Execution Chart

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

Trace from the execution

Formatting '/mnt/tpsp/fkordon/mcc2023-input.r035-tajo-167813687600014.qcow2', fmt=qcow2 size=4294967296 backing_file='/mnt/tpsp/fkordon/mcc2023-input.qcow2' encryption=off cluster_size=65536 lazy_refcounts=off
Waiting for the VM to be ready (probing ssh)
......................
=====================================================================
Generated by BenchKit 2-5348
Executing tool smart
Input is BridgeAndVehicles-COL-V10P10N10, examination is ReachabilityCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 1
Run identifier is r035-tajo-167813687600014
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 628K
-rw-r--r-- 1 mcc users 9.8K Feb 25 12:04 CTLCardinality.txt
-rw-r--r-- 1 mcc users 98K Feb 25 12:04 CTLCardinality.xml
-rw-r--r-- 1 mcc users 7.8K Feb 25 12:03 CTLFireability.txt
-rw-r--r-- 1 mcc users 64K Feb 25 12:03 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:40 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.4K Jan 29 11:40 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 4.1K Feb 25 15:35 LTLCardinality.txt
-rw-r--r-- 1 mcc users 25K Feb 25 15:35 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.8K Feb 25 15:35 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K Feb 25 15:35 LTLFireability.xml
-rw-r--r-- 1 mcc users 18K Feb 25 12:09 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 172K Feb 25 12:09 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 14K Feb 25 12:08 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 98K Feb 25 12:08 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.9K Feb 25 15:35 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.9K Feb 25 15:35 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 5 18:22 equiv_pt
-rw-r--r-- 1 mcc users 10 Mar 5 18:22 instance
-rw-r--r-- 1 mcc users 5 Mar 5 18:22 iscolored
-rw-r--r-- 1 mcc users 38K 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

here is the order used to build the result vector(from text file)
FORMULA_NAME BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-00
FORMULA_NAME BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-01
FORMULA_NAME BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-02
FORMULA_NAME BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-03
FORMULA_NAME BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-04
FORMULA_NAME BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-05
FORMULA_NAME BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-06
FORMULA_NAME BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-07
FORMULA_NAME BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-08
FORMULA_NAME BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-09
FORMULA_NAME BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-10
FORMULA_NAME BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-11
FORMULA_NAME BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-12
FORMULA_NAME BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-13
FORMULA_NAME BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-14
FORMULA_NAME BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-15

=== Now, execution of the tool begins

BK_START 1678463895122

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=smart
BK_EXAMINATION=ReachabilityCardinality
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=BridgeAndVehicles-COL-V10P10N10
Not applying reductions.
Model is COL
ReachabilityCardinality PT
[2023-03-10 15:58:17] [INFO ] Running its-tools with arguments : [-pnfolder, ., -examination, ReachabilityCardinality, --reduce-single, STATESPACE]
[2023-03-10 15:58:17] [INFO ] Parsing pnml file : /home/mcc/execution/./model.pnml
[2023-03-10 15:58:17] [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.
[2023-03-10 15:58:18] [WARNING] Using fallBack plugin, rng conformance not checked
[2023-03-10 15:58:18] [INFO ] Load time of PNML (colored model parsed with PNMLFW) : 704 ms
[2023-03-10 15:58:18] [INFO ] Imported 15 HL places and 11 HL transitions for a total of 48 PT places and 5438.0 transition bindings in 35 ms.
Parsed 16 properties from file ./ReachabilityCardinality.xml in 79 ms.
[2023-03-10 15:58:18] [INFO ] Unfolded HLPN to a Petri net with 48 places and 288 transitions 2090 arcs in 68 ms.
[2023-03-10 15:58:18] [INFO ] Unfolded 16 HLPN properties in 2 ms.
[2023-03-10 15:58:18] [INFO ] Export to MCC of 16 properties in file ./ReachabilityCardinality.STATESPACE.xml took 9 ms.
[2023-03-10 15:58:18] [INFO ] Export to PNML in file ./model.STATESPACE.pnml of net with 48 places, 288 transitions and 2090 arcs took 9 ms.
Total runtime 1211 ms.
======================================================
========== this is Smart for the MCC'2018 ============
======================================================
Running BridgeAndVehicles (COL), instance V10P10N10
Examination ReachabilityCardinality
Parser /home/mcc/BenchKit/bin//../smart/bin//parser/Cardinality.jar
Model checker /home/mcc/BenchKit/bin//../smart/bin//rem_exec//smart

