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.r261-smll-167863536600615.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 itstools
Input is Peterson-PT-3, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r261-smll-167863536600615
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 1.6M
-rw-r--r-- 1 mcc users 29K Feb 25 22:09 CTLCardinality.txt
-rw-r--r-- 1 mcc users 157K Feb 25 22:09 CTLCardinality.xml
-rw-r--r-- 1 mcc users 40K Feb 25 22:05 CTLFireability.txt
-rw-r--r-- 1 mcc users 194K Feb 25 22:05 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 15K Feb 25 16:31 LTLCardinality.txt
-rw-r--r-- 1 mcc users 50K Feb 25 16:31 LTLCardinality.xml
-rw-r--r-- 1 mcc users 11K Feb 25 16:31 LTLFireability.txt
-rw-r--r-- 1 mcc users 44K Feb 25 16:31 LTLFireability.xml
-rw-r--r-- 1 mcc users 93K Feb 25 22:15 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 439K Feb 25 22:15 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 58K Feb 25 22:11 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 283K Feb 25 22:11 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 4.5K Feb 25 16:31 UpperBounds.txt
-rw-r--r-- 1 mcc users 11K Feb 25 16:31 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 5 18:23 equiv_col
-rw-r--r-- 1 mcc users 2 Mar 5 18:23 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:23 iscolored
-rw-r--r-- 1 mcc users 143K Mar 5 18:23 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 Peterson-PT-3-ReachabilityFireability-00
FORMULA_NAME Peterson-PT-3-ReachabilityFireability-01
FORMULA_NAME Peterson-PT-3-ReachabilityFireability-02
FORMULA_NAME Peterson-PT-3-ReachabilityFireability-03
FORMULA_NAME Peterson-PT-3-ReachabilityFireability-04
FORMULA_NAME Peterson-PT-3-ReachabilityFireability-05
FORMULA_NAME Peterson-PT-3-ReachabilityFireability-06
FORMULA_NAME Peterson-PT-3-ReachabilityFireability-07
FORMULA_NAME Peterson-PT-3-ReachabilityFireability-08
FORMULA_NAME Peterson-PT-3-ReachabilityFireability-09
FORMULA_NAME Peterson-PT-3-ReachabilityFireability-10
FORMULA_NAME Peterson-PT-3-ReachabilityFireability-11
FORMULA_NAME Peterson-PT-3-ReachabilityFireability-12
FORMULA_NAME Peterson-PT-3-ReachabilityFireability-13
FORMULA_NAME Peterson-PT-3-ReachabilityFireability-14
FORMULA_NAME Peterson-PT-3-ReachabilityFireability-15

