fond
Model Checking Contest 2018
8th edition, Bratislava, Slovakia, June 26, 2018
Execution of r186-qhx2-152732138600059
Last Updated
June 26, 2018

About the Execution of Irma.full for QuasiCertifProtocol-PT-10

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
3290.210 235087.00 243849.00 2574.10 ???????????????? 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 568K
-rw-r--r-- 1 mcc users 9.5K May 15 18:54 CTLCardinality.txt
-rw-r--r-- 1 mcc users 45K May 15 18:54 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.3K May 15 18:54 CTLFireability.txt
-rw-r--r-- 1 mcc users 28K 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 6.4K May 15 18:50 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 4.5K May 26 09:27 LTLCardinality.txt
-rw-r--r-- 1 mcc users 20K May 26 09:27 LTLCardinality.xml
-rw-r--r-- 1 mcc users 3.1K May 26 09:27 LTLFireability.txt
-rw-r--r-- 1 mcc users 14K May 26 09:27 LTLFireability.xml
-rw-r--r-- 1 mcc users 9.7K May 15 18:54 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 42K May 15 18:54 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 116 May 15 18:54 ReachabilityDeadlock.txt
-rw-r--r-- 1 mcc users 354 May 15 18:54 ReachabilityDeadlock.xml
-rw-r--r-- 1 mcc users 3.6K 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 5.7K May 15 18:54 UpperBounds.txt
-rw-r--r-- 1 mcc users 16K May 15 18:54 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 May 15 18:50 equiv_col
-rw-r--r-- 1 mcc users 3 May 15 18:50 instance
-rw-r--r-- 1 mcc users 6 May 15 18:50 iscolored
-rw-r--r-- 1 mcc users 290K May 15 18:50 model.pnml
=====================================================================
Generated by BenchKit 2-3637
Executing tool irma4mcc-full
Input is QuasiCertifProtocol-PT-10, examination is LTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r186-qhx2-152732138600059
=====================================================================


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

=== Now, execution of the tool begins

BK_START 1528242080566


BK_STOP 1528242315653

--------------------
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 QuasiCertifProtocol-PT-10 as instance name.
Using QuasiCertifProtocol 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': True, 'Simple Free Choice': False, 'Extended Free Choice': False, 'State Machine': False, 'Marked Graph': False, 'Connected': True, 'Strongly Connected': False, 'Source Place': True, 'Sink Place': True, 'Source Transition': False, 'Sink Transition': False, 'Loop Free': True, 'Conservative': False, 'Sub-Conservative': False, 'Nested Units': False, 'Safe': False, 'Deadlock': True, 'Reversible': False, 'Quasi Live': None, 'Live': False}.
Known tools are: [{'Time': 513003, 'Memory': 7338.19, 'Tool': 'lola'}, {'Time': 513297, 'Memory': 7103.18, 'Tool': 'lola'}].
Learned tools are: [{'Tool': 'itstools'}].
LTLCardinality lola QuasiCertifProtocol-PT-10...
----- Start make prepare stderr -----

Time: 3600 - MCC
----- Start make prepare stdout -----
===========================================================================================
QuasiCertifProtocol-PT-10: translating PT Petri net model.pnml into LoLA format
===========================================================================================
translating PT Petri net complete


