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.r293-tall-167873945900791.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 PolyORBNT-PT-S10J80, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r293-tall-167873945900791
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 25M
-rw-r--r-- 1 mcc users 30K Feb 26 01:31 CTLCardinality.txt
-rw-r--r-- 1 mcc users 171K Feb 26 01:31 CTLCardinality.xml
-rw-r--r-- 1 mcc users 786K Feb 26 01:03 CTLFireability.txt
-rw-r--r-- 1 mcc users 3.0M Feb 26 01:03 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 34K Feb 25 16:36 LTLCardinality.txt
-rw-r--r-- 1 mcc users 96K Feb 25 16:36 LTLCardinality.xml
-rw-r--r-- 1 mcc users 46K Feb 25 16:36 LTLFireability.txt
-rw-r--r-- 1 mcc users 181K Feb 25 16:36 LTLFireability.xml
-rw-r--r-- 1 mcc users 38K Feb 26 03:16 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 197K Feb 26 03:16 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 1.2M Feb 26 02:49 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 4.7M Feb 26 02:49 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 4.2K Feb 25 16:36 UpperBounds.txt
-rw-r--r-- 1 mcc users 8.0K Feb 25 16:36 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 5 18:23 equiv_col
-rw-r--r-- 1 mcc users 7 Mar 5 18:23 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:23 iscolored
-rw-r--r-- 1 mcc users 14M 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 PolyORBNT-PT-S10J80-ReachabilityFireability-00
FORMULA_NAME PolyORBNT-PT-S10J80-ReachabilityFireability-01
FORMULA_NAME PolyORBNT-PT-S10J80-ReachabilityFireability-02
FORMULA_NAME PolyORBNT-PT-S10J80-ReachabilityFireability-03
FORMULA_NAME PolyORBNT-PT-S10J80-ReachabilityFireability-04
FORMULA_NAME PolyORBNT-PT-S10J80-ReachabilityFireability-05
FORMULA_NAME PolyORBNT-PT-S10J80-ReachabilityFireability-06
FORMULA_NAME PolyORBNT-PT-S10J80-ReachabilityFireability-07
FORMULA_NAME PolyORBNT-PT-S10J80-ReachabilityFireability-08
FORMULA_NAME PolyORBNT-PT-S10J80-ReachabilityFireability-09
FORMULA_NAME PolyORBNT-PT-S10J80-ReachabilityFireability-10
FORMULA_NAME PolyORBNT-PT-S10J80-ReachabilityFireability-11
FORMULA_NAME PolyORBNT-PT-S10J80-ReachabilityFireability-12
FORMULA_NAME PolyORBNT-PT-S10J80-ReachabilityFireability-13
FORMULA_NAME PolyORBNT-PT-S10J80-ReachabilityFireability-14
FORMULA_NAME PolyORBNT-PT-S10J80-ReachabilityFireability-15

