fond
Model Checking Contest 2024
14th edition, Geneva, Switzerland, June 25, 2024
Execution of r335-tall-171679082200454
Last Updated
July 7, 2024

About the Execution of LoLA for SatelliteMemory-PT-X00100Y0003

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
356.800 1111.00 1173.00 7.50 FFFTFTFFTFFTFTFF normal

Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2024-input.r335-tall-171679082200454.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2024-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 2-5568
Executing tool lola
Input is SatelliteMemory-PT-X00100Y0003, examination is ReachabilityCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r335-tall-171679082200454
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 480K
-rw-r--r-- 1 mcc users 6.2K May 14 13:22 CTLCardinality.txt
-rw-r--r-- 1 mcc users 64K May 14 13:22 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.5K May 14 13:22 CTLFireability.txt
-rw-r--r-- 1 mcc users 50K May 14 13:22 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 18 16:43 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 7.2K May 18 16:43 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.7K Apr 23 07:50 LTLCardinality.txt
-rw-r--r-- 1 mcc users 25K Apr 23 07:50 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K Apr 23 07:50 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Apr 23 07:50 LTLFireability.xml
-rw-r--r-- 1 mcc users 13K Apr 13 08:21 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 135K Apr 13 08:21 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 9.2K Apr 13 08:19 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 84K Apr 13 08:19 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K Apr 23 07:50 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Apr 23 07:50 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 18 16:43 equiv_col
-rw-r--r-- 1 mcc users 12 May 18 16:43 instance
-rw-r--r-- 1 mcc users 6 May 18 16:43 iscolored
-rwxr-xr-x 1 mcc users 5.5K May 18 16:43 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 SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-00
FORMULA_NAME SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-01
FORMULA_NAME SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-02
FORMULA_NAME SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-03
FORMULA_NAME SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-04
FORMULA_NAME SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-05
FORMULA_NAME SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-06
FORMULA_NAME SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-07
FORMULA_NAME SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-08
FORMULA_NAME SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-09
FORMULA_NAME SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-10
FORMULA_NAME SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-11
FORMULA_NAME SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-12
FORMULA_NAME SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-13
FORMULA_NAME SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-14
FORMULA_NAME SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-15

=== Now, execution of the tool begins

BK_START 1717108584091

FORMULA SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-01 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-02 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-05 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-11 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-12 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-06 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-09 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-13 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-15 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-08 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-10 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-00 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-04 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-14 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-03 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-07 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
[lola] FINAL RESULTS
[lola]  FINISHED FORMULA: CATEGORY VALUE PRODUCED BY
[lola] SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-00: AG false findpath
[lola] SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-01: INITIAL false preprocessing
[lola] SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-02: INITIAL false preprocessing
[lola] SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-03: EF true findpath
[lola] SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-04: AG false findpath
[lola] SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-05: INITIAL true preprocessing
[lola] SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-06: INITIAL false preprocessing
[lola] SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-07: EF false state equation
[lola] SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-08: INITIAL true preprocessing
[lola] SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-09: INITIAL false preprocessing
[lola] SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-10: AG false findpath
[lola] SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-11: INITIAL true preprocessing
[lola] SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-12: INITIAL false preprocessing
[lola] SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-13: INITIAL true preprocessing
[lola] SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-14: AG false findpath
[lola] SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-15: INITIAL false preprocessing
[lola]
[lola] Time elapsed: 1 secs. Pages in use: 1

