Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2022-input.r309-tall-165472278400951.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2022-input.qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
=====================================================================
Generated by BenchKit 2-4028
Executing tool tapaal
Input is SieveSingleMsgMbox-PT-d2m06, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r309-tall-165472278400951
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 1.5M
-rw-r--r-- 1 mcc users 6.0K Jun 7 17:04 CTLCardinality.txt
-rw-r--r-- 1 mcc users 58K Jun 7 17:04 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.4K Jun 7 17:03 CTLFireability.txt
-rw-r--r-- 1 mcc users 59K Jun 7 17:03 CTLFireability.xml
-rw-r--r-- 1 mcc users 6 Jun 6 12:11 equiv_col
-rw-r--r-- 1 mcc users 6 Jun 6 12:11 instance
-rw-r--r-- 1 mcc users 6 Jun 6 12:11 iscolored
-rw-r--r-- 1 mcc users 3.8K Jun 6 15:32 LTLCardinality.txt
-rw-r--r-- 1 mcc users 27K Jun 6 15:32 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.5K Jun 6 15:32 LTLFireability.txt
-rw-r--r-- 1 mcc users 19K Jun 6 15:32 LTLFireability.xml
-rw-r--r-- 1 mcc users 1.1M Jun 6 12:11 model.pnml
-rw-r--r-- 1 mcc users 1 Jun 6 12:11 NewModel
-rw-r--r-- 1 mcc users 7.2K Jun 7 17:06 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 66K Jun 7 17:06 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 7.9K Jun 7 17:05 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 66K Jun 7 17:05 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K Jun 6 15:32 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Jun 6 15:32 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 SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-00
FORMULA_NAME SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-01
FORMULA_NAME SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-02
FORMULA_NAME SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-03
FORMULA_NAME SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-04
FORMULA_NAME SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-05
FORMULA_NAME SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-06
FORMULA_NAME SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-07
FORMULA_NAME SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-08
FORMULA_NAME SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-09
FORMULA_NAME SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-10
FORMULA_NAME SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-11
FORMULA_NAME SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-12
FORMULA_NAME SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-13
FORMULA_NAME SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-14
FORMULA_NAME SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-15

=== Now, execution of the tool begins

BK_START 1654948056698

tapaal
Got BK_BIN_PATH=/home/mcc/BenchKit/bin/
---> tapaal --- 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 ReachabilityFireability *
**********************************************
TEMPDIR=/home/mcc/BenchKit/bin/tmp
QF=/home/mcc/BenchKit/bin/tmp/tmp.iHJGRBT8rH
MF=/home/mcc/BenchKit/bin/tmp/tmp.CGEh3p901m
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 ./ReachabilityFireability.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.iHJGRBT8rH --write-reduced /home/mcc/BenchKit/bin/tmp/tmp.CGEh3p901m -x 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 ./model.pnml ./ReachabilityFireability.xml
FORMULA SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-05 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT LP_APPROX
Query index 5 was solved

Query is NOT satisfied.

FORMULA SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-09 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT LP_APPROX
Query index 9 was solved

Query is NOT satisfied.
Solution found by parallel simplification (step 0)
Solution found by parallel simplification (step 0)
Time left: 3584

---------------------------------------------------
Step 1: Parallel processing
---------------------------------------------------
Doing parallel verification of individual queries (14 in total)
Each query is verified by 4 parallel strategies for 256 seconds
------------------- QUERY 1 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is satisfied.

Spent 0.453507 on verification
@@@0.63,9288@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ BFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.CGEh3p901m /home/mcc/BenchKit/bin/tmp/tmp.iHJGRBT8rH --binary-query-io 1 -x 1 -n

FORMULA SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-01 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 3583
------------------- QUERY 2 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is satisfied.

Spent 2.56347 on verification
@@@2.74,16904@@@
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.CGEh3p901m /home/mcc/BenchKit/bin/tmp/tmp.iHJGRBT8rH --binary-query-io 1 -x 2 -n

FORMULA SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-04 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 3580
------------------- QUERY 3 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is satisfied.

Spent 6.05075 on verification
@@@6.23,24684@@@
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.CGEh3p901m /home/mcc/BenchKit/bin/tmp/tmp.iHJGRBT8rH --binary-query-io 1 -x 3 -n

FORMULA SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-06 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 3574
------------------- QUERY 4 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is satisfied.

Spent 0.458917 on verification
@@@0.67,9212@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ BFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.CGEh3p901m /home/mcc/BenchKit/bin/tmp/tmp.iHJGRBT8rH --binary-query-io 1 -x 4 -n

FORMULA SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-08 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 3573
------------------- QUERY 5 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is satisfied.

