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.r275-smll-167863547400163.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)
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=====================================================================
Generated by BenchKit 2-5348
Executing tool itstools
Input is NoC3x3-PT-3A, examination is StableMarking
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r275-smll-167863547400163
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 548K
-rw-r--r-- 1 mcc users 6.1K Feb 26 10:09 CTLCardinality.txt
-rw-r--r-- 1 mcc users 61K Feb 26 10:09 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.2K Feb 26 10:08 CTLFireability.txt
-rw-r--r-- 1 mcc users 48K Feb 26 10:08 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:40 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 3.5K Feb 25 16:28 LTLCardinality.txt
-rw-r--r-- 1 mcc users 25K Feb 25 16:28 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.1K Feb 25 16:28 LTLFireability.txt
-rw-r--r-- 1 mcc users 16K Feb 25 16:28 LTLFireability.xml
-rw-r--r-- 1 mcc users 11K Feb 26 10:11 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 114K Feb 26 10:11 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 7.9K Feb 26 10:10 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 68K Feb 26 10:10 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.5K Feb 25 16:28 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K Feb 25 16:28 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 5 18:23 equiv_col
-rw-r--r-- 1 mcc users 3 Mar 5 18:23 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:23 iscolored
-rw-r--r-- 1 mcc users 133K 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

FORMULA_NAME StableMarking

=== Now, execution of the tool begins

BK_START 1678862562139

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=StableMarking
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=1800
BK_INPUT=NoC3x3-PT-3A
Not applying reductions.
Model is PT
StableMarking PT
Running Version 202303021504
[2023-03-15 06:42:44] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, StableMarking, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 1800]
[2023-03-15 06:42:44] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-15 06:42:45] [INFO ] Load time of PNML (sax parser for PT used): 117 ms
[2023-03-15 06:42:45] [INFO ] Transformed 370 places.
[2023-03-15 06:42:45] [INFO ] Transformed 450 transitions.
[2023-03-15 06:42:45] [INFO ] Found NUPN structural information;
[2023-03-15 06:42:45] [INFO ] Parsed PT model containing 370 places and 450 transitions and 1773 arcs in 227 ms.
Structural test allowed to assert that 67 places are NOT stable. Took 10 ms.
Ensure Unique test removed 1 transitions
Reduce redundant transitions removed 1 transitions.
[2023-03-15 06:42:45] [INFO ] Flatten gal took : 230 ms
Incomplete random walk after 10000 steps, including 2 resets, run finished after 776 ms. (steps per millisecond=12 ) properties (out of 303) seen :298
[2023-03-15 06:42:46] [INFO ] Flatten gal took : 130 ms
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 29 ms. (steps per millisecond=344 ) properties (out of 5) seen :4
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 20 ms. (steps per millisecond=500 ) properties (out of 1) seen :0
Running SMT prover for 1 properties.
[2023-03-15 06:42:46] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality9319719708775832064.gal : 49 ms
[2023-03-15 06:42:46] [INFO ] Flow matrix only has 394 transitions (discarded 55 similar events)
// Phase 1: matrix 394 rows 370 cols
[2023-03-15 06:42:46] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality14529128189441769952.prop : 3 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/ReachabilityCardinality9319719708775832064.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality14529128189441769952.prop' '--nowitness' '--gen-order' 'FOLLOW'
[2023-03-15 06:42:46] [INFO ] Computed 127 place invariants in 49 ms

