fond
Model Checking Contest 2024
14th edition, Geneva, Switzerland, June 25, 2024
Execution of r528-tall-171683760700269
Last Updated
July 7, 2024

About the Execution of LTSMin+red for ShieldIIPt-PT-010B

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
348.371 12171.00 21682.00 56.70 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 normal

Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2024-input.r528-tall-171683760700269.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2024-input.qcow2 backing_fmt=qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
................
=====================================================================
Generated by BenchKit 2-5568
Executing tool ltsminxred
Input is ShieldIIPt-PT-010B, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r528-tall-171683760700269
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 584K
-rw-r--r-- 1 mcc users 6.5K May 14 13:22 CTLCardinality.txt
-rw-r--r-- 1 mcc users 72K May 14 13:22 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.5K May 14 13:22 CTLFireability.txt
-rw-r--r-- 1 mcc users 65K May 14 13:22 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 18 16:43 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 3.4K Apr 23 07:52 LTLCardinality.txt
-rw-r--r-- 1 mcc users 23K Apr 23 07:52 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.1K May 19 07:31 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K May 19 19:06 LTLFireability.xml
-rw-r--r-- 1 mcc users 9.2K Apr 12 20:37 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 95K Apr 12 20:37 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 7.4K Apr 12 20:37 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 61K Apr 12 20:37 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Apr 23 07:52 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Apr 23 07:52 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 18 16:43 equiv_col
-rw-r--r-- 1 mcc users 5 May 18 16:43 instance
-rw-r--r-- 1 mcc users 6 May 18 16:43 iscolored
-rw-r--r-- 1 mcc users 167K May 18 16:43 model.pnml

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

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

The expected result is a vector of positive values
NUM_VECTOR

here is the order used to build the result vector(from text file)
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-00
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-01
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-02
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-03
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-04
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-05
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-06
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-07
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-08
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-09
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-10
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-11
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-12
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-13
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-14
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-15

