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_SimpleLoadBal-PT-15, examination is ReachabilityDeadlock
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r150-csrt-149443435000386
=====================================================================

--------------------
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 SimpleLoadBal-COL-15-ReachabilityDeadlock-0

=== Now, execution of the tool begins

BK_START 1496668192448


Using solver YICES2 to compute partial order matrices.
Built C files in :
/home/mcc/execution
its-ctl command run as :

/home/mcc/BenchKit/eclipse/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.201705302212/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.
Presburger conditions satisfied. Using coverability to approximate state space in K-Induction.
// Phase 1: matrix 1280 rows 149 cols
invariant : 1'P_client_idle_14 + 1'P_client_waiting_14= 1
invariant : 1'P_server_idle_2 + 1'P_server_waiting_2 + 1'P_server_processed_2= 1
invariant : 1'P_client_idle_15 + 1'P_client_request_15 + 1'P_client_ack_15 + 1'P_server_request_15_1 + 1'P_server_request_15_2 + 1'P_lb_routing_1_15= 1
invariant : 1'P_client_idle_2 + 1'P_client_request_2 + 1'P_client_ack_2 + 1'P_server_request_2_1 + 1'P_server_request_2_2 + 1'P_lb_routing_1_2= 1
invariant : 1'P_client_idle_6 + 1'P_client_request_6 + 1'P_client_ack_6 + 1'P_server_request_6_1 + 1'P_server_request_6_2 + 1'P_lb_routing_1_6= 1
invariant : 1'P_client_idle_11 + 1'P_client_request_11 + 1'P_client_ack_11 + 1'P_server_request_11_1 + 1'P_server_request_11_2 + 1'P_lb_routing_1_11= 1
invariant : 1'P_client_idle_10 + 1'P_client_request_10 + 1'P_client_ack_10 + 1'P_server_request_10_1 + 1'P_server_request_10_2 + 1'P_lb_routing_1_10= 1
invariant : 1'P_client_idle_14 + 1'P_client_request_14 + 1'P_client_ack_14 + 1'P_server_request_14_1 + 1'P_server_request_14_2 + 1'P_lb_routing_1_14= 1
invariant : 1'P_client_idle_2 + 1'P_client_waiting_2= 1
invariant : 1'P_client_idle_8 + 1'P_client_waiting_8= 1
invariant : 1'P_client_idle_3 + 1'P_client_waiting_3= 1
invariant : 1'P_server_idle_1 + 1'P_server_waiting_1 + 1'P_server_processed_1= 1
invariant : 1'P_client_idle_8 + 1'P_client_request_8 + 1'P_client_ack_8 + 1'P_server_request_8_1 + 1'P_server_request_8_2 + 1'P_lb_routing_1_8= 1
invariant : 1'P_client_idle_5 + 1'P_client_waiting_5= 1
invariant : 1'P_client_idle_15 + 1'P_client_waiting_15= 1
invariant : 1'P_server_idle_1 + 1'P_server_waiting_1 + -1'P_server_notification_1 + -1'P_server_request_1_1 + -1'P_server_request_2_1 + -1'P_server_request_3_1 + -1'P_server_request_4_1 + -1'P_server_request_5_1 + -1'P_server_request_6_1 + -1'P_server_request_7_1 + -1'P_server_request_8_1 + -1'P_server_request_9_1 + -1'P_server_request_10_1 + -1'P_server_request_11_1 + -1'P_server_request_12_1 + -1'P_server_request_13_1 + -1'P_server_request_14_1 + -1'P_server_request_15_1 + -14'P_lb_load_1_0 + -13'P_lb_load_1_1 + -12'P_lb_load_1_2 + -11'P_lb_load_1_3 + -10'P_lb_load_1_4 + -9'P_lb_load_1_5 + -8'P_lb_load_1_6 + -7'P_lb_load_1_7 + -6'P_lb_load_1_8 + -5'P_lb_load_1_9 + -4'P_lb_load_1_10 + -3'P_lb_load_1_11 + -2'P_lb_load_1_12 + -1'P_lb_load_1_13 + 1'P_lb_load_1_15= -13
