fond
Model Checking Contest 2019
9th edition, Prague, Czech Republic, April 7, 2019 (TOOLympics)
Execution of r030-smll-155225127000340
Last Updated
Apr 15, 2019

About the Execution of ITS-Tools for ClientsAndServers-PT-N0020P4

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
6912.150 3600000.00 4237644.00 9066.20 [undef] Time out reached

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.r030-smll-155225127000340.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 ClientsAndServers-PT-N0020P4, examination is LTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r030-smll-155225127000340
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 168K
-rw-r--r-- 1 mcc users 3.7K Feb 9 08:37 CTLCardinality.txt
-rw-r--r-- 1 mcc users 21K Feb 9 08:37 CTLCardinality.xml
-rw-r--r-- 1 mcc users 2.5K Feb 5 07:22 CTLFireability.txt
-rw-r--r-- 1 mcc users 15K Feb 5 07:22 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K Mar 10 17:31 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.2K Mar 10 17:31 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 115 Feb 24 15:05 GlobalProperties.txt
-rw-r--r-- 1 mcc users 353 Feb 24 15:05 GlobalProperties.xml
-rw-r--r-- 1 mcc users 2.5K Feb 4 23:09 LTLCardinality.txt
-rw-r--r-- 1 mcc users 12K Feb 4 23:09 LTLCardinality.xml
-rw-r--r-- 1 mcc users 1.9K Feb 4 22:33 LTLFireability.txt
-rw-r--r-- 1 mcc users 8.0K Feb 4 22:33 LTLFireability.xml
-rw-r--r-- 1 mcc users 3.4K Feb 2 01:46 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 16K Feb 2 01:46 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 2.8K Jan 29 15:27 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 16K Jan 29 15:27 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K Feb 4 22:18 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Feb 4 22:18 UpperBounds.xml

-rw-r--r-- 1 mcc users 6 Jan 29 09:34 equiv_col
-rw-r--r-- 1 mcc users 8 Jan 29 09:34 instance
-rw-r--r-- 1 mcc users 6 Jan 29 09:34 iscolored
-rw-r--r-- 1 mcc users 9.2K 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 ClientsAndServers-PT-N0020P4-LTLFireability-00
FORMULA_NAME ClientsAndServers-PT-N0020P4-LTLFireability-01
FORMULA_NAME ClientsAndServers-PT-N0020P4-LTLFireability-02
FORMULA_NAME ClientsAndServers-PT-N0020P4-LTLFireability-03
FORMULA_NAME ClientsAndServers-PT-N0020P4-LTLFireability-04
FORMULA_NAME ClientsAndServers-PT-N0020P4-LTLFireability-05
FORMULA_NAME ClientsAndServers-PT-N0020P4-LTLFireability-06
FORMULA_NAME ClientsAndServers-PT-N0020P4-LTLFireability-07
FORMULA_NAME ClientsAndServers-PT-N0020P4-LTLFireability-08
FORMULA_NAME ClientsAndServers-PT-N0020P4-LTLFireability-09
FORMULA_NAME ClientsAndServers-PT-N0020P4-LTLFireability-10
FORMULA_NAME ClientsAndServers-PT-N0020P4-LTLFireability-11
FORMULA_NAME ClientsAndServers-PT-N0020P4-LTLFireability-12
FORMULA_NAME ClientsAndServers-PT-N0020P4-LTLFireability-13
FORMULA_NAME ClientsAndServers-PT-N0020P4-LTLFireability-14
FORMULA_NAME ClientsAndServers-PT-N0020P4-LTLFireability-15