GOT IT HERE. BS
Petri model created: 48 places, 288 transitions, 2090 arcs.
Final Score: 1197.722
Took : 20 seconds
Reachability Cardinality file is: ReachabilityCardinality.xml
READY TO PARSE. BS
PROPERTY: BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-00 (reachable & potential(( ( 0 ) <= ( 0 ) )))
PROPERTY: BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-01 (reachable &!potential( ( (tk(P28)) <= ( 32 ) )))
PROPERTY: BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-02 (reachable &!potential( ( ( ( ( ( 94 ) <= (tk(P1)) ) | ( ( 1 ) <= (tk(P47) + tk(P48)) ) ) | ( ( (tk(P15)) <= ( 54 ) ) | (! ( (tk(P14)) <= (tk(P1)) )) ) ) | ( ( (! ( (tk(P14)) <= ( 35 ) )) | ( (tk(P14)) <= ( 51 ) ) ) | ( (! ( (tk(P28)) <= (tk(P15)) )) | ( (tk(P34) + tk(P35)) <= ( 1 ) ) ) ) )))
PROPERTY: BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-03 (reachable & potential(( ( ( 41 ) <= (tk(P15)) ) & ( (! ( (tk(P47) + tk(P48)) <= ( 34 ) )) | ( (! ( (tk(P32) + tk(P33)) <= ( 65 ) )) & ( ( (! ( ( 38 ) <= (tk(P30)) )) | ( (! ( (tk(P32) + tk(P33)) <= (tk(P15)) )) & (! ( (tk(P47) + tk(P48)) <= (tk(P1)) )) ) ) & ( ( (! ( (tk(P30)) <= ( 1 ) )) | (! ( ( 61 ) <= (tk(P1)) )) ) | ( ( (! ( (tk(P13)) <= (tk(P34) + tk(P35)) )) & (! ( (tk(P34) + tk(P35)) <= ( 87 ) )) ) | ( ( (! ( ( 2 ) <= (tk(P28)) )) & (! ( ( 74 ) <= (tk(P31)) )) ) | ( (! ( (tk(P1)) <= ( 24 ) )) & ( ( (tk(P30)) <= ( 89 ) ) & ( ( 90 ) <= (tk(P14)) ) ) ) ) ) ) ) ) ) )))
PROPERTY: BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-04 (reachable &!potential( ( ( (tk(P30)) <= ( 94 ) ) | ( ( ( 51 ) <= (tk(P31)) ) | ( ( (tk(P28)) <= ( 49 ) ) & ( ( (tk(P1)) <= ( 17 ) ) | ( ( ( (tk(P32) + tk(P33)) <= ( 96 ) ) & ( (! ( (tk(P28)) <= (tk(P1)) )) & ( ( 5 ) <= (tk(P16)) ) ) ) | ( ( (tk(P31)) <= ( 1 ) ) & ( ( 1 ) <= (tk(P34) + tk(P35)) ) ) ) ) ) ) )))
PROPERTY: BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-05 (reachable & potential(( ( ( ( 23 ) <= (tk(P13)) ) & ( ( ( 67 ) <= (tk(P34) + tk(P35)) ) | ( ( 1 ) <= (tk(P47) + tk(P48)) ) ) ) | ( ( ( ( 60 ) <= (tk(P30)) ) & ( ( ( 60 ) <= (tk(P14)) ) | ( (! ( ( 36 ) <= (tk(P30)) )) | ( ( 91 ) <= (tk(P30)) ) ) ) ) | ( ( ( 79 ) <= (tk(P32) + tk(P33)) ) & ( ( ( (tk(P15)) <= ( 44 ) ) | ( (tk(P16)) <= (tk(P13)) ) ) & ( ( (! ( ( 1 ) <= (tk(P30)) )) & (! ( ( 41 ) <= (tk(P47) + tk(P48)) )) ) | ( ( (! ( (tk(P14)) <= ( 19 ) )) & (! ( (tk(P15)) <= (tk(P13)) )) ) | ( ( ( 85 ) <= (tk(P31)) ) & ( ( 1 ) <= (tk(P32) + tk(P33)) ) ) ) ) ) ) ) )))
PROPERTY: BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-06 (reachable &!potential( ( ( ( (tk(P34) + tk(P35)) <= ( 71 ) ) | ( ( ( 62 ) <= (tk(P31)) ) | (! ( (tk(P29)) <= ( 46 ) )) ) ) | ( ( ( 66 ) <= (tk(P34) + tk(P35)) ) | ( ( (tk(P47) + tk(P48)) <= ( 25 ) ) | ( ( ( (! ( (tk(P30)) <= ( 75 ) )) | ( (! ( (tk(P29)) <= (tk(P16)) )) & ( (! ( ( 1 ) <= (tk(P16)) )) & ( (tk(P32) + tk(P33)) <= (tk(P1)) ) ) ) ) & ( ( (tk(P13)) <= ( 74 ) ) | ( ( ( (tk(P16)) <= (tk(P1)) ) & ( ( (tk(P16)) <= ( 84 ) ) & ( ( ( 79 ) <= (tk(P29)) ) | ( (tk(P29)) <= ( 61 ) ) ) ) ) | ( ( ( 69 ) <= (tk(P13)) ) & ( (! ( ( 20 ) <= (tk(P31)) )) | ( (! ( (tk(P34) + tk(P35)) <= (tk(P16)) )) & ( ( (tk(P47) + tk(P48)) <= ( 1 ) ) & ( ( 27 ) <= (tk(P31)) ) ) ) ) ) ) ) ) & ( ( ( 90 ) <= (tk(P16)) ) & ( ( (tk(P29)) <= (tk(P47) + tk(P48)) ) & ( (tk(P30)) <= (tk(P32) + tk(P33)) ) ) ) ) ) ) )))
PROPERTY: BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-07 (reachable & potential(( ( (tk(P31)) <= ( 25 ) ) & ( ( ( ( (! ( ( 4 ) <= (tk(P34) + tk(P35)) )) & ( (! ( (tk(P14)) <= (tk(P29)) )) & (! ( (tk(P14)) <= ( 25 ) )) ) ) & ( (! ( ( 29 ) <= (tk(P32) + tk(P33)) )) & ( ( (! ( (tk(P14)) <= (tk(P32) + tk(P33)) )) | ( ( ( 86 ) <= (tk(P32) + tk(P33)) ) & ( (! ( ( 78 ) <= (tk(P29)) )) & (! ( ( 1 ) <= (tk(P14)) )) ) ) ) & ( (! ( (tk(P32) + tk(P33)) <= ( 1 ) )) | (! ( ( 11 ) <= (tk(P47) + tk(P48)) )) ) ) ) ) | ( (! ( (tk(P32) + tk(P33)) <= (tk(P1)) )) & ( ( (! ( (tk(P31)) <= ( 60 ) )) | ( (! ( (tk(P13)) <= (tk(P16)) )) & ( (! ( ( 78 ) <= (tk(P32) + tk(P33)) )) | (! ( (tk(P32) + tk(P33)) <= (tk(P28)) )) ) ) ) & ( (! ( ( 84 ) <= (tk(P47) + tk(P48)) )) | ( ( (tk(P31)) <= ( 16 ) ) | ( (! ( (tk(P16)) <= ( 32 ) )) & ( (! ( (tk(P15)) <= ( 61 ) )) & (! ( (tk(P31)) <= ( 24 ) )) ) ) ) ) ) ) ) & ( (! ( ( 55 ) <= (tk(P13)) )) | ( ( (! ( ( 88 ) <= (tk(P16)) )) | ( ( (tk(P31)) <= ( 1 ) ) | ( ( ( 38 ) <= (tk(P29)) ) & (! ( ( 2 ) <= (tk(P32) + tk(P33)) )) ) ) ) & ( ( (tk(P47) + tk(P48)) <= (tk(P28)) ) | ( (! ( (tk(P28)) <= ( 42 ) )) | ( (! ( (tk(P13)) <= ( 10 ) )) & (! ( (tk(P1)) <= ( 1 ) )) ) ) ) ) ) ) )))
