fond
Model Checking Contest 2018
8th edition, Bratislava, Slovakia, June 26, 2018
Execution of r273-smll-152749149500059
Last Updated
June 26, 2018

About the Execution of ITS-Tools.L for ASLink-PT-04a

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
15749.670 3600000.00 6127076.00 7378.10 FFFTFTFFTFFFFFT? normal

Execution Chart

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

Trace from the execution

Waiting for the VM to be ready (probing ssh)
......................
/home/mcc/execution
total 604K
-rw-r--r-- 1 mcc users 3.1K May 29 16:53 CTLCardinality.txt
-rw-r--r-- 1 mcc users 17K May 29 16:53 CTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K May 28 11:14 CTLFireability.txt
-rw-r--r-- 1 mcc users 14K May 28 11:14 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K May 24 11:17 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 5.6K May 24 11:17 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 2.3K May 28 09:22 LTLCardinality.txt
-rw-r--r-- 1 mcc users 11K May 28 09:22 LTLCardinality.xml
-rw-r--r-- 1 mcc users 1.8K May 28 07:36 LTLFireability.txt
-rw-r--r-- 1 mcc users 9.4K May 28 07:36 LTLFireability.xml
-rw-r--r-- 1 mcc users 1 May 24 11:17 NewModel
-rw-r--r-- 1 mcc users 3.9K May 27 05:07 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 21K May 27 05:07 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 104 May 26 06:29 ReachabilityDeadlock.txt
-rw-r--r-- 1 mcc users 342 May 26 06:29 ReachabilityDeadlock.xml
-rw-r--r-- 1 mcc users 2.3K May 26 06:34 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 13K May 26 06:34 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K May 28 07:31 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K May 28 07:31 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 24 11:17 equiv_col
-rw-r--r-- 1 mcc users 4 May 24 11:17 instance
-rw-r--r-- 1 mcc users 6 May 24 11:17 iscolored
-rw-r--r-- 1 mcc users 436K May 24 11:17 model.pnml
=====================================================================
Generated by BenchKit 2-3637
Executing tool itstoolsl
Input is ASLink-PT-04a, examination is LTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r273-smll-152749149500059

=====================================================================

--------------------
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 ASLink-PT-04a-LTLCardinality-00
FORMULA_NAME ASLink-PT-04a-LTLCardinality-01
FORMULA_NAME ASLink-PT-04a-LTLCardinality-02
FORMULA_NAME ASLink-PT-04a-LTLCardinality-03
FORMULA_NAME ASLink-PT-04a-LTLCardinality-04
FORMULA_NAME ASLink-PT-04a-LTLCardinality-05
FORMULA_NAME ASLink-PT-04a-LTLCardinality-06
FORMULA_NAME ASLink-PT-04a-LTLCardinality-07
FORMULA_NAME ASLink-PT-04a-LTLCardinality-08
FORMULA_NAME ASLink-PT-04a-LTLCardinality-09
FORMULA_NAME ASLink-PT-04a-LTLCardinality-10
FORMULA_NAME ASLink-PT-04a-LTLCardinality-11
FORMULA_NAME ASLink-PT-04a-LTLCardinality-12
FORMULA_NAME ASLink-PT-04a-LTLCardinality-13
FORMULA_NAME ASLink-PT-04a-LTLCardinality-14
FORMULA_NAME ASLink-PT-04a-LTLCardinality-15

=== Now, execution of the tool begins

BK_START 1527779165363

Using solver Z3 to compute partial order matrices.
Built C files in :
/home/mcc/execution
Invoking ITS tools like this :CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.201805241334/bin/its-ltl-linux64, --gc-threshold, 2000000, -i, /home/mcc/execution/LTLCardinality.pnml.gal, -t, CGAL, -LTL, /home/mcc/execution/LTLCardinality.ltl, -c, -stutter-deadlock], workingDir=/home/mcc/execution]