checking for too many tokens
===========================================================================================
QuasiCertifProtocol-PT-10: translating PT formula LTLCardinality into LoLA format
===========================================================================================
translating formula complete
touch formulae;
----- Start make result stderr -----
----- Start make result stdout -----
LTLCardinality @ QuasiCertifProtocol-PT-10 @ 3538 seconds
make: [verify] Error 134 (ignored)
----- Start make result stderr -----
Makefile:222: recipe for target 'verify' failed
----- Start make result stdout -----
lola: LoLA will run for 3538 seconds at most (--timelimit)
lola: NET
lola: reading net from model.pnml.lola
lola: finished parsing
lola: closed net file model.pnml.lola
lola: 726/65536 symbol table entries, 0 collisions
lola: preprocessing...
lola: finding significant places
lola: 550 places, 176 transitions, 175 significant places
lola: computing forward-conflicting sets
lola: computing back-conflicting sets
lola: 231 transition conflict sets
lola: TASK
lola: reading formula from QuasiCertifProtocol-PT-10-LTLCardinality.task
lola: A (G (X (F (G ((a3 <= a4)))))) : A (G (F (F (G ((a5 <= n4_10 + n4_0 + n4_1 + n4_2 + n4_3 + n4_4 + n4_5 + n4_6 + n4_7 + n4_8 + n4_9)))))) : A (X (X (F (G ((malicious_reservoir <= Cstart_10 + Cstart_0 + Cstart_1 + Cstart_2 + Cstart_3 + Cstart_4 + Cstart_5 + Cstart_6 + Cstart_7 + Cstart_8 + Cstart_9)))))) : A ((F (F ((2 <= n1_9 + n1_8 + n1_7 + n1_6 + n1_5 + n1_4 + n1_3 + n1_2 + n1_1 + n1_0 + n1_10))) U X (X ((1 <= s2_9 + s2_8 + s2_7 + s2_6 + s2_5 + s2_4 + s2_3 + s2_2 + s2_1 + s2_0 + s2_10))))) : A ((G ((a3 <= s6_0 + s6_1 + s6_2 + s6_3 + s6_4 + s6_5 + s6_6 + s6_7 + s6_8 + s6_9 + s6_10)) U X (G ((2 <= s6_0 + s6_1 + s6_2 + s6_3 + s6_4 + s6_5 + s6_6 + s6_7 + s6_8 + s6_9 + s6_10))))) : A (F (X (((n2_10 + n2_0 + n2_1 + n2_2 + n2_3 + n2_4 + n2_5 + n2_6 + n2_7 + n2_8 + n2_9 <= s3_8 + s3_7 + s3_6 + s3_5 + s3_4 + s3_3 + s3_2 + s3_1 + s3_0 + s3_10 + s3_9) U (1 <= n7_3_10 + n7_6_0 + n7_6_1 + n7_6_2 + n7_6_3 + n7_6_4 + n7_6_5 + n7_6_6 + n7_6_7 + n7_6_8 + n7_6_9 + n7_7_0 + n7_8_10 + n7_8_0 + n7_4_10 + n7_2_10 + n7_9_0 + n7_5_10 + n7_10_0 + n7_0_10 + n7_1_10 + n7_7_10 + n7_6_10 + n7_10_1 + n7_10_2 + n7_10_3 + n7_10_4 + n7_10_5 + n7_10_6 + n7_10_7 + n7_10_8 + n7_10_9 + n7_0_0 + n7_0_1 + n7_0_2 + n7_0_3 + n7_0_4 + n7_0_5 + n7_0_6 + n7_0_7 + n7_0_8 + n7_0_9 + n7_1_0 + n7_1_1 + n7_1_2 + n7_1_3 + n7_1_4 + n7_1_5 + n7_1_6 + n7_1_7 + n7_1_8 + n7_1_9 + n7_9_9 + n7_9_8 + n7_9_7 + n7_2_0 + n7_2_1 + n7_2_2 + n7_2_3 + n7_2_4 + n7_2_5 + n7_2_6 + n7_2_7 + n7_2_8 + n7_2_9 + n7_9_6 + n7_9_5 + n7_9_4 + n7_9_3 + n7_9_2 + n7_9_1 + n7_10_10 + n7_3_0 + n7_3_1 + n7_3_2 + n7_3_3 + n7_3_4 + n7_3_5 + n7_3_6 + n7_3_7 + n7_3_8 + n7_3_9 + n7_8_9 + n7_8_8 + n7_8_7 + n7_8_6 + n7_8_5 + n7_8_4 + n7_8_3 + n7_8_2 + n7_8_1 + n7_4_0 + n7_4_1 + n7_4_2 + n7_4_3 + n7_4_4 + n7_4_5 + n7_4_6 + n7_4_7 + n7_4_8 + n7_4_9 + n7_7_9 + n7_7_8 + n7_7_7 + n7_7_6 + n7_7_5 + n7_7_4 + n7_7_3 + n7_7_2 + n7_7_1 + n7_9_10 + n7_5_0 + n7_5_1 + n7_5_2 + n7_5_3 + n7_5_4 + n7_5_5 + n7_5_6 + n7_5_7 + n7_5_8 + n7_5_9))))) : A (F (X (F ((malicious_reservoir <= a1))))) : A (F (G ((n5_10 + n5_0 + n5_1 + n5_2 + n5_3 + n5_4 + n5_5 + n5_6 + n5_7 + n5_8 + n5_9 <= c1_8 + c1_7 + c1_6 + c1_5 + c1_4 + c1_3 + c1_2 + c1_1 + c1_0 + c1_10 + c1_9)))) : A (F ((X ((n8_8_0 <= n5_1)) U (n7_0_3 <= Sstart_3)))) : A (X (F (F (F ((s2_6 <= n9_3_3)))))) : A ((n9_3_9 <= SstopOK_1)) : A (X ((n9_0_7 <= n6_6))) : A (G ((s2_5 <= CstopOK_0))) : A (F (G (F (F ((n5_5 <= n7_0_10)))))) : A (G (F ((n4_1 <= n8_10_2)))) : A (F ((n9_1_3 <= n3_3)))