Spent 0.093198 on verification
@@@0.28,9484@@@
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.CGEh3p901m /home/mcc/BenchKit/bin/tmp/tmp.iHJGRBT8rH --binary-query-io 1 -x 5 -n

FORMULA SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-14 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 3573
------------------- QUERY 6 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is satisfied.

Spent 0.012408 on verification
@@@0.18,9200@@@
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.CGEh3p901m /home/mcc/BenchKit/bin/tmp/tmp.iHJGRBT8rH --binary-query-io 1 -x 6 -n

FORMULA SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-00 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 3572
------------------- QUERY 7 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is satisfied.

Spent 5.5483 on verification
@@@5.72,24912@@@
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.CGEh3p901m /home/mcc/BenchKit/bin/tmp/tmp.iHJGRBT8rH --binary-query-io 1 -x 7 -n

FORMULA SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-03 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 3566
------------------- QUERY 8 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is satisfied.

Spent 0.004262 on verification
@@@0.18,9160@@@
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.CGEh3p901m /home/mcc/BenchKit/bin/tmp/tmp.iHJGRBT8rH --binary-query-io 1 -x 8 -n

FORMULA SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-07 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 3566
------------------- QUERY 9 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is satisfied.

Spent 0.126859 on verification
@@@0.31,9256@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ BFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.CGEh3p901m /home/mcc/BenchKit/bin/tmp/tmp.iHJGRBT8rH --binary-query-io 1 -x 9 -n

FORMULA SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-13 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 3565
------------------- QUERY 10 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is satisfied.

Spent 0.112846 on verification
@@@0.28,9332@@@
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.CGEh3p901m /home/mcc/BenchKit/bin/tmp/tmp.iHJGRBT8rH --binary-query-io 1 -x 10 -n

FORMULA SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-10 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 3565
------------------- QUERY 11 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is NOT satisfied.

Spent 1.92073 on verification
@@@2.12,14896@@@
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.CGEh3p901m /home/mcc/BenchKit/bin/tmp/tmp.iHJGRBT8rH --binary-query-io 1 -x 11 -n

FORMULA SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-11 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 3562
------------------- QUERY 12 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is satisfied.

Spent 5.61935 on verification
@@@5.83,24968@@@
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.CGEh3p901m /home/mcc/BenchKit/bin/tmp/tmp.iHJGRBT8rH --binary-query-io 1 -x 12 -n

FORMULA SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-02 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 3556
------------------- QUERY 13 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is NOT satisfied.

Spent 5.87695 on verification
@@@6.06,24888@@@
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.CGEh3p901m /home/mcc/BenchKit/bin/tmp/tmp.iHJGRBT8rH --binary-query-io 1 -x 13 -n

FORMULA SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-12 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 3550
------------------- QUERY 14 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is NOT satisfied.

Spent 0.028151 on verification
@@@0.21,9336@@@
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.CGEh3p901m /home/mcc/BenchKit/bin/tmp/tmp.iHJGRBT8rH --binary-query-io 1 -x 14 -n

FORMULA SieveSingleMsgMbox-PT-d2m06-ReachabilityFireability-15 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 3550
All queries are solved
Time left: 3550
terminated-with-cleanup

BK_STOP 1654948096931

--------------------
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="SieveSingleMsgMbox-PT-d2m06"
export BK_EXAMINATION="ReachabilityFireability"
export BK_TOOL="tapaal"
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 2-4028"
echo " Executing tool tapaal"
echo " Input is SieveSingleMsgMbox-PT-d2m06, examination is ReachabilityFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r309-tall-165472278400951"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/SieveSingleMsgMbox-PT-d2m06.tgz
mv SieveSingleMsgMbox-PT-d2m06 execution
cd execution
if [ "ReachabilityFireability" = "ReachabilityDeadlock" ] || [ "ReachabilityFireability" = "UpperBounds" ] || [ "ReachabilityFireability" = "QuasiLiveness" ] || [ "ReachabilityFireability" = "StableMarking" ] || [ "ReachabilityFireability" = "Liveness" ] || [ "ReachabilityFireability" = "OneSafe" ] || [ "ReachabilityFireability" = "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 [ "ReachabilityFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "ReachabilityFireability" != "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 "ReachabilityFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property ReachabilityFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "ReachabilityFireability.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 '' ReachabilityFireability.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "ReachabilityFireability" = "ReachabilityDeadlock" ] || [ "ReachabilityFireability" = "QuasiLiveness" ] || [ "ReachabilityFireability" = "StableMarking" ] || [ "ReachabilityFireability" = "Liveness" ] || [ "ReachabilityFireability" = "OneSafe" ] ; then
echo "FORMULA_NAME ReachabilityFireability"
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 ;