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.r041-tajo-167813694700423.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 ltsminxred
Input is BugTracking-PT-q8m032, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r041-tajo-167813694700423
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 16M
-rw-r--r-- 1 mcc users 7.2K Feb 26 06:22 CTLCardinality.txt
-rw-r--r-- 1 mcc users 62K Feb 26 06:22 CTLCardinality.xml
-rw-r--r-- 1 mcc users 4.5K Feb 26 06:05 CTLFireability.txt
-rw-r--r-- 1 mcc users 35K Feb 26 06:05 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.4K Feb 25 15:38 LTLCardinality.txt
-rw-r--r-- 1 mcc users 25K Feb 25 15:38 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K Feb 25 15:38 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Feb 25 15:38 LTLFireability.xml
-rw-r--r-- 1 mcc users 17K Feb 26 07:09 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 142K Feb 26 07:09 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 6.1K Feb 26 06:38 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 44K Feb 26 06:38 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K Feb 25 15:38 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.9K Feb 25 15:38 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 equiv_col
-rw-r--r-- 1 mcc users 7 Mar 5 18:22 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 iscolored
-rw-r--r-- 1 mcc users 16M 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 BugTracking-PT-q8m032-ReachabilityFireability-00
FORMULA_NAME BugTracking-PT-q8m032-ReachabilityFireability-01
FORMULA_NAME BugTracking-PT-q8m032-ReachabilityFireability-02
FORMULA_NAME BugTracking-PT-q8m032-ReachabilityFireability-03
FORMULA_NAME BugTracking-PT-q8m032-ReachabilityFireability-04
FORMULA_NAME BugTracking-PT-q8m032-ReachabilityFireability-05
FORMULA_NAME BugTracking-PT-q8m032-ReachabilityFireability-06
FORMULA_NAME BugTracking-PT-q8m032-ReachabilityFireability-07
FORMULA_NAME BugTracking-PT-q8m032-ReachabilityFireability-08
FORMULA_NAME BugTracking-PT-q8m032-ReachabilityFireability-09
FORMULA_NAME BugTracking-PT-q8m032-ReachabilityFireability-10
FORMULA_NAME BugTracking-PT-q8m032-ReachabilityFireability-11
FORMULA_NAME BugTracking-PT-q8m032-ReachabilityFireability-12
FORMULA_NAME BugTracking-PT-q8m032-ReachabilityFireability-13
FORMULA_NAME BugTracking-PT-q8m032-ReachabilityFireability-14
FORMULA_NAME BugTracking-PT-q8m032-ReachabilityFireability-15

=== Now, execution of the tool begins

BK_START 1678636008207

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=ReachabilityFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=BugTracking-PT-q8m032
Applying reductions before tool ltsmin
Invoking reducer
Running Version 202303021504
[2023-03-12 15:46:49] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityFireability, -timeout, 360, -rebuildPNML]
[2023-03-12 15:46:49] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-12 15:46:51] [INFO ] Load time of PNML (sax parser for PT used): 1071 ms
[2023-03-12 15:46:51] [INFO ] Transformed 754 places.
[2023-03-12 15:46:51] [INFO ] Transformed 27370 transitions.
[2023-03-12 15:46:51] [INFO ] Parsed PT model containing 754 places and 27370 transitions and 136172 arcs in 1325 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityFireability.xml in 27 ms.
Working with output stream class java.io.PrintStream
Deduced a syphon composed of 474 places in 228 ms
Reduce places removed 474 places and 23466 transitions.
