Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2019-input.r096-smll-155246587400268.qcow2', fmt=qcow2 size=4294967296 backing_file='/data/fkordon/mcc2019-input.qcow2' encryption=off cluster_size=65536 lazy_refcounts=off
Waiting for the VM to be ready (probing ssh)
....................
=====================================================================
Generated by BenchKit 2-3957
Executing tool itstools
Input is MAPK-PT-00040, examination is LTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r096-smll-155246587400268
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 184K
-rw-r--r-- 1 mcc users 3.5K Feb 11 22:47 CTLCardinality.txt
-rw-r--r-- 1 mcc users 19K Feb 11 22:47 CTLCardinality.xml
-rw-r--r-- 1 mcc users 2.0K Feb 7 23:38 CTLFireability.txt
-rw-r--r-- 1 mcc users 12K Feb 7 23:38 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K Mar 10 17:31 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.0K Mar 10 17:31 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 100 Feb 24 15:05 GlobalProperties.txt
-rw-r--r-- 1 mcc users 338 Feb 24 15:05 GlobalProperties.xml
-rw-r--r-- 1 mcc users 2.1K Feb 5 00:12 LTLCardinality.txt
-rw-r--r-- 1 mcc users 8.2K Feb 5 00:12 LTLCardinality.xml
-rw-r--r-- 1 mcc users 1.8K Feb 4 22:36 LTLFireability.txt
-rw-r--r-- 1 mcc users 11K Feb 4 22:36 LTLFireability.xml
-rw-r--r-- 1 mcc users 3.3K Feb 4 06:24 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 15K Feb 4 06:24 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 2.8K Jan 31 23:57 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 19K Jan 31 23:57 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Feb 4 22:21 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K Feb 4 22:21 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Jan 29 09:34 equiv_col
-rw-r--r-- 1 mcc users 6 Jan 29 09:34 instance
-rw-r--r-- 1 mcc users 6 Jan 29 09:34 iscolored
-rw-r--r-- 1 mcc users 0 Jan 29 09:34 model-fix.log
-rw-r--r-- 1 mcc users 25K 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 MAPK-PT-00040-LTLFireability-00
FORMULA_NAME MAPK-PT-00040-LTLFireability-01
FORMULA_NAME MAPK-PT-00040-LTLFireability-02
FORMULA_NAME MAPK-PT-00040-LTLFireability-03
FORMULA_NAME MAPK-PT-00040-LTLFireability-04
FORMULA_NAME MAPK-PT-00040-LTLFireability-05
FORMULA_NAME MAPK-PT-00040-LTLFireability-06
FORMULA_NAME MAPK-PT-00040-LTLFireability-07
FORMULA_NAME MAPK-PT-00040-LTLFireability-08
FORMULA_NAME MAPK-PT-00040-LTLFireability-09
FORMULA_NAME MAPK-PT-00040-LTLFireability-10
FORMULA_NAME MAPK-PT-00040-LTLFireability-11
FORMULA_NAME MAPK-PT-00040-LTLFireability-12
FORMULA_NAME MAPK-PT-00040-LTLFireability-13
FORMULA_NAME MAPK-PT-00040-LTLFireability-14
FORMULA_NAME MAPK-PT-00040-LTLFireability-15

