fond
Model Checking Contest 2024
14th edition, Geneva, Switzerland, June 25, 2024
Execution of r137-tall-171631133600148
Last Updated
July 7, 2024

About the Execution of LoLA for Diffusion2D-PT-D05N100

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
84.888 189.00 120.00 0.00 FFTFFFFFFFFTFFFF 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.r137-tall-171631133600148.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 Diffusion2D-PT-D05N100, examination is LTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r137-tall-171631133600148
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 604K
-rw-r--r-- 1 mcc users 9.3K May 14 13:22 CTLCardinality.txt
-rw-r--r-- 1 mcc users 91K May 14 13:22 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.2K May 14 13:22 CTLFireability.txt
-rw-r--r-- 1 mcc users 52K May 14 13:22 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 18 16:42 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.3K May 18 16:42 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 4.1K Apr 22 14:40 LTLCardinality.txt
-rw-r--r-- 1 mcc users 25K Apr 22 14:40 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.5K Apr 22 14:40 LTLFireability.txt
-rw-r--r-- 1 mcc users 16K Apr 22 14:40 LTLFireability.xml
-rw-r--r-- 1 mcc users 16K Apr 11 14:19 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 146K Apr 11 14:19 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 14K Apr 11 14:19 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 110K Apr 11 14:19 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K Apr 22 14:40 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Apr 22 14:40 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 18 16:42 equiv_col
-rw-r--r-- 1 mcc users 8 May 18 16:42 instance
-rw-r--r-- 1 mcc users 6 May 18 16:42 iscolored
-rw-r--r-- 1 mcc users 55K May 18 16:42 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 Diffusion2D-PT-D05N100-LTLFireability-00
FORMULA_NAME Diffusion2D-PT-D05N100-LTLFireability-01
FORMULA_NAME Diffusion2D-PT-D05N100-LTLFireability-02
FORMULA_NAME Diffusion2D-PT-D05N100-LTLFireability-03
FORMULA_NAME Diffusion2D-PT-D05N100-LTLFireability-04
FORMULA_NAME Diffusion2D-PT-D05N100-LTLFireability-05
FORMULA_NAME Diffusion2D-PT-D05N100-LTLFireability-06
FORMULA_NAME Diffusion2D-PT-D05N100-LTLFireability-07
FORMULA_NAME Diffusion2D-PT-D05N100-LTLFireability-08
FORMULA_NAME Diffusion2D-PT-D05N100-LTLFireability-09
FORMULA_NAME Diffusion2D-PT-D05N100-LTLFireability-10
FORMULA_NAME Diffusion2D-PT-D05N100-LTLFireability-11
FORMULA_NAME Diffusion2D-PT-D05N100-LTLFireability-12
FORMULA_NAME Diffusion2D-PT-D05N100-LTLFireability-13
FORMULA_NAME Diffusion2D-PT-D05N100-LTLFireability-14
FORMULA_NAME Diffusion2D-PT-D05N100-LTLFireability-15

