Execution Chart

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

Trace from the execution

Formatting '/mnt/tpsp/fkordon/mcc2022-input.r018-tajo-165245749000037.qcow2', fmt=qcow2 size=4294967296 backing_file='/mnt/tpsp/fkordon/mcc2022-input.qcow2' encryption=off cluster_size=65536 lazy_refcounts=off
Waiting for the VM to be ready (probing ssh)
...................
=====================================================================
Generated by BenchKit 2-4028
Executing tool gold2021
Input is ASLink-PT-04a, examination is QuasiLiveness
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r018-tajo-165245749000037
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 632K
-rw-r--r-- 1 mcc users 5.6K Apr 30 07:19 CTLCardinality.txt
-rw-r--r-- 1 mcc users 57K Apr 30 07:19 CTLCardinality.xml
-rw-r--r-- 1 mcc users 4.8K Apr 30 07:19 CTLFireability.txt
-rw-r--r-- 1 mcc users 42K Apr 30 07:19 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 10 09:33 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 3.2K May 9 06:59 LTLCardinality.txt
-rw-r--r-- 1 mcc users 21K May 9 06:59 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.1K May 9 06:59 LTLFireability.txt
-rw-r--r-- 1 mcc users 16K May 9 06:59 LTLFireability.xml
-rw-r--r-- 1 mcc users 1.6K May 9 06:59 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K May 9 06:59 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 10 09:33 equiv_col
-rw-r--r-- 1 mcc users 4 May 10 09:33 instance
-rw-r--r-- 1 mcc users 6 May 10 09:33 iscolored
-rw-r--r-- 1 mcc users 436K May 10 09:33 model.pnml

--------------------
content from stdout:

=== Data for post analysis generated by BenchKit (invocation template)

