Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2023-input.r544-tall-167987257700244.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2023-input.qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
..................................................................................................................
=====================================================================
Generated by BenchKit 2-5348
Executing tool gold2022
Input is PGCD-COL-D02N006, examination is Liveness
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r544-tall-167987257700244
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 512K
-rw-r--r-- 1 mcc users 6.9K Mar 23 15:24 CTLCardinality.txt
-rw-r--r-- 1 mcc users 78K Mar 23 15:24 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.1K Mar 23 15:21 CTLFireability.txt
-rw-r--r-- 1 mcc users 48K Mar 23 15:21 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.6K Mar 23 07:07 LTLCardinality.txt
-rw-r--r-- 1 mcc users 27K Mar 23 07:07 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.0K Mar 23 07:07 LTLFireability.txt
-rw-r--r-- 1 mcc users 16K Mar 23 07:07 LTLFireability.xml
-rw-r--r-- 1 mcc users 1 Mar 26 22:42 NewModel
-rw-r--r-- 1 mcc users 14K Mar 23 15:27 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 164K Mar 23 15:27 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 8.5K Mar 23 15:27 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 82K Mar 23 15:27 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Mar 23 07:07 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K Mar 23 07:07 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 26 22:42 equiv_pt
-rw-r--r-- 1 mcc users 8 Mar 26 22:42 instance
-rw-r--r-- 1 mcc users 5 Mar 26 22:42 iscolored
-rw-r--r-- 1 mcc users 16K Mar 26 22:42 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 Liveness

