fond
Model Checking Contest @ Petri Nets 2016
6th edition, Toruń, Poland, June 21, 2016
Execution of r173kn-ebro-146433145700444
Last Updated
June 30, 2016

About the Execution of Marcie for S_CSRepetitions-COL-03

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
6113.900 3600000.00 3600483.00 38.50 TFT???FF?T?FT?F? 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)
.............
=====================================================================
Generated by BenchKit 2-2979
Executing tool marcie
Input is S_CSRepetitions-COL-03, examination is CTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 1
Run identifier is r173kn-ebro-146433145700444
=====================================================================


--------------------
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 CSRepetitions-COL-03-CTLCardinality-0
FORMULA_NAME CSRepetitions-COL-03-CTLCardinality-1
FORMULA_NAME CSRepetitions-COL-03-CTLCardinality-10
FORMULA_NAME CSRepetitions-COL-03-CTLCardinality-11
FORMULA_NAME CSRepetitions-COL-03-CTLCardinality-12
FORMULA_NAME CSRepetitions-COL-03-CTLCardinality-13
FORMULA_NAME CSRepetitions-COL-03-CTLCardinality-14
FORMULA_NAME CSRepetitions-COL-03-CTLCardinality-15
FORMULA_NAME CSRepetitions-COL-03-CTLCardinality-2
FORMULA_NAME CSRepetitions-COL-03-CTLCardinality-3
FORMULA_NAME CSRepetitions-COL-03-CTLCardinality-4
FORMULA_NAME CSRepetitions-COL-03-CTLCardinality-5
FORMULA_NAME CSRepetitions-COL-03-CTLCardinality-6
FORMULA_NAME CSRepetitions-COL-03-CTLCardinality-7
FORMULA_NAME CSRepetitions-COL-03-CTLCardinality-8
FORMULA_NAME CSRepetitions-COL-03-CTLCardinality-9

=== Now, execution of the tool begins

BK_START 1464798464100


Marcie rev. 8535M (built: crohr on 2016-04-27)
A model checker for Generalized Stochastic Petri nets

authors: Alex Tovchigrechko (IDD package and CTL model checking)

Martin Schwarick (Symbolic numerical analysis and CSL model checking)

Christian Rohr (Simulative and approximative numerical model checking)

marcie@informatik.tu-cottbus.de

called as: marcie --net-file=model.pnml --mcc-file=CTLCardinality.xml --mcc-mode --memory=6 --suppress

parse successfull
net created successfully

Unfolding complete |P|=58|T|=81|A|=279
Time for unfolding: 0m 1.128sec

Net: CSRepetitions_COL_03
(NrP: 58 NrTr: 81 NrArc: 279)

net check time: 0m 0.000sec

parse formulas
formulas created successfully
place and transition orderings generation:0m 0.001sec

init dd package: 0m 7.942sec


RS generation: 0m30.601sec


-> reachability set: #nodes 17237 (1.7e+04) #states 134,074,721 (8)



starting MCC model checker
--------------------------

checking: AF [~ [3<=requestBufferSlots_dot]]
normalized: ~ [EG [3<=requestBufferSlots_dot]]

abstracting: (3<=requestBufferSlots_dot) states: 512,000 (5)
.................
EG iterations: 17
-> the formula is TRUE

FORMULA CSRepetitions-COL-03-CTLCardinality-6 TRUE TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS UNFOLDING_TO_PT

MC time: 0m 0.229sec

checking: EG [AF [3<=requestBufferSlots_dot]]
normalized: EG [~ [EG [~ [3<=requestBufferSlots_dot]]]]

abstracting: (3<=requestBufferSlots_dot) states: 512,000 (5)
.
EG iterations: 1
.................
EG iterations: 17
-> the formula is FALSE

FORMULA CSRepetitions-COL-03-CTLCardinality-15 FALSE TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS UNFOLDING_TO_PT

MC time: 0m 1.148sec

checking: ~ [AG [requestBufferSlots_dot<=requestBufferSlots_dot]]
normalized: E [true U ~ [requestBufferSlots_dot<=requestBufferSlots_dot]]

abstracting: (requestBufferSlots_dot<=requestBufferSlots_dot) states: 134,074,721 (8)
-> the formula is FALSE

FORMULA CSRepetitions-COL-03-CTLCardinality-1 FALSE TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS UNFOLDING_TO_PT