=== Now, execution of the tool begins

BK_START 1552667533906

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 : !(((G(G(F("(StR>=1)"))))U(X(G(F("((SA>=1)&&(SwA>=1))"))))))
Formula 0 simplified : !(GF"(StR>=1)" U XGF"((SA>=1)&&(SwA>=1))")
Presburger conditions satisfied. Using coverability to approximate state space in K-Induction.
// Phase 1: matrix 18 rows 25 cols
invariant :Uf + SF + CF + -1'CR + MtF + SG + MpG + -1'Si + -2'StR + -2'SwG + -1'SpG + -1'SwA + -1'SpA + Cb + CwG = 72
invariant :SA + SF + -1'MpG + -1'MwU + -1'Mi + -1'SwA = -48
invariant :CG + CR + StR + SwG + SpG + -1'CwG = 0
invariant :CwA + Cb + CwG + Ci = 160
invariant :StF + Si + StR + SwG + SpG + SwA + SpA = 40
invariant :SR + SG + MpG + MwU + -1'SwG = 0
invariant :CA + CF + -1'Si + -1'StR + -1'SwG + -1'SpG + Cb + CwG + Ci = 120
invariant :MpA + MtF + MpG + MwU + Mi = 48
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 623 ms.
Running link step : CommandLine [args=[gcc, -shared, -o, gal.so, model.o], workingDir=/home/mcc/execution]
Link finished in 54 ms.
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=8, --when, --ltl, ([]([](<>((LTLAP0==true)))))U(X([](<>((LTLAP1==true))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
WARNING : LTS min runner thread failed on error :java.lang.RuntimeException: Unexpected exception when executing ltsmin :CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=8, --when, --ltl, ([]([](<>((LTLAP0==true)))))U(X([](<>((LTLAP1==true))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
255

