About the Execution of ITS-Tools for Medical-PT-22
Execution Summary | |||||
Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
232.071 | 4727.00 | 9672.00 | 68.50 | TFTTFTFTTTFFTTTT | 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.r312-tall-165472282500611.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 itstools
Input is Medical-PT-22, examination is LTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r312-tall-165472282500611
=====================================================================
--------------------
preparation of the directory to be used:
/home/mcc/execution
total 3.5M
-rw-r--r-- 1 mcc users 7.7K Jun 7 17:34 CTLCardinality.txt
-rw-r--r-- 1 mcc users 81K Jun 7 17:34 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.0K Jun 7 17:32 CTLFireability.txt
-rw-r--r-- 1 mcc users 45K Jun 7 17:32 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K Jun 6 15:28 LTLCardinality.txt
-rw-r--r-- 1 mcc users 26K Jun 6 15:28 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.2K Jun 6 15:28 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Jun 6 15:28 LTLFireability.xml
-rw-r--r-- 1 mcc users 1 Jun 6 12:11 NewModel
-rw-r--r-- 1 mcc users 7.7K Jun 7 17:36 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 69K Jun 7 17:36 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 7.3K Jun 7 17:34 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 61K Jun 7 17:34 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Jun 6 15:28 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Jun 6 15:28 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Jun 6 12:11 equiv_col
-rw-r--r-- 1 mcc users 3 Jun 6 12:11 instance
-rw-r--r-- 1 mcc users 6 Jun 6 12:11 iscolored
-rw-r--r-- 1 mcc users 3.1M Jun 6 12:11 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 Medical-PT-22-LTLCardinality-00
FORMULA_NAME Medical-PT-22-LTLCardinality-01
FORMULA_NAME Medical-PT-22-LTLCardinality-02
FORMULA_NAME Medical-PT-22-LTLCardinality-03
FORMULA_NAME Medical-PT-22-LTLCardinality-04
FORMULA_NAME Medical-PT-22-LTLCardinality-05
FORMULA_NAME Medical-PT-22-LTLCardinality-06
FORMULA_NAME Medical-PT-22-LTLCardinality-07
FORMULA_NAME Medical-PT-22-LTLCardinality-08
FORMULA_NAME Medical-PT-22-LTLCardinality-09
FORMULA_NAME Medical-PT-22-LTLCardinality-10
FORMULA_NAME Medical-PT-22-LTLCardinality-11
FORMULA_NAME Medical-PT-22-LTLCardinality-12
FORMULA_NAME Medical-PT-22-LTLCardinality-13
FORMULA_NAME Medical-PT-22-LTLCardinality-14
FORMULA_NAME Medical-PT-22-LTLCardinality-15
=== Now, execution of the tool begins
BK_START 1654900511741
Running Version 202205111006
[2022-06-10 22:35:12] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, LTLCardinality, -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, 3600]
[2022-06-10 22:35:12] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2022-06-10 22:35:13] [INFO ] Load time of PNML (sax parser for PT used): 313 ms
[2022-06-10 22:35:13] [INFO ] Transformed 312 places.
[2022-06-10 22:35:13] [INFO ] Transformed 5431 transitions.
[2022-06-10 22:35:13] [INFO ] Parsed PT model containing 312 places and 5431 transitions in 461 ms.
Parsed 16 properties from file /home/mcc/execution/LTLCardinality.xml in 10 ms.
Working with output stream class java.io.PrintStream
Initial state reduction rules removed 4 formulas.
Deduced a syphon composed of 242 places in 24 ms
Reduce places removed 242 places and 5204 transitions.
Reduce places removed 1 places and 0 transitions.
Initial state reduction rules removed 1 formulas.
FORMULA Medical-PT-22-LTLCardinality-01 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Medical-PT-22-LTLCardinality-03 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Medical-PT-22-LTLCardinality-04 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Medical-PT-22-LTLCardinality-05 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Medical-PT-22-LTLCardinality-07 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Medical-PT-22-LTLCardinality-08 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Medical-PT-22-LTLCardinality-10 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Medical-PT-22-LTLCardinality-12 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Medical-PT-22-LTLCardinality-13 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Medical-PT-22-LTLCardinality-14 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Support contains 4 out of 69 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 69/69 places, 227/227 transitions.
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 0 with 2 rules applied. Total rules applied 2 place count 67 transition count 227
Applied a total of 2 rules in 14 ms. Remains 67 /69 variables (removed 2) and now considering 227/227 (removed 0) transitions.
