fond
Model Checking Contest 2024
14th edition, Geneva, Switzerland, June 25, 2024
Execution of r524-tall-171679079900221
Last Updated
July 7, 2024

About the Execution of LTSMin+red for RobotManipulation-PT-00500

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
501.271 5765.00 11886.00 96.90 1001 1000 1000 1000 1000 1000 1000 1000 1000 1000 1001 1000 1001 1000 1000 1000 normal

Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2024-input.r524-tall-171679079900221.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2024-input.qcow2 backing_fmt=qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
..................
=====================================================================
Generated by BenchKit 2-5568
Executing tool ltsminxred
Input is RobotManipulation-PT-00500, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r524-tall-171679079900221
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 428K
-rw-r--r-- 1 mcc users 6.1K May 14 13:22 CTLCardinality.txt
-rw-r--r-- 1 mcc users 57K May 14 13:22 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.2K May 14 13:22 CTLFireability.txt
-rw-r--r-- 1 mcc users 41K May 14 13:22 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 18 16:43 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 4.3K Apr 23 07:49 LTLCardinality.txt
-rw-r--r-- 1 mcc users 29K Apr 23 07:49 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.5K Apr 23 07:49 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Apr 23 07:49 LTLFireability.xml
-rw-r--r-- 1 mcc users 12K Apr 11 18:29 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 114K Apr 11 18:29 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 8.8K Apr 11 18:28 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 67K Apr 11 18:28 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K Apr 23 07:49 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Apr 23 07:49 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 18 16:43 equiv_col
-rw-r--r-- 1 mcc users 6 May 18 16:43 instance
-rw-r--r-- 1 mcc users 6 May 18 16:43 iscolored
-rw-r--r-- 1 mcc users 6.4K May 18 16:43 model.pnml

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

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

The expected result is a vector of positive values
NUM_VECTOR

here is the order used to build the result vector(from text file)
FORMULA_NAME RobotManipulation-PT-00500-UpperBounds-00
FORMULA_NAME RobotManipulation-PT-00500-UpperBounds-01
FORMULA_NAME RobotManipulation-PT-00500-UpperBounds-02
FORMULA_NAME RobotManipulation-PT-00500-UpperBounds-03
FORMULA_NAME RobotManipulation-PT-00500-UpperBounds-04
FORMULA_NAME RobotManipulation-PT-00500-UpperBounds-05
FORMULA_NAME RobotManipulation-PT-00500-UpperBounds-06
FORMULA_NAME RobotManipulation-PT-00500-UpperBounds-07
FORMULA_NAME RobotManipulation-PT-00500-UpperBounds-08
FORMULA_NAME RobotManipulation-PT-00500-UpperBounds-09
FORMULA_NAME RobotManipulation-PT-00500-UpperBounds-10
FORMULA_NAME RobotManipulation-PT-00500-UpperBounds-11
FORMULA_NAME RobotManipulation-PT-00500-UpperBounds-12
FORMULA_NAME RobotManipulation-PT-00500-UpperBounds-13
FORMULA_NAME RobotManipulation-PT-00500-UpperBounds-14
FORMULA_NAME RobotManipulation-PT-00500-UpperBounds-15

