Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2023-input.r453-smll-167912644900022.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2023-input.qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
...................
=====================================================================
Generated by BenchKit 2-5348
Executing tool itstools
Input is SmallOperatingSystem-PT-MT0032DC0016, examination is ReachabilityCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r453-smll-167912644900022
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 456K
-rw-r--r-- 1 mcc users 6.3K Feb 25 12:41 CTLCardinality.txt
-rw-r--r-- 1 mcc users 53K Feb 25 12:41 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.9K Feb 25 12:40 CTLFireability.txt
-rw-r--r-- 1 mcc users 44K Feb 25 12:40 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:41 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.7K Jan 29 11:41 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 4.5K Feb 25 17:07 LTLCardinality.txt
-rw-r--r-- 1 mcc users 25K Feb 25 17:07 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.9K Feb 25 17:07 LTLFireability.txt
-rw-r--r-- 1 mcc users 19K Feb 25 17:07 LTLFireability.xml
-rw-r--r-- 1 mcc users 12K Feb 25 12:42 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 93K Feb 25 12:42 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 13K Feb 25 12:41 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 101K Feb 25 12:41 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 2.1K Feb 25 17:07 UpperBounds.txt
-rw-r--r-- 1 mcc users 4.1K Feb 25 17:07 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 5 18:23 equiv_col
-rw-r--r-- 1 mcc users 13 Mar 5 18:23 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:23 iscolored
-rw-r--r-- 1 mcc users 8.2K Mar 5 18:23 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 SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-00
FORMULA_NAME SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-01
FORMULA_NAME SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-02
FORMULA_NAME SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-03
FORMULA_NAME SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-04
FORMULA_NAME SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-05
FORMULA_NAME SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-06
FORMULA_NAME SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-07
FORMULA_NAME SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-08
FORMULA_NAME SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-09
FORMULA_NAME SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-10
FORMULA_NAME SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-11
FORMULA_NAME SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-12
FORMULA_NAME SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-13
FORMULA_NAME SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-14
FORMULA_NAME SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-15

=== Now, execution of the tool begins

BK_START 1679172299494

bash -c /home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n "BK_STOP " ; date -u +%s%3N
Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=ReachabilityCardinality
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=SmallOperatingSystem-PT-MT0032DC0016
Not applying reductions.
Model is PT
ReachabilityCardinality PT
Running Version 202303021504
[2023-03-18 20:45:02] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityCardinality, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2023-03-18 20:45:03] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-18 20:45:03] [INFO ] Load time of PNML (sax parser for PT used): 47 ms
[2023-03-18 20:45:03] [INFO ] Transformed 9 places.
[2023-03-18 20:45:03] [INFO ] Transformed 8 transitions.
[2023-03-18 20:45:03] [INFO ] Parsed PT model containing 9 places and 8 transitions and 27 arcs in 200 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityCardinality.xml in 36 ms.
Working with output stream class java.io.PrintStream
Incomplete random walk after 10015 steps, including 2 resets, run finished after 207 ms. (steps per millisecond=48 ) properties (out of 16) seen :7
FORMULA SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-15 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-12 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-09 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-07 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-06 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-05 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-03 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
[2023-03-18 20:45:03] [INFO ] Flatten gal took : 39 ms
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 328 ms. (steps per millisecond=30 ) properties (out of 9) seen :0
[2023-03-18 20:45:03] [INFO ] Flatten gal took : 9 ms
[2023-03-18 20:45:03] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality2847756044524155608.gal : 7 ms
[2023-03-18 20:45:03] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality13154623696386370405.prop : 9 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202303021504/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality2847756044524155608.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality13154623696386370405.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202303021504/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
Loading property file /tmp/ReachabilityCardinality13154623696386370405.prop.
SDD proceeding with computation,9 properties remain. new max is 4
SDD size :1 after 6
SDD proceeding with computation,9 properties remain. new max is 8
SDD size :6 after 20
SDD proceeding with computation,9 properties remain. new max is 16
SDD size :20 after 104
SDD proceeding with computation,9 properties remain. new max is 32
SDD size :104 after 532
SDD proceeding with computation,9 properties remain. new max is 64
SDD size :532 after 3115
SDD proceeding with computation,9 properties remain. new max is 128
SDD size :3115 after 26380
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
petri\_inst\_inst,354501,0.176828,5332,2,474,11,9932,15,0,248,9648,0
Total reachable state count : 354501

Verifying 9 reachability properties.
Invariant property SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-00 is true.
FORMULA SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-00 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-00,0,0.178897,5332,1,0,11,9932,15,0,288,9648,0
Reachability property SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-01 does not hold.
FORMULA SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-01 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
No reachable states exhibit your property : SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-01