The expected result is a vector of booleans
BOOL_VECTOR

FORMULA_NAME QuasiLiveness

=== Now, execution of the tool begins

BK_START 1652803131906

Running Version 0
[2022-05-17 15:58:53] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, QuasiLiveness, -spotpath, /home/mcc/BenchKit/bin//..//ltlfilt, -z3path, /home/mcc/BenchKit/bin//..//z3/bin/z3, -yices2path, /home/mcc/BenchKit/bin//..//yices/bin/yices, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 1800]
[2022-05-17 15:58:53] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2022-05-17 15:58:53] [INFO ] Load time of PNML (sax parser for PT used): 103 ms
[2022-05-17 15:58:53] [INFO ] Transformed 1016 places.
[2022-05-17 15:58:53] [INFO ] Transformed 1554 transitions.
[2022-05-17 15:58:53] [INFO ] Found NUPN structural information;
[2022-05-17 15:58:53] [INFO ] Parsed PT model containing 1016 places and 1554 transitions in 150 ms.
Starting structural reductions, iteration 0 : 1016/1016 places, 1554/1554 transitions.
Ensure Unique test removed 16 places
Ensure Unique test removed 16 transitions
Reduce isomorphic transitions removed 16 transitions.
Discarding 8 places :
Implicit places reduction removed 8 places
Drop transitions removed 89 transitions
Trivial Post-agglo rules discarded 89 transitions
Performed 89 trivial Post agglomeration. Transition count delta: 89
Iterating post reduction 0 with 129 rules applied. Total rules applied 129 place count 992 transition count 1449
Reduce places removed 89 places and 0 transitions.
Iterating post reduction 1 with 89 rules applied. Total rules applied 218 place count 903 transition count 1449
Performed 89 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 89 Pre rules applied. Total rules applied 218 place count 903 transition count 1360
Deduced a syphon composed of 89 places in 13 ms
Ensure Unique test removed 35 places
Reduce places removed 124 places and 0 transitions.
Iterating global reduction 2 with 213 rules applied. Total rules applied 431 place count 779 transition count 1360
Drop transitions removed 1 transitions
Trivial Post-agglo rules discarded 1 transitions
Performed 1 trivial Post agglomeration. Transition count delta: 1
Iterating post reduction 2 with 1 rules applied. Total rules applied 432 place count 779 transition count 1359
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 3 with 1 rules applied. Total rules applied 433 place count 778 transition count 1359
Discarding 7 places :
Symmetric choice reduction at 4 with 7 rule applications. Total rules 440 place count 771 transition count 1324
Ensure Unique test removed 1 places
Iterating global reduction 4 with 8 rules applied. Total rules applied 448 place count 770 transition count 1324
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Discarding 1 places :
Implicit places reduction removed 1 places
Drop transitions removed 3 transitions
Trivial Post-agglo rules discarded 3 transitions
Performed 3 trivial Post agglomeration. Transition count delta: 3
Iterating post reduction 4 with 6 rules applied. Total rules applied 454 place count 769 transition count 1319
Reduce places removed 3 places and 0 transitions.
Iterating post reduction 5 with 3 rules applied. Total rules applied 457 place count 766 transition count 1319
Discarding 1 places :
Symmetric choice reduction at 6 with 1 rule applications. Total rules 458 place count 765 transition count 1311
Iterating global reduction 6 with 1 rules applied. Total rules applied 459 place count 765 transition count 1311
Discarding 1 places :
Symmetric choice reduction at 6 with 1 rule applications. Total rules 460 place count 764 transition count 1303
Iterating global reduction 6 with 1 rules applied. Total rules applied 461 place count 764 transition count 1303
Discarding 1 places :
Symmetric choice reduction at 6 with 1 rule applications. Total rules 462 place count 763 transition count 1295
Iterating global reduction 6 with 1 rules applied. Total rules applied 463 place count 763 transition count 1295
Discarding 1 places :
Symmetric choice reduction at 6 with 1 rule applications. Total rules 464 place count 762 transition count 1287
Iterating global reduction 6 with 1 rules applied. Total rules applied 465 place count 762 transition count 1287
Discarding 1 places :
Symmetric choice reduction at 6 with 1 rule applications. Total rules 466 place count 761 transition count 1279
Iterating global reduction 6 with 1 rules applied. Total rules applied 467 place count 761 transition count 1279
Discarding 1 places :
Symmetric choice reduction at 6 with 1 rule applications. Total rules 468 place count 760 transition count 1271
Iterating global reduction 6 with 1 rules applied. Total rules applied 469 place count 760 transition count 1271
Discarding 1 places :
Symmetric choice reduction at 6 with 1 rule applications. Total rules 470 place count 759 transition count 1263
Iterating global reduction 6 with 1 rules applied. Total rules applied 471 place count 759 transition count 1263
Discarding 1 places :
Symmetric choice reduction at 6 with 1 rule applications. Total rules 472 place count 758 transition count 1255
Iterating global reduction 6 with 1 rules applied. Total rules applied 473 place count 758 transition count 1255
Discarding 1 places :
Symmetric choice reduction at 6 with 1 rule applications. Total rules 474 place count 757 transition count 1247
Iterating global reduction 6 with 1 rules applied. Total rules applied 475 place count 757 transition count 1247
