About the Execution of ITS-Tools for BlocksWorld-PT-03
Execution Summary | |||||
Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
16207.388 | 2334583.00 | 2400843.00 | 7064.50 | [undef] | Cannot compute |
Execution Chart
We display below the execution chart for this examination (boot time has been removed).
Trace from the execution
Formatting '/data/fkordon/mcc2024-input.r602-tall-171774424600184.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2024-input.qcow2 backing_fmt=qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
..................
=====================================================================
Generated by BenchKit 2-5568
Executing tool itstools
Input is BlocksWorld-PT-03, examination is StateSpace
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r602-tall-171774424600184
=====================================================================
--------------------
preparation of the directory to be used:
/home/mcc/execution
total 3.5M
-rw-r--r-- 1 mcc users 83K Jun 7 06:38 CTLCardinality.txt
-rw-r--r-- 1 mcc users 410K Jun 7 06:38 CTLCardinality.xml
-rw-r--r-- 1 mcc users 176K Jun 7 06:38 CTLFireability.txt
-rw-r--r-- 1 mcc users 991K Jun 7 06:38 CTLFireability.xml
-rw-r--r-- 1 mcc users 13K Jun 7 06:44 LTLCardinality.txt
-rw-r--r-- 1 mcc users 51K Jun 7 06:44 LTLCardinality.xml
-rw-r--r-- 1 mcc users 43K Jun 7 06:44 LTLFireability.txt
-rw-r--r-- 1 mcc users 186K Jun 7 06:44 LTLFireability.xml
-rw-r--r-- 1 mcc users 1 Jun 7 06:26 NewModel
-rw-r--r-- 1 mcc users 89K Jun 7 06:39 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 444K Jun 7 06:39 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 91K Jun 7 06:39 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 510K Jun 7 06:39 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 16K Jun 7 06:43 UpperBounds.txt
-rw-r--r-- 1 mcc users 39K Jun 7 06:43 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Jun 7 06:26 equiv_col
-rw-r--r-- 1 mcc users 3 Jun 7 06:26 instance
-rw-r--r-- 1 mcc users 6 Jun 7 06:26 iscolored
-rw-r--r-- 1 mcc users 330K Jun 7 06:26 model.pnml
--------------------
content from stdout:
=== Data for post analysis generated by BenchKit (invocation template)
no data necessary for post analysis
=== Now, execution of the tool begins
BK_START 1717749254251
Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=StateSpace
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=BlocksWorld-PT-03
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
StateSpace PT
Running Version 202405141337
[2024-06-07 08:34:15] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, StateSpace, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2024-06-07 08:34:15] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2024-06-07 08:34:15] [INFO ] Load time of PNML (sax parser for PT used): 111 ms
[2024-06-07 08:34:15] [INFO ] Transformed 379 places.
[2024-06-07 08:34:15] [INFO ] Transformed 685 transitions.
[2024-06-07 08:34:15] [INFO ] Found NUPN structural information;
[2024-06-07 08:34:15] [INFO ] Completing missing partition info from NUPN : creating a component with [pred_on_table_0, pred_arm_empty_0, pred_on_table_1, pred_on_table_2, pred_on_table_3, pred_on_table_4, pred_on_table_5, pred_on_table_6, pred_on_table_7, pred_on_table_8, pred_on_table_9, pred_on_table_10, pred_on_table_11, pred_on_table_12, pred_on_table_13, pred_on_table_14, pred_on_table_15, pred_on_table_16, pred_on_table_17]
[2024-06-07 08:34:15] [INFO ] Parsed PT model containing 379 places and 685 transitions and 3412 arcs in 217 ms.
Reduce redundant transitions removed 1 transitions.
Starting structural reductions in STATESPACE mode, iteration 0 : 379/379 places, 684/684 transitions.
[2024-06-07 08:34:15] [INFO ] Redundant transitions in 32 ms returned []
Running 679 sub problems to find dead transitions.
// Phase 1: matrix 684 rows 379 cols
[2024-06-07 08:34:15] [INFO ] Computed 37 invariants in 38 ms
[2024-06-07 08:34:15] [INFO ] State equation strengthened by 26 read => feed constraints.
