fond
Model Checking Contest 2025
15th edition, Paris, France, June 24, 2025
Execution of r198-tall-174894533400792
Last Updated
June 24, 2025

About the Execution of ITS-Tools for ShieldPPPt-PT-001B

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
0.000 29154.00 0.00 0.00 1.7903E+0007 ? 1 12 normal

Execution Chart

Sorry, for this execution, no execution chart could be reported.

Trace from the execution

Formatting '/data/fkordon/mcc2025-input.r198-tall-174894533400792.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2025-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 2-5832
Executing tool itstools
Input is ShieldPPPt-PT-001B, examination is StateSpace
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r198-tall-174894533400792
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 508K
-rw-r--r-- 1 mcc users 6.1K May 29 14:47 CTLCardinality.txt
-rw-r--r-- 1 mcc users 63K May 29 14:47 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.0K May 29 14:47 CTLFireability.txt
-rw-r--r-- 1 mcc users 58K May 29 14:47 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 29 14:33 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 4.0K May 29 14:47 LTLCardinality.txt
-rw-r--r-- 1 mcc users 30K May 29 14:47 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.1K May 29 14:47 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K May 29 14:47 LTLFireability.xml
-rw-r--r-- 1 mcc users 14K May 29 14:47 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 158K May 29 14:47 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 8.1K May 29 14:47 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 71K May 29 14:47 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K May 29 14:47 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K May 29 14:47 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 29 14:33 equiv_col
-rw-r--r-- 1 mcc users 5 May 29 14:33 instance
-rw-r--r-- 1 mcc users 6 May 29 14:33 iscolored
-rw-r--r-- 1 mcc users 19K May 29 14:33 model.pnml

