fond
Model Checking Contest 2023
13th edition, Paris, France, April 26, 2023 (at TOOLympics II)
Execution of r138-smll-167819420800463
Last Updated
May 14, 2023

About the Execution of Marcie+red for DoubleExponent-PT-003

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
5911.220 3600000.00 3630531.00 11543.10 TTTTFFFFTTTTFTFF 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.r138-smll-167819420800463.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 marciexred
Input is DoubleExponent-PT-003, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r138-smll-167819420800463
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 516K
-rw-r--r-- 1 mcc users 7.4K Feb 26 13:29 CTLCardinality.txt
-rw-r--r-- 1 mcc users 81K Feb 26 13:29 CTLCardinality.xml
-rw-r--r-- 1 mcc users 4.9K Feb 26 13:28 CTLFireability.txt
-rw-r--r-- 1 mcc users 45K Feb 26 13:28 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:40 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.2K Jan 29 11:40 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.9K Feb 25 16:01 LTLCardinality.txt
-rw-r--r-- 1 mcc users 28K Feb 25 16:01 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.2K Feb 25 16:01 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Feb 25 16:01 LTLFireability.xml
-rw-r--r-- 1 mcc users 13K Feb 26 13:30 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 145K Feb 26 13:30 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 6.5K Feb 26 13:29 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 52K Feb 26 13:29 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Feb 25 16:01 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Feb 25 16:01 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 equiv_col
-rw-r--r-- 1 mcc users 4 Mar 5 18:22 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 iscolored
-rw-r--r-- 1 mcc users 50K 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 DoubleExponent-PT-003-ReachabilityFireability-00
FORMULA_NAME DoubleExponent-PT-003-ReachabilityFireability-01
FORMULA_NAME DoubleExponent-PT-003-ReachabilityFireability-02
FORMULA_NAME DoubleExponent-PT-003-ReachabilityFireability-03
FORMULA_NAME DoubleExponent-PT-003-ReachabilityFireability-04
FORMULA_NAME DoubleExponent-PT-003-ReachabilityFireability-05
FORMULA_NAME DoubleExponent-PT-003-ReachabilityFireability-06
FORMULA_NAME DoubleExponent-PT-003-ReachabilityFireability-07
FORMULA_NAME DoubleExponent-PT-003-ReachabilityFireability-08
FORMULA_NAME DoubleExponent-PT-003-ReachabilityFireability-09
FORMULA_NAME DoubleExponent-PT-003-ReachabilityFireability-10
FORMULA_NAME DoubleExponent-PT-003-ReachabilityFireability-11
FORMULA_NAME DoubleExponent-PT-003-ReachabilityFireability-12
FORMULA_NAME DoubleExponent-PT-003-ReachabilityFireability-13
FORMULA_NAME DoubleExponent-PT-003-ReachabilityFireability-14
FORMULA_NAME DoubleExponent-PT-003-ReachabilityFireability-15