Problem TDEAD1 is UNSAT
Problem TDEAD19 is UNSAT
Problem TDEAD55 is UNSAT
Problem TDEAD74 is UNSAT
Problem TDEAD112 is UNSAT
Problem TDEAD131 is UNSAT
Problem TDEAD150 is UNSAT
Problem TDEAD226 is UNSAT
Problem TDEAD245 is UNSAT
Problem TDEAD264 is UNSAT
Problem TDEAD283 is UNSAT
Problem TDEAD302 is UNSAT
Problem TDEAD321 is UNSAT
Problem TDEAD359 is UNSAT
Problem TDEAD378 is UNSAT
Problem TDEAD412 is UNSAT
Problem TDEAD474 is UNSAT
Problem TDEAD502 is UNSAT
Problem TDEAD528 is UNSAT
Problem TDEAD612 is UNSAT
Problem TDEAD628 is UNSAT
Problem TDEAD642 is UNSAT
Problem TDEAD654 is UNSAT
Problem TDEAD664 is UNSAT
Problem TDEAD672 is UNSAT
Problem TDEAD682 is UNSAT
At refinement iteration 0 (INCLUDED_ONLY) 0/374 variables, 27/27 constraints. Problems are: Problem set: 26 solved, 653 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/374 variables, 0/27 constraints. Problems are: Problem set: 26 solved, 653 unsolved
Problem TDEAD93 is UNSAT
Problem TDEAD169 is UNSAT
Problem TDEAD188 is UNSAT
Problem TDEAD207 is UNSAT
Problem TDEAD340 is UNSAT
Problem TDEAD444 is UNSAT
Problem TDEAD552 is UNSAT
Problem TDEAD574 is UNSAT
Problem TDEAD594 is UNSAT
Problem TDEAD678 is UNSAT
At refinement iteration 2 (OVERLAPS) 5/379 variables, 10/37 constraints. Problems are: Problem set: 36 solved, 643 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/379 variables, 0/37 constraints. Problems are: Problem set: 36 solved, 643 unsolved
At refinement iteration 4 (OVERLAPS) 684/1063 variables, 379/416 constraints. Problems are: Problem set: 36 solved, 643 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/1063 variables, 26/442 constraints. Problems are: Problem set: 36 solved, 643 unsolved
[2024-06-07 08:34:40] [INFO ] Deduced a trap composed of 19 places in 74 ms of which 10 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/1063 variables, 1/443 constraints. Problems are: Problem set: 36 solved, 643 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 1063/1063 variables, and 443 constraints, problems are : Problem set: 36 solved, 643 unsolved in 30030 ms.
Refiners :[Positive P Invariants (semi-flows): 37/37 constraints, State Equation: 379/379 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 679/679 constraints, Known Traps: 1/1 constraints]
Escalating to Integer solving :Problem set: 36 solved, 643 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/356 variables, 1/1 constraints. Problems are: Problem set: 36 solved, 643 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/356 variables, 1/2 constraints. Problems are: Problem set: 36 solved, 643 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/356 variables, 0/2 constraints. Problems are: Problem set: 36 solved, 643 unsolved
At refinement iteration 3 (OVERLAPS) 23/379 variables, 36/38 constraints. Problems are: Problem set: 36 solved, 643 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/379 variables, 0/38 constraints. Problems are: Problem set: 36 solved, 643 unsolved
At refinement iteration 5 (OVERLAPS) 684/1063 variables, 379/417 constraints. Problems are: Problem set: 36 solved, 643 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/1063 variables, 26/443 constraints. Problems are: Problem set: 36 solved, 643 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/1063 variables, 643/1086 constraints. Problems are: Problem set: 36 solved, 643 unsolved
[2024-06-07 08:35:15] [INFO ] Deduced a trap composed of 19 places in 41 ms of which 2 ms to minimize.
[2024-06-07 08:35:15] [INFO ] Deduced a trap composed of 75 places in 98 ms of which 2 ms to minimize.
[2024-06-07 08:35:15] [INFO ] Deduced a trap composed of 36 places in 38 ms of which 1 ms to minimize.
[2024-06-07 08:35:15] [INFO ] Deduced a trap composed of 19 places in 40 ms of which 0 ms to minimize.
[2024-06-07 08:35:16] [INFO ] Deduced a trap composed of 36 places in 40 ms of which 1 ms to minimize.
[2024-06-07 08:35:16] [INFO ] Deduced a trap composed of 75 places in 72 ms of which 2 ms to minimize.
[2024-06-07 08:35:16] [INFO ] Deduced a trap composed of 91 places in 92 ms of which 2 ms to minimize.
[2024-06-07 08:35:17] [INFO ] Deduced a trap composed of 91 places in 95 ms of which 3 ms to minimize.
