fond
Model Checking Contest 2023
13th edition, Paris, France, April 26, 2023 (at TOOLympics II)
Execution of r181-tall-167838868400207
Last Updated
May 14, 2023

About the Execution of LoLa+red for FamilyReunion-COL-L00200M0020C010P010G005

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
2165.176 226685.00 342283.00 3684.70 T normal

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.r181-tall-167838868400207.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 lolaxred
Input is FamilyReunion-COL-L00200M0020C010P010G005, examination is QuasiLiveness
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r181-tall-167838868400207
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 596K
-rw-r--r-- 1 mcc users 7.8K Feb 26 17:35 CTLCardinality.txt
-rw-r--r-- 1 mcc users 84K Feb 26 17:35 CTLCardinality.xml
-rw-r--r-- 1 mcc users 7.4K Feb 26 15:53 CTLFireability.txt
-rw-r--r-- 1 mcc users 54K Feb 26 15:53 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:40 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 3.8K Feb 25 16:05 LTLCardinality.txt
-rw-r--r-- 1 mcc users 25K Feb 25 16:05 LTLCardinality.xml
-rw-r--r-- 1 mcc users 3.0K Feb 25 16:05 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K Feb 25 16:05 LTLFireability.xml
-rw-r--r-- 1 mcc users 12K Feb 26 21:31 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 120K Feb 26 21:31 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 10K Feb 26 20:18 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 63K Feb 26 20:18 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 2.0K Feb 25 16:05 UpperBounds.txt
-rw-r--r-- 1 mcc users 4.0K Feb 25 16:05 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 5 18:22 equiv_pt
-rw-r--r-- 1 mcc users 24 Mar 5 18:22 instance
-rw-r--r-- 1 mcc users 5 Mar 5 18:22 iscolored
-rw-r--r-- 1 mcc users 146K Mar 5 18:22 model.pnml

--------------------
content from stdout:

=== Data for post analysis generated by BenchKit (invocation template)