[2022-06-10 22:35:13] [INFO ] Flow matrix only has 182 transitions (discarded 45 similar events)
// Phase 1: matrix 182 rows 67 cols
[2022-06-10 22:35:13] [INFO ] Computed 8 place invariants in 13 ms
[2022-06-10 22:35:13] [INFO ] Implicit Places using invariants in 196 ms returned []
[2022-06-10 22:35:13] [INFO ] Flow matrix only has 182 transitions (discarded 45 similar events)
// Phase 1: matrix 182 rows 67 cols
[2022-06-10 22:35:13] [INFO ] Computed 8 place invariants in 3 ms
[2022-06-10 22:35:13] [INFO ] State equation strengthened by 56 read => feed constraints.
[2022-06-10 22:35:13] [INFO ] Implicit Places using invariants and state equation in 178 ms returned []
Implicit Place search using SMT with State Equation took 401 ms to find 0 implicit places.
[2022-06-10 22:35:13] [INFO ] Flow matrix only has 182 transitions (discarded 45 similar events)
// Phase 1: matrix 182 rows 67 cols
[2022-06-10 22:35:13] [INFO ] Computed 8 place invariants in 2 ms
[2022-06-10 22:35:14] [INFO ] Dead Transitions using invariants and state equation in 119 ms found 0 transitions.
Starting structural reductions in LTL mode, iteration 1 : 67/69 places, 227/227 transitions.
Finished structural reductions, in 1 iterations. Remains : 67/69 places, 227/227 transitions.
Support contains 4 out of 67 places after structural reductions.
[2022-06-10 22:35:14] [INFO ] Initial state reduction rules for LTL removed 3 formulas.
[2022-06-10 22:35:14] [INFO ] Flatten gal took : 54 ms
FORMULA Medical-PT-22-LTLCardinality-09 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Medical-PT-22-LTLCardinality-02 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Medical-PT-22-LTLCardinality-00 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2022-06-10 22:35:14] [INFO ] Flatten gal took : 27 ms
[2022-06-10 22:35:14] [INFO ] Input system was already deterministic with 227 transitions.
Finished random walk after 247 steps, including 1 resets, run visited all 3 properties in 18 ms. (steps per millisecond=13 )
Computed a total of 6 stabilizing places and 33 stable transitions
Running Spot : cd /home/mcc/execution;'/home/mcc/BenchKit/bin//..//ltl2tgba' '--check=stutter' '--hoaf=tv' '-f' '!((!X(F(!(G(p0)||p0))) U G(p0)))'
Support contains 2 out of 67 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 67/67 places, 227/227 transitions.
Applied a total of 0 rules in 3 ms. Remains 67 /67 variables (removed 0) and now considering 227/227 (removed 0) transitions.
[2022-06-10 22:35:14] [INFO ] Flow matrix only has 182 transitions (discarded 45 similar events)
// Phase 1: matrix 182 rows 67 cols
[2022-06-10 22:35:14] [INFO ] Computed 8 place invariants in 1 ms
[2022-06-10 22:35:14] [INFO ] Implicit Places using invariants in 63 ms returned []
[2022-06-10 22:35:14] [INFO ] Flow matrix only has 182 transitions (discarded 45 similar events)
// Phase 1: matrix 182 rows 67 cols
[2022-06-10 22:35:14] [INFO ] Computed 8 place invariants in 2 ms
[2022-06-10 22:35:14] [INFO ] State equation strengthened by 56 read => feed constraints.
[2022-06-10 22:35:14] [INFO ] Implicit Places using invariants and state equation in 126 ms returned []
Implicit Place search using SMT with State Equation took 191 ms to find 0 implicit places.
[2022-06-10 22:35:14] [INFO ] Flow matrix only has 182 transitions (discarded 45 similar events)
// Phase 1: matrix 182 rows 67 cols
[2022-06-10 22:35:14] [INFO ] Computed 8 place invariants in 1 ms
[2022-06-10 22:35:14] [INFO ] Dead Transitions using invariants and state equation in 84 ms found 0 transitions.
Finished structural reductions, in 1 iterations. Remains : 67/67 places, 227/227 transitions.
Stuttering acceptance computed with spot in 194 ms :[true, (NOT p0), (NOT p0)]
Running random walk in product with property : Medical-PT-22-LTLCardinality-06 automaton TGBA Formula[mat=[[{ cond=true, acceptance={0} source=0 dest: 0}], [{ cond=true, acceptance={} source=1 dest: 2}], [{ cond=(NOT p0), acceptance={} source=2 dest: 0}, { cond=p0, acceptance={} source=2 dest: 2}]], initial=1, aps=[p0:(LEQ s21 s47)], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, complete, deterministic, no-univ-branch, unambiguous, semi-deterministic, stutter-sensitive, very-weak, weak, inherently-weak], stateDesc=[null, null, null][false, false, false]]
Entered a terminal (fully accepting) state of product in 136 steps with 0 reset in 4 ms.