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

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

no data necessary for post analysis


=== Now, execution of the tool begins

BK_START 1749295033240

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=StateSpace
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=ShieldPPPt-PT-001B
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
StateSpace PT
Running Version 202505121319
[2025-06-07 11:17:14] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, StateSpace, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2025-06-07 11:17:14] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2025-06-07 11:17:14] [INFO ] Load time of PNML (sax parser for PT used): 49 ms
[2025-06-07 11:17:14] [INFO ] Transformed 81 places.
[2025-06-07 11:17:14] [INFO ] Transformed 74 transitions.
[2025-06-07 11:17:14] [INFO ] Found NUPN structural information;
[2025-06-07 11:17:14] [INFO ] Parsed PT model containing 81 places and 74 transitions and 184 arcs in 154 ms.
Starting structural reductions in STATESPACE mode, iteration 0 : 81/81 places, 74/74 transitions.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2025-06-07 11:17:14] [INFO ] Redundant transitions in 3 ms returned []
Running 73 sub problems to find dead transitions.
// Phase 1: matrix 74 rows 81 cols
[2025-06-07 11:17:14] [INFO ] Computed 12 invariants in 5 ms
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/80 variables, 80/80 constraints. Problems are: Problem set: 0 solved, 73 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/80 variables, 0/80 constraints. Problems are: Problem set: 0 solved, 73 unsolved
At refinement iteration 2 (OVERLAPS) 1/81 variables, 12/92 constraints. Problems are: Problem set: 0 solved, 73 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/81 variables, 1/93 constraints. Problems are: Problem set: 0 solved, 73 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:15] [INFO ] Deduced a trap composed of 11 places in 77 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:15] [INFO ] Deduced a trap composed of 16 places in 50 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:15] [INFO ] Deduced a trap composed of 12 places in 36 ms of which 2 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:15] [INFO ] Deduced a trap composed of 16 places in 38 ms of which 2 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:15] [INFO ] Deduced a trap composed of 18 places in 36 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:16] [INFO ] Deduced a trap composed of 19 places in 36 ms of which 2 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:16] [INFO ] Deduced a trap composed of 20 places in 48 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:16] [INFO ] Deduced a trap composed of 18 places in 37 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:16] [INFO ] Deduced a trap composed of 17 places in 40 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:16] [INFO ] Deduced a trap composed of 20 places in 34 ms of which 2 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:16] [INFO ] Deduced a trap composed of 22 places in 29 ms of which 3 ms to minimize.
At refinement iteration 4 (INCLUDED_ONLY) 0/81 variables, 11/104 constraints. Problems are: Problem set: 0 solved, 73 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:16] [INFO ] Deduced a trap composed of 20 places in 32 ms of which 2 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:16] [INFO ] Deduced a trap composed of 21 places in 40 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/81 variables, 2/106 constraints. Problems are: Problem set: 0 solved, 73 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/81 variables, 0/106 constraints. Problems are: Problem set: 0 solved, 73 unsolved
At refinement iteration 7 (OVERLAPS) 74/155 variables, 81/187 constraints. Problems are: Problem set: 0 solved, 73 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/155 variables, 0/187 constraints. Problems are: Problem set: 0 solved, 73 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:17] [INFO ] Deduced a trap composed of 21 places in 40 ms of which 3 ms to minimize.
At refinement iteration 9 (OVERLAPS) 0/155 variables, 1/188 constraints. Problems are: Problem set: 0 solved, 73 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/155 variables, 0/188 constraints. Problems are: Problem set: 0 solved, 73 unsolved
At refinement iteration 11 (OVERLAPS) 0/155 variables, 0/188 constraints. Problems are: Problem set: 0 solved, 73 unsolved
No progress, stopping.
After SMT solving in domain Real declared 155/155 variables, and 188 constraints, problems are : Problem set: 0 solved, 73 unsolved in 4100 ms.
Refiners :[Domain max(s): 81/81 constraints, Positive P Invariants (semi-flows): 12/12 constraints, State Equation: 81/81 constraints, PredecessorRefiner: 73/73 constraints, Known Traps: 14/14 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 73 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/80 variables, 80/80 constraints. Problems are: Problem set: 0 solved, 73 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/80 variables, 0/80 constraints. Problems are: Problem set: 0 solved, 73 unsolved
At refinement iteration 2 (OVERLAPS) 1/81 variables, 12/92 constraints. Problems are: Problem set: 0 solved, 73 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/81 variables, 1/93 constraints. Problems are: Problem set: 0 solved, 73 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/81 variables, 14/107 constraints. Problems are: Problem set: 0 solved, 73 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/81 variables, 0/107 constraints. Problems are: Problem set: 0 solved, 73 unsolved
At refinement iteration 6 (OVERLAPS) 74/155 variables, 81/188 constraints. Problems are: Problem set: 0 solved, 73 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/155 variables, 73/261 constraints. Problems are: Problem set: 0 solved, 73 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:19] [INFO ] Deduced a trap composed of 19 places in 35 ms of which 2 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:19] [INFO ] Deduced a trap composed of 21 places in 39 ms of which 2 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:19] [INFO ] Deduced a trap composed of 14 places in 32 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:20] [INFO ] Deduced a trap composed of 8 places in 37 ms of which 2 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/155 variables, 4/265 constraints. Problems are: Problem set: 0 solved, 73 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:20] [INFO ] Deduced a trap composed of 19 places in 29 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:20] [INFO ] Deduced a trap composed of 20 places in 47 ms of which 2 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:20] [INFO ] Deduced a trap composed of 21 places in 35 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:20] [INFO ] Deduced a trap composed of 14 places in 38 ms of which 3 ms to minimize.
At refinement iteration 9 (INCLUDED_ONLY) 0/155 variables, 4/269 constraints. Problems are: Problem set: 0 solved, 73 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:21] [INFO ] Deduced a trap along path composed of 9 places in 45 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:21] [INFO ] Deduced a trap along path composed of 4 places in 25 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:21] [INFO ] Deduced a trap along path composed of 6 places in 33 ms of which 2 ms to minimize.
At refinement iteration 10 (INCLUDED_ONLY) 0/155 variables, 3/272 constraints. Problems are: Problem set: 0 solved, 73 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:22] [INFO ] Deduced a trap composed of 30 places in 41 ms of which 3 ms to minimize.
At refinement iteration 11 (INCLUDED_ONLY) 0/155 variables, 1/273 constraints. Problems are: Problem set: 0 solved, 73 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:23] [INFO ] Deduced a trap composed of 33 places in 40 ms of which 4 ms to minimize.
At refinement iteration 12 (INCLUDED_ONLY) 0/155 variables, 1/274 constraints. Problems are: Problem set: 0 solved, 73 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:25] [INFO ] Deduced a trap composed of 27 places in 42 ms of which 2 ms to minimize.
At refinement iteration 13 (INCLUDED_ONLY) 0/155 variables, 1/275 constraints. Problems are: Problem set: 0 solved, 73 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/155 variables, 0/275 constraints. Problems are: Problem set: 0 solved, 73 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2025-06-07 11:17:31] [INFO ] Deduced a trap along path composed of 9 places in 31 ms of which 1 ms to minimize.
At refinement iteration 15 (OVERLAPS) 0/155 variables, 1/276 constraints. Problems are: Problem set: 0 solved, 73 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/155 variables, 0/276 constraints. Problems are: Problem set: 0 solved, 73 unsolved
At refinement iteration 17 (OVERLAPS) 0/155 variables, 0/276 constraints. Problems are: Problem set: 0 solved, 73 unsolved
No progress, stopping.
After SMT solving in domain Int declared 155/155 variables, and 276 constraints, problems are : Problem set: 0 solved, 73 unsolved in 22728 ms.
Refiners :[Domain max(s): 81/81 constraints, Positive P Invariants (semi-flows): 12/12 constraints, State Equation: 81/81 constraints, PredecessorRefiner: 73/73 constraints, Known Traps: 25/25 constraints, Known Traps Along Path: 4/4 constraints]
After SMT, in 26891ms problems are : Problem set: 0 solved, 73 unsolved
Search for dead transitions found 0 dead transitions in 26909ms
Finished structural reductions in STATESPACE mode , in 1 iterations and 27019 ms. Remains : 81/81 places, 74/74 transitions.
Final net has 81 places and 74 transitions.
[2025-06-07 11:17:41] [INFO ] Flatten gal took : 27 ms
[2025-06-07 11:17:41] [INFO ] Applying decomposition
[2025-06-07 11:17:41] [INFO ] Flatten gal took : 8 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph2328373671757347360.txt' '-o' '/tmp/graph2328373671757347360.bin' '-w' '/tmp/graph2328373671757347360.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph2328373671757347360.bin' '-l' '-1' '-v' '-w' '/tmp/graph2328373671757347360.weights' '-q' '0' '-e' '0.001'
[2025-06-07 11:17:42] [INFO ] Decomposing Gal with order
[2025-06-07 11:17:42] [INFO ] Rewriting arrays to variables to allow decomposition.
[2025-06-07 11:17:42] [INFO ] Removed a total of 6 redundant transitions.
[2025-06-07 11:17:42] [INFO ] Flatten gal took : 38 ms
[2025-06-07 11:17:42] [INFO ] Fuse similar labels procedure discarded/fused a total of 0 labels/synchronizations in 2 ms.
[2025-06-07 11:17:42] [INFO ] Time to serialize gal into /tmp/StateSpace8072691258953947187.gal : 4 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/StateSpace8072691258953947187.gal' '-t' 'CGAL' '--stats'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...219
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
petri\_inst\_inst\_mod\_flat,1.7903e+07,0.207949,12184,423,46,16113,254,229,27612,59,480,0
Total reachable state count : 17903046

