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.r533-tall-167987253000028.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 lolaxred
Input is Anderson-PT-09, examination is StableMarking
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r533-tall-167987253000028
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 1.4M
-rw-r--r-- 1 mcc users 7.1K Mar 23 15:19 CTLCardinality.txt
-rw-r--r-- 1 mcc users 71K Mar 23 15:19 CTLCardinality.xml
-rw-r--r-- 1 mcc users 8.1K Mar 23 15:18 CTLFireability.txt
-rw-r--r-- 1 mcc users 61K Mar 23 15:18 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.9K Mar 23 07:06 LTLCardinality.txt
-rw-r--r-- 1 mcc users 25K Mar 23 07:06 LTLCardinality.xml
-rw-r--r-- 1 mcc users 3.1K Mar 23 07:06 LTLFireability.txt
-rw-r--r-- 1 mcc users 20K Mar 23 07:06 LTLFireability.xml
-rw-r--r-- 1 mcc users 1 Mar 26 22:42 NewModel
-rw-r--r-- 1 mcc users 16K Mar 23 15:19 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 167K Mar 23 15:19 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 9.0K Mar 23 15:19 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 58K Mar 23 15:19 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Mar 23 07:06 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Mar 23 07:06 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 26 22:42 equiv_col
-rw-r--r-- 1 mcc users 3 Mar 26 22:42 instance
-rw-r--r-- 1 mcc users 6 Mar 26 22:42 iscolored
-rw-r--r-- 1 mcc users 927K Mar 31 16:48 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 1680815984833

