Execution Chart

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

Trace from the execution

Formatting '/mnt/tpsp/fkordon/mcc2023-input.r062-tajo-167813710700064.qcow2', fmt=qcow2 size=4294967296 backing_file='/mnt/tpsp/fkordon/mcc2023-input.qcow2' encryption=off cluster_size=65536 lazy_refcounts=off
Waiting for the VM to be ready (probing ssh)
........................
=====================================================================
Generated by BenchKit 2-5348
Executing tool gold2022
Input is BridgeAndVehicles-COL-V50P20N50, examination is LTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r062-tajo-167813710700064
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 548K
-rw-r--r-- 1 mcc users 8.1K Feb 25 12:46 CTLCardinality.txt
-rw-r--r-- 1 mcc users 79K Feb 25 12:46 CTLCardinality.xml
-rw-r--r-- 1 mcc users 7.0K Feb 25 12:42 CTLFireability.txt
-rw-r--r-- 1 mcc users 56K Feb 25 12:42 CTLFireability.xml
-rw-r--r-- 1 mcc users 5 Mar 5 18:22 equiv_pt
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:40 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.4K Jan 29 11:40 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 10 Mar 5 18:22 instance
-rw-r--r-- 1 mcc users 5 Mar 5 18:22 iscolored
-rw-r--r-- 1 mcc users 4.1K Feb 25 15:36 LTLCardinality.txt
-rw-r--r-- 1 mcc users 25K Feb 25 15:36 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.8K Feb 25 15:36 LTLFireability.txt
-rw-r--r-- 1 mcc users 16K Feb 25 15:36 LTLFireability.xml
-rw-r--r-- 1 mcc users 44K Mar 5 18:22 model.pnml
-rw-r--r-- 1 mcc users 15K Feb 25 14:06 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 140K Feb 25 14:06 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 12K Feb 25 14:02 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 88K Feb 25 14:02 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.9K Feb 25 15:36 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.9K Feb 25 15:36 UpperBounds.xml

--------------------
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 BridgeAndVehicles-COL-V50P20N50-LTLFireability-00
FORMULA_NAME BridgeAndVehicles-COL-V50P20N50-LTLFireability-01
FORMULA_NAME BridgeAndVehicles-COL-V50P20N50-LTLFireability-02
FORMULA_NAME BridgeAndVehicles-COL-V50P20N50-LTLFireability-03
FORMULA_NAME BridgeAndVehicles-COL-V50P20N50-LTLFireability-04
FORMULA_NAME BridgeAndVehicles-COL-V50P20N50-LTLFireability-05
FORMULA_NAME BridgeAndVehicles-COL-V50P20N50-LTLFireability-06
FORMULA_NAME BridgeAndVehicles-COL-V50P20N50-LTLFireability-07
FORMULA_NAME BridgeAndVehicles-COL-V50P20N50-LTLFireability-08
FORMULA_NAME BridgeAndVehicles-COL-V50P20N50-LTLFireability-09
FORMULA_NAME BridgeAndVehicles-COL-V50P20N50-LTLFireability-10
FORMULA_NAME BridgeAndVehicles-COL-V50P20N50-LTLFireability-11
FORMULA_NAME BridgeAndVehicles-COL-V50P20N50-LTLFireability-12
FORMULA_NAME BridgeAndVehicles-COL-V50P20N50-LTLFireability-13
FORMULA_NAME BridgeAndVehicles-COL-V50P20N50-LTLFireability-14
FORMULA_NAME BridgeAndVehicles-COL-V50P20N50-LTLFireability-15

=== Now, execution of the tool begins

BK_START 1678873133766

gold2022
Got BK_BIN_PATH=/home/mcc/BenchKit/bin/
---> gold2022 --- TAPAAL v5
Setting MODEL_PATH=.
Setting VERIFYPN=/home/mcc/BenchKit/bin/verifypn
Got BK_TIME_CONFINEMENT=3600
Setting TEMPDIR=/home/mcc/BenchKit/bin/tmp
Got BK_MEMORY_CONFINEMENT=16384
Limiting to 16265216 kB
Total timeout: 3590
Time left: 3590

