About the Execution of ITS-Tools for Eratosthenes-PT-500
Execution Summary | |||||
Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
2400.540 | 105287.00 | 109775.00 | 709.50 | FTFTFTTTFFFTTTFF | normal |
Execution Chart
We display below the execution chart for this examination (boot time has been removed).
Trace from the execution
Formatting '/data/fkordon/mcc2019-input.r074-smll-155234739300301.qcow2', fmt=qcow2 size=4294967296 backing_file='/data/fkordon/mcc2019-input.qcow2' encryption=off cluster_size=65536 lazy_refcounts=off
Waiting for the VM to be ready (probing ssh)
...................
=====================================================================
Generated by BenchKit 2-3957
Executing tool itstools
Input is Eratosthenes-PT-500, examination is CTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r074-smll-155234739300301
=====================================================================
--------------------
preparation of the directory to be used:
/home/mcc/execution
total 1.2M
-rw-r--r-- 1 mcc users 3.3K Feb 10 23:26 CTLCardinality.txt
-rw-r--r-- 1 mcc users 18K Feb 10 23:26 CTLCardinality.xml
-rw-r--r-- 1 mcc users 2.7K Feb 6 20:55 CTLFireability.txt
-rw-r--r-- 1 mcc users 18K Feb 6 20:55 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K Mar 10 17:31 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 5.7K Mar 10 17:31 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 106 Feb 24 15:05 GlobalProperties.txt
-rw-r--r-- 1 mcc users 344 Feb 24 15:05 GlobalProperties.xml
-rw-r--r-- 1 mcc users 2.1K Feb 4 23:44 LTLCardinality.txt
-rw-r--r-- 1 mcc users 7.8K Feb 4 23:44 LTLCardinality.xml
-rw-r--r-- 1 mcc users 1.9K Feb 4 22:35 LTLFireability.txt
-rw-r--r-- 1 mcc users 8.1K Feb 4 22:35 LTLFireability.xml
-rw-r--r-- 1 mcc users 3.2K Feb 3 08:09 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 16K Feb 3 08:09 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 3.4K Jan 31 01:02 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 22K Jan 31 01:02 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Feb 4 22:20 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Feb 4 22:20 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Jan 29 09:34 equiv_col
-rw-r--r-- 1 mcc users 4 Jan 29 09:34 instance
-rw-r--r-- 1 mcc users 6 Jan 29 09:34 iscolored
-rw-r--r-- 1 mcc users 1006K Mar 10 17:31 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 Eratosthenes-PT-500-CTLCardinality-00
FORMULA_NAME Eratosthenes-PT-500-CTLCardinality-01
FORMULA_NAME Eratosthenes-PT-500-CTLCardinality-02
FORMULA_NAME Eratosthenes-PT-500-CTLCardinality-03
FORMULA_NAME Eratosthenes-PT-500-CTLCardinality-04
FORMULA_NAME Eratosthenes-PT-500-CTLCardinality-05
FORMULA_NAME Eratosthenes-PT-500-CTLCardinality-06
FORMULA_NAME Eratosthenes-PT-500-CTLCardinality-07
FORMULA_NAME Eratosthenes-PT-500-CTLCardinality-08
FORMULA_NAME Eratosthenes-PT-500-CTLCardinality-09
FORMULA_NAME Eratosthenes-PT-500-CTLCardinality-10
FORMULA_NAME Eratosthenes-PT-500-CTLCardinality-11
FORMULA_NAME Eratosthenes-PT-500-CTLCardinality-12
FORMULA_NAME Eratosthenes-PT-500-CTLCardinality-13
FORMULA_NAME Eratosthenes-PT-500-CTLCardinality-14
FORMULA_NAME Eratosthenes-PT-500-CTLCardinality-15
=== Now, execution of the tool begins
BK_START 1552817703347
Invoking ITS tools like this :CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.201903111103/bin/its-ctl-linux64, --gc-threshold, 2000000, --quiet, -i, /home/mcc/execution/CTLCardinality.pnml.gal, -t, CGAL, -ctl, /home/mcc/execution/CTLCardinality.ctl], workingDir=/home/mcc/execution]
its-ctl command run as :
/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.201903111103/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -i /home/mcc/execution/CTLCardinality.pnml.gal -t CGAL -ctl /home/mcc/execution/CTLCardinality.ctl
No direction supplied, using forward translation only.
Parsed 16 CTL formulae.
