fond
Model Checking Contest 2023
13th edition, Paris, France, April 26, 2023 (at TOOLympics II)
Execution of r215-smll-167840357800172
Last Updated
May 14, 2023

About the Execution of LTSMin+red for HealthRecord-PT-06

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
272.720 72238.00 151325.00 621.50 T normal

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.r215-smll-167840357800172.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 ltsminxred
Input is HealthRecord-PT-06, examination is QuasiLiveness
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r215-smll-167840357800172
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 484K
-rw-r--r-- 1 mcc users 7.8K Feb 26 18:11 CTLCardinality.txt
-rw-r--r-- 1 mcc users 89K Feb 26 18:11 CTLCardinality.xml
-rw-r--r-- 1 mcc users 4.4K Feb 26 18:06 CTLFireability.txt
-rw-r--r-- 1 mcc users 38K Feb 26 18:06 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.7K Feb 25 16:13 LTLCardinality.txt
-rw-r--r-- 1 mcc users 27K Feb 25 16:13 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.2K Feb 25 16:13 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Feb 25 16:13 LTLFireability.xml
-rw-r--r-- 1 mcc users 11K Feb 26 18:12 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 114K Feb 26 18:12 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 6.6K Feb 26 18:11 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 54K Feb 26 18:11 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Feb 25 16:13 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Feb 25 16:13 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 equiv_col
-rw-r--r-- 1 mcc users 3 Mar 5 18:22 instance
-rw-r--r-- 1 mcc users 6 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