=== Now, execution of the tool begins

BK_START 1678844803383

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=marciexred
BK_EXAMINATION=ReachabilityFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=DoubleExponent-PT-003
Applying reductions before tool marcie
Invoking reducer
Running Version 202303021504
[2023-03-15 01:46:46] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityFireability, -timeout, 360, -rebuildPNML]
[2023-03-15 01:46:46] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-15 01:46:46] [INFO ] Load time of PNML (sax parser for PT used): 100 ms
[2023-03-15 01:46:46] [INFO ] Transformed 163 places.
[2023-03-15 01:46:46] [INFO ] Transformed 148 transitions.
[2023-03-15 01:46:46] [INFO ] Parsed PT model containing 163 places and 148 transitions and 417 arcs in 247 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityFireability.xml in 23 ms.
Working with output stream class java.io.PrintStream
Incomplete random walk after 10000 steps, including 327 resets, run finished after 1119 ms. (steps per millisecond=8 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1000 steps, including 30 resets, run finished after 29 ms. (steps per millisecond=34 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1000 steps, including 26 resets, run finished after 26 ms. (steps per millisecond=38 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1001 steps, including 29 resets, run finished after 32 ms. (steps per millisecond=31 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1000 steps, including 28 resets, run finished after 22 ms. (steps per millisecond=45 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1000 steps, including 27 resets, run finished after 28 ms. (steps per millisecond=35 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1000 steps, including 29 resets, run finished after 34 ms. (steps per millisecond=29 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1000 steps, including 29 resets, run finished after 44 ms. (steps per millisecond=22 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1000 steps, including 27 resets, run finished after 30 ms. (steps per millisecond=33 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1001 steps, including 29 resets, run finished after 32 ms. (steps per millisecond=31 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1001 steps, including 30 resets, run finished after 30 ms. (steps per millisecond=33 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1000 steps, including 22 resets, run finished after 28 ms. (steps per millisecond=35 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1000 steps, including 27 resets, run finished after 25 ms. (steps per millisecond=40 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1000 steps, including 26 resets, run finished after 22 ms. (steps per millisecond=45 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1001 steps, including 27 resets, run finished after 22 ms. (steps per millisecond=45 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1000 steps, including 37 resets, run finished after 28 ms. (steps per millisecond=35 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1000 steps, including 27 resets, run finished after 25 ms. (steps per millisecond=40 ) properties (out of 16) seen :0
Interrupted probabilistic random walk after 156526 steps, run timeout after 3001 ms. (steps per millisecond=52 ) properties seen :{0=1, 9=1, 13=1, 15=1}
Probabilistic random walk after 156526 steps, saw 78276 distinct states, run finished after 3006 ms. (steps per millisecond=52 ) properties seen :4
FORMULA DoubleExponent-PT-003-ReachabilityFireability-15 FALSE TECHNIQUES TOPOLOGICAL PROBABILISTIC_WALK
FORMULA DoubleExponent-PT-003-ReachabilityFireability-13 TRUE TECHNIQUES TOPOLOGICAL PROBABILISTIC_WALK
FORMULA DoubleExponent-PT-003-ReachabilityFireability-09 TRUE TECHNIQUES TOPOLOGICAL PROBABILISTIC_WALK
FORMULA DoubleExponent-PT-003-ReachabilityFireability-00 TRUE TECHNIQUES TOPOLOGICAL PROBABILISTIC_WALK
Running SMT prover for 12 properties.
// Phase 1: matrix 148 rows 163 cols
[2023-03-15 01:46:51] [INFO ] Computed 19 place invariants in 24 ms
[2023-03-15 01:46:52] [INFO ] [Real]Absence check using 5 positive place invariants in 17 ms returned sat
[2023-03-15 01:46:52] [INFO ] [Real]Absence check using 5 positive and 14 generalized place invariants in 9 ms returned sat
[2023-03-15 01:46:52] [INFO ] After 196ms SMT Verify possible using state equation in real domain returned unsat :4 sat :1 real:7
[2023-03-15 01:46:52] [INFO ] Deduced a trap composed of 42 places in 128 ms of which 17 ms to minimize.
[2023-03-15 01:46:52] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 203 ms
[2023-03-15 01:46:52] [INFO ] After 424ms SMT Verify possible using trap constraints in real domain returned unsat :4 sat :0 real:8
[2023-03-15 01:46:52] [INFO ] After 949ms SMT Verify possible using all constraints in real domain returned unsat :4 sat :0 real:8
[2023-03-15 01:46:52] [INFO ] [Nat]Absence check using 5 positive place invariants in 13 ms returned sat
[2023-03-15 01:46:52] [INFO ] [Nat]Absence check using 5 positive and 14 generalized place invariants in 10 ms returned sat
[2023-03-15 01:46:53] [INFO ] After 224ms SMT Verify possible using state equation in natural domain returned unsat :8 sat :4
[2023-03-15 01:46:53] [INFO ] Deduced a trap composed of 18 places in 113 ms of which 1 ms to minimize.
[2023-03-15 01:46:53] [INFO ] Deduced a trap composed of 16 places in 94 ms of which 1 ms to minimize.
[2023-03-15 01:46:53] [INFO ] Deduced a trap composed of 31 places in 83 ms of which 2 ms to minimize.
[2023-03-15 01:46:53] [INFO ] Deduced a trap composed of 42 places in 73 ms of which 1 ms to minimize.