Discarding 1 places :
Symmetric choice reduction at 6 with 1 rule applications. Total rules 476 place count 756 transition count 1239
Iterating global reduction 6 with 1 rules applied. Total rules applied 477 place count 756 transition count 1239
Discarding 1 places :
Symmetric choice reduction at 6 with 1 rule applications. Total rules 478 place count 755 transition count 1231
Iterating global reduction 6 with 1 rules applied. Total rules applied 479 place count 755 transition count 1231
Discarding 1 places :
Symmetric choice reduction at 6 with 1 rule applications. Total rules 480 place count 754 transition count 1223
Iterating global reduction 6 with 1 rules applied. Total rules applied 481 place count 754 transition count 1223
Discarding 1 places :
Symmetric choice reduction at 6 with 1 rule applications. Total rules 482 place count 753 transition count 1215
Iterating global reduction 6 with 1 rules applied. Total rules applied 483 place count 753 transition count 1215
Discarding 1 places :
Symmetric choice reduction at 6 with 1 rule applications. Total rules 484 place count 752 transition count 1207
Iterating global reduction 6 with 1 rules applied. Total rules applied 485 place count 752 transition count 1207
Discarding 1 places :
Symmetric choice reduction at 6 with 1 rule applications. Total rules 486 place count 751 transition count 1199
Iterating global reduction 6 with 1 rules applied. Total rules applied 487 place count 751 transition count 1199
Discarding 1 places :
Symmetric choice reduction at 6 with 1 rule applications. Total rules 488 place count 750 transition count 1191
Iterating global reduction 6 with 1 rules applied. Total rules applied 489 place count 750 transition count 1191
Performed 28 Post agglomeration using F-continuation condition.Transition count delta: 28
Deduced a syphon composed of 28 places in 2 ms
Reduce places removed 28 places and 0 transitions.
Iterating global reduction 6 with 56 rules applied. Total rules applied 545 place count 722 transition count 1163
Applied a total of 545 rules in 617 ms. Remains 722 /1016 variables (removed 294) and now considering 1163/1554 (removed 391) transitions.
// Phase 1: matrix 1163 rows 722 cols
[2022-05-17 15:58:54] [INFO ] Computed 133 place invariants in 71 ms
[2022-05-17 15:58:54] [INFO ] Implicit Places using invariants in 663 ms returned [1, 19, 20, 22, 32, 50, 68, 148, 162, 163, 164, 165, 166, 184, 202, 282, 296, 297, 298, 299, 300, 318, 336, 416, 430, 431, 432, 433, 434, 452, 470, 550, 555, 566, 567, 568, 569, 570, 588, 590, 593, 611, 612, 613, 614, 626, 632, 638, 644, 650, 656, 662, 668, 674, 680, 686]
Discarding 56 places :
Implicit Place search using SMT only with invariants took 690 ms to find 56 implicit places.
// Phase 1: matrix 1163 rows 666 cols
[2022-05-17 15:58:54] [INFO ] Computed 77 place invariants in 33 ms
[2022-05-17 15:58:55] [INFO ] Dead Transitions using invariants and state equation in 508 ms returned []
Starting structural reductions, iteration 1 : 666/1016 places, 1163/1554 transitions.
Drop transitions removed 96 transitions
Trivial Post-agglo rules discarded 96 transitions
Performed 96 trivial Post agglomeration. Transition count delta: 96
Iterating post reduction 0 with 96 rules applied. Total rules applied 96 place count 666 transition count 1067
Reduce places removed 96 places and 0 transitions.
Iterating post reduction 1 with 96 rules applied. Total rules applied 192 place count 570 transition count 1067
Performed 35 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 35 Pre rules applied. Total rules applied 192 place count 570 transition count 1032
Deduced a syphon composed of 35 places in 2 ms
Ensure Unique test removed 1 places
Reduce places removed 36 places and 0 transitions.
Iterating global reduction 2 with 71 rules applied. Total rules applied 263 place count 534 transition count 1032
Discarding 13 places :
Implicit places reduction removed 13 places
Drop transitions removed 16 transitions
Trivial Post-agglo rules discarded 16 transitions
Performed 16 trivial Post agglomeration. Transition count delta: 16
Iterating post reduction 2 with 29 rules applied. Total rules applied 292 place count 521 transition count 1016
Reduce places removed 16 places and 0 transitions.
Iterating post reduction 3 with 16 rules applied. Total rules applied 308 place count 505 transition count 1016
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 4 with 1 Pre rules applied. Total rules applied 308 place count 505 transition count 1015
Deduced a syphon composed of 1 places in 1 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 4 with 2 rules applied. Total rules applied 310 place count 504 transition count 1015
Discarding 19 places :
Symmetric choice reduction at 4 with 19 rule applications. Total rules 329 place count 485 transition count 996
Iterating global reduction 4 with 19 rules applied. Total rules applied 348 place count 485 transition count 996
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 4 with 7 rules applied. Total rules applied 355 place count 485 transition count 989
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 5 with 1 Pre rules applied. Total rules applied 355 place count 485 transition count 988
Deduced a syphon composed of 1 places in 1 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 5 with 2 rules applied. Total rules applied 357 place count 484 transition count 988