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
reachable,4.1316e+121,0.940765,20468,2,405,5,35320,6,0,2493,14184,0
Converting to forward existential form...Done !
original formula: ((AF((p44>=2)) * (AF((p228<=p335)) + EX((p344>=3)))) * !((((p436>=2)||(p56>=2))&&((p318<=1)&&(p248>=1)))))
=> equivalent forward existential formula: (([FwdG(Init,!((p44>=2)))] = FALSE * [FwdG((Init * !(EX((p344>=3)))),!((p228<=p335)))] = FALSE) * [(Init * (((p436>=2)||(p56>=2))&&((p318<=1)&&(p248>=1))))] = FALSE)
Reverse transition relation is exact ! Faster fixpoint algorithm enabled.
dead was empty
(forward)formula 0,0,25.3326,575592,1,0,411,5.20822e+06,18,5,10715,2.28946e+06,413
FORMULA Eratosthenes-PT-500-CTLCardinality-00 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Formula is FALSE !
***************************************
original formula: AF(AG(((p451<=1)||(p95<=1))))
=> equivalent forward existential formula: [FwdG(Init,!(!(E(TRUE U !(((p451<=1)||(p95<=1)))))))] = FALSE
dead was empty
(forward)formula 1,1,25.3342,575856,1,0,411,5.20822e+06,23,5,10720,2.28946e+06,414
FORMULA Eratosthenes-PT-500-CTLCardinality-01 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Formula is TRUE !
***************************************
original formula: A(((!(p182>=2))||((p329>=1)||(p314>=2))) U AG((p468>=1)))
=> equivalent forward existential formula: [((Init * !(EG(!(!(E(TRUE U !((p468>=1)))))))) * !(E(!(!(E(TRUE U !((p468>=1))))) U (!(((!(p182>=2))||((p329>=1)||(p314>=2)))) * !(!(E(TRUE U !((p468>=1)))))))))] != FALSE
(forward)formula 2,0,25.8983,579552,1,0,412,5.21006e+06,28,5,11536,2.29037e+06,420
FORMULA Eratosthenes-PT-500-CTLCardinality-02 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Formula is FALSE !
***************************************
original formula: !(EF(((!(p348<=p278))&&((p288>=2)&&(p213<=p117)))))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * ((!(p348<=p278))&&((p288>=2)&&(p213<=p117))))] = FALSE
(forward)formula 3,1,25.8991,579816,1,0,412,5.21006e+06,29,5,11540,2.29037e+06,420
FORMULA Eratosthenes-PT-500-CTLCardinality-03 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Formula is TRUE !
***************************************
original formula: AF(((p296>=2)&&((!(p91>=1))&&((p206>=2)||(p152>=1)))))
=> equivalent forward existential formula: [FwdG(Init,!(((p296>=2)&&((!(p91>=1))&&((p206>=2)||(p152>=1))))))] = FALSE
(forward)formula 4,0,25.9013,580080,1,0,412,5.21012e+06,31,5,11551,2.29052e+06,421
FORMULA Eratosthenes-PT-500-CTLCardinality-04 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Formula is FALSE !
***************************************
original formula: A(EX((p205>=2)) U EG((p57<=p164)))
=> equivalent forward existential formula: [((Init * !(EG(!(EG((p57<=p164)))))) * !(E(!(EG((p57<=p164))) U (!(EX((p205>=2))) * !(EG((p57<=p164)))))))] != FALSE
Hit Full ! (commute/partial/dont) 1669/0/13
(forward)formula 5,1,26.4018,585624,1,0,416,5.23662e+06,42,13,11978,2.31089e+06,429
FORMULA Eratosthenes-PT-500-CTLCardinality-05 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Formula is TRUE !
***************************************
original formula: EG((AX((p256<=1)) + EF((p358>=1))))
=> equivalent forward existential formula: [FwdG(Init,(!(EX(!((p256<=1)))) + E(TRUE U (p358>=1))))] != FALSE
(forward)formula 6,1,26.4043,585888,1,0,417,5.23678e+06,45,14,11979,2.31117e+06,433
FORMULA Eratosthenes-PT-500-CTLCardinality-06 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Formula is TRUE !
***************************************
original formula: EG((p432<=p301))
=> equivalent forward existential formula: [FwdG(Init,(p432<=p301))] != FALSE
Hit Full ! (commute/partial/dont) 1664/0/18
(forward)formula 7,1,26.9922,593016,1,0,418,5.2701e+06,52,16,12805,2.32624e+06,436
FORMULA Eratosthenes-PT-500-CTLCardinality-07 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Formula is TRUE !
***************************************
original formula: AG(AF((p377>=2)))
=> equivalent forward existential formula: [FwdG(FwdU(Init,TRUE),!((p377>=2)))] = FALSE
(forward)formula 8,0,26.993,593280,1,0,418,5.2701e+06,54,16,12807,2.32624e+06,439
FORMULA Eratosthenes-PT-500-CTLCardinality-08 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Formula is FALSE !
***************************************
original formula: !(EF(!(((p95>=1)||(p56<=p119)))))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * !(((p95>=1)||(p56<=p119))))] = FALSE
(forward)formula 9,0,26.9975,593280,1,0,421,5.27081e+06,56,18,12815,2.32748e+06,440
FORMULA Eratosthenes-PT-500-CTLCardinality-09 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Formula is FALSE !
