About the Execution of ITS-Tools.M for DiscoveryGPU-PT-09a
Execution Summary | |||||
Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
1947.970 | 137765.00 | 143912.00 | 192.10 | FFTFFFFFTFTTFTFT | normal |
Execution Chart
We display below the execution chart for this examination (boot time has been removed).
Trace from the execution
Formatting '/mnt/tpsp/fkordon/mcc2019-input.r193-ebro-155234659300319.qcow2', fmt=qcow2 size=4294967296 backing_file='/mnt/tpsp/fkordon/mcc2019-input.qcow2' encryption=off cluster_size=65536 lazy_refcounts=off
Waiting for the VM to be ready (probing ssh)
.....................
=====================================================================
Generated by BenchKit 2-3954
Executing tool itstoolsm
Input is DiscoveryGPU-PT-09a, examination is CTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r193-ebro-155234659300319
=====================================================================
--------------------
preparation of the directory to be used:
/home/mcc/execution
total 200K
-rw-r--r-- 1 mcc users 3.7K Feb 10 21:58 CTLCardinality.txt
-rw-r--r-- 1 mcc users 22K Feb 10 21:58 CTLCardinality.xml
-rw-r--r-- 1 mcc users 2.6K Feb 6 18:29 CTLFireability.txt
-rw-r--r-- 1 mcc users 18K Feb 6 18:29 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K Mar 10 17:31 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.3K 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 2.4K Feb 4 23:34 LTLCardinality.txt
-rw-r--r-- 1 mcc users 11K Feb 4 23:34 LTLCardinality.xml
-rw-r--r-- 1 mcc users 1.9K Feb 4 22:34 LTLFireability.txt
-rw-r--r-- 1 mcc users 9.7K Feb 4 22:34 LTLFireability.xml
-rw-r--r-- 1 mcc users 3.4K Feb 3 07:26 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 17K Feb 3 07:26 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 2.6K Jan 30 23:50 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 16K Jan 30 23:50 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Feb 4 22:19 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Feb 4 22:19 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 32K 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 DiscoveryGPU-PT-09a-CTLCardinality-00
FORMULA_NAME DiscoveryGPU-PT-09a-CTLCardinality-01
FORMULA_NAME DiscoveryGPU-PT-09a-CTLCardinality-02
FORMULA_NAME DiscoveryGPU-PT-09a-CTLCardinality-03
FORMULA_NAME DiscoveryGPU-PT-09a-CTLCardinality-04
FORMULA_NAME DiscoveryGPU-PT-09a-CTLCardinality-05
FORMULA_NAME DiscoveryGPU-PT-09a-CTLCardinality-06
FORMULA_NAME DiscoveryGPU-PT-09a-CTLCardinality-07
FORMULA_NAME DiscoveryGPU-PT-09a-CTLCardinality-08
FORMULA_NAME DiscoveryGPU-PT-09a-CTLCardinality-09
FORMULA_NAME DiscoveryGPU-PT-09a-CTLCardinality-10
FORMULA_NAME DiscoveryGPU-PT-09a-CTLCardinality-11
FORMULA_NAME DiscoveryGPU-PT-09a-CTLCardinality-12
FORMULA_NAME DiscoveryGPU-PT-09a-CTLCardinality-13
FORMULA_NAME DiscoveryGPU-PT-09a-CTLCardinality-14
FORMULA_NAME DiscoveryGPU-PT-09a-CTLCardinality-15
=== Now, execution of the tool begins
BK_START 1553613239118
Running greatSPN : CommandLine [args=[/home/mcc/BenchKit//greatspn//bin/pinvar, /home/mcc/execution/gspn], workingDir=/home/mcc/execution]
Run of greatSPN captured in /home/mcc/execution/outPut.txt
Running greatSPN : CommandLine [args=[/home/mcc/BenchKit//greatspn//bin/RGMEDD2, /home/mcc/execution/gspn, -META, -varord-only], workingDir=/home/mcc/execution]
Run of greatSPN captured in /home/mcc/execution/outPut.txt
Using order generated by GreatSPN with heuristic : META
Invoking ITS tools like this :CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.201903251645/bin/its-ctl-linux64, --gc-threshold, 2000000, --quiet, -i, /home/mcc/execution/CTLCardinality.pnml.gal, -t, CGAL, -ctl, /home/mcc/execution/CTLCardinality.ctl, --load-order, /home/mcc/execution/model.ord], workingDir=/home/mcc/execution]
its-ctl command run as :
/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.201903251645/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -i /home/mcc/execution/CTLCardinality.pnml.gal -t CGAL -ctl /home/mcc/execution/CTLCardinality.ctl --load-order /home/mcc/execution/model.ord
Successfully loaded order from file /home/mcc/execution/model.ord
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,2.35795e+09,19.8366,317700,2,28203,5,1.98456e+06,6,0,479,1.05037e+06,0
Converting to forward existential form...Done !
