fond
Model Checking Contest 2023
13th edition, Paris, France, April 26, 2023 (at TOOLympics II)
Execution of r096-smll-167814411400252
Last Updated
May 14, 2023

About the Execution of 2022-gold for CloudDeployment-PT-4b

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
2441.292 56990.00 79613.00 323.10 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.r096-smll-167814411400252.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)
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=====================================================================
Generated by BenchKit 2-5348
Executing tool gold2022
Input is CloudDeployment-PT-4b, examination is QuasiLiveness
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r096-smll-167814411400252
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 956K
-rw-r--r-- 1 mcc users 6.7K Feb 25 14:51 CTLCardinality.txt
-rw-r--r-- 1 mcc users 71K Feb 25 14:51 CTLCardinality.xml
-rw-r--r-- 1 mcc users 4.4K Feb 25 14:50 CTLFireability.txt
-rw-r--r-- 1 mcc users 33K Feb 25 14:50 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 15:45 LTLCardinality.txt
-rw-r--r-- 1 mcc users 27K Feb 25 15:45 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K Feb 25 15:45 LTLFireability.txt
-rw-r--r-- 1 mcc users 16K Feb 25 15:45 LTLFireability.xml
-rw-r--r-- 1 mcc users 9.4K Feb 25 14:52 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 96K Feb 25 14:52 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 5.7K Feb 25 14:51 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 41K Feb 25 14:51 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Feb 25 15:45 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Feb 25 15:45 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 equiv_col
-rw-r--r-- 1 mcc users 3 Mar 5 18:22 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 iscolored
-rw-r--r-- 1 mcc users 591K 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 1678177655042

Running Version 202205111006
[2023-03-07 08:27:37] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, QuasiLiveness, -spotpath, /home/mcc/BenchKit/bin//..//ltlfilt, -z3path, /home/mcc/BenchKit/bin//..//z3/bin/z3, -yices2path, /home/mcc/BenchKit/bin//..//yices/bin/yices, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 1800]
[2023-03-07 08:27:37] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-07 08:27:38] [INFO ] Load time of PNML (sax parser for PT used): 483 ms
[2023-03-07 08:27:38] [INFO ] Transformed 1182 places.
[2023-03-07 08:27:38] [INFO ] Transformed 1824 transitions.
[2023-03-07 08:27:38] [INFO ] Found NUPN structural information;
[2023-03-07 08:27:38] [INFO ] Parsed PT model containing 1182 places and 1824 transitions in 763 ms.
Starting structural reductions in LIVENESS mode, iteration 0 : 1182/1182 places, 1824/1824 transitions.
Graph (trivial) has 1202 edges and 1182 vertex of which 336 / 1182 are part of one of the 32 SCC in 17 ms
Free SCC test removed 304 places
Ensure Unique test removed 340 transitions
Reduce isomorphic transitions removed 340 transitions.
Ensure Unique test removed 1 places
Reduce places removed 5 places and 0 transitions.
Drop transitions removed 432 transitions
Trivial Post-agglo rules discarded 432 transitions
Performed 432 trivial Post agglomeration. Transition count delta: 432
Iterating post reduction 0 with 437 rules applied. Total rules applied 438 place count 873 transition count 1052
Reduce places removed 432 places and 0 transitions.
Iterating post reduction 1 with 432 rules applied. Total rules applied 870 place count 441 transition count 1052
Performed 16 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 16 Pre rules applied. Total rules applied 870 place count 441 transition count 1036
Deduced a syphon composed of 16 places in 13 ms
Reduce places removed 16 places and 0 transitions.
Iterating global reduction 2 with 32 rules applied. Total rules applied 902 place count 425 transition count 1036
Discarding 163 places :
Symmetric choice reduction at 2 with 163 rule applications. Total rules 1065 place count 262 transition count 873
Iterating global reduction 2 with 163 rules applied. Total rules applied 1228 place count 262 transition count 873
Ensure Unique test removed 12 transitions
Reduce isomorphic transitions removed 12 transitions.
Iterating post reduction 2 with 12 rules applied. Total rules applied 1240 place count 262 transition count 861
Performed 4 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 4 Pre rules applied. Total rules applied 1240 place count 262 transition count 857
Deduced a syphon composed of 4 places in 3 ms
Reduce places removed 4 places and 0 transitions.
Iterating global reduction 3 with 8 rules applied. Total rules applied 1248 place count 258 transition count 857
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 1250 place count 256 transition count 855
Iterating global reduction 3 with 2 rules applied. Total rules applied 1252 place count 256 transition count 855
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 1253 place count 255 transition count 854
Iterating global reduction 3 with 1 rules applied. Total rules applied 1254 place count 255 transition count 854
Performed 73 Post agglomeration using F-continuation condition.Transition count delta: 73
Deduced a syphon composed of 73 places in 2 ms
Reduce places removed 73 places and 0 transitions.
Iterating global reduction 3 with 146 rules applied. Total rules applied 1400 place count 182 transition count 781
Performed 24 Post agglomeration using F-continuation condition with reduction of 56 identical transitions.
Deduced a syphon composed of 24 places in 1 ms
Reduce places removed 24 places and 0 transitions.
Iterating global reduction 3 with 48 rules applied. Total rules applied 1448 place count 158 transition count 873
Applied a total of 1448 rules in 371 ms. Remains 158 /1182 variables (removed 1024) and now considering 873/1824 (removed 951) transitions.
[2023-03-07 08:27:39] [INFO ] Flow matrix only has 742 transitions (discarded 131 similar events)
// Phase 1: matrix 742 rows 158 cols
[2023-03-07 08:27:39] [INFO ] Computed 12 place invariants in 55 ms
[2023-03-07 08:27:40] [INFO ] Implicit Places using invariants in 1100 ms returned []
[2023-03-07 08:27:40] [INFO ] Flow matrix only has 742 transitions (discarded 131 similar events)
// Phase 1: matrix 742 rows 158 cols
[2023-03-07 08:27:40] [INFO ] Computed 12 place invariants in 13 ms
[2023-03-07 08:27:40] [INFO ] State equation strengthened by 205 read => feed constraints.
[2023-03-07 08:27:42] [INFO ] Implicit Places using invariants and state equation in 1917 ms returned []
Implicit Place search using SMT with State Equation took 3090 ms to find 0 implicit places.
[2023-03-07 08:27:42] [INFO ] Flow matrix only has 742 transitions (discarded 131 similar events)
// Phase 1: matrix 742 rows 158 cols
[2023-03-07 08:27:42] [INFO ] Computed 12 place invariants in 15 ms
[2023-03-07 08:27:43] [INFO ] Dead Transitions using invariants and state equation in 1119 ms found 0 transitions.
Starting structural reductions in LIVENESS mode, iteration 1 : 158/1182 places, 873/1824 transitions.
Finished structural reductions, in 1 iterations. Remains : 158/1182 places, 873/1824 transitions.
Discarding 443 transitions out of 873. Remains 430
Initial state reduction rules removed 1 formulas.
Incomplete random walk after 10000 steps, including 430 resets, run finished after 1377 ms. (steps per millisecond=7 ) properties (out of 429) seen :76
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 3 ms. (steps per millisecond=33 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 3 ms. (steps per millisecond=33 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 3 ms. (steps per millisecond=33 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 3 ms. (steps per millisecond=33 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 3 ms. (steps per millisecond=33 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 3 ms. (steps per millisecond=33 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 3 ms. (steps per millisecond=33 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 353) seen :0
Running SMT prover for 353 properties.
[2023-03-07 08:27:45] [INFO ] Flow matrix only has 742 transitions (discarded 131 similar events)
// Phase 1: matrix 742 rows 158 cols
[2023-03-07 08:27:45] [INFO ] Computed 12 place invariants in 11 ms
[2023-03-07 08:27:50] [INFO ] [Real]Absence check using 0 positive and 12 generalized place invariants in 7 ms returned sat
[2023-03-07 08:28:06] [INFO ] After 13222ms SMT Verify possible using state equation in real domain returned unsat :255 sat :7 real:91
[2023-03-07 08:28:06] [INFO ] State equation strengthened by 205 read => feed constraints.
[2023-03-07 08:28:06] [INFO ] After 447ms SMT Verify possible using 205 Read/Feed constraints in real domain returned unsat :255 sat :0 real:98
[2023-03-07 08:28:06] [INFO ] After 18269ms SMT Verify possible using all constraints in real domain returned unsat :255 sat :0 real:98
[2023-03-07 08:28:07] [INFO ] [Nat]Absence check using 0 positive and 12 generalized place invariants in 7 ms returned sat
[2023-03-07 08:28:13] [INFO ] After 5176ms SMT Verify possible using state equation in natural domain returned unsat :255 sat :98
[2023-03-07 08:28:19] [INFO ] After 6438ms SMT Verify possible using 205 Read/Feed constraints in natural domain returned unsat :255 sat :98
[2023-03-07 08:28:29] [INFO ] After 16117ms SMT Verify possible using trap constraints in natural domain returned unsat :255 sat :98
Attempting to minimize the solution found.
Minimization took 2338 ms.
[2023-03-07 08:28:31] [INFO ] After 25022ms SMT Verify possible using all constraints in natural domain returned unsat :255 sat :98
FORMULA QuasiLiveness FALSE TECHNIQUES RANDOM_WALK STRUCTURAL_REDUCTION TOPOLOGICAL INITIAL_STATE SAT_SMT
Total runtime 54209 ms.

