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.r013-oct2-167813602100204.qcow2', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=4294967296 backing_file=/data/fkordon/mcc2023-input.qcow2 backing_fmt=qcow2 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
.............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
=====================================================================
Generated by BenchKit 2-5348
Executing tool tapaal
Input is AirplaneLD-COL-0200, examination is LTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r013-oct2-167813602100204
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 516K
-rw-r--r-- 1 mcc users 7.8K Feb 26 11:31 CTLCardinality.txt
-rw-r--r-- 1 mcc users 76K Feb 26 11:31 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.7K Feb 26 11:27 CTLFireability.txt
-rw-r--r-- 1 mcc users 52K Feb 26 11:27 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:40 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.5K Jan 29 11:40 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.9K Feb 25 15:30 LTLCardinality.txt
-rw-r--r-- 1 mcc users 24K Feb 25 15:30 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K Feb 25 15:30 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Feb 25 15:30 LTLFireability.xml
-rw-r--r-- 1 mcc users 14K Feb 26 11:46 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 122K Feb 26 11:46 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 7.9K Feb 26 11:40 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 65K Feb 26 11:40 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K Feb 25 15:30 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Feb 25 15:30 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 5 18:22 equiv_pt
-rw-r--r-- 1 mcc users 5 Mar 5 18:22 instance
-rw-r--r-- 1 mcc users 5 Mar 5 18:22 iscolored
-rw-r--r-- 1 mcc users 67K 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 AirplaneLD-COL-0200-LTLFireability-00
FORMULA_NAME AirplaneLD-COL-0200-LTLFireability-01
FORMULA_NAME AirplaneLD-COL-0200-LTLFireability-02
FORMULA_NAME AirplaneLD-COL-0200-LTLFireability-03
FORMULA_NAME AirplaneLD-COL-0200-LTLFireability-04
FORMULA_NAME AirplaneLD-COL-0200-LTLFireability-05
FORMULA_NAME AirplaneLD-COL-0200-LTLFireability-06
FORMULA_NAME AirplaneLD-COL-0200-LTLFireability-07
FORMULA_NAME AirplaneLD-COL-0200-LTLFireability-08
FORMULA_NAME AirplaneLD-COL-0200-LTLFireability-09
FORMULA_NAME AirplaneLD-COL-0200-LTLFireability-10
FORMULA_NAME AirplaneLD-COL-0200-LTLFireability-11
FORMULA_NAME AirplaneLD-COL-0200-LTLFireability-12
FORMULA_NAME AirplaneLD-COL-0200-LTLFireability-13
FORMULA_NAME AirplaneLD-COL-0200-LTLFireability-14
FORMULA_NAME AirplaneLD-COL-0200-LTLFireability-15

=== Now, execution of the tool begins

BK_START 1678776268356

tapaal
Got BK_BIN_PATH=/home/mcc/BenchKit/bin/
---> tapaal --- TAPAAL
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.VKlOJkPxi3
MF=/home/mcc/BenchKit/bin/tmp/tmp.eowXn1OMxB
Time left: 3590
---------------------------------------------------
Step -1: Stripping Colors
---------------------------------------------------
Verifying stripped models (16 in total)

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.VKlOJkPxi3 --write-reduced /home/mcc/BenchKit/bin/tmp/tmp.eowXn1OMxB -x 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 ./model.pnml ./LTLFireability.xml
FORMULA AirplaneLD-COL-0200-LTLFireability-09 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT LP_APPROX UNFOLDING_TO_PT
Query index 9 was solved

Query is NOT satisfied.

FORMULA AirplaneLD-COL-0200-LTLFireability-13 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT LP_APPROX UNFOLDING_TO_PT
Query index 13 was solved

Query is NOT satisfied.

FORMULA AirplaneLD-COL-0200-LTLFireability-14 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT LP_APPROX UNFOLDING_TO_PT
Query index 14 was solved

Query is satisfied.
Solution found by parallel simplification (step 0)
Solution found by parallel simplification (step 0)
Solution found by parallel simplification (step 0)
Time left: 3590

---------------------------------------------------
Step 1: Parallel processing
---------------------------------------------------
Doing parallel verification of individual queries (13 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 0.001156 on verification
@@@0.00,6136@@@
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.eowXn1OMxB /home/mcc/BenchKit/bin/tmp/tmp.VKlOJkPxi3 --binary-query-io 1 -x 1 -n
Query index 0 was solved

Query is NOT satisfied.