=== Now, execution of the tool begins

BK_START 1679045028016

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=itstools
BK_EXAMINATION=ReachabilityFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=Peterson-PT-3
Not applying reductions.
Model is PT
ReachabilityFireability PT
Running Version 202303021504
[2023-03-17 09:23:51] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityFireability, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2023-03-17 09:23:51] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-17 09:23:51] [INFO ] Load time of PNML (sax parser for PT used): 144 ms
[2023-03-17 09:23:51] [INFO ] Transformed 244 places.
[2023-03-17 09:23:51] [INFO ] Transformed 332 transitions.
[2023-03-17 09:23:51] [INFO ] Found NUPN structural information;
[2023-03-17 09:23:51] [INFO ] Completing missing partition info from NUPN : creating a component with [TestAlone_1_2_3, TestAlone_2_2_3]
[2023-03-17 09:23:51] [INFO ] Parsed PT model containing 244 places and 332 transitions and 1016 arcs in 319 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityFireability.xml in 60 ms.
Working with output stream class java.io.PrintStream
Initial state reduction rules removed 1 formulas.
FORMULA Peterson-PT-3-ReachabilityFireability-06 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Peterson-PT-3-ReachabilityFireability-07 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2023-03-17 09:23:52] [INFO ] Flatten gal took : 187 ms
[2023-03-17 09:23:52] [INFO ] Flatten gal took : 98 ms
[2023-03-17 09:23:52] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality4202264989559676769.gal : 32 ms
[2023-03-17 09:23:52] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality15506600698602786780.prop : 15 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202303021504/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality4202264989559676769.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality15506600698602786780.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202303021504/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
Incomplete random walk after 10000 steps, including 2 resets, run finished after 994 ms. (steps per millisecond=10 ) properties (out of 14) seen :5
FORMULA Peterson-PT-3-ReachabilityFireability-14 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA Peterson-PT-3-ReachabilityFireability-05 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA Peterson-PT-3-ReachabilityFireability-04 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA Peterson-PT-3-ReachabilityFireability-01 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA Peterson-PT-3-ReachabilityFireability-00 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
Loading property file /tmp/ReachabilityCardinality15506600698602786780.prop.
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 352 ms. (steps per millisecond=28 ) properties (out of 9) seen :1
FORMULA Peterson-PT-3-ReachabilityFireability-02 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
SDD proceeding with computation,14 properties remain. new max is 4
SDD size :1 after 2
SDD proceeding with computation,14 properties remain. new max is 8
SDD size :2 after 7
SDD proceeding with computation,14 properties remain. new max is 16
SDD size :7 after 8
SDD proceeding with computation,14 properties remain. new max is 32
SDD size :8 after 9
SDD proceeding with computation,14 properties remain. new max is 64
SDD size :9 after 39
SDD proceeding with computation,14 properties remain. new max is 128
SDD size :39 after 53
SDD proceeding with computation,14 properties remain. new max is 256
SDD size :53 after 116
SDD proceeding with computation,14 properties remain. new max is 512
SDD size :116 after 213
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 356 ms. (steps per millisecond=28 ) properties (out of 8) seen :2
FORMULA Peterson-PT-3-ReachabilityFireability-12 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Peterson-PT-3-ReachabilityFireability-03 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 65 ms. (steps per millisecond=153 ) properties (out of 6) seen :0
SDD proceeding with computation,14 properties remain. new max is 1024
SDD size :213 after 1126
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 65 ms. (steps per millisecond=153 ) properties (out of 6) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 84 ms. (steps per millisecond=119 ) properties (out of 6) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 68 ms. (steps per millisecond=147 ) properties (out of 6) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 64 ms. (steps per millisecond=156 ) properties (out of 6) seen :0
Reachability property Peterson-PT-3-ReachabilityFireability-02 is true.
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 59 ms. (steps per millisecond=169 ) properties (out of 6) seen :0
Running SMT prover for 6 properties.
[2023-03-17 09:23:54] [INFO ] Flow matrix only has 308 transitions (discarded 24 similar events)
// Phase 1: matrix 308 rows 244 cols
[2023-03-17 09:23:54] [INFO ] Computed 15 place invariants in 35 ms
SDD proceeding with computation,13 properties remain. new max is 1024
SDD size :1126 after 4159
[2023-03-17 09:23:54] [INFO ] After 443ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:6
[2023-03-17 09:23:54] [INFO ] [Nat]Absence check using 11 positive place invariants in 10 ms returned sat
[2023-03-17 09:23:54] [INFO ] [Nat]Absence check using 11 positive and 4 generalized place invariants in 2 ms returned sat
SDD proceeding with computation,13 properties remain. new max is 2048
SDD size :4159 after 6369
[2023-03-17 09:23:55] [INFO ] After 205ms SMT Verify possible using state equation in natural domain returned unsat :3 sat :3
[2023-03-17 09:23:55] [INFO ] State equation strengthened by 57 read => feed constraints.
Invariant property Peterson-PT-3-ReachabilityFireability-14 does not hold.
[2023-03-17 09:23:55] [INFO ] After 73ms SMT Verify possible using 57 Read/Feed constraints in natural domain returned unsat :3 sat :3
[2023-03-17 09:23:55] [INFO ] Deduced a trap composed of 14 places in 165 ms of which 6 ms to minimize.
[2023-03-17 09:23:55] [INFO ] Deduced a trap composed of 9 places in 147 ms of which 1 ms to minimize.
[2023-03-17 09:23:55] [INFO ] Deduced a trap composed of 9 places in 130 ms of which 1 ms to minimize.
[2023-03-17 09:23:55] [INFO ] Deduced a trap composed of 9 places in 140 ms of which 1 ms to minimize.