BK_TIME_CONFINEMENT_REACHED

--------------------
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 15, 2019 4:32:16 PM 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 15, 2019 4:32:16 PM fr.lip6.move.gal.application.MccTranslator transformPNML
INFO: Parsing pnml file : /home/mcc/execution/model.pnml
Mar 15, 2019 4:32:16 PM fr.lip6.move.gal.nupn.PTNetReader loadFromXML
INFO: Load time of PNML (sax parser for PT used): 48 ms
Mar 15, 2019 4:32:16 PM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 25 places.
Mar 15, 2019 4:32:17 PM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 18 transitions.
Mar 15, 2019 4:32:17 PM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/model.pnml.img.gal : 11 ms
Mar 15, 2019 4:32:17 PM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 38 ms
Mar 15, 2019 4:32:17 PM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/LTLFireability.pnml.gal : 2 ms
Mar 15, 2019 4:32:17 PM fr.lip6.move.serialization.SerializationUtil serializePropertiesForITSLTLTools
INFO: Time to serialize properties into /home/mcc/execution/LTLFireability.ltl : 2 ms
Mar 15, 2019 4:32:17 PM fr.lip6.move.gal.semantics.DeterministicNextBuilder getDeterministicNext
INFO: Input system was already deterministic with 18 transitions.
Mar 15, 2019 4:32:17 PM fr.lip6.move.gal.gal2smt.bmc.KInductionSolver computeAndDeclareInvariants
INFO: Computed 8 place invariants in 14 ms
Mar 15, 2019 4:32:17 PM fr.lip6.move.gal.gal2smt.bmc.KInductionSolver init
INFO: Proved 25 variables to be positive in 144 ms
Mar 15, 2019 4:32:17 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeAblingMatrix
INFO: Computing symmetric may disable matrix : 18 transitions.
Mar 15, 2019 4:32:17 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of disable matrix completed :0/18 took 0 ms. Total solver calls (SAT/UNSAT): 0(0/0)
Mar 15, 2019 4:32:17 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)
Mar 15, 2019 4:32:17 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeAblingMatrix
INFO: Computing symmetric may enable matrix : 18 transitions.
Mar 15, 2019 4:32:17 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)
Mar 15, 2019 4:32:18 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeCoEnablingMatrix
INFO: Computing symmetric co enabling matrix : 18 transitions.
Mar 15, 2019 4:32:18 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Finished co-enabling matrix. took 657 ms. Total solver calls (SAT/UNSAT): 111(111/0)
Mar 15, 2019 4:32:18 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeDoNotAccord
INFO: Computing Do-Not-Accords matrix : 18 transitions.
Mar 15, 2019 4:32:19 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Completed DNA matrix. took 231 ms. Total solver calls (SAT/UNSAT): 33(0/33)
Mar 15, 2019 4:32:19 PM fr.lip6.move.gal.gal2pins.Gal2PinsTransformerNext transform
INFO: Built C files in 1731ms conformant to PINS in folder :/home/mcc/execution
pins2lts-mc, 0.000: Registering PINS so language module
pins2lts-mc( 3/ 8), 0.002: library has no initializer
pins2lts-mc( 2/ 8), 0.002: library has no initializer
pins2lts-mc( 2/ 8), 0.002: loading model GAL
pins2lts-mc( 0/ 8), 0.002: Loading model from ./gal.so
pins2lts-mc( 4/ 8), 0.001: library has no initializer
pins2lts-mc( 4/ 8), 0.001: loading model GAL
pins2lts-mc( 1/ 8), 0.002: library has no initializer
pins2lts-mc( 1/ 8), 0.002: loading model GAL
pins2lts-mc( 3/ 8), 0.002: loading model GAL
pins2lts-mc( 5/ 8), 0.000: library has no initializer
pins2lts-mc( 0/ 8), 0.002: library has no initializer
pins2lts-mc( 7/ 8), 0.000: library has no initializer
pins2lts-mc( 3/ 8), 0.003: completed loading model GAL
pins2lts-mc( 3/ 8), 0.003: LTL layer: formula: ([]([](<>((LTLAP0==true)))))U(X([](<>((LTLAP1==true)))))
pins2lts-mc( 4/ 8), 0.002: completed loading model GAL
pins2lts-mc( 1/ 8), 0.003: completed loading model GAL
pins2lts-mc( 2/ 8), 0.003: completed loading model GAL
pins2lts-mc( 6/ 8), 0.001: library has no initializer
pins2lts-mc( 6/ 8), 0.001: loading model GAL
pins2lts-mc( 7/ 8), 0.001: loading model GAL
pins2lts-mc( 0/ 8), 0.003: loading model GAL
pins2lts-mc( 6/ 8), 0.002: completed loading model GAL
pins2lts-mc( 0/ 8), 0.003: completed loading model GAL
pins2lts-mc( 5/ 8), 0.001: loading model GAL