=== Now, execution of the tool begins

BK_START 1717013971308

FORMULA Diffusion2D-PT-D05N100-LTLFireability-04 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA Diffusion2D-PT-D05N100-LTLFireability-10 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA Diffusion2D-PT-D05N100-LTLFireability-08 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA Diffusion2D-PT-D05N100-LTLFireability-06 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA Diffusion2D-PT-D05N100-LTLFireability-12 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA Diffusion2D-PT-D05N100-LTLFireability-11 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA Diffusion2D-PT-D05N100-LTLFireability-14 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA Diffusion2D-PT-D05N100-LTLFireability-03 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA Diffusion2D-PT-D05N100-LTLFireability-15 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA Diffusion2D-PT-D05N100-LTLFireability-02 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA Diffusion2D-PT-D05N100-LTLFireability-09 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA Diffusion2D-PT-D05N100-LTLFireability-01 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA Diffusion2D-PT-D05N100-LTLFireability-00 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA Diffusion2D-PT-D05N100-LTLFireability-05 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA Diffusion2D-PT-D05N100-LTLFireability-07 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA Diffusion2D-PT-D05N100-LTLFireability-13 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] Diffusion2D-PT-D05N100-LTLFireability-00: LTL false LTL model checker
[lola] Diffusion2D-PT-D05N100-LTLFireability-01: LTL false LTL model checker
[lola] Diffusion2D-PT-D05N100-LTLFireability-02: LTL true LTL model checker
[lola] Diffusion2D-PT-D05N100-LTLFireability-03: CONJ false LTL model checker
[lola] Diffusion2D-PT-D05N100-LTLFireability-04: CONJ false preprocessing
[lola] Diffusion2D-PT-D05N100-LTLFireability-05: AG false findpath
[lola] Diffusion2D-PT-D05N100-LTLFireability-06: LTL false LTL model checker
[lola] Diffusion2D-PT-D05N100-LTLFireability-07: LTL false LTL model checker
[lola] Diffusion2D-PT-D05N100-LTLFireability-08: LTL false LTL model checker
[lola] Diffusion2D-PT-D05N100-LTLFireability-09: CONJ false state equation
[lola] Diffusion2D-PT-D05N100-LTLFireability-10: CONJ false preprocessing
[lola] Diffusion2D-PT-D05N100-LTLFireability-11: LTL true LTL model checker
[lola] Diffusion2D-PT-D05N100-LTLFireability-12: LTL false LTL model checker
[lola] Diffusion2D-PT-D05N100-LTLFireability-13: LTL false LTL model checker
[lola] Diffusion2D-PT-D05N100-LTLFireability-14: LTL false LTL model checker
[lola] Diffusion2D-PT-D05N100-LTLFireability-15: LTL false LTL model checker
[lola]
[lola] Time elapsed: 0 secs. Pages in use: 1

