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 192K
-rw-r--r-- 1 mcc users 4.0K May 15 18:54 CTLCardinality.txt
-rw-r--r-- 1 mcc users 23K May 15 18:54 CTLCardinality.xml
-rw-r--r-- 1 mcc users 2.2K May 15 18:54 CTLFireability.txt
-rw-r--r-- 1 mcc users 14K 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 6.0K May 15 18:50 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 2.2K May 26 09:27 LTLCardinality.txt
-rw-r--r-- 1 mcc users 9.1K May 26 09:27 LTLCardinality.xml
-rw-r--r-- 1 mcc users 1.8K May 26 09:27 LTLFireability.txt
-rw-r--r-- 1 mcc users 9.1K May 26 09:27 LTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K May 15 18:54 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 20K May 15 18:54 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 106 May 15 18:54 ReachabilityDeadlock.txt
-rw-r--r-- 1 mcc users 344 May 15 18:54 ReachabilityDeadlock.xml
-rw-r--r-- 1 mcc users 2.9K May 15 18:54 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 19K 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 3.7K 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 3 May 15 18:50 instance
-rw-r--r-- 1 mcc users 6 May 15 18:50 iscolored
-rwxr-xr-x 1 mcc users 24K May 15 18:50 model.pnml
=====================================================================
Generated by BenchKit 2-3637
Executing tool itstoolsl
Input is TCPcondis-PT-15, examination is LTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r213-smll-152732264800673
=====================================================================

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

=== Now, execution of the tool begins

BK_START 1527912675088

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(G(X(G("(xCLOSING>=2)"))))))
Formula 0 simplified : !GXG"(xCLOSING>=2)"
Presburger conditions satisfied. Using coverability to approximate state space in K-Induction.
// Phase 1: matrix 32 rows 30 cols
invariant :SYNACK + -1'SYNRCVD + xSYNACK + -1'xSYNRCVD = 0
invariant :CLOSED + CLOSEWAIT + CLOSING + ESTAB + FINWAIT1 + FINWAIT2 + LASTACK + LISTEN + SYNRCVD + SYNSENT + TIMEWAIT = 15
invariant :-1'CLOSEWAIT + -1'CLOSING + FINACK + FINWAIT2 + -1'LASTACK + -1'xCLOSEWAIT + -1'xCLOSING + xFINACK + xFINWAIT2 + -1'xLASTACK = 0
invariant :SYNRCVD + xSYN + -1'xSYNACK + -1'xSYNSENT = 0
invariant :-1'CLOSEWAIT + -1'CLOSING + -1'ESTAB + -1'FINWAIT1 + -1'LASTACK + xESTAB + xFINACK + xFINWAIT1 + xFINWAIT2 + -1'xSYNACK + xSYNRCVD = 0
invariant :SYN + -1'SYNRCVD + -1'SYNSENT + xSYNACK = 0
invariant :-1'CLOSING + FIN + -1'FINWAIT1 + -1'LASTACK + xFINACK = 0
invariant :CLOSEWAIT + CLOSING + ESTAB + FINWAIT1 + LASTACK + xCLOSED + xCLOSEWAIT + xCLOSING + -1'xFINACK + xLASTACK + xLISTEN + xSYNACK + xSYNSENT + xTIMEWAIT = 15
invariant :CLOSEWAIT + CLOSING + -1'FINWAIT2 + LASTACK + xCLOSEWAIT + xFIN + -1'xFINACK + -1'xFINWAIT1 + -1'xFINWAIT2 = 0
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 868 ms.
Running link step : CommandLine [args=[gcc, -shared, -o, gal.so, model.o], workingDir=/home/mcc/execution]
Link finished in 38 ms.
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=1, --when, --ltl, []([](X([]((LTLAP0==true))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 1645 ms.
FORMULA TCPcondis-PT-15-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, -p, --pins-guards, --when, --ltl, <>([](((LTLAP1==true))U((LTLAP2==true)))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 3520 ms.
FORMULA TCPcondis-PT-15-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, <>(<>((LTLAP3==true))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 21 ms.
FORMULA TCPcondis-PT-15-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((LTLAP4==true))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 13 ms.
FORMULA TCPcondis-PT-15-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, []((LTLAP5==true)), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 18 ms.
FORMULA TCPcondis-PT-15-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((LTLAP6==true)), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 12 ms.
FORMULA TCPcondis-PT-15-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((LTLAP7==true)), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 1387 ms.
FORMULA TCPcondis-PT-15-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, -p, --pins-guards, --when, --ltl, <>(((LTLAP8==true))U(<>((LTLAP9==true)))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 20 ms.
FORMULA TCPcondis-PT-15-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, --when, --ltl, X([](X(<>((LTLAP8==true))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 1654 ms.
FORMULA TCPcondis-PT-15-LTLCardinality-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, ((LTLAP10==true))U(X(<>((LTLAP11==true)))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 13 ms.
FORMULA TCPcondis-PT-15-LTLCardinality-09 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([]([]([]((LTLAP12==true))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 1132 ms.
FORMULA TCPcondis-PT-15-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, (LTLAP8==true), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 21 ms.
FORMULA TCPcondis-PT-15-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, [](<>((LTLAP13==true))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 61218 ms.
FORMULA TCPcondis-PT-15-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, []((LTLAP14==true)), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 34 ms.
FORMULA TCPcondis-PT-15-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, --when, --ltl, [](X(<>(<>((LTLAP15==true))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 575 ms.
FORMULA TCPcondis-PT-15-LTLCardinality-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, (LTLAP16==true), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 20 ms.
FORMULA TCPcondis-PT-15-LTLCardinality-15 TRUE TECHNIQUES PARTIAL_ORDER EXPLICIT LTSMIN SAT_SMT
ITS tools runner thread asked to quit. Dying gracefully.