[2023-03-15 01:46:53] [INFO ] Deduced a trap composed of 29 places in 78 ms of which 1 ms to minimize.
[2023-03-15 01:46:53] [INFO ] Trap strengthening (SAT) tested/added 6/5 trap constraints in 529 ms
[2023-03-15 01:46:53] [INFO ] After 889ms SMT Verify possible using trap constraints in natural domain returned unsat :8 sat :4
Attempting to minimize the solution found.
Minimization took 83 ms.
[2023-03-15 01:46:53] [INFO ] After 1206ms SMT Verify possible using all constraints in natural domain returned unsat :8 sat :4
FORMULA DoubleExponent-PT-003-ReachabilityFireability-14 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA DoubleExponent-PT-003-ReachabilityFireability-12 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA DoubleExponent-PT-003-ReachabilityFireability-11 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA DoubleExponent-PT-003-ReachabilityFireability-07 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA DoubleExponent-PT-003-ReachabilityFireability-06 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA DoubleExponent-PT-003-ReachabilityFireability-05 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA DoubleExponent-PT-003-ReachabilityFireability-03 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA DoubleExponent-PT-003-ReachabilityFireability-02 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
Fused 12 Parikh solutions to 4 different solutions.
Parikh walk visited 0 properties in 137 ms.
Support contains 8 out of 163 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 163/163 places, 148/148 transitions.
Graph (complete) has 269 edges and 163 vertex of which 158 are kept as prefixes of interest. Removing 5 places using SCC suffix rule.2 ms
Discarding 5 places :
Also discarding 0 output transitions
Drop transitions removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Discarding 1 places :
Implicit places reduction removed 1 places
Drop transitions removed 32 transitions
Trivial Post-agglo rules discarded 32 transitions
Performed 32 trivial Post agglomeration. Transition count delta: 32
Iterating post reduction 0 with 34 rules applied. Total rules applied 35 place count 157 transition count 115
Reduce places removed 32 places and 0 transitions.
Iterating post reduction 1 with 32 rules applied. Total rules applied 67 place count 125 transition count 115
Performed 5 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 5 Pre rules applied. Total rules applied 67 place count 125 transition count 110
Deduced a syphon composed of 5 places in 4 ms
Reduce places removed 5 places and 0 transitions.
Iterating global reduction 2 with 10 rules applied. Total rules applied 77 place count 120 transition count 110
Performed 26 Post agglomeration using F-continuation condition.Transition count delta: 26
Deduced a syphon composed of 26 places in 1 ms
Reduce places removed 26 places and 0 transitions.
Iterating global reduction 2 with 52 rules applied. Total rules applied 129 place count 94 transition count 84
Performed 3 Post agglomeration using F-continuation condition.Transition count delta: 0
Deduced a syphon composed of 3 places in 0 ms
Reduce places removed 3 places and 0 transitions.
Iterating global reduction 2 with 6 rules applied. Total rules applied 135 place count 91 transition count 84
Free-agglomeration rule (complex) applied 10 times.
Iterating global reduction 2 with 10 rules applied. Total rules applied 145 place count 91 transition count 74
Reduce places removed 10 places and 0 transitions.
Iterating post reduction 2 with 10 rules applied. Total rules applied 155 place count 81 transition count 74
Partial Free-agglomeration rule applied 10 times.
Drop transitions removed 10 transitions
Iterating global reduction 3 with 10 rules applied. Total rules applied 165 place count 81 transition count 74
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 3 with 1 rules applied. Total rules applied 166 place count 80 transition count 73
Applied a total of 166 rules in 92 ms. Remains 80 /163 variables (removed 83) and now considering 73/148 (removed 75) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 93 ms. Remains : 80/163 places, 73/148 transitions.
Incomplete random walk after 10000 steps, including 993 resets, run finished after 285 ms. (steps per millisecond=35 ) properties (out of 4) seen :0
Incomplete Best-First random walk after 10000 steps, including 655 resets, run finished after 182 ms. (steps per millisecond=54 ) properties (out of 4) seen :0
Incomplete Best-First random walk after 10000 steps, including 659 resets, run finished after 178 ms. (steps per millisecond=56 ) properties (out of 4) seen :0
Incomplete Best-First random walk after 10000 steps, including 644 resets, run finished after 100 ms. (steps per millisecond=100 ) properties (out of 4) seen :0
Incomplete Best-First random walk after 10000 steps, including 653 resets, run finished after 108 ms. (steps per millisecond=92 ) properties (out of 4) seen :0
Finished probabilistic random walk after 113558 steps, run visited all 4 properties in 1224 ms. (steps per millisecond=92 )
Probabilistic random walk after 113558 steps, saw 56822 distinct states, run finished after 1228 ms. (steps per millisecond=92 ) properties seen :4
FORMULA DoubleExponent-PT-003-ReachabilityFireability-10 TRUE TECHNIQUES TOPOLOGICAL PROBABILISTIC_WALK
FORMULA DoubleExponent-PT-003-ReachabilityFireability-08 TRUE TECHNIQUES TOPOLOGICAL PROBABILISTIC_WALK
FORMULA DoubleExponent-PT-003-ReachabilityFireability-04 FALSE TECHNIQUES TOPOLOGICAL PROBABILISTIC_WALK
FORMULA DoubleExponent-PT-003-ReachabilityFireability-01 TRUE TECHNIQUES TOPOLOGICAL PROBABILISTIC_WALK
All properties solved without resorting to model-checking.
Total runtime 9595 ms.
timeout --kill-after=10s --signal=SIGINT 1m for testing only