[2023-03-17 09:23:56] [INFO ] Deduced a trap composed of 34 places in 120 ms of which 1 ms to minimize.
[2023-03-17 09:23:56] [INFO ] Deduced a trap composed of 34 places in 114 ms of which 0 ms to minimize.
[2023-03-17 09:23:56] [INFO ] Trap strengthening (SAT) tested/added 7/6 trap constraints in 933 ms
[2023-03-17 09:23:56] [INFO ] Deduced a trap composed of 12 places in 109 ms of which 0 ms to minimize.
[2023-03-17 09:23:56] [INFO ] Deduced a trap composed of 34 places in 105 ms of which 1 ms to minimize.
SDD proceeding with computation,12 properties remain. new max is 2048
SDD size :6369 after 19043
[2023-03-17 09:23:56] [INFO ] Deduced a trap composed of 26 places in 91 ms of which 1 ms to minimize.
[2023-03-17 09:23:56] [INFO ] Deduced a trap composed of 29 places in 84 ms of which 0 ms to minimize.
[2023-03-17 09:23:56] [INFO ] Deduced a trap composed of 45 places in 73 ms of which 0 ms to minimize.
[2023-03-17 09:23:56] [INFO ] Deduced a trap composed of 26 places in 87 ms of which 0 ms to minimize.
[2023-03-17 09:23:56] [INFO ] Trap strengthening procedure managed to obtain unsat after adding 6 trap constraints in 646 ms
[2023-03-17 09:23:56] [INFO ] Deduced a trap composed of 27 places in 57 ms of which 1 ms to minimize.
[2023-03-17 09:23:57] [INFO ] Deduced a trap composed of 16 places in 91 ms of which 1 ms to minimize.
[2023-03-17 09:23:57] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 201 ms
[2023-03-17 09:23:57] [INFO ] After 1905ms SMT Verify possible using trap constraints in natural domain returned unsat :4 sat :2
Attempting to minimize the solution found.
Minimization took 46 ms.
[2023-03-17 09:23:57] [INFO ] After 2369ms SMT Verify possible using all constraints in natural domain returned unsat :4 sat :2
FORMULA Peterson-PT-3-ReachabilityFireability-15 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA Peterson-PT-3-ReachabilityFireability-11 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA Peterson-PT-3-ReachabilityFireability-10 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA Peterson-PT-3-ReachabilityFireability-08 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
Fused 6 Parikh solutions to 2 different solutions.
Parikh walk visited 0 properties in 6 ms.
Support contains 12 out of 244 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 244/244 places, 332/332 transitions.
Drop transitions removed 83 transitions
Trivial Post-agglo rules discarded 83 transitions
Performed 83 trivial Post agglomeration. Transition count delta: 83
Iterating post reduction 0 with 83 rules applied. Total rules applied 83 place count 244 transition count 249
Reduce places removed 83 places and 0 transitions.
Performed 5 Post agglomeration using F-continuation condition.Transition count delta: 5
Iterating post reduction 1 with 88 rules applied. Total rules applied 171 place count 161 transition count 244
Reduce places removed 5 places and 0 transitions.
Iterating post reduction 2 with 5 rules applied. Total rules applied 176 place count 156 transition count 244
Performed 42 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 42 Pre rules applied. Total rules applied 176 place count 156 transition count 202
Deduced a syphon composed of 42 places in 1 ms
Reduce places removed 42 places and 0 transitions.
Iterating global reduction 3 with 84 rules applied. Total rules applied 260 place count 114 transition count 202
Performed 12 Post agglomeration using F-continuation condition.Transition count delta: 12
Deduced a syphon composed of 12 places in 1 ms
Reduce places removed 12 places and 0 transitions.
Iterating global reduction 3 with 24 rules applied. Total rules applied 284 place count 102 transition count 190
Applied a total of 284 rules in 52 ms. Remains 102 /244 variables (removed 142) and now considering 190/332 (removed 142) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 53 ms. Remains : 102/244 places, 190/332 transitions.
Incomplete random walk after 10000 steps, including 2 resets, run finished after 104 ms. (steps per millisecond=96 ) properties (out of 2) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 29 ms. (steps per millisecond=344 ) properties (out of 2) 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 2) seen :0
Finished probabilistic random walk after 242300 steps, run visited all 2 properties in 661 ms. (steps per millisecond=366 )
Probabilistic random walk after 242300 steps, saw 48688 distinct states, run finished after 661 ms. (steps per millisecond=366 ) properties seen :2
FORMULA Peterson-PT-3-ReachabilityFireability-13 FALSE TECHNIQUES TOPOLOGICAL PROBABILISTIC_WALK
FORMULA Peterson-PT-3-ReachabilityFireability-09 FALSE TECHNIQUES TOPOLOGICAL PROBABILISTIC_WALK
ITS runner failed with exception null
java.lang.InterruptedException
at java.base/java.lang.Object.wait(Native Method)
at java.base/java.lang.Thread.join(Thread.java:1304)
at java.base/java.lang.Thread.join(Thread.java:1372)
at fr.lip6.move.gal.application.runner.AbstractRunner.join(AbstractRunner.java:27)
at fr.lip6.move.gal.application.runner.its.ITSRunner.join(ITSRunner.java:177)
at fr.lip6.move.gal.application.solver.global.GlobalPropertySolver.verifyWithSDD(GlobalPropertySolver.java:675)
at fr.lip6.move.gal.application.solver.ReachabilitySolver.lambda$2(ReachabilitySolver.java:63)
at java.base/java.lang.Thread.run(Thread.java:833)
All properties solved without resorting to model-checking.
Total runtime 6539 ms.
SDD proceeding with computation,12 properties remain. new max is 4096
SDD size :19043 after 29140

BK_STOP 1679045039240

--------------------
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
+ [[ ReachabilityFireability = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution ReachabilityFireability -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
+ 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//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202303021504.jar
+ VERSION=202303021504
+ echo 'Running Version 202303021504'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination ReachabilityFireability -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="Peterson-PT-3"
export BK_EXAMINATION="ReachabilityFireability"
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 2-5348"
echo " Executing tool itstools"
echo " Input is Peterson-PT-3, 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 r261-smll-167863536600615"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/Peterson-PT-3.tgz
mv Peterson-PT-3 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 ;