About the Execution of ITS-Tools.L for PermAdmissibility-PT-10
Execution Summary | |||||
Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
15741.400 | 3380105.00 | 6951873.00 | 1065.70 | [undef] | Cannot compute |
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 876K
-rw-r--r-- 1 mcc users 4.0K May 15 18:54 CTLCardinality.txt
-rw-r--r-- 1 mcc users 20K May 15 18:54 CTLCardinality.xml
-rw-r--r-- 1 mcc users 27K May 15 18:54 CTLFireability.txt
-rw-r--r-- 1 mcc users 102K 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 3.0K May 15 18:54 LTLCardinality.txt
-rw-r--r-- 1 mcc users 12K May 15 18:54 LTLCardinality.xml
-rw-r--r-- 1 mcc users 11K May 15 18:54 LTLFireability.txt
-rw-r--r-- 1 mcc users 39K May 15 18:54 LTLFireability.xml
-rw-r--r-- 1 mcc users 4.7K May 15 18:54 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 21K May 15 18:54 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 114 May 15 18:54 ReachabilityDeadlock.txt
-rw-r--r-- 1 mcc users 352 May 15 18:54 ReachabilityDeadlock.xml
-rw-r--r-- 1 mcc users 19K May 15 18:54 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 70K May 15 18:54 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 2.0K May 15 18:54 UpperBounds.txt
-rw-r--r-- 1 mcc users 4.6K 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 484K May 15 18:50 model.pnml
=====================================================================
Generated by BenchKit 2-3637
Executing tool itstoolsl
Input is PermAdmissibility-PT-10, examination is ReachabilityDeadlock
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r117-csrt-152666477000496
=====================================================================
--------------------
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 PermAdmissibility-PT-10-ReachabilityDeadlock-0
=== Now, execution of the tool begins
BK_START 1527259696794
Flatten gal took : 273 ms
Constant places removed 64 places and 0 transitions.
Iterating post reduction 0 with 64 rules applied. Total rules applied 64 place count 104 transition count 592
Symmetric choice reduction at 1 with 28 rule applications. Total rules 92 place count 104 transition count 592
Constant places removed 28 places and 252 transitions.
Iterating post reduction 1 with 28 rules applied. Total rules applied 120 place count 76 transition count 340
Applied a total of 120 rules in 54 ms. Remains 76 /168 variables (removed 92) and now considering 340/592 (removed 252) transitions.
// Phase 1: matrix 340 rows 76 cols
Using solver Z3 to compute partial order matrices.
Built C files in :
/home/mcc/execution
Converted graph to binary with : CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.201805241334/bin/convert-linux64, -i, /tmp/graph5937607695207803212.txt, -o, /tmp/graph5937607695207803212.bin, -w, /tmp/graph5937607695207803212.weights], workingDir=null]
Built communities with : CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.201805241334/bin/louvain-linux64, /tmp/graph5937607695207803212.bin, -l, -1, -v, -w, /tmp/graph5937607695207803212.weights, -q, 0, -e, 0.001], workingDir=null]
Invoking ITS tools like this :CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.201805241334/bin/its-ctl-linux64, --gc-threshold, 2000000, --quiet, -i, /home/mcc/execution/ReachabilityDeadlock.pnml.gal, -t, CGAL, -ctl, DEADLOCK], workingDir=/home/mcc/execution]
its-ctl command run as :
/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.201805241334/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -i /home/mcc/execution/ReachabilityDeadlock.pnml.gal -t CGAL -ctl DEADLOCK
No direction supplied, using forward translation only.
built 6 ordering constraints for composite.
built 76 ordering constraints for composite.
Presburger conditions satisfied. Using coverability to approximate state space in K-Induction.
// Phase 1: matrix 340 rows 76 cols
Running compilation step : CommandLine [args=[gcc, -c, -I/home/mcc/BenchKit//lts_install_dir//include, -I., -std=c99, -fPIC, -O3, model.c], workingDir=/home/mcc/execution]
Compilation finished in 7267 ms.
Running link step : CommandLine [args=[gcc, -shared, -o, gal.so, model.o], workingDir=/home/mcc/execution]
Link finished in 102 ms.