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=lolaxred
BK_EXAMINATION=StableMarking
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=1800
BK_INPUT=Anderson-PT-09
Applying reductions before tool lola
Invoking reducer
Running Version 202304061127
[2023-04-06 21:19:46] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, StableMarking, -timeout, 180, -rebuildPNML]
[2023-04-06 21:19:46] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-04-06 21:19:46] [INFO ] Load time of PNML (sax parser for PT used): 113 ms
[2023-04-06 21:19:46] [INFO ] Transformed 505 places.
[2023-04-06 21:19:46] [INFO ] Transformed 1845 transitions.
[2023-04-06 21:19:46] [INFO ] Found NUPN structural information;
[2023-04-06 21:19:46] [INFO ] Parsed PT model containing 505 places and 1845 transitions and 7092 arcs in 189 ms.
Incomplete random walk after 10000 steps, including 2 resets, run finished after 564 ms. (steps per millisecond=17 ) properties (out of 505) seen :414
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 16 ms. (steps per millisecond=62 ) properties (out of 91) seen :17
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 14 ms. (steps per millisecond=71 ) properties (out of 74) seen :3
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 71) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 14 ms. (steps per millisecond=71 ) properties (out of 71) seen :10
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 13 ms. (steps per millisecond=76 ) properties (out of 61) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 13 ms. (steps per millisecond=77 ) properties (out of 61) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 18 ms. (steps per millisecond=55 ) properties (out of 61) seen :1
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 60) 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 60) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 60) seen :1
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 59) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 8 ms. (steps per millisecond=125 ) properties (out of 59) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 59) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 59) 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 59) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 59) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 59) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 59) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 8 ms. (steps per millisecond=125 ) properties (out of 59) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 59) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 59) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 14 ms. (steps per millisecond=71 ) properties (out of 59) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 59) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 11 ms. (steps per millisecond=91 ) properties (out of 59) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 59) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 8 ms. (steps per millisecond=125 ) properties (out of 59) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 59) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 11 ms. (steps per millisecond=91 ) properties (out of 59) 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 59) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 59) seen :1
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 58) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 8 ms. (steps per millisecond=125 ) properties (out of 58) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 58) 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 58) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 58) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 58) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 58) 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 58) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 58) seen :1
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 57) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 13 ms. (steps per millisecond=76 ) properties (out of 57) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 57) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 57) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 57) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 57) 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 57) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 57) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 57) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 57) 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 57) 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 57) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 57) 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 57) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 8 ms. (steps per millisecond=125 ) properties (out of 57) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 7 ms. (steps per millisecond=142 ) properties (out of 57) 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 57) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 57) seen :0
Running SMT prover for 57 properties.
// Phase 1: matrix 1845 rows 505 cols
[2023-04-06 21:19:47] [INFO ] Computed 21 invariants in 66 ms
[2023-04-06 21:19:48] [INFO ] After 864ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:57
[2023-04-06 21:19:49] [INFO ] [Nat]Absence check using 10 positive place invariants in 15 ms returned sat
[2023-04-06 21:19:49] [INFO ] [Nat]Absence check using 10 positive and 11 generalized place invariants in 39 ms returned sat
[2023-04-06 21:19:54] [INFO ] After 4709ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :57
[2023-04-06 21:19:55] [INFO ] State equation strengthened by 72 read => feed constraints.
[2023-04-06 21:19:58] [INFO ] After 3820ms SMT Verify possible using 72 Read/Feed constraints in natural domain returned unsat :0 sat :57
[2023-04-06 21:20:04] [INFO ] After 9499ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :57
Attempting to minimize the solution found.
Minimization took 3908 ms.
[2023-04-06 21:20:08] [INFO ] After 19556ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :57
Parikh walk visited 34 properties in 5167 ms.
Support contains 23 out of 505 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 505/505 places, 1845/1845 transitions.
Performed 50 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 0 with 50 Pre rules applied. Total rules applied 0 place count 505 transition count 1795
Deduced a syphon composed of 50 places in 3 ms
Reduce places removed 50 places and 0 transitions.
Iterating global reduction 0 with 100 rules applied. Total rules applied 100 place count 455 transition count 1795
Discarding 122 places :
Symmetric choice reduction at 0 with 122 rule applications. Total rules 222 place count 333 transition count 521
Iterating global reduction 0 with 122 rules applied. Total rules applied 344 place count 333 transition count 521
Performed 22 Post agglomeration using F-continuation condition.Transition count delta: 22
Deduced a syphon composed of 22 places in 1 ms
Reduce places removed 22 places and 0 transitions.
Iterating global reduction 0 with 44 rules applied. Total rules applied 388 place count 311 transition count 499
Applied a total of 388 rules in 114 ms. Remains 311 /505 variables (removed 194) and now considering 499/1845 (removed 1346) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 116 ms. Remains : 311/505 places, 499/1845 transitions.
Incomplete random walk after 1000000 steps, including 2 resets, run finished after 25343 ms. (steps per millisecond=39 ) properties (out of 23) seen :0
Incomplete Best-First random walk after 100000 steps, including 2 resets, run finished after 1062 ms. (steps per millisecond=94 ) properties (out of 23) seen :0
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 1328 ms. (steps per millisecond=75 ) properties (out of 23) seen :0
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 1147 ms. (steps per millisecond=87 ) properties (out of 23) seen :0
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 1036 ms. (steps per millisecond=96 ) properties (out of 23) seen :0
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 1021 ms. (steps per millisecond=97 ) properties (out of 23) seen :0
Incomplete Best-First random walk after 100000 steps, including 2 resets, run finished after 1000 ms. (steps per millisecond=100 ) properties (out of 23) seen :0
Incomplete Best-First random walk after 100000 steps, including 2 resets, run finished after 998 ms. (steps per millisecond=100 ) properties (out of 23) seen :0
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 960 ms. (steps per millisecond=104 ) properties (out of 23) seen :0
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 944 ms. (steps per millisecond=105 ) properties (out of 23) seen :0
Incomplete Best-First random walk after 100000 steps, including 2 resets, run finished after 978 ms. (steps per millisecond=102 ) properties (out of 23) seen :0
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 1125 ms. (steps per millisecond=88 ) properties (out of 23) seen :0
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 1309 ms. (steps per millisecond=76 ) properties (out of 23) seen :0
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 1207 ms. (steps per millisecond=82 ) properties (out of 23) seen :0
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 1144 ms. (steps per millisecond=87 ) properties (out of 23) seen :0
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 1322 ms. (steps per millisecond=75 ) properties (out of 23) seen :0
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 1385 ms. (steps per millisecond=72 ) properties (out of 23) seen :0
Incomplete Best-First random walk after 100000 steps, including 2 resets, run finished after 1345 ms. (steps per millisecond=74 ) properties (out of 23) seen :0
Incomplete Best-First random walk after 100000 steps, including 2 resets, run finished after 1338 ms. (steps per millisecond=74 ) properties (out of 23) seen :0
Incomplete Best-First random walk after 100000 steps, including 2 resets, run finished after 1333 ms. (steps per millisecond=75 ) properties (out of 23) seen :0
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 1349 ms. (steps per millisecond=74 ) properties (out of 23) seen :0
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 1348 ms. (steps per millisecond=74 ) properties (out of 23) seen :0
Incomplete Best-First random walk after 100000 steps, including 2 resets, run finished after 973 ms. (steps per millisecond=102 ) properties (out of 23) seen :0
Incomplete Best-First random walk after 100000 steps, including 2 resets, run finished after 947 ms. (steps per millisecond=105 ) properties (out of 23) seen :0
Finished probabilistic random walk after 2591899 steps, run visited all 23 properties in 23810 ms. (steps per millisecond=108 )
Probabilistic random walk after 2591899 steps, saw 1561364 distinct states, run finished after 23810 ms. (steps per millisecond=108 ) properties seen :23
Parikh walk visited 0 properties in 0 ms.
Able to resolve query StableMarking after proving 505 properties.
FORMULA StableMarking FALSE TECHNIQUES RANDOM_WALK PARIKH_WALK PROBABILISTIC_WALK BESTFIRST_WALK TOPOLOGICAL
Total runtime 103049 ms.
ITS solved all properties within timeout

BK_STOP 1680816090336

--------------------
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_1.0.0.202304061127.jar
+ VERSION=202304061127
+ echo 'Running Version 202304061127'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination StableMarking -timeout 180 -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="Anderson-PT-09"
export BK_EXAMINATION="StableMarking"
export BK_TOOL="lolaxred"
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 lolaxred"
echo " Input is Anderson-PT-09, 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 r533-tall-167987253000028"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/Anderson-PT-09.tgz
mv Anderson-PT-09 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 ;