Marcie built on Linux at 2019-11-18.
A model checker for Generalized Stochastic Petri nets

authors: Alex Tovchigrechko (IDD package and CTL model checking)

Martin Schwarick (Symbolic numerical analysis and CSL model checking)

Christian Rohr (Simulative and approximative numerical model checking)

marcie@informatik.tu-cottbus.de

called as: /home/mcc/BenchKit/bin//../reducer/bin//../../marcie/bin/marcie --net-file=model.pnml --mcc-file=ReachabilityFireability.xml --memory=6 --mcc-mode

parse successfull
net created successfully

Net: DoubleExponent_PT_003
(NrP: 163 NrTr: 148 NrArc: 417)

parse formulas
formulas created successfully
place and transition orderings generation:0m 0.004sec

net check time: 0m 0.000sec

init dd package: 0m 3.577sec

TIME LIMIT: Killed by timeout after 3600 seconds
MemTotal: 16393232 kB
MemFree: 10237796 kB
After kill :
MemTotal: 16393232 kB
MemFree: 16100272 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
check for maximal unmarked siphon
ok
check for constant places
ok
check if there are places and transitions
ok
check if there are transitions without pre-places
ok
check if at least one transition is enabled in m0
ok
check if there are transitions that can never fire
ok


initing FirstDep: 0m 0.000sec

6471 7244 7676 8047 8537 8778 9228 9379 9659 9800 10217 10237

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="DoubleExponent-PT-003"
export BK_EXAMINATION="ReachabilityFireability"
export BK_TOOL="marciexred"
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 marciexred"
echo " Input is DoubleExponent-PT-003, 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 r138-smll-167819420800463"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/DoubleExponent-PT-003.tgz
mv DoubleExponent-PT-003 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 ;