Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2026-input.r080-tall-177946972500282.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2026-input.qcow2 backing_fmt=qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
..................
=====================================================================
Generated by BenchKit 2-5973
Executing tool gold2025
Input is CopsAndRobbers-PT-CRL005X001, examination is QuasiLiveness
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r080-tall-177946972500282
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 432K
-rw-r--r-- 1 mcc users 9.8K Mar 6 13:33 CTLCardinality.txt
-rw-r--r-- 1 mcc users 89K Mar 6 13:33 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.5K Mar 6 13:32 CTLFireability.txt
-rw-r--r-- 1 mcc users 44K Mar 6 13:32 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.8K Mar 15 08:34 LTLCardinality.txt
-rw-r--r-- 1 mcc users 28K Mar 15 08:34 LTLCardinality.xml
-rw-r--r-- 1 mcc users 3.3K Mar 15 08:34 LTLFireability.txt
-rw-r--r-- 1 mcc users 19K Mar 15 08:34 LTLFireability.xml
-rw-r--r-- 1 mcc users 9.5K Mar 6 13:33 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 72K Mar 6 13:33 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 11K Mar 6 13:33 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 65K Mar 6 13:33 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.9K Mar 15 08:34 UpperBounds.txt
-rw-r--r-- 1 mcc users 4.0K Mar 15 08:34 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 equiv_col
-rw-r--r-- 1 mcc users 11 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 29K Mar 3 18:30 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 1779559237720

Invoking MCC driver with
GOLD_TOOL=
BK_EXAMINATION=QuasiLiveness
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=1800
BK_INPUT=CopsAndRobbers-PT-CRL005X001
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
QuasiLiveness PT
Running Version 202505121319
[2026-05-23 18:00:39] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, QuasiLiveness, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 1800]
[2026-05-23 18:00:39] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-23 18:00:39] [INFO ] Load time of PNML (sax parser for PT used): 40 ms
[2026-05-23 18:00:39] [INFO ] Transformed 35 places.
[2026-05-23 18:00:39] [INFO ] Transformed 39 transitions.
[2026-05-23 18:00:39] [INFO ] Parsed PT model containing 35 places and 39 transitions and 174 arcs in 131 ms.
Starting structural reductions in LIVENESS mode, iteration 0 : 35/35 places, 39/39 transitions.
Reduce places removed 5 places and 0 transitions.
Iterating post reduction 0 with 5 rules applied. Total rules applied 5 place count 30 transition count 39
Performed 2 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 1 with 2 Pre rules applied. Total rules applied 5 place count 30 transition count 37
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 1 with 4 rules applied. Total rules applied 9 place count 28 transition count 37
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 1 with 2 rules applied. Total rules applied 11 place count 27 transition count 36
Applied a total of 11 rules in 24 ms. Remains 27 /35 variables (removed 8) and now considering 36/39 (removed 3) transitions.
// Phase 1: matrix 36 rows 27 cols
[2026-05-23 18:00:39] [INFO ] Computed 8 invariants in 10 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:00:39] [INFO ] Implicit Places using invariants in 191 ms returned []
[2026-05-23 18:00:39] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:00:39] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-23 18:00:39] [INFO ] Implicit Places using invariants and state equation in 107 ms returned [5]
Discarding 1 places :
Implicit Place search using SMT with State Equation took 332 ms to find 1 implicit places.
Starting structural reductions in LIVENESS mode, iteration 1 : 26/35 places, 36/39 transitions.
Applied a total of 0 rules in 1 ms. Remains 26 /26 variables (removed 0) and now considering 36/36 (removed 0) transitions.
Finished structural reductions in LIVENESS mode , in 2 iterations and 372 ms. Remains : 26/35 places, 36/39 transitions.
Discarding 4 transitions out of 36. Remains 32
Initial state reduction rules removed 6 formulas.
[2026-05-23 18:00:40] [INFO ] Flatten gal took : 19 ms
[2026-05-23 18:00:40] [INFO ] Flatten gal took : 8 ms
[2026-05-23 18:00:40] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality5519370769442317771.gal : 4 ms
[2026-05-23 18:00:40] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality11147383652906153611.prop : 1 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality5519370769442317771.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality11147383652906153611.prop' '--nowitness' '--gen-order' 'FOLLOW'
RANDOM walk for 40000 steps (13 resets) in 1104 ms. (36 steps per ms) remains 4/26 properties

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
Loading property file /tmp/ReachabilityCardinality11147383652906153611.prop.
SDD proceeding with computation,26 properties remain. new max is 4
SDD size :1 after 6
Reachability property qltransition_17 is true.
Reachability property qltransition_13 is true.
Reachability property qltransition_9 is true.
Reachability property qltransition_5 is true.
Reachability property qltransition_1 is true.
Reachability property qltransition_0 is true.
SDD proceeding with computation,20 properties remain. new max is 4
SDD size :36 after 38
SDD proceeding with computation,20 properties remain. new max is 8
SDD size :38 after 40
Reachability property qltransition_35 is true.
Reachability property qltransition_31 is true.
Reachability property qltransition_30 is true.
Reachability property qltransition_27 is true.
Reachability property qltransition_26 is true.
Reachability property qltransition_25 is true.
Reachability property qltransition_24 is true.
Reachability property qltransition_23 is true.
Reachability property qltransition_22 is true.
Reachability property qltransition_21 is true.
Reachability property qltransition_14 is true.
SDD proceeding with computation,9 properties remain. new max is 8
SDD size :71 after 82
Reachability property qltransition_34 is true.
Reachability property qltransition_32 is true.
Reachability property qltransition_10 is true.
Reachability property qltransition_6 is true.
SDD proceeding with computation,5 properties remain. new max is 8
SDD size :82 after 92
Reachability property qltransition_33 is true.
Reachability property qltransition_29 is true.
Reachability property qltransition_28 is true.
Reachability property qltransition_18 is true.
Reachability property qltransition_2 is true.
Found states matching all0 target predicate
Will report total states built up to this point. Computation was interrupted after 9 fixpoint passes
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,108,0.021553,4368,2,242,38,1399,6,0,141,766,0
Total reachable state count : 108

