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 188K
-rw-r--r-- 1 mcc users 3.3K May 30 22:42 CTLCardinality.txt
-rw-r--r-- 1 mcc users 18K May 30 22:42 CTLCardinality.xml
-rw-r--r-- 1 mcc users 2.2K May 29 16:49 CTLFireability.txt
-rw-r--r-- 1 mcc users 14K May 29 16:49 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K May 24 11:17 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 5.2K May 24 11:17 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 2.5K May 28 10:59 LTLCardinality.txt
-rw-r--r-- 1 mcc users 12K May 28 10:59 LTLCardinality.xml
-rw-r--r-- 1 mcc users 1.8K May 28 09:06 LTLFireability.txt
-rw-r--r-- 1 mcc users 8.1K May 28 09:06 LTLFireability.xml
-rw-r--r-- 1 mcc users 1 May 24 11:17 NewModel
-rw-r--r-- 1 mcc users 3.8K May 28 07:30 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 21K May 28 07:30 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 111 May 26 06:33 ReachabilityDeadlock.txt
-rw-r--r-- 1 mcc users 349 May 26 06:33 ReachabilityDeadlock.xml
-rw-r--r-- 1 mcc users 2.3K May 27 05:05 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 12K May 27 05:05 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K May 28 07:35 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K May 28 07:35 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 24 11:17 equiv_col
-rw-r--r-- 1 mcc users 7 May 24 11:17 instance
-rw-r--r-- 1 mcc users 6 May 24 11:17 iscolored
-rw-r--r-- 1 mcc users 24K May 24 11:17 model.pnml
=====================================================================
Generated by BenchKit 2-3637
Executing tool itstools
Input is RefineWMG-PT-010010, examination is LTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r284-csrt-152749175400680
=====================================================================

--------------------
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 RefineWMG-PT-010-010-LTLCardinality-00
FORMULA_NAME RefineWMG-PT-010-010-LTLCardinality-01
FORMULA_NAME RefineWMG-PT-010-010-LTLCardinality-02
FORMULA_NAME RefineWMG-PT-010-010-LTLCardinality-03
FORMULA_NAME RefineWMG-PT-010-010-LTLCardinality-04
FORMULA_NAME RefineWMG-PT-010-010-LTLCardinality-05
FORMULA_NAME RefineWMG-PT-010-010-LTLCardinality-06
FORMULA_NAME RefineWMG-PT-010-010-LTLCardinality-07
FORMULA_NAME RefineWMG-PT-010-010-LTLCardinality-08
FORMULA_NAME RefineWMG-PT-010-010-LTLCardinality-09
FORMULA_NAME RefineWMG-PT-010-010-LTLCardinality-10
FORMULA_NAME RefineWMG-PT-010-010-LTLCardinality-11
FORMULA_NAME RefineWMG-PT-010-010-LTLCardinality-12
FORMULA_NAME RefineWMG-PT-010-010-LTLCardinality-13
FORMULA_NAME RefineWMG-PT-010-010-LTLCardinality-14
FORMULA_NAME RefineWMG-PT-010-010-LTLCardinality-15

=== Now, execution of the tool begins

BK_START 1527972401705

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_1.0.0.201805151631/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_1.0.0.201805151631/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 : !(((X(G("(p13>=2)")))U(G(F("(p7>=2)")))))
Formula 0 simplified : !(XG"(p13>=2)" U GF"(p7>=2)")
Presburger conditions satisfied. Using coverability to approximate state space in K-Induction.
// Phase 1: matrix 43 rows 54 cols
invariant :p12 + p13 = 10
invariant :p2 + p3 = 10
invariant :p39 + p40 = 10
invariant :p19 + p20 = 10
invariant :p44 + p45 = 10
invariant :p29 + p30 = 10
invariant :p22 + p23 = 10
invariant :p37 + p38 = 10
invariant :p42 + p43 = 10
invariant :psecond + pterce = 5
invariant :p14 + p15 = 10
invariant :p24 + p25 = 10
invariant :p7 + p8 = 10
invariant :p + pprime + p1 + p6 + p11 + p16 + p21 + p26 + p31 + p36 = 7
invariant :p27 + p28 = 10
invariant :p4 + p5 = 10
invariant :p17 + p18 = 10
invariant :p32 + p33 = 10
invariant :p34 + p35 = 10
invariant :p47 + p48 = 10
invariant :p49 + p50 = 10
invariant :p9 + p10 = 10
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 1178 ms.
Running link step : CommandLine [args=[gcc, -shared, -o, gal.so, model.o], workingDir=/home/mcc/execution]
Link finished in 111 ms.
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=1, --when, --ltl, (X([]((LTLAP0==true))))U([](<>((LTLAP1==true)))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 47 ms.
FORMULA RefineWMG-PT-010-010-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, (((LTLAP2==true))U((LTLAP3==true)))U(((LTLAP4==true))U((LTLAP5==true))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 28 ms.
FORMULA RefineWMG-PT-010-010-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, (LTLAP6==true), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 32 ms.
FORMULA RefineWMG-PT-010-010-LTLCardinality-02 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 19 ms.
FORMULA RefineWMG-PT-010-010-LTLCardinality-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, <>((LTLAP8==true)), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 19 ms.
FORMULA RefineWMG-PT-010-010-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, -p, --pins-guards, --when, --ltl, []((<>((LTLAP9==true)))U(<>((LTLAP10==true)))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 42 ms.
FORMULA RefineWMG-PT-010-010-LTLCardinality-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, <>((LTLAP11==true)), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 27 ms.
FORMULA RefineWMG-PT-010-010-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, []([](((LTLAP12==true))U((LTLAP13==true)))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 177 ms.
FORMULA RefineWMG-PT-010-010-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, (LTLAP14==true), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 38 ms.
FORMULA RefineWMG-PT-010-010-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, <>((LTLAP15==true)), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 15 ms.
FORMULA RefineWMG-PT-010-010-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, --when, --ltl, X((LTLAP16==true)), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 29 ms.
FORMULA RefineWMG-PT-010-010-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, (((LTLAP17==true))U((LTLAP18==true)))U(((LTLAP19==true))U((LTLAP20==true))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 22 ms.
FORMULA RefineWMG-PT-010-010-LTLCardinality-11 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(<>(((LTLAP14==true))U((LTLAP21==true)))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 21 ms.
FORMULA RefineWMG-PT-010-010-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, --when, --ltl, <>(X([](X((LTLAP22==true))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 34 ms.
FORMULA RefineWMG-PT-010-010-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([](X((LTLAP23==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, --when, --ltl, [](X([](X((LTLAP23==true))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=1, --when, --ltl, []([](X(<>((LTLAP24==true))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 40981 ms.
FORMULA RefineWMG-PT-010-010-LTLCardinality-15 FALSE TECHNIQUES PARTIAL_ORDER EXPLICIT LTSMIN SAT_SMT
Retrying LTSmin with larger timeout 1800 s
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=1, --when, --ltl, [](X([](X((LTLAP23==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, --when, --ltl, [](X([](X((LTLAP23==true))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
terminate called after throwing an instance of 'std::bad_alloc'
what(): std::bad_alloc

