fond
Model Checking Contest 2023
13th edition, Paris, France, April 26, 2023 (at TOOLympics II)
Execution of r062-tajo-167813711100349
Last Updated
May 14, 2023

About the Execution of 2022-gold for BusinessProcesses-PT-03

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
16225.060 3592740.00 8509088.00 6450.10 F?FFF??TFTFTFTTF normal

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.r062-tajo-167813711100349.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 gold2022
Input is BusinessProcesses-PT-03, examination is CTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r062-tajo-167813711100349
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 500K
-rw-r--r-- 1 mcc users 7.4K Feb 25 16:51 CTLCardinality.txt
-rw-r--r-- 1 mcc users 79K Feb 25 16:51 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.2K Feb 25 16:50 CTLFireability.txt
-rw-r--r-- 1 mcc users 45K Feb 25 16:50 CTLFireability.xml
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 equiv_col
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:40 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.8K Jan 29 11:40 GenericPropertiesVerdict.xml
-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 3.6K Feb 25 15:38 LTLCardinality.txt
-rw-r--r-- 1 mcc users 26K Feb 25 15:38 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K Feb 25 15:38 LTLFireability.txt
-rw-r--r-- 1 mcc users 16K Feb 25 15:38 LTLFireability.xml
-rw-r--r-- 1 mcc users 63K Mar 5 18:22 model.pnml
-rw-r--r-- 1 mcc users 12K Feb 25 16:52 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 123K Feb 25 16:52 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 7.1K Feb 25 16:51 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 57K Feb 25 16:51 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Feb 25 15:38 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Feb 25 15:38 UpperBounds.xml

--------------------
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 BusinessProcesses-PT-03-CTLCardinality-00
FORMULA_NAME BusinessProcesses-PT-03-CTLCardinality-01
FORMULA_NAME BusinessProcesses-PT-03-CTLCardinality-02
FORMULA_NAME BusinessProcesses-PT-03-CTLCardinality-03
FORMULA_NAME BusinessProcesses-PT-03-CTLCardinality-04
FORMULA_NAME BusinessProcesses-PT-03-CTLCardinality-05
FORMULA_NAME BusinessProcesses-PT-03-CTLCardinality-06
FORMULA_NAME BusinessProcesses-PT-03-CTLCardinality-07
FORMULA_NAME BusinessProcesses-PT-03-CTLCardinality-08
FORMULA_NAME BusinessProcesses-PT-03-CTLCardinality-09
FORMULA_NAME BusinessProcesses-PT-03-CTLCardinality-10
FORMULA_NAME BusinessProcesses-PT-03-CTLCardinality-11
FORMULA_NAME BusinessProcesses-PT-03-CTLCardinality-12
FORMULA_NAME BusinessProcesses-PT-03-CTLCardinality-13
FORMULA_NAME BusinessProcesses-PT-03-CTLCardinality-14
FORMULA_NAME BusinessProcesses-PT-03-CTLCardinality-15

=== Now, execution of the tool begins

BK_START 1678903745533

gold2022
Got BK_BIN_PATH=/home/mcc/BenchKit/bin/
---> gold2022 --- TAPAAL v5
Setting MODEL_PATH=.
Setting VERIFYPN=/home/mcc/BenchKit/bin/verifypn
Got BK_TIME_CONFINEMENT=3600
Setting TEMPDIR=/home/mcc/BenchKit/bin/tmp
Got BK_MEMORY_CONFINEMENT=16384
Limiting to 16265216 kB
Total timeout: 3590
Time left: 3590