[2024-06-07 08:35:17] [INFO ] Deduced a trap composed of 51 places in 76 ms of which 1 ms to minimize.
[2024-06-07 08:35:17] [INFO ] Deduced a trap composed of 36 places in 74 ms of which 2 ms to minimize.
[2024-06-07 08:35:17] [INFO ] Deduced a trap composed of 84 places in 76 ms of which 2 ms to minimize.
[2024-06-07 08:35:17] [INFO ] Deduced a trap composed of 75 places in 75 ms of which 1 ms to minimize.
[2024-06-07 08:35:17] [INFO ] Deduced a trap composed of 19 places in 45 ms of which 1 ms to minimize.
[2024-06-07 08:35:18] [INFO ] Deduced a trap composed of 19 places in 27 ms of which 0 ms to minimize.
[2024-06-07 08:35:18] [INFO ] Deduced a trap composed of 36 places in 39 ms of which 1 ms to minimize.
[2024-06-07 08:35:18] [INFO ] Deduced a trap composed of 19 places in 31 ms of which 0 ms to minimize.
Error getting values : (error "ParserException while parsing response: ((s0 0)
(s1 0)
(s2 1)
(s3 0)
(s4 0)
(s5 0)
(s6 0)
(s7 0)
(s8 0)
(s9 0)
(s10 1)
(s11 0)
(s12 0)
(s13 1)
(s14 0)
(s15 0)
(s16 0)
(s17 1)
(s18 0)
(s19 1)
(s20 1)
(s21 0)
(s22 1)
(s23 1)
(s24 0)
(s25 1)
(s26 1)
(s27 0)
(s28 1)
(s29 0)
(s30 0)
(s31 1)
(s32 1)
(s33 0)
(s34 0)
(s35 1)
(s36 timeout
0) org.smtlib.IParser$ParserException: Unbalanced parentheses at end of input")
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 1063/1063 variables, and 1102 constraints, problems are : Problem set: 36 solved, 643 unsolved in 30019 ms.
Refiners :[Positive P Invariants (semi-flows): 37/37 constraints, State Equation: 379/379 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 643/679 constraints, Known Traps: 17/17 constraints]
After SMT, in 64476ms problems are : Problem set: 36 solved, 643 unsolved
Search for dead transitions found 36 dead transitions in 64508ms
Found 36 dead transitions using SMT.
Drop transitions (Dead Transitions using SMT only with invariants) removed 36 transitions
Dead transitions reduction (with SMT) removed 36 transitions
Starting structural reductions in STATESPACE mode, iteration 1 : 379/379 places, 648/684 transitions.
Reduce places removed 18 places and 0 transitions.
Starting structural reductions in STATESPACE mode, iteration 2 : 361/379 places, 648/684 transitions.
Finished structural reductions in STATESPACE mode , in 2 iterations and 64724 ms. Remains : 361/379 places, 648/684 transitions.
Final net has 361 places and 648 transitions.
[2024-06-07 08:35:20] [INFO ] Flatten gal took : 105 ms
[2024-06-07 08:35:20] [INFO ] Applying decomposition
[2024-06-07 08:35:20] [INFO ] Flatten gal took : 46 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202405141337/bin/convert-linux64' '-i' '/tmp/graph4546795534222041205.txt' '-o' '/tmp/graph4546795534222041205.bin' '-w' '/tmp/graph4546795534222041205.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202405141337/bin/louvain-linux64' '/tmp/graph4546795534222041205.bin' '-l' '-1' '-v' '-w' '/tmp/graph4546795534222041205.weights' '-q' '0' '-e' '0.001'
[2024-06-07 08:35:20] [INFO ] Decomposing Gal with order
[2024-06-07 08:35:20] [INFO ] Rewriting arrays to variables to allow decomposition.
[2024-06-07 08:35:21] [INFO ] Removed a total of 1116 redundant transitions.
[2024-06-07 08:35:21] [INFO ] Flatten gal took : 156 ms
[2024-06-07 08:35:21] [INFO ] Fuse similar labels procedure discarded/fused a total of 0 labels/synchronizations in 8 ms.
