About the Execution of Tapaal for Sudoku-COL-BN16
Execution Summary | |||||
Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
4325.928 | 3592241.00 | 11660994.00 | 4231.20 | F?FTF?FTFFFFF??? | normal |
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.r255-tall-165303542100199.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 Sudoku-COL-BN16, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r255-tall-165303542100199
=====================================================================
--------------------
preparation of the directory to be used:
/home/mcc/execution
total 856K
-rw-r--r-- 1 mcc users 6.0K Apr 30 12:21 CTLCardinality.txt
-rw-r--r-- 1 mcc users 58K Apr 30 12:21 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.4K Apr 30 11:46 CTLFireability.txt
-rw-r--r-- 1 mcc users 46K Apr 30 11:46 CTLFireability.xml
-rw-r--r-- 1 mcc users 5 May 10 09:34 equiv_pt
-rw-r--r-- 1 mcc users 4.2K May 10 09:34 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.6K May 10 09:34 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 5 May 10 09:34 instance
-rw-r--r-- 1 mcc users 5 May 10 09:34 iscolored
-rw-r--r-- 1 mcc users 3.5K May 9 09:13 LTLCardinality.txt
-rw-r--r-- 1 mcc users 23K May 9 09:13 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.4K May 9 09:13 LTLFireability.txt
-rw-r--r-- 1 mcc users 19K May 9 09:13 LTLFireability.xml
-rw-r--r-- 1 mcc users 446K May 10 09:34 model.pnml
-rw-r--r-- 1 mcc users 11K Apr 30 13:35 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 111K Apr 30 13:35 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 7.7K Apr 30 12:37 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 63K Apr 30 12:37 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K May 9 09:13 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K May 9 09:13 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 Sudoku-COL-BN16-ReachabilityFireability-00
FORMULA_NAME Sudoku-COL-BN16-ReachabilityFireability-01
FORMULA_NAME Sudoku-COL-BN16-ReachabilityFireability-02
FORMULA_NAME Sudoku-COL-BN16-ReachabilityFireability-03
FORMULA_NAME Sudoku-COL-BN16-ReachabilityFireability-04
FORMULA_NAME Sudoku-COL-BN16-ReachabilityFireability-05
FORMULA_NAME Sudoku-COL-BN16-ReachabilityFireability-06
FORMULA_NAME Sudoku-COL-BN16-ReachabilityFireability-07
FORMULA_NAME Sudoku-COL-BN16-ReachabilityFireability-08
FORMULA_NAME Sudoku-COL-BN16-ReachabilityFireability-09
FORMULA_NAME Sudoku-COL-BN16-ReachabilityFireability-10
FORMULA_NAME Sudoku-COL-BN16-ReachabilityFireability-11
FORMULA_NAME Sudoku-COL-BN16-ReachabilityFireability-12
FORMULA_NAME Sudoku-COL-BN16-ReachabilityFireability-13
FORMULA_NAME Sudoku-COL-BN16-ReachabilityFireability-14
FORMULA_NAME Sudoku-COL-BN16-ReachabilityFireability-15
=== Now, execution of the tool begins
BK_START 1654345963639
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.mJv4Ff9Vw0
MF=/home/mcc/BenchKit/bin/tmp/tmp.srEDeeryoj
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
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping Sudoku-COL-BN16-ReachabilityFireability-15
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping Sudoku-COL-BN16-ReachabilityFireability-14
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping Sudoku-COL-BN16-ReachabilityFireability-13
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping Sudoku-COL-BN16-ReachabilityFireability-12
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping Sudoku-COL-BN16-ReachabilityFireability-11
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping Sudoku-COL-BN16-ReachabilityFireability-10
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping Sudoku-COL-BN16-ReachabilityFireability-09
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping Sudoku-COL-BN16-ReachabilityFireability-08
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping Sudoku-COL-BN16-ReachabilityFireability-07
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping Sudoku-COL-BN16-ReachabilityFireability-06
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping Sudoku-COL-BN16-ReachabilityFireability-05
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping Sudoku-COL-BN16-ReachabilityFireability-04
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping Sudoku-COL-BN16-ReachabilityFireability-03
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping Sudoku-COL-BN16-ReachabilityFireability-02
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping Sudoku-COL-BN16-ReachabilityFireability-01
Warning: CPN OverApproximation is only available for Reachability queries without deadlock, negated fireability and UpperBounds, skipping Sudoku-COL-BN16-ReachabilityFireability-00
WARNING: Could not run CPN over-approximation on any queries, terminating.
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.mJv4Ff9Vw0 --write-reduced /home/mcc/BenchKit/bin/tmp/tmp.srEDeeryoj -x 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 ./model.pnml ./ReachabilityFireability.xml
FORMULA Sudoku-COL-BN16-ReachabilityFireability-07 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT LP_APPROX UNFOLDING_TO_PT
Query index 7 was solved
Query is satisfied.
Solution found by parallel simplification (step 0)
Time left: 2868
---------------------------------------------------
Step 1: Parallel processing
---------------------------------------------------
Doing parallel verification of individual queries (15 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 2.68063 on verification
@@@3.78,181584@@@
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.srEDeeryoj /home/mcc/BenchKit/bin/tmp/tmp.mJv4Ff9Vw0 --binary-query-io 1 -x 1 -n
FORMULA Sudoku-COL-BN16-ReachabilityFireability-03 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 2864
------------------- QUERY 2 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved
Query is NOT satisfied.