pins2lts-mc( 5/ 8), 0.002: completed loading model GAL
pins2lts-mc( 3/ 8), 0.003: "([]([](<>((LTLAP0==true)))))U(X([](<>((LTLAP1==true)))))" is not a file, parsing as formula...
pins2lts-mc( 3/ 8), 0.004: Using Spin LTL semantics
pins2lts-mc( 7/ 8), 0.003: completed loading model GAL
pins2lts-mc( 0/ 8), 0.021: Weak Buchi automaton detected, adding non-accepting as progress label.
pins2lts-mc( 0/ 8), 0.077: DFS-FIFO for weak LTL, using special progress label 30
pins2lts-mc( 0/ 8), 0.077: There are 31 state labels and 1 edge labels
pins2lts-mc( 0/ 8), 0.077: State length is 26, there are 21 groups
pins2lts-mc( 0/ 8), 0.077: Running dfsfifo using 8 cores
pins2lts-mc( 0/ 8), 0.077: Using a tree table with 2^27 elements
pins2lts-mc( 0/ 8), 0.077: Successor permutation: rr
pins2lts-mc( 0/ 8), 0.077: Global bits: 2, count bits: 0, local bits: 0
pins2lts-mc( 7/ 8), 0.171: ~115 levels ~960 states ~6520 transitions
pins2lts-mc( 5/ 8), 0.298: ~226 levels ~1920 states ~14744 transitions
pins2lts-mc( 7/ 8), 0.581: ~443 levels ~3840 states ~35176 transitions
pins2lts-mc( 5/ 8), 0.820: ~799 levels ~7680 states ~51872 transitions
pins2lts-mc( 5/ 8), 0.883: ~799 levels ~15360 states ~65728 transitions
pins2lts-mc( 5/ 8), 0.988: ~799 levels ~30720 states ~97144 transitions
pins2lts-mc( 2/ 8), 1.164: ~1657 levels ~61440 states ~162848 transitions
pins2lts-mc( 2/ 8), 1.428: ~1667 levels ~122880 states ~313072 transitions
pins2lts-mc( 2/ 8), 1.901: ~1667 levels ~245760 states ~620544 transitions
pins2lts-mc( 2/ 8), 2.637: ~1667 levels ~491520 states ~1275224 transitions
pins2lts-mc( 2/ 8), 3.714: ~1667 levels ~983040 states ~2619560 transitions
pins2lts-mc( 5/ 8), 5.376: ~1659 levels ~1966080 states ~5372296 transitions
pins2lts-mc( 7/ 8), 8.050: ~1681 levels ~3932160 states ~10768248 transitions
pins2lts-mc( 5/ 8), 13.395: ~1659 levels ~7864320 states ~21274256 transitions
pins2lts-mc( 0/ 8), 24.122: ~1642 levels ~15728640 states ~39105856 transitions
pins2lts-mc( 0/ 8), 45.997: ~1642 levels ~31457280 states ~79590264 transitions
pins2lts-mc( 0/ 8), 93.333: ~1642 levels ~62914560 states ~158228272 transitions
pins2lts-mc( 4/ 8), 206.271: Error: tree leafs table full! Change -s/--ratio.
pins2lts-mc( 0/ 8), 206.350:
pins2lts-mc( 0/ 8), 206.350: mean standard work distribution: 3.9% (states) 5.6% (transitions)
pins2lts-mc( 0/ 8), 206.350:
pins2lts-mc( 0/ 8), 206.350: Explored 116109805 states 359021716 transitions, fanout: 3.092
pins2lts-mc( 0/ 8), 206.350: Total exploration time 206.260 sec (206.190 sec minimum, 206.216 sec on average)
pins2lts-mc( 0/ 8), 206.350: States per second: 562929, Transitions per second: 1740627
pins2lts-mc( 0/ 8), 206.350:
pins2lts-mc( 0/ 8), 206.350: Progress states detected: 1
pins2lts-mc( 0/ 8), 206.350: Redundant explorations: 47.1640
pins2lts-mc( 0/ 8), 206.350:
pins2lts-mc( 0/ 8), 206.350: Queue width: 8B, total height: 13326, memory: 0.10MB
pins2lts-mc( 0/ 8), 206.350: Tree memory: 857.9MB, 11.4 B/state, compr.: 10.8%
pins2lts-mc( 0/ 8), 206.350: Tree fill ratio (roots/leafs): 58.0%/99.0%
pins2lts-mc( 0/ 8), 206.350: Stored 19 string chucks using 0MB
pins2lts-mc( 0/ 8), 206.350: Total memory used for chunk indexing: 0MB
pins2lts-mc( 0/ 8), 206.350: Est. total memory use: 858.0MB (~1024.1MB paged-in)
java.lang.RuntimeException: Unexpected exception when executing ltsmin :CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=8, --when, --ltl, ([]([](<>((LTLAP0==true)))))U(X([](<>((LTLAP1==true))))), --buchi-type=spotba], workingDir=/home/mcc/execution]
255
at fr.lip6.move.gal.application.LTSminRunner.checkProperty(LTSminRunner.java:167)
at fr.lip6.move.gal.application.LTSminRunner.access$9(LTSminRunner.java:122)
at fr.lip6.move.gal.application.LTSminRunner$1.run(LTSminRunner.java:91)
at java.lang.Thread.run(Thread.java:748)

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="ClientsAndServers-PT-N0020P4"
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 ClientsAndServers-PT-N0020P4, 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 r030-smll-155225127000340"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/ClientsAndServers-PT-N0020P4.tgz
mv ClientsAndServers-PT-N0020P4 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 ;