Execution Chart

We display below the execution chart for this examination (boot time has been removed).

Trace from the execution

Formatting '/data/fkordon/mcc2026-input.r338-smll-178021499000055.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2026-input.qcow2 backing_fmt=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 2-5973
Executing tool itstools
Input is ErlangenMainframeV1-PT-bP01C01, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r338-smll-178021499000055
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 516K
-rw-r--r-- 1 mcc users 7.9K May 27 08:55 CTLCardinality.txt
-rw-r--r-- 1 mcc users 88K May 27 08:55 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.0K May 27 08:55 CTLFireability.txt
-rw-r--r-- 1 mcc users 42K May 27 08:55 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.9K May 27 10:30 LTLCardinality.txt
-rw-r--r-- 1 mcc users 27K May 27 10:30 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.5K May 27 10:30 LTLFireability.txt
-rw-r--r-- 1 mcc users 19K May 27 10:30 LTLFireability.xml
-rw-r--r-- 1 mcc users 1 May 26 18:17 NewModel
-rw-r--r-- 1 mcc users 14K May 27 08:55 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 152K May 27 08:55 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 7.3K May 27 08:55 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 58K May 27 08:55 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K May 27 10:30 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.9K May 27 10:30 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 26 18:17 equiv_col
-rw-r--r-- 1 mcc users 8 May 26 18:17 instance
-rw-r--r-- 1 mcc users 6 May 26 18:17 iscolored
-rw-r--r-- 1 mcc users 52K May 26 18:17 model.pnml

--------------------
content from stdout:

=== Data for post analysis generated by BenchKit (invocation template)

The expected result is a vector of booleans
BOOL_VECTOR

echo here is the order used to build the result vector(from xml file)
FORMULA_NAME ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-00
FORMULA_NAME ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-01
FORMULA_NAME ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-02
FORMULA_NAME ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-03
FORMULA_NAME ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-04
FORMULA_NAME ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-05
FORMULA_NAME ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-06
FORMULA_NAME ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-07
FORMULA_NAME ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-08
FORMULA_NAME ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-09
FORMULA_NAME ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-10
FORMULA_NAME ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-11
FORMULA_NAME ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-12
FORMULA_NAME ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-13
FORMULA_NAME ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-14
FORMULA_NAME ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-15

