fond
Model Checking Contest @ Petri Nets 2015
Bruxelles, Belgium, June 23, 2015
Execution of r159st-ebro-143319436300334
Last Updated
August 19, 2015

About the Execution of ITS-Tools for S_HouseConstruction-PT-005

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
360.640 7049.00 18872.00 277.80 FFFFFFFTTTTTTFTT 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 2-2265
Executing tool itstools
Input is S_HouseConstruction-PT-005, examination is ReachabilityCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r159st-ebro-143319436300334
=====================================================================


--------------------
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-005-ReachabilityCardinality-0
FORMULA_NAME HouseConstruction-PT-005-ReachabilityCardinality-1
FORMULA_NAME HouseConstruction-PT-005-ReachabilityCardinality-10
FORMULA_NAME HouseConstruction-PT-005-ReachabilityCardinality-11
FORMULA_NAME HouseConstruction-PT-005-ReachabilityCardinality-12
FORMULA_NAME HouseConstruction-PT-005-ReachabilityCardinality-13
FORMULA_NAME HouseConstruction-PT-005-ReachabilityCardinality-14
FORMULA_NAME HouseConstruction-PT-005-ReachabilityCardinality-15
FORMULA_NAME HouseConstruction-PT-005-ReachabilityCardinality-2
FORMULA_NAME HouseConstruction-PT-005-ReachabilityCardinality-3
FORMULA_NAME HouseConstruction-PT-005-ReachabilityCardinality-4
FORMULA_NAME HouseConstruction-PT-005-ReachabilityCardinality-5
FORMULA_NAME HouseConstruction-PT-005-ReachabilityCardinality-6
FORMULA_NAME HouseConstruction-PT-005-ReachabilityCardinality-7
FORMULA_NAME HouseConstruction-PT-005-ReachabilityCardinality-8
FORMULA_NAME HouseConstruction-PT-005-ReachabilityCardinality-9

=== Now, execution of the tool begins

BK_START 1433270554347

FORMULA HouseConstruction-PT-005-ReachabilityCardinality-13 FALSE TECHNIQUES TOPOLOGICAL
FORMULA HouseConstruction-PT-005-ReachabilityCardinality-12 FALSE TECHNIQUES TOPOLOGICAL
FORMULA HouseConstruction-PT-005-ReachabilityCardinality-11 FALSE TECHNIQUES TOPOLOGICAL
FORMULA HouseConstruction-PT-005-ReachabilityCardinality-10 FALSE TECHNIQUES TOPOLOGICAL
FORMULA HouseConstruction-PT-005-ReachabilityCardinality-5 TRUE TECHNIQUES TOPOLOGICAL
work folder: /home/mcc/execution
unsat
unsat
unsat
unsat
unsat
unsat
unsat
unsat
unsat
unsat
unsat
unsat
unsat
unsat
unsat
unsat
unsat
unsat
Invariant property HouseConstruction-PT-005-ReachabilityCardinality-0 does not hold.
FORMULA HouseConstruction-PT-005-ReachabilityCardinality-0 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
Invariant property HouseConstruction-PT-005-ReachabilityCardinality-1 does not hold.
FORMULA HouseConstruction-PT-005-ReachabilityCardinality-1 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
Reachability property HouseConstruction-PT-005-ReachabilityCardinality-2 is true.
FORMULA HouseConstruction-PT-005-ReachabilityCardinality-2 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
Reachability property HouseConstruction-PT-005-ReachabilityCardinality-3 is true.
FORMULA HouseConstruction-PT-005-ReachabilityCardinality-3 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
Reachability property HouseConstruction-PT-005-ReachabilityCardinality-4 is true.
FORMULA HouseConstruction-PT-005-ReachabilityCardinality-4 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
Reachability property HouseConstruction-PT-005-ReachabilityCardinality-6 is true.
FORMULA HouseConstruction-PT-005-ReachabilityCardinality-6 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
Invariant property HouseConstruction-PT-005-ReachabilityCardinality-7 does not hold.
FORMULA HouseConstruction-PT-005-ReachabilityCardinality-7 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
Reachability property HouseConstruction-PT-005-ReachabilityCardinality-8 is true.
FORMULA HouseConstruction-PT-005-ReachabilityCardinality-8 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
Reachability property HouseConstruction-PT-005-ReachabilityCardinality-9 is true.
FORMULA HouseConstruction-PT-005-ReachabilityCardinality-9 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
Invariant property HouseConstruction-PT-005-ReachabilityCardinality-14 does not hold.
FORMULA HouseConstruction-PT-005-ReachabilityCardinality-14 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
Reachability property HouseConstruction-PT-005-ReachabilityCardinality-15 is true.
FORMULA HouseConstruction-PT-005-ReachabilityCardinality-15 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING