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
Loading property file /tmp/ReachabilityCardinality14529128189441769952.prop.
Invariant property smplace_20 does not hold.
Invariant property smplace_19 does not hold.
Invariant property smplace_10 does not hold.
Invariant property smplace_9 does not hold.
Invariant property smplace_5 does not hold.
Invariant property smplace_4 does not hold.
SDD proceeding with computation,297 properties remain. new max is 2
SDD size :2 after 8
SDD proceeding with computation,297 properties remain. new max is 4
SDD size :8 after 9
Invariant property smplace_47 does not hold.
SDD proceeding with computation,296 properties remain. new max is 4
SDD size :9 after 17
Invariant property smplace_46 does not hold.
Invariant property smplace_45 does not hold.
Invariant property smplace_44 does not hold.
Invariant property smplace_40 does not hold.
Invariant property smplace_39 does not hold.
Invariant property smplace_26 does not hold.
Invariant property smplace_25 does not hold.
SDD proceeding with computation,289 properties remain. new max is 4
[2023-03-15 06:42:46] [INFO ] After 399ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
SDD size :17 after 73
SDD proceeding with computation,289 properties remain. new max is 8
SDD size :73 after 113
Invariant property smplace_64 does not hold.
Invariant property smplace_63 does not hold.
Invariant property smplace_62 does not hold.
Invariant property smplace_61 does not hold.
Invariant property smplace_42 does not hold.
Invariant property smplace_41 does not hold.
Invariant property smplace_35 does not hold.
Invariant property smplace_34 does not hold.
Invariant property smplace_28 does not hold.
Invariant property smplace_27 does not hold.
Invariant property smplace_14 does not hold.
Invariant property smplace_13 does not hold.
Invariant property smplace_12 does not hold.
Invariant property smplace_8 does not hold.
Invariant property smplace_7 does not hold.
SDD proceeding with computation,274 properties remain. new max is 8
SDD size :113 after 567
SDD proceeding with computation,274 properties remain. new max is 16
SDD size :567 after 579
SDD proceeding with computation,274 properties remain. new max is 32
SDD size :579 after 917
[2023-03-15 06:42:46] [INFO ] [Nat]Absence check using 76 positive place invariants in 29 ms returned sat
[2023-03-15 06:42:46] [INFO ] [Nat]Absence check using 76 positive and 51 generalized place invariants in 15 ms returned sat
SDD proceeding with computation,274 properties remain. new max is 64
SDD size :917 after 5423
Invariant property smplace_88 does not hold.
Invariant property smplace_87 does not hold.
Invariant property smplace_86 does not hold.
Invariant property smplace_79 does not hold.
Invariant property smplace_78 does not hold.
Invariant property smplace_77 does not hold.
Invariant property smplace_75 does not hold.
Invariant property smplace_74 does not hold.
Invariant property smplace_70 does not hold.
Invariant property smplace_69 does not hold.
Invariant property smplace_68 does not hold.
Invariant property smplace_67 does not hold.
Invariant property smplace_59 does not hold.
SDD proceeding with computation,261 properties remain. new max is 64
SDD size :5423 after 143751
Invariant property smplace_58 does not hold.
Invariant property smplace_57 does not hold.
Invariant property smplace_56 does not hold.
Invariant property smplace_31 does not hold.
Invariant property smplace_30 does not hold.
Invariant property smplace_24 does not hold.
Invariant property smplace_23 does not hold.
SDD proceeding with computation,254 properties remain. new max is 64
SDD size :143751 after 1.21146e+06
Invariant property smplace_114 does not hold.
SDD proceeding with computation,253 properties remain. new max is 64
SDD size :1.21146e+06 after 2.39174e+06
[2023-03-15 06:42:47] [INFO ] After 223ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2023-03-15 06:42:47] [INFO ] State equation strengthened by 12 read => feed constraints.
SDD proceeding with computation,253 properties remain. new max is 128
SDD size :2.39174e+06 after 2.63957e+06
[2023-03-15 06:42:47] [INFO ] After 40ms SMT Verify possible using 12 Read/Feed constraints in natural domain returned unsat :0 sat :1
Invariant property smplace_130 does not hold.
Invariant property smplace_129 does not hold.
Invariant property smplace_128 does not hold.
Invariant property smplace_127 does not hold.
Invariant property smplace_113 does not hold.
Invariant property smplace_112 does not hold.
Invariant property smplace_110 does not hold.
Invariant property smplace_109 does not hold.
Invariant property smplace_106 does not hold.
Invariant property smplace_105 does not hold.
Invariant property smplace_103 does not hold.
Invariant property smplace_102 does not hold.
Invariant property smplace_101 does not hold.
Invariant property smplace_100 does not hold.
Invariant property smplace_96 does not hold.
Invariant property smplace_95 does not hold.
SDD proceeding with computation,237 properties remain. new max is 128
SDD size :2.63957e+06 after 8.99638e+07
[2023-03-15 06:42:47] [INFO ] After 98ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
Attempting to minimize the solution found.
Minimization took 30 ms.
[2023-03-15 06:42:47] [INFO ] After 594ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
Invariant property smplace_17 does not hold.
Invariant property smplace_16 does not hold.
Invariant property smplace_3 does not hold.
Invariant property smplace_2 does not hold.
SDD proceeding with computation,233 properties remain. new max is 128
SDD size :8.99638e+07 after 9.42102e+07
Parikh walk visited 0 properties in 40 ms.
Support contains 1 out of 370 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 370/370 places, 449/449 transitions.
Ensure Unique test removed 18 places
Drop transitions removed 9 transitions
Reduce isomorphic transitions removed 9 transitions.
Drop transitions removed 19 transitions
Trivial Post-agglo rules discarded 19 transitions
Performed 19 trivial Post agglomeration. Transition count delta: 19
Iterating post reduction 0 with 46 rules applied. Total rules applied 46 place count 352 transition count 421