MC time: 0m 0.026sec

checking: ~ [EF [AX [3<=sum(requestBuffer_cId9, requestBuffer_cId8, requestBuffer_cId7, requestBuffer_cId6, requestBuffer_cId5, requestBuffer_cId4, requestBuffer_cId3, requestBuffer_cId2, requestBuffer_cId1)]]]
normalized: ~ [E [true U ~ [EX [~ [3<=sum(requestBuffer_cId9, requestBuffer_cId8, requestBuffer_cId7, requestBuffer_cId6, requestBuffer_cId5, requestBuffer_cId4, requestBuffer_cId3, requestBuffer_cId2, requestBuffer_cId1)]]]]]

abstracting: (3<=sum(requestBuffer_cId9, requestBuffer_cId8, requestBuffer_cId7, requestBuffer_cId6, requestBuffer_cId5, requestBuffer_cId4, requestBuffer_cId3, requestBuffer_cId2, requestBuffer_cId1)) states: 72,162,816 (7)
.-> the formula is FALSE

FORMULA CSRepetitions-COL-03-CTLCardinality-8 FALSE TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS UNFOLDING_TO_PT

MC time: 0m 6.710sec

checking: ~ [AF [AG [sum(serverWaiting_sId3, serverWaiting_sId2, serverWaiting_sId1)<=sum(clientWaiting_cId9, clientWaiting_cId8, clientWaiting_cId7, clientWaiting_cId6, clientWaiting_cId5, clientWaiting_cId4, clientWaiting_cId3, clientWaiting_cId2, clientWaiting_cId1)]]]
normalized: EG [E [true U ~ [sum(serverWaiting_sId3, serverWaiting_sId2, serverWaiting_sId1)<=sum(clientWaiting_cId9, clientWaiting_cId8, clientWaiting_cId7, clientWaiting_cId6, clientWaiting_cId5, clientWaiting_cId4, clientWaiting_cId3, clientWaiting_cId2, clientWaiting_cId1)]]]

abstracting: (sum(serverWaiting_sId3, serverWaiting_sId2, serverWaiting_sId1)<=sum(clientWaiting_cId9, clientWaiting_cId8, clientWaiting_cId7, clientWaiting_cId6, clientWaiting_cId5, clientWaiting_cId4, clientWaiting_cId3, clientWaiting_cId2, clientWaiting_cId1)) states: 133,914,847 (8)

EG iterations: 0
-> the formula is TRUE

FORMULA CSRepetitions-COL-03-CTLCardinality-0 TRUE TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS UNFOLDING_TO_PT

MC time: 0m 8.612sec

checking: ~ [[AG [[sum(serverWaiting_sId3, serverWaiting_sId2, serverWaiting_sId1)<=sum(clientWaiting_cId9, clientWaiting_cId8, clientWaiting_cId7, clientWaiting_cId6, clientWaiting_cId5, clientWaiting_cId4, clientWaiting_cId3, clientWaiting_cId2, clientWaiting_cId1) | 3<=requestBufferSlots_dot]] | AF [~ [3<=requestBufferSlots_dot]]]]
normalized: ~ [[~ [EG [3<=requestBufferSlots_dot]] | ~ [E [true U ~ [[sum(serverWaiting_sId3, serverWaiting_sId2, serverWaiting_sId1)<=sum(clientWaiting_cId9, clientWaiting_cId8, clientWaiting_cId7, clientWaiting_cId6, clientWaiting_cId5, clientWaiting_cId4, clientWaiting_cId3, clientWaiting_cId2, clientWaiting_cId1) | 3<=requestBufferSlots_dot]]]]]]

abstracting: (3<=requestBufferSlots_dot) states: 512,000 (5)
abstracting: (sum(serverWaiting_sId3, serverWaiting_sId2, serverWaiting_sId1)<=sum(clientWaiting_cId9, clientWaiting_cId8, clientWaiting_cId7, clientWaiting_cId6, clientWaiting_cId5, clientWaiting_cId4, clientWaiting_cId3, clientWaiting_cId2, clientWaiting_cId1)) states: 133,914,847 (8)
abstracting: (3<=requestBufferSlots_dot) states: 512,000 (5)
.................
EG iterations: 17
-> the formula is FALSE

FORMULA CSRepetitions-COL-03-CTLCardinality-5 FALSE TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS UNFOLDING_TO_PT