=== Now, execution of the tool begins

BK_START 1717236639089

Invoking MCC driver with
BK_TOOL=ltsminxred
BK_EXAMINATION=UpperBounds
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=ShieldIIPt-PT-010B
BK_MEMORY_CONFINEMENT=16384
Applying reductions before tool ltsmin
Invoking reducer
Running Version 202405141337
[2024-06-01 10:10:40] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, UpperBounds, -timeout, 360, -rebuildPNML]
[2024-06-01 10:10:40] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2024-06-01 10:10:40] [INFO ] Load time of PNML (sax parser for PT used): 103 ms
[2024-06-01 10:10:40] [INFO ] Transformed 703 places.
[2024-06-01 10:10:40] [INFO ] Transformed 653 transitions.
[2024-06-01 10:10:40] [INFO ] Found NUPN structural information;
[2024-06-01 10:10:40] [INFO ] Parsed PT model containing 703 places and 653 transitions and 1626 arcs in 216 ms.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 7 ms.
Current structural bounds on expressions (Initiallly, because the net is safe) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
Current structural bounds on expressions (Before main loop) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
// Phase 1: matrix 653 rows 703 cols
[2024-06-01 10:10:40] [INFO ] Computed 91 invariants in 32 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
RANDOM walk for 10000 steps (2 resets) in 62 ms. (158 steps per ms)
FORMULA ShieldIIPt-PT-010B-UpperBounds-15 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA ShieldIIPt-PT-010B-UpperBounds-14 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA ShieldIIPt-PT-010B-UpperBounds-13 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA ShieldIIPt-PT-010B-UpperBounds-12 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA ShieldIIPt-PT-010B-UpperBounds-11 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA ShieldIIPt-PT-010B-UpperBounds-10 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA ShieldIIPt-PT-010B-UpperBounds-09 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA ShieldIIPt-PT-010B-UpperBounds-08 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA ShieldIIPt-PT-010B-UpperBounds-07 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA ShieldIIPt-PT-010B-UpperBounds-06 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA ShieldIIPt-PT-010B-UpperBounds-04 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA ShieldIIPt-PT-010B-UpperBounds-03 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA ShieldIIPt-PT-010B-UpperBounds-02 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA ShieldIIPt-PT-010B-UpperBounds-01 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA ShieldIIPt-PT-010B-UpperBounds-00 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 10001 steps (2 resets) in 12 ms. (769 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[0] Max Struct:[1]
[2024-06-01 10:10:40] [INFO ] Invariant cache hit.
[2024-06-01 10:10:40] [INFO ] [Real]Absence check using 91 positive place invariants in 32 ms returned sat
[2024-06-01 10:10:41] [INFO ] [Real]Absence check using state equation in 204 ms returned sat
[2024-06-01 10:10:41] [INFO ] Deduced a trap composed of 24 places in 220 ms of which 31 ms to minimize.
[2024-06-01 10:10:41] [INFO ] Solution in real domain found non-integer solution.
[2024-06-01 10:10:41] [INFO ] [Nat]Absence check using 91 positive place invariants in 27 ms returned sat
[2024-06-01 10:10:41] [INFO ] [Nat]Absence check using state equation in 195 ms returned sat
[2024-06-01 10:10:41] [INFO ] Deduced a trap composed of 24 places in 147 ms of which 4 ms to minimize.
[2024-06-01 10:10:42] [INFO ] Deduced a trap composed of 19 places in 157 ms of which 20 ms to minimize.
[2024-06-01 10:10:42] [INFO ] Deduced a trap composed of 25 places in 130 ms of which 4 ms to minimize.
[2024-06-01 10:10:42] [INFO ] Deduced a trap composed of 17 places in 150 ms of which 3 ms to minimize.
[2024-06-01 10:10:42] [INFO ] Deduced a trap composed of 13 places in 136 ms of which 3 ms to minimize.
[2024-06-01 10:10:42] [INFO ] Deduced a trap composed of 23 places in 131 ms of which 3 ms to minimize.
[2024-06-01 10:10:42] [INFO ] Deduced a trap composed of 20 places in 129 ms of which 3 ms to minimize.
[2024-06-01 10:10:43] [INFO ] Deduced a trap composed of 21 places in 134 ms of which 2 ms to minimize.
[2024-06-01 10:10:43] [INFO ] Deduced a trap composed of 23 places in 125 ms of which 3 ms to minimize.
[2024-06-01 10:10:43] [INFO ] Deduced a trap composed of 26 places in 118 ms of which 3 ms to minimize.
[2024-06-01 10:10:43] [INFO ] Deduced a trap composed of 25 places in 122 ms of which 2 ms to minimize.
[2024-06-01 10:10:43] [INFO ] Deduced a trap composed of 21 places in 96 ms of which 2 ms to minimize.
[2024-06-01 10:10:43] [INFO ] Trap strengthening (SAT) tested/added 13/12 trap constraints in 1913 ms
[2024-06-01 10:10:43] [INFO ] Computed and/alt/rep : 652/983/652 causal constraints (skipped 0 transitions) in 45 ms.
[2024-06-01 10:10:46] [WARNING] SMT solver failed with error :java.lang.RuntimeException: SMT solver raised an error when submitting script. Raised (error "Failed to assert expression: java.io.IOException: Broken pipe ... while checking expression at index 0
java.lang.RuntimeException: SMT solver raised an error when submitting script. Raised (error "Failed to assert expression: java.io.IOException: Broken pipe ...
at fr.lip6.move.gal.structural.smt.SMTUtils.execAndCheckResult(SMTUtils.java:299)
at fr.lip6.move.gal.structural.smt.DeadlockTester.refineWithCausalOrder(DeadlockTester.java:1137)
at fr.lip6.move.gal.structural.smt.DeadlockTester.verifyPossible(DeadlockTester.java:875)
at fr.lip6.move.gal.structural.smt.DeadlockTester.findStructuralMaxWithSMT(DeadlockTester.java:2251)
at fr.lip6.move.gal.application.solver.UpperBoundsSolver.applyReductions(UpperBoundsSolver.java:219)
at fr.lip6.move.gal.application.Application.startNoEx(Application.java:910)
at fr.lip6.move.gal.application.Application.start(Application.java:189)
at fr.lip6.move.gal.itscl.application.Application.start(Application.java:45)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:208)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:136)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:402)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:651)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:588)
at org.eclipse.equinox.launcher.Main.run(Main.java:1459)
