fond
Model Checking Contest 2018
8th edition, Bratislava, Slovakia, June 26, 2018
Execution of r237-blw3-152732477700126
Last Updated
June 26, 2018

About the Execution of ITS-Tools.L for Echo-PT-d02r15

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
15755.720 655941.00 1315836.00 384.90 FFFFFFFFFFFFFFFF 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 968K
-rw-r--r-- 1 mcc users 4.1K May 15 18:54 CTLCardinality.txt
-rw-r--r-- 1 mcc users 24K May 15 18:54 CTLCardinality.xml
-rw-r--r-- 1 mcc users 2.1K May 15 18:54 CTLFireability.txt
-rw-r--r-- 1 mcc users 13K May 15 18:54 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K May 15 18:50 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 5.6K May 15 18:50 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 2.4K May 26 09:26 LTLCardinality.txt
-rw-r--r-- 1 mcc users 12K May 26 09:26 LTLCardinality.xml
-rw-r--r-- 1 mcc users 1.8K May 26 09:26 LTLFireability.txt
-rw-r--r-- 1 mcc users 9.0K May 26 09:26 LTLFireability.xml
-rw-r--r-- 1 mcc users 3.3K May 15 18:54 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 16K May 15 18:54 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 105 May 15 18:54 ReachabilityDeadlock.txt
-rw-r--r-- 1 mcc users 343 May 15 18:54 ReachabilityDeadlock.xml
-rw-r--r-- 1 mcc users 2.6K May 15 18:54 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 16K May 15 18:54 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K May 15 18:54 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K May 15 18:54 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 15 18:50 equiv_col
-rw-r--r-- 1 mcc users 7 May 15 18:50 instance
-rw-r--r-- 1 mcc users 6 May 15 18:50 iscolored
-rw-r--r-- 1 mcc users 804K May 15 18:50 model.pnml
=====================================================================
Generated by BenchKit 2-3637
Executing tool itstoolsl
Input is Echo-PT-d02r15, examination is LTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r237-blw3-152732477700126
=====================================================================


--------------------
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 Echo-PT-d02r15-LTLFireability-00
FORMULA_NAME Echo-PT-d02r15-LTLFireability-01
FORMULA_NAME Echo-PT-d02r15-LTLFireability-02
FORMULA_NAME Echo-PT-d02r15-LTLFireability-03
FORMULA_NAME Echo-PT-d02r15-LTLFireability-04
FORMULA_NAME Echo-PT-d02r15-LTLFireability-05
FORMULA_NAME Echo-PT-d02r15-LTLFireability-06
FORMULA_NAME Echo-PT-d02r15-LTLFireability-07
FORMULA_NAME Echo-PT-d02r15-LTLFireability-08
FORMULA_NAME Echo-PT-d02r15-LTLFireability-09
FORMULA_NAME Echo-PT-d02r15-LTLFireability-10
FORMULA_NAME Echo-PT-d02r15-LTLFireability-11
FORMULA_NAME Echo-PT-d02r15-LTLFireability-12
FORMULA_NAME Echo-PT-d02r15-LTLFireability-13
FORMULA_NAME Echo-PT-d02r15-LTLFireability-14
FORMULA_NAME Echo-PT-d02r15-LTLFireability-15