=== Now, execution of the tool begins

BK_START 1679951137215

Running Version 202205111006
[2023-03-27 21:05:38] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, Liveness, -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]
[2023-03-27 21:05:38] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-27 21:05:38] [INFO ] Detected file is not PT type :http://www.pnml.org/version-2009/grammar/symmetricnet
log4j:WARN No appenders could be found for logger (org.apache.axiom.locator.DefaultOMMetaFactoryLocator).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
[2023-03-27 21:05:38] [WARNING] Using fallBack plugin, rng conformance not checked
[2023-03-27 21:05:39] [INFO ] Load time of PNML (colored model parsed with PNMLFW) : 662 ms
[2023-03-27 21:05:39] [INFO ] Imported 3 HL places and 3 HL transitions for a total of 9 PT places and 9.0 transition bindings in 17 ms.
[2023-03-27 21:05:39] [INFO ] Built PT skeleton of HLPN with 3 places and 3 transitions 14 arcs in 4 ms.
[2023-03-27 21:05:39] [INFO ] Skeletonized 0 HLPN properties in 0 ms.
[2023-03-27 21:05:39] [INFO ] Unfolded HLPN to a Petri net with 9 places and 9 transitions 42 arcs in 4 ms.
[2023-03-27 21:05:39] [INFO ] Unfolded 0 HLPN properties in 0 ms.
[2023-03-27 21:05:39] [INFO ] Unfolded HLPN to a Petri net with 9 places and 9 transitions 42 arcs in 1 ms.
[2023-03-27 21:05:39] [INFO ] Unfolded 3 HLPN properties in 1 ms.
[2023-03-27 21:05:39] [INFO ] Built PT skeleton of HLPN with 3 places and 3 transitions 14 arcs in 0 ms.
[2023-03-27 21:05:39] [INFO ] Skeletonized 3 HLPN properties in 1 ms.
Computed a total of 0 stabilizing places and 0 stable transitions
Prefix of Interest using HLPN skeleton for deadlock discarded 0 places and 0 transitions.
Arc [0:1*[(MOD (ADD $x 1) 3)]] contains successor/predecessor on variables of sort CD
[2023-03-27 21:05:39] [INFO ] Unfolded HLPN to a Petri net with 9 places and 9 transitions 42 arcs in 2 ms.
[2023-03-27 21:05:39] [INFO ] Unfolded 3 HLPN properties in 0 ms.
Built sparse matrix representations for Structural reductions in 0 ms.17871KB memory used
Starting structural reductions in DEADLOCKS mode, iteration 0 : 9/9 places, 9/9 transitions.
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Applied a total of 0 rules in 8 ms. Remains 9 /9 variables (removed 0) and now considering 9/9 (removed 0) transitions.
// Phase 1: matrix 9 rows 9 cols
[2023-03-27 21:05:39] [INFO ] Computed 4 place invariants in 8 ms
[2023-03-27 21:05:39] [INFO ] Dead Transitions using invariants and state equation in 116 ms found 0 transitions.
Finished structural reductions, in 1 iterations. Remains : 9/9 places, 9/9 transitions.
Starting structural reductions in DEADLOCKS mode, iteration 0 : 9/9 places, 9/9 transitions.
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Applied a total of 0 rules in 1 ms. Remains 9 /9 variables (removed 0) and now considering 9/9 (removed 0) transitions.
// Phase 1: matrix 9 rows 9 cols
[2023-03-27 21:05:39] [INFO ] Computed 4 place invariants in 6 ms
[2023-03-27 21:05:39] [INFO ] Implicit Places using invariants in 33 ms returned []
// Phase 1: matrix 9 rows 9 cols
[2023-03-27 21:05:39] [INFO ] Computed 4 place invariants in 1 ms
[2023-03-27 21:05:39] [INFO ] State equation strengthened by 3 read => feed constraints.
[2023-03-27 21:05:39] [INFO ] Implicit Places using invariants and state equation in 45 ms returned []
Implicit Place search using SMT with State Equation took 80 ms to find 0 implicit places.
[2023-03-27 21:05:39] [INFO ] Redundant transitions in 0 ms returned []
// Phase 1: matrix 9 rows 9 cols
[2023-03-27 21:05:39] [INFO ] Computed 4 place invariants in 1 ms
[2023-03-27 21:05:39] [INFO ] Dead Transitions using invariants and state equation in 38 ms found 0 transitions.
Finished structural reductions, in 1 iterations. Remains : 9/9 places, 9/9 transitions.
Random walk for 1250005 steps, including 0 resets, run took 327 ms (no deadlock found). (steps per millisecond=3822 )
Random directed walk for 1250012 steps, including 0 resets, run took 254 ms (no deadlock found). (steps per millisecond=4921 )
// Phase 1: matrix 9 rows 9 cols
[2023-03-27 21:05:40] [INFO ] Computed 4 place invariants in 2 ms
[2023-03-27 21:05:40] [INFO ] [Real]Absence check using 2 positive place invariants in 4 ms returned sat
[2023-03-27 21:05:40] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 4 ms returned sat
[2023-03-27 21:05:40] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-27 21:05:40] [INFO ] [Real]Absence check using state equation in 12 ms returned sat
[2023-03-27 21:05:40] [INFO ] Solution in real domain found non-integer solution.
[2023-03-27 21:05:40] [INFO ] [Nat]Absence check using 2 positive place invariants in 2 ms returned sat
[2023-03-27 21:05:40] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 2 ms returned sat
[2023-03-27 21:05:40] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-27 21:05:40] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2023-03-27 21:05:40] [INFO ] State equation strengthened by 3 read => feed constraints.
[2023-03-27 21:05:40] [INFO ] [Nat]Added 3 Read/Feed constraints in 1 ms returned sat