FORMULA Medical-PT-22-LTLCardinality-06 FALSE TECHNIQUES STUTTER_TEST
Treatment of property Medical-PT-22-LTLCardinality-06 finished in 526 ms.
Running Spot : cd /home/mcc/execution;'/home/mcc/BenchKit/bin//..//ltl2tgba' '--check=stutter' '--hoaf=tv' '-f' '!(X(p0))'
Support contains 1 out of 67 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 67/67 places, 227/227 transitions.
Applied a total of 0 rules in 2 ms. Remains 67 /67 variables (removed 0) and now considering 227/227 (removed 0) transitions.
[2022-06-10 22:35:14] [INFO ] Flow matrix only has 182 transitions (discarded 45 similar events)
// Phase 1: matrix 182 rows 67 cols
[2022-06-10 22:35:14] [INFO ] Computed 8 place invariants in 1 ms
[2022-06-10 22:35:15] [INFO ] Implicit Places using invariants in 57 ms returned []
[2022-06-10 22:35:15] [INFO ] Flow matrix only has 182 transitions (discarded 45 similar events)
// Phase 1: matrix 182 rows 67 cols
[2022-06-10 22:35:15] [INFO ] Computed 8 place invariants in 1 ms
[2022-06-10 22:35:15] [INFO ] State equation strengthened by 56 read => feed constraints.
[2022-06-10 22:35:15] [INFO ] Implicit Places using invariants and state equation in 127 ms returned []
Implicit Place search using SMT with State Equation took 187 ms to find 0 implicit places.
[2022-06-10 22:35:15] [INFO ] Flow matrix only has 182 transitions (discarded 45 similar events)
// Phase 1: matrix 182 rows 67 cols
[2022-06-10 22:35:15] [INFO ] Computed 8 place invariants in 1 ms
[2022-06-10 22:35:15] [INFO ] Dead Transitions using invariants and state equation in 130 ms found 0 transitions.
Finished structural reductions, in 1 iterations. Remains : 67/67 places, 227/227 transitions.
Stuttering acceptance computed with spot in 209 ms :[(NOT p0), (NOT p0), true]
Running random walk in product with property : Medical-PT-22-LTLCardinality-11 automaton TGBA Formula[mat=[[{ cond=(NOT p0), acceptance={} source=0 dest: 2}], [{ cond=true, acceptance={} source=1 dest: 0}], [{ cond=true, acceptance={0} source=2 dest: 2}]], initial=1, aps=[p0:(LEQ s42 0)], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, deterministic, no-univ-branch, unambiguous, semi-deterministic, stutter-sensitive, terminal, very-weak, weak, inherently-weak], stateDesc=[null, null, null][false, false, false]]
Entered a terminal (fully accepting) state of product in 1 steps with 0 reset in 0 ms.
FORMULA Medical-PT-22-LTLCardinality-11 FALSE TECHNIQUES STUTTER_TEST
Treatment of property Medical-PT-22-LTLCardinality-11 finished in 546 ms.
Running Spot : cd /home/mcc/execution;'/home/mcc/BenchKit/bin//..//ltl2tgba' '--check=stutter' '--hoaf=tv' '-f' '!(F(X(X((F(p0)||p0)))))'
Support contains 1 out of 67 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 67/67 places, 227/227 transitions.
Applied a total of 0 rules in 4 ms. Remains 67 /67 variables (removed 0) and now considering 227/227 (removed 0) transitions.
[2022-06-10 22:35:15] [INFO ] Flow matrix only has 182 transitions (discarded 45 similar events)
// Phase 1: matrix 182 rows 67 cols
[2022-06-10 22:35:15] [INFO ] Computed 8 place invariants in 2 ms
[2022-06-10 22:35:15] [INFO ] Implicit Places using invariants in 59 ms returned []
[2022-06-10 22:35:15] [INFO ] Flow matrix only has 182 transitions (discarded 45 similar events)
// Phase 1: matrix 182 rows 67 cols
[2022-06-10 22:35:15] [INFO ] Computed 8 place invariants in 2 ms
[2022-06-10 22:35:15] [INFO ] State equation strengthened by 56 read => feed constraints.