BK_STOP 1433270561396

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

Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=512m; support was removed in 8.0
Jun 02, 2015 6:42:38 PM fr.lip6.move.gal.application.Application transformPNML
INFO: Parsing pnml file : /home/mcc/execution/model.pnml
Jun 02, 2015 6:42:38 PM fr.lip6.move.gal.nupn.PTNetReader loadFromXML
INFO: Load time of PNML (sax parser for PT used): 34 ms
Jun 02, 2015 6:42:38 PM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 26 places.
Jun 02, 2015 6:42:39 PM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 18 transitions.
Jun 02, 2015 6:42:39 PM fr.lip6.move.gal.instantiate.PropertySimplifier rewriteWithInitialState
INFO: Reachable property HouseConstruction-PT-005-ReachabilityCardinality-5 is trivially true : it is verified in initial state.
Jun 02, 2015 6:42:39 PM fr.lip6.move.gal.instantiate.PropertySimplifier rewriteWithInitialState
INFO: Invariant property HouseConstruction-PT-005-ReachabilityCardinality-10 is trivially false : it is not verified in initial state.
Jun 02, 2015 6:42:39 PM fr.lip6.move.gal.instantiate.PropertySimplifier rewriteWithInitialState
INFO: Invariant property HouseConstruction-PT-005-ReachabilityCardinality-11 is trivially false : it is not verified in initial state.
Jun 02, 2015 6:42:39 PM fr.lip6.move.gal.instantiate.PropertySimplifier rewriteWithInitialState
INFO: Invariant property HouseConstruction-PT-005-ReachabilityCardinality-12 is trivially false : it is not verified in initial state.
Jun 02, 2015 6:42:39 PM fr.lip6.move.gal.instantiate.PropertySimplifier rewriteWithInitialState
INFO: Invariant property HouseConstruction-PT-005-ReachabilityCardinality-13 is trivially false : it is not verified in initial state.
Jun 02, 2015 6:42:39 PM fr.lip6.move.gal.instantiate.PropertySimplifier rewriteWithInitialState
INFO: Reachable property HouseConstruction-PT-005-ReachabilityCardinality-5 is trivially true : it is verified in initial state.
Jun 02, 2015 6:42:39 PM fr.lip6.move.gal.instantiate.PropertySimplifier rewriteWithInitialState
INFO: Invariant property HouseConstruction-PT-005-ReachabilityCardinality-10 is trivially false : it is not verified in initial state.
Jun 02, 2015 6:42:39 PM fr.lip6.move.gal.instantiate.PropertySimplifier rewriteWithInitialState
INFO: Invariant property HouseConstruction-PT-005-ReachabilityCardinality-11 is trivially false : it is not verified in initial state.
Jun 02, 2015 6:42:39 PM fr.lip6.move.gal.instantiate.PropertySimplifier rewriteWithInitialState
INFO: Invariant property HouseConstruction-PT-005-ReachabilityCardinality-12 is trivially false : it is not verified in initial state.
Jun 02, 2015 6:42:39 PM fr.lip6.move.gal.instantiate.PropertySimplifier rewriteWithInitialState
INFO: Invariant property HouseConstruction-PT-005-ReachabilityCardinality-13 is trivially false : it is not verified in initial state.
Jun 02, 2015 6:42:39 PM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 217 ms
Jun 02, 2015 6:42:39 PM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/ReachabilityCardinality.gal : 13 ms
Jun 02, 2015 6:42:39 PM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 25 ms
Jun 02, 2015 6:42:39 PM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 34 ms
Jun 02, 2015 6:42:39 PM fr.lip6.move.gal.cegar.support.SupportManager computeSupport
INFO: For property HouseConstruction-PT-005-ReachabilityCardinality-0:[invariant] : ((((p11<=p10)&&(p22<=p2))||(!(p13>=2)))||(p14<=p23)) found Support [p11, p10, p22, p2, p13, p14, p23]
Jun 02, 2015 6:42:39 PM fr.lip6.move.gal.cegar.support.SupportManager computeSupport
INFO: Computing abstraction support, depth 0, found support 7
Jun 02, 2015 6:42:39 PM fr.lip6.move.gal.cegar.abstractor.BoundComputer compute
INFO: Bounding GAL to K = 5
Jun 02, 2015 6:42:39 PM fr.lip6.move.gal.cegar.abstractor.VariablesAbstractor abstractUsingSupport
INFO: Abstracting GAL, removed 19 / 26 variable(s)
Jun 02, 2015 6:42:39 PM fr.lip6.move.gal.cegar.checkers.CEGARChecker check
INFO: Checking abstraction for property HouseConstruction-PT-005-ReachabilityCardinality-0(refined 0 times)...
Jun 02, 2015 6:42:39 PM fr.lip6.move.gal.cegar.checkers.CEGARChecker check