Spent 2.74418 on verification
@@@3.87,181716@@@
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.srEDeeryoj /home/mcc/BenchKit/bin/tmp/tmp.mJv4Ff9Vw0 --binary-query-io 1 -x 2 -n
FORMULA Sudoku-COL-BN16-ReachabilityFireability-02 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 2860
------------------- QUERY 3 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved
Query is NOT satisfied.
Spent 4.17635 on verification
@@@5.33,181696@@@
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.srEDeeryoj /home/mcc/BenchKit/bin/tmp/tmp.mJv4Ff9Vw0 --binary-query-io 1 -x 3 -n
FORMULA Sudoku-COL-BN16-ReachabilityFireability-04 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 2854
------------------- QUERY 4 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved
Query is NOT satisfied.
Spent 2.75267 on verification
@@@3.90,181772@@@
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.srEDeeryoj /home/mcc/BenchKit/bin/tmp/tmp.mJv4Ff9Vw0 --binary-query-io 1 -x 4 -n
FORMULA Sudoku-COL-BN16-ReachabilityFireability-06 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 2850
------------------- QUERY 5 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved
Query is NOT satisfied.
Spent 2.78661 on verification
@@@4.00,181768@@@
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.srEDeeryoj /home/mcc/BenchKit/bin/tmp/tmp.mJv4Ff9Vw0 --binary-query-io 1 -x 5 -n
FORMULA Sudoku-COL-BN16-ReachabilityFireability-08 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 2846
------------------- QUERY 6 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved
Query is NOT satisfied.
Spent 2.80006 on verification
@@@3.94,181732@@@
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.srEDeeryoj /home/mcc/BenchKit/bin/tmp/tmp.mJv4Ff9Vw0 --binary-query-io 1 -x 6 -n
FORMULA Sudoku-COL-BN16-ReachabilityFireability-09 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 2842
------------------- QUERY 7 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved
Query is NOT satisfied.
Spent 2.76191 on verification
@@@3.96,181720@@@
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.srEDeeryoj /home/mcc/BenchKit/bin/tmp/tmp.mJv4Ff9Vw0 --binary-query-io 1 -x 7 -n
FORMULA Sudoku-COL-BN16-ReachabilityFireability-11 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 2838
------------------- QUERY 8 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved
Query is NOT satisfied.
Spent 2.79656 on verification
@@@3.98,181672@@@
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.srEDeeryoj /home/mcc/BenchKit/bin/tmp/tmp.mJv4Ff9Vw0 --binary-query-io 1 -x 8 -n
FORMULA Sudoku-COL-BN16-ReachabilityFireability-12 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 2833
------------------- QUERY 9 ----------------------
No solution found
Time left: 2574
------------------- QUERY 10 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved
Query is NOT satisfied.
Spent 2.788 on verification
@@@4.62,194480@@@
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.srEDeeryoj /home/mcc/BenchKit/bin/tmp/tmp.mJv4Ff9Vw0 --binary-query-io 1 -x 10 -n
FORMULA Sudoku-COL-BN16-ReachabilityFireability-10 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 2569
------------------- QUERY 11 ----------------------
No solution found
Time left: 2310
------------------- QUERY 12 ----------------------
No solution found
Time left: 2051
------------------- QUERY 13 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved
Query is NOT satisfied.
Spent 2.92872 on verification
@@@4.33,200632@@@
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.srEDeeryoj /home/mcc/BenchKit/bin/tmp/tmp.mJv4Ff9Vw0 --binary-query-io 1 -x 13 -n
FORMULA Sudoku-COL-BN16-ReachabilityFireability-00 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 2047
------------------- QUERY 14 ----------------------
No solution found
Time left: 1789
------------------- QUERY 15 ----------------------
No solution found
Time left: 1530
---------------------------------------------------
Step 2: Sequential processing
---------------------------------------------------
Remaining 5 queries are verified sequentially.
Each query is verified for a dynamic timeout (at least 598 seconds)
Time left: 1530
------------------- QUERY 9 ----------------------
Running query 9 for 598 seconds. Remaining: 5 queries and 1530 seconds
No solution found
Time left: 929
------------------- QUERY 11 ----------------------
Running query 11 for 598 seconds. Remaining: 4 queries and 929 seconds
No solution found
Time left: 329
------------------- QUERY 12 ----------------------
Time left: 329
---------------------------------------------------
Step 4: Random Parallel processing
---------------------------------------------------
Doing random parallel verification of individual queries (5 in total)
Each query is verified by 4 parallel strategies for 65 seconds
------------------- QUERY 9 ----------------------
No solution found
Time left: 262
------------------- QUERY 11 ----------------------
No solution found
Time left: 195
------------------- QUERY 12 ----------------------
No solution found
Time left: 127
------------------- QUERY 14 ----------------------
No solution found
Time left: 60
------------------- QUERY 15 ----------------------
No solution found
Time left: -2
Out of time, terminating!
terminated-with-cleanup
BK_STOP 1654349555880
--------------------
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="Sudoku-COL-BN16"
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 Sudoku-COL-BN16, 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 r255-tall-165303542100199"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"
tar xzf /home/mcc/BenchKit/INPUTS/Sudoku-COL-BN16.tgz
mv Sudoku-COL-BN16 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 '
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 ;