BK_STOP 1717013971497

--------------------
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 LTLFireability.xml
[lola][I] Rule S: 0 transitions removed,0 places removed
[lola][I] LAUNCH task # 19 (type CNST) for 16 Diffusion2D-PT-D05N100-LTLFireability-04
[lola][I] time limit : 0 sec
[lola][I] memory limit: 0 pages
[lola][I] FINISHED task # 19 (type CNST) for Diffusion2D-PT-D05N100-LTLFireability-04
[lola][I] result : false
[lola][I] LAUNCH task # 45 (type CNST) for 42 Diffusion2D-PT-D05N100-LTLFireability-10
[lola][I] time limit : 0 sec
[lola][I] memory limit: 0 pages
[lola][I] FINISHED task # 45 (type CNST) for Diffusion2D-PT-D05N100-LTLFireability-10
[lola][I] result : false
[*** LOG ERROR #0001 ***] [2024-05-29 20:19:31] [status_logger] string pointer is null
[lola][I] LAUNCH task # 33 (type EXCL) for 32 Diffusion2D-PT-D05N100-LTLFireability-08
[lola][I] time limit : 200 sec
[lola][I] memory limit: 2000 pages
[lola][I] FINISHED task # 33 (type EXCL) for Diffusion2D-PT-D05N100-LTLFireability-08
[lola][I] result : false
[lola][I] markings : 208
[lola][I] fired transitions : 208
[lola][I] time used : 0
[lola][I] memory pages used : 1
[lola][I] LAUNCH task # 27 (type EXCL) for 26 Diffusion2D-PT-D05N100-LTLFireability-06
[lola][I] time limit : 211 sec
[lola][I] memory limit: 2000 pages
[lola][I] FINISHED task # 27 (type EXCL) for Diffusion2D-PT-D05N100-LTLFireability-06
[lola][I] result : false
[lola][I] markings : 208
[lola][I] fired transitions : 208
[lola][I] time used : 0
[lola][I] memory pages used : 1
[lola][I] LAUNCH task # 53 (type EXCL) for 52 Diffusion2D-PT-D05N100-LTLFireability-12
[lola][I] time limit : 240 sec
[lola][I] memory limit: 2000 pages
[lola][I] FINISHED task # 53 (type EXCL) for Diffusion2D-PT-D05N100-LTLFireability-12
[lola][I] result : false
[lola][I] markings : 203
[lola][I] fired transitions : 203
[lola][I] time used : 0
[lola][I] memory pages used : 1
[lola][I] LAUNCH task # 50 (type EXCL) for 49 Diffusion2D-PT-D05N100-LTLFireability-11
[lola][I] time limit : 257 sec
[lola][I] memory limit: 2000 pages
[lola][I] FINISHED task # 50 (type EXCL) for Diffusion2D-PT-D05N100-LTLFireability-11
[lola][I] result : true
[lola][I] markings : 17
[lola][I] fired transitions : 16
[lola][I] time used : 0
[lola][I] memory pages used : 1
[lola][I] LAUNCH task # 59 (type EXCL) for 58 Diffusion2D-PT-D05N100-LTLFireability-14
[lola][I] time limit : 276 sec
[lola][I] memory limit: 2000 pages
[lola][I] LAUNCH task # 65 (type FNDP) for 35 Diffusion2D-PT-D05N100-LTLFireability-09
[lola][I] time limit : 32000000 sec
[lola][I] memory limit: 5 pages
[lola][I] LAUNCH task # 66 (type EQUN) for 35 Diffusion2D-PT-D05N100-LTLFireability-09
[lola][I] time limit : 32000000 sec
[lola][I] memory limit: 5 pages
[lola][I] FINISHED task # 59 (type EXCL) for Diffusion2D-PT-D05N100-LTLFireability-14
[lola][I] result : false
[lola][I] markings : 516
[lola][I] fired transitions : 755
[lola][I] time used : 0
[lola][I] memory pages used : 1
[lola][I] LAUNCH task # 14 (type EXCL) for 9 Diffusion2D-PT-D05N100-LTLFireability-03
[lola][I] time limit : 327 sec
[lola][I] memory limit: 2000 pages
[lola][I] LAUNCH task # 69 (type FNDP) for 23 Diffusion2D-PT-D05N100-LTLFireability-05
[lola][I] time limit : 32000000 sec
[lola][I] memory limit: 5 pages
[lola][I] FINISHED task # 14 (type EXCL) for Diffusion2D-PT-D05N100-LTLFireability-03
[lola][I] result : false
[lola][I] markings : 521
[lola][I] fired transitions : 734
[lola][I] time used : 0
[lola][I] memory pages used : 1
[lola][I] LAUNCH task # 62 (type EXCL) for 61 Diffusion2D-PT-D05N100-LTLFireability-15
[lola][I] time limit : 400 sec
[lola][I] memory limit: 2000 pages
[lola][I] FINISHED task # 62 (type EXCL) for Diffusion2D-PT-D05N100-LTLFireability-15
[lola][I] result : false
[lola][I] markings : 202
[lola][I] fired transitions : 202
[lola][I] time used : 0
[lola][I] memory pages used : 1
[lola][I] LAUNCH task # 7 (type EXCL) for 6 Diffusion2D-PT-D05N100-LTLFireability-02
[lola][I] time limit : 450 sec
[lola][I] memory limit: 2000 pages
[lola][I] FINISHED task # 7 (type EXCL) for Diffusion2D-PT-D05N100-LTLFireability-02
[lola][I] result : true
[lola][I] markings : 1
[lola][I] time used : 0
[lola][I] memory pages used : 1