FORMULA_NAME QuasiLiveness

=== Now, execution of the tool begins

BK_START 1678618169226

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=ltsminxred
BK_EXAMINATION=QuasiLiveness
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=1800
BK_INPUT=HealthRecord-PT-06
Applying reductions before tool ltsmin
Invoking reducer
Running Version 202303021504
[2023-03-12 10:49:32] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, QuasiLiveness, -timeout, 180, -rebuildPNML]
[2023-03-12 10:49:32] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-12 10:49:32] [INFO ] Load time of PNML (sax parser for PT used): 134 ms
[2023-03-12 10:49:32] [INFO ] Transformed 154 places.
[2023-03-12 10:49:32] [INFO ] Transformed 319 transitions.
[2023-03-12 10:49:32] [INFO ] Found NUPN structural information;
[2023-03-12 10:49:32] [INFO ] Parsed PT model containing 154 places and 319 transitions and 835 arcs in 307 ms.
Starting structural reductions in LIVENESS mode, iteration 0 : 154/154 places, 319/319 transitions.
Graph (trivial) has 262 edges and 154 vertex of which 14 / 154 are part of one of the 7 SCC in 8 ms
Free SCC test removed 7 places
Ensure Unique test removed 32 transitions
Reduce isomorphic transitions removed 32 transitions.
Performed 56 Post agglomeration using F-continuation condition.Transition count delta: 56
Deduced a syphon composed of 56 places in 1 ms
Reduce places removed 56 places and 0 transitions.
Iterating global reduction 0 with 112 rules applied. Total rules applied 113 place count 91 transition count 231
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 114 place count 91 transition count 230
Performed 27 Post agglomeration using F-continuation condition.Transition count delta: -33
Deduced a syphon composed of 27 places in 1 ms
Reduce places removed 27 places and 0 transitions.
Iterating global reduction 1 with 54 rules applied. Total rules applied 168 place count 64 transition count 263
Applied a total of 168 rules in 76 ms. Remains 64 /154 variables (removed 90) and now considering 263/319 (removed 56) transitions.
[2023-03-12 10:49:33] [INFO ] Flow matrix only has 216 transitions (discarded 47 similar events)
// Phase 1: matrix 216 rows 64 cols
[2023-03-12 10:49:33] [INFO ] Computed 18 place invariants in 30 ms
[2023-03-12 10:49:33] [INFO ] Implicit Places using invariants in 440 ms returned []
[2023-03-12 10:49:33] [INFO ] Flow matrix only has 216 transitions (discarded 47 similar events)
[2023-03-12 10:49:33] [INFO ] Invariant cache hit.
[2023-03-12 10:49:33] [INFO ] State equation strengthened by 84 read => feed constraints.
[2023-03-12 10:49:33] [INFO ] Implicit Places using invariants and state equation in 380 ms returned []
Implicit Place search using SMT with State Equation took 885 ms to find 0 implicit places.
[2023-03-12 10:49:33] [INFO ] Flow matrix only has 216 transitions (discarded 47 similar events)
[2023-03-12 10:49:33] [INFO ] Invariant cache hit.
[2023-03-12 10:49:34] [INFO ] Dead Transitions using invariants and state equation in 554 ms found 0 transitions.
Starting structural reductions in LIVENESS mode, iteration 1 : 64/154 places, 263/319 transitions.
Finished structural reductions in LIVENESS mode , in 1 iterations and 1519 ms. Remains : 64/154 places, 263/319 transitions.
Discarding 212 transitions out of 263. Remains 51
Initial state reduction rules removed 1 formulas.
Incomplete random walk after 10000 steps, including 1066 resets, run finished after 986 ms. (steps per millisecond=10 ) properties (out of 50) seen :35
Incomplete Best-First random walk after 1001 steps, including 14 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 15) seen :0
Incomplete Best-First random walk after 1001 steps, including 14 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 15) seen :0
Incomplete Best-First random walk after 1001 steps, including 21 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 15) seen :0
Incomplete Best-First random walk after 1001 steps, including 6 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 15) seen :1
Incomplete Best-First random walk after 1001 steps, including 13 resets, run finished after 13 ms. (steps per millisecond=77 ) properties (out of 14) seen :0
Incomplete Best-First random walk after 1001 steps, including 12 resets, run finished after 11 ms. (steps per millisecond=91 ) properties (out of 14) seen :0
Incomplete Best-First random walk after 1001 steps, including 15 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 14) seen :0
Incomplete Best-First random walk after 1001 steps, including 14 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 14) seen :0
Incomplete Best-First random walk after 1001 steps, including 12 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 14) seen :0
Incomplete Best-First random walk after 1001 steps, including 14 resets, run finished after 8 ms. (steps per millisecond=125 ) properties (out of 14) seen :0
Incomplete Best-First random walk after 1001 steps, including 14 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 14) seen :0
Incomplete Best-First random walk after 1001 steps, including 10 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 14) seen :0
Incomplete Best-First random walk after 1001 steps, including 12 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 14) seen :0
Incomplete Best-First random walk after 1001 steps, including 10 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 14) seen :0
Incomplete Best-First random walk after 1001 steps, including 12 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 14) seen :0
Running SMT prover for 14 properties.
[2023-03-12 10:49:35] [INFO ] Flow matrix only has 216 transitions (discarded 47 similar events)
[2023-03-12 10:49:35] [INFO ] Invariant cache hit.
[2023-03-12 10:49:35] [INFO ] [Real]Absence check using 10 positive place invariants in 9 ms returned sat
[2023-03-12 10:49:35] [INFO ] [Real]Absence check using 10 positive and 8 generalized place invariants in 4 ms returned sat
[2023-03-12 10:49:36] [INFO ] After 450ms SMT Verify possible using state equation in real domain returned unsat :0 sat :3 real:11
[2023-03-12 10:49:36] [INFO ] State equation strengthened by 84 read => feed constraints.
[2023-03-12 10:49:36] [INFO ] After 96ms SMT Verify possible using 84 Read/Feed constraints in real domain returned unsat :0 sat :0 real:14
[2023-03-12 10:49:36] [INFO ] After 756ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:14
[2023-03-12 10:49:36] [INFO ] [Nat]Absence check using 10 positive place invariants in 11 ms returned sat
[2023-03-12 10:49:36] [INFO ] [Nat]Absence check using 10 positive and 8 generalized place invariants in 8 ms returned sat
[2023-03-12 10:49:37] [INFO ] After 347ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :14
[2023-03-12 10:49:37] [INFO ] After 233ms SMT Verify possible using 84 Read/Feed constraints in natural domain returned unsat :0 sat :14
[2023-03-12 10:49:37] [INFO ] After 567ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :14
Attempting to minimize the solution found.
Minimization took 246 ms.
[2023-03-12 10:49:37] [INFO ] After 1379ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :14
Parikh walk visited 0 properties in 9 ms.
Support contains 27 out of 64 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 64/64 places, 263/263 transitions.