at org.eclipse.equinox.launcher.Main.main(Main.java:1432)
Current structural bounds on expressions (after SMT) : Max Seen:[0] Max Struct:[1]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[0] Max Struct:[1]
Support contains 1 out of 703 places. Attempting structural reductions.
Drop transitions (Removing consumers from one bounded place p32) removed 1 transitions
Starting structural reductions in REACHABILITY mode, iteration 0 : 703/703 places, 652/652 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 172 transitions
Trivial Post-agglo rules discarded 172 transitions
Performed 172 trivial Post agglomeration. Transition count delta: 172
Iterating post reduction 0 with 172 rules applied. Total rules applied 172 place count 703 transition count 480
Reduce places removed 172 places and 0 transitions.
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 1 transitions
Trivial Post-agglo rules discarded 1 transitions
Performed 1 trivial Post agglomeration. Transition count delta: 1
Iterating post reduction 1 with 174 rules applied. Total rules applied 346 place count 531 transition count 478
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 2 with 1 rules applied. Total rules applied 347 place count 530 transition count 478
Performed 41 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 41 Pre rules applied. Total rules applied 347 place count 530 transition count 437
Deduced a syphon composed of 41 places in 1 ms
Reduce places removed 41 places and 0 transitions.
Iterating global reduction 3 with 82 rules applied. Total rules applied 429 place count 489 transition count 437
Discarding 70 places :
Symmetric choice reduction at 3 with 70 rule applications. Total rules 499 place count 419 transition count 367
Iterating global reduction 3 with 70 rules applied. Total rules applied 569 place count 419 transition count 367
Performed 30 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 30 Pre rules applied. Total rules applied 569 place count 419 transition count 337
Deduced a syphon composed of 30 places in 1 ms
Reduce places removed 30 places and 0 transitions.
Iterating global reduction 3 with 60 rules applied. Total rules applied 629 place count 389 transition count 337
Performed 168 Post agglomeration using F-continuation condition.Transition count delta: 168
Deduced a syphon composed of 168 places in 0 ms
Reduce places removed 168 places and 0 transitions.
Iterating global reduction 3 with 336 rules applied. Total rules applied 965 place count 221 transition count 169
Performed 29 Post agglomeration using F-continuation condition.Transition count delta: -19
Deduced a syphon composed of 29 places in 0 ms
Reduce places removed 29 places and 0 transitions.
Iterating global reduction 3 with 58 rules applied. Total rules applied 1023 place count 192 transition count 188
Drop transitions (Empty/Sink Transition effects.) removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 3 with 1 rules applied. Total rules applied 1024 place count 192 transition count 187
Partial Free-agglomeration rule applied 10 times.
Drop transitions (Partial Free agglomeration) removed 10 transitions
Iterating global reduction 4 with 10 rules applied. Total rules applied 1034 place count 192 transition count 187
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 4 with 1 rules applied. Total rules applied 1035 place count 191 transition count 186
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 4 with 2 rules applied. Total rules applied 1037 place count 189 transition count 186
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 5 with 1 Pre rules applied. Total rules applied 1037 place count 189 transition count 185
Deduced a syphon composed of 1 places in 1 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 5 with 2 rules applied. Total rules applied 1039 place count 188 transition count 185
Applied a total of 1039 rules in 179 ms. Remains 188 /703 variables (removed 515) and now considering 185/652 (removed 467) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 187 ms. Remains : 188/703 places, 185/652 transitions.
// Phase 1: matrix 185 rows 188 cols
[2024-06-01 10:10:46] [INFO ] Computed 89 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[1]
RANDOM walk for 1000000 steps (171 resets) in 3000 ms. (333 steps per ms)
FORMULA ShieldIIPt-PT-010B-UpperBounds-05 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 1000001 steps (18 resets) in 1466 ms. (681 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[] Max Struct:[]
RANDOM walk for 0 steps (0 resets) in 5 ms. (0 steps per ms) remains 0/0 properties
Finished probabilistic random walk after 0 steps, run visited all 0 properties in 0 ms. (steps per millisecond=0 )
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[] Max Struct:[]
All properties solved without resorting to model-checking.
Total runtime 11015 ms.
ITS solved all properties within timeout

BK_STOP 1717236651260

--------------------
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_1.0.0.202405141337.jar
+ VERSION=202405141337
+ echo 'Running Version 202405141337'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination UpperBounds -timeout 360 -rebuildPNML

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="ShieldIIPt-PT-010B"
export BK_EXAMINATION="UpperBounds"
export BK_TOOL="ltsminxred"
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 2-5568"
echo " Executing tool ltsminxred"
echo " Input is ShieldIIPt-PT-010B, examination is UpperBounds"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r528-tall-171683760700269"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/ShieldIIPt-PT-010B.tgz
mv ShieldIIPt-PT-010B execution
cd execution
if [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "UpperBounds" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] || [ "UpperBounds" = "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 [ "UpperBounds" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "UpperBounds" != "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 "UpperBounds.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property UpperBounds.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "UpperBounds.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 '' UpperBounds.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] ; then
echo "FORMULA_NAME UpperBounds"
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 ;