original formula: AG(((p3==0)||(p40==1)))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * !(((p3==0)||(p40==1))))] = FALSE
(forward)formula 0,0,19.9114,317700,1,0,8,1.98456e+06,9,2,490,1.05037e+06,1
FORMULA DiscoveryGPU-PT-09a-CTLCardinality-00 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !
***************************************
original formula: AG((((p85==0)||(p83==1))||(p58>=1)))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * !((((p85==0)||(p83==1))||(p58>=1))))] = FALSE
(forward)formula 1,0,19.99,317700,1,0,11,1.98456e+06,11,4,505,1.05037e+06,2
FORMULA DiscoveryGPU-PT-09a-CTLCardinality-01 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !
***************************************
original formula: !(AG(AF(((p1==0)||(p44==1)))))
=> equivalent forward existential formula: [FwdG(FwdU(Init,TRUE),!(((p1==0)||(p44==1))))] != FALSE
Hit Full ! (commute/partial/dont) 122/5/5
(forward)formula 2,1,39.8366,422624,1,0,17,1.98456e+06,24,6,2272,2.4822e+06,12
FORMULA DiscoveryGPU-PT-09a-CTLCardinality-02 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is TRUE !
***************************************
original formula: AG((((p64==0)||(p74==1))||((p26==0)||(p32==1))))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * !((((p64==0)||(p74==1))||((p26==0)||(p32==1)))))] = FALSE
(forward)formula 3,0,39.994,425000,1,0,20,1.98456e+06,26,8,2286,2.50751e+06,13
FORMULA DiscoveryGPU-PT-09a-CTLCardinality-03 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !
***************************************
original formula: EF(((p27>=2)||(p37>=2)))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * ((p27>=2)||(p37>=2)))] != FALSE
(forward)formula 4,0,40.0001,425000,1,0,20,1.98456e+06,27,8,2289,2.50751e+06,13
FORMULA DiscoveryGPU-PT-09a-CTLCardinality-04 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !
***************************************
original formula: (E(((p16==0)||(p85==1)) U (p28>=2)) * A(((p39==0)||(p40==1)) U ((p62==0)||(p71==1))))
=> equivalent forward existential formula: [(((Init * E(((p16==0)||(p85==1)) U (p28>=2))) * !(EG(!(((p62==0)||(p71==1)))))) * !(E(!(((p62==0)||(p71==1))) U (!(((p39==0)||(p40==1))) * !(((p62==0)||(p71==1)))))))] != FALSE
Reverse transition relation is NOT exact ! Due to transitions t109, t110, t111, t112, t113, t114, t115, t116, t117, t118, t119, t120, t121, t122, t123, t124, t125, t126, Intersection with reachable at each step enabled. (destroyed/reverse/intersect/total) :0/109/18/127
(forward)formula 5,0,55.786,668664,1,0,290,3.25412e+06,302,165,2879,4.62691e+06,429
FORMULA DiscoveryGPU-PT-09a-CTLCardinality-05 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !
***************************************
original formula: EF((AX((p20>=3)) * AG((p23>=1))))
=> equivalent forward existential formula: [((FwdU(Init,TRUE) * !(EX(!((p20>=3))))) * !(E(TRUE U !((p23>=1)))))] != FALSE
(forward)formula 6,0,69.275,888924,1,0,294,4.37886e+06,309,167,2940,5.24723e+06,437
FORMULA DiscoveryGPU-PT-09a-CTLCardinality-06 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !
***************************************
original formula: (E((((p2==0)||(p47==1))||((p45==0)||(p63==1))) U (((p48==0)||(p58==1))||((p38==0)||(p62==1)))) * (EF((p44>=3)) * A(((p63==0)||(p39==1)) U ((p41==0)||(p30==1)))))
=> equivalent forward existential formula: [((((Init * E((((p2==0)||(p47==1))||((p45==0)||(p63==1))) U (((p48==0)||(p58==1))||((p38==0)||(p62==1))))) * E(TRUE U (p44>=3))) * !(EG(!(((p41==0)||(p30==1)))))) * !(E(!(((p41==0)||(p30==1))) U (!(((p63==0)||(p39==1))) * !(((p41==0)||(p30==1)))))))] != FALSE
(forward)formula 7,0,85.702,1095900,1,0,458,6.02479e+06,320,249,2957,6.5773e+06,652
FORMULA DiscoveryGPU-PT-09a-CTLCardinality-07 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !
***************************************
original formula: EF((p41>=1))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * (p41>=1))] != FALSE
(forward)formula 8,1,85.7038,1096164,1,0,459,6.02487e+06,321,250,2957,6.5774e+06,653
FORMULA DiscoveryGPU-PT-09a-CTLCardinality-08 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is TRUE !
***************************************
original formula: AG(((!(p56>=1))||(((p36==0)||(p72==1))&&((p61==0)||(p77==1)))))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * !(((!(p56>=1))||(((p36==0)||(p72==1))&&((p61==0)||(p77==1))))))] = FALSE
(forward)formula 9,0,86.2623,1101972,1,0,462,6.05554e+06,323,252,2974,6.63456e+06,654
FORMULA DiscoveryGPU-PT-09a-CTLCardinality-09 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !
***************************************
original formula: !(EF((p23>=3)))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * (p23>=3))] = FALSE
(forward)formula 10,1,86.2793,1102764,1,0,462,6.05554e+06,324,252,2975,6.63456e+06,654
FORMULA DiscoveryGPU-PT-09a-CTLCardinality-10 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is TRUE !
***************************************
original formula: E(((p63==0)||(p8==1)) U ((!((p3==0)||(p45==1)))&&(!((p16==0)||(p77==1)))))
=> equivalent forward existential formula: [(FwdU(Init,((p63==0)||(p8==1))) * ((!((p3==0)||(p45==1)))&&(!((p16==0)||(p77==1)))))] != FALSE
Hit Full ! (commute/partial/dont) 121/0/6
(forward)formula 11,1,116.024,1467348,1,0,465,8.2025e+06,332,253,3086,7.93514e+06,658
FORMULA DiscoveryGPU-PT-09a-CTLCardinality-11 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is TRUE !
***************************************
original formula: AG(A(((p41==0)||(p70==1)) U ((p76==0)||(p10==1))))
=> equivalent forward existential formula: ([(FwdU(FwdU(Init,TRUE),!(((p76==0)||(p10==1)))) * (!(((p41==0)||(p70==1))) * !(((p76==0)||(p10==1)))))] = FALSE * [FwdG(FwdU(Init,TRUE),!(((p76==0)||(p10==1))))] = FALSE)
Hit Full ! (commute/partial/dont) 122/5/5
(forward)formula 12,0,118.545,1495080,1,0,466,8.39446e+06,340,254,3178,8.07678e+06,662
FORMULA DiscoveryGPU-PT-09a-CTLCardinality-12 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !
***************************************
original formula: AG(AX(!((p29>=3))))
=> equivalent forward existential formula: [(EY(FwdU(Init,TRUE)) * (p29>=3))] = FALSE
(forward)formula 13,1,118.545,1495080,1,0,466,8.39446e+06,341,254,3179,8.07678e+06,662
FORMULA DiscoveryGPU-PT-09a-CTLCardinality-13 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is TRUE !
***************************************
original formula: (AG(((((p45==0)||(p75==1))&&((p18==0)||(p3==1)))||((p46==0)||(p7==1)))) + !(EF(((p61==0)||(p50==1)))))
=> equivalent forward existential formula: [(FwdU((Init * !(!(E(TRUE U !(((((p45==0)||(p75==1))&&((p18==0)||(p3==1)))||((p46==0)||(p7==1)))))))),TRUE) * ((p61==0)||(p50==1)))] = FALSE
(forward)formula 14,0,132.279,1694400,1,0,472,9.45449e+06,345,258,3253,8.63345e+06,673
FORMULA DiscoveryGPU-PT-09a-CTLCardinality-14 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !
***************************************
original formula: EF((((p64>=1)&&(p6>=1)) + AX((p71>=2))))
=> equivalent forward existential formula: ([(FwdU(Init,TRUE) * ((p64>=1)&&(p6>=1)))] != FALSE + [(FwdU(Init,TRUE) * !(EX(!((p71>=2)))))] != FALSE)
(forward)formula 15,1,132.331,1695456,1,0,474,9.45863e+06,346,259,3254,8.63765e+06,674
FORMULA DiscoveryGPU-PT-09a-CTLCardinality-15 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is TRUE !
***************************************
BK_STOP 1553613376883
--------------------
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/ -greatspnpath /home/mcc/BenchKit//greatspn/ -order META -manyOrder -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/ -greatspnpath /home/mcc/BenchKit//greatspn/ -order META -manyOrder -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 26, 2019 3:14:02 PM 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/, -greatspnpath, /home/mcc/BenchKit//greatspn/, -order, META, -manyOrder, -smt]
Mar 26, 2019 3:14:02 PM fr.lip6.move.gal.application.MccTranslator transformPNML
INFO: Parsing pnml file : /home/mcc/execution/model.pnml
Mar 26, 2019 3:14:02 PM fr.lip6.move.gal.nupn.PTNetReader loadFromXML
INFO: Load time of PNML (sax parser for PT used): 97 ms
Mar 26, 2019 3:14:02 PM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 93 places.
Mar 26, 2019 3:14:02 PM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 127 transitions.
Mar 26, 2019 3:14:02 PM fr.lip6.move.gal.pnml.togal.PnmlToGalTransformer transform
INFO: Found NUPN structural information;
Mar 26, 2019 3:14:02 PM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/model.pnml.img.gal : 25 ms
Mar 26, 2019 3:14:02 PM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 110 ms
Mar 26, 2019 3:14:02 PM fr.lip6.move.gal.semantics.DeterministicNextBuilder getDeterministicNext
INFO: Input system was already deterministic with 127 transitions.
Mar 26, 2019 3:14:02 PM fr.lip6.move.gal.application.StructuralToGreatSPN handlePage
INFO: Transformed 93 places.
Mar 26, 2019 3:14:02 PM fr.lip6.move.gal.application.StructuralToGreatSPN handlePage
INFO: Transformed 127 transitions.
Mar 26, 2019 3:14:03 PM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/CTLCardinality.pnml.gal : 5 ms
Mar 26, 2019 3:14:03 PM 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="DiscoveryGPU-PT-09a"
export BK_EXAMINATION="CTLCardinality"
export BK_TOOL="itstoolsm"
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 2-3954"
echo " Executing tool itstoolsm"
echo " Input is DiscoveryGPU-PT-09a, 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 r193-ebro-155234659300319"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"
tar xzf /home/mcc/BenchKit/INPUTS/DiscoveryGPU-PT-09a.tgz
mv DiscoveryGPU-PT-09a 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 ;