*************************************
* TAPAAL verifying LTLFireability *
*************************************
TEMPDIR=/home/mcc/BenchKit/bin/tmp
QF=/home/mcc/BenchKit/bin/tmp/tmp.BQzH4bRwYP
MF=/home/mcc/BenchKit/bin/tmp/tmp.zRD2JeRqnC
Time left: 3590
---------------------------------------------------
Step -1: Stripping Colors
---------------------------------------------------
Verifying stripped models (16 in total)
/home/mcc/BenchKit/bin/verifypn -n -c -q 718 -ltl -l 29 -d 299 -z 4 -x 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 ./model.pnml ./LTLFireability.xml
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping BridgeAndVehicles-COL-V50P20N50-LTLFireability-15
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping BridgeAndVehicles-COL-V50P20N50-LTLFireability-14
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping BridgeAndVehicles-COL-V50P20N50-LTLFireability-13
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping BridgeAndVehicles-COL-V50P20N50-LTLFireability-12
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping BridgeAndVehicles-COL-V50P20N50-LTLFireability-11
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping BridgeAndVehicles-COL-V50P20N50-LTLFireability-10
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping BridgeAndVehicles-COL-V50P20N50-LTLFireability-09
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping BridgeAndVehicles-COL-V50P20N50-LTLFireability-08
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping BridgeAndVehicles-COL-V50P20N50-LTLFireability-07
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping BridgeAndVehicles-COL-V50P20N50-LTLFireability-06
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping BridgeAndVehicles-COL-V50P20N50-LTLFireability-05
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping BridgeAndVehicles-COL-V50P20N50-LTLFireability-04
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping BridgeAndVehicles-COL-V50P20N50-LTLFireability-03
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping BridgeAndVehicles-COL-V50P20N50-LTLFireability-02
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping BridgeAndVehicles-COL-V50P20N50-LTLFireability-01
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping BridgeAndVehicles-COL-V50P20N50-LTLFireability-00
WARNING: Could not run CPN over-approximation on any queries, terminating.
Time left: 3590
---------------------------------------------------
Step 0: Parallel Simplification
---------------------------------------------------
Doing parallel simplification (16 in total)
Total simplification timout is 718 -- reduction timeout is 299
timeout 1017 /home/mcc/BenchKit/bin/verifypn -n -ltl -q 718 -l 29 -d 299 -z 4 -s OverApprox --binary-query-io 2 --write-simplified /home/mcc/BenchKit/bin/tmp/tmp.BQzH4bRwYP --write-reduced /home/mcc/BenchKit/bin/tmp/tmp.zRD2JeRqnC -x 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 ./model.pnml ./LTLFireability.xml
FORMULA BridgeAndVehicles-COL-V50P20N50-LTLFireability-08 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT LP_APPROX UNFOLDING_TO_PT
Query index 8 was solved

Query is satisfied.

FORMULA BridgeAndVehicles-COL-V50P20N50-LTLFireability-10 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT LP_APPROX UNFOLDING_TO_PT
Query index 10 was solved

Query is satisfied.
Solution found by parallel simplification (step 0)
Solution found by parallel simplification (step 0)
Time left: 3243

---------------------------------------------------
Step 1: Parallel processing
---------------------------------------------------
Doing parallel verification of individual queries (14 in total)
Each query is verified by 4 parallel strategies for 299 seconds
------------------- QUERY 1 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is NOT satisfied.