=== Now, execution of the tool begins

BK_START 1552818630951

Working with output stream class java.io.PrintStream
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_1.0.0.201903111103/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_1.0.0.201903111103/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 : !((((F("((ERKP>=1)&&(Phase3>=1))"))U(F("(ERK_MEKPP>=1)")))U(X(F(F("((Phase2>=1)&&(MEKP>=1))"))))))
Formula 0 simplified : !((F"((ERKP>=1)&&(Phase3>=1))" U F"(ERK_MEKPP>=1)") U XF"((Phase2>=1)&&(MEKP>=1))")
Presburger conditions satisfied. Using coverability to approximate state space in K-Induction.
// Phase 1: matrix 30 rows 22 cols
invariant :-1'MEK + ERKP + -1'MEKPP + -1'Phase3 + -1'MEKP + ERKPP + -1'MEKP_Phase2 + -1'MEKPP_Phase2 + ERK + RafP + RafP_Phase1 + -1'RasGTP + Raf = 10
invariant :MEKP_RafP + RafP + MEK_RafP + RafP_Phase1 + -1'RasGTP + Raf = 30
invariant :Phase1 + RafP_Phase1 = 30
invariant :ERKPP_Phase3 + ERKP_Phase3 + Phase3 = 30
invariant :Phase2 + MEKP_Phase2 + MEKPP_Phase2 = 20
invariant :ERK_MEKPP + ERKP_MEKPP + MEK + MEKPP + MEKP + MEKP_Phase2 + MEKPP_Phase2 + -1'RafP + -1'RafP_Phase1 + RasGTP + -1'Raf = -10
invariant :Raf_RasGTP + RasGTP = 10
Running compilation step : CommandLine [args=[gcc, -c, -I/home/mcc/BenchKit//lts_install_dir//include, -I., -std=c99, -fPIC, -O2, model.c], workingDir=/home/mcc/execution]
Compilation finished in 758 ms.
Running link step : CommandLine [args=[gcc, -shared, -o, gal.so, model.o], workingDir=/home/mcc/execution]
Link finished in 49 ms.
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=8, --when, --ltl, ((<>((LTLAP0==true)))U(<>((LTLAP1==true))))U(X(<>(<>((LTLAP2==true))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 104 ms.
FORMULA MAPK-PT-00040-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=8, --when, --ltl, X((((LTLAP3==true))U((LTLAP4==true)))U([](<>((LTLAP5==true))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 258 ms.
FORMULA MAPK-PT-00040-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=8, --when, --ltl, [](X(((LTLAP6==true))U((LTLAP5==true)))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 68 ms.
FORMULA MAPK-PT-00040-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=8, --when, --ltl, X((LTLAP7==true)), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 244 ms.
FORMULA MAPK-PT-00040-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=8, -p, --pins-guards, --when, --ltl, (([]((LTLAP8==true)))U([]((LTLAP9==true))))U([](((LTLAP0==true))U((LTLAP10==true)))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 217 ms.
FORMULA MAPK-PT-00040-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=8, --when, --ltl, X((LTLAP11==true)), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 73 ms.
FORMULA MAPK-PT-00040-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=8, --when, --ltl, ((LTLAP6==true))U([]([](X((LTLAP6==true))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 68 ms.
FORMULA MAPK-PT-00040-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=8, --when, --ltl, []((X(<>((LTLAP11==true))))U([]([]((LTLAP11==true))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 273 ms.
FORMULA MAPK-PT-00040-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=8, --when, --ltl, (<>((LTLAP1==true)))U(X(X(<>((LTLAP10==true))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 64 ms.
FORMULA MAPK-PT-00040-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=8, --when, --ltl, X(<>((LTLAP12==true))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 120 ms.
FORMULA MAPK-PT-00040-LTLFireability-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=8, -p, --pins-guards, --when, --ltl, [](<>((LTLAP10==true))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 146 ms.
FORMULA MAPK-PT-00040-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=8, --when, --ltl, ([]((LTLAP13==true)))U(<>(<>(X((LTLAP3==true))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 130 ms.
FORMULA MAPK-PT-00040-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=8, --when, --ltl, X(X([](X(<>((LTLAP14==true)))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 67 ms.
FORMULA MAPK-PT-00040-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=8, -p, --pins-guards, --when, --ltl, (<>((LTLAP10==true)))U((LTLAP1==true)), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 315 ms.
FORMULA MAPK-PT-00040-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=8, -p, --pins-guards, --when, --ltl, <>(<>(((LTLAP1==true))U([]((LTLAP15==true))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 319 ms.
FORMULA MAPK-PT-00040-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=8, -p, --pins-guards, --when, --ltl, <>([](((LTLAP16==true))U([]((LTLAP3==true))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 230 ms.
FORMULA MAPK-PT-00040-LTLFireability-15 FALSE TECHNIQUES PARTIAL_ORDER EXPLICIT LTSMIN SAT_SMT
ITS tools runner thread asked to quit. Dying gracefully.