=== Now, execution of the tool begins

BK_START 1528016187938

Converted graph to binary with : CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.201805241334/bin/convert-linux64, -i, /tmp/graph6272671360374165275.txt, -o, /tmp/graph6272671360374165275.bin, -w, /tmp/graph6272671360374165275.weights], workingDir=null]
Built communities with : CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.201805241334/bin/louvain-linux64, /tmp/graph6272671360374165275.bin, -l, -1, -v, -w, /tmp/graph6272671360374165275.weights, -q, 0, -e, 0.001], workingDir=null]
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/LTLFireability.pnml.gal, -t, CGAL, -LTL, /home/mcc/execution/LTLFireability.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/LTLFireability.pnml.gal -t CGAL -LTL /home/mcc/execution/LTLFireability.ltl -c -stutter-deadlock
Read 16 LTL properties
Checking formula 0 : !((G((X(F("((i3.u19.p2059>=1)&&(i8.u29.p798>=1))")))U(X(G("((((i6.u89.p1183>=1)&&(i6.u89.p342>=1))&&(i6.u89.p344>=1))&&(i6.u89.p345>=1))"))))))
Formula 0 simplified : !G(XF"((i3.u19.p2059>=1)&&(i8.u29.p798>=1))" U XG"((((i6.u89.p1183>=1)&&(i6.u89.p342>=1))&&(i6.u89.p344>=1))&&(i6.u89.p345>=1))")
built 50 ordering constraints for composite.
built 92 ordering constraints for composite.
built 97 ordering constraints for composite.
built 90 ordering constraints for composite.
built 106 ordering constraints for composite.
built 106 ordering constraints for composite.
built 168 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]
built 156 ordering constraints for composite.
built 154 ordering constraints for composite.
built 111 ordering constraints for composite.
built 106 ordering constraints for composite.
built 127 ordering constraints for composite.
built 148 ordering constraints for composite.
built 118 ordering constraints for composite.
Compilation finished in 23029 ms.
Running link step : CommandLine [args=[gcc, -shared, -o, gal.so, model.o], workingDir=/home/mcc/execution]
Link finished in 56 ms.
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=1, --when, --ltl, []((X(<>((LTLAP0==true))))U(X([]((LTLAP1==true))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 1920 ms.
FORMULA Echo-PT-d02r15-LTLFireability-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, -p, --pins-guards, --when, --ltl, (LTLAP2==true), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 88737 ms.
FORMULA Echo-PT-d02r15-LTLFireability-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, --when, --ltl, X((X([]((LTLAP3==true))))U((LTLAP4==true))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 1889 ms.
FORMULA Echo-PT-d02r15-LTLFireability-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(X(((LTLAP5==true))U((LTLAP6==true)))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 1906 ms.
FORMULA Echo-PT-d02r15-LTLFireability-03 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, <>([](<>((LTLAP7==true)))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 87538 ms.
FORMULA Echo-PT-d02r15-LTLFireability-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, -p, --pins-guards, --when, --ltl, (LTLAP8==true), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 87816 ms.
FORMULA Echo-PT-d02r15-LTLFireability-05 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, []((<>([]((LTLAP9==true))))U([]((LTLAP10==true)))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 86007 ms.
FORMULA Echo-PT-d02r15-LTLFireability-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, ((X((LTLAP11==true)))U(X((LTLAP4==true))))U((X((LTLAP12==true)))U(<>((LTLAP13==true)))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 1820 ms.
FORMULA Echo-PT-d02r15-LTLFireability-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, --when, --ltl, (<>(<>(X((LTLAP14==true)))))U(<>(((LTLAP15==true))U((LTLAP16==true)))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 1835 ms.
FORMULA Echo-PT-d02r15-LTLFireability-08 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(X(X([](X((LTLAP17==true)))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 1901 ms.
FORMULA Echo-PT-d02r15-LTLFireability-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, --when, --ltl, X(X(<>([](<>((LTLAP18==true)))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 1829 ms.
FORMULA Echo-PT-d02r15-LTLFireability-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, --when, --ltl, <>(X(<>([](<>((LTLAP19==true)))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 1825 ms.
FORMULA Echo-PT-d02r15-LTLFireability-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, (LTLAP20==true), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 87547 ms.
FORMULA Echo-PT-d02r15-LTLFireability-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, --when, --ltl, []((<>((LTLAP21==true)))U(X((LTLAP22==true)))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 2193 ms.
FORMULA Echo-PT-d02r15-LTLFireability-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, <>((LTLAP23==true)), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 87033 ms.
FORMULA Echo-PT-d02r15-LTLFireability-14 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, (LTLAP24==true), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 85326 ms.
FORMULA Echo-PT-d02r15-LTLFireability-15 FALSE TECHNIQUES PARTIAL_ORDER EXPLICIT LTSMIN SAT_SMT
ITS tools runner thread asked to quit. Dying gracefully.