***************************************
original formula: EG((p394>=1))
=> equivalent forward existential formula: [FwdG(Init,(p394>=1))] != FALSE
dead was empty
(forward)formula 10,0,26.9979,593280,1,0,422,5.27081e+06,57,19,12815,2.32751e+06,441
FORMULA Eratosthenes-PT-500-CTLCardinality-10 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Formula is FALSE !
***************************************
original formula: AG(TRUE)
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * !(TRUE))] = FALSE
(forward)formula 11,1,26.9979,593280,1,0,422,5.27081e+06,57,19,12815,2.32751e+06,441
FORMULA Eratosthenes-PT-500-CTLCardinality-11 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Formula is TRUE !
***************************************
original formula: AF((!((p344>=1)) + EX((p99>=3))))
=> equivalent forward existential formula: [FwdG(Init,!((!((p344>=1)) + EX((p99>=3)))))] = FALSE
dead was empty
(forward)formula 12,1,27.0004,593280,1,0,424,5.27092e+06,60,21,12817,2.32811e+06,443
FORMULA Eratosthenes-PT-500-CTLCardinality-12 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Formula is TRUE !
***************************************
original formula: EG(AX(((p217<=p80)||(p114<=p140))))
=> equivalent forward existential formula: [FwdG(Init,!(EX(!(((p217<=p80)||(p114<=p140))))))] != FALSE
(forward)formula 13,1,100.544,2122680,1,0,1639,1.57785e+07,65,834,12829,1.18261e+07,1256
FORMULA Eratosthenes-PT-500-CTLCardinality-13 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Formula is TRUE !
***************************************
original formula: EF(((((p395>=1)||(p56<=1))&&(p189>=2))&&(!((p341>=1)&&(p489<=p395)))))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * ((((p395>=1)||(p56<=1))&&(p189>=2))&&(!((p341>=1)&&(p489<=p395)))))] != FALSE
(forward)formula 14,0,100.545,2122680,1,0,1639,1.57786e+07,66,834,12837,1.18261e+07,1256
FORMULA Eratosthenes-PT-500-CTLCardinality-14 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Formula is FALSE !
***************************************
original formula: FALSE
=> equivalent forward existential formula: [(Init * FALSE)] != FALSE
(forward)formula 15,0,100.545,2122680,1,0,1639,1.57786e+07,66,834,12837,1.18261e+07,1256
FORMULA Eratosthenes-PT-500-CTLCardinality-15 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Formula is FALSE !
***************************************
BK_STOP 1552817808634
--------------------
content from stderr:
+ export BINDIR=/home/mcc/BenchKit/
+ BINDIR=/home/mcc/BenchKit/
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ CTLCardinality = StateSpace ]]
+ /home/mcc/BenchKit//runeclipse.sh /home/mcc/execution CTLCardinality -its -ltsminpath /home/mcc/BenchKit//lts_install_dir/ -smt
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
+ /home/mcc/BenchKit//itstools/its-tools -data /home/mcc/execution/workspace -pnfolder /home/mcc/execution -examination CTLCardinality -z3path /home/mcc/BenchKit//z3/bin/z3 -yices2path /home/mcc/BenchKit//yices/bin/yices -its -ltsminpath /home/mcc/BenchKit//lts_install_dir/ -smt -vmargs -Dosgi.locking=none -Declipse.stateSaveDelayInterval=-1 -Dosgi.configuration.area=/tmp/.eclipse -Xss8m -Xms40m -Xmx8192m -Dfile.encoding=UTF-8 -Dosgi.requiredJavaVersion=1.6
Mar 17, 2019 10:15:05 AM fr.lip6.move.gal.application.Application start
INFO: Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, CTLCardinality, -z3path, /home/mcc/BenchKit//z3/bin/z3, -yices2path, /home/mcc/BenchKit//yices/bin/yices, -its, -ltsminpath, /home/mcc/BenchKit//lts_install_dir/, -smt]
Mar 17, 2019 10:15:05 AM fr.lip6.move.gal.application.MccTranslator transformPNML
INFO: Parsing pnml file : /home/mcc/execution/model.pnml
Mar 17, 2019 10:15:05 AM fr.lip6.move.gal.nupn.PTNetReader loadFromXML
INFO: Load time of PNML (sax parser for PT used): 232 ms
Mar 17, 2019 10:15:05 AM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 499 places.
Mar 17, 2019 10:15:06 AM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 2191 transitions.
