fond
Model Checking Contest 2018
8th edition, Bratislava, Slovakia, June 26, 2018
Execution of r212-smll-152732263000252
Last Updated
June 26, 2018

About the Execution of ITS-Tools for DNAwalker-PT-13ringRLLarge

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
15753.550 28071.00 58812.00 424.20 FFFFFFTFFFFFFFTF 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 308K
-rw-r--r-- 1 mcc users 3.2K May 15 18:54 CTLCardinality.txt
-rw-r--r-- 1 mcc users 18K May 15 18:54 CTLCardinality.xml
-rw-r--r-- 1 mcc users 2.6K May 15 18:54 CTLFireability.txt
-rw-r--r-- 1 mcc users 15K 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 2.6K May 26 09:26 LTLCardinality.txt
-rw-r--r-- 1 mcc users 13K May 26 09:26 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.0K May 26 09:26 LTLFireability.txt
-rw-r--r-- 1 mcc users 8.5K May 26 09:26 LTLFireability.xml
-rw-r--r-- 1 mcc users 3.9K May 15 18:54 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 22K May 15 18:54 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 117 May 15 18:54 ReachabilityDeadlock.txt
-rw-r--r-- 1 mcc users 355 May 15 18:54 ReachabilityDeadlock.xml
-rw-r--r-- 1 mcc users 3.1K 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 1.7K May 15 18:54 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K 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 14 May 15 18:50 instance
-rw-r--r-- 1 mcc users 6 May 15 18:50 iscolored
-rw-r--r-- 1 mcc users 135K May 15 18:50 model.pnml
=====================================================================
Generated by BenchKit 2-3637
Executing tool itstools
Input is DNAwalker-PT-13ringRLLarge, examination is LTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r212-smll-152732263000252
=====================================================================


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

=== Now, execution of the tool begins

BK_START 1527936068588

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/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_1.0.0.201805151631/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((G(F("((A6>=2)&&(A7>=1))")))U(F(G("((A2>=2)&&(A26>=1))"))))))
Formula 0 simplified : !G(GF"((A6>=2)&&(A7>=1))" U FG"((A2>=2)&&(A26>=1))")
Presburger conditions satisfied. Using coverability to approximate state space in K-Induction.
Normalized transition count is 311
// Phase 1: matrix 311 rows 33 cols
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 4777 ms.
Running link step : CommandLine [args=[gcc, -shared, -o, gal.so, model.o], workingDir=/home/mcc/execution]
Link finished in 48 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 77 ms.
FORMULA DNAwalker-PT-13ringRLLarge-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, --when, --ltl, (X([]((LTLAP2==true))))U(<>((LTLAP3==true))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 20 ms.
FORMULA DNAwalker-PT-13ringRLLarge-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([]((LTLAP4==true))))U(((LTLAP5==true))U((LTLAP6==true)))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 20 ms.
FORMULA DNAwalker-PT-13ringRLLarge-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, ((LTLAP7==true))U(X(<>(X((LTLAP8==true))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 18 ms.
FORMULA DNAwalker-PT-13ringRLLarge-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, <>((LTLAP9==true)), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 57 ms.
FORMULA DNAwalker-PT-13ringRLLarge-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, --when, --ltl, [](X(<>([](X((LTLAP10==true)))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 17 ms.
FORMULA DNAwalker-PT-13ringRLLarge-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, (LTLAP11==true), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 55 ms.
FORMULA DNAwalker-PT-13ringRLLarge-LTLFireability-06 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)))U([]((LTLAP13==true))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 18 ms.
FORMULA DNAwalker-PT-13ringRLLarge-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))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 20 ms.
FORMULA DNAwalker-PT-13ringRLLarge-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, -p, --pins-guards, --when, --ltl, []([](<>(((LTLAP16==true))U((LTLAP17==true))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 59 ms.
FORMULA DNAwalker-PT-13ringRLLarge-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, -p, --pins-guards, --when, --ltl, []([]((LTLAP18==true))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 57 ms.
FORMULA DNAwalker-PT-13ringRLLarge-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, -p, --pins-guards, --when, --ltl, <>((LTLAP19==true)), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 57 ms.
FORMULA DNAwalker-PT-13ringRLLarge-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 58 ms.
FORMULA DNAwalker-PT-13ringRLLarge-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, -p, --pins-guards, --when, --ltl, (LTLAP21==true), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 60 ms.
FORMULA DNAwalker-PT-13ringRLLarge-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, (LTLAP22==true), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 55 ms.
FORMULA DNAwalker-PT-13ringRLLarge-LTLFireability-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)))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 57 ms.
FORMULA DNAwalker-PT-13ringRLLarge-LTLFireability-15 FALSE TECHNIQUES PARTIAL_ORDER EXPLICIT LTSMIN SAT_SMT
ITS tools runner thread asked to quit. Dying gracefully.