Graph (complete) has 375 edges and 64 vertex of which 55 are kept as prefixes of interest. Removing 9 places using SCC suffix rule.4 ms
Discarding 9 places :
Also discarding 9 output transitions
Drop transitions removed 9 transitions
Drop transitions removed 11 transitions
Reduce isomorphic transitions removed 11 transitions.
Iterating post reduction 0 with 11 rules applied. Total rules applied 12 place count 55 transition count 243
Discarding 6 places :
Symmetric choice reduction at 1 with 6 rule applications. Total rules 18 place count 49 transition count 217
Iterating global reduction 1 with 6 rules applied. Total rules applied 24 place count 49 transition count 217
Ensure Unique test removed 19 transitions
Reduce isomorphic transitions removed 19 transitions.
Iterating post reduction 1 with 19 rules applied. Total rules applied 43 place count 49 transition count 198
Drop transitions removed 24 transitions
Redundant transition composition rules discarded 24 transitions
Iterating global reduction 2 with 24 rules applied. Total rules applied 67 place count 49 transition count 174
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 1 Pre rules applied. Total rules applied 67 place count 49 transition count 173
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 69 place count 48 transition count 173
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 0
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 71 place count 47 transition count 173
Partial Free-agglomeration rule applied 7 times.
Drop transitions removed 7 transitions
Iterating global reduction 2 with 7 rules applied. Total rules applied 78 place count 47 transition count 173
Applied a total of 78 rules in 84 ms. Remains 47 /64 variables (removed 17) and now considering 173/263 (removed 90) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 84 ms. Remains : 47/64 places, 173/263 transitions.
Incomplete random walk after 1000000 steps, including 109062 resets, run finished after 26764 ms. (steps per millisecond=37 ) properties (out of 14) seen :3
Incomplete Best-First random walk after 1000001 steps, including 17855 resets, run finished after 4336 ms. (steps per millisecond=230 ) properties (out of 11) seen :0
Incomplete Best-First random walk after 1000001 steps, including 17881 resets, run finished after 3800 ms. (steps per millisecond=263 ) properties (out of 11) seen :0
Incomplete Best-First random walk after 1000000 steps, including 20621 resets, run finished after 4779 ms. (steps per millisecond=209 ) properties (out of 11) seen :0
Incomplete Best-First random walk after 1000001 steps, including 16845 resets, run finished after 2521 ms. (steps per millisecond=396 ) properties (out of 11) seen :8
Running SMT prover for 3 properties.
[2023-03-12 10:50:20] [INFO ] Flow matrix only has 162 transitions (discarded 11 similar events)
// Phase 1: matrix 162 rows 47 cols
[2023-03-12 10:50:20] [INFO ] Computed 9 place invariants in 3 ms
[2023-03-12 10:50:20] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2023-03-12 10:50:20] [INFO ] [Real]Absence check using 1 positive and 8 generalized place invariants in 5 ms returned sat
[2023-03-12 10:50:20] [INFO ] After 87ms SMT Verify possible using state equation in real domain returned unsat :0 sat :3
[2023-03-12 10:50:20] [INFO ] State equation strengthened by 74 read => feed constraints.
[2023-03-12 10:50:20] [INFO ] After 41ms SMT Verify possible using 74 Read/Feed constraints in real domain returned unsat :0 sat :0 real:3
[2023-03-12 10:50:20] [INFO ] After 195ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:3
[2023-03-12 10:50:20] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2023-03-12 10:50:20] [INFO ] [Nat]Absence check using 1 positive and 8 generalized place invariants in 3 ms returned sat
[2023-03-12 10:50:20] [INFO ] After 83ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :3
[2023-03-12 10:50:20] [INFO ] After 42ms SMT Verify possible using 74 Read/Feed constraints in natural domain returned unsat :0 sat :3
[2023-03-12 10:50:20] [INFO ] After 89ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :3
Attempting to minimize the solution found.
Minimization took 38 ms.
[2023-03-12 10:50:20] [INFO ] After 255ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :3
Fused 3 Parikh solutions to 2 different solutions.
Parikh walk visited 0 properties in 0 ms.
Support contains 12 out of 47 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 47/47 places, 173/173 transitions.
Discarding 4 places :
Symmetric choice reduction at 0 with 4 rule applications. Total rules 4 place count 43 transition count 157
Iterating global reduction 0 with 4 rules applied. Total rules applied 8 place count 43 transition count 157
Discarding 3 places :
Symmetric choice reduction at 0 with 3 rule applications. Total rules 11 place count 40 transition count 127
Iterating global reduction 0 with 3 rules applied. Total rules applied 14 place count 40 transition count 127
Discarding 3 places :
Symmetric choice reduction at 0 with 3 rule applications. Total rules 17 place count 37 transition count 118
Iterating global reduction 0 with 3 rules applied. Total rules applied 20 place count 37 transition count 118
Ensure Unique test removed 18 transitions
Reduce isomorphic transitions removed 18 transitions.
Iterating post reduction 0 with 18 rules applied. Total rules applied 38 place count 37 transition count 100
Partial Free-agglomeration rule applied 4 times.
Drop transitions removed 4 transitions
Iterating global reduction 1 with 4 rules applied. Total rules applied 42 place count 37 transition count 100
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 43 place count 36 transition count 96
Iterating global reduction 1 with 1 rules applied. Total rules applied 44 place count 36 transition count 96
Drop transitions removed 4 transitions
Redundant transition composition rules discarded 4 transitions
Iterating global reduction 1 with 4 rules applied. Total rules applied 48 place count 36 transition count 92
Applied a total of 48 rules in 26 ms. Remains 36 /47 variables (removed 11) and now considering 92/173 (removed 81) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 26 ms. Remains : 36/47 places, 92/173 transitions.
Incomplete random walk after 1000000 steps, including 109147 resets, run finished after 12187 ms. (steps per millisecond=82 ) properties (out of 3) seen :0
Incomplete Best-First random walk after 1000000 steps, including 18591 resets, run finished after 2450 ms. (steps per millisecond=408 ) properties (out of 3) seen :0
Incomplete Best-First random walk after 1000001 steps, including 18734 resets, run finished after 2361 ms. (steps per millisecond=423 ) properties (out of 3) seen :0
Incomplete Best-First random walk after 1000001 steps, including 20676 resets, run finished after 2676 ms. (steps per millisecond=373 ) properties (out of 3) seen :0
Finished probabilistic random walk after 1135 steps, run visited all 3 properties in 24 ms. (steps per millisecond=47 )
Probabilistic random walk after 1135 steps, saw 471 distinct states, run finished after 24 ms. (steps per millisecond=47 ) properties seen :3
Able to resolve query QuasiLiveness after proving 51 properties.
FORMULA QuasiLiveness TRUE TECHNIQUES RANDOM_WALK PROBABILISTIC_WALK BESTFIRST_WALK TOPOLOGICAL INITIAL_STATE
Total runtime 67745 ms.
ITS solved all properties within timeout