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=1, -p, --pins-guards, --when, -d], workingDir=/home/mcc/execution]
terminate called after throwing an instance of 'std::bad_alloc'
what(): std::bad_alloc
WARNING : LTS min runner thread failed on error :java.lang.RuntimeException: Unexpected exception when executing ltsmin :CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=1, -p, --pins-guards, --when, -d], workingDir=/home/mcc/execution]
255
BK_STOP 1527263076899
--------------------
content from stderr:
+ export BINDIR=/home/mcc/BenchKit/
+ BINDIR=/home/mcc/BenchKit/
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ /home/mcc/BenchKit//runeclipse.sh /home/mcc/execution ReachabilityDeadlock -its -ltsminpath /home/mcc/BenchKit//lts_install_dir/ -louvain -smt
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
+ /home/mcc/BenchKit//itstools/its-tools -consoleLog -data /home/mcc/execution/workspace -pnfolder /home/mcc/execution -examination ReachabilityDeadlock -z3path /home/mcc/BenchKit//z3/bin/z3 -yices2path /home/mcc/BenchKit//yices/bin/yices -its -ltsminpath /home/mcc/BenchKit//lts_install_dir/ -louvain -smt -vmargs -Dosgi.locking=none -Declipse.stateSaveDelayInterval=-1 -Dosgi.configuration.area=/tmp/.eclipse -Xss8m -Xms40m -Xmx8192m -Dfile.encoding=UTF-8 -Dosgi.requiredJavaVersion=1.6
May 25, 2018 2:48:19 PM fr.lip6.move.gal.application.Application start
INFO: Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityDeadlock, -z3path, /home/mcc/BenchKit//z3/bin/z3, -yices2path, /home/mcc/BenchKit//yices/bin/yices, -its, -ltsminpath, /home/mcc/BenchKit//lts_install_dir/, -louvain, -smt]
May 25, 2018 2:48:19 PM fr.lip6.move.gal.application.MccTranslator transformPNML
INFO: Parsing pnml file : /home/mcc/execution/model.pnml
May 25, 2018 2:48:19 PM fr.lip6.move.gal.nupn.PTNetReader loadFromXML
INFO: Load time of PNML (sax parser for PT used): 147 ms
May 25, 2018 2:48:19 PM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 168 places.
May 25, 2018 2:48:20 PM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 592 transitions.
May 25, 2018 2:48:20 PM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/model.pnml.img.gal : 41 ms
May 25, 2018 2:48:20 PM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 265 ms
May 25, 2018 2:48:20 PM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/model.pnml.simple.gal : 16 ms
May 25, 2018 2:48:20 PM fr.lip6.move.gal.semantics.DeterministicNextBuilder getDeterministicNext
INFO: Input system was already deterministic with 592 transitions.
May 25, 2018 2:48:21 PM fr.lip6.move.gal.application.MccTranslator applyOrder
INFO: Applying decomposition
May 25, 2018 2:48:21 PM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 112 ms
May 25, 2018 2:48:21 PM fr.lip6.move.gal.semantics.DeterministicNextBuilder getDeterministicNext
INFO: Input system was already deterministic with 340 transitions.
May 25, 2018 2:48:21 PM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 65 ms
Begin: Fri May 25 14:48:21 2018
Computation of communities with the Newman-Girvan Modularity quality function
level 0:
start computation: Fri May 25 14:48:21 2018
network size: 76 nodes, 914 links, 678 weight
quality increased from -0.035987 to 0.401684
end computation: Fri May 25 14:48:21 2018
level 1:
start computation: Fri May 25 14:48:21 2018
network size: 6 nodes, 30 links, 678 weight
quality increased from 0.401684 to 0.414853
end computation: Fri May 25 14:48:21 2018
level 2:
start computation: Fri May 25 14:48:21 2018
network size: 4 nodes, 14 links, 678 weight
quality increased from 0.414853 to 0.414853
end computation: Fri May 25 14:48:21 2018
End: Fri May 25 14:48:21 2018
Total duration: 0 sec
0.414853
May 25, 2018 2:48:21 PM fr.lip6.move.gal.instantiate.CompositeBuilder decomposeWithOrder
INFO: Decomposing Gal with order
May 25, 2018 2:48:21 PM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 73 ms
May 25, 2018 2:48:21 PM fr.lip6.move.gal.instantiate.CompositeBuilder rewriteArraysToAllowPartition
INFO: Rewriting arrays to variables to allow decomposition.
May 25, 2018 2:48:21 PM fr.lip6.move.gal.instantiate.Instantiator fuseIsomorphicEffects
INFO: Removed a total of 154 redundant transitions.