=== Now, execution of the tool begins

BK_START 1780260248745

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=ReachabilityFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=ErlangenMainframeV1-PT-bP01C01
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
ReachabilityFireability PT
Running Version 202604301425
[2026-05-31 20:44:11] [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]
[2026-05-31 20:44:11] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-31 20:44:11] [INFO ] Load time of PNML (sax parser for PT used): 164 ms
[2026-05-31 20:44:11] [INFO ] Transformed 173 places.
[2026-05-31 20:44:11] [INFO ] Transformed 219 transitions.
[2026-05-31 20:44:11] [INFO ] Found NUPN structural information;
[2026-05-31 20:44:11] [INFO ] Parsed PT model containing 173 places and 219 transitions and 608 arcs in 386 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityFireability.xml in 29 ms.
Working with output stream class java.io.PrintStream
[2026-05-31 20:44:12] [INFO ] Flatten gal took : 137 ms
[2026-05-31 20:44:12] [INFO ] Flatten gal took : 60 ms
RANDOM walk for 40000 steps (8 resets) in 2765 ms. (14 steps per ms) remains 11/16 properties
FORMULA ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-13 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-10 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-08 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-06 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-03 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
[2026-05-31 20:44:12] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality12928776465315718144.gal : 77 ms
[2026-05-31 20:44:13] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality9247576018527220407.prop : 9 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality12928776465315718144.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality9247576018527220407.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
Loading property file /tmp/ReachabilityCardinality9247576018527220407.prop.
SDD proceeding with computation,11 properties remain. new max is 4
SDD size :1 after 2
SDD proceeding with computation,11 properties remain. new max is 8
SDD size :2 after 4
SDD proceeding with computation,11 properties remain. new max is 16
SDD size :4 after 6
SDD proceeding with computation,11 properties remain. new max is 32
SDD size :6 after 19
SDD proceeding with computation,11 properties remain. new max is 64
SDD size :19 after 130
SDD proceeding with computation,11 properties remain. new max is 128
SDD size :130 after 634
Reachability property ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-00 is true.
FORMULA ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-00 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
SDD proceeding with computation,10 properties remain. new max is 128
SDD size :634 after 3225
BEST_FIRST walk for 40000 steps (8 resets) in 1181 ms. (33 steps per ms) remains 8/11 properties
FORMULA ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-04 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-02 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
SDD proceeding with computation,10 properties remain. new max is 256
SDD size :3225 after 50702
SDD proceeding with computation,10 properties remain. new max is 512
SDD size :50702 after 144684
BEST_FIRST walk for 40000 steps (8 resets) in 346 ms. (115 steps per ms) remains 8/8 properties
BEST_FIRST walk for 40000 steps (8 resets) in 461 ms. (86 steps per ms) remains 7/8 properties
FORMULA ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-05 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 40002 steps (8 resets) in 423 ms. (94 steps per ms) remains 7/7 properties
BEST_FIRST walk for 40003 steps (8 resets) in 585 ms. (68 steps per ms) remains 7/7 properties
Invariant property ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-15 does not hold.
FORMULA ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-15 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
BEST_FIRST walk for 40003 steps (8 resets) in 571 ms. (69 steps per ms) remains 7/7 properties
BEST_FIRST walk for 40001 steps (8 resets) in 225 ms. (176 steps per ms) remains 7/7 properties
BEST_FIRST walk for 40003 steps (8 resets) in 187 ms. (212 steps per ms) remains 6/7 properties
FORMULA ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-12 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 40003 steps (8 resets) in 190 ms. (209 steps per ms) remains 5/6 properties
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-16167534207604723744.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-17554087001862347452.kers'
[2026-05-31 20:44:14] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-16167534207604723744.kers, --Pflows, --basisKERS=/tmp/petrispot-output-17554087001862347452.kers]
Culled 0 columns in 0 ms.
// Phase 1: matrix 219 rows 173 cols 608 entries
Finished phase 1 with 162 SingleSign rule and 3 generalized
[2026-05-31 20:44:14] [INFO ] Computed 8 invariants in 1 ms
Computed 8 P flows in 3 ms.
Exported basis to /tmp/petrispot-output-17554087001862347452.kers
Total runtime 3 ms.
Excessive predecessor constraint size, skipping predecessor.
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/64 variables, 64/64 constraints. Problems are: Problem set: 0 solved, 5 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/64 variables, 0/64 constraints. Problems are: Problem set: 0 solved, 5 unsolved
Problem ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-11 is UNSAT
FORMULA ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-11 FALSE TECHNIQUES SMT_REFINEMENT
At refinement iteration 2 (OVERLAPS) 104/168 variables, 7/71 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/168 variables, 104/175 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/168 variables, 0/175 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 5 (OVERLAPS) 5/173 variables, 1/176 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/173 variables, 5/181 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/173 variables, 0/181 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 8 (OVERLAPS) 219/392 variables, 173/354 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/392 variables, 0/354 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 10 (OVERLAPS) 0/392 variables, 0/354 constraints. Problems are: Problem set: 1 solved, 4 unsolved
No progress, stopping.
After SMT solving in domain Real declared 392/392 variables, and 354 constraints, problems are : Problem set: 1 solved, 4 unsolved in 929 ms.
Refiners :[Domain max(s): 173/173 constraints, Positive P Invariants (semi-flows): 7/7 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 173/173 constraints, PredecessorRefiner: 5/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 1 solved, 4 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/51 variables, 51/51 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/51 variables, 0/51 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 2 (OVERLAPS) 116/167 variables, 7/58 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/167 variables, 116/174 constraints. Problems are: Problem set: 1 solved, 4 unsolved
Invariant property ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-05 does not hold.
SDD proceeding with computation,8 properties remain. new max is 512
SDD size :144684 after 2.64375e+06
SDD proceeding with computation,8 properties remain. new max is 1024
SDD size :2.64375e+06 after 7.66767e+06
At refinement iteration 4 (INCLUDED_ONLY) 0/167 variables, 1/175 constraints. Problems are: Problem set: 1 solved, 4 unsolved
Reachability property ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-01 is true.
FORMULA ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-01 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
SDD proceeding with computation,7 properties remain. new max is 1024
SDD size :2.2442e+07 after 4.35232e+07
At refinement iteration 5 (INCLUDED_ONLY) 0/167 variables, 0/175 constraints. Problems are: Problem set: 2 solved, 3 unsolved
At refinement iteration 6 (OVERLAPS) 6/173 variables, 1/176 constraints. Problems are: Problem set: 2 solved, 3 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/173 variables, 6/182 constraints. Problems are: Problem set: 2 solved, 3 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/173 variables, 0/182 constraints. Problems are: Problem set: 2 solved, 3 unsolved
At refinement iteration 9 (OVERLAPS) 219/392 variables, 173/355 constraints. Problems are: Problem set: 2 solved, 3 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/392 variables, 2/357 constraints. Problems are: Problem set: 2 solved, 3 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/392 variables, 1/358 constraints. Problems are: Problem set: 2 solved, 3 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/392 variables, 0/358 constraints. Problems are: Problem set: 2 solved, 3 unsolved
At refinement iteration 13 (OVERLAPS) 0/392 variables, 0/358 constraints. Problems are: Problem set: 2 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 392/392 variables, and 358 constraints, problems are : Problem set: 2 solved, 3 unsolved in 2428 ms.
Refiners :[Domain max(s): 173/173 constraints, Positive P Invariants (semi-flows): 7/7 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 173/173 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 2/2 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 3532ms problems are : Problem set: 2 solved, 3 unsolved
FORMULA ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-07 FALSE TECHNIQUES PARIKH_WALK
Finished Parikh walk after 13154 steps, including 219 resets, run visited all 2 properties in 51 ms. (steps per millisecond=257 )
FORMULA ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-14 TRUE TECHNIQUES PARIKH_WALK
FORMULA ErlangenMainframeV1-PT-bP01C01-ReachabilityFireability-2024-09 FALSE TECHNIQUES PARIKH_WALK
Finished Parikh walk after 0 steps, including 0 resets, run visited all 0 properties in 1 ms. (steps per millisecond=0 )
Parikh walk visited 3 properties in 317 ms.
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
All properties solved without resorting to model-checking.
Total runtime 6841 ms.

BK_STOP 1780260258236

--------------------
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
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202604301425.jar
+ VERSION=202604301425
+ echo 'Running Version 202604301425'
+ /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="ErlangenMainframeV1-PT-bP01C01"
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 2-5973"
echo " Executing tool itstools"
echo " Input is ErlangenMainframeV1-PT-bP01C01, 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 r338-smll-178021499000055"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/ErlangenMainframeV1-PT-bP01C01.tgz
mv ErlangenMainframeV1-PT-bP01C01 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.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 ;