BK_STOP 1527975881766

--------------------
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/ -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/ -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 8:46:45 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/, -smt]
Jun 02, 2018 8:46:45 PM fr.lip6.move.gal.application.MccTranslator transformPNML
INFO: Parsing pnml file : /home/mcc/execution/model.pnml
Jun 02, 2018 8:46:45 PM fr.lip6.move.gal.nupn.PTNetReader loadFromXML
INFO: Load time of PNML (sax parser for PT used): 66 ms
Jun 02, 2018 8:46:45 PM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 54 places.
Jun 02, 2018 8:46:45 PM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 43 transitions.
Jun 02, 2018 8:46:45 PM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/model.pnml.img.gal : 11 ms
Jun 02, 2018 8:46:45 PM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 48 ms
Jun 02, 2018 8:46:45 PM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/LTLCardinality.pnml.gal : 4 ms
Jun 02, 2018 8:46:45 PM fr.lip6.move.serialization.SerializationUtil serializePropertiesForITSLTLTools
INFO: Time to serialize properties into /home/mcc/execution/LTLCardinality.ltl : 1 ms
Jun 02, 2018 8:46:46 PM fr.lip6.move.gal.semantics.DeterministicNextBuilder getDeterministicNext
INFO: Input system was already deterministic with 43 transitions.
Jun 02, 2018 8:46:46 PM fr.lip6.move.gal.gal2smt.bmc.KInductionSolver computeAndDeclareInvariants
INFO: Computed 22 place invariants in 14 ms
Jun 02, 2018 8:46:46 PM fr.lip6.move.gal.gal2smt.bmc.KInductionSolver init
INFO: Proved 54 variables to be positive in 96 ms
Jun 02, 2018 8:46:46 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeAblingMatrix
INFO: Computing symmetric may disable matrix : 43 transitions.
Jun 02, 2018 8:46:46 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of disable matrix completed :0/43 took 0 ms. Total solver calls (SAT/UNSAT): 0(0/0)
Jun 02, 2018 8:46:46 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Complete disable matrix. took 1 ms. Total solver calls (SAT/UNSAT): 0(0/0)
Jun 02, 2018 8:46:46 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeAblingMatrix
INFO: Computing symmetric may enable matrix : 43 transitions.
Jun 02, 2018 8:46:46 PM 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 8:46:47 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeCoEnablingMatrix
INFO: Computing symmetric co enabling matrix : 43 transitions.
Jun 02, 2018 8:46:48 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Finished co-enabling matrix. took 1103 ms. Total solver calls (SAT/UNSAT): 86(86/0)
Jun 02, 2018 8:46:48 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeDoNotAccord
INFO: Computing Do-Not-Accords matrix : 43 transitions.
Jun 02, 2018 8:46:48 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Completed DNA matrix. took 511 ms. Total solver calls (SAT/UNSAT): 41(0/41)
Jun 02, 2018 8:46:48 PM fr.lip6.move.gal.gal2pins.Gal2PinsTransformerNext transform
INFO: Built C files in 2859ms conformant to PINS in folder :/home/mcc/execution
ITS-tools command line returned an error code 134

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="RefineWMG-PT-010010"
export BK_EXAMINATION="LTLCardinality"
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

tar xzf /home/mcc/BenchKit/INPUTS/RefineWMG-PT-010010.tgz
mv RefineWMG-PT-010010 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 itstools"
echo " Input is RefineWMG-PT-010010, 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 r284-csrt-152749175400680"
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 ;