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.r287-smll-165307357000087.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 gold2021
Input is UtilityControlRoom-PT-Z4T3N08, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r287-smll-165307357000087
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 2.8M
-rw-r--r-- 1 mcc users 41K Apr 29 17:49 CTLCardinality.txt
-rw-r--r-- 1 mcc users 205K Apr 29 17:49 CTLCardinality.xml
-rw-r--r-- 1 mcc users 61K Apr 29 17:47 CTLFireability.txt
-rw-r--r-- 1 mcc users 261K Apr 29 17:47 CTLFireability.xml
-rw-r--r-- 1 mcc users 19K May 9 09:20 LTLCardinality.txt
-rw-r--r-- 1 mcc users 64K May 9 09:20 LTLCardinality.xml
-rw-r--r-- 1 mcc users 49K May 9 09:20 LTLFireability.txt
-rw-r--r-- 1 mcc users 130K May 9 09:20 LTLFireability.xml
-rw-r--r-- 1 mcc users 105K Apr 29 18:01 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 493K Apr 29 18:01 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 223K Apr 29 17:57 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 853K Apr 29 17:57 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 4.8K May 9 09:20 UpperBounds.txt
-rw-r--r-- 1 mcc users 11K May 9 09:20 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 May 10 09:34 equiv_col
-rw-r--r-- 1 mcc users 8 May 10 09:34 instance
-rw-r--r-- 1 mcc users 6 May 10 09:34 iscolored
-rw-r--r-- 1 mcc users 255K May 10 09:34 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 UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-00
FORMULA_NAME UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-01
FORMULA_NAME UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-02
FORMULA_NAME UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-03
FORMULA_NAME UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-04
FORMULA_NAME UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-05
FORMULA_NAME UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-06
FORMULA_NAME UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-07
FORMULA_NAME UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-08
FORMULA_NAME UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-09
FORMULA_NAME UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-10
FORMULA_NAME UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-11
FORMULA_NAME UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-12
FORMULA_NAME UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-13
FORMULA_NAME UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-14
FORMULA_NAME UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-15