*************************************
* TAPAAL verifying CTLCardinality *
*************************************
TEMPDIR=/home/mcc/BenchKit/bin/tmp
QF=/home/mcc/BenchKit/bin/tmp/tmp.fWMZ3JCzUY
MF=/home/mcc/BenchKit/bin/tmp/tmp.9t7qUArjLl
Time left: 3590
---------------------------------------------------
Step -1: Stripping Colors
---------------------------------------------------
Verifying stripped models (16 in total)
/home/mcc/BenchKit/bin/verifypn -n -c -q 718 -l 29 -d 299 -z 4 -x 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 ./model.pnml ./CTLCardinality.xml
CPN OverApproximation is only usable on colored models
Time left: 3590
---------------------------------------------------
Step 0: Parallel Simplification
---------------------------------------------------
Doing parallel simplification (16 in total)
Total simplification timout is 718 -- reduction timeout is 299
timeout 3590 /home/mcc/BenchKit/bin/verifypn -n -q 718 -l 29 -d 299 -z 4 -s OverApprox --binary-query-io 2 --write-simplified /home/mcc/BenchKit/bin/tmp/tmp.fWMZ3JCzUY --write-reduced /home/mcc/BenchKit/bin/tmp/tmp.9t7qUArjLl -x 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 ./model.pnml ./CTLCardinality.xml
FORMULA BusinessProcesses-PT-03-CTLCardinality-08 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT LP_APPROX
Query index 8 was solved

Query is NOT satisfied.

FORMULA BusinessProcesses-PT-03-CTLCardinality-09 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT LP_APPROX
Query index 9 was solved

Query is satisfied.
Solution found by parallel simplification (step 0)
Solution found by parallel simplification (step 0)
Time left: 3590

---------------------------------------------------
Step 1: Parallel processing
---------------------------------------------------
Doing parallel verification of individual queries (14 in total)
Each query is verified by 4 parallel strategies for 299 seconds
------------------- QUERY 1 ----------------------
Solution found by parallel processing (step 1)


Query index 0 was solved
Query is NOT satisfied.

Spent 0.071841 on verification
@@@0.08,60188@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -tar\ -s\ RDFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.9t7qUArjLl /home/mcc/BenchKit/bin/tmp/tmp.fWMZ3JCzUY --binary-query-io 1 -x 1 -n

FORMULA BusinessProcesses-PT-03-CTLCardinality-15 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION SAT_SMT STUBBORN_SETS CTL_CZERO
Time left: 3589
------------------- QUERY 2 ----------------------
Solution found by parallel processing (step 1)


Query index 0 was solved
Query is NOT satisfied.

Spent 0.059594 on verification
@@@0.06,60072@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ BestFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.9t7qUArjLl /home/mcc/BenchKit/bin/tmp/tmp.fWMZ3JCzUY --binary-query-io 1 -x 2 -n

FORMULA BusinessProcesses-PT-03-CTLCardinality-02 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION SAT_SMT STUBBORN_SETS CTL_CZERO
Time left: 3589
------------------- QUERY 3 ----------------------
Solution found by parallel processing (step 1)


Query index 0 was solved
Query is NOT satisfied.

Spent 0.063789 on verification


Query index 0 was solved
Query is NOT satisfied.

Spent 0.070165 on verification
@@@0.07,60080@@@
@@@0.07,60176@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -tar\ -s\ RDFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.9t7qUArjLl /home/mcc/BenchKit/bin/tmp/tmp.fWMZ3JCzUY --binary-query-io 1 -x 3 -n
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ DFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.9t7qUArjLl /home/mcc/BenchKit/bin/tmp/tmp.fWMZ3JCzUY --binary-query-io 1 -x 3 -n

FORMULA BusinessProcesses-PT-03-CTLCardinality-00 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION SAT_SMT STUBBORN_SETS CTL_CZERO
Time left: 3589
------------------- QUERY 4 ----------------------
Solution found by parallel processing (step 1)


Query index 0 was solved
Query is satisfied.

Spent 0.070465 on verification
@@@0.09,60040@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ DFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.9t7qUArjLl /home/mcc/BenchKit/bin/tmp/tmp.fWMZ3JCzUY --binary-query-io 1 -x 4 -n

FORMULA BusinessProcesses-PT-03-CTLCardinality-07 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION SAT_SMT STUBBORN_SETS CTL_CZERO
Time left: 3588
------------------- QUERY 5 ----------------------
Solution found by parallel processing (step 1)


Query index 0 was solved
Query is satisfied.