May 25, 2018 2:48:21 PM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/ReachabilityDeadlock.pnml.gal : 5 ms
May 25, 2018 2:48:21 PM fr.lip6.move.gal.gal2smt.bmc.KInductionSolver computeAndDeclareInvariants
INFO: Computed 0 place invariants in 22 ms
May 25, 2018 2:48:23 PM fr.lip6.move.gal.gal2smt.bmc.KInductionSolver init
INFO: Proved 76 variables to be positive in 1673 ms
May 25, 2018 2:48:23 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeAblingMatrix
INFO: Computing symmetric may disable matrix : 340 transitions.
May 25, 2018 2:48:23 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of disable matrix completed :0/340 took 4 ms. Total solver calls (SAT/UNSAT): 0(0/0)
May 25, 2018 2:48:23 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Complete disable matrix. took 62 ms. Total solver calls (SAT/UNSAT): 0(0/0)
May 25, 2018 2:48:23 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeAblingMatrix
INFO: Computing symmetric may enable matrix : 340 transitions.
May 25, 2018 2:48:23 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Complete enable matrix. took 16 ms. Total solver calls (SAT/UNSAT): 0(0/0)
May 25, 2018 2:48:23 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeCoEnablingMatrix
INFO: Computing symmetric co enabling matrix : 340 transitions.
May 25, 2018 2:48:26 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of co-enabling matrix(93/340) took 3020 ms. Total solver calls (SAT/UNSAT): 1489(1489/0)
May 25, 2018 2:48:29 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of co-enabling matrix(135/340) took 6276 ms. Total solver calls (SAT/UNSAT): 3655(3655/0)
May 25, 2018 2:48:32 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of co-enabling matrix(184/340) took 9316 ms. Total solver calls (SAT/UNSAT): 5630(5630/0)
May 25, 2018 2:48:36 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of co-enabling matrix(211/340) took 12367 ms. Total solver calls (SAT/UNSAT): 6116(6116/0)
May 25, 2018 2:48:39 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of co-enabling matrix(220/340) took 15416 ms. Total solver calls (SAT/UNSAT): 6412(6412/0)
May 25, 2018 2:48:42 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of co-enabling matrix(224/340) took 18522 ms. Total solver calls (SAT/UNSAT): 6682(6682/0)
May 25, 2018 2:48:45 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of co-enabling matrix(230/340) took 21576 ms. Total solver calls (SAT/UNSAT): 7057(7057/0)
May 25, 2018 2:48:48 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of co-enabling matrix(232/340) took 24612 ms. Total solver calls (SAT/UNSAT): 7174(7174/0)
May 25, 2018 2:48:52 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of co-enabling matrix(284/340) took 28675 ms. Total solver calls (SAT/UNSAT): 9253(9253/0)
May 25, 2018 2:48:55 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of co-enabling matrix(289/340) took 32038 ms. Total solver calls (SAT/UNSAT): 9513(9513/0)
May 25, 2018 2:48:59 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of co-enabling matrix(295/340) took 35867 ms. Total solver calls (SAT/UNSAT): 9792(9792/0)
May 25, 2018 2:49:02 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of co-enabling matrix(303/340) took 38957 ms. Total solver calls (SAT/UNSAT): 10108(10108/0)
May 25, 2018 2:49:05 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Finished co-enabling matrix. took 41773 ms. Total solver calls (SAT/UNSAT): 10738(10738/0)
May 25, 2018 2:49:05 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeDoNotAccord
INFO: Computing Do-Not-Accords matrix : 340 transitions.