=== Now, execution of the tool begins

BK_START 1655069021102

Running Version 0
[2022-06-12 21:23:43] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityFireability, -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]
[2022-06-12 21:23:43] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2022-06-12 21:23:43] [INFO ] Load time of PNML (sax parser for PT used): 123 ms
[2022-06-12 21:23:43] [INFO ] Transformed 302 places.
[2022-06-12 21:23:43] [INFO ] Transformed 600 transitions.
[2022-06-12 21:23:43] [INFO ] Parsed PT model containing 302 places and 600 transitions in 192 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityFireability.xml in 103 ms.
Working with output stream class java.io.PrintStream
[2022-06-12 21:23:43] [INFO ] Reduced 24 identical enabling conditions.
[2022-06-12 21:23:43] [INFO ] Reduced 24 identical enabling conditions.
[2022-06-12 21:23:43] [INFO ] Reduced 24 identical enabling conditions.
[2022-06-12 21:23:43] [INFO ] Reduced 24 identical enabling conditions.
[2022-06-12 21:23:44] [INFO ] Reduced 24 identical enabling conditions.
[2022-06-12 21:23:44] [INFO ] Reduced 24 identical enabling conditions.
Ensure Unique test removed 128 transitions
Reduce redundant transitions removed 128 transitions.
FORMULA UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-02 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-03 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Incomplete random walk after 10000 steps, including 2 resets, run finished after 157 ms. (steps per millisecond=63 ) properties (out of 14) seen :9
FORMULA UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-15 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-12 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-11 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-09 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-07 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-06 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-04 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-01 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-00 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 1340 ms. (steps per millisecond=7 ) properties (out of 5) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 94 ms. (steps per millisecond=106 ) properties (out of 5) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 47 ms. (steps per millisecond=212 ) properties (out of 5) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 81 ms. (steps per millisecond=123 ) properties (out of 5) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 100 ms. (steps per millisecond=100 ) properties (out of 5) seen :0
Running SMT prover for 5 properties.
// Phase 1: matrix 472 rows 302 cols
[2022-06-12 21:23:45] [INFO ] Computed 19 place invariants in 23 ms
[2022-06-12 21:23:46] [INFO ] [Real]Absence check using 19 positive place invariants in 20 ms returned sat
[2022-06-12 21:23:46] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2022-06-12 21:23:46] [INFO ] [Real]Absence check using state equation in 348 ms returned sat
[2022-06-12 21:23:46] [INFO ] Computed and/alt/rep : 432/648/432 causal constraints (skipped 32 transitions) in 81 ms.
[2022-06-12 21:23:47] [INFO ] Solution in real domain found non-integer solution.
[2022-06-12 21:23:47] [INFO ] [Nat]Absence check using 19 positive place invariants in 27 ms returned sat
[2022-06-12 21:23:47] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2022-06-12 21:23:47] [INFO ] [Nat]Absence check using state equation in 281 ms returned sat
[2022-06-12 21:23:47] [INFO ] Computed and/alt/rep : 432/648/432 causal constraints (skipped 32 transitions) in 53 ms.
[2022-06-12 21:23:50] [INFO ] Added : 258 causal constraints over 52 iterations in 2746 ms. Result :sat
Attempting to minimize the solution found.
Minimization took 10 ms.
[2022-06-12 21:23:50] [INFO ] [Real]Absence check using 19 positive place invariants in 7 ms returned unsat
[2022-06-12 21:23:50] [INFO ] [Real]Absence check using 19 positive place invariants in 7 ms returned unsat
[2022-06-12 21:23:50] [INFO ] [Real]Absence check using 19 positive place invariants in 16 ms returned sat
[2022-06-12 21:23:50] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2022-06-12 21:23:50] [INFO ] [Real]Absence check using state equation in 277 ms returned sat
[2022-06-12 21:23:50] [INFO ] Solution in real domain found non-integer solution.
[2022-06-12 21:23:51] [INFO ] [Nat]Absence check using 19 positive place invariants in 22 ms returned sat
[2022-06-12 21:23:51] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2022-06-12 21:23:51] [INFO ] [Nat]Absence check using state equation in 307 ms returned sat
[2022-06-12 21:23:51] [INFO ] Computed and/alt/rep : 432/648/432 causal constraints (skipped 32 transitions) in 61 ms.
[2022-06-12 21:23:52] [INFO ] Added : 206 causal constraints over 42 iterations in 1585 ms. Result :sat
Attempting to minimize the solution found.
Minimization took 5 ms.
FORMULA UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-13 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-10 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-05 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
Fused 5 Parikh solutions to 2 different solutions.
Incomplete Parikh walk after 90300 steps, including 467 resets, run finished after 358 ms. (steps per millisecond=252 ) properties (out of 2) seen :0 could not realise parikh vector
Incomplete Parikh walk after 70600 steps, including 432 resets, run finished after 355 ms. (steps per millisecond=198 ) properties (out of 2) seen :1 could not realise parikh vector
FORMULA UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-14 TRUE TECHNIQUES TOPOLOGICAL PARIKH_WALK
Support contains 18 out of 302 places. Attempting structural reductions.
Starting structural reductions, iteration 0 : 302/302 places, 472/472 transitions.
Performed 121 Post agglomeration using F-continuation condition.Transition count delta: 121
Iterating post reduction 0 with 121 rules applied. Total rules applied 121 place count 302 transition count 351
Reduce places removed 121 places and 0 transitions.
Ensure Unique test removed 30 transitions
Reduce isomorphic transitions removed 30 transitions.
Iterating post reduction 1 with 151 rules applied. Total rules applied 272 place count 181 transition count 321
Performed 29 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 29 Pre rules applied. Total rules applied 272 place count 181 transition count 292
Deduced a syphon composed of 29 places in 4 ms
Reduce places removed 29 places and 0 transitions.
Iterating global reduction 2 with 58 rules applied. Total rules applied 330 place count 152 transition count 292
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 333 place count 149 transition count 289
Iterating global reduction 2 with 3 rules applied. Total rules applied 336 place count 149 transition count 289
Performed 3 Post agglomeration using F-continuation condition.Transition count delta: 3
Deduced a syphon composed of 3 places in 1 ms
Reduce places removed 3 places and 0 transitions.
Iterating global reduction 2 with 6 rules applied. Total rules applied 342 place count 146 transition count 286
Performed 5 Post agglomeration using F-continuation condition.Transition count delta: 5
Deduced a syphon composed of 5 places in 1 ms
Reduce places removed 5 places and 0 transitions.
Iterating global reduction 2 with 10 rules applied. Total rules applied 352 place count 141 transition count 281
Drop transitions removed 2 transitions
Redundant transition composition rules discarded 2 transitions
Iterating global reduction 2 with 2 rules applied. Total rules applied 354 place count 141 transition count 279
Free-agglomeration rule applied 20 times.
Iterating global reduction 2 with 20 rules applied. Total rules applied 374 place count 141 transition count 259
Reduce places removed 20 places and 0 transitions.
Ensure Unique test removed 24 transitions
Reduce isomorphic transitions removed 24 transitions.
Iterating post reduction 2 with 44 rules applied. Total rules applied 418 place count 121 transition count 235
Free-agglomeration rule (complex) applied 24 times.
Iterating global reduction 3 with 24 rules applied. Total rules applied 442 place count 121 transition count 211
Reduce places removed 24 places and 0 transitions.
Iterating post reduction 3 with 24 rules applied. Total rules applied 466 place count 97 transition count 211
Partial Free-agglomeration rule applied 6 times.
Drop transitions removed 6 transitions
Iterating global reduction 4 with 6 rules applied. Total rules applied 472 place count 97 transition count 211
Applied a total of 472 rules in 163 ms. Remains 97 /302 variables (removed 205) and now considering 211/472 (removed 261) transitions.
Finished structural reductions, in 1 iterations. Remains : 97/302 places, 211/472 transitions.
[2022-06-12 21:23:54] [INFO ] Flatten gal took : 84 ms
[2022-06-12 21:23:54] [INFO ] Flatten gal took : 30 ms
[2022-06-12 21:23:54] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality1645006869403618831.gal : 18 ms
[2022-06-12 21:23:54] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality3220057519972512908.prop : 1 ms
Invoking ITS tools like this :CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-reach-linux64, --gc-threshold, 2000000, --quiet, -i, /tmp/ReachabilityCardinality1645006869403618831.gal, -t, CGAL, -reachable-file, /tmp/ReachabilityCardinality3220057519972512908.prop, --nowitness, --gen-order, FOLLOW], workingDir=/home/mcc/execution]

