-r--r-- 1 mcc users 24K Feb 25 16:06 LTLCardinality.xml
-rw-r--r-- 1 mcc users 3.3K Feb 25 16:06 LTLFireability.txt
-rw-r--r-- 1 mcc users 19K Feb 25 16:06 LTLFireability.xml
-rw-r--r-- 1 mcc users 7.8K Feb 26 11:55 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 71K Feb 26 11:55 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 11K Feb 26 11:55 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 68K Feb 26 11:55 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 2.0K Feb 25 16:06 UpperBounds.txt
-rw-r--r-- 1 mcc users 4.0K Feb 25 16:06 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 5 18:22 equiv_pt
-rw-r--r-- 1 mcc users 24 Mar 5 18:22 instance
-rw-r--r-- 1 mcc users 5 Mar 5 18:22 iscolored
-rw-r--r-- 1 mcc users 211K Mar 5 18:22 model.pnml

--------------------
content from stdout:

=== Data for post analysis generated by BenchKit (invocation template)

The expected result is a vector of booleans
BOOL_VECTOR

here is the order used to build the result vector(from text file)
FORMULA_NAME FamilyReunion-COL-L01200M0120C060P060G030-CTLCardinality-00
FORMULA_NAME FamilyReunion-COL-L01200M0120C060P060G030-CTLCardinality-01
FORMULA_NAME FamilyReunion-COL-L01200M0120C060P060G030-CTLCardinality-02
FORMULA_NAME FamilyReunion-COL-L01200M0120C060P060G030-CTLCardinality-03
FORMULA_NAME FamilyReunion-COL-L01200M0120C060P060G030-CTLCardinality-04
FORMULA_NAME FamilyReunion-COL-L01200M0120C060P060G030-CTLCardinality-05
FORMULA_NAME FamilyReunion-COL-L01200M0120C060P060G030-CTLCardinality-06
FORMULA_NAME FamilyReunion-COL-L01200M0120C060P060G030-CTLCardinality-07
FORMULA_NAME FamilyReunion-COL-L01200M0120C060P060G030-CTLCardinality-08
FORMULA_NAME FamilyReunion-COL-L01200M0120C060P060G030-CTLCardinality-09
FORMULA_NAME FamilyReunion-COL-L01200M0120C060P060G030-CTLCardinality-10
FORMULA_NAME FamilyReunion-COL-L01200M0120C060P060G030-CTLCardinality-11
FORMULA_NAME FamilyReunion-COL-L01200M0120C060P060G030-CTLCardinality-12
FORMULA_NAME FamilyReunion-COL-L01200M0120C060P060G030-CTLCardinality-13
FORMULA_NAME FamilyReunion-COL-L01200M0120C060P060G030-CTLCardinality-14
FORMULA_NAME FamilyReunion-COL-L01200M0120C060P060G030-CTLCardinality-15