Reduce places removed 19 places and 0 transitions.
Iterating post reduction 1 with 19 rules applied. Total rules applied 65 place count 333 transition count 421
Discarding 113 places :
Symmetric choice reduction at 2 with 113 rule applications. Total rules 178 place count 220 transition count 285
Ensure Unique test removed 43 places
Iterating global reduction 2 with 156 rules applied. Total rules applied 334 place count 177 transition count 285
Ensure Unique test removed 71 transitions
Reduce isomorphic transitions removed 71 transitions.
Drop transitions removed 43 transitions
Trivial Post-agglo rules discarded 43 transitions
Performed 43 trivial Post agglomeration. Transition count delta: 43
Iterating post reduction 2 with 114 rules applied. Total rules applied 448 place count 177 transition count 171
Reduce places removed 43 places and 0 transitions.
Iterating post reduction 3 with 43 rules applied. Total rules applied 491 place count 134 transition count 171
SDD proceeding with computation,233 properties remain. new max is 256
Drop transitions removed 24 transitions
Redundant transition composition rules discarded 24 transitions
Iterating global reduction 4 with 24 rules applied. Total rules applied 515 place count 134 transition count 147
Reduce places removed 9 places and 0 transitions.
Iterating post reduction 4 with 9 rules applied. Total rules applied 524 place count 125 transition count 147
SDD size :9.42102e+07 after 4.31278e+08
Partial Free-agglomeration rule applied 31 times.
Drop transitions removed 31 transitions
Iterating global reduction 5 with 31 rules applied. Total rules applied 555 place count 125 transition count 147
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 5 with 1 rules applied. Total rules applied 556 place count 124 transition count 146
Reduce places removed 9 places and 0 transitions.
Iterating post reduction 5 with 9 rules applied. Total rules applied 565 place count 115 transition count 146
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 6 with 1 Pre rules applied. Total rules applied 565 place count 115 transition count 145
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 6 with 3 rules applied. Total rules applied 568 place count 113 transition count 145
Drop transitions removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 6 with 1 rules applied. Total rules applied 569 place count 113 transition count 144
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 7 with 1 Pre rules applied. Total rules applied 569 place count 113 transition count 143
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 7 with 3 rules applied. Total rules applied 572 place count 111 transition count 143
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 7 with 2 rules applied. Total rules applied 574 place count 111 transition count 141
Applied a total of 574 rules in 112 ms. Remains 111 /370 variables (removed 259) and now considering 141/449 (removed 308) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 112 ms. Remains : 111/370 places, 141/449 transitions.
Finished random walk after 70 steps, including 0 resets, run visited all 1 properties in 2 ms. (steps per millisecond=35 )
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)
Able to resolve query StableMarking after proving 304 properties.
FORMULA StableMarking FALSE TECHNIQUES RANDOM_WALK MARKED_SUFFIX_TEST BESTFIRST_WALK TOPOLOGICAL
Total runtime 2442 ms.
Invariant property smplace_176 does not hold.
SDD proceeding with computation,232 properties remain. new max is 256
SDD size :4.31278e+08 after 1.93449e+09
Invariant property smplace_175 does not hold.
Invariant property smplace_174 does not hold.
Invariant property smplace_173 does not hold.
Invariant property smplace_172 does not hold.
Invariant property smplace_171 does not hold.
Invariant property smplace_170 does not hold.
Invariant property smplace_169 does not hold.
Invariant property smplace_163 does not hold.
Invariant property smplace_162 does not hold.
Invariant property smplace_154 does not hold.
Invariant property smplace_153 does not hold.
Invariant property smplace_143 does not hold.
Invariant property smplace_142 does not hold.
Invariant property smplace_121 does not hold.
Invariant property smplace_120 does not hold.
Invariant property smplace_119 does not hold.
Invariant property smplace_118 does not hold.
Invariant property smplace_117 does not hold.
Invariant property smplace_116 does not hold.
Invariant property smplace_108 does not hold.
Invariant property smplace_107 does not hold.
Invariant property smplace_92 does not hold.
Invariant property smplace_91 does not hold.
SDD proceeding with computation,209 properties remain. new max is 256
SDD size :1.93449e+09 after 9.52282e+10
Invariant property smplace_183 does not hold.
SDD proceeding with computation,208 properties remain. new max is 256
SDD size :9.52282e+10 after 3.32563e+11
SDD proceeding with computation,208 properties remain. new max is 512
SDD size :3.32563e+11 after 5.41549e+11
Invariant property smplace_182 does not hold.
Invariant property smplace_181 does not hold.
Invariant property smplace_180 does not hold.
Invariant property smplace_179 does not hold.
Invariant property smplace_178 does not hold.
Invariant property smplace_165 does not hold.
Invariant property smplace_164 does not hold.
Invariant property smplace_156 does not hold.
Invariant property smplace_155 does not hold.
Invariant property smplace_134 does not hold.
Invariant property smplace_133 does not hold.
Invariant property smplace_54 does not hold.
Invariant property smplace_53 does not hold.
Invariant property smplace_52 does not hold.
Invariant property smplace_51 does not hold.
Invariant property smplace_50 does not hold.
Invariant property smplace_49 does not hold.
Invariant property smplace_38 does not hold.
Invariant property smplace_37 does not hold.
Invariant property smplace_33 does not hold.
Invariant property smplace_32 does not hold.
SDD proceeding with computation,187 properties remain. new max is 512
SDD size :5.41549e+11 after 3.26642e+12
SDD proceeding with computation,187 properties remain. new max is 1024
SDD size :3.26642e+12 after 9.85794e+12