=== Now, execution of the tool begins

BK_START 1678976304938

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=PolyORBNT-PT-S10J80
Not applying reductions.
Model is PT
ReachabilityFireability PT
Running Version 202303021504
[2023-03-16 14:18:26] [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]
[2023-03-16 14:18:26] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-16 14:18:27] [INFO ] Load time of PNML (sax parser for PT used): 572 ms
[2023-03-16 14:18:27] [INFO ] Transformed 1614 places.
[2023-03-16 14:18:27] [INFO ] Transformed 13500 transitions.
[2023-03-16 14:18:27] [INFO ] Parsed PT model containing 1614 places and 13500 transitions and 119759 arcs in 740 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityFireability.xml in 136 ms.
Working with output stream class java.io.PrintStream
[2023-03-16 14:18:27] [INFO ] Reduced 780 identical enabling conditions.
[2023-03-16 14:18:27] [INFO ] Reduced 780 identical enabling conditions.
[2023-03-16 14:18:27] [INFO ] Reduced 9285 identical enabling conditions.
[2023-03-16 14:18:27] [INFO ] Reduced 9285 identical enabling conditions.
[2023-03-16 14:18:27] [INFO ] Reduced 45 identical enabling conditions.
[2023-03-16 14:18:27] [INFO ] Reduced 9285 identical enabling conditions.
[2023-03-16 14:18:27] [INFO ] Reduced 780 identical enabling conditions.
[2023-03-16 14:18:27] [INFO ] Reduced 45 identical enabling conditions.
[2023-03-16 14:18:27] [INFO ] Reduced 45 identical enabling conditions.
[2023-03-16 14:18:27] [INFO ] Reduced 9285 identical enabling conditions.
[2023-03-16 14:18:27] [INFO ] Reduced 45 identical enabling conditions.
Ensure Unique test removed 10110 transitions
Reduce redundant transitions removed 10110 transitions.
Incomplete random walk after 10000 steps, including 560 resets, run finished after 1029 ms. (steps per millisecond=9 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1001 steps, including 10 resets, run finished after 218 ms. (steps per millisecond=4 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1001 steps, including 10 resets, run finished after 21 ms. (steps per millisecond=47 ) properties (out of 16) seen :0
[2023-03-16 14:18:29] [INFO ] Flatten gal took : 406 ms
[2023-03-16 14:18:29] [INFO ] Flatten gal took : 234 ms
[2023-03-16 14:18:29] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality8851411623107683400.gal : 83 ms
[2023-03-16 14:18:29] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality8278312588366225964.prop : 61 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/ReachabilityCardinality8851411623107683400.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality8278312588366225964.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 ...328
Incomplete Best-First random walk after 1000 steps, including 10 resets, run finished after 978 ms. (steps per millisecond=1 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1001 steps, including 10 resets, run finished after 270 ms. (steps per millisecond=3 ) properties (out of 16) seen :0
Loading property file /tmp/ReachabilityCardinality8278312588366225964.prop.
Incomplete Best-First random walk after 1000 steps, including 9 resets, run finished after 251 ms. (steps per millisecond=3 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1001 steps, including 6 resets, run finished after 148 ms. (steps per millisecond=6 ) properties (out of 16) seen :6
FORMULA PolyORBNT-PT-S10J80-ReachabilityFireability-07 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA PolyORBNT-PT-S10J80-ReachabilityFireability-05 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA PolyORBNT-PT-S10J80-ReachabilityFireability-03 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA PolyORBNT-PT-S10J80-ReachabilityFireability-02 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA PolyORBNT-PT-S10J80-ReachabilityFireability-01 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA PolyORBNT-PT-S10J80-ReachabilityFireability-00 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
Incomplete Best-First random walk after 1001 steps, including 9 resets, run finished after 17 ms. (steps per millisecond=58 ) properties (out of 10) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 10) seen :0
Incomplete Best-First random walk after 1001 steps, including 10 resets, run finished after 17 ms. (steps per millisecond=58 ) properties (out of 10) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 10) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 10) seen :1
FORMULA PolyORBNT-PT-S10J80-ReachabilityFireability-13 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 9) seen :1
FORMULA PolyORBNT-PT-S10J80-ReachabilityFireability-14 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 12 ms. (steps per millisecond=83 ) properties (out of 8) seen :2
FORMULA PolyORBNT-PT-S10J80-ReachabilityFireability-15 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA PolyORBNT-PT-S10J80-ReachabilityFireability-09 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
Running SMT prover for 6 properties.
[2023-03-16 14:18:30] [INFO ] Flow matrix only has 3381 transitions (discarded 9 similar events)
// Phase 1: matrix 3381 rows 1614 cols
[2023-03-16 14:18:30] [INFO ] Computed 192 place invariants in 252 ms
[2023-03-16 14:18:35] [INFO ] [Real]Absence check using 159 positive place invariants in 47 ms returned sat