BK_STOP 1552818641670

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

+ export BINDIR=/home/mcc/BenchKit/
+ BINDIR=/home/mcc/BenchKit/
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ LTLFireability = StateSpace ]]
+ /home/mcc/BenchKit//runeclipse.sh /home/mcc/execution LTLFireability -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 -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/ -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 17, 2019 10:30:33 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/, -smt]
Mar 17, 2019 10:30:33 AM fr.lip6.move.gal.application.MccTranslator transformPNML
INFO: Parsing pnml file : /home/mcc/execution/model.pnml
Mar 17, 2019 10:30:34 AM fr.lip6.move.gal.nupn.PTNetReader loadFromXML
INFO: Load time of PNML (sax parser for PT used): 62 ms
Mar 17, 2019 10:30:34 AM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 22 places.
Mar 17, 2019 10:30:34 AM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 30 transitions.
Mar 17, 2019 10:30:34 AM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/model.pnml.img.gal : 13 ms
Mar 17, 2019 10:30:34 AM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 49 ms
Mar 17, 2019 10:30:34 AM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/LTLFireability.pnml.gal : 5 ms
Mar 17, 2019 10:30:34 AM fr.lip6.move.serialization.SerializationUtil serializePropertiesForITSLTLTools
INFO: Time to serialize properties into /home/mcc/execution/LTLFireability.ltl : 3 ms
Mar 17, 2019 10:30:34 AM fr.lip6.move.gal.semantics.DeterministicNextBuilder getDeterministicNext
INFO: Input system was already deterministic with 30 transitions.
Mar 17, 2019 10:30:34 AM fr.lip6.move.gal.gal2smt.bmc.KInductionSolver computeAndDeclareInvariants
INFO: Computed 7 place invariants in 12 ms
Mar 17, 2019 10:30:34 AM fr.lip6.move.gal.gal2smt.bmc.KInductionSolver init
INFO: Proved 22 variables to be positive in 98 ms
Mar 17, 2019 10:30:34 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeAblingMatrix
INFO: Computing symmetric may disable matrix : 30 transitions.
Mar 17, 2019 10:30:34 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of disable matrix completed :0/30 took 0 ms. Total solver calls (SAT/UNSAT): 0(0/0)
Mar 17, 2019 10:30:34 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)
Mar 17, 2019 10:30:34 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeAblingMatrix
INFO: Computing symmetric may enable matrix : 30 transitions.
Mar 17, 2019 10:30:34 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)
Mar 17, 2019 10:30:35 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeCoEnablingMatrix
INFO: Computing symmetric co enabling matrix : 30 transitions.
Mar 17, 2019 10:30:36 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Finished co-enabling matrix. took 635 ms. Total solver calls (SAT/UNSAT): 229(229/0)
Mar 17, 2019 10:30:36 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeDoNotAccord
INFO: Computing Do-Not-Accords matrix : 30 transitions.
Mar 17, 2019 10:30:36 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Completed DNA matrix. took 465 ms. Total solver calls (SAT/UNSAT): 112(0/112)
Mar 17, 2019 10:30:36 AM fr.lip6.move.gal.gal2pins.Gal2PinsTransformerNext transform
INFO: Built C files in 2261ms 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="MAPK-PT-00040"
export BK_EXAMINATION="LTLFireability"
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

# this is for BenchKit: explicit launching of the test
echo "====================================================================="
echo " Generated by BenchKit 2-3957"
echo " Executing tool itstools"
echo " Input is MAPK-PT-00040, 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 r096-smll-155246587400268"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/MAPK-PT-00040.tgz
mv MAPK-PT-00040 execution
cd execution
if [ "LTLFireability" = "GlobalProperties" ] ; then
rm -f GenericPropertiesVerdict.xml
fi
if [ "LTLFireability" = "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 [ "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 ;