=== Now, execution of the tool begins

BK_START 1717221522113

Invoking MCC driver with
BK_TOOL=ltsminxred
BK_EXAMINATION=UpperBounds
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=RobotManipulation-PT-00500
BK_MEMORY_CONFINEMENT=16384
Applying reductions before tool ltsmin
Invoking reducer
Running Version 202405141337
[2024-06-01 05:58:43] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, UpperBounds, -timeout, 360, -rebuildPNML]
[2024-06-01 05:58:43] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2024-06-01 05:58:43] [INFO ] Load time of PNML (sax parser for PT used): 30 ms
[2024-06-01 05:58:43] [INFO ] Transformed 15 places.
[2024-06-01 05:58:43] [INFO ] Transformed 11 transitions.
[2024-06-01 05:58:43] [INFO ] Parsed PT model containing 15 places and 11 transitions and 34 arcs in 166 ms.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 8 ms.
Reduction of identical properties reduced properties to check from 16 to 9
Current structural bounds on expressions (Initially) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 1000, 1001] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 1000, 1001] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
// Phase 1: matrix 11 rows 15 cols
[2024-06-01 05:58:43] [INFO ] Computed 6 invariants in 3 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 1000, 1001] Max Struct:[1001, 1001, 1001, 1000, 2001, 1000, 1001, 1000, 1001]
FORMULA RobotManipulation-PT-00500-UpperBounds-12 1001 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA RobotManipulation-PT-00500-UpperBounds-10 1001 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA RobotManipulation-PT-00500-UpperBounds-13 1000 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA RobotManipulation-PT-00500-UpperBounds-15 1000 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA RobotManipulation-PT-00500-UpperBounds-09 1000 TECHNIQUES TOPOLOGICAL INITIAL_STATE
RANDOM walk for 10015 steps (2 resets) in 22 ms. (435 steps per ms)
FORMULA RobotManipulation-PT-00500-UpperBounds-14 1000 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA RobotManipulation-PT-00500-UpperBounds-03 1000 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA RobotManipulation-PT-00500-UpperBounds-00 1001 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 50005 steps (10 resets) in 81 ms. (609 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1, 62, 150, 42, 62] Max Struct:[1001, 1001, 2001, 1000, 1001]
[2024-06-01 05:58:43] [INFO ] Invariant cache hit.
[2024-06-01 05:58:43] [INFO ] [Real]Absence check using 3 positive place invariants in 5 ms returned sat
[2024-06-01 05:58:43] [INFO ] [Real]Absence check using 3 positive and 3 generalized place invariants in 10 ms returned sat
[2024-06-01 05:58:43] [INFO ] [Real]Absence check using state equation in 60 ms returned sat
[2024-06-01 05:58:43] [INFO ] Computed and/alt/rep : 10/18/10 causal constraints (skipped 0 transitions) in 10 ms.
[2024-06-01 05:58:44] [INFO ] Solution in real domain found non-integer solution.
[2024-06-01 05:58:44] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2024-06-01 05:58:44] [INFO ] [Nat]Absence check using 3 positive and 3 generalized place invariants in 1 ms returned sat
[2024-06-01 05:58:44] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2024-06-01 05:58:44] [INFO ] Computed and/alt/rep : 10/18/10 causal constraints (skipped 0 transitions) in 2 ms.
[2024-06-01 05:58:44] [INFO ] Added : 8 causal constraints over 2 iterations in 53 ms. Result :sat
Minimization took 71 ms.
[2024-06-01 05:58:44] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2024-06-01 05:58:44] [INFO ] [Real]Absence check using 3 positive and 3 generalized place invariants in 11 ms returned sat
[2024-06-01 05:58:44] [INFO ] [Real]Absence check using state equation in 13 ms returned sat
[2024-06-01 05:58:44] [INFO ] Computed and/alt/rep : 10/18/10 causal constraints (skipped 0 transitions) in 2 ms.
[2024-06-01 05:58:44] [INFO ] Solution in real domain found non-integer solution.
[2024-06-01 05:58:44] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2024-06-01 05:58:44] [INFO ] [Nat]Absence check using 3 positive and 3 generalized place invariants in 1 ms returned sat
[2024-06-01 05:58:44] [INFO ] [Nat]Absence check using state equation in 16 ms returned sat