May 25, 2018 2:59:24 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Completed DNA matrix. took 619094 ms. Total solver calls (SAT/UNSAT): 14905(0/14905)
May 25, 2018 2:59:24 PM fr.lip6.move.gal.gal2pins.Gal2PinsTransformerNext transform
INFO: Built C files in 663475ms conformant to PINS in folder :/home/mcc/execution
ITS-tools command line returned an error code 134
pins2lts-mc, 0.000: Registering PINS so language module
pins2lts-mc, 0.000: Loading model from ./gal.so
pins2lts-mc, 0.000: library has no initializer
pins2lts-mc, 0.000: loading model GAL
pins2lts-mc, 0.004: completed loading model GAL
pins2lts-mc, 0.009: Initializing POR dependencies: labels 340, guards 340
pins2lts-mc, 0.067: There are 340 state labels and 1 edge labels
pins2lts-mc, 0.067: State length is 76, there are 340 groups
pins2lts-mc, 0.067: Running bfs using 1 core (sequential)
pins2lts-mc, 0.067: Using a non-indexing tree table with 2^27 elements
pins2lts-mc, 0.067: Successor permutation: none
pins2lts-mc, 0.067: Visible groups: 0 / 340, labels: 0 / 340
pins2lts-mc, 0.067: POR cycle proviso: none
pins2lts-mc, 0.067: Global bits: 0, count bits: 0, local bits: 0
pins2lts-mc, 0.167: 6 levels 1000 states 5900 transitions
pins2lts-mc, 0.281: 7 levels 2000 states 13324 transitions
pins2lts-mc, 0.511: 8 levels 4000 states 26524 transitions
pins2lts-mc, 0.977: 9 levels 8000 states 50752 transitions
pins2lts-mc, 1.901: 9 levels 16000 states 103252 transitions
pins2lts-mc, 3.704: 10 levels 32000 states 200652 transitions
pins2lts-mc, 7.294: 11 levels 64000 states 412599 transitions
pins2lts-mc, 14.603: 12 levels 128000 states 864830 transitions
pins2lts-mc, 28.937: 13 levels 256000 states 1700388 transitions
pins2lts-mc, 58.112: 13 levels 512000 states 3379009 transitions
pins2lts-mc, 116.027: 14 levels 1024000 states 6711500 transitions
pins2lts-mc, 235.101: 16 levels 2048000 states 13650705 transitions
pins2lts-mc, 471.138: 17 levels 4096000 states 26268620 transitions
pins2lts-mc, 955.831: 18 levels 8192000 states 50926725 transitions
pins2lts-mc, 1948.082: 20 levels 16384000 states 99055843 transitions
pins2lts-mc, 2703.839: Error: tree leafs table full! Change -s/--ratio.
pins2lts-mc, 2703.843:
pins2lts-mc, 2703.843:
pins2lts-mc, 2703.843: Explored 22422735 states 131649083 transitions, fanout: 5.871
pins2lts-mc, 2703.843: Total exploration time 2703.780 sec (2703.780 sec minimum, 2703.780 sec on average)
pins2lts-mc, 2703.843: States per second: 8293, Transitions per second: 48691
pins2lts-mc, 2703.843:
pins2lts-mc, 2703.843: Queue width: 8B, total height: 10463235, memory: 79.83MB
pins2lts-mc, 2703.843: Tree memory: 506.9MB, 16.2 B/state, compr.: 5.3%
pins2lts-mc, 2703.843: Tree fill ratio (roots/leafs): 24.0%/99.0%
pins2lts-mc, 2703.843: Stored 342 string chucks using 0MB
pins2lts-mc, 2703.843: Total memory used for chunk indexing: 0MB
pins2lts-mc, 2703.843: Est. total memory use: 586.7MB (~1103.8MB paged-in)
java.lang.RuntimeException: Unexpected exception when executing ltsmin :CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=1, -p, --pins-guards, --when, -d], workingDir=/home/mcc/execution]
255
at fr.lip6.move.gal.application.LTSminRunner.checkProperty(LTSminRunner.java:167)
at fr.lip6.move.gal.application.LTSminRunner.access$9(LTSminRunner.java:122)
at fr.lip6.move.gal.application.LTSminRunner$1.run(LTSminRunner.java:91)
at java.lang.Thread.run(Thread.java:748)
Sequence of Actions to be Executed by the VM
This is useful if one wants to reexecute the tool in the VM from the submitted image disk.
set -x
# this is for BenchKit: configuration of major elements for the test
export BK_INPUT="PermAdmissibility-PT-10"
export BK_EXAMINATION="ReachabilityDeadlock"
export BK_TOOL="itstoolsl"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"
# this is specific to your benchmark or test
export BIN_DIR="$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/PermAdmissibility-PT-10.tgz
mv PermAdmissibility-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 itstoolsl"
echo " Input is PermAdmissibility-PT-10, examination is ReachabilityDeadlock"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r117-csrt-152666477000496"
echo "====================================================================="
echo
echo "--------------------"
echo "content from stdout:"
echo
echo "=== Data for post analysis generated by BenchKit (invocation template)"
echo
if [ "ReachabilityDeadlock" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "ReachabilityDeadlock" != "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 "ReachabilityDeadlock.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property ReachabilityDeadlock.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "ReachabilityDeadlock.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
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 ;