lola: computing a collection of formulas
lola: RUNNING
lola: subprocess 0 will run for 221 seconds at most (--localtimelimit=-1)
lola: ========================================
lola: ...considering subproblem: A (G (X (F (G ((a3 <= a4))))))
lola: ========================================
lola: SUBTASK
lola: checking LTL
lola: transforming LTL-Formula into a B\xfcchi-Automaton
lola: processed formula: A (G (X (F (G ((a3 <= a4))))))
lola: processed formula: A (G (X (F (G ((a3 <= a4))))))
lola: processed formula length: 30
lola: 0 rewrites
lola: formula mentions 0 of 550 places; total mentions: 0
lola: closed formula file QuasiCertifProtocol-PT-10-LTLCardinality.task
lola: the resulting B\xfcchi automaton has 3 states
lola: STORE
lola: using a bit-perfect encoder (--encoder=bit)
lola: using 704 bytes per marking, with 30 unused bits
lola: using a prefix tree store (--store=prefix)
lola: Formula contains X operator; stubborn sets not applicable
lola: SEARCH
lola: RUNNING
lola: 339344 markings, 2200108 edges, 67869 markings/sec, 0 secs
lola: 647560 markings, 4398000 edges, 61643 markings/sec, 5 secs
lola: 936467 markings, 6524306 edges, 57781 markings/sec, 10 secs
lola: 1184411 markings, 8580124 edges, 49589 markings/sec, 15 secs
lola: 1441993 markings, 10941016 edges, 51516 markings/sec, 20 secs
lola: 1740193 markings, 13858946 edges, 59640 markings/sec, 25 secs
lola: 2020340 markings, 16722221 edges, 56029 markings/sec, 30 secs
lola: 2277014 markings, 19564698 edges, 51335 markings/sec, 35 secs
lola: 2562165 markings, 22463721 edges, 57030 markings/sec, 40 secs
lola: 2825227 markings, 25318018 edges, 52612 markings/sec, 45 secs
lola: 3075777 markings, 28165293 edges, 50110 markings/sec, 50 secs
lola: 3310238 markings, 30966931 edges, 46892 markings/sec, 55 secs
lola: 3535349 markings, 33726499 edges, 45022 markings/sec, 60 secs
lola: 3744624 markings, 36476785 edges, 41855 markings/sec, 65 secs
lola: 3918974 markings, 39232282 edges, 34870 markings/sec, 70 secs
lola: 4204887 markings, 41125268 edges, 57183 markings/sec, 75 secs
lola: 4485933 markings, 43031580 edges, 56209 markings/sec, 80 secs
lola: 4744883 markings, 44936000 edges, 51790 markings/sec, 85 secs
lola: 4983494 markings, 46814413 edges, 47722 markings/sec, 90 secs
lola: 5202495 markings, 48723082 edges, 43800 markings/sec, 95 secs
lola: 5524742 markings, 51757501 edges, 64449 markings/sec, 100 secs
lola: 5786262 markings, 54616907 edges, 52304 markings/sec, 105 secs
lola: 6078812 markings, 57614472 edges, 58510 markings/sec, 110 secs
lola: 6352648 markings, 60533833 edges, 54767 markings/sec, 115 secs
lola: 6610488 markings, 63444082 edges, 51568 markings/sec, 120 secs
lola: 6863716 markings, 66322954 edges, 50646 markings/sec, 125 secs
lola: 7107900 markings, 69167338 edges, 48837 markings/sec, 130 secs
lola: 7328365 markings, 71961074 edges, 44093 markings/sec, 135 secs