Spent 0.002844 on verification
@@@0.00,6132@@@
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.eowXn1OMxB /home/mcc/BenchKit/bin/tmp/tmp.VKlOJkPxi3 --binary-query-io 1 -x 1 -n
FORMULA AirplaneLD-COL-0200-LTLFireability-01 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION
Query index 0 was solved

Query is NOT satisfied.

Spent 0.001709 on verification
@@@0.00,6084@@@
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.eowXn1OMxB /home/mcc/BenchKit/bin/tmp/tmp.VKlOJkPxi3 --binary-query-io 1 -x 1 -n

FORMULA AirplaneLD-COL-0200-LTLFireability-01 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 3589
------------------- QUERY 2 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.012208 on verification
@@@0.01,20060@@@
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.eowXn1OMxB /home/mcc/BenchKit/bin/tmp/tmp.VKlOJkPxi3 --binary-query-io 1 -x 2 -n

FORMULA AirplaneLD-COL-0200-LTLFireability-15 FALSE TECHNIQUES EXPLICIT NDFS WEAK_SKIP HEURISTIC AUTOMATON_HEUR OPTIM-1
Time left: 3589
------------------- QUERY 3 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is satisfied.
Spent 0.061828 on verification
@@@0.06,148000@@@
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.eowXn1OMxB /home/mcc/BenchKit/bin/tmp/tmp.VKlOJkPxi3 --binary-query-io 1 -x 3 -n

FORMULA AirplaneLD-COL-0200-LTLFireability-05 TRUE TECHNIQUES EXPLICIT TARJAN WEAK_SKIP STUBBORN AUT_STUB HEURISTIC DIST_HEUR OPTIM-1
Time left: 3589
------------------- QUERY 4 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is satisfied.
Spent 0.022789 on verification
@@@0.02,20072@@@
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.eowXn1OMxB /home/mcc/BenchKit/bin/tmp/tmp.VKlOJkPxi3 --binary-query-io 1 -x 4 -n

FORMULA AirplaneLD-COL-0200-LTLFireability-02 TRUE TECHNIQUES EXPLICIT NDFS WEAK_SKIP HEURISTIC AUTOMATON_HEUR OPTIM-1
Time left: 3588
------------------- QUERY 5 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.026609 on verification
@@@0.03,20168@@@
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.eowXn1OMxB /home/mcc/BenchKit/bin/tmp/tmp.VKlOJkPxi3 --binary-query-io 1 -x 5 -n

FORMULA AirplaneLD-COL-0200-LTLFireability-00 FALSE TECHNIQUES EXPLICIT NDFS WEAK_SKIP HEURISTIC AUTOMATON_HEUR OPTIM-1
Time left: 3588
------------------- QUERY 6 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.01435 on verification
@@@0.03,19948@@@
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.eowXn1OMxB /home/mcc/BenchKit/bin/tmp/tmp.VKlOJkPxi3 --binary-query-io 1 -x 6 -n

FORMULA AirplaneLD-COL-0200-LTLFireability-10 FALSE TECHNIQUES EXPLICIT NDFS WEAK_SKIP HEURISTIC AUTOMATON_HEUR OPTIM-1
Time left: 3588
------------------- QUERY 7 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is satisfied.
Spent 0.033431 on verification
@@@0.03,20356@@@
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.eowXn1OMxB /home/mcc/BenchKit/bin/tmp/tmp.VKlOJkPxi3 --binary-query-io 1 -x 7 -n

FORMULA AirplaneLD-COL-0200-LTLFireability-11 TRUE TECHNIQUES EXPLICIT NDFS WEAK_SKIP HEURISTIC AUTOMATON_HEUR OPTIM-1
Time left: 3587
------------------- QUERY 8 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.068778 on verification
FORMULA AirplaneLD-COL-0200-LTLFireability-04 FALSE TECHNIQUES EXPLICIT TARJAN WEAK_SKIP STUBBORN AUT_STUB HEURISTIC LOGFIRECOUNT_HEUR(5000) OPTIM-1