Spent 0.06474 on verification
@@@0.07,60124@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ BestFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.9t7qUArjLl /home/mcc/BenchKit/bin/tmp/tmp.fWMZ3JCzUY --binary-query-io 1 -x 5 -n

FORMULA BusinessProcesses-PT-03-CTLCardinality-11 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION SAT_SMT STUBBORN_SETS CTL_CZERO
Time left: 3588
------------------- QUERY 6 ----------------------
Solution found by parallel processing (step 1)


Query index 0 was solved
Query is NOT satisfied.

Spent 0.070353 on verification
@@@0.08,60040@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -tar\ -s\ RDFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.9t7qUArjLl /home/mcc/BenchKit/bin/tmp/tmp.fWMZ3JCzUY --binary-query-io 1 -x 6 -n

FORMULA BusinessProcesses-PT-03-CTLCardinality-04 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION SAT_SMT STUBBORN_SETS CTL_CZERO
Time left: 3588
------------------- QUERY 7 ----------------------
No solution found
Command terminated by signal 9
@@@143.72,8464300@@@
Command terminated by signal 9
@@@312.09,8095952@@@


Time left: 3274
------------------- QUERY 8 ----------------------
Solution found by parallel processing (step 1)


Query index 0 was solved
Query is NOT satisfied.

Spent 0.115606 on verification
@@@0.14,60016@@@


Query index 0 was solved
Query is NOT satisfied.

Spent 0.130948 on verification
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ DFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.9t7qUArjLl /home/mcc/BenchKit/bin/tmp/tmp.fWMZ3JCzUY --binary-query-io 1 -x 8 -n

FORMULA BusinessProcesses-PT-03-CTLCardinality-03 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION SAT_SMT STUBBORN_SETS CTL_CZERO
Time left: 3274
------------------- QUERY 9 ----------------------
Solution found by parallel processing (step 1)


Query index 0 was solved
Query is satisfied.

Spent 0.065879 on verification
@@@0.07,60180@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -tar\ -s\ RDFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.9t7qUArjLl /home/mcc/BenchKit/bin/tmp/tmp.fWMZ3JCzUY --binary-query-io 1 -x 9 -n

FORMULA BusinessProcesses-PT-03-CTLCardinality-14 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION SAT_SMT STUBBORN_SETS CTL_CZERO
Time left: 3273
------------------- QUERY 10 ----------------------
No solution found
Command terminated by signal 9
@@@160.07,9638708@@@


Time left: 2971
------------------- QUERY 11 ----------------------
Solution found by parallel processing (step 1)


Query index 0 was solved
Query is satisfied.

Spent 0.136879 on verification
@@@0.18,60132@@@


Query index 0 was solved
Query is satisfied.

Spent 0.120918 on verification
@@@0.14,60000@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ DFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.9t7qUArjLl /home/mcc/BenchKit/bin/tmp/tmp.fWMZ3JCzUY --binary-query-io 1 -x 11 -n
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -tar\ -s\ RDFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.9t7qUArjLl /home/mcc/BenchKit/bin/tmp/tmp.fWMZ3JCzUY --binary-query-io 1 -x 11 -n

FORMULA BusinessProcesses-PT-03-CTLCardinality-13 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION SAT_SMT STUBBORN_SETS CTL_CZERO
Time left: 2970
------------------- QUERY 12 ----------------------
No solution found
Command terminated by signal 9
@@@170.37,6408480@@@
Command terminated by signal 9
@@@263.89,9462624@@@


Time left: 2669
------------------- QUERY 13 ----------------------
Solution found by parallel processing (step 1)


Query index 0 was solved
Query is NOT satisfied.