Verifying 26 reachability properties.
Reachability property qltransition_0 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_0,30,0.021938,4496,2,94,38,1399,7,0,145,766,0
Reachability property qltransition_1 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_1,1,0.022155,4496,2,27,38,1399,8,0,148,766,0
Reachability property qltransition_2 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_2,1,0.022347,4496,2,27,38,1399,9,0,150,766,0
Reachability property qltransition_5 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_5,1,0.022553,4496,2,27,38,1399,10,0,153,766,0
Reachability property qltransition_6 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_6,1,0.022772,4496,2,27,38,1399,11,0,155,766,0
Reachability property qltransition_9 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_9,1,0.022996,4496,2,27,38,1399,12,0,158,766,0
Reachability property qltransition_10 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_10,1,0.023227,4496,2,27,38,1399,13,0,160,766,0
Reachability property qltransition_13 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_13,1,0.023445,4496,2,27,38,1399,14,0,163,766,0
Reachability property qltransition_14 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_14,1,0.023619,4496,2,27,38,1399,15,0,165,766,0
Reachability property qltransition_17 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_17,1,0.023783,4496,2,27,38,1399,16,0,168,766,0
Reachability property qltransition_18 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_18,1,0.023931,4496,2,27,38,1399,17,0,170,766,0
Reachability property qltransition_21 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_21,1,0.024171,4496,2,27,38,1399,18,0,174,766,0
Reachability property qltransition_22 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_22,1,0.024379,4496,2,27,38,1399,19,0,177,766,0
Reachability property qltransition_23 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_23,1,0.024578,4496,2,27,38,1399,20,0,180,766,0
Reachability property qltransition_24 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_24,3,0.02479,4496,2,37,38,1399,21,0,183,766,0
Reachability property qltransition_25 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_25,4,0.025002,4496,2,43,38,1399,22,0,186,766,0
Reachability property qltransition_26 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_26,1,0.025153,4496,2,27,38,1399,23,0,187,766,0
Reachability property qltransition_27 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_27,2,0.025301,4496,2,30,38,1399,24,0,188,766,0
Reachability property qltransition_28 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_28,1,0.025449,4496,2,27,38,1399,25,0,189,766,0
Reachability property qltransition_29 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_29,3,0.025599,4496,2,37,38,1399,26,0,190,766,0
Reachability property qltransition_30 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_30,1,0.025754,4496,2,27,38,1399,27,0,191,766,0
Reachability property qltransition_31 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_31,3,0.026023,4496,2,38,38,1399,28,0,194,766,0
Reachability property qltransition_32 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_32,1,0.02623,4496,2,27,38,1399,29,0,195,766,0
Reachability property qltransition_33 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_33,1,0.026448,4496,2,27,38,1399,30,0,197,766,0
Reachability property qltransition_34 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_34,1,0.026664,4496,2,27,38,1399,31,0,199,766,0
Reachability property qltransition_35 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_35,2,0.026854,4496,2,33,38,1399,32,0,200,766,0
BEST_FIRST walk for 40000 steps (12 resets) in 590 ms. (67 steps per ms) remains 3/4 properties
BEST_FIRST walk for 40000 steps (10 resets) in 154 ms. (258 steps per ms) remains 2/3 properties
BEST_FIRST walk for 40004 steps (1816 resets) in 129 ms. (307 steps per ms) remains 1/2 properties
BEST_FIRST walk for 23391 steps (6 resets) in 101 ms. (229 steps per ms) remains 0/1 properties
Able to resolve query QuasiLiveness after proving 32 properties.
FORMULA QuasiLiveness TRUE TECHNIQUES RANDOM_WALK DECISION_DIAGRAMS COLLATERAL_PROCESSING BESTFIRST_WALK TOPOLOGICAL INITIAL_STATE
Total runtime 1286 ms.

BK_STOP 1779559240453

--------------------
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
+ [[ QuasiLiveness = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution QuasiLiveness -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 1800
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202505121319.jar
+ VERSION=202505121319
+ echo 'Running Version 202505121319'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination QuasiLiveness -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 1800

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="CopsAndRobbers-PT-CRL005X001"
export BK_EXAMINATION="QuasiLiveness"
export BK_TOOL="gold2025"
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 2-5973"
echo " Executing tool gold2025"
echo " Input is CopsAndRobbers-PT-CRL005X001, 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 r080-tall-177946972500282"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/CopsAndRobbers-PT-CRL005X001.tgz
mv CopsAndRobbers-PT-CRL005X001 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.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 ;