fond
Model Checking Contest 2018
8th edition, Bratislava, Slovakia, June 26, 2018
Execution of r246-blw7-152732548300105
Last Updated
June 26, 2018

About the Execution of Irma.full for GlobalResAllocation-COL-05

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
1530.140 304750.00 387783.00 553.40 ???????????????? normal

Execution Chart

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

Trace from the execution

Waiting for the VM to be ready (probing ssh)
..................
/home/mcc/execution
total 200K
-rw-r--r-- 1 mcc users 3.8K May 15 18:54 CTLCardinality.txt
-rw-r--r-- 1 mcc users 18K May 15 18:54 CTLCardinality.xml
-rw-r--r-- 1 mcc users 2.8K May 15 18:54 CTLFireability.txt
-rw-r--r-- 1 mcc users 17K May 15 18:54 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K May 15 18:50 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.0K May 15 18:50 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 2.7K May 26 09:26 LTLCardinality.txt
-rw-r--r-- 1 mcc users 11K May 26 09:26 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.1K May 26 09:26 LTLFireability.txt
-rw-r--r-- 1 mcc users 9.9K May 26 09:26 LTLFireability.xml
-rw-r--r-- 1 mcc users 4.7K May 15 18:54 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 22K May 15 18:54 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 117 May 15 18:54 ReachabilityDeadlock.txt
-rw-r--r-- 1 mcc users 355 May 15 18:54 ReachabilityDeadlock.xml
-rw-r--r-- 1 mcc users 2.9K May 15 18:54 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 16K May 15 18:54 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.9K May 15 18:54 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.9K May 15 18:54 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 May 15 18:50 equiv_pt
-rw-r--r-- 1 mcc users 3 May 15 18:50 instance
-rw-r--r-- 1 mcc users 5 May 15 18:50 iscolored
-rw-r--r-- 1 mcc users 28K May 15 18:50 model.pnml
=====================================================================
Generated by BenchKit 2-3637
Executing tool irma4mcc-full
Input is GlobalResAllocation-COL-05, examination is LTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r246-blw7-152732548300105
=====================================================================


--------------------
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 GlobalResAllocation-COL-05-LTLCardinality-00
FORMULA_NAME GlobalResAllocation-COL-05-LTLCardinality-01
FORMULA_NAME GlobalResAllocation-COL-05-LTLCardinality-02
FORMULA_NAME GlobalResAllocation-COL-05-LTLCardinality-03
FORMULA_NAME GlobalResAllocation-COL-05-LTLCardinality-04
FORMULA_NAME GlobalResAllocation-COL-05-LTLCardinality-05
FORMULA_NAME GlobalResAllocation-COL-05-LTLCardinality-06
FORMULA_NAME GlobalResAllocation-COL-05-LTLCardinality-07
FORMULA_NAME GlobalResAllocation-COL-05-LTLCardinality-08
FORMULA_NAME GlobalResAllocation-COL-05-LTLCardinality-09
FORMULA_NAME GlobalResAllocation-COL-05-LTLCardinality-10
FORMULA_NAME GlobalResAllocation-COL-05-LTLCardinality-11
FORMULA_NAME GlobalResAllocation-COL-05-LTLCardinality-12
FORMULA_NAME GlobalResAllocation-COL-05-LTLCardinality-13
FORMULA_NAME GlobalResAllocation-COL-05-LTLCardinality-14
FORMULA_NAME GlobalResAllocation-COL-05-LTLCardinality-15

=== Now, execution of the tool begins

BK_START 1527931260144


BK_STOP 1527931564894

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

Prefix is 65b80f64.
Reading known information in /usr/share/mcc4mcc/65b80f64-known.json.
Reading learned information in /usr/share/mcc4mcc/65b80f64-learned.json.
Reading value translations in /usr/share/mcc4mcc/65b80f64-values.json.
Using directory /home/mcc/execution for input, as it contains a model.pnml file.
Using GlobalResAllocation-COL-05 as instance name.
Using GlobalResAllocation as model name.
Using algorithm or tool bmdt.
Model characteristics are: {'Examination': 'LTLCardinality', 'Place/Transition': True, 'Colored': True, 'Relative-Time': 1, 'Relative-Memory': 1, 'Ordinary': False, 'Simple Free Choice': False, 'Extended Free Choice': False, 'State Machine': False, 'Marked Graph': False, 'Connected': True, 'Strongly Connected': True, 'Source Place': False, 'Sink Place': False, 'Source Transition': False, 'Sink Transition': False, 'Loop Free': True, 'Conservative': False, 'Sub-Conservative': False, 'Nested Units': False, 'Safe': False, 'Deadlock': False, 'Reversible': None, 'Quasi Live': True, 'Live': True}.
Known tools are: [{'Time': 1614954, 'Memory': 1496.1, 'Tool': 'lola'}, {'Time': 1746290, 'Memory': 1307.88, 'Tool': 'lola'}].
Learned tools are: [{'Tool': 'gspn'}].
LTLCardinality lola GlobalResAllocation-COL-05...