Discarding 3 places :
Symmetric choice reduction at 5 with 3 rule applications. Total rules 360 place count 481 transition count 985
Iterating global reduction 5 with 3 rules applied. Total rules applied 363 place count 481 transition count 985
Discarding 1 places :
Symmetric choice reduction at 5 with 1 rule applications. Total rules 364 place count 480 transition count 984
Iterating global reduction 5 with 1 rules applied. Total rules applied 365 place count 480 transition count 984
Discarding 1 places :
Symmetric choice reduction at 5 with 1 rule applications. Total rules 366 place count 479 transition count 983
Iterating global reduction 5 with 1 rules applied. Total rules applied 367 place count 479 transition count 983
Performed 43 Post agglomeration using F-continuation condition.Transition count delta: 43
Deduced a syphon composed of 43 places in 1 ms
Reduce places removed 43 places and 0 transitions.
Iterating global reduction 5 with 86 rules applied. Total rules applied 453 place count 436 transition count 940
Applied a total of 453 rules in 77 ms. Remains 436 /666 variables (removed 230) and now considering 940/1163 (removed 223) transitions.
// Phase 1: matrix 940 rows 436 cols
[2022-05-17 15:58:55] [INFO ] Computed 63 place invariants in 14 ms
[2022-05-17 15:58:55] [INFO ] Implicit Places using invariants in 267 ms returned [73, 90, 96, 101, 160, 177, 183, 188, 190, 250, 267, 273, 278, 280, 340, 357, 363, 368, 370, 433]
Discarding 20 places :
Implicit Place search using SMT only with invariants took 271 ms to find 20 implicit places.
Starting structural reductions, iteration 2 : 416/1016 places, 940/1554 transitions.
Drop transitions removed 1 transitions
Trivial Post-agglo rules discarded 1 transitions
Performed 1 trivial Post agglomeration. Transition count delta: 1
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 416 transition count 939
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 1 with 1 rules applied. Total rules applied 2 place count 415 transition count 939
Discarding 8 places :
Symmetric choice reduction at 2 with 8 rule applications. Total rules 10 place count 407 transition count 931
Iterating global reduction 2 with 8 rules applied. Total rules applied 18 place count 407 transition count 931
Discarding 8 places :
Symmetric choice reduction at 2 with 8 rule applications. Total rules 26 place count 399 transition count 923
Iterating global reduction 2 with 8 rules applied. Total rules applied 34 place count 399 transition count 923
Discarding 4 places :
Symmetric choice reduction at 2 with 4 rule applications. Total rules 38 place count 395 transition count 919
Iterating global reduction 2 with 4 rules applied. Total rules applied 42 place count 395 transition count 919
Performed 8 Post agglomeration using F-continuation condition.Transition count delta: 8
Deduced a syphon composed of 8 places in 1 ms
Reduce places removed 8 places and 0 transitions.
Iterating global reduction 2 with 16 rules applied. Total rules applied 58 place count 387 transition count 911
Applied a total of 58 rules in 195 ms. Remains 387 /416 variables (removed 29) and now considering 911/940 (removed 29) transitions.
// Phase 1: matrix 911 rows 387 cols
[2022-05-17 15:58:56] [INFO ] Computed 43 place invariants in 16 ms
[2022-05-17 15:58:56] [INFO ] Implicit Places using invariants in 242 ms returned []
// Phase 1: matrix 911 rows 387 cols
[2022-05-17 15:58:56] [INFO ] Computed 43 place invariants in 11 ms
[2022-05-17 15:58:56] [INFO ] State equation strengthened by 4 read => feed constraints.
[2022-05-17 15:58:57] [INFO ] Implicit Places using invariants and state equation in 819 ms returned []
Implicit Place search using SMT with State Equation took 1069 ms to find 0 implicit places.
Finished structural reductions, in 3 iterations. Remains : 387/1016 places, 911/1554 transitions.
Discarding 48 transitions out of 911. Remains 863
[2022-05-17 15:58:57] [INFO ] Initial state test concluded for 1 properties.
Incomplete random walk after 10000 steps, including 155 resets, run finished after 280 ms. (steps per millisecond=35 ) properties (out of 862) seen :219
Running SMT prover for 643 properties.
// Phase 1: matrix 911 rows 387 cols
[2022-05-17 15:58:57] [INFO ] Computed 43 place invariants in 7 ms
[2022-05-17 15:59:01] [INFO ] [Real]Absence check using 9 positive place invariants in 2 ms returned sat
[2022-05-17 15:59:01] [INFO ] [Real]Absence check using 9 positive and 34 generalized place invariants in 11 ms returned sat
[2022-05-17 15:59:04] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2022-05-17 15:59:17] [INFO ] SMT Verify possible in real domain returnedunsat :0 sat :0 real:643
[2022-05-17 15:59:20] [INFO ] [Nat]Absence check using 9 positive place invariants in 9 ms returned sat
[2022-05-17 15:59:20] [INFO ] [Nat]Absence check using 9 positive and 34 generalized place invariants in 10 ms returned sat
[2022-05-17 15:59:23] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2022-05-17 15:59:42] [INFO ] [Nat]Absence check using state equation in 19220 ms returned unsat :4 sat :636
[2022-05-17 15:59:42] [INFO ] State equation strengthened by 4 read => feed constraints.
[2022-05-17 15:59:42] [WARNING] SMT solver failed with error :SMT solver raised an error when submitting script.... while checking expressions.
FORMULA QuasiLiveness FALSE TECHNIQUES RANDOM_WALK STRUCTURAL_REDUCTION TOPOLOGICAL INITIAL_STATE SAT_SMT