INFO: Running its-reach -reachable on the abstraction...
Jun 02, 2015 6:42:39 PM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: No display to refresh.
Jun 02, 2015 6:42:39 PM fr.lip6.move.serialization.SerializationUtil serializePropertiesForITSTools
INFO: Time to serialize properties into /home/mcc/execution/ReachabilityCardinality.prop : 4 ms
Jun 02, 2015 6:42:39 PM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 34 ms
Jun 02, 2015 6:42:39 PM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/work/abstract.gal : 2 ms
Jun 02, 2015 6:42:39 PM fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd checkProperties
INFO: SMT solution for property HouseConstruction-PT-005-ReachabilityCardinality-0(UNSAT) depth K=1 took 443 ms
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd checkProperties
INFO: SMT solution for property HouseConstruction-PT-005-ReachabilityCardinality-1(UNSAT) depth K=1 took 60 ms
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd checkProperties
INFO: SMT solution for property HouseConstruction-PT-005-ReachabilityCardinality-2(UNSAT) depth K=1 took 52 ms
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd checkProperties
INFO: SMT solution for property HouseConstruction-PT-005-ReachabilityCardinality-3(UNSAT) depth K=1 took 58 ms
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.cegar.checkers.ITSLauncher run
INFO: Run of its-reach took 568 ms
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.cegar.checkers.CEGARChecker check
INFO: Found trace: [t6, t6, t6, t7, t5, t8]
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.cegar.checkers.CEGARChecker check
INFO: Running its-reach -trace [t6, t6, t6, t7, t5, t8] on the original GAL...
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd checkProperties
INFO: SMT solution for property HouseConstruction-PT-005-ReachabilityCardinality-4(UNSAT) depth K=1 took 48 ms
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 26 ms
Jun 02, 2015 6:42:40 PM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/work/abstract.gal : 2 ms
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd checkProperties
INFO: SMT solution for property HouseConstruction-PT-005-ReachabilityCardinality-6(UNSAT) depth K=1 took 46 ms
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd checkProperties
INFO: SMT solution for property HouseConstruction-PT-005-ReachabilityCardinality-7(UNSAT) depth K=1 took 52 ms
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.cegar.checkers.ITSLauncher run
INFO: Run of its-reach took 101 ms
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.cegar.checkers.CEGARChecker check
INFO: Transition t6 couldn't be replayed on the original GAL
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.cegar.abstractor.SupportBasedAbstractor refine
INFO: Using failed transition t6 to refine the abstraction...
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.cegar.abstractor.BoundComputer compute
INFO: Bounding GAL to K = 5
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.cegar.abstractor.VariablesAbstractor abstractUsingSupport
INFO: Abstracting GAL, removed 18 / 26 variable(s)
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.cegar.checkers.CEGARChecker check
INFO: Checking abstraction for property HouseConstruction-PT-005-ReachabilityCardinality-0(refined 1 times)...
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.cegar.checkers.CEGARChecker check
INFO: Running its-reach -reachable on the abstraction...
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd checkProperties
INFO: SMT solution for property HouseConstruction-PT-005-ReachabilityCardinality-8(UNSAT) depth K=1 took 32 ms
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 13 ms
Jun 02, 2015 6:42:40 PM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/work/abstract.gal : 2 ms
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd checkProperties
INFO: SMT solution for property HouseConstruction-PT-005-ReachabilityCardinality-9(UNSAT) depth K=1 took 30 ms
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd checkProperties
INFO: SMT solution for property HouseConstruction-PT-005-ReachabilityCardinality-14(UNSAT) depth K=1 took 48 ms