Time: 3600 - MCC
----- Start make prepare stdout -----
----- Start make prepare stderr -----
===========================================================================================
GlobalResAllocation-COL-05: translating COL Petri net model.pnml into LoLA format
===========================================================================================
translating COL Petri net complete
checking for too many tokens
===========================================================================================
GlobalResAllocation-COL-05: translating COL formula LTLCardinality into LoLA format
===========================================================================================
translating formula complete
----- Start make result stderr -----
----- Start make result stdout -----
LTLCardinality @ GlobalResAllocation-COL-05 @ 3458 seconds
Makefile:222: recipe for target 'verify' failed
make: [verify] Error 134 (ignored)
----- Start make result stderr -----
----- Start make result stdout -----
lola: LoLA will run for 3458 seconds at most (--timelimit)
lola: NET
lola: reading net from model.pnml.lola
lola: finished parsing
lola: closed net file model.pnml.lola
lola: 56180/65536 symbol table entries, 38797 collisions
lola: preprocessing...
lola: finding significant places
lola: 75 places, 56105 transitions, 55 significant places
lola: computing forward-conflicting sets
lola: computing back-conflicting sets
lola: 2220 transition conflict sets
lola: TASK
lola: reading formula from GlobalResAllocation-COL-05-LTLCardinality.task
lola: A ((F (G ((1 <= p70 + p71 + p72 + p73 + p74))) U F (G ((p0 + p1 + p2 + p3 + p4 <= p70 + p71 + p72 + p73 + p74))))) : A (F ((p70 + p71 + p72 + p73 + p74 <= p58 + p20 + p21 + p22 + p23 + p24 + p25 + p26 + p27 + p28 + p57 + p30 + p31 + p32 + p33 + p34 + p35 + p36 + p37 + p38 + p56 + p40 + p41 + p42 + p43 + p44 + p45 + p46 + p47 + p48 + p55 + p50 + p51 + p52 + p53 + p54 + p49 + p39 + p29 + p59 + p60 + p61 + p62 + p63 + p64 + p65 + p66 + p67 + p68 + p69))) : A (F (X (((1 <= p15 + p16 + p17 + p18 + p19) U (3 <= p58 + p20 + p21 + p22 + p23 + p24 + p25 + p26 + p27 + p28 + p57 + p30 + p31 + p32 + p33 + p34 + p35 + p36 + p37 + p38 + p56 + p40 + p41 + p42 + p43 + p44 + p45 + p46 + p47 + p48 + p55 + p50 + p51 + p52 + p53 + p54 + p49 + p39 + p29 + p59 + p60 + p61 + p62 + p63 + p64 + p65 + p66 + p67 + p68 + p69))))) : A ((X (G ((3 <= p5 + p6 + p7 + p8 + p9 + p10 + p11 + p12 + p13 + p14))) U X (X ((2 <= p5 + p6 + p7 + p8 + p9 + p10 + p11 + p12 + p13 + p14))))) : A (F ((G ((2 <= p0 + p1 + p2 + p3 + p4)) U X ((3 <= p15 + p16 + p17 + p18 + p19))))) : A (G (F (F (X ((p5 + p6 + p7 + p8 + p9 + p10 + p11 + p12 + p13 + p14 <= p15 + p16 + p17 + p18 + p19)))))) : A ((p15 + p16 + p17 + p18 + p19 <= p58 + p20 + p21 + p22 + p23 + p24 + p25 + p26 + p27 + p28 + p57 + p30 + p31 + p32 + p33 + p34 + p35 + p36 + p37 + p38 + p56 + p40 + p41 + p42 + p43 + p44 + p45 + p46 + p47 + p48 + p55 + p50 + p51 + p52 + p53 + p54 + p49 + p39 + p29 + p59 + p60 + p61 + p62 + p63 + p64 + p65 + p66 + p67 + p68 + p69)) : A ((p70 + p71 + p72 + p73 + p74 <= p0 + p1 + p2 + p3 + p4)) : A (((p58 + p20 + p21 + p22 + p23 + p24 + p25 + p26 + p27 + p28 + p57 + p30 + p31 + p32 + p33 + p34 + p35 + p36 + p37 + p38 + p56 + p40 + p41 + p42 + p43 + p44 + p45 + p46 + p47 + p48 + p55 + p50 + p51 + p52 + p53 + p54 + p49 + p39 + p29 + p59 + p60 + p61 + p62 + p63 + p64 + p65 + p66 + p67 + p68 + p69 <= p0 + p1 + p2 + p3 + p4) U G (X ((p15 + p16 + p17 + p18 + p19 <= p0 + p1 + p2 + p3 + p4))))) : A (G ((3 <= p0 + p1 + p2 + p3 + p4))) : A ((X (F ((p0 + p1 + p2 + p3 + p4 <= p15 + p16 + p17 + p18 + p19))) U G (F ((2 <= p70 + p71 + p72 + p73 + p74))))) : A ((p70 + p71 + p72 + p73 + p74 <= p15 + p16 + p17 + p18 + p19)) : A (G (F ((p0 + p1 + p2 + p3 + p4 <= p58 + p20 + p21 + p22 + p23 + p24 + p25 + p26 + p27 + p28 + p57 + p30 + p31 + p32 + p33 + p34 + p35 + p36 + p37 + p38 + p56 + p40 + p41 + p42 + p43 + p44 + p45 + p46 + p47 + p48 + p55 + p50 + p51 + p52 + p53 + p54 + p49 + p39 + p29 + p59 + p60 + p61 + p62 + p63 + p64 + p65 + p66 + p67 + p68 + p69)))) : A (G ((X ((p15 + p16 + p17 + p18 + p19 <= p70 + p71 + p72 + p73 + p74)) U (1 <= p70 + p71 + p72 + p73 + p74)))) : A ((p0 + p1 + p2 + p3 + p4 <= p15 + p16 + p17 + p18 + p19)) : A ((p15 + p16 + p17 + p18 + p19 <= p58 + p20 + p21 + p22 + p23 + p24 + p25 + p26 + p27 + p28 + p57 + p30 + p31 + p32 + p33 + p34 + p35 + p36 + p37 + p38 + p56 + p40 + p41 + p42 + p43 + p44 + p45 + p46 + p47 + p48 + p55 + p50 + p51 + p52 + p53 + p54 + p49 + p39 + p29 + p59 + p60 + p61 + p62 + p63 + p64 + p65 + p66 + p67 + p68 + p69))
lola: computing a collection of formulas
lola: RUNNING
lola: subprocess 0 will run for 215 seconds at most (--localtimelimit=-1)
lola: ========================================
lola: ...considering subproblem: A ((F (G ((1 <= p70 + p71 + p72 + p73 + p74))) U F (G ((p0 + p1 + p2 + p3 + p4 <= p70 + p71 + p72 + p73 + p74)))))
lola: ========================================
lola: SUBTASK
lola: checking LTL
lola: transforming LTL-Formula into a B\xfcchi-Automaton
lola: processed formula: A ((F (G ((1 <= p70 + p71 + p72 + p73 + p74))) U F (G ((p0 + p1 + p2 + p3 + p4 <= p70 + p71 + p72 + p73 + p74)))))
lola: processed formula: A ((F (G ((1 <= p70 + p71 + p72 + p73 + p74))) U F (G ((p0 + p1 + p2 + p3 + p4 <= p70 + p71 + p72 + p73 + p74)))))
lola: processed formula length: 114
lola: 0 rewrites
lola: formula mentions 0 of 75 places; total mentions: 0
lola: closed formula file GlobalResAllocation-COL-05-LTLCardinality.task
lola: the resulting B\xfcchi automaton has 2 states
lola: STORE
lola: using a bit-perfect encoder (--encoder=bit)
lola: using 224 bytes per marking, with 30 unused bits
lola: using a prefix tree store (--store=prefix)
lola: using ltl preserving stubborn set method (--stubborn)
lola: SEARCH
lola: RUNNING
lola: 25790 markings, 61655 edges, 5158 markings/sec, 0 secs
lola: 53901 markings, 136800 edges, 5622 markings/sec, 5 secs
lola: 82335 markings, 217033 edges, 5687 markings/sec, 10 secs
lola: 110555 markings, 300075 edges, 5644 markings/sec, 15 secs
lola: 138826 markings, 385242 edges, 5654 markings/sec, 20 secs
lola: 167096 markings, 471745 edges, 5654 markings/sec, 25 secs
lola: 195330 markings, 560249 edges, 5647 markings/sec, 30 secs
lola: 223571 markings, 649940 edges, 5648 markings/sec, 35 secs
lola: 251913 markings, 741538 edges, 5668 markings/sec, 40 secs
lola: 280238 markings, 833156 edges, 5665 markings/sec, 45 secs
lola: 308518 markings, 926353 edges, 5656 markings/sec, 50 secs
lola: 336753 markings, 1020774 edges, 5647 markings/sec, 55 secs
lola: 365026 markings, 1116555 edges, 5655 markings/sec, 60 secs
lola: 393297 markings, 1212626 edges, 5654 markings/sec, 65 secs
lola: 421628 markings, 1309807 edges, 5666 markings/sec, 70 secs
lola: 449906 markings, 1407196 edges, 5656 markings/sec, 75 secs
lola: 478165 markings, 1506098 edges, 5652 markings/sec, 80 secs
lola: 506258 markings, 1603907 edges, 5619 markings/sec, 85 secs
lola: 534406 markings, 1704101 edges, 5630 markings/sec, 90 secs
lola: 562552 markings, 1805578 edges, 5629 markings/sec, 95 secs
lola: 590721 markings, 1906921 edges, 5634 markings/sec, 100 secs
lola: 618917 markings, 2008979 edges, 5639 markings/sec, 105 secs
lola: 647100 markings, 2112403 edges, 5637 markings/sec, 110 secs
lola: 675013 markings, 2214580 edges, 5583 markings/sec, 115 secs
lola: 703087 markings, 2317505 edges, 5615 markings/sec, 120 secs
lola: 731761 markings, 2423376 edges, 5735 markings/sec, 125 secs
lola: 760440 markings, 2531496 edges, 5736 markings/sec, 130 secs
lola: 789127 markings, 2638999 edges, 5737 markings/sec, 135 secs
lola: 817713 markings, 2747240 edges, 5717 markings/sec, 140 secs