Mar 17, 2019 10:15:06 AM fr.lip6.move.gal.instantiate.DomainAnalyzer computeVariableDomains
INFO: Found a total of 42 fixed domain variables (out of 499 variables) in GAL type Eratosthenes_PT_500
Mar 17, 2019 10:15:06 AM fr.lip6.move.gal.instantiate.Simplifier printConstantVars
INFO: Found a total of 42 constant array cells/variables (out of 499 variables) in type Eratosthenes_PT_500
Mar 17, 2019 10:15:06 AM fr.lip6.move.gal.instantiate.Simplifier printConstantVars
INFO: p397,p461,p293,p317,p389,p349,p281,p379,p353,p419,p487,p263,p467,p257,p277,p337,p367,p431,p449,p383,p271,p269,p347,p359,p499,p433,p283,p463,p331,p443,p439,p311,p491,p457,p307,p401,p409,p251,p313,p421,p373,p479,
Mar 17, 2019 10:15:06 AM fr.lip6.move.gal.instantiate.DomainAnalyzer computeVariableDomains
INFO: Found a total of 95 fixed domain variables (out of 499 variables) in GAL type Eratosthenes_PT_500
Mar 17, 2019 10:15:06 AM fr.lip6.move.gal.instantiate.Simplifier printConstantVars
INFO: Found a total of 95 constant array cells/variables (out of 499 variables) in type Eratosthenes_PT_500
Mar 17, 2019 10:15:06 AM fr.lip6.move.gal.instantiate.Simplifier printConstantVars
INFO: p397,p461,p149,p13,p293,p317,p389,p131,p349,p97,p151,p71,p23,p281,p109,p379,p127,p113,p163,p353,p419,p137,p83,p67,p239,p487,p263,p467,p199,p257,p277,p337,p19,p31,p367,p431,p449,p191,p383,p271,p197,p269,p73,p347,p359,p167,p233,p227,p499,p47,p433,p283,p17,p463,p331,p211,p443,p193,p439,p41,p107,p241,p311,p173,p37,p2,p491,p223,p457,p181,p307,p7,p401,p409,p11,p5,p251,p29,p103,p59,p79,p43,p313,p157,p229,p421,p373,p179,p101,p53,p61,p139,p3,p479,p89,
Mar 17, 2019 10:15:06 AM fr.lip6.move.gal.instantiate.Simplifier simplifyConstantVariables
INFO: Removed 95 constant variables :p397=1, p461=1, p149=1, p13=1, p293=1, p317=1, p389=1, p131=1, p349=1, p97=1, p151=1, p71=1, p23=1, p281=1, p109=1, p379=1, p127=1, p113=1, p163=1, p353=1, p419=1, p137=1, p83=1, p67=1, p239=1, p487=1, p263=1, p467=1, p199=1, p257=1, p277=1, p337=1, p19=1, p31=1, p367=1, p431=1, p449=1, p191=1, p383=1, p271=1, p197=1, p269=1, p73=1, p347=1, p359=1, p167=1, p233=1, p227=1, p499=1, p47=1, p433=1, p283=1, p17=1, p463=1, p331=1, p211=1, p443=1, p193=1, p439=1, p41=1, p107=1, p241=1, p311=1, p173=1, p37=1, p2=1, p491=1, p223=1, p457=1, p181=1, p307=1, p7=1, p401=1, p409=1, p11=1, p5=1, p251=1, p29=1, p103=1, p59=1, p79=1, p43=1, p313=1, p157=1, p229=1, p421=1, p373=1, p179=1, p101=1, p53=1, p61=1, p139=1, p3=1, p479=1, p89=1
Mar 17, 2019 10:15:06 AM fr.lip6.move.gal.instantiate.Simplifier simplifyConstantVariables
INFO: Simplified 928 expressions due to constant valuations.
Mar 17, 2019 10:15:06 AM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 490 ms
Mar 17, 2019 10:15:06 AM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/CTLCardinality.pnml.gal : 43 ms
Mar 17, 2019 10:15:06 AM fr.lip6.move.serialization.SerializationUtil serializePropertiesForITSCTLTools
INFO: Time to serialize properties into /home/mcc/execution/CTLCardinality.ctl : 2 ms
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="Eratosthenes-PT-500"
export BK_EXAMINATION="CTLCardinality"
export BK_TOOL="itstools"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"
# 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 2-3957"
echo " Executing tool itstools"
echo " Input is Eratosthenes-PT-500, examination is CTLCardinality"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r074-smll-155234739300301"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"
tar xzf /home/mcc/BenchKit/INPUTS/Eratosthenes-PT-500.tgz
mv Eratosthenes-PT-500 execution
cd execution
if [ "CTLCardinality" = "GlobalProperties" ] ; then
rm -f GenericPropertiesVerdict.xml
fi
if [ "CTLCardinality" = "UpperBounds" ] ; 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 [ "CTLCardinality" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "CTLCardinality" != "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 "CTLCardinality.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property CTLCardinality.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "CTLCardinality.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 '
echo "FORMULA_NAME $x"
done
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 ;