FORMULA BugTracking-PT-q8m032-ReachabilityFireability-00 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA BugTracking-PT-q8m032-ReachabilityFireability-01 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA BugTracking-PT-q8m032-ReachabilityFireability-02 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA BugTracking-PT-q8m032-ReachabilityFireability-04 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA BugTracking-PT-q8m032-ReachabilityFireability-05 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA BugTracking-PT-q8m032-ReachabilityFireability-06 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA BugTracking-PT-q8m032-ReachabilityFireability-08 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA BugTracking-PT-q8m032-ReachabilityFireability-09 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA BugTracking-PT-q8m032-ReachabilityFireability-10 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA BugTracking-PT-q8m032-ReachabilityFireability-11 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA BugTracking-PT-q8m032-ReachabilityFireability-12 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA BugTracking-PT-q8m032-ReachabilityFireability-13 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA BugTracking-PT-q8m032-ReachabilityFireability-15 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Incomplete random walk after 10000 steps, including 11 resets, run finished after 417 ms. (steps per millisecond=23 ) properties (out of 3) seen :0
Incomplete Best-First random walk after 10001 steps, including 3 resets, run finished after 126 ms. (steps per millisecond=79 ) properties (out of 3) seen :0
Incomplete Best-First random walk after 10001 steps, including 3 resets, run finished after 61 ms. (steps per millisecond=163 ) properties (out of 3) seen :0
Incomplete Best-First random walk after 10001 steps, including 3 resets, run finished after 47 ms. (steps per millisecond=212 ) properties (out of 3) seen :0
Interrupted probabilistic random walk after 107602 steps, run timeout after 3001 ms. (steps per millisecond=35 ) properties seen :{}
Probabilistic random walk after 107602 steps, saw 54637 distinct states, run finished after 3002 ms. (steps per millisecond=35 ) properties seen :0
Running SMT prover for 3 properties.
[2023-03-12 15:46:55] [INFO ] Flow matrix only has 3729 transitions (discarded 175 similar events)
// Phase 1: matrix 3729 rows 280 cols
[2023-03-12 15:46:55] [INFO ] Computed 10 place invariants in 61 ms
[2023-03-12 15:46:56] [INFO ] [Real]Absence check using 10 positive place invariants in 17 ms returned sat
[2023-03-12 15:46:57] [INFO ] After 1964ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:3
[2023-03-12 15:46:57] [INFO ] [Nat]Absence check using 10 positive place invariants in 4 ms returned sat
[2023-03-12 15:46:58] [INFO ] After 892ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :3
[2023-03-12 15:46:58] [INFO ] State equation strengthened by 303 read => feed constraints.
[2023-03-12 15:46:59] [INFO ] After 518ms SMT Verify possible using 303 Read/Feed constraints in natural domain returned unsat :0 sat :3
[2023-03-12 15:47:00] [INFO ] Deduced a trap composed of 12 places in 533 ms of which 25 ms to minimize.
[2023-03-12 15:47:00] [INFO ] Trap strengthening procedure managed to obtain unsat after adding 1 trap constraints in 609 ms
[2023-03-12 15:47:00] [INFO ] Deduced a trap composed of 33 places in 431 ms of which 1 ms to minimize.
[2023-03-12 15:47:00] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 630 ms
[2023-03-12 15:47:01] [INFO ] Deduced a trap composed of 10 places in 214 ms of which 1 ms to minimize.
[2023-03-12 15:47:01] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 376 ms
[2023-03-12 15:47:01] [INFO ] After 2346ms SMT Verify possible using trap constraints in natural domain returned unsat :1 sat :2
Attempting to minimize the solution found.
Minimization took 216 ms.
[2023-03-12 15:47:01] [INFO ] After 3666ms SMT Verify possible using all constraints in natural domain returned unsat :2 sat :1
FORMULA BugTracking-PT-q8m032-ReachabilityFireability-07 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA BugTracking-PT-q8m032-ReachabilityFireability-03 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
Fused 3 Parikh solutions to 1 different solutions.
Parikh walk visited 0 properties in 30 ms.
Support contains 2 out of 280 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 280/280 places, 3904/3904 transitions.
Graph (complete) has 4653 edges and 280 vertex of which 278 are kept as prefixes of interest. Removing 2 places using SCC suffix rule.23 ms
Discarding 2 places :
Also discarding 0 output transitions
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 2 place count 277 transition count 3871
Iterating global reduction 0 with 1 rules applied. Total rules applied 3 place count 277 transition count 3871
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: -6
Deduced a syphon composed of 2 places in 5 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 0 with 4 rules applied. Total rules applied 7 place count 275 transition count 3877
Free-agglomeration rule applied 6 times.