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd checkProperties
INFO: SMT solution for property HouseConstruction-PT-005-ReachabilityCardinality-15(UNSAT) depth K=1 took 31 ms
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd checkProperties
INFO: SMT solution for property HouseConstruction-PT-005-ReachabilityCardinality-0(UNSAT) depth K=6 took 79 ms
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd checkProperties
INFO: SMT solution for property HouseConstruction-PT-005-ReachabilityCardinality-1(UNSAT) depth K=6 took 67 ms
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd checkProperties
INFO: SMT solution for property HouseConstruction-PT-005-ReachabilityCardinality-2(UNSAT) depth K=6 took 53 ms
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd checkProperties
INFO: SMT solution for property HouseConstruction-PT-005-ReachabilityCardinality-3(UNSAT) depth K=6 took 68 ms
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd checkProperties
INFO: SMT solution for property HouseConstruction-PT-005-ReachabilityCardinality-4(UNSAT) depth K=6 took 69 ms
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd checkProperties
INFO: SMT solution for property HouseConstruction-PT-005-ReachabilityCardinality-6(UNSAT) depth K=6 took 56 ms
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.cegar.checkers.ITSLauncher run
INFO: Run of its-reach took 567 ms
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.cegar.checkers.CEGARChecker check
INFO: Found trace: [t3, t3, t3, t6, t6, t6, t7, t5, t8]
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.cegar.checkers.CEGARChecker check
INFO: Running its-reach -trace [t3, t3, t3, t6, t6, t6, t7, t5, t8] on the original GAL...
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 39 ms
Jun 02, 2015 6:42:40 PM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/work/abstract.gal : 3 ms
Jun 02, 2015 6:42:40 PM fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd checkProperties
INFO: SMT solution for property HouseConstruction-PT-005-ReachabilityCardinality-7(UNSAT) depth K=6 took 119 ms
Jun 02, 2015 6:42:41 PM fr.lip6.move.gal.cegar.checkers.ITSLauncher run
INFO: Run of its-reach took 125 ms
Jun 02, 2015 6:42:41 PM fr.lip6.move.gal.cegar.checkers.CEGARChecker check
INFO: Transition t3 couldn't be replayed on the original GAL
Jun 02, 2015 6:42:41 PM fr.lip6.move.gal.cegar.abstractor.SupportBasedAbstractor refine
INFO: Using failed transition t3 to refine the abstraction...
Jun 02, 2015 6:42:41 PM fr.lip6.move.gal.cegar.abstractor.BoundComputer compute
INFO: Bounding GAL to K = 5
Jun 02, 2015 6:42:41 PM fr.lip6.move.gal.cegar.abstractor.VariablesAbstractor abstractUsingSupport
INFO: Abstracting GAL, removed 17 / 26 variable(s)

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-005"
export BK_EXAMINATION="ReachabilityCardinality"
export BK_TOOL="itstools"
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_HouseConstruction-PT-005.tgz
mv S_HouseConstruction-PT-005 execution

# this is for BenchKit: explicit launching of the test

cd execution
echo "====================================================================="
echo " Generated by BenchKit 2-2265"
echo " Executing tool itstools"
echo " Input is S_HouseConstruction-PT-005, examination is ReachabilityCardinality"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r159st-ebro-143319436300334"
echo "====================================================================="
echo
echo "--------------------"
echo "content from stdout:"
echo
echo "=== Data for post analysis generated by BenchKit (invocation template)"
echo
if [ "ReachabilityCardinality" = "ReachabilityComputeBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "ReachabilityCardinality" != "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 "ReachabilityCardinality.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property ReachabilityCardinality.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "ReachabilityCardinality.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 '' ReachabilityCardinality.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 ;