About the Execution of ITS-Tools for S_HouseConstruction-PT-002
Execution Summary | |||||
Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
218.100 | 2958.00 | 5725.00 | 129.80 | FFTTFFFFTFFTTFFF | 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 2-3254
Executing tool itstools
Input is S_HouseConstruction-PT-002, examination is LTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r110-blw3-149441614700599
=====================================================================
--------------------
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 HouseConstruction-PT-002-LTLCardinality-0
FORMULA_NAME HouseConstruction-PT-002-LTLCardinality-1
FORMULA_NAME HouseConstruction-PT-002-LTLCardinality-10
FORMULA_NAME HouseConstruction-PT-002-LTLCardinality-11
FORMULA_NAME HouseConstruction-PT-002-LTLCardinality-12
FORMULA_NAME HouseConstruction-PT-002-LTLCardinality-13
FORMULA_NAME HouseConstruction-PT-002-LTLCardinality-14
FORMULA_NAME HouseConstruction-PT-002-LTLCardinality-15
FORMULA_NAME HouseConstruction-PT-002-LTLCardinality-2
FORMULA_NAME HouseConstruction-PT-002-LTLCardinality-3
FORMULA_NAME HouseConstruction-PT-002-LTLCardinality-4
FORMULA_NAME HouseConstruction-PT-002-LTLCardinality-5
FORMULA_NAME HouseConstruction-PT-002-LTLCardinality-6
FORMULA_NAME HouseConstruction-PT-002-LTLCardinality-7
FORMULA_NAME HouseConstruction-PT-002-LTLCardinality-8
FORMULA_NAME HouseConstruction-PT-002-LTLCardinality-9
=== Now, execution of the tool begins
BK_START 1496466624146
Using solver YICES2 to compute partial order matrices.
Built C files in :
/home/mcc/execution
its-ltl command run as :
/home/mcc/BenchKit/eclipse/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.201705302212/bin/its-ltl-linux64 --gc-threshold 2000000 -i /home/mcc/execution/LTLCardinality.pnml.gal -t CGAL -LTL /home/mcc/execution/LTLCardinality.ltl -c -stutter-deadlock
Read 16 LTL properties
Checking formula 0 : !((G((X("p19>=2"))U(G("p18<=p15")))))
Formula 0 simplified : !G(X"p19>=2" U G"p18<=p15")
Presburger conditions satisfied. Using coverability to approximate state space in K-Induction.
// Phase 1: matrix 18 rows 26 cols
4 unique states visited
4 strongly connected components in search stack
4 transitions explored
4 items max in DFS search stack
15 ticks for the emptiness check
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
STATS,0,0.165295,28864,1,0,167,21050,66,149,727,25013,325
an accepting run exists (use option '-e' to print it)
Formula 0 is FALSE accepting run found.
FORMULA HouseConstruction-PT-002-LTLCardinality-0 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Checking formula 1 : !(("p17>=2"))
Formula 1 simplified : !"p17>=2"
3 unique states visited
3 strongly connected components in search stack
3 transitions explored
3 items max in DFS search stack
2 ticks for the emptiness check
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
STATS,0,0.185965,29424,1,0,191,24024,69,197,729,28538,404
an accepting run exists (use option '-e' to print it)
Formula 1 is FALSE accepting run found.
FORMULA HouseConstruction-PT-002-LTLCardinality-1 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Checking formula 2 : !((X("p10<=p21")))
Formula 2 simplified : !X"p10<=p21"
2 unique states visited
0 strongly connected components in search stack
1 transitions explored
2 items max in DFS search stack
0 ticks for the emptiness check
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
STATS,0,0.18644,29424,1,0,191,24024,72,197,733,28540,406
no accepting run found
Formula 2 is TRUE no accepting run found.
FORMULA HouseConstruction-PT-002-LTLCardinality-2 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Checking formula 3 : !((G(F(("p20<=p16")U("p18>=3")))))
Formula 3 simplified : !GF("p20<=p16" U "p18>=3")
3 unique states visited
3 strongly connected components in search stack
3 transitions explored
3 items max in DFS search stack
0 ticks for the emptiness check
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
STATS,0,0.190142,29756,1,0,191,24066,81,200,735,28876,494
an accepting run exists (use option '-e' to print it)
Formula 3 is FALSE accepting run found.