Iterating global reduction 0 with 6 rules applied. Total rules applied 13 place count 275 transition count 3871
Reduce places removed 6 places and 0 transitions.
Iterating post reduction 0 with 6 rules applied. Total rules applied 19 place count 269 transition count 3871
Applied a total of 19 rules in 417 ms. Remains 269 /280 variables (removed 11) and now considering 3871/3904 (removed 33) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 419 ms. Remains : 269/280 places, 3871/3904 transitions.
Incomplete random walk after 10010 steps, including 2 resets, run finished after 24 ms. (steps per millisecond=417 ) properties (out of 1) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 27 ms. (steps per millisecond=370 ) properties (out of 1) seen :0
Interrupted probabilistic random walk after 121700 steps, run timeout after 3001 ms. (steps per millisecond=40 ) properties seen :{}
Probabilistic random walk after 121700 steps, saw 43985 distinct states, run finished after 3001 ms. (steps per millisecond=40 ) properties seen :0
Running SMT prover for 1 properties.
[2023-03-12 15:47:04] [INFO ] Flow matrix only has 3699 transitions (discarded 172 similar events)
// Phase 1: matrix 3699 rows 269 cols
[2023-03-12 15:47:05] [INFO ] Computed 8 place invariants in 19 ms
[2023-03-12 15:47:05] [INFO ] [Real]Absence check using 8 positive place invariants in 3 ms returned sat
[2023-03-12 15:47:05] [INFO ] After 737ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
[2023-03-12 15:47:05] [INFO ] [Nat]Absence check using 8 positive place invariants in 2 ms returned sat
[2023-03-12 15:47:06] [INFO ] After 685ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2023-03-12 15:47:06] [INFO ] State equation strengthened by 283 read => feed constraints.
[2023-03-12 15:47:06] [INFO ] After 229ms SMT Verify possible using 283 Read/Feed constraints in natural domain returned unsat :0 sat :1
[2023-03-12 15:47:06] [INFO ] After 410ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
Attempting to minimize the solution found.
Minimization took 107 ms.
[2023-03-12 15:47:07] [INFO ] After 1306ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
Parikh walk visited 0 properties in 3 ms.
Support contains 2 out of 269 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 269/269 places, 3871/3871 transitions.
Applied a total of 0 rules in 84 ms. Remains 269 /269 variables (removed 0) and now considering 3871/3871 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 84 ms. Remains : 269/269 places, 3871/3871 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 269/269 places, 3871/3871 transitions.
Applied a total of 0 rules in 106 ms. Remains 269 /269 variables (removed 0) and now considering 3871/3871 (removed 0) transitions.
[2023-03-12 15:47:07] [INFO ] Flow matrix only has 3699 transitions (discarded 172 similar events)
[2023-03-12 15:47:07] [INFO ] Invariant cache hit.
[2023-03-12 15:47:07] [INFO ] Implicit Places using invariants in 579 ms returned []
[2023-03-12 15:47:07] [INFO ] Flow matrix only has 3699 transitions (discarded 172 similar events)
[2023-03-12 15:47:07] [INFO ] Invariant cache hit.
[2023-03-12 15:47:10] [INFO ] State equation strengthened by 283 read => feed constraints.
[2023-03-12 15:47:16] [INFO ] Implicit Places using invariants and state equation in 8444 ms returned []
Implicit Place search using SMT with State Equation took 9039 ms to find 0 implicit places.
[2023-03-12 15:47:16] [INFO ] Redundant transitions in 300 ms returned []
[2023-03-12 15:47:16] [INFO ] Flow matrix only has 3699 transitions (discarded 172 similar events)
[2023-03-12 15:47:16] [INFO ] Invariant cache hit.
[2023-03-12 15:47:46] [INFO ] Performed 1734/3871 'is it Dead' test of which 0 returned DEAD in 30 seconds.
[2023-03-12 15:47:47] [INFO ] Dead Transitions using invariants and state equation in 31172 ms found 0 transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 40668 ms. Remains : 269/269 places, 3871/3871 transitions.