lola: 846341 markings, 2858039 edges, 5726 markings/sec, 145 secs
lola: 875031 markings, 2967920 edges, 5738 markings/sec, 150 secs
lola: 903694 markings, 3077808 edges, 5733 markings/sec, 155 secs
lola: 932389 markings, 3186040 edges, 5739 markings/sec, 160 secs
lola: 960780 markings, 3295683 edges, 5678 markings/sec, 165 secs
lola: 989011 markings, 3405525 edges, 5646 markings/sec, 170 secs
lola: 1016907 markings, 3514791 edges, 5579 markings/sec, 175 secs
lola: 1044353 markings, 3622762 edges, 5489 markings/sec, 180 secs
lola: 1071540 markings, 3730655 edges, 5437 markings/sec, 185 secs
lola: 1098489 markings, 3837030 edges, 5390 markings/sec, 190 secs
lola: 1125483 markings, 3944038 edges, 5399 markings/sec, 195 secs
lola: 1152074 markings, 4050916 edges, 5318 markings/sec, 200 secs
lola: 1178882 markings, 4158506 edges, 5362 markings/sec, 205 secs
lola: local time limit reached - aborting
lola: Child process aborted or communication problem between parent and child process
terminate called after throwing an instance of 'std::runtime_error'
what(): parse error at position 0: unexpected character, last read: '\ufffd'
Aborted (core dumped)
FORMULA GlobalResAllocation-COL-05-LTLCardinality-0 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA GlobalResAllocation-COL-05-LTLCardinality-1 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA GlobalResAllocation-COL-05-LTLCardinality-2 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA GlobalResAllocation-COL-05-LTLCardinality-3 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA GlobalResAllocation-COL-05-LTLCardinality-4 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA GlobalResAllocation-COL-05-LTLCardinality-5 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA GlobalResAllocation-COL-05-LTLCardinality-6 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA GlobalResAllocation-COL-05-LTLCardinality-7 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA GlobalResAllocation-COL-05-LTLCardinality-8 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA GlobalResAllocation-COL-05-LTLCardinality-9 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA GlobalResAllocation-COL-05-LTLCardinality-10 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA GlobalResAllocation-COL-05-LTLCardinality-11 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA GlobalResAllocation-COL-05-LTLCardinality-12 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA GlobalResAllocation-COL-05-LTLCardinality-13 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA GlobalResAllocation-COL-05-LTLCardinality-14 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA GlobalResAllocation-COL-05-LTLCardinality-15 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
----- Kill lola and sara stdout -----
----- Kill lola and sara stderr -----
----- Finished stderr -----
----- Finished stdout -----

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="GlobalResAllocation-COL-05"
export BK_EXAMINATION="LTLCardinality"
export BK_TOOL="irma4mcc-full"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"

# 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

tar xzf /home/mcc/BenchKit/INPUTS/GlobalResAllocation-COL-05.tgz
mv GlobalResAllocation-COL-05 execution
cd execution
pwd
ls -lh

# this is for BenchKit: explicit launching of the test
echo "====================================================================="
echo " Generated by BenchKit 2-3637"
echo " Executing tool irma4mcc-full"
echo " Input is GlobalResAllocation-COL-05, 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 r246-blw7-152732548300105"
echo "====================================================================="
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 '' LTLCardinality.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
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 ;