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-01,0,0.183153,5596,1,0,11,9932,15,0,380,9648,0
Invariant property SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-02 is true.
FORMULA SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-02 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-02,0,0.185997,5596,1,0,11,9932,15,0,421,9648,0
Invariant property SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-04 is true.
FORMULA SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-04 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-04,0,0.186345,5596,1,0,11,9932,15,0,421,9648,0
Reachability property SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-08 does not hold.
FORMULA SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-08 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
No reachable states exhibit your property : SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-08

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-08,0,0.18664,5596,1,0,11,9932,15,0,421,9648,0
Reachability property SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-10 does not hold.
FORMULA SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-10 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
No reachable states exhibit your property : SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-10

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-10,0,0.188047,5596,1,0,11,9932,15,0,421,9648,0
Invariant property SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-11 is true.
FORMULA SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-11 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-11,0,0.191263,5596,1,0,11,9932,15,0,518,9648,0
Reachability property SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-13 does not hold.
FORMULA SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-13 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
No reachable states exhibit your property : SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-13

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-13,0,0.193486,5596,1,0,11,9932,15,0,550,9648,0
Invariant property SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-14 is true.
FORMULA SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-14 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
SmallOperatingSystem-PT-MT0032DC0016-ReachabilityCardinality-14,0,0.196808,5596,1,0,11,9932,15,0,631,9648,0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 538 ms. (steps per millisecond=18 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 271 ms. (steps per millisecond=36 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 168 ms. (steps per millisecond=59 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 92 ms. (steps per millisecond=108 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 74 ms. (steps per millisecond=135 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 83 ms. (steps per millisecond=120 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 75 ms. (steps per millisecond=133 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 117 ms. (steps per millisecond=85 ) properties (out of 9) seen :0
Running SMT prover for 9 properties.
// Phase 1: matrix 8 rows 9 cols
[2023-03-18 20:45:05] [INFO ] Computed 4 place invariants in 3 ms
[2023-03-18 20:45:05] [INFO ] After 175ms SMT Verify possible using all constraints in real domain returned unsat :1 sat :0 real:8
[2023-03-18 20:45:05] [INFO ] [Nat]Absence check using 4 positive place invariants in 2 ms returned sat
[2023-03-18 20:45:05] [INFO ] After 67ms SMT Verify possible using all constraints in natural domain returned unsat :9 sat :0
Fused 9 Parikh solutions to 0 different solutions.
Parikh walk visited 0 properties in 0 ms.
All properties solved without resorting to model-checking.
Total runtime 2638 ms.

BK_STOP 1679172306692

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

+ export BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
+ BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ ReachabilityCardinality = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution ReachabilityCardinality -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
+ export PYTHONPATH=/home/mcc/BenchKit/itstools/pylibs
+ PYTHONPATH=/home/mcc/BenchKit/itstools/pylibs
+ export LD_LIBRARY_PATH=/home/mcc/BenchKit/itstools/pylibs:
+ LD_LIBRARY_PATH=/home/mcc/BenchKit/itstools/pylibs:
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202303021504.jar
+ VERSION=202303021504
+ echo 'Running Version 202303021504'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination ReachabilityCardinality -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600

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="SmallOperatingSystem-PT-MT0032DC0016"
export BK_EXAMINATION="ReachabilityCardinality"
export BK_TOOL="itstools"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"
export BK_BIN_PATH="/home/mcc/BenchKit/bin/"

# 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 2-5348"
echo " Executing tool itstools"
echo " Input is SmallOperatingSystem-PT-MT0032DC0016, examination is ReachabilityCardinality"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r453-smll-167912644900022"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/SmallOperatingSystem-PT-MT0032DC0016.tgz
mv SmallOperatingSystem-PT-MT0032DC0016 execution
cd execution
if [ "ReachabilityCardinality" = "ReachabilityDeadlock" ] || [ "ReachabilityCardinality" = "UpperBounds" ] || [ "ReachabilityCardinality" = "QuasiLiveness" ] || [ "ReachabilityCardinality" = "StableMarking" ] || [ "ReachabilityCardinality" = "Liveness" ] || [ "ReachabilityCardinality" = "OneSafe" ] || [ "ReachabilityCardinality" = "StateSpace" ]; 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 [ "ReachabilityCardinality" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "ReachabilityCardinality" != "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 "ReachabilityCardinality.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property ReachabilityCardinality.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "ReachabilityCardinality.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 '' ReachabilityCardinality.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "ReachabilityCardinality" = "ReachabilityDeadlock" ] || [ "ReachabilityCardinality" = "QuasiLiveness" ] || [ "ReachabilityCardinality" = "StableMarking" ] || [ "ReachabilityCardinality" = "Liveness" ] || [ "ReachabilityCardinality" = "OneSafe" ] ; then
echo "FORMULA_NAME ReachabilityCardinality"
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 ;