[2023-03-27 21:05:40] [INFO ] Computed and/alt/rep : 3/6/3 causal constraints (skipped 0 transitions) in 6 ms.
[2023-03-27 21:05:40] [INFO ] Added : 1 causal constraints over 1 iterations in 13 ms. Result :sat
Attempting to minimize the solution found.
Minimization took 2 ms.
Parikh directed walk for 1800 steps, including 113 resets, run took 5 ms. (steps per millisecond=360 )
Random directed walk for 500000 steps, including 0 resets, run took 96 ms (no deadlock found). (steps per millisecond=5208 )
Random walk for 500001 steps, including 0 resets, run took 95 ms (no deadlock found). (steps per millisecond=5263 )
Random directed walk for 500000 steps, including 0 resets, run took 93 ms (no deadlock found). (steps per millisecond=5376 )
Random walk for 500003 steps, including 0 resets, run took 95 ms (no deadlock found). (steps per millisecond=5263 )
Starting structural reductions in DEADLOCKS mode, iteration 0 : 9/9 places, 9/9 transitions.
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Applied a total of 0 rules in 1 ms. Remains 9 /9 variables (removed 0) and now considering 9/9 (removed 0) transitions.
// Phase 1: matrix 9 rows 9 cols
[2023-03-27 21:05:40] [INFO ] Computed 4 place invariants in 1 ms
[2023-03-27 21:05:40] [INFO ] Implicit Places using invariants in 31 ms returned []
// Phase 1: matrix 9 rows 9 cols
[2023-03-27 21:05:40] [INFO ] Computed 4 place invariants in 0 ms
[2023-03-27 21:05:40] [INFO ] State equation strengthened by 3 read => feed constraints.
[2023-03-27 21:05:40] [INFO ] Implicit Places using invariants and state equation in 38 ms returned []
Implicit Place search using SMT with State Equation took 71 ms to find 0 implicit places.
[2023-03-27 21:05:40] [INFO ] Redundant transitions in 0 ms returned []
// Phase 1: matrix 9 rows 9 cols
[2023-03-27 21:05:40] [INFO ] Computed 4 place invariants in 1 ms
[2023-03-27 21:05:40] [INFO ] Dead Transitions using invariants and state equation in 27 ms found 0 transitions.
Finished structural reductions, in 1 iterations. Remains : 9/9 places, 9/9 transitions.
Random walk for 1250000 steps, including 0 resets, run took 263 ms (no deadlock found). (steps per millisecond=4752 )
Random directed walk for 1250004 steps, including 0 resets, run took 219 ms (no deadlock found). (steps per millisecond=5707 )
// Phase 1: matrix 9 rows 9 cols
[2023-03-27 21:05:41] [INFO ] Computed 4 place invariants in 1 ms
[2023-03-27 21:05:41] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-03-27 21:05:41] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2023-03-27 21:05:41] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-27 21:05:41] [INFO ] [Real]Absence check using state equation in 4 ms returned sat
[2023-03-27 21:05:41] [INFO ] Solution in real domain found non-integer solution.
[2023-03-27 21:05:41] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-03-27 21:05:41] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2023-03-27 21:05:41] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-27 21:05:41] [INFO ] [Nat]Absence check using state equation in 4 ms returned sat
[2023-03-27 21:05:41] [INFO ] State equation strengthened by 3 read => feed constraints.
[2023-03-27 21:05:41] [INFO ] [Nat]Added 3 Read/Feed constraints in 1 ms returned sat
[2023-03-27 21:05:41] [INFO ] Computed and/alt/rep : 3/6/3 causal constraints (skipped 0 transitions) in 1 ms.
[2023-03-27 21:05:41] [INFO ] Added : 1 causal constraints over 1 iterations in 4 ms. Result :sat
Attempting to minimize the solution found.
Minimization took 0 ms.
Parikh directed walk for 1800 steps, including 110 resets, run took 4 ms. (steps per millisecond=450 )
Random directed walk for 500002 steps, including 0 resets, run took 91 ms (no deadlock found). (steps per millisecond=5494 )
Random walk for 500001 steps, including 0 resets, run took 103 ms (no deadlock found). (steps per millisecond=4854 )
Random directed walk for 500001 steps, including 0 resets, run took 91 ms (no deadlock found). (steps per millisecond=5494 )
Random walk for 500010 steps, including 0 resets, run took 100 ms (no deadlock found). (steps per millisecond=5000 )
[2023-03-27 21:05:41] [INFO ] Flatten gal took : 15 ms
[2023-03-27 21:05:41] [INFO ] Unfolded HLPN to a Petri net with 9 places and 9 transitions 42 arcs in 1 ms.
[2023-03-27 21:05:41] [INFO ] Unfolded 3 HLPN properties in 0 ms.
Initial state reduction rules removed 2 formulas.
Finished random walk after 8 steps, including 0 resets, run visited all 1 properties in 4 ms. (steps per millisecond=2 )
Able to resolve query QuasiLiveness after proving 3 properties.
[2023-03-27 21:05:41] [INFO ] Flatten gal took : 3 ms
[2023-03-27 21:05:41] [INFO ] Flatten gal took : 3 ms
[2023-03-27 21:05:41] [INFO ] Time to serialize gal into /tmp/CTLFireability14597032263527936565.gal : 4 ms
[2023-03-27 21:05:41] [INFO ] Time to serialize properties into /tmp/CTLFireability13307030671439161765.ctl : 1 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202205111006/bin/its-ctl-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/CTLFireability14597032263527936565.gal' '-t' 'CGAL' '-ctl' '/tmp/CTLFireability13307030671439161765.ctl' '--gen-order' 'FOLLOW'