PROPERTY: BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-08 (reachable & potential(( ( 0 ) <= ( 0 ) )))
PROPERTY: BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-09 (reachable &!potential( ( ( (tk(P29)) <= ( 66 ) ) | ( ( 52 ) <= (tk(P47) + tk(P48)) ) )))
PROPERTY: BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-10 (reachable &!potential( ( ( 1 ) <= ( 0 ) )))
PROPERTY: BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-11 (reachable &!potential( ( ( 1 ) <= ( 0 ) )))
PROPERTY: BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-12 (reachable & potential(( (! ( (tk(P13)) <= ( 85 ) )) | ( ( 30 ) <= (tk(P15)) ) )))
PROPERTY: BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-13 (reachable &!potential( ( (! ( ( 20 ) <= (tk(P15)) )) & ( ( (tk(P28)) <= ( 48 ) ) | (! ( (tk(P32) + tk(P33)) <= ( 21 ) )) ) )))
PROPERTY: BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-14 (reachable &!potential( ( (tk(P34) + tk(P35)) <= ( 1 ) )))
PROPERTY: BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-15 (reachable & potential(( (! ( ( 1 ) <= (tk(P34) + tk(P35)) )) & ( ( 24 ) <= (tk(P47) + tk(P48)) ) )))
FORMULA BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-00 TRUE TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS
FORMULA BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-01 TRUE TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS
FORMULA BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-02 TRUE TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS
FORMULA BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-03 FALSE TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS
FORMULA BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-04 TRUE TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS
FORMULA BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-05 FALSE TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS
FORMULA BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-06 TRUE TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS
FORMULA BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-07 FALSE TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS
FORMULA BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-08 TRUE TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS
FORMULA BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-09 TRUE TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS
FORMULA BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-10 FALSE TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS
FORMULA BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-11 FALSE TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS
FORMULA BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-12 FALSE TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS
FORMULA BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-13 TRUE TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS
FORMULA BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-14 TRUE TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS
FORMULA BridgeAndVehicles-COL-V10P10N10-ReachabilityCardinality-15 FALSE TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS

BK_STOP 1678463926040

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

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="BridgeAndVehicles-COL-V10P10N10"
export BK_EXAMINATION="ReachabilityCardinality"
export BK_TOOL="smart"
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 smart"
echo " Input is BridgeAndVehicles-COL-V10P10N10, examination is ReachabilityCardinality"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 1"
echo " Run identifier is r035-tajo-167813687600014"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/BridgeAndVehicles-COL-V10P10N10.tgz
mv BridgeAndVehicles-COL-V10P10N10 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 ;