fond
Model Checking Contest 2023
13th edition, Paris, France, April 26, 2023 (at TOOLympics II)
Execution of r311-tall-167873964700563
Last Updated
May 14, 2023

About the Execution of LTSMin+red for QuasiCertifProtocol-PT-28

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
611.331 394286.00 484352.00 851.10 F 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.r311-tall-167873964700563.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 ltsminxred
Input is QuasiCertifProtocol-PT-28, examination is StableMarking
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r311-tall-167873964700563
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 2.8M
-rw-r--r-- 1 mcc users 80K Feb 26 01:36 CTLCardinality.txt
-rw-r--r-- 1 mcc users 452K Feb 26 01:36 CTLCardinality.xml
-rw-r--r-- 1 mcc users 19K Feb 26 01:27 CTLFireability.txt
-rw-r--r-- 1 mcc users 124K Feb 26 01:27 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:40 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 46K Feb 25 16:37 LTLCardinality.txt
-rw-r--r-- 1 mcc users 182K Feb 25 16:37 LTLCardinality.xml
-rw-r--r-- 1 mcc users 9.9K Feb 25 16:37 LTLFireability.txt
-rw-r--r-- 1 mcc users 51K Feb 25 16:37 LTLFireability.xml
-rw-r--r-- 1 mcc users 106K Feb 26 01:45 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 644K Feb 26 01:45 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 35K Feb 26 01:39 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 218K Feb 26 01:39 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 3.4K Feb 25 16:37 UpperBounds.txt
-rw-r--r-- 1 mcc users 9.4K Feb 25 16:37 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 5 18:23 equiv_col
-rw-r--r-- 1 mcc users 3 Mar 5 18:23 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:23 iscolored
-rw-r--r-- 1 mcc users 749K 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