[2023-03-16 14:18:35] [INFO ] [Real]Absence check using 159 positive and 33 generalized place invariants in 83 ms returned sat
[2023-03-16 14:18:37] [INFO ] After 3291ms SMT Verify possible using all constraints in real domain returned unsat :4 sat :0 real:2
[2023-03-16 14:18:37] [INFO ] [Nat]Absence check using 159 positive place invariants in 31 ms returned sat
[2023-03-16 14:18:38] [INFO ] [Nat]Absence check using 159 positive and 33 generalized place invariants in 71 ms returned sat
SDD proceeding with computation,16 properties remain. new max is 4
SDD size :1 after 4
SDD proceeding with computation,16 properties remain. new max is 8
SDD size :4 after 16
[2023-03-16 14:18:42] [INFO ] After 4145ms SMT Verify possible using state equation in natural domain returned unsat :4 sat :2
[2023-03-16 14:18:42] [INFO ] State equation strengthened by 1 read => feed constraints.
SDD proceeding with computation,16 properties remain. new max is 16
SDD size :16 after 64
[2023-03-16 14:18:53] [INFO ] After 11131ms SMT Verify possible using 1 Read/Feed constraints in natural domain returned unsat :4 sat :1
[2023-03-16 14:18:53] [INFO ] After 11352ms SMT Verify possible using trap constraints in natural domain returned unsat :4 sat :1
Attempting to minimize the solution found.
Minimization took 133 ms.
[2023-03-16 14:18:53] [INFO ] After 15975ms SMT Verify possible using all constraints in natural domain returned unsat :4 sat :1
FORMULA PolyORBNT-PT-S10J80-ReachabilityFireability-12 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA PolyORBNT-PT-S10J80-ReachabilityFireability-10 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA PolyORBNT-PT-S10J80-ReachabilityFireability-08 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA PolyORBNT-PT-S10J80-ReachabilityFireability-04 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
Fused 6 Parikh solutions to 2 different solutions.
Parikh walk visited 0 properties in 22 ms.
Support contains 3 out of 1614 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 1614/1614 places, 3390/3390 transitions.
Ensure Unique test removed 10 places
Drop transitions removed 84 transitions
Trivial Post-agglo rules discarded 84 transitions
Performed 84 trivial Post agglomeration. Transition count delta: 84
Iterating post reduction 0 with 94 rules applied. Total rules applied 94 place count 1604 transition count 3306
Reduce places removed 84 places and 0 transitions.
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Iterating post reduction 1 with 86 rules applied. Total rules applied 180 place count 1520 transition count 3304
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 2 with 2 rules applied. Total rules applied 182 place count 1518 transition count 3304
Performed 83 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 83 Pre rules applied. Total rules applied 182 place count 1518 transition count 3221
Deduced a syphon composed of 83 places in 2 ms
Reduce places removed 83 places and 0 transitions.
Iterating global reduction 3 with 166 rules applied. Total rules applied 348 place count 1435 transition count 3221
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 349 place count 1434 transition count 3220
Iterating global reduction 3 with 1 rules applied. Total rules applied 350 place count 1434 transition count 3220
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Deduced a syphon composed of 2 places in 2 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 3 with 4 rules applied. Total rules applied 354 place count 1432 transition count 3218
Applied a total of 354 rules in 841 ms. Remains 1432 /1614 variables (removed 182) and now considering 3218/3390 (removed 172) transitions.
[2023-03-16 14:18:54] [INFO ] Flow matrix only has 3209 transitions (discarded 9 similar events)
// Phase 1: matrix 3209 rows 1432 cols
[2023-03-16 14:18:54] [INFO ] Computed 182 place invariants in 162 ms
[2023-03-16 14:18:57] [INFO ] Dead Transitions using invariants and state equation in 2788 ms found 615 transitions.
Found 615 dead transitions using SMT.
Drop transitions removed 615 transitions
Dead transitions reduction (with SMT) triggered by suspicious arc values removed 615 transitions.
Starting structural reductions in REACHABILITY mode, iteration 1 : 1432/1614 places, 2603/3390 transitions.
Applied a total of 0 rules in 136 ms. Remains 1432 /1432 variables (removed 0) and now considering 2603/2603 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3769 ms. Remains : 1432/1614 places, 2603/3390 transitions.
Finished random walk after 3578 steps, including 249 resets, run visited all 2 properties in 48 ms. (steps per millisecond=74 )
FORMULA PolyORBNT-PT-S10J80-ReachabilityFireability-11 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBNT-PT-S10J80-ReachabilityFireability-06 FALSE TECHNIQUES TOPOLOGICAL RANDOM_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 31231 ms.

BK_STOP 1678976342960

--------------------
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="PolyORBNT-PT-S10J80"
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 PolyORBNT-PT-S10J80, 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 r293-tall-167873945900791"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/PolyORBNT-PT-S10J80.tgz
mv PolyORBNT-PT-S10J80 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 ;