FORMULA HouseConstruction-PT-002-LTLCardinality-3 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Checking formula 4 : !(("p27>=3"))
Formula 4 simplified : !"p27>=3"
3 unique states visited
3 strongly connected components in search stack
3 transitions explored
3 items max in DFS search stack
0 ticks for the emptiness check
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
STATS,0,0.190542,29756,1,0,191,24066,84,200,737,28877,496
an accepting run exists (use option '-e' to print it)
Formula 4 is FALSE accepting run found.
FORMULA HouseConstruction-PT-002-LTLCardinality-4 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Checking formula 5 : !((X(F(F(X("p9<=p8"))))))
Formula 5 simplified : !XFX"p9<=p8"
3 unique states visited
0 strongly connected components in search stack
2 transitions explored
3 items max in DFS search stack
0 ticks for the emptiness check
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
STATS,0,0.191063,29868,1,0,192,24067,93,201,740,28905,503
no accepting run found
Formula 5 is TRUE no accepting run found.
FORMULA HouseConstruction-PT-002-LTLCardinality-5 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Checking formula 6 : !(("p8<=p4"))
Formula 6 simplified : !"p8<=p4"
1 unique states visited
0 strongly connected components in search stack
0 transitions explored
1 items max in DFS search stack
0 ticks for the emptiness check
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
STATS,0,0.191312,29868,1,0,192,24067,96,201,743,28907,505
no accepting run found
Formula 6 is TRUE no accepting run found.
FORMULA HouseConstruction-PT-002-LTLCardinality-6 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Checking formula 7 : !((G((G("p23<=p19"))U("p14<=p10"))))
Formula 7 simplified : !G(G"p23<=p19" U "p14<=p10")
3 unique states visited
3 strongly connected components in search stack
3 transitions explored
3 items max in DFS search stack
4 ticks for the emptiness check
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
STATS,0,0.228107,31460,1,0,277,30559,109,283,759,36873,716
an accepting run exists (use option '-e' to print it)
Formula 7 is FALSE accepting run found.
FORMULA HouseConstruction-PT-002-LTLCardinality-7 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Checking formula 8 : !((G("p9>=2")))
Formula 8 simplified : !G"p9>=2"
3 unique states visited
3 strongly connected components in search stack
3 transitions explored
3 items max in DFS search stack
0 ticks for the emptiness check
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
STATS,0,0.228757,31600,1,0,277,30559,115,283,761,36874,721
an accepting run exists (use option '-e' to print it)
Formula 8 is FALSE accepting run found.
FORMULA HouseConstruction-PT-002-LTLCardinality-8 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Checking formula 9 : !(("p11>=1"))
Formula 9 simplified : !"p11>=1"
3 unique states visited
3 strongly connected components in search stack
3 transitions explored
3 items max in DFS search stack
0 ticks for the emptiness check
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
STATS,0,0.229033,31660,1,0,277,30559,118,283,762,36875,723
an accepting run exists (use option '-e' to print it)
Formula 9 is FALSE accepting run found.
FORMULA HouseConstruction-PT-002-LTLCardinality-9 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Checking formula 10 : !((F(F(G("p21<=p18")))))
Formula 10 simplified : !FG"p21<=p18"
1 unique states visited
0 strongly connected components in search stack
0 transitions explored
1 items max in DFS search stack
6 ticks for the emptiness check
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
STATS,0,0.286128,32920,1,0,458,36999,131,456,768,46253,1241
no accepting run found
Formula 10 is TRUE no accepting run found.
FORMULA HouseConstruction-PT-002-LTLCardinality-10 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Checking formula 11 : !(("p16<=p3"))
Formula 11 simplified : !"p16<=p3"
1 unique states visited
0 strongly connected components in search stack
0 transitions explored
1 items max in DFS search stack
0 ticks for the emptiness check
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
STATS,0,0.286614,32920,1,0,458,36999,134,456,771,46255,1243
no accepting run found
Formula 11 is TRUE no accepting run found.