FORMULA_NAME StableMarking

=== Now, execution of the tool begins

BK_START 1679472496933

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=ltsminxred
BK_EXAMINATION=StableMarking
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=1800
BK_INPUT=QuasiCertifProtocol-PT-28
Applying reductions before tool ltsmin
Invoking reducer
Running Version 202303021504
[2023-03-22 08:08:18] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, StableMarking, -timeout, 180, -rebuildPNML]
[2023-03-22 08:08:18] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-22 08:08:18] [INFO ] Load time of PNML (sax parser for PT used): 109 ms
[2023-03-22 08:08:18] [INFO ] Transformed 2998 places.
[2023-03-22 08:08:18] [INFO ] Transformed 446 transitions.
[2023-03-22 08:08:18] [INFO ] Parsed PT model containing 2998 places and 446 transitions and 6489 arcs in 178 ms.
Structural test allowed to assert that 32 places are NOT stable. Took 12 ms.
Incomplete random walk after 10000 steps, including 301 resets, run finished after 2397 ms. (steps per millisecond=4 ) properties (out of 2966) seen :89
Probabilistic random walk after 30001 steps, saw 5633 distinct states, run finished after 1358 ms. (steps per millisecond=22 ) properties seen :0
Running SMT prover for 2877 properties.
// Phase 1: matrix 446 rows 2998 cols
[2023-03-22 08:08:22] [INFO ] Computed 2553 place invariants in 128 ms
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.assertInvariants(DeadlockTester.java:2340)
at fr.lip6.move.gal.structural.smt.DeadlockTester.verifyPossible(DeadlockTester.java:618)
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)
[2023-03-22 08:08:48] [WARNING] SMT solver failed with error :SMT solver raised an error when submitting script.... while checking expressions.
[2023-03-22 08:08:48] [INFO ] After 25076ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0
Fused 2877 Parikh solutions to 1 different solutions.
Parikh walk visited 0 properties in 6 ms.
Support contains 2877 out of 2998 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 2998/2998 places, 446/446 transitions.
Graph (complete) has 30318 edges and 2998 vertex of which 2996 are kept as prefixes of interest. Removing 2 places using SCC suffix rule.19 ms
Discarding 2 places :
Also discarding 0 output transitions
Drop transitions removed 59 transitions
Reduce isomorphic transitions removed 59 transitions.
Discarding 29 places :
Implicit places reduction removed 29 places
Iterating post reduction 0 with 88 rules applied. Total rules applied 89 place count 2967 transition count 387
Performed 29 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 1 with 29 Pre rules applied. Total rules applied 89 place count 2967 transition count 358
Deduced a syphon composed of 29 places in 2 ms
Ensure Unique test removed 57 places
Reduce places removed 86 places and 0 transitions.
Iterating global reduction 1 with 115 rules applied. Total rules applied 204 place count 2881 transition count 358
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 1 with 1 Pre rules applied. Total rules applied 204 place count 2881 transition count 357
Deduced a syphon composed of 1 places in 8 ms
Ensure Unique test removed 1 places
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 1 with 3 rules applied. Total rules applied 207 place count 2879 transition count 357
Applied a total of 207 rules in 195 ms. Remains 2879 /2998 variables (removed 119) and now considering 357/446 (removed 89) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 195 ms. Remains : 2879/2998 places, 357/446 transitions.
Interrupted random walk after 250882 steps, including 9492 resets, run timeout after 30001 ms. (steps per millisecond=8 ) properties seen 1048
Incomplete Best-First random walk after 1001 steps, including 4 resets, run finished after 12 ms. (steps per millisecond=83 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 3 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 3 resets, run finished after 18 ms. (steps per millisecond=55 ) properties (out of 1829) 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 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 3 resets, run finished after 11 ms. (steps per millisecond=91 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 3 resets, run finished after 12 ms. (steps per millisecond=83 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 4 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 3 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 4 resets, run finished after 11 ms. (steps per millisecond=91 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 6 resets, run finished after 11 ms. (steps per millisecond=91 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 4 resets, run finished after 11 ms. (steps per millisecond=91 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 3 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 3 resets, run finished after 11 ms. (steps per millisecond=91 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 6 resets, run finished after 13 ms. (steps per millisecond=77 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 3 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 11 ms. (steps per millisecond=91 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 4 resets, run finished after 11 ms. (steps per millisecond=91 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 4 resets, run finished after 11 ms. (steps per millisecond=91 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1000 steps, including 4 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 4 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 3 resets, run finished after 11 ms. (steps per millisecond=91 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 4 resets, run finished after 11 ms. (steps per millisecond=91 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 3 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 6 resets, run finished after 11 ms. (steps per millisecond=91 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 5 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 3 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 1829) seen :0
Incomplete Best-First random walk after 1001 steps, including 4 resets, run finished after 11 ms. (steps per millisecond=91 ) properties (out of 1829) seen :0
Running SMT prover for 1829 properties.
// Phase 1: matrix 357 rows 2879 cols
[2023-03-22 08:09:18] [INFO ] Computed 2522 place invariants in 35 ms
[2023-03-22 08:10:55] [INFO ] After 96112ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1829
[2023-03-22 08:12:07] [INFO ] [Nat]Absence check using 0 positive and 2522 generalized place invariants in 633 ms returned sat
[2023-03-22 08:14:40] [INFO ] After 70250ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1829
[2023-03-22 08:14:40] [INFO ] After 70253ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1829
Attempting to minimize the solution found.
Minimization took 0 ms.
[2023-03-22 08:14:40] [INFO ] After 225031ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1829
Fused 1829 Parikh solutions to 107 different solutions.
Finished Parikh walk after 201 steps, including 0 resets, run visited all 1 properties in 5 ms. (steps per millisecond=40 )
Parikh walk visited 1829 properties in 10231 ms.
Able to resolve query StableMarking after proving 2967 properties.
FORMULA StableMarking FALSE TECHNIQUES RANDOM_WALK PARIKH_WALK MARKED_SUFFIX_TEST TOPOLOGICAL
Total runtime 392077 ms.
ITS solved all properties within timeout

BK_STOP 1679472891219

--------------------
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 StableMarking -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="QuasiCertifProtocol-PT-28"
export BK_EXAMINATION="StableMarking"
export BK_TOOL="ltsminxred"
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 ltsminxred"
echo " Input is QuasiCertifProtocol-PT-28, examination is StableMarking"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r311-tall-167873964700563"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/QuasiCertifProtocol-PT-28.tgz
mv QuasiCertifProtocol-PT-28 execution
cd execution
if [ "StableMarking" = "ReachabilityDeadlock" ] || [ "StableMarking" = "UpperBounds" ] || [ "StableMarking" = "QuasiLiveness" ] || [ "StableMarking" = "StableMarking" ] || [ "StableMarking" = "Liveness" ] || [ "StableMarking" = "OneSafe" ] || [ "StableMarking" = "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 [ "StableMarking" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "StableMarking" != "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 "StableMarking.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property StableMarking.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "StableMarking.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 '' StableMarking.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "StableMarking" = "ReachabilityDeadlock" ] || [ "StableMarking" = "QuasiLiveness" ] || [ "StableMarking" = "StableMarking" ] || [ "StableMarking" = "Liveness" ] || [ "StableMarking" = "OneSafe" ] ; then
echo "FORMULA_NAME StableMarking"
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 ;