lola: 7537871 markings, 74638791 edges, 41901 markings/sec, 140 secs
lola: 7724199 markings, 77137640 edges, 37266 markings/sec, 145 secs
lola: 7909070 markings, 79599385 edges, 36974 markings/sec, 150 secs
lola: 8179720 markings, 81627842 edges, 54130 markings/sec, 155 secs
lola: 8435640 markings, 83617274 edges, 51184 markings/sec, 160 secs
lola: 8678028 markings, 85584803 edges, 48478 markings/sec, 165 secs
lola: 8909970 markings, 87527826 edges, 46388 markings/sec, 170 secs
lola: 9122072 markings, 89421840 edges, 42420 markings/sec, 175 secs
lola: 9324939 markings, 91278693 edges, 40573 markings/sec, 180 secs
lola: 9500087 markings, 93031912 edges, 35030 markings/sec, 185 secs
lola: 9787414 markings, 95800106 edges, 57465 markings/sec, 190 secs
lola: 10041266 markings, 98622096 edges, 50770 markings/sec, 195 secs
lola: 10293810 markings, 101401374 edges, 50509 markings/sec, 200 secs
lola: 10549093 markings, 104166493 edges, 51057 markings/sec, 205 secs
lola: 10786654 markings, 106940498 edges, 47512 markings/sec, 210 secs
lola: 11009245 markings, 109658175 edges, 44518 markings/sec, 215 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 QuasiCertifProtocol-PT-10-LTLCardinality-0 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA QuasiCertifProtocol-PT-10-LTLCardinality-1 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA QuasiCertifProtocol-PT-10-LTLCardinality-2 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA QuasiCertifProtocol-PT-10-LTLCardinality-3 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA QuasiCertifProtocol-PT-10-LTLCardinality-4 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA QuasiCertifProtocol-PT-10-LTLCardinality-5 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA QuasiCertifProtocol-PT-10-LTLCardinality-6 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA QuasiCertifProtocol-PT-10-LTLCardinality-7 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA QuasiCertifProtocol-PT-10-LTLCardinality-8 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
----- Kill lola and sara stderr -----
FORMULA QuasiCertifProtocol-PT-10-LTLCardinality-9 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA QuasiCertifProtocol-PT-10-LTLCardinality-10 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA QuasiCertifProtocol-PT-10-LTLCardinality-11 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA QuasiCertifProtocol-PT-10-LTLCardinality-12 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA QuasiCertifProtocol-PT-10-LTLCardinality-13 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA QuasiCertifProtocol-PT-10-LTLCardinality-14 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA QuasiCertifProtocol-PT-10-LTLCardinality-15 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
----- Kill lola and sara stdout -----
----- Finished stdout -----
----- Finished stderr -----

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="QuasiCertifProtocol-PT-10"
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/QuasiCertifProtocol-PT-10.tgz
mv QuasiCertifProtocol-PT-10 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 QuasiCertifProtocol-PT-10, 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 r186-qhx2-152732138600059"
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 ;