Drop transitions removed 6 transitions
Ensure Unique test removed 167 transitions
Reduce isomorphic transitions removed 173 transitions.
Iterating post reduction 0 with 173 rules applied. Total rules applied 173 place count 269 transition count 3698
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Deduced a syphon composed of 2 places in 1 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 1 with 4 rules applied. Total rules applied 177 place count 267 transition count 3696
Drop transitions removed 1 transitions
Redundant transition composition rules discarded 1 transitions
Iterating global reduction 1 with 1 rules applied. Total rules applied 178 place count 267 transition count 3695
Free-agglomeration rule applied 4 times.
Iterating global reduction 1 with 4 rules applied. Total rules applied 182 place count 267 transition count 3691
Reduce places removed 4 places and 0 transitions.
Iterating post reduction 1 with 4 rules applied. Total rules applied 186 place count 263 transition count 3691
Applied a total of 186 rules in 730 ms. Remains 263 /269 variables (removed 6) and now considering 3691/3871 (removed 180) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 3691 rows 263 cols
[2023-03-12 15:47:48] [INFO ] Computed 9 place invariants in 31 ms
[2023-03-12 15:47:48] [INFO ] [Real]Absence check using 9 positive place invariants in 3 ms returned sat
[2023-03-12 15:47:49] [INFO ] After 925ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
[2023-03-12 15:47:49] [INFO ] [Nat]Absence check using 9 positive place invariants in 3 ms returned sat
[2023-03-12 15:47:50] [INFO ] After 706ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2023-03-12 15:47:50] [INFO ] After 822ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
Attempting to minimize the solution found.
Minimization took 63 ms.
[2023-03-12 15:47:50] [INFO ] After 958ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2023-03-12 15:47:50] [INFO ] Export to MCC of 1 properties in file /home/mcc/execution/ReachabilityFireability.sr.xml took 5 ms.
[2023-03-12 15:47:50] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml of net with 269 places, 3871 transitions and 19045 arcs took 26 ms.
[2023-03-12 15:47:51] [INFO ] Flatten gal took : 489 ms
Total runtime 61706 ms.
There are residual formulas that ITS could not solve within timeout
pnml2lts-sym model.pnml --lace-workers=4 --vset=lddmc --saturation=sat -rbs,w2W,ru,hf --sylvan-sizes=20,28,20,28 --inv-bin-par --invariant=/tmp/521/inv_0_ --inv-par
TIME LIMIT: Killed by timeout after 3600 seconds
MemTotal: 16393340 kB
MemFree: 15738532 kB
After kill :
MemTotal: 16393340 kB
MemFree: 16083156 kB

BK_TIME_CONFINEMENT_REACHED

--------------------
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 ReachabilityFireability -timeout 360 -rebuildPNML
mcc2023

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="BugTracking-PT-q8m032"
export BK_EXAMINATION="ReachabilityFireability"
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 2-5348"
echo " Executing tool ltsminxred"
echo " Input is BugTracking-PT-q8m032, examination is ReachabilityFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r041-tajo-167813694700423"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/BugTracking-PT-q8m032.tgz
mv BugTracking-PT-q8m032 execution
cd execution
if [ "ReachabilityFireability" = "ReachabilityDeadlock" ] || [ "ReachabilityFireability" = "UpperBounds" ] || [ "ReachabilityFireability" = "QuasiLiveness" ] || [ "ReachabilityFireability" = "StableMarking" ] || [ "ReachabilityFireability" = "Liveness" ] || [ "ReachabilityFireability" = "OneSafe" ] || [ "ReachabilityFireability" = "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 [ "ReachabilityFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "ReachabilityFireability" != "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 "ReachabilityFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property ReachabilityFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "ReachabilityFireability.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 '' ReachabilityFireability.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "ReachabilityFireability" = "ReachabilityDeadlock" ] || [ "ReachabilityFireability" = "QuasiLiveness" ] || [ "ReachabilityFireability" = "StableMarking" ] || [ "ReachabilityFireability" = "Liveness" ] || [ "ReachabilityFireability" = "OneSafe" ] ; then
echo "FORMULA_NAME ReachabilityFireability"
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 ;