Spent 5.12145 on verification
@@@5.14,252256@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ DFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.9t7qUArjLl /home/mcc/BenchKit/bin/tmp/tmp.fWMZ3JCzUY --binary-query-io 1 -x 13 -n

FORMULA BusinessProcesses-PT-03-CTLCardinality-12 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION SAT_SMT STUBBORN_SETS CTL_CZERO
Time left: 2663
------------------- QUERY 14 ----------------------
Solution found by parallel processing (step 1)


Query index 0 was solved
Query is NOT satisfied.

Spent 0.070128 on verification
@@@0.08,60036@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ DFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.9t7qUArjLl /home/mcc/BenchKit/bin/tmp/tmp.fWMZ3JCzUY --binary-query-io 1 -x 14 -n

FORMULA BusinessProcesses-PT-03-CTLCardinality-10 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION SAT_SMT STUBBORN_SETS CTL_CZERO
Time left: 2663
---------------------------------------------------
Step 2: Sequential processing
---------------------------------------------------
Remaining 3 queries are verified sequentially.
Each query is verified for a dynamic timeout (at least 512 seconds)
Time left: 2663
------------------- QUERY 7 ----------------------
Running query 7 for 887 seconds. Remaining: 3 queries and 2663 seconds
No solution found
Command terminated by signal 9
@@@217.78,8386632@@@
Command terminated by signal 9
@@@509.48,16144816@@@


Time left: 2153
------------------- QUERY 10 ----------------------
Running query 10 for 1076 seconds. Remaining: 2 queries and 2153 seconds
No solution found
Command terminated by signal 9
@@@245.14,11015492@@@
Command terminated by signal 9
@@@833.51,16149392@@@


Time left: 1319
------------------- QUERY 12 ----------------------
Running query 12 for 1319 seconds. Remaining: 1 queries and 1319 seconds
No solution found
Command terminated by signal 9
@@@184.71,8281900@@@
Command terminated by signal 9
@@@404.81,16146436@@@


Time left: 914
Time left: 914
---------------------------------------------------
Step 4: Random Parallel processing
---------------------------------------------------
Doing random parallel verification of individual queries (3 in total)
Each query is verified by 4 parallel strategies for 304 seconds
------------------- QUERY 7 ----------------------
No solution found
Command terminated by signal 9
@@@151.95,4949736@@@
Command terminated by signal 9
@@@223.48,5483780@@@
Command terminated by signal 9
@@@297.84,8102204@@@


Time left: 608
------------------- QUERY 10 ----------------------
No solution found



Time left: 300
------------------- QUERY 12 ----------------------
No solution found
Command terminated by signal 9
@@@115.14,4136976@@@
Command terminated by signal 9
@@@150.09,5439824@@@
Command terminated by signal 9
@@@220.31,8332340@@@


Time left: -3
Out of time, terminating!
terminated-with-cleanup

BK_STOP 1678907338273

--------------------
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="BusinessProcesses-PT-03"
export BK_EXAMINATION="CTLCardinality"
export BK_TOOL="gold2022"
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 gold2022"
echo " Input is BusinessProcesses-PT-03, examination is CTLCardinality"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r062-tajo-167813711100349"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/BusinessProcesses-PT-03.tgz
mv BusinessProcesses-PT-03 execution
cd execution
if [ "CTLCardinality" = "ReachabilityDeadlock" ] || [ "CTLCardinality" = "UpperBounds" ] || [ "CTLCardinality" = "QuasiLiveness" ] || [ "CTLCardinality" = "StableMarking" ] || [ "CTLCardinality" = "Liveness" ] || [ "CTLCardinality" = "OneSafe" ] || [ "CTLCardinality" = "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 [ "CTLCardinality" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "CTLCardinality" != "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 "CTLCardinality.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property CTLCardinality.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "CTLCardinality.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 '' CTLCardinality.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "CTLCardinality" = "ReachabilityDeadlock" ] || [ "CTLCardinality" = "QuasiLiveness" ] || [ "CTLCardinality" = "StableMarking" ] || [ "CTLCardinality" = "Liveness" ] || [ "CTLCardinality" = "OneSafe" ] ; then
echo "FORMULA_NAME CTLCardinality"
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 ;