its-ctl command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202205111006/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -i /tmp/C...276
No direction supplied, using forward translation only.
Parsed 3 CTL formulae.
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
reachable,15670,0.047489,5796,2,608,5,6879,6,0,57,6745,0


Converting to forward existential form...Done !
original formula: AG(EF(((((p0_0>=1)&&(p1_0>=1))||((p0_1>=1)&&(p1_1>=1)))||((p0_2>=1)&&(p1_2>=1)))))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * !(E(TRUE U ((((p0_0>=1)&&(p1_0>=1))||((p0_1>=1)&&(p1_1>=1)))||((p0_2>=1)&&(p1_2>=1))))))] = ...160
Reverse transition relation is NOT exact ! Due to transitions Ax0, Ax1, Ax2, Intersection with reachable at each step enabled. (destroyed/reverse/intersec...172
(forward)formula 0,1,0.079156,6504,1,0,27,8043,39,11,515,7295,27
Formula is TRUE !

***************************************

original formula: AG(EF(((((p0_0>=3)&&(p2_0>=1))||((p0_1>=3)&&(p2_1>=1)))||((p0_2>=3)&&(p2_2>=1)))))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * !(E(TRUE U ((((p0_0>=3)&&(p2_0>=1))||((p0_1>=3)&&(p2_1>=1)))||((p0_2>=3)&&(p2_2>=1))))))] = ...160
(forward)formula 1,1,0.095464,6768,1,0,30,10105,40,13,517,10270,33
Formula is TRUE !

***************************************

original formula: AG(EF((((((p0_2>=1)&&(p1_2>=1))&&(p2_2>=1))||(((p0_0>=1)&&(p1_0>=1))&&(p2_0>=1)))||(((p0_1>=1)&&(p1_1>=1))&&(p2_1>=1)))))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * !(E(TRUE U (((((p0_2>=1)&&(p1_2>=1))&&(p2_2>=1))||(((p0_0>=1)&&(p1_0>=1))&&(p2_0>=1)))||(((p...199
(forward)formula 2,1,0.097959,7032,1,0,30,10106,41,13,519,10278,34
Formula is TRUE !

***************************************

Able to resolve query Liveness after proving 3 properties.
FORMULA Liveness TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Total runtime 3485 ms.

BK_STOP 1679951141812

--------------------
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
+ [[ Liveness = StateSpace ]]
+ /home/mcc/BenchKit/bin//..//runeclipse.sh /home/mcc/execution Liveness -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//..//greatspn/ -order META -manyOrder -smt -timeout 1800
+ 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 Liveness -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=@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="PGCD-COL-D02N006"
export BK_EXAMINATION="Liveness"
export BK_TOOL="gold2022"
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 2-5348"
echo " Executing tool gold2022"
echo " Input is PGCD-COL-D02N006, examination is Liveness"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r544-tall-167987257700244"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/PGCD-COL-D02N006.tgz
mv PGCD-COL-D02N006 execution
cd execution
if [ "Liveness" = "ReachabilityDeadlock" ] || [ "Liveness" = "UpperBounds" ] || [ "Liveness" = "QuasiLiveness" ] || [ "Liveness" = "StableMarking" ] || [ "Liveness" = "Liveness" ] || [ "Liveness" = "OneSafe" ] || [ "Liveness" = "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 [ "Liveness" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "Liveness" != "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 "Liveness.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property Liveness.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "Liveness.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 '' Liveness.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "Liveness" = "ReachabilityDeadlock" ] || [ "Liveness" = "QuasiLiveness" ] || [ "Liveness" = "StableMarking" ] || [ "Liveness" = "Liveness" ] || [ "Liveness" = "OneSafe" ] ; then
echo "FORMULA_NAME Liveness"
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 ;