BK_STOP 1528016843879

--------------------
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 LTLFireability -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 LTLFireability -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
Jun 03, 2018 8:56:29 AM fr.lip6.move.gal.application.Application start
INFO: Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, LTLFireability, -z3path, /home/mcc/BenchKit//z3/bin/z3, -yices2path, /home/mcc/BenchKit//yices/bin/yices, -its, -ltsminpath, /home/mcc/BenchKit//lts_install_dir/, -louvain, -smt]
Jun 03, 2018 8:56:29 AM fr.lip6.move.gal.application.MccTranslator transformPNML
INFO: Parsing pnml file : /home/mcc/execution/model.pnml
Jun 03, 2018 8:56:29 AM fr.lip6.move.gal.nupn.PTNetReader loadFromXML
INFO: Load time of PNML (sax parser for PT used): 197 ms
Jun 03, 2018 8:56:29 AM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 2127 places.
Jun 03, 2018 8:56:29 AM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 1674 transitions.
Jun 03, 2018 8:56:29 AM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/model.pnml.img.gal : 50 ms
Jun 03, 2018 8:56:29 AM fr.lip6.move.gal.application.MccTranslator applyOrder
INFO: Applying decomposition
Jun 03, 2018 8:56:30 AM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 516 ms
Jun 03, 2018 8:56:30 AM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 275 ms
Begin: Sun Jun 3 08:56:31 2018

Computation of communities with the Newman-Girvan Modularity quality function

level 0:
start computation: Sun Jun 3 08:56:31 2018
network size: 2127 nodes, 14724 links, 3348 weight
quality increased from -0.00061606 to 0.618555
end computation: Sun Jun 3 08:56:31 2018
level 1:
start computation: Sun Jun 3 08:56:31 2018
network size: 128 nodes, 1078 links, 3348 weight
quality increased from 0.618555 to 0.790355
end computation: Sun Jun 3 08:56:31 2018
level 2:
start computation: Sun Jun 3 08:56:31 2018
network size: 22 nodes, 122 links, 3348 weight
quality increased from 0.790355 to 0.799597
end computation: Sun Jun 3 08:56:31 2018
level 3:
start computation: Sun Jun 3 08:56:31 2018
network size: 14 nodes, 72 links, 3348 weight
quality increased from 0.799597 to 0.800065
end computation: Sun Jun 3 08:56:31 2018
level 4:
start computation: Sun Jun 3 08:56:31 2018
network size: 13 nodes, 65 links, 3348 weight
quality increased from 0.800065 to 0.800065
end computation: Sun Jun 3 08:56:31 2018
End: Sun Jun 3 08:56:31 2018
Total duration: 0 sec
0.800065
Jun 03, 2018 8:56:31 AM fr.lip6.move.gal.instantiate.CompositeBuilder decomposeWithOrder
INFO: Decomposing Gal with order
Jun 03, 2018 8:56:31 AM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 245 ms
Jun 03, 2018 8:56:31 AM fr.lip6.move.gal.instantiate.CompositeBuilder rewriteArraysToAllowPartition
INFO: Rewriting arrays to variables to allow decomposition.
Jun 03, 2018 8:56:32 AM fr.lip6.move.gal.instantiate.Instantiator fuseIsomorphicEffects
INFO: Removed a total of 1505 redundant transitions.
Jun 03, 2018 8:56:32 AM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/LTLFireability.pnml.gal : 30 ms
Jun 03, 2018 8:56:32 AM fr.lip6.move.serialization.SerializationUtil serializePropertiesForITSLTLTools
INFO: Time to serialize properties into /home/mcc/execution/LTLFireability.ltl : 1 ms
Jun 03, 2018 8:56:32 AM fr.lip6.move.gal.semantics.DeterministicNextBuilder getDeterministicNext
INFO: Input system was already deterministic with 1674 transitions.
Jun 03, 2018 8:56:32 AM fr.lip6.move.gal.gal2pins.Gal2PinsTransformerNext transform
INFO: Too many transitions (1674) to apply POR reductions. Disabling POR matrices.
Jun 03, 2018 8:56:32 AM fr.lip6.move.gal.gal2pins.Gal2PinsTransformerNext transform
INFO: Built C files in 492ms 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="Echo-PT-d02r15"
export BK_EXAMINATION="LTLFireability"
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/Echo-PT-d02r15.tgz
mv Echo-PT-d02r15 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 Echo-PT-d02r15, examination is LTLFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r237-blw3-152732477700126"
echo "====================================================================="
echo
echo "--------------------"
echo "content from stdout:"
echo
echo "=== Data for post analysis generated by BenchKit (invocation template)"
echo
if [ "LTLFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "LTLFireability" != "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 "LTLFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property LTLFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "LTLFireability.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 '' LTLFireability.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 ;