BK_STOP 1717108585202

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

[lola][I] LoLA will run for 3600 seconds at most (--timelimit)
[lola][W] unknown unit in memory specification: using default
[lola][I] MEM LIMIT 5
[lola][I] NET
[lola][I] reading net from model.pnml
[lola][I] input: PNML file (--pnmlnet)
[lola][I] reading pnml
[lola][I] PNML file contains place/transition net
[lola][I] closed net file model.pnml
[lola][I] finished parsing
[lola][I] Reading formula.
[lola][I] Using XML format (--xmlformula)
[lola][I] reading XML formula
[lola][I] reading formula from ReachabilityCardinality.xml
[lola][I] LAUNCH task # 4 (type CNST) for 3 SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-01
[lola][I] time limit : 0 sec
[lola][I] memory limit: 0 pages
[lola][I] LAUNCH task # 7 (type CNST) for 6 SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-02
[lola][I] time limit : 0 sec
[lola][I] memory limit: 0 pages
[lola][I] Rule S: 0 transitions removed,0 places removed
[lola][I] FINISHED task # 7 (type CNST) for SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-02
[lola][I] result : false
[lola][I] FINISHED task # 4 (type CNST) for SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-01
[lola][I] result : false
[lola][I] LAUNCH task # 16 (type CNST) for 15 SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-05
[lola][I] time limit : 0 sec
[lola][I] memory limit: 0 pages
[lola][I] FINISHED task # 16 (type CNST) for SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-05
[lola][I] result : true
[lola][I] LAUNCH task # 34 (type CNST) for 33 SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-11
[lola][I] time limit : 0 sec
[lola][I] memory limit: 0 pages
[lola][I] LAUNCH task # 37 (type CNST) for 36 SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-12
[lola][I] time limit : 0 sec
[lola][I] memory limit: 0 pages
[lola][I] FINISHED task # 34 (type CNST) for SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-11
[lola][I] result : true
[lola][I] FINISHED task # 37 (type CNST) for SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-12
[lola][I] result : false
[lola][I] LAUNCH task # 28 (type CNST) for 27 SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-09
[lola][I] time limit : 0 sec
[lola][I] memory limit: 0 pages
[lola][I] LAUNCH task # 19 (type CNST) for 18 SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-06
[lola][I] time limit : 0 sec
[lola][I] memory limit: 0 pages
[lola][I] LAUNCH task # 40 (type CNST) for 39 SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-13
[lola][I] time limit : 0 sec
[lola][I] memory limit: 0 pages
[lola][I] FINISHED task # 40 (type CNST) for SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-13
[lola][I] result : true
[lola][I] FINISHED task # 28 (type CNST) for SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-09
[lola][I] result : false
[lola][I] FINISHED task # 19 (type CNST) for SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-06
[lola][I] result : false
[lola][I] LAUNCH task # 25 (type CNST) for 24 SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-08
[lola][I] time limit : 0 sec
[lola][I] memory limit: 0 pages
[lola][I] LAUNCH task # 46 (type CNST) for 45 SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-15
[lola][I] time limit : 0 sec
[lola][I] memory limit: 0 pages
[lola][I] LAUNCH task # 50 (type EXCL) for 21 SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-07
[lola][I] time limit : 449 sec
[lola][I] memory limit: 2000 pages
[lola][I] LAUNCH task # 48 (type FNDP) for 21 SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-07
[lola][I] time limit : 32000000 sec
[lola][I] memory limit: 5 pages
[lola][I] FINISHED task # 46 (type CNST) for SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-15
[lola][I] result : false
[lola][I] LAUNCH task # 49 (type EQUN) for 21 SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-07
[lola][I] time limit : 32000000 sec
[lola][I] memory limit: 5 pages
[lola][I] FINISHED task # 25 (type CNST) for SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-08
[lola][I] result : true
[lola][I] LAUNCH task # 58 (type FNDP) for 30 SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-10
[lola][I] time limit : 32000000 sec
[lola][I] memory limit: 5 pages
[lola][I] FINISHED task # 58 (type FNDP) for SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-10
[lola][I] result : true
[lola][I] tried executions : 1
[lola][I] time used : 0
[lola][I] memory pages used : 0
[lola][I] LAUNCH task # 61 (type FNDP) for 0 SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-00
[lola][I] time limit : 32000000 sec
[lola][I] memory limit: 5 pages
[lola][I] FINISHED task # 61 (type FNDP) for SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-00
[lola][I] result : true
[lola][I] tried executions : 1
[lola][I] time used : 0
[lola][I] memory pages used : 0
[lola][I] LAUNCH task # 59 (type FNDP) for 12 SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-04
[lola][I] time limit : 32000000 sec
[lola][I] memory limit: 5 pages
[lola][I] FINISHED task # 59 (type FNDP) for SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-04
[lola][I] result : true
[lola][I] tried executions : 1
[lola][I] time used : 0
[lola][I] memory pages used : 0
[lola][I] LAUNCH task # 60 (type FNDP) for 42 SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-14
[lola][I] time limit : 32000000 sec
[lola][I] memory limit: 5 pages
[lola][I] FINISHED task # 60 (type FNDP) for SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-14
[lola][I] result : true
[lola][I] tried executions : 1
[lola][I] time used : 0
[lola][I] memory pages used : 0
[lola][I] LAUNCH task # 54 (type FNDP) for 9 SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-03
[lola][I] time limit : 32000000 sec
[lola][I] memory limit: 5 pages
[lola][I] FINISHED task # 54 (type FNDP) for SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-03
[lola][I] result : true
[lola][I] tried executions : 1
[lola][I] time used : 0
[lola][I] memory pages used : 0
[lola][I] FINISHED task # 49 (type EQUN) for SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-07
[lola][I] result : false
[lola][W] CANCELED task # 48 (type FNDP) for SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-07 (obsolete)
[lola][W] CANCELED task # 50 (type EXCL) for SatelliteMemory-PT-X00100Y0003-ReachabilityCardinality-2024-07 (obsolete)
[lola][I] Portfolio finished: no open formulas

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="SatelliteMemory-PT-X00100Y0003"
export BK_EXAMINATION="ReachabilityCardinality"
export BK_TOOL="lola"
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 2-5568"
echo " Executing tool lola"
echo " Input is SatelliteMemory-PT-X00100Y0003, examination is ReachabilityCardinality"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r335-tall-171679082200454"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/SatelliteMemory-PT-X00100Y0003.tgz
mv SatelliteMemory-PT-X00100Y0003 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 ;