its-ltl command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.201805241334/bin/its-ltl-linux64 --gc-threshold 2000000 -i /home/mcc/execution/LTLCardinality.pnml.gal -t CGAL -LTL /home/mcc/execution/LTLCardinality.ltl -c -stutter-deadlock
Read 16 LTL properties
Checking formula 0 : !(((G(F("((i43.u149.p895==0)||(u70.p411==1))")))U(F(F("(u5.p60>=1)")))))
Formula 0 simplified : !(GF"((i43.u149.p895==0)||(u70.p411==1))" U F"(u5.p60>=1)")
built 62 ordering constraints for composite.
built 75 ordering constraints for composite.
built 16 ordering constraints for composite.
built 4 ordering constraints for composite.
built 4 ordering constraints for composite.
built 4 ordering constraints for composite.
built 7 ordering constraints for composite.
built 75 ordering constraints for composite.
built 16 ordering constraints for composite.
built 4 ordering constraints for composite.
built 4 ordering constraints for composite.
built 4 ordering constraints for composite.
built 11 ordering constraints for composite.
built 75 ordering constraints for composite.
built 16 ordering constraints for composite.
built 4 ordering constraints for composite.
built 4 ordering constraints for composite.
built 4 ordering constraints for composite.
built 11 ordering constraints for composite.
built 11 ordering constraints for composite.
built 75 ordering constraints for composite.
built 16 ordering constraints for composite.
built 4 ordering constraints for composite.
built 4 ordering constraints for composite.
built 4 ordering constraints for composite.
built 120 ordering constraints for composite.
Running compilation step : CommandLine [args=[gcc, -c, -I/home/mcc/BenchKit//lts_install_dir//include, -I., -std=c99, -fPIC, -O3, model.c], workingDir=/home/mcc/execution]
Compilation finished in 20296 ms.
Running link step : CommandLine [args=[gcc, -shared, -o, gal.so, model.o], workingDir=/home/mcc/execution]
Link finished in 61 ms.
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=1, -p, --pins-guards, --when, --ltl, ([](<>((LTLAP0==true))))U(<>(<>((LTLAP1==true)))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 45273 ms.
FORMULA ASLink-PT-04a-LTLCardinality-00 FALSE TECHNIQUES PARTIAL_ORDER EXPLICIT LTSMIN SAT_SMT
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=1, --when, --ltl, X(((LTLAP2==true))U(X((LTLAP3==true)))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 208 ms.
FORMULA ASLink-PT-04a-LTLCardinality-01 FALSE TECHNIQUES PARTIAL_ORDER EXPLICIT LTSMIN SAT_SMT
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=1, -p, --pins-guards, --when, --ltl, (LTLAP4==true), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 43176 ms.
FORMULA ASLink-PT-04a-LTLCardinality-02 FALSE TECHNIQUES PARTIAL_ORDER EXPLICIT LTSMIN SAT_SMT
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=1, --when, --ltl, X(([]((LTLAP5==true)))U(<>((LTLAP6==true)))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 81 ms.
FORMULA ASLink-PT-04a-LTLCardinality-03 TRUE TECHNIQUES PARTIAL_ORDER EXPLICIT LTSMIN SAT_SMT
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=1, -p, --pins-guards, --when, --ltl, (LTLAP7==true), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 42850 ms.
FORMULA ASLink-PT-04a-LTLCardinality-04 FALSE TECHNIQUES PARTIAL_ORDER EXPLICIT LTSMIN SAT_SMT
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=1, --when, --ltl, X((LTLAP8==true)), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 81 ms.