Spent 0.000558 on verification
@@@1.12,36792@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -ltl\ tarjan\ --ltl-heur\ aut\ -s\ DFS\ -p\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.zRD2JeRqnC /home/mcc/BenchKit/bin/tmp/tmp.BQzH4bRwYP --binary-query-io 1 -x 1 -n

FORMULA BridgeAndVehicles-COL-V50P20N50-LTLFireability-02 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION
Time left: 3242
------------------- QUERY 2 ----------------------
No solution found



Time left: 2940
------------------- QUERY 3 ----------------------
No solution found



Time left: 2639
------------------- QUERY 4 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.081763 on verification
@@@2.30,158812@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -ltl\ tarjan\ --ltl-heur\ fire-count\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.zRD2JeRqnC /home/mcc/BenchKit/bin/tmp/tmp.BQzH4bRwYP --binary-query-io 1 -x 4 -n

FORMULA BridgeAndVehicles-COL-V50P20N50-LTLFireability-12 FALSE TECHNIQUES EXPLICIT TARJAN WEAK_SKIP STUBBORN AUT_STUB HEURISTIC LOGFIRECOUNT_HEUR(5000) OPTIM-1
Time left: 2636
------------------- QUERY 5 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.008227 on verification
@@@2.25,36028@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -ltl\ ndfs\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.zRD2JeRqnC /home/mcc/BenchKit/bin/tmp/tmp.BQzH4bRwYP --binary-query-io 1 -x 5 -n

FORMULA BridgeAndVehicles-COL-V50P20N50-LTLFireability-15 FALSE TECHNIQUES EXPLICIT NDFS WEAK_SKIP HEURISTIC AUTOMATON_HEUR OPTIM-1
Time left: 2633
------------------- QUERY 6 ----------------------
No solution found



Time left: 2332
------------------- QUERY 7 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is satisfied.
Spent 0.069945 on verification
@@@4.23,158880@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -ltl\ tarjan\ --ltl-heur\ aut\ -s\ DFS\ -p\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.zRD2JeRqnC /home/mcc/BenchKit/bin/tmp/tmp.BQzH4bRwYP --binary-query-io 1 -x 7 -n

FORMULA BridgeAndVehicles-COL-V50P20N50-LTLFireability-11 TRUE TECHNIQUES EXPLICIT TARJAN WEAK_SKIP OPTIM-1
Time left: 2328
------------------- QUERY 8 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.070534 on verification
@@@4.01,158820@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -ltl\ tarjan\ --ltl-heur\ dist\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.zRD2JeRqnC /home/mcc/BenchKit/bin/tmp/tmp.BQzH4bRwYP --binary-query-io 1 -x 8 -n

FORMULA BridgeAndVehicles-COL-V50P20N50-LTLFireability-13 FALSE TECHNIQUES EXPLICIT TARJAN WEAK_SKIP STUBBORN AUT_STUB HEURISTIC DIST_HEUR OPTIM-1
Time left: 2323
------------------- QUERY 9 ----------------------
No solution found



Time left: 2022
------------------- QUERY 10 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.006447 on verification
@@@4.04,35388@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -ltl\ ndfs\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.zRD2JeRqnC /home/mcc/BenchKit/bin/tmp/tmp.BQzH4bRwYP --binary-query-io 1 -x 10 -n

FORMULA BridgeAndVehicles-COL-V50P20N50-LTLFireability-14 FALSE TECHNIQUES EXPLICIT NDFS WEAK_SKIP HEURISTIC AUTOMATON_HEUR OPTIM-1
Time left: 2017
------------------- QUERY 11 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is satisfied.
Spent 0.06947 on verification
@@@4.01,159764@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -ltl\ tarjan\ --ltl-heur\ fire-count\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.zRD2JeRqnC /home/mcc/BenchKit/bin/tmp/tmp.BQzH4bRwYP --binary-query-io 1 -x 11 -n

FORMULA BridgeAndVehicles-COL-V50P20N50-LTLFireability-06 TRUE TECHNIQUES EXPLICIT TARJAN WEAK_SKIP STUBBORN AUT_STUB HEURISTIC LOGFIRECOUNT_HEUR(5000) OPTIM-1
Time left: 2013
------------------- QUERY 12 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.09602 on verification
@@@3.86,159688@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -ltl\ tarjan\ --ltl-heur\ dist\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.zRD2JeRqnC /home/mcc/BenchKit/bin/tmp/tmp.BQzH4bRwYP --binary-query-io 1 -x 12 -n