FORMULA HouseConstruction-PT-002-LTLCardinality-11 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Checking formula 12 : !(((("p1<=p4")U("p22>=2"))U(G(G("p2>=1")))))
Formula 12 simplified : !(("p1<=p4" U "p22>=2") U G"p2>=1")
3 unique states visited
3 strongly connected components in search stack
3 transitions explored
3 items max in DFS search stack
0 ticks for the emptiness check
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
STATS,0,0.289333,34028,1,0,458,36999,171,456,804,46257,1254
an accepting run exists (use option '-e' to print it)
Formula 12 is FALSE accepting run found.
FORMULA HouseConstruction-PT-002-LTLCardinality-12 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Checking formula 13 : !((G("p27<=p7")))
Formula 13 simplified : !G"p27<=p7"
3 unique states visited
3 strongly connected components in search stack
3 transitions explored
3 items max in DFS search stack
5 ticks for the emptiness check
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
STATS,0,0.340411,34724,1,0,540,40812,177,534,810,51850,1455
an accepting run exists (use option '-e' to print it)
Formula 13 is FALSE accepting run found.
FORMULA HouseConstruction-PT-002-LTLCardinality-13 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Checking formula 14 : !(("p2>=1"))
Formula 14 simplified : !"p2>=1"
3 unique states visited
3 strongly connected components in search stack
3 transitions explored
3 items max in DFS search stack
0 ticks for the emptiness check
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
STATS,0,0.340976,34724,1,0,540,40812,178,534,810,51850,1457
an accepting run exists (use option '-e' to print it)
Formula 14 is FALSE accepting run found.
FORMULA HouseConstruction-PT-002-LTLCardinality-14 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Checking formula 15 : !((X((G("p18>=3"))U(G("p16<=p12")))))
Formula 15 simplified : !X(G"p18>=3" U G"p16<=p12")
5 unique states visited
5 strongly connected components in search stack
5 transitions explored
5 items max in DFS search stack
5 ticks for the emptiness check
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
STATS,0,0.395079,36380,1,0,659,47541,198,649,824,61267,1718
an accepting run exists (use option '-e' to print it)
Formula 15 is FALSE accepting run found.
FORMULA HouseConstruction-PT-002-LTLCardinality-15 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Exit code :0
BK_STOP 1496466627104
--------------------
content from stderr:
+ export BINDIR=/home/mcc/BenchKit/
+ BINDIR=/home/mcc/BenchKit/
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ LTLCardinality = StateSpace ]]
+ /home/mcc/BenchKit//runeclipse.sh /home/mcc/execution LTLCardinality -its -ltsminpath /home/mcc/BenchKit//lts_install_dir/ -smt
+ ulimit -s 65536
+ java -Dosgi.requiredJavaVersion=1.6 -Xss8m -Xms40m -Xmx8192m -Declipse.pde.launch=true -Dfile.encoding=UTF-8 -classpath /home/mcc/BenchKit//eclipse/plugins/org.eclipse.equinox.launcher_1.3.201.v20161025-1711.jar org.eclipse.equinox.launcher.Main -application fr.lip6.move.gal.application.pnmcc -data /home/mcc/BenchKit//workspace -os linux -ws gtk -arch x86_64 -nl en_US -consoleLog -pnfolder /home/mcc/execution -examination LTLCardinality -yices2path /home/mcc/BenchKit//yices/bin/yices -its -ltsminpath /home/mcc/BenchKit//lts_install_dir/ -smt
Jun 03, 2017 5:10:25 AM fr.lip6.move.gal.application.MccTranslator transformPNML
INFO: Parsing pnml file : /home/mcc/execution/model.pnml
Jun 03, 2017 5:10:25 AM fr.lip6.move.gal.nupn.PTNetReader loadFromXML
INFO: Load time of PNML (sax parser for PT used): 35 ms
Jun 03, 2017 5:10:25 AM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 26 places.