MC time: 0m 0.138sec

checking: [~ [~ [EX [1<=sum(clientSending_cId9, clientSending_cId8, clientSending_cId7, clientSending_cId6, clientSending_cId5, clientSending_cId4, clientSending_cId3, clientSending_cId2, clientSending_cId1)]]] & EF [AG [sum(clientSending_cId9, clientSending_cId8, clientSending_cId7, clientSending_cId6, clientSending_cId5, clientSending_cId4, clientSending_cId3, clientSending_cId2, clientSending_cId1)<=requestBufferSlots_dot]]]
normalized: [E [true U ~ [E [true U ~ [sum(clientSending_cId9, clientSending_cId8, clientSending_cId7, clientSending_cId6, clientSending_cId5, clientSending_cId4, clientSending_cId3, clientSending_cId2, clientSending_cId1)<=requestBufferSlots_dot]]]] & EX [1<=sum(clientSending_cId9, clientSending_cId8, clientSending_cId7, clientSending_cId6, clientSending_cId5, clientSending_cId4, clientSending_cId3, clientSending_cId2, clientSending_cId1)]]

abstracting: (1<=sum(clientSending_cId9, clientSending_cId8, clientSending_cId7, clientSending_cId6, clientSending_cId5, clientSending_cId4, clientSending_cId3, clientSending_cId2, clientSending_cId1)) states: 133,949,101 (8)
.abstracting: (sum(clientSending_cId9, clientSending_cId8, clientSending_cId7, clientSending_cId6, clientSending_cId5, clientSending_cId4, clientSending_cId3, clientSending_cId2, clientSending_cId1)<=requestBufferSlots_dot) states: 1,199,620 (6)
-> the formula is FALSE

FORMULA CSRepetitions-COL-03-CTLCardinality-14 FALSE TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS UNFOLDING_TO_PT

MC time: 0m 0.517sec

checking: ~ [[~ [~ [~ [2<=sum(clientSending_cId9, clientSending_cId8, clientSending_cId7, clientSending_cId6, clientSending_cId5, clientSending_cId4, clientSending_cId3, clientSending_cId2, clientSending_cId1)]]] & AG [~ [3<=sum(serverAnwering_cId9_sId3, serverAnwering_cId9_sId2, serverAnwering_cId9_sId1, serverAnwering_cId8_sId3, serverAnwering_cId8_sId2, serverAnwering_cId8_sId1, serverAnwering_cId7_sId3, serverAnwering_cId7_sId2, serverAnwering_cId7_sId1, serverAnwering_cId6_sId3, serverAnwering_cId6_sId2, serverAnwering_cId6_sId1, serverAnwering_cId5_sId3, serverAnwering_cId5_sId2, serverAnwering_cId5_sId1, serverAnwering_cId4_sId3, serverAnwering_cId4_sId2, serverAnwering_cId4_sId1, serverAnwering_cId3_sId3, serverAnwering_cId3_sId2, serverAnwering_cId3_sId1, serverAnwering_cId2_sId3, serverAnwering_cId2_sId2, serverAnwering_cId2_sId1, serverAnwering_cId1_sId3, serverAnwering_cId1_sId2, serverAnwering_cId1_sId1)]]]]
normalized: ~ [[~ [E [true U 3<=sum(serverAnwering_cId9_sId3, serverAnwering_cId9_sId2, serverAnwering_cId9_sId1, serverAnwering_cId8_sId3, serverAnwering_cId8_sId2, serverAnwering_cId8_sId1, serverAnwering_cId7_sId3, serverAnwering_cId7_sId2, serverAnwering_cId7_sId1, serverAnwering_cId6_sId3, serverAnwering_cId6_sId2, serverAnwering_cId6_sId1, serverAnwering_cId5_sId3, serverAnwering_cId5_sId2, serverAnwering_cId5_sId1, serverAnwering_cId4_sId3, serverAnwering_cId4_sId2, serverAnwering_cId4_sId1, serverAnwering_cId3_sId3, serverAnwering_cId3_sId2, serverAnwering_cId3_sId1, serverAnwering_cId2_sId3, serverAnwering_cId2_sId2, serverAnwering_cId2_sId1, serverAnwering_cId1_sId3, serverAnwering_cId1_sId2, serverAnwering_cId1_sId1)]] & ~ [2<=sum(clientSending_cId9, clientSending_cId8, clientSending_cId7, clientSending_cId6, clientSending_cId5, clientSending_cId4, clientSending_cId3, clientSending_cId2, clientSending_cId1)]]]