BK_STOP 1527912754802

--------------------
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
Jun 02, 2018 4:11:17 AM 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]
Jun 02, 2018 4:11:17 AM fr.lip6.move.gal.application.MccTranslator transformPNML
INFO: Parsing pnml file : /home/mcc/execution/model.pnml
Jun 02, 2018 4:11:17 AM fr.lip6.move.gal.nupn.PTNetHandler startElement
WARNING: Skipping unknown tool specific annotation : Tina
Jun 02, 2018 4:11:17 AM fr.lip6.move.gal.nupn.PTNetHandler startElement
WARNING: Unknown XML tag in source file: size
Jun 02, 2018 4:11:17 AM fr.lip6.move.gal.nupn.PTNetHandler startElement
WARNING: Unknown XML tag in source file: color
Jun 02, 2018 4:11:17 AM fr.lip6.move.gal.nupn.PTNetReader loadFromXML
INFO: Load time of PNML (sax parser for PT used): 68 ms
Jun 02, 2018 4:11:17 AM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 30 places.
Jun 02, 2018 4:11:18 AM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 32 transitions.
Jun 02, 2018 4:11:18 AM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/model.pnml.img.gal : 12 ms
Jun 02, 2018 4:11:18 AM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 67 ms
Jun 02, 2018 4:11:18 AM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/LTLCardinality.pnml.gal : 3 ms
Jun 02, 2018 4:11:18 AM fr.lip6.move.serialization.SerializationUtil serializePropertiesForITSLTLTools
INFO: Time to serialize properties into /home/mcc/execution/LTLCardinality.ltl : 7 ms
Jun 02, 2018 4:11:18 AM fr.lip6.move.gal.semantics.DeterministicNextBuilder getDeterministicNext
INFO: Input system was already deterministic with 32 transitions.
Jun 02, 2018 4:11:18 AM fr.lip6.move.gal.gal2smt.bmc.KInductionSolver computeAndDeclareInvariants
INFO: Computed 9 place invariants in 17 ms
Jun 02, 2018 4:11:18 AM fr.lip6.move.gal.gal2smt.bmc.KInductionSolver init
INFO: Proved 30 variables to be positive in 114 ms
Jun 02, 2018 4:11:18 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeAblingMatrix
INFO: Computing symmetric may disable matrix : 32 transitions.
Jun 02, 2018 4:11:18 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of disable matrix completed :0/32 took 0 ms. Total solver calls (SAT/UNSAT): 0(0/0)
Jun 02, 2018 4:11:18 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Complete disable matrix. took 2 ms. Total solver calls (SAT/UNSAT): 0(0/0)
Jun 02, 2018 4:11:18 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeAblingMatrix
INFO: Computing symmetric may enable matrix : 32 transitions.
Jun 02, 2018 4:11:18 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Complete enable matrix. took 1 ms. Total solver calls (SAT/UNSAT): 0(0/0)
Jun 02, 2018 4:11:19 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeCoEnablingMatrix
INFO: Computing symmetric co enabling matrix : 32 transitions.
Jun 02, 2018 4:11:20 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Finished co-enabling matrix. took 1102 ms. Total solver calls (SAT/UNSAT): 343(343/0)
Jun 02, 2018 4:11:20 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeDoNotAccord
INFO: Computing Do-Not-Accords matrix : 32 transitions.
Jun 02, 2018 4:11:21 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Completed DNA matrix. took 684 ms. Total solver calls (SAT/UNSAT): 114(0/114)
Jun 02, 2018 4:11:21 AM fr.lip6.move.gal.gal2pins.Gal2PinsTransformerNext transform
INFO: Built C files in 2808ms 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="TCPcondis-PT-15"
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/TCPcondis-PT-15.tgz
mv TCPcondis-PT-15 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 TCPcondis-PT-15, 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 r213-smll-152732264800673"
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 ;