Jun 03, 2017 5:10:25 AM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 18 transitions.
Jun 03, 2017 5:10:26 AM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 38 ms
Jun 03, 2017 5:10:26 AM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/LTLCardinality.pnml.gal : 10 ms
Jun 03, 2017 5:10:26 AM fr.lip6.move.serialization.SerializationUtil serializePropertiesForITSLTLTools
INFO: Time to serialize properties into /home/mcc/execution/LTLCardinality.ltl : 1 ms
Jun 03, 2017 5:10:26 AM fr.lip6.move.gal.gal2smt.bmc.KInductionSolver computeAndDeclareInvariants
INFO: Computed 0 place invariants in 7 ms
Jun 03, 2017 5:10:26 AM fr.lip6.move.gal.gal2smt.bmc.KInductionSolver init
INFO: Proved 26 variables to be positive in 37 ms
Jun 03, 2017 5:10:26 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeAblingMatrix
INFO: Computing symmetric may disable matrix : 18 transitions.
Jun 03, 2017 5:10:26 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Completed :0/18 took 1 ms. Total solver calls (SAT/UNSAT): 2(1/1)
Jun 03, 2017 5:10:26 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Complete disable matrix. took 28 ms. Total solver calls (SAT/UNSAT): 42(18/24)
Jun 03, 2017 5:10:26 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeAblingMatrix
INFO: Computing symmetric may enable matrix : 18 transitions.
Jun 03, 2017 5:10:26 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Complete enable matrix. took 21 ms. Total solver calls (SAT/UNSAT): 42(24/18)
Jun 03, 2017 5:10:26 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeCoEnablingMatrix
INFO: Computing symmetric co enabling matrix : 18 transitions.
Jun 03, 2017 5:10:26 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Finished enabling matrix. took 63 ms. Total solver calls (SAT/UNSAT): 171(171/0)
Jun 03, 2017 5:10:26 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeDoNotAccord
INFO: Computing Do-Not-Accords matrix : 18 transitions.
Jun 03, 2017 5:10:26 AM fr.lip6.move.gal.itstools.Runner runTool
INFO: Standard error output from running tool CommandLine [args=[/home/mcc/BenchKit/eclipse/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.201705302212/bin/its-ltl-linux64, --gc-threshold, 2000000, -i, /home/mcc/execution/LTLCardinality.pnml.gal, -t, CGAL, -LTL, /home/mcc/execution/LTLCardinality.ltl, -c, -stutter-deadlock], workingDir=/home/mcc/execution]
Reverse transition relation is NOT exact ! Due to transitions t18, Intersection with reachable at each step enabled. (destroyed/reverse/intersect/total) :0/17/1/18
Computing Next relation with stutter on 1 deadlock states
Computing Next relation with stutter on 1 deadlock states
Computing Next relation with stutter on 1 deadlock states
Computing Next relation with stutter on 1 deadlock states
Computing Next relation with stutter on 1 deadlock states
Computing Next relation with stutter on 1 deadlock states
Computing Next relation with stutter on 1 deadlock states
Computing Next relation with stutter on 1 deadlock states
Computing Next relation with stutter on 1 deadlock states
Computing Next relation with stutter on 1 deadlock states
Computing Next relation with stutter on 1 deadlock states
Computing Next relation with stutter on 1 deadlock states
Computing Next relation with stutter on 1 deadlock states
Computing Next relation with stutter on 1 deadlock states
Computing Next relation with stutter on 1 deadlock states
Computing Next relation with stutter on 1 deadlock states
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_HouseConstruction-PT-002"
export BK_EXAMINATION="LTLCardinality"
export BK_TOOL="itstools"
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/S_HouseConstruction-PT-002.tgz
mv S_HouseConstruction-PT-002 execution
# this is for BenchKit: explicit launching of the test
cd execution
echo "====================================================================="
echo " Generated by BenchKit 2-3254"
echo " Executing tool itstools"
echo " Input is S_HouseConstruction-PT-002, 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 r110-blw3-149441614700599"
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 '
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 ;