abstracting: (2<=sum(clientSending_cId9, clientSending_cId8, clientSending_cId7, clientSending_cId6, clientSending_cId5, clientSending_cId4, clientSending_cId3, clientSending_cId2, clientSending_cId1)) states: 132,162,421 (8)
abstracting: (3<=sum(serverAnwering_cId9_sId3, serverAnwering_cId9_sId2, serverAnwering_cId9_sId1, serverAnwering_cId8_sId3, serverAnwering_cId8_sId2, serverAnwering_cId8_sId1, serverAnwering_cId7_sId3, serverAnwering_cId7_sId2, serverAnwering_cId7_sId1, serverAnwering_cId6_sId3, serverAnwering_cId6_sId2, serverAnwering_cId6_sId1, serverAnwering_cId5_sId3, serverAnwering_cId5_sId2, serverAnwering_cId5_sId1, serverAnwering_cId4_sId3, serverAnwering_cId4_sId2, serverAnwering_cId4_sId1, serverAnwering_cId3_sId3, serverAnwering_cId3_sId2, serverAnwering_cId3_sId1, serverAnwering_cId2_sId3, serverAnwering_cId2_sId2, serverAnwering_cId2_sId1, serverAnwering_cId1_sId3, serverAnwering_cId1_sId2, serverAnwering_cId1_sId1)) states: 94,391,649 (7)
-> the formula is TRUE

FORMULA CSRepetitions-COL-03-CTLCardinality-3 TRUE TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS UNFOLDING_TO_PT

MC time: 2m41.704sec

checking: EX [AF [[1<=sum(requestBuffer_cId9, requestBuffer_cId8, requestBuffer_cId7, requestBuffer_cId6, requestBuffer_cId5, requestBuffer_cId4, requestBuffer_cId3, requestBuffer_cId2, requestBuffer_cId1) | 2<=sum(serverAnwering_cId9_sId3, serverAnwering_cId9_sId2, serverAnwering_cId9_sId1, serverAnwering_cId8_sId3, serverAnwering_cId8_sId2, serverAnwering_cId8_sId1, serverAnwering_cId7_sId3, serverAnwering_cId7_sId2, serverAnwering_cId7_sId1, serverAnwering_cId6_sId3, serverAnwering_cId6_sId2, serverAnwering_cId6_sId1, serverAnwering_cId5_sId3, serverAnwering_cId5_sId2, serverAnwering_cId5_sId1, serverAnwering_cId4_sId3, serverAnwering_cId4_sId2, serverAnwering_cId4_sId1, serverAnwering_cId3_sId3, serverAnwering_cId3_sId2, serverAnwering_cId3_sId1, serverAnwering_cId2_sId3, serverAnwering_cId2_sId2, serverAnwering_cId2_sId1, serverAnwering_cId1_sId3, serverAnwering_cId1_sId2, serverAnwering_cId1_sId1)]]]
normalized: EX [~ [EG [~ [[1<=sum(requestBuffer_cId9, requestBuffer_cId8, requestBuffer_cId7, requestBuffer_cId6, requestBuffer_cId5, requestBuffer_cId4, requestBuffer_cId3, requestBuffer_cId2, requestBuffer_cId1) | 2<=sum(serverAnwering_cId9_sId3, serverAnwering_cId9_sId2, serverAnwering_cId9_sId1, serverAnwering_cId8_sId3, serverAnwering_cId8_sId2, serverAnwering_cId8_sId1, serverAnwering_cId7_sId3, serverAnwering_cId7_sId2, serverAnwering_cId7_sId1, serverAnwering_cId6_sId3, serverAnwering_cId6_sId2, serverAnwering_cId6_sId1, serverAnwering_cId5_sId3, serverAnwering_cId5_sId2, serverAnwering_cId5_sId1, serverAnwering_cId4_sId3, serverAnwering_cId4_sId2, serverAnwering_cId4_sId1, serverAnwering_cId3_sId3, serverAnwering_cId3_sId2, serverAnwering_cId3_sId1, serverAnwering_cId2_sId3, serverAnwering_cId2_sId2, serverAnwering_cId2_sId1, serverAnwering_cId1_sId3, serverAnwering_cId1_sId2, serverAnwering_cId1_sId1)]]]]]