its-reach command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-reach-linux64 --gc-threshold 2000000 --quiet -i /tmp/ReachabilityCardinality1645006869403618831.gal -t CGAL -reachable-file /tmp/ReachabilityCardinality3220057519972512908.prop --nowitness --gen-order FOLLOW
Loading property file /tmp/ReachabilityCardinality3220057519972512908.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 2
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :2 after 152
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :152 after 156
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :156 after 193
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :193 after 1060
Reachability property UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-08 is true.
FORMULA UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-08 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
Found states matching all0 target predicate
Will report total states built up to this point. Computation was interrupted after 65 fixpoint passes
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
petri\_inst\_inst,5452,0.081254,6144,2,474,11,4208,6,0,602,1634,0
Total reachable state count : 5452

Verifying 1 reachability properties.
Reachability property UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-08 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
UtilityControlRoom-PT-Z4T3N08-ReachabilityFireability-08,1,0.084765,6144,2,98,11,4208,7,0,640,1634,0
All properties solved without resorting to model-checking.

BK_STOP 1655069035726

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

+ export BINDIR=/home/mcc/BenchKit/bin//../
+ BINDIR=/home/mcc/BenchKit/bin//../
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ ReachabilityFireability = StateSpace ]]
+ /home/mcc/BenchKit/bin//..//runeclipse.sh /home/mcc/execution ReachabilityFireability -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
+ 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 ReachabilityFireability -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=/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="UtilityControlRoom-PT-Z4T3N08"
export BK_EXAMINATION="ReachabilityFireability"
export BK_TOOL="gold2021"
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 gold2021"
echo " Input is UtilityControlRoom-PT-Z4T3N08, 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 r287-smll-165307357000087"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/UtilityControlRoom-PT-Z4T3N08.tgz
mv UtilityControlRoom-PT-Z4T3N08 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 ;