FORMULA BridgeAndVehicles-COL-V50P20N50-LTLFireability-00 FALSE TECHNIQUES EXPLICIT TARJAN WEAK_SKIP STUBBORN AUT_STUB HEURISTIC DIST_HEUR OPTIM-1
Time left: 2009
------------------- QUERY 13 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is satisfied.
Spent 0.073061 on verification
@@@4.15,159744@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -ltl\ tarjan\ --ltl-heur\ dist\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.zRD2JeRqnC /home/mcc/BenchKit/bin/tmp/tmp.BQzH4bRwYP --binary-query-io 1 -x 13 -n

FORMULA BridgeAndVehicles-COL-V50P20N50-LTLFireability-01 TRUE TECHNIQUES EXPLICIT TARJAN WEAK_SKIP STUBBORN AUT_STUB HEURISTIC DIST_HEUR OPTIM-1
Time left: 2005
------------------- QUERY 14 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.01526 on verification
@@@4.16,35924@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -ltl\ ndfs\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.zRD2JeRqnC /home/mcc/BenchKit/bin/tmp/tmp.BQzH4bRwYP --binary-query-io 1 -x 14 -n

FORMULA BridgeAndVehicles-COL-V50P20N50-LTLFireability-09 FALSE TECHNIQUES EXPLICIT NDFS WEAK_SKIP HEURISTIC AUTOMATON_HEUR OPTIM-1
Time left: 2001
---------------------------------------------------
Step 2: Sequential processing
---------------------------------------------------
Remaining 4 queries are verified sequentially.
Each query is verified for a dynamic timeout (at least 598 seconds)
Time left: 2001
------------------- QUERY 2 ----------------------
Running query 2 for 598 seconds. Remaining: 4 queries and 2001 seconds
No solution found



Time left: 1400
------------------- QUERY 3 ----------------------
Running query 3 for 598 seconds. Remaining: 3 queries and 1400 seconds
No solution found



Time left: 800
------------------- QUERY 6 ----------------------
Running query 6 for 598 seconds. Remaining: 2 queries and 800 seconds
No solution found



Time left: 199
------------------- QUERY 9 ----------------------
Time left: 199
---------------------------------------------------
Step 4: Random Parallel processing
---------------------------------------------------
Doing random parallel verification of individual queries (4 in total)
Each query is verified by 4 parallel strategies for 49 seconds
------------------- QUERY 2 ----------------------
No solution found



Time left: 148
------------------- QUERY 3 ----------------------
No solution found



Time left: 96
------------------- QUERY 6 ----------------------
No solution found



Time left: 44
------------------- QUERY 9 ----------------------
No solution found



Time left: -2
Out of time, terminating!
terminated-with-cleanup

BK_STOP 1678876725823

--------------------
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="BridgeAndVehicles-COL-V50P20N50"
export BK_EXAMINATION="LTLFireability"
export BK_TOOL="gold2022"
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 gold2022"
echo " Input is BridgeAndVehicles-COL-V50P20N50, examination is LTLFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r062-tajo-167813710700064"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/BridgeAndVehicles-COL-V50P20N50.tgz
mv BridgeAndVehicles-COL-V50P20N50 execution
cd execution
if [ "LTLFireability" = "ReachabilityDeadlock" ] || [ "LTLFireability" = "UpperBounds" ] || [ "LTLFireability" = "QuasiLiveness" ] || [ "LTLFireability" = "StableMarking" ] || [ "LTLFireability" = "Liveness" ] || [ "LTLFireability" = "OneSafe" ] || [ "LTLFireability" = "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 [ "LTLFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "LTLFireability" != "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 "LTLFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property LTLFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "LTLFireability.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 '' LTLFireability.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "LTLFireability" = "ReachabilityDeadlock" ] || [ "LTLFireability" = "QuasiLiveness" ] || [ "LTLFireability" = "StableMarking" ] || [ "LTLFireability" = "Liveness" ] || [ "LTLFireability" = "OneSafe" ] ; then
echo "FORMULA_NAME LTLFireability"
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 ;