The expected result is a vector of booleans
BOOL_VECTOR

FORMULA_NAME QuasiLiveness

=== Now, execution of the tool begins

BK_START 1678542271340

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=lolaxred
BK_EXAMINATION=QuasiLiveness
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=1800
BK_INPUT=FamilyReunion-COL-L00200M0020C010P010G005
Applying reductions before tool lola
Invoking reducer
Running Version 202303021504
[2023-03-11 13:44:32] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, QuasiLiveness, -timeout, 180, -rebuildPNML]
[2023-03-11 13:44:32] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-11 13:44:32] [INFO ] Detected file is not PT type :http://www.pnml.org/version-2009/grammar/symmetricnet
log4j:WARN No appenders could be found for logger (org.apache.axiom.locator.DefaultOMMetaFactoryLocator).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
[2023-03-11 13:44:33] [WARNING] Using fallBack plugin, rng conformance not checked
[2023-03-11 13:44:34] [INFO ] Load time of PNML (colored model parsed with PNMLFW) : 1188 ms
[2023-03-11 13:44:34] [INFO ] Detected 5 constant HL places corresponding to 56 PT places.
[2023-03-11 13:44:34] [INFO ] Imported 104 HL places and 66 HL transitions for a total of 144109 PT places and 134480.0 transition bindings in 34 ms.
[2023-03-11 13:44:34] [INFO ] Unfolded HLPN to a Petri net with 144109 places and 134279 transitions 384937 arcs in 500 ms.
[2023-03-11 13:44:34] [INFO ] Unfolded 66 HLPN properties in 17 ms.
Initial state reduction rules removed 1 formulas.
[2023-03-11 13:44:34] [INFO ] Reduced 4020 identical enabling conditions.
[2023-03-11 13:44:34] [INFO ] Reduced 2010 identical enabling conditions.
[2023-03-11 13:44:34] [INFO ] Reduced 1206 identical enabling conditions.
[2023-03-11 13:44:34] [INFO ] Reduced 2010 identical enabling conditions.
[2023-03-11 13:44:34] [INFO ] Reduced 2010 identical enabling conditions.
Deduced a syphon composed of 201 places in 431 ms
Reduce places removed 257 places and 0 transitions.
Incomplete random walk after 10000 steps, including 2 resets, run finished after 7435 ms. (steps per millisecond=1 ) properties (out of 65) seen :31
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 51 ms. (steps per millisecond=19 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 43 ms. (steps per millisecond=23 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 23 ms. (steps per millisecond=43 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 62 ms. (steps per millisecond=16 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 124 ms. (steps per millisecond=8 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 22 ms. (steps per millisecond=45 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 120 ms. (steps per millisecond=8 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 75 ms. (steps per millisecond=13 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 22 ms. (steps per millisecond=45 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 120 ms. (steps per millisecond=8 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 62 ms. (steps per millisecond=16 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 92 ms. (steps per millisecond=10 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 43 ms. (steps per millisecond=23 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 22 ms. (steps per millisecond=45 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 77 ms. (steps per millisecond=13 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 43 ms. (steps per millisecond=23 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 42 ms. (steps per millisecond=23 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 27 ms. (steps per millisecond=37 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 27 ms. (steps per millisecond=37 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 64 ms. (steps per millisecond=15 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 65 ms. (steps per millisecond=15 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 134 ms. (steps per millisecond=7 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 72 ms. (steps per millisecond=13 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 16 ms. (steps per millisecond=62 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 58 ms. (steps per millisecond=17 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 115 ms. (steps per millisecond=8 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 21 ms. (steps per millisecond=47 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 118 ms. (steps per millisecond=8 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 118 ms. (steps per millisecond=8 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 21 ms. (steps per millisecond=47 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 22 ms. (steps per millisecond=45 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 20 ms. (steps per millisecond=50 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 20 ms. (steps per millisecond=50 ) properties (out of 34) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 20 ms. (steps per millisecond=50 ) properties (out of 34) seen :0
Running SMT prover for 34 properties.
// Phase 1: matrix 134279 rows 143852 cols
[2023-03-11 13:46:46] [WARNING] Invariant computation timed out after 120 seconds.
java.lang.RuntimeException: SMT solver raised an error when submitting script. Raised (error "Failed to assert expression: java.io.IOException: Stream close...
at fr.lip6.move.gal.structural.smt.SMTUtils.execAndCheckResult(SMTUtils.java:251)
at fr.lip6.move.gal.structural.smt.DeadlockTester.checkResults(DeadlockTester.java:797)
at fr.lip6.move.gal.structural.smt.DeadlockTester.verifyPossible(DeadlockTester.java:611)
at fr.lip6.move.gal.structural.smt.DeadlockTester.testUnreachableWithSMTIncremental(DeadlockTester.java:339)
at fr.lip6.move.gal.structural.smt.DeadlockTester.testUnreachableWithSMT(DeadlockTester.java:223)
at fr.lip6.move.gal.application.solver.ReachabilitySolver.applyReductions(ReachabilitySolver.java:95)
at fr.lip6.move.gal.application.solver.global.GlobalPropertySolver.applyReachabilitySolver(GlobalPropertySolver.java:724)
at fr.lip6.move.gal.application.solver.global.GlobalPropertySolver.solveProperty(GlobalPropertySolver.java:558)
at fr.lip6.move.gal.application.solver.global.GlobalPropertySolver.preSolveLiveness(GlobalPropertySolver.java:412)
at fr.lip6.move.gal.application.solver.global.GlobalPropertySolver.preStableMarking(GlobalPropertySolver.java:321)
at fr.lip6.move.gal.application.solver.global.GlobalPropertySolver.solveProperty(GlobalPropertySolver.java:294)
at fr.lip6.move.gal.application.Application.startNoEx(Application.java:386)
at fr.lip6.move.gal.application.Application.start(Application.java:178)
at fr.lip6.move.gal.itscl.application.Application.start(Application.java:45)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:136)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:402)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:659)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:596)
at org.eclipse.equinox.launcher.Main.run(Main.java:1467)
at org.eclipse.equinox.launcher.Main.main(Main.java:1440)
[2023-03-11 13:47:11] [WARNING] SMT solver failed with error :SMT solver raised an error when submitting script.... while checking expressions.
[2023-03-11 13:47:11] [INFO ] After 25204ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0
Fused 34 Parikh solutions to 1 different solutions.
Parikh walk visited 0 properties in 1 ms.
Support contains 36225 out of 143852 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 143852/143852 places, 134279/134279 transitions.
Graph (complete) has 236398 edges and 143852 vertex of which 143178 are kept as prefixes of interest. Removing 674 places using SCC suffix rule.178 ms
Discarding 674 places :
Also discarding 0 output transitions
Discarding 25326 places :
Implicit places reduction removed 25326 places
Drop transitions removed 61707 transitions
Trivial Post-agglo rules discarded 61707 transitions
Performed 61707 trivial Post agglomeration. Transition count delta: 61707
Iterating post reduction 0 with 87033 rules applied. Total rules applied 87034 place count 117852 transition count 72572
[2023-03-11 13:47:36] [INFO ] Computed 30578 place invariants in 170010 ms
Reduce places removed 61707 places and 0 transitions.
Iterating post reduction 1 with 61707 rules applied. Total rules applied 148741 place count 56145 transition count 72572
Performed 402 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 402 Pre rules applied. Total rules applied 148741 place count 56145 transition count 72170
Deduced a syphon composed of 402 places in 81 ms
Reduce places removed 402 places and 0 transitions.
Iterating global reduction 2 with 804 rules applied. Total rules applied 149545 place count 55743 transition count 72170
Performed 5025 Post agglomeration using F-continuation condition.Transition count delta: 5025
Deduced a syphon composed of 5025 places in 68 ms
Reduce places removed 5025 places and 0 transitions.
Iterating global reduction 2 with 10050 rules applied. Total rules applied 159595 place count 50718 transition count 67145
Free-agglomeration rule applied 2211 times.
Iterating global reduction 2 with 2211 rules applied. Total rules applied 161806 place count 50718 transition count 64934
Ensure Unique test removed 201 places
Reduce places removed 2412 places and 0 transitions.
Ensure Unique test removed 2010 transitions
Reduce isomorphic transitions removed 2010 transitions.
Iterating post reduction 2 with 4422 rules applied. Total rules applied 166228 place count 48306 transition count 62924
Performed 201 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 201 Pre rules applied. Total rules applied 166228 place count 48306 transition count 62723
Deduced a syphon composed of 201 places in 91 ms
Ensure Unique test removed 201 places
Reduce places removed 402 places and 0 transitions.
Iterating global reduction 3 with 603 rules applied. Total rules applied 166831 place count 47904 transition count 62723
Free-agglomeration rule (complex) applied 4422 times.
Iterating global reduction 3 with 4422 rules applied. Total rules applied 171253 place count 47904 transition count 98501
Ensure Unique test removed 201 places
Reduce places removed 4623 places and 0 transitions.
Iterating post reduction 3 with 4623 rules applied. Total rules applied 175876 place count 43281 transition count 98501
Discarding 20 places :
Symmetric choice reduction at 4 with 20 rule applications. Total rules 175896 place count 43261 transition count 54281
Iterating global reduction 4 with 20 rules applied. Total rules applied 175916 place count 43261 transition count 54281
Discarding 4020 places :
Symmetric choice reduction at 4 with 4020 rule applications. Total rules 179936 place count 39241 transition count 50261
Ensure Unique test removed 201 places
Iterating global reduction 4 with 4221 rules applied. Total rules applied 184157 place count 39040 transition count 50261
Ensure Unique test removed 4020 transitions
Reduce isomorphic transitions removed 4020 transitions.
Drop transitions removed 201 transitions
Trivial Post-agglo rules discarded 201 transitions
Performed 201 trivial Post agglomeration. Transition count delta: 201
Iterating post reduction 4 with 4221 rules applied. Total rules applied 188378 place count 39040 transition count 46040
Reduce places removed 201 places and 0 transitions.
Iterating post reduction 5 with 201 rules applied. Total rules applied 188579 place count 38839 transition count 46040
Reduce places removed 201 places and 201 transitions.
Iterating global reduction 6 with 201 rules applied. Total rules applied 188780 place count 38638 transition count 45839
Applied a total of 188780 rules in 62382 ms. Remains 38638 /143852 variables (removed 105214) and now considering 45839/134279 (removed 88440) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 62388 ms. Remains : 38638/143852 places, 45839/134279 transitions.
Finished random walk after 4515 steps, including 0 resets, run visited all 34 properties in 1415 ms. (steps per millisecond=3 )
Able to resolve query QuasiLiveness after proving 66 properties.
FORMULA QuasiLiveness TRUE TECHNIQUES RANDOM_WALK TOPOLOGICAL INITIAL_STATE
Total runtime 223030 ms.
ITS solved all properties within timeout