BK_STOP 1652803183100

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

+ export BINDIR=/home/mcc/BenchKit/bin//../
+ BINDIR=/home/mcc/BenchKit/bin//../
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ QuasiLiveness = StateSpace ]]
+ /home/mcc/BenchKit/bin//..//runeclipse.sh /home/mcc/execution QuasiLiveness -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//..//greatspn/ -order META -manyOrder -smt -timeout 1800
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
++ cut -d . -f 9
++ ls /home/mcc/BenchKit/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202104292328.jar
+ VERSION=0
+ echo 'Running Version 0'
+ /home/mcc/BenchKit/bin//..//itstools/its-tools -data /home/mcc/execution/workspace -pnfolder /home/mcc/execution -examination QuasiLiveness -spotpath /home/mcc/BenchKit/bin//..//ltlfilt -z3path /home/mcc/BenchKit/bin//..//z3/bin/z3 -yices2path /home/mcc/BenchKit/bin//..//yices/bin/yices -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//..//greatspn/ -order META -manyOrder -smt -timeout 1800 -vmargs -Dosgi.locking=none -Declipse.stateSaveDelayInterval=-1 -Dosgi.configuration.area=/tmp/.eclipse -Xss128m -Xms40m -Xmx16000m

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="ASLink-PT-04a"
export BK_EXAMINATION="QuasiLiveness"
export BK_TOOL="gold2021"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="1800"
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 gold2021"
echo " Input is ASLink-PT-04a, examination is QuasiLiveness"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r018-tajo-165245749000037"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/ASLink-PT-04a.tgz
mv ASLink-PT-04a execution
cd execution
if [ "QuasiLiveness" = "ReachabilityDeadlock" ] || [ "QuasiLiveness" = "UpperBounds" ] || [ "QuasiLiveness" = "QuasiLiveness" ] || [ "QuasiLiveness" = "StableMarking" ] || [ "QuasiLiveness" = "Liveness" ] || [ "QuasiLiveness" = "OneSafe" ] || [ "QuasiLiveness" = "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 [ "QuasiLiveness" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "QuasiLiveness" != "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 "QuasiLiveness.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property QuasiLiveness.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "QuasiLiveness.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 '' QuasiLiveness.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "QuasiLiveness" = "ReachabilityDeadlock" ] || [ "QuasiLiveness" = "QuasiLiveness" ] || [ "QuasiLiveness" = "StableMarking" ] || [ "QuasiLiveness" = "Liveness" ] || [ "QuasiLiveness" = "OneSafe" ] ; then
echo "FORMULA_NAME QuasiLiveness"
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 ;