[2024-06-01 05:58:44] [INFO ] Computed and/alt/rep : 10/18/10 causal constraints (skipped 0 transitions) in 2 ms.
[2024-06-01 05:58:44] [INFO ] Added : 8 causal constraints over 2 iterations in 53 ms. Result :sat
Minimization took 19 ms.
[2024-06-01 05:58:44] [INFO ] [Real]Absence check using 3 positive place invariants in 0 ms returned sat
[2024-06-01 05:58:44] [INFO ] [Real]Absence check using 3 positive and 3 generalized place invariants in 48 ms returned sat
[2024-06-01 05:58:44] [INFO ] [Real]Absence check using state equation in 85 ms returned sat
[2024-06-01 05:58:44] [INFO ] Computed and/alt/rep : 10/18/10 causal constraints (skipped 0 transitions) in 3 ms.
[2024-06-01 05:58:44] [INFO ] Solution in real domain found non-integer solution.
[2024-06-01 05:58:44] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2024-06-01 05:58:44] [INFO ] [Nat]Absence check using 3 positive and 3 generalized place invariants in 1 ms returned sat
[2024-06-01 05:58:44] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2024-06-01 05:58:44] [INFO ] Computed and/alt/rep : 10/18/10 causal constraints (skipped 0 transitions) in 5 ms.
[2024-06-01 05:58:44] [INFO ] Added : 9 causal constraints over 2 iterations in 16 ms. Result :sat
Minimization took 5 ms.
[2024-06-01 05:58:44] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2024-06-01 05:58:44] [INFO ] [Real]Absence check using 3 positive and 3 generalized place invariants in 1 ms returned sat
[2024-06-01 05:58:44] [INFO ] [Real]Absence check using state equation in 11 ms returned sat
[2024-06-01 05:58:44] [INFO ] Computed and/alt/rep : 10/18/10 causal constraints (skipped 0 transitions) in 3 ms.
[2024-06-01 05:58:44] [INFO ] Solution in real domain found non-integer solution.
[2024-06-01 05:58:44] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2024-06-01 05:58:44] [INFO ] [Nat]Absence check using 3 positive and 3 generalized place invariants in 4 ms returned sat
[2024-06-01 05:58:44] [INFO ] [Nat]Absence check using state equation in 5 ms returned sat
[2024-06-01 05:58:44] [INFO ] Computed and/alt/rep : 10/18/10 causal constraints (skipped 0 transitions) in 4 ms.
[2024-06-01 05:58:44] [INFO ] Added : 8 causal constraints over 2 iterations in 58 ms. Result :sat
Minimization took 3 ms.
[2024-06-01 05:58:44] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2024-06-01 05:58:44] [INFO ] [Real]Absence check using 3 positive and 3 generalized place invariants in 2 ms returned sat
[2024-06-01 05:58:44] [INFO ] [Real]Absence check using state equation in 4 ms returned sat
[2024-06-01 05:58:44] [INFO ] Computed and/alt/rep : 10/18/10 causal constraints (skipped 0 transitions) in 1 ms.
[2024-06-01 05:58:44] [INFO ] Solution in real domain found non-integer solution.
[2024-06-01 05:58:44] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2024-06-01 05:58:44] [INFO ] [Nat]Absence check using 3 positive and 3 generalized place invariants in 0 ms returned sat
[2024-06-01 05:58:44] [INFO ] [Nat]Absence check using state equation in 4 ms returned sat
[2024-06-01 05:58:44] [INFO ] Computed and/alt/rep : 10/18/10 causal constraints (skipped 0 transitions) in 1 ms.
[2024-06-01 05:58:44] [INFO ] Added : 8 causal constraints over 2 iterations in 7 ms. Result :sat
Minimization took 4 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1, 62, 150, 42, 62] Max Struct:[1001, 1001, 2001, 1000, 1001]
FORMULA RobotManipulation-PT-00500-UpperBounds-11 1000 TECHNIQUES TOPOLOGICAL PARIKH_WALK
FORMULA RobotManipulation-PT-00500-UpperBounds-05 1000 TECHNIQUES TOPOLOGICAL PARIKH_WALK
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1000, 1000, 1000, 1000] Max Struct:[1001, 1001, 2001, 1001]
Support contains 4 out of 15 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 11/11 transitions.
Discarding 1 places :
Implicit places reduction removed 1 places
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 0 with 2 rules applied. Total rules applied 2 place count 14 transition count 10
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 1 with 1 rules applied. Total rules applied 3 place count 13 transition count 10
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 1 Pre rules applied. Total rules applied 3 place count 13 transition count 9
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 2 with 2 rules applied. Total rules applied 5 place count 12 transition count 9