BK_STOP 1678618241464

--------------------
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_1.0.0.202303021504.jar
+ VERSION=202303021504
+ echo 'Running Version 202303021504'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination QuasiLiveness -timeout 180 -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="HealthRecord-PT-06"
export BK_EXAMINATION="QuasiLiveness"
export BK_TOOL="ltsminxred"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="1800"
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 ltsminxred"
echo " Input is HealthRecord-PT-06, examination is QuasiLiveness"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r215-smll-167840357800172"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/HealthRecord-PT-06.tgz
mv HealthRecord-PT-06 execution
cd execution
if [ "QuasiLiveness" = "ReachabilityDeadlock" ] || [ "QuasiLiveness" = "UpperBounds" ] || [ "QuasiLiveness" = "QuasiLiveness" ] || [ "QuasiLiveness" = "StableMarking" ] || [ "QuasiLiveness" = "Liveness" ] || [ "QuasiLiveness" = "OneSafe" ] || [ "QuasiLiveness" = "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 [ "QuasiLiveness" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "QuasiLiveness" != "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 "QuasiLiveness.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property QuasiLiveness.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "QuasiLiveness.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 '' QuasiLiveness.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "QuasiLiveness" = "ReachabilityDeadlock" ] || [ "QuasiLiveness" = "QuasiLiveness" ] || [ "QuasiLiveness" = "StableMarking" ] || [ "QuasiLiveness" = "Liveness" ] || [ "QuasiLiveness" = "OneSafe" ] ; then
echo "FORMULA_NAME QuasiLiveness"
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 ;