=== Now, execution of the tool begins

BK_START 1678462116938

bash -c /home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n "BK_STOP " ; date -u +%s%3N
Invoking MCC driver with
BK_TOOL=lolaxred
BK_EXAMINATION=CTLCardinality
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=FamilyReunion-COL-L01200M0120C060P060G030
Applying reductions before tool lola
Invoking reducer
Running Version 202303021504
[2023-03-10 15:28:38] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, CTLCardinality, -timeout, 360, -rebuildPNML]
[2023-03-10 15:28:38] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-10 15:28:38] [INFO ] Detected file is not PT type :http://www.pnml.org/version-2009/grammar/symmetricnet
log4j:WARN No appenders could be found for logger (org.apache.axiom.locator.DefaultOMMetaFactoryLocator).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
[2023-03-10 15:28:38] [WARNING] Using fallBack plugin, rng conformance not checked
[2023-03-10 15:28:39] [INFO ] Load time of PNML (colored model parsed with PNMLFW) : 740 ms
[2023-03-10 15:28:39] [INFO ] Detected 5 constant HL places corresponding to 306 PT places.
[2023-03-10 15:28:39] [INFO ] Imported 104 HL places and 66 HL transitions for a total of 4614109 PT places and 4406530.0 transition bindings in 240 ms.
Parsed 16 properties from file /home/mcc/execution/CTLCardinality.xml in 17 ms.
[2023-03-10 15:28:39] [INFO ] Built PT skeleton of HLPN with 104 places and 66 transitions 198 arcs in 8 ms.
[2023-03-10 15:28:39] [INFO ] Skeletonized 16 HLPN properties in 3 ms.
Initial state reduction rules removed 3 formulas.
FORMULA FamilyReunion-COL-L01200M0120C060P060G030-CTLCardinality-06 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FamilyReunion-COL-L01200M0120C060P060G030-CTLCardinality-13 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FamilyReunion-COL-L01200M0120C060P060G030-CTLCardinality-15 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Computed a total of 104 stabilizing places and 66 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 104 transition count 66
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
AF dead knowledge conclusive for 1 formulas.
Remains 13 properties that can be checked using skeleton over-approximation.
Reduce places removed 5 places and 0 transitions.
Computed a total of 99 stabilizing places and 66 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 99 transition count 66
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Incomplete random walk after 10820 steps, including 2 resets, run finished after 17 ms. (steps per millisecond=636 ) properties (out of 62) seen :6
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 18 ms. (steps per millisecond=55 ) properties (out of 56) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 15 ms. (steps per millisecond=66 ) properties (out of 56) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 11 ms. (steps per millisecond=91 ) properties (out of 56) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 56) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 56) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 56) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 35 ms. (steps per millisecond=28 ) properties (out of 56) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 12 ms. (steps per millisecond=83 ) properties (out of 56) seen :1
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 14 ms. (steps per millisecond=71 ) properties (out of 55) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 12 ms. (steps per millisecond=83 ) properties (out of 55) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 18 ms. (steps per millisecond=55 ) properties (out of 55) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 12 ms. (steps per millisecond=83 ) properties (out of 55) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 55) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 13 ms. (steps per millisecond=76 ) properties (out of 55) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 15 ms. (steps per millisecond=66 ) properties (out of 55) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 55) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 55) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 55) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 55) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 55) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 8 ms. (steps per millisecond=125 ) properties (out of 55) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 55) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 8 ms. (steps per millisecond=125 ) properties (out of 55) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 55) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 55) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 55) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 55) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 55) seen :2
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 15 ms. (steps per millisecond=66 ) properties (out of 53) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 14 ms. (steps per millisecond=71 ) properties (out of 53) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 53) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 53) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 53) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 53) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 53) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 53) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 53) seen :14
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 12 ms. (steps per millisecond=83 ) properties (out of 39) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 39) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 39) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 39) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 39) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 39) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 39) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 39) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 39) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 39) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 12 ms. (steps per millisecond=83 ) properties (out of 39) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 20 ms. (steps per millisecond=50 ) properties (out of 39) seen :0
Running SMT prover for 39 properties.
// Phase 1: matrix 66 rows 99 cols
[2023-03-10 15:28:40] [INFO ] Computed 33 place invariants in 8 ms
[2023-03-10 15:28:40] [INFO ] [Real]Absence check using 4 positive place invariants in 2 ms returned sat
[2023-03-10 15:28:40] [INFO ] [Real]Absence check using 4 positive and 29 generalized place invariants in 9 ms returned sat
[2023-03-10 15:28:40] [INFO ] After 31ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1 real:38
[2023-03-10 15:28:40] [INFO ] After 41ms SMT Verify possible using trap constraints in real domain returned unsat :0 sat :1 real:38
Attempting to minimize the solution found.
Minimization took 122 ms.
[2023-03-10 15:28:40] [INFO ] After 428ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :1 real:38
[2023-03-10 15:28:40] [INFO ] [Nat]Absence check using 4 positive place invariants in 4 ms returned sat
[2023-03-10 15:28:40] [INFO ] [Nat]Absence check using 4 positive and 29 generalized place invariants in 8 ms returned sat
[2023-03-10 15:28:40] [INFO ] After 164ms SMT Verify possible using state equation in natural domain returned unsat :5 sat :34
[2023-03-10 15:28:41] [INFO ] After 418ms SMT Verify possible using trap constraints in natural domain returned unsat :5 sat :34
Attempting to minimize the solution found.
Minimization took 132 ms.
[2023-03-10 15:28:41] [INFO ] After 768ms SMT Verify possible using all constraints in natural domain returned unsat :5 sat :34
Fused 39 Parikh solutions to 34 different solutions.
Finished Parikh walk after 1297 steps, including 0 resets, run visited all 1 properties in 4 ms. (steps per millisecond=324 )
Parikh walk visited 34 properties in 7310 ms.
Successfully simplified 5 atomic propositions for a total of 13 simplifications.
[2023-03-10 15:28:48] [INFO ] Initial state reduction rules for CTL removed 1 formulas.
[2023-03-10 15:28:48] [INFO ] Flatten gal took : 28 ms
FORMULA FamilyReunion-COL-L01200M0120C060P060G030-CTLCardinality-00 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2023-03-10 15:28:48] [INFO ] Flatten gal took : 9 ms
Transition Gate2ANDJoin forces synchronizations/join behavior on parameter l of sort LegalResident
Transition ReceiveLangChoice forces synchronizations/join behavior on parameter m of sort MICSystem
Symmetric sort wr.t. initial and guards and successors and join/free detected :CINFORMI
Symmetric sort wr.t. initial detected :CINFORMI
Symmetric sort wr.t. initial and guards detected :CINFORMI
Applying symmetric unfolding of full symmetric sort :CINFORMI domain size was 61
Transition Gate1ANDJoin forces synchronizations/join behavior on parameter p of sort PublicAdminOffice
Symmetric sort wr.t. initial and guards and successors and join/free detected :GovernmentCommission
Symmetric sort wr.t. initial detected :GovernmentCommission
Symmetric sort wr.t. initial and guards detected :GovernmentCommission
Applying symmetric unfolding of full symmetric sort :GovernmentCommission domain size was 31
Symmetric sort wr.t. initial and guards and successors and join/free detected :Response
Symmetric sort wr.t. initial detected :Response
Transition SendClearanceToRel : guard parameter $r(Response:2) in guard (EQ $r 0)introduces in Response(2) partition with 2 elements
[2023-03-10 15:28:57] [INFO ] Unfolded HLPN to a Petri net with 4073269 places and 3540609 transitions 10178597 arcs in 8455 ms.
[2023-03-10 15:28:57] [INFO ] Unfolded 12 HLPN properties in 222 ms.
Deduced a syphon composed of 1201 places in 11467 ms
Reduce places removed 1387 places and 0 transitions.
Support contains 2302564 out of 4071882 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 4071882/4071882 places, 3540609/3540609 transitions.
Reduce places removed 1324 places and 0 transitions.
TIME LIMIT: Killed by timeout after 3600 seconds
MemTotal: 16393232 kB
MemFree: 1400300 kB
After kill :
MemTotal: 16393232 kB
MemFree: 16108940 kB