BK_STOP 1678862568617

--------------------
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
+ [[ StableMarking = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution StableMarking -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 1800
+ 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//
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202303021504.jar
++ perl -pe 's/.*\.//g'
+ VERSION=202303021504
+ echo 'Running Version 202303021504'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination StableMarking -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 1800

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="NoC3x3-PT-3A"
export BK_EXAMINATION="StableMarking"
export BK_TOOL="itstools"
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 itstools"
echo " Input is NoC3x3-PT-3A, examination is StableMarking"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r275-smll-167863547400163"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/NoC3x3-PT-3A.tgz
mv NoC3x3-PT-3A execution
cd execution
if [ "StableMarking" = "ReachabilityDeadlock" ] || [ "StableMarking" = "UpperBounds" ] || [ "StableMarking" = "QuasiLiveness" ] || [ "StableMarking" = "StableMarking" ] || [ "StableMarking" = "Liveness" ] || [ "StableMarking" = "OneSafe" ] || [ "StableMarking" = "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 [ "StableMarking" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "StableMarking" != "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 "StableMarking.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property StableMarking.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "StableMarking.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 '' StableMarking.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "StableMarking" = "ReachabilityDeadlock" ] || [ "StableMarking" = "QuasiLiveness" ] || [ "StableMarking" = "StableMarking" ] || [ "StableMarking" = "Liveness" ] || [ "StableMarking" = "OneSafe" ] ; then
echo "FORMULA_NAME StableMarking"
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 ;