[2022-06-10 22:35:15] [INFO ] Implicit Places using invariants and state equation in 129 ms returned []
Implicit Place search using SMT with State Equation took 189 ms to find 0 implicit places.
[2022-06-10 22:35:15] [INFO ] Flow matrix only has 182 transitions (discarded 45 similar events)
// Phase 1: matrix 182 rows 67 cols
[2022-06-10 22:35:15] [INFO ] Computed 8 place invariants in 1 ms
[2022-06-10 22:35:15] [INFO ] Dead Transitions using invariants and state equation in 84 ms found 0 transitions.
Finished structural reductions, in 1 iterations. Remains : 67/67 places, 227/227 transitions.
Stuttering acceptance computed with spot in 105 ms :[(NOT p0), (NOT p0), (NOT p0)]
Running random walk in product with property : Medical-PT-22-LTLCardinality-15 automaton TGBA Formula[mat=[[{ cond=(NOT p0), acceptance={0} source=0 dest: 0}], [{ cond=true, acceptance={} source=1 dest: 0}], [{ cond=true, acceptance={} source=2 dest: 1}]], initial=2, aps=[p0:(LEQ s10 0)], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, deterministic, no-univ-branch, unambiguous, semi-deterministic, stutter-sensitive, very-weak, weak, inherently-weak], stateDesc=[null, null, null][false, false, false]]
Product exploration explored 100000 steps with 33333 reset in 263 ms.
Product exploration explored 100000 steps with 33333 reset in 191 ms.
Computed a total of 6 stabilizing places and 33 stable transitions
Computed a total of 6 stabilizing places and 33 stable transitions
Knowledge obtained : [p0, (X (X p0))]
False Knowledge obtained : []
Property proved to be true thanks to knowledge :(X (X p0))
Knowledge based reduction with 2 factoid took 47 ms. Reduced automaton from 3 states, 3 edges and 1 AP to 1 states, 0 edges and 0 AP.
FORMULA Medical-PT-22-LTLCardinality-15 TRUE TECHNIQUES KNOWLEDGE
Treatment of property Medical-PT-22-LTLCardinality-15 finished in 903 ms.
All properties solved by simple procedures.
Total runtime 3499 ms.
BK_STOP 1654900516468
--------------------
content from stderr:
+ export LANG=C
+ LANG=C
+ export BINDIR=/home/mcc/BenchKit/bin//../
+ BINDIR=/home/mcc/BenchKit/bin//../
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ LTLCardinality = StateSpace ]]
+ /home/mcc/BenchKit/bin//..//runeclipse.sh /home/mcc/execution LTLCardinality -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
+ ulimit -s 65536
+ export PYTHONPATH=/usr/lib/python3.9/site-packages/
+ PYTHONPATH=/usr/lib/python3.9/site-packages/
+ export LD_LIBRARY_PATH=/usr/local/lib:
+ LD_LIBRARY_PATH=/usr/local/lib:
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202205111006.jar
+ VERSION=202205111006
+ echo 'Running Version 202205111006'
+ /home/mcc/BenchKit/bin//..//itstools/its-tools -data @none -pnfolder /home/mcc/execution -examination LTLCardinality -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 3600 -vmargs -Dosgi.locking=none -Declipse.stateSaveDelayInterval=-1 -Dosgi.configuration.area=@none -Xss128m -Xms40m -Xmx8192m
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="Medical-PT-22"
export BK_EXAMINATION="LTLCardinality"
export BK_TOOL="itstools"
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 itstools"
echo " Input is Medical-PT-22, examination is LTLCardinality"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r312-tall-165472282500611"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"
tar xzf /home/mcc/BenchKit/INPUTS/Medical-PT-22.tgz
mv Medical-PT-22 execution
cd execution
if [ "LTLCardinality" = "ReachabilityDeadlock" ] || [ "LTLCardinality" = "UpperBounds" ] || [ "LTLCardinality" = "QuasiLiveness" ] || [ "LTLCardinality" = "StableMarking" ] || [ "LTLCardinality" = "Liveness" ] || [ "LTLCardinality" = "OneSafe" ] || [ "LTLCardinality" = "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 [ "LTLCardinality" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "LTLCardinality" != "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 "LTLCardinality.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property LTLCardinality.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "LTLCardinality.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 [ "LTLCardinality" = "ReachabilityDeadlock" ] || [ "LTLCardinality" = "QuasiLiveness" ] || [ "LTLCardinality" = "StableMarking" ] || [ "LTLCardinality" = "Liveness" ] || [ "LTLCardinality" = "OneSafe" ] ; then
echo "FORMULA_NAME LTLCardinality"
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 ;