[lola][I] LAUNCH task # 4 (type EXCL) for 3 Diffusion2D-PT-D05N100-LTLFireability-01
[lola][I] time limit : 514 sec
[lola][I] memory limit: 2000 pages
[lola][I] FINISHED task # 66 (type EQUN) for Diffusion2D-PT-D05N100-LTLFireability-09
[lola][I] result : true
[lola][W] CANCELED task # 65 (type FNDP) for Diffusion2D-PT-D05N100-LTLFireability-09 (obsolete)
[lola][I] LAUNCH task # 70 (type EQUN) for 23 Diffusion2D-PT-D05N100-LTLFireability-05
[lola][I] time limit : 32000000 sec
[lola][I] memory limit: 5 pages
[lola][I] FINISHED task # 4 (type EXCL) for Diffusion2D-PT-D05N100-LTLFireability-01
[lola][I] result : false
[lola][I] markings : 401
[lola][I] fired transitions : 401
[lola][I] time used : 0
[lola][I] memory pages used : 1
[lola][I] LAUNCH task # 1 (type EXCL) for 0 Diffusion2D-PT-D05N100-LTLFireability-00
[lola][I] time limit : 900 sec
[lola][I] memory limit: 2000 pages
[lola][I] FINISHED task # 65 (type FNDP) for Diffusion2D-PT-D05N100-LTLFireability-09
[lola][I] result : true
[lola][I] tried executions : 1
[lola][I] time used : 0
[lola][I] memory pages used : 0
[lola][I] FINISHED task # 1 (type EXCL) for Diffusion2D-PT-D05N100-LTLFireability-00
[lola][I] result : false
[lola][I] markings : 202
[lola][I] fired transitions : 202
[lola][I] time used : 0
[lola][I] memory pages used : 1
[lola][I] LAUNCH task # 71 (type EXCL) for 23 Diffusion2D-PT-D05N100-LTLFireability-05
[lola][I] time limit : 1200 sec
[lola][I] memory limit: 2000 pages
[lola][I] FINISHED task # 69 (type FNDP) for Diffusion2D-PT-D05N100-LTLFireability-05
[lola][I] result : true
[lola][I] tried executions : 1
[lola][I] time used : 0
[lola][I] memory pages used : 0
[lola][W] CANCELED task # 70 (type EQUN) for Diffusion2D-PT-D05N100-LTLFireability-05 (obsolete)
[lola][W] CANCELED task # 71 (type EXCL) for Diffusion2D-PT-D05N100-LTLFireability-05 (obsolete)
[lola][I] LAUNCH task # 30 (type EXCL) for 29 Diffusion2D-PT-D05N100-LTLFireability-07
[lola][I] time limit : 1800 sec
[lola][I] memory limit: 2000 pages
[lola][I] FINISHED task # 71 (type EXCL) for Diffusion2D-PT-D05N100-LTLFireability-05
[lola][I] result : true
[lola][I] markings : 2
[lola][I] fired transitions : 1
[lola][I] time used : 0
[lola][I] memory pages used : 1
[lola][I] FINISHED task # 30 (type EXCL) for Diffusion2D-PT-D05N100-LTLFireability-07
[lola][I] result : false
[lola][I] markings : 2
[lola][I] fired transitions : 3
[lola][I] time used : 0
[lola][I] memory pages used : 1
[lola][I] LAUNCH task # 56 (type EXCL) for 55 Diffusion2D-PT-D05N100-LTLFireability-13
[lola][I] time limit : 3600 sec
[lola][I] memory limit: 2000 pages
[lola][I] FINISHED task # 56 (type EXCL) for Diffusion2D-PT-D05N100-LTLFireability-13
[lola][I] result : false
[lola][I] markings : 2
[lola][I] fired transitions : 3
[lola][I] time used : 0
[lola][I] memory pages used : 1
[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="Diffusion2D-PT-D05N100"
export BK_EXAMINATION="LTLFireability"
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 Diffusion2D-PT-D05N100, examination is LTLFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r137-tall-171631133600148"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/Diffusion2D-PT-D05N100.tgz
mv Diffusion2D-PT-D05N100 execution
cd execution
if [ "LTLFireability" = "ReachabilityDeadlock" ] || [ "LTLFireability" = "UpperBounds" ] || [ "LTLFireability" = "QuasiLiveness" ] || [ "LTLFireability" = "StableMarking" ] || [ "LTLFireability" = "Liveness" ] || [ "LTLFireability" = "OneSafe" ] || [ "LTLFireability" = "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 [ "LTLFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "LTLFireability" != "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 "LTLFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property LTLFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "LTLFireability.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 '' LTLFireability.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "LTLFireability" = "ReachabilityDeadlock" ] || [ "LTLFireability" = "QuasiLiveness" ] || [ "LTLFireability" = "StableMarking" ] || [ "LTLFireability" = "Liveness" ] || [ "LTLFireability" = "OneSafe" ] ; then
echo "FORMULA_NAME LTLFireability"
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 ;