FORMULA ASLink-PT-04a-LTLCardinality-05 TRUE TECHNIQUES PARTIAL_ORDER EXPLICIT LTSMIN SAT_SMT
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=1, --when, --ltl, <>((X((LTLAP9==true)))U(X((LTLAP10==true)))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 143 ms.
FORMULA ASLink-PT-04a-LTLCardinality-06 FALSE TECHNIQUES PARTIAL_ORDER EXPLICIT LTSMIN SAT_SMT
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=1, --when, --ltl, ([](<>((LTLAP11==true))))U(X((LTLAP12==true))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 146 ms.
FORMULA ASLink-PT-04a-LTLCardinality-07 FALSE TECHNIQUES PARTIAL_ORDER EXPLICIT LTSMIN SAT_SMT
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=1, -p, --pins-guards, --when, --ltl, (LTLAP13==true), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 42557 ms.
FORMULA ASLink-PT-04a-LTLCardinality-08 TRUE TECHNIQUES PARTIAL_ORDER EXPLICIT LTSMIN SAT_SMT
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=1, -p, --pins-guards, --when, --ltl, (((LTLAP14==true))U((LTLAP15==true)))U([]((LTLAP16==true))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 47679 ms.
FORMULA ASLink-PT-04a-LTLCardinality-09 FALSE TECHNIQUES PARTIAL_ORDER EXPLICIT LTSMIN SAT_SMT
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=1, -p, --pins-guards, --when, --ltl, (LTLAP17==true), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 42548 ms.
FORMULA ASLink-PT-04a-LTLCardinality-10 FALSE TECHNIQUES PARTIAL_ORDER EXPLICIT LTSMIN SAT_SMT
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=1, -p, --pins-guards, --when, --ltl, (LTLAP18==true), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 42463 ms.
FORMULA ASLink-PT-04a-LTLCardinality-11 FALSE TECHNIQUES PARTIAL_ORDER EXPLICIT LTSMIN SAT_SMT
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=1, -p, --pins-guards, --when, --ltl, ((LTLAP19==true))U(<>([]((LTLAP20==true)))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 64570 ms.
FORMULA ASLink-PT-04a-LTLCardinality-12 FALSE TECHNIQUES PARTIAL_ORDER EXPLICIT LTSMIN SAT_SMT
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=1, -p, --pins-guards, --when, --ltl, <>((LTLAP21==true)), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 43494 ms.
FORMULA ASLink-PT-04a-LTLCardinality-13 FALSE TECHNIQUES PARTIAL_ORDER EXPLICIT LTSMIN SAT_SMT
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=1, -p, --pins-guards, --when, --ltl, (LTLAP22==true), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 42585 ms.
FORMULA ASLink-PT-04a-LTLCardinality-14 TRUE TECHNIQUES PARTIAL_ORDER EXPLICIT LTSMIN SAT_SMT
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=1, -p, --pins-guards, --when, --ltl, ([](<>((LTLAP23==true))))U((LTLAP24==true)), --buchi-type=spotba], workingDir=/home/mcc/execution]
WARNING : LTSmin timed out (>225 s) on command CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=1, -p, --pins-guards, --when, --ltl, ([](<>((LTLAP23==true))))U((LTLAP24==true)), --buchi-type=spotba], workingDir=/home/mcc/execution]
Retrying LTSmin with larger timeout 1800 s
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=1, -p, --pins-guards, --when, --ltl, ([](<>((LTLAP23==true))))U((LTLAP24==true)), --buchi-type=spotba], workingDir=/home/mcc/execution]
WARNING : LTSmin timed out (>1800 s) on command CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=1, -p, --pins-guards, --when, --ltl, ([](<>((LTLAP23==true))))U((LTLAP24==true)), --buchi-type=spotba], workingDir=/home/mcc/execution]