[2024-06-07 08:35:21] [INFO ] Time to serialize gal into /tmp/StateSpace6370010308137514415.gal : 11 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202405141337/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/StateSpace6370010308137514415.gal' '-t' 'CGAL' '--stats'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202405141337/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...219
ITS-tools command line returned an error code 137
[2024-06-07 08:50:26] [INFO ] Applying decomposition
[2024-06-07 08:50:26] [INFO ] Flatten gal took : 41 ms
[2024-06-07 08:50:27] [INFO ] Decomposing Gal with order
[2024-06-07 08:50:27] [INFO ] Rewriting arrays to variables to allow decomposition.
[2024-06-07 08:50:27] [INFO ] Removed a total of 1834 redundant transitions.
[2024-06-07 08:50:27] [INFO ] Flatten gal took : 97 ms
[2024-06-07 08:50:27] [INFO ] Fuse similar labels procedure discarded/fused a total of 0 labels/synchronizations in 7 ms.
[2024-06-07 08:50:27] [INFO ] Time to serialize gal into /tmp/StateSpace7319167505266704359.gal : 7 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202405141337/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/StateSpace7319167505266704359.gal' '-t' 'CGAL' '--stats'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202405141337/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...219
ITS-tools command line returned an error code 137
[2024-06-07 09:04:50] [INFO ] Flatten gal took : 40 ms
[2024-06-07 09:04:50] [INFO ] Input system was already deterministic with 648 transitions.
[2024-06-07 09:04:50] [INFO ] Transformed 361 places.
[2024-06-07 09:04:50] [INFO ] Transformed 648 transitions.
Running greatSPN : cd /home/mcc/execution;'/home/mcc/BenchKit/bin//../itstools/bin//..//greatspn//bin/pinvar' '/home/mcc/execution/gspn'
Run of greatSPN captured in /home/mcc/execution/outPut.txt
Running greatSPN : cd /home/mcc/execution;'/home/mcc/BenchKit/bin//../itstools/bin//..//greatspn//bin/RGMEDD2' '/home/mcc/execution/gspn' '-META' '-varord-only'
Run of greatSPN captured in /home/mcc/execution/outPut.txt
Using order generated by GreatSPN with heuristic : META
[2024-06-07 09:04:50] [INFO ] Time to serialize gal into /tmp/StateSpace13458344075718453691.gal : 6 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202405141337/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/StateSpace13458344075718453691.gal' '-t' 'CGAL' '--stats' '--load-order' '/home/mcc/execution/model.ord' '--gen-order' 'FOLLOW'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202405141337/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...286
Successfully loaded order from file /home/mcc/execution/model.ord
ITS-tools command line returned an error code 137
Total runtime 2333317 ms.
BK_STOP 1717751588834
--------------------
content from stderr:
+ export BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
+ BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ StateSpace = StateSpace ]]
+ [[ -f modelMain.xml ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution StateSpace -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
+ export PYTHONPATH=/home/mcc/BenchKit/itstools/pylibs
+ PYTHONPATH=/home/mcc/BenchKit/itstools/pylibs
+ export LD_LIBRARY_PATH=/home/mcc/BenchKit/itstools/pylibs:
+ LD_LIBRARY_PATH=/home/mcc/BenchKit/itstools/pylibs:
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202405141337.jar
+ VERSION=202405141337
+ echo 'Running Version 202405141337'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination StateSpace -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
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="BlocksWorld-PT-03"
export BK_EXAMINATION="StateSpace"
export BK_TOOL="itstools"
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 2-5568"
echo " Executing tool itstools"
echo " Input is BlocksWorld-PT-03, examination is StateSpace"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r602-tall-171774424600184"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"
tar xzf /home/mcc/BenchKit/INPUTS/BlocksWorld-PT-03.tgz
mv BlocksWorld-PT-03 execution
cd execution
if [ "StateSpace" = "ReachabilityDeadlock" ] || [ "StateSpace" = "UpperBounds" ] || [ "StateSpace" = "QuasiLiveness" ] || [ "StateSpace" = "StableMarking" ] || [ "StateSpace" = "Liveness" ] || [ "StateSpace" = "OneSafe" ] || [ "StateSpace" = "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 [ "StateSpace" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "StateSpace" != "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 "StateSpace.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property StateSpace.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "StateSpace.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 '
echo "FORMULA_NAME $x"
done
elif [ "StateSpace" = "ReachabilityDeadlock" ] || [ "StateSpace" = "QuasiLiveness" ] || [ "StateSpace" = "StableMarking" ] || [ "StateSpace" = "Liveness" ] || [ "StateSpace" = "OneSafe" ] ; then
echo "FORMULA_NAME StateSpace"
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 ;