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 2 with 2 rules applied. Total rules applied 7 place count 11 transition count 8
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 2 with 1 rules applied. Total rules applied 8 place count 11 transition count 7
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 2 with 1 rules applied. Total rules applied 9 place count 10 transition count 7
Applied a total of 9 rules in 31 ms. Remains 10 /15 variables (removed 5) and now considering 7/11 (removed 4) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 43 ms. Remains : 10/15 places, 7/11 transitions.
// Phase 1: matrix 7 rows 10 cols
[2024-06-01 05:58:46] [INFO ] Computed 5 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[1000, 1000, 1000, 1000] Max Struct:[1001, 1001, 1000, 1001]
FORMULA RobotManipulation-PT-00500-UpperBounds-07 1000 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA RobotManipulation-PT-00500-UpperBounds-08 1000 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA RobotManipulation-PT-00500-UpperBounds-04 1000 TECHNIQUES TOPOLOGICAL INITIAL_STATE
RANDOM walk for 1000014 steps (2 resets) in 145 ms. (6849 steps per ms)
BEST_FIRST walk for 3000002 steps (6 resets) in 764 ms. (3921 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1000, 1000, 1000] Max Struct:[1001, 1001, 1001]
[2024-06-01 05:58:47] [INFO ] Invariant cache hit.
[2024-06-01 05:58:47] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2024-06-01 05:58:47] [INFO ] [Real]Absence check using 3 positive and 2 generalized place invariants in 1 ms returned unsat
[2024-06-01 05:58:47] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2024-06-01 05:58:47] [INFO ] [Real]Absence check using 3 positive and 2 generalized place invariants in 2 ms returned unsat
[2024-06-01 05:58:47] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2024-06-01 05:58:47] [INFO ] [Real]Absence check using 3 positive and 2 generalized place invariants in 0 ms returned unsat
Current structural bounds on expressions (after SMT) : Max Seen:[1000, 1000, 1000] Max Struct:[1000, 1000, 1000]
FORMULA RobotManipulation-PT-00500-UpperBounds-06 1000 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA RobotManipulation-PT-00500-UpperBounds-02 1000 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA RobotManipulation-PT-00500-UpperBounds-01 1000 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[] Max Struct:[]
RANDOM walk for 0 steps (0 resets) in 4 ms. (0 steps per ms) remains 0/0 properties
Finished probabilistic random walk after 0 steps, run visited all 0 properties in 0 ms. (steps per millisecond=0 )
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[] Max Struct:[]
All properties solved without resorting to model-checking.
Total runtime 4549 ms.
ITS solved all properties within timeout

BK_STOP 1717221527878

--------------------
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//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202405141337.jar
+ VERSION=202405141337
+ echo 'Running Version 202405141337'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination UpperBounds -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="RobotManipulation-PT-00500"
export BK_EXAMINATION="UpperBounds"
export BK_TOOL="ltsminxred"
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 2-5568"
echo " Executing tool ltsminxred"
echo " Input is RobotManipulation-PT-00500, examination is UpperBounds"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r524-tall-171679079900221"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/RobotManipulation-PT-00500.tgz
mv RobotManipulation-PT-00500 execution
cd execution
if [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "UpperBounds" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] || [ "UpperBounds" = "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 [ "UpperBounds" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "UpperBounds" != "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 "UpperBounds.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property UpperBounds.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "UpperBounds.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 '' UpperBounds.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] ; then
echo "FORMULA_NAME UpperBounds"
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 ;