BK_TIME_CONFINEMENT_REACHED

--------------------
content from stderr:

+ export BINDIR=/home/mcc/BenchKit/
+ BINDIR=/home/mcc/BenchKit/
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ /home/mcc/BenchKit//runeclipse.sh /home/mcc/execution LTLCardinality -its -ltsminpath /home/mcc/BenchKit//lts_install_dir/ -louvain -smt
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
+ /home/mcc/BenchKit//itstools/its-tools -consoleLog -data /home/mcc/execution/workspace -pnfolder /home/mcc/execution -examination LTLCardinality -z3path /home/mcc/BenchKit//z3/bin/z3 -yices2path /home/mcc/BenchKit//yices/bin/yices -its -ltsminpath /home/mcc/BenchKit//lts_install_dir/ -louvain -smt -vmargs -Dosgi.locking=none -Declipse.stateSaveDelayInterval=-1 -Dosgi.configuration.area=/tmp/.eclipse -Xss8m -Xms40m -Xmx8192m -Dfile.encoding=UTF-8 -Dosgi.requiredJavaVersion=1.6
May 31, 2018 3:06:07 PM fr.lip6.move.gal.application.Application start
INFO: Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, LTLCardinality, -z3path, /home/mcc/BenchKit//z3/bin/z3, -yices2path, /home/mcc/BenchKit//yices/bin/yices, -its, -ltsminpath, /home/mcc/BenchKit//lts_install_dir/, -louvain, -smt]
May 31, 2018 3:06:07 PM fr.lip6.move.gal.application.MccTranslator transformPNML
INFO: Parsing pnml file : /home/mcc/execution/model.pnml
May 31, 2018 3:06:07 PM fr.lip6.move.gal.nupn.PTNetReader loadFromXML
INFO: Load time of PNML (sax parser for PT used): 298 ms
May 31, 2018 3:06:07 PM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 1016 places.
May 31, 2018 3:06:08 PM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 1554 transitions.
May 31, 2018 3:06:08 PM fr.lip6.move.gal.pnml.togal.PnmlToGalTransformer transform
INFO: Found NUPN structural information;
May 31, 2018 3:06:08 PM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/model.pnml.img.gal : 56 ms
May 31, 2018 3:06:08 PM fr.lip6.move.gal.application.MccTranslator applyOrder
INFO: Applying decomposition
May 31, 2018 3:06:08 PM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 495 ms
May 31, 2018 3:06:08 PM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 279 ms
May 31, 2018 3:06:09 PM fr.lip6.move.gal.instantiate.CompositeBuilder decomposeWithOrder
INFO: Decomposing Gal with order
May 31, 2018 3:06:09 PM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 254 ms
May 31, 2018 3:06:09 PM fr.lip6.move.gal.instantiate.CompositeBuilder rewriteArraysToAllowPartition
INFO: Rewriting arrays to variables to allow decomposition.
May 31, 2018 3:06:09 PM fr.lip6.move.gal.instantiate.Instantiator fuseIsomorphicEffects
INFO: Removed a total of 1875 redundant transitions.
May 31, 2018 3:06:10 PM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/LTLCardinality.pnml.gal : 37 ms
May 31, 2018 3:06:10 PM fr.lip6.move.serialization.SerializationUtil serializePropertiesForITSLTLTools
INFO: Time to serialize properties into /home/mcc/execution/LTLCardinality.ltl : 1 ms
May 31, 2018 3:06:10 PM fr.lip6.move.gal.semantics.CompositeNextBuilder getNextForLabel
INFO: Semantic construction discarded 3 identical transitions.
May 31, 2018 3:06:10 PM fr.lip6.move.gal.semantics.CompositeNextBuilder getNextForLabel
INFO: Semantic construction discarded 3 identical transitions.
May 31, 2018 3:06:10 PM fr.lip6.move.gal.semantics.CompositeNextBuilder getNextForLabel
INFO: Semantic construction discarded 3 identical transitions.
May 31, 2018 3:06:10 PM fr.lip6.move.gal.semantics.CompositeNextBuilder getNextForLabel
INFO: Semantic construction discarded 3 identical transitions.
May 31, 2018 3:06:10 PM fr.lip6.move.gal.semantics.CompositeNextBuilder getNextForLabel
INFO: Semantic construction discarded 4 identical transitions.
May 31, 2018 3:06:10 PM fr.lip6.move.gal.semantics.DeterministicNextBuilder getDeterministicNext
INFO: Input system was already deterministic with 1538 transitions.
May 31, 2018 3:06:10 PM fr.lip6.move.gal.gal2pins.Gal2PinsTransformerNext transform
INFO: Too many transitions (1538) to apply POR reductions. Disabling POR matrices.
May 31, 2018 3:06:10 PM fr.lip6.move.gal.gal2pins.Gal2PinsTransformerNext transform
INFO: Built C files in 688ms conformant to PINS in folder :/home/mcc/execution

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="ASLink-PT-04a"
export BK_EXAMINATION="LTLCardinality"
export BK_TOOL="itstoolsl"
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

tar xzf /home/mcc/BenchKit/INPUTS/ASLink-PT-04a.tgz
mv ASLink-PT-04a execution
cd execution
pwd
ls -lh

# this is for BenchKit: explicit launching of the test
echo "====================================================================="
echo " Generated by BenchKit 2-3637"
echo " Executing tool itstoolsl"
echo " Input is ASLink-PT-04a, examination is LTLCardinality"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r273-smll-152749149500059"
echo "====================================================================="
echo
echo "--------------------"
echo "content from stdout:"
echo
echo "=== Data for post analysis generated by BenchKit (invocation template)"
echo
if [ "LTLCardinality" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "LTLCardinality" != "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 "LTLCardinality.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property LTLCardinality.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "LTLCardinality.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 '' LTLCardinality.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
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 ;