Query index 0 was solved
Query is NOT satisfied.
Spent 0.06233 on verification
@@@0.07,148524@@@
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.eowXn1OMxB /home/mcc/BenchKit/bin/tmp/tmp.VKlOJkPxi3 --binary-query-io 1 -x 8 -n

FORMULA AirplaneLD-COL-0200-LTLFireability-04 FALSE TECHNIQUES EXPLICIT TARJAN WEAK_SKIP STUBBORN AUT_STUB HEURISTIC DIST_HEUR OPTIM-1
Time left: 3587
------------------- QUERY 9 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.01774 on verification
@@@0.03,20124@@@
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.eowXn1OMxB /home/mcc/BenchKit/bin/tmp/tmp.VKlOJkPxi3 --binary-query-io 1 -x 9 -n

FORMULA AirplaneLD-COL-0200-LTLFireability-03 FALSE TECHNIQUES EXPLICIT NDFS WEAK_SKIP HEURISTIC AUTOMATON_HEUR OPTIM-1
Time left: 3587
------------------- QUERY 10 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.010783 on verification
@@@0.02,20372@@@
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.eowXn1OMxB /home/mcc/BenchKit/bin/tmp/tmp.VKlOJkPxi3 --binary-query-io 1 -x 10 -n

FORMULA AirplaneLD-COL-0200-LTLFireability-12 FALSE TECHNIQUES EXPLICIT NDFS WEAK_SKIP HEURISTIC AUTOMATON_HEUR OPTIM-1
Time left: 3587
------------------- QUERY 11 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.065643 on verification
FORMULA AirplaneLD-COL-0200-LTLFireability-08 FALSE TECHNIQUES EXPLICIT NDFS WEAK_SKIP HEURISTIC AUTOMATON_HEUR OPTIM-1

Query index 0 was solved
Query is NOT satisfied.
Spent 0.027857 on verification
@@@0.04,21912@@@
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.eowXn1OMxB /home/mcc/BenchKit/bin/tmp/tmp.VKlOJkPxi3 --binary-query-io 1 -x 11 -n

FORMULA AirplaneLD-COL-0200-LTLFireability-08 FALSE TECHNIQUES EXPLICIT TARJAN WEAK_SKIP STUBBORN AUT_STUB HEURISTIC LOGFIRECOUNT_HEUR(5000) OPTIM-1
Time left: 3586
------------------- QUERY 12 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.025533 on verification
@@@0.03,20340@@@
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.eowXn1OMxB /home/mcc/BenchKit/bin/tmp/tmp.VKlOJkPxi3 --binary-query-io 1 -x 12 -n

FORMULA AirplaneLD-COL-0200-LTLFireability-06 FALSE TECHNIQUES EXPLICIT NDFS WEAK_SKIP HEURISTIC AUTOMATON_HEUR OPTIM-1
Time left: 3586
------------------- QUERY 13 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.024553 on verification
@@@0.02,20736@@@
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.eowXn1OMxB /home/mcc/BenchKit/bin/tmp/tmp.VKlOJkPxi3 --binary-query-io 1 -x 13 -n

FORMULA AirplaneLD-COL-0200-LTLFireability-07 FALSE TECHNIQUES EXPLICIT NDFS WEAK_SKIP HEURISTIC AUTOMATON_HEUR OPTIM-1
Time left: 3586
All queries are solved
Time left: 3586
terminated-with-cleanup

BK_STOP 1678776272864

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

ERROR: A query could not be translated from CTL* to CTL.

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="AirplaneLD-COL-0200"
export BK_EXAMINATION="LTLFireability"
export BK_TOOL="tapaal"
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 tapaal"
echo " Input is AirplaneLD-COL-0200, 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 r013-oct2-167813602100204"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/AirplaneLD-COL-0200.tgz
mv AirplaneLD-COL-0200 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 ;