BK_TIME_CONFINEMENT_REACHED

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

+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
+ export PYTHONPATH=/home/mcc/BenchKit/itstools/pylibs
+ PYTHONPATH=/home/mcc/BenchKit/itstools/pylibs
+ export LD_LIBRARY_PATH=/home/mcc/BenchKit/itstools/pylibs:
+ LD_LIBRARY_PATH=/home/mcc/BenchKit/itstools/pylibs:
++ sed s/.jar//
++ ls /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202303021504.jar
++ perl -pe 's/.*\.//g'
+ VERSION=202303021504
+ echo 'Running Version 202303021504'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination CTLCardinality -timeout 360 -rebuildPNML

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="FamilyReunion-COL-L01200M0120C060P060G030"
export BK_EXAMINATION="CTLCardinality"
export BK_TOOL="lolaxred"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"
export BK_BIN_PATH="/home/mcc/BenchKit/bin/"

# this is specific to your benchmark or test

export BIN_DIR="$HOME/BenchKit/bin"

# remove the execution directoty if it exists (to avoid increse of .vmdk images)
if [ -d execution ] ; then
rm -rf execution
fi

# this is for BenchKit: explicit launching of the test
echo "====================================================================="
echo " Generated by BenchKit 2-5348"
echo " Executing tool lolaxred"
echo " Input is FamilyReunion-COL-L01200M0120C060P060G030, examination is CTLCardinality"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r167-tall-167838852900353"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/FamilyReunion-COL-L01200M0120C060P060G030.tgz
mv FamilyReunion-COL-L01200M0120C060P060G030 execution
cd execution
if [ "CTLCardinality" = "ReachabilityDeadlock" ] || [ "CTLCardinality" = "UpperBounds" ] || [ "CTLCardinality" = "QuasiLiveness" ] || [ "CTLCardinality" = "StableMarking" ] || [ "CTLCardinality" = "Liveness" ] || [ "CTLCardinality" = "OneSafe" ] || [ "CTLCardinality" = "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 [ "CTLCardinality" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "CTLCardinality" != "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 "CTLCardinality.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property CTLCardinality.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "CTLCardinality.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 '' CTLCardinality.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "CTLCardinality" = "ReachabilityDeadlock" ] || [ "CTLCardinality" = "QuasiLiveness" ] || [ "CTLCardinality" = "StableMarking" ] || [ "CTLCardinality" = "Liveness" ] || [ "CTLCardinality" = "OneSafe" ] ; then
echo "FORMULA_NAME CTLCardinality"
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 ;