BK_STOP 1527936096659

--------------------
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/ -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/ -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 10:41:11 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]
Jun 02, 2018 10:41:11 AM fr.lip6.move.gal.application.MccTranslator transformPNML
INFO: Parsing pnml file : /home/mcc/execution/model.pnml
Jun 02, 2018 10:41:11 AM fr.lip6.move.gal.nupn.PTNetReader loadFromXML
INFO: Load time of PNML (sax parser for PT used): 152 ms
Jun 02, 2018 10:41:11 AM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 33 places.
Jun 02, 2018 10:41:11 AM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 312 transitions.
Jun 02, 2018 10:41:11 AM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/model.pnml.img.gal : 32 ms
Jun 02, 2018 10:41:12 AM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 146 ms
Jun 02, 2018 10:41:12 AM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/LTLFireability.pnml.gal : 7 ms
Jun 02, 2018 10:41:12 AM fr.lip6.move.serialization.SerializationUtil serializePropertiesForITSLTLTools
INFO: Time to serialize properties into /home/mcc/execution/LTLFireability.ltl : 1 ms
Jun 02, 2018 10:41:12 AM fr.lip6.move.gal.semantics.DeterministicNextBuilder getDeterministicNext
INFO: Input system was already deterministic with 312 transitions.
Jun 02, 2018 10:41:12 AM fr.lip6.move.gal.gal2smt.bmc.KInductionSolver computeAndDeclareInvariants
INFO: Computed 0 place invariants in 20 ms
Jun 02, 2018 10:41:12 AM fr.lip6.move.gal.gal2smt.bmc.KInductionSolver init
INFO: Proved 33 variables to be positive in 203 ms
Jun 02, 2018 10:41:12 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeAblingMatrix
INFO: Computing symmetric may disable matrix : 312 transitions.
Jun 02, 2018 10:41:12 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of disable matrix completed :0/312 took 0 ms. Total solver calls (SAT/UNSAT): 0(0/0)
Jun 02, 2018 10:41:13 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Complete disable matrix. took 43 ms. Total solver calls (SAT/UNSAT): 0(0/0)
Jun 02, 2018 10:41:13 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeAblingMatrix
INFO: Computing symmetric may enable matrix : 312 transitions.
Jun 02, 2018 10:41:13 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Complete enable matrix. took 13 ms. Total solver calls (SAT/UNSAT): 0(0/0)
Jun 02, 2018 10:41:15 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeCoEnablingMatrix
INFO: Computing symmetric co enabling matrix : 312 transitions.
Jun 02, 2018 10:41:16 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of co-enabling matrix(16/312) took 374 ms. Total solver calls (SAT/UNSAT): 335(335/0)
Jun 02, 2018 10:41:19 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of co-enabling matrix(118/312) took 3386 ms. Total solver calls (SAT/UNSAT): 3682(3682/0)
Jun 02, 2018 10:41:22 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of co-enabling matrix(271/312) took 6400 ms. Total solver calls (SAT/UNSAT): 6545(6545/0)
Jun 02, 2018 10:41:22 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Finished co-enabling matrix. took 6944 ms. Total solver calls (SAT/UNSAT): 6866(6866/0)
Jun 02, 2018 10:41:22 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeDoNotAccord
INFO: Computing Do-Not-Accords matrix : 312 transitions.
Jun 02, 2018 10:41:29 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Completed DNA matrix. took 7308 ms. Total solver calls (SAT/UNSAT): 1822(0/1822)
Jun 02, 2018 10:41:30 AM fr.lip6.move.gal.gal2pins.Gal2PinsTransformerNext transform
INFO: Built C files in 17738ms 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="DNAwalker-PT-13ringRLLarge"
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

tar xzf /home/mcc/BenchKit/INPUTS/DNAwalker-PT-13ringRLLarge.tgz
mv DNAwalker-PT-13ringRLLarge 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 DNAwalker-PT-13ringRLLarge, 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 r212-smll-152732263000252"
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 ;