Max variable value : 1
STATE_SPACE MAX_TOKEN_IN_PLACE 1 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Maximum sum along a path : 12
STATE_SPACE MAX_TOKEN_PER_MARKING 12 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Exact state count : 17903046
STATE_SPACE STATES 17903046 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Total runtime 27812 ms.

BK_STOP 1749295062394

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

+ export BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
+ BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ StateSpace = StateSpace ]]
+ [[ -f modelMain.xml ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution StateSpace -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202505121319.jar
+ VERSION=202505121319
+ echo 'Running Version 202505121319'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination StateSpace -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600

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="ShieldPPPt-PT-001B"
export BK_EXAMINATION="StateSpace"
export BK_TOOL="itstools"
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 2-5832"
echo " Executing tool itstools"
echo " Input is ShieldPPPt-PT-001B, examination is StateSpace"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r198-tall-174894533400792"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/ShieldPPPt-PT-001B.tgz
mv ShieldPPPt-PT-001B execution
cd execution
if [ "StateSpace" = "ReachabilityDeadlock" ] || [ "StateSpace" = "UpperBounds" ] || [ "StateSpace" = "QuasiLiveness" ] || [ "StateSpace" = "StableMarking" ] || [ "StateSpace" = "Liveness" ] || [ "StateSpace" = "OneSafe" ] || [ "StateSpace" = "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 [ "StateSpace" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "StateSpace" != "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 "StateSpace.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 '' StateSpace.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "StateSpace" = "ReachabilityDeadlock" ] || [ "StateSpace" = "QuasiLiveness" ] || [ "StateSpace" = "StableMarking" ] || [ "StateSpace" = "Liveness" ] || [ "StateSpace" = "OneSafe" ] ; then
echo "FORMULA_NAME StateSpace"
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 ;