abstracting: (2<=sum(serverAnwering_cId9_sId3, serverAnwering_cId9_sId2, serverAnwering_cId9_sId1, serverAnwering_cId8_sId3, serverAnwering_cId8_sId2, serverAnwering_cId8_sId1, serverAnwering_cId7_sId3, serverAnwering_cId7_sId2, serverAnwering_cId7_sId1, serverAnwering_cId6_sId3, serverAnwering_cId6_sId2, serverAnwering_cId6_sId1, serverAnwering_cId5_sId3, serverAnwering_cId5_sId2, serverAnwering_cId5_sId1, serverAnwering_cId4_sId3, serverAnwering_cId4_sId2, serverAnwering_cId4_sId1, serverAnwering_cId3_sId3, serverAnwering_cId3_sId2, serverAnwering_cId3_sId1, serverAnwering_cId2_sId3, serverAnwering_cId2_sId2, serverAnwering_cId2_sId1, serverAnwering_cId1_sId3, serverAnwering_cId1_sId2, serverAnwering_cId1_sId1)) states: 129,974,625 (8)
abstracting: (1<=sum(requestBuffer_cId9, requestBuffer_cId8, requestBuffer_cId7, requestBuffer_cId6, requestBuffer_cId5, requestBuffer_cId4, requestBuffer_cId3, requestBuffer_cId2, requestBuffer_cId1)) states: 132,027,450 (8)
.............
EG iterations: 13
.-> the formula is TRUE

FORMULA CSRepetitions-COL-03-CTLCardinality-10 TRUE TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS UNFOLDING_TO_PT

MC time: 2m29.290sec

checking: ~ [E [3<=requestBufferSlots_dot U ~ [sum(serverAnwering_cId9_sId3, serverAnwering_cId9_sId2, serverAnwering_cId9_sId1, serverAnwering_cId8_sId3, serverAnwering_cId8_sId2, serverAnwering_cId8_sId1, serverAnwering_cId7_sId3, serverAnwering_cId7_sId2, serverAnwering_cId7_sId1, serverAnwering_cId6_sId3, serverAnwering_cId6_sId2, serverAnwering_cId6_sId1, serverAnwering_cId5_sId3, serverAnwering_cId5_sId2, serverAnwering_cId5_sId1, serverAnwering_cId4_sId3, serverAnwering_cId4_sId2, serverAnwering_cId4_sId1, serverAnwering_cId3_sId3, serverAnwering_cId3_sId2, serverAnwering_cId3_sId1, serverAnwering_cId2_sId3, serverAnwering_cId2_sId2, serverAnwering_cId2_sId1, serverAnwering_cId1_sId3, serverAnwering_cId1_sId2, serverAnwering_cId1_sId1)<=sum(clientWaiting_cId9, clientWaiting_cId8, clientWaiting_cId7, clientWaiting_cId6, clientWaiting_cId5, clientWaiting_cId4, clientWaiting_cId3, cli
BK_TIME_CONFINEMENT_REACHED

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

check for maximal unmarked siphon
ok
check if there are places and transitions
ok
check if there are transitions without pre-places
ok
check if at least one transition is enabled in m0
ok
check if there are transitions that can never fire
ok


initing FirstDep: 0m 0.000sec

1305 1030 1797 1436 2684 2772 2103 3411 4023 4671 4036 5973 7117 5523 7794 7181 6174 10125 12697 12665 14890 14718 13297 12480 10333 18729 23684 23779 18059 28590 26257 26325 24522 23207 19339
iterations count:35576 (439), effective:2004 (24)

initing FirstDep: 0m 0.000sec

2480 13281
iterations count:2543 (31), effective:118 (1)
14476 19973
iterations count:2078 (25), effective:76 (0)
15447 19973
iterations count:2083 (25), effective:78 (0)

iterations count:97 (1), effective:7 (0)
17394
iterations count:1410 (17), effective:108 (1)

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="S_CSRepetitions-COL-03"
export BK_EXAMINATION="CTLCardinality"
export BK_TOOL="marcie"
export BK_RESULT_DIR="/users/gast00/fkordon/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/S_CSRepetitions-COL-03.tgz
mv S_CSRepetitions-COL-03 execution

# this is for BenchKit: explicit launching of the test

cd execution
echo "====================================================================="
echo " Generated by BenchKit 2-2979"
echo " Executing tool marcie"
echo " Input is S_CSRepetitions-COL-03, examination is CTLCardinality"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 1"
echo " Run identifier is r173kn-ebro-146433145700444"
echo "====================================================================="
echo
echo "--------------------"
echo "content from stdout:"
echo
echo "=== Data for post analysis generated by BenchKit (invocation template)"
echo
if [ "CTLCardinality" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "CTLCardinality" != "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 "CTLCardinality.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property CTLCardinality.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "CTLCardinality.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 '' CTLCardinality.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 ;