BK_STOP 1678177712032

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

+ export LANG=C
+ LANG=C
+ export BINDIR=/home/mcc/BenchKit/bin//../
+ BINDIR=/home/mcc/BenchKit/bin//../
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ QuasiLiveness = StateSpace ]]
+ /home/mcc/BenchKit/bin//..//runeclipse.sh /home/mcc/execution QuasiLiveness -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//..//greatspn/ -order META -manyOrder -smt -timeout 1800
+ ulimit -s 65536
+ export PYTHONPATH=/usr/lib/python3.9/site-packages/
+ PYTHONPATH=/usr/lib/python3.9/site-packages/
+ export LD_LIBRARY_PATH=/usr/local/lib:
+ LD_LIBRARY_PATH=/usr/local/lib:
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202205111006.jar
+ VERSION=202205111006
+ echo 'Running Version 202205111006'
+ /home/mcc/BenchKit/bin//..//itstools/its-tools -data @none -pnfolder /home/mcc/execution -examination QuasiLiveness -spotpath /home/mcc/BenchKit/bin//..//ltlfilt -z3path /home/mcc/BenchKit/bin//..//z3/bin/z3 -yices2path /home/mcc/BenchKit/bin//..//yices/bin/yices -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//..//greatspn/ -order META -manyOrder -smt -timeout 1800 -vmargs -Dosgi.locking=none -Declipse.stateSaveDelayInterval=-1 -Dosgi.configuration.area=@none -Xss128m -Xms40m -Xmx8192m

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="CloudDeployment-PT-4b"
export BK_EXAMINATION="QuasiLiveness"
export BK_TOOL="gold2022"
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 gold2022"
echo " Input is CloudDeployment-PT-4b, 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 r096-smll-167814411400252"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/CloudDeployment-PT-4b.tgz
mv CloudDeployment-PT-4b 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 ;