BK_STOP 1678542498025

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

+ 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//../reducer/bin//../../itstools//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202303021504.jar
+ VERSION=202303021504
+ echo 'Running Version 202303021504'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination QuasiLiveness -timeout 180 -rebuildPNML

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="FamilyReunion-COL-L00200M0020C010P010G005"
export BK_EXAMINATION="QuasiLiveness"
export BK_TOOL="lolaxred"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="1800"
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 lolaxred"
echo " Input is FamilyReunion-COL-L00200M0020C010P010G005, examination is QuasiLiveness"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r181-tall-167838868400207"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/FamilyReunion-COL-L00200M0020C010P010G005.tgz
mv FamilyReunion-COL-L00200M0020C010P010G005 execution
cd execution
if [ "QuasiLiveness" = "ReachabilityDeadlock" ] || [ "QuasiLiveness" = "UpperBounds" ] || [ "QuasiLiveness" = "QuasiLiveness" ] || [ "QuasiLiveness" = "StableMarking" ] || [ "QuasiLiveness" = "Liveness" ] || [ "QuasiLiveness" = "OneSafe" ] || [ "QuasiLiveness" = "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 [ "QuasiLiveness" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "QuasiLiveness" != "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 "QuasiLiveness.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property QuasiLiveness.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "QuasiLiveness.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 '' QuasiLiveness.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "QuasiLiveness" = "ReachabilityDeadlock" ] || [ "QuasiLiveness" = "QuasiLiveness" ] || [ "QuasiLiveness" = "StableMarking" ] || [ "QuasiLiveness" = "Liveness" ] || [ "QuasiLiveness" = "OneSafe" ] ; then
echo "FORMULA_NAME QuasiLiveness"
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 ;