invariant : 1'P_client_idle_4 + 1'P_client_waiting_4= 1
invariant : 1'P_client_idle_6 + 1'P_client_waiting_6= 1
invariant : 1'P_client_idle_9 + 1'P_client_waiting_9= 1
invariant : -1'P_server_idle_2 + -1'P_server_waiting_2 + 1'P_server_notification_2 + 1'P_server_request_1_2 + 1'P_server_request_2_2 + 1'P_server_request_3_2 + 1'P_server_request_4_2 + 1'P_server_request_5_2 + 1'P_server_request_6_2 + 1'P_server_request_7_2 + 1'P_server_request_8_2 + 1'P_server_request_9_2 + 1'P_server_request_10_2 + 1'P_server_request_11_2 + 1'P_server_request_12_2 + 1'P_server_request_13_2 + 1'P_server_request_14_2 + 1'P_server_request_15_2 + 15'P_lb_load_2_0 + 14'P_lb_load_2_1 + 13'P_lb_load_2_2 + 12'P_lb_load_2_3 + 11'P_lb_load_2_4 + 10'P_lb_load_2_5 + 9'P_lb_load_2_6 + 8'P_lb_load_2_7 + 7'P_lb_load_2_8 + 6'P_lb_load_2_9 + 5'P_lb_load_2_10 + 4'P_lb_load_2_11 + 3'P_lb_load_2_12 + 2'P_lb_load_2_13 + 1'P_lb_load_2_14= 14
invariant : -1'P_server_idle_1 + -1'P_server_waiting_1 + 1'P_server_notification_1 + 1'P_server_request_1_1 + 1'P_server_request_2_1 + 1'P_server_request_3_1 + 1'P_server_request_4_1 + 1'P_server_request_5_1 + 1'P_server_request_6_1 + 1'P_server_request_7_1 + 1'P_server_request_8_1 + 1'P_server_request_9_1 + 1'P_server_request_10_1 + 1'P_server_request_11_1 + 1'P_server_request_12_1 + 1'P_server_request_13_1 + 1'P_server_request_14_1 + 1'P_server_request_15_1 + 15'P_lb_load_1_0 + 14'P_lb_load_1_1 + 13'P_lb_load_1_2 + 12'P_lb_load_1_3 + 11'P_lb_load_1_4 + 10'P_lb_load_1_5 + 9'P_lb_load_1_6 + 8'P_lb_load_1_7 + 7'P_lb_load_1_8 + 6'P_lb_load_1_9 + 5'P_lb_load_1_10 + 4'P_lb_load_1_11 + 3'P_lb_load_1_12 + 2'P_lb_load_1_13 + 1'P_lb_load_1_14= 14
invariant : -1'P_server_waiting_1 + 1'P_server_notification_1 + 1'P_server_notification_ack_1= 0
invariant : 1'P_client_idle_13 + 1'P_client_waiting_13= 1
invariant : 1'P_client_idle_7 + 1'P_client_request_7 + 1'P_client_ack_7 + 1'P_server_request_7_1 + 1'P_server_request_7_2 + 1'P_lb_routing_1_7= 1
invariant : -1'P_client_idle_1 + -1'P_client_idle_2 + -1'P_client_idle_3 + -1'P_client_idle_4 + -1'P_client_idle_5 + -1'P_client_idle_6 + -1'P_client_idle_7 + -1'P_client_idle_8 + -1'P_client_idle_9 + -1'P_client_idle_10 + -1'P_client_idle_11 + -1'P_client_idle_12 + -1'P_client_idle_13 + -1'P_client_idle_14 + -1'P_client_idle_15 + -1'P_client_request_1 + -1'P_client_request_2 + -1'P_client_request_3 + -1'P_client_request_4 + -1'P_client_request_5 + -1'P_client_request_6 + -1'P_client_request_7 + -1'P_client_request_8 + -1'P_client_request_9 + -1'P_client_request_10 + -1'P_client_request_11 + -1'P_client_request_12 + -1'P_client_request_13 + -1'P_client_request_14 + -1'P_client_request_15 + -1'P_client_ack_1 + -1'P_client_ack_2 + -1'P_client_ack_3 + -1'P_client_ack_4 + -1'P_client_ack_5 + -1'P_client_ack_6 + -1'P_client_ack_7 + -1'P_client_ack_8 + -1'P_client_ack_9 + -1'P_client_ack_10 + -1'P_client_ack_11 + -1'P_client_ack_12 + -1'P_client_ack_13 + -1'P_client_ack_14 + -1'P_client_ack_15 + -1'P_server_request_1_1 + -1'P_server_request_1_2 + -1'P_server_request_2_1 + -1'P_server_request_2_2 + -1'P_server_request_3_1 + -1'P_server_request_3_2 + -1'P_server_request_4_1 + -1'P_server_request_4_2 + -1'P_server_request_5_1 + -1'P_server_request_5_2 + -1'P_server_request_6_1 + -1'P_server_request_6_2 + -1'P_server_request_7_1 + -1'P_server_request_7_2 + -1'P_server_request_8_1 + -1'P_server_request_8_2 + -1'P_server_request_9_1 + -1'P_server_request_9_2 + -1'P_server_request_10_1 + -1'P_server_request_10_2 + -1'P_server_request_11_1 + -1'P_server_request_11_2 + -1'P_server_request_12_1 + -1'P_server_request_12_2 + -1'P_server_request_13_1 + -1'P_server_request_13_2 + -1'P_server_request_14_1 + -1'P_server_request_14_2 + -1'P_server_request_15_1 + -1'P_server_request_15_2 + 1'P_lb_idle_1 + 1'P_lb_balancing_1= -14
invariant : 1'P_client_idle_11 + 1'P_client_waiting_11= 1
invariant : 1'P_client_idle_3 + 1'P_client_request_3 + 1'P_client_ack_3 + 1'P_server_request_3_1 + 1'P_server_request_3_2 + 1'P_lb_routing_1_3= 1
invariant : 1'P_client_idle_9 + 1'P_client_request_9 + 1'P_client_ack_9 + 1'P_server_request_9_1 + 1'P_server_request_9_2 + 1'P_lb_routing_1_9= 1
invariant : 1'P_client_idle_10 + 1'P_client_waiting_10= 1
invariant : 1'P_client_idle_4 + 1'P_client_request_4 + 1'P_client_ack_4 + 1'P_server_request_4_1 + 1'P_server_request_4_2 + 1'P_lb_routing_1_4= 1
invariant : 1'P_client_idle_12 + 1'P_client_request_12 + 1'P_client_ack_12 + 1'P_server_request_12_1 + 1'P_server_request_12_2 + 1'P_lb_routing_1_12= 1
invariant : 1'P_client_idle_1 + 1'P_client_request_1 + 1'P_client_ack_1 + 1'P_server_request_1_1 + 1'P_server_request_1_2 + 1'P_lb_routing_1_1= 1
invariant : 1'P_client_idle_13 + 1'P_client_request_13 + 1'P_client_ack_13 + 1'P_server_request_13_1 + 1'P_server_request_13_2 + 1'P_lb_routing_1_13= 1
invariant : 1'P_server_idle_2 + 1'P_server_waiting_2 + -1'P_server_notification_2 + -1'P_server_request_1_2 + -1'P_server_request_2_2 + -1'P_server_request_3_2 + -1'P_server_request_4_2 + -1'P_server_request_5_2 + -1'P_server_request_6_2 + -1'P_server_request_7_2 + -1'P_server_request_8_2 + -1'P_server_request_9_2 + -1'P_server_request_10_2 + -1'P_server_request_11_2 + -1'P_server_request_12_2 + -1'P_server_request_13_2 + -1'P_server_request_14_2 + -1'P_server_request_15_2 + -14'P_lb_load_2_0 + -13'P_lb_load_2_1 + -12'P_lb_load_2_2 + -11'P_lb_load_2_3 + -10'P_lb_load_2_4 + -9'P_lb_load_2_5 + -8'P_lb_load_2_6 + -7'P_lb_load_2_7 + -6'P_lb_load_2_8 + -5'P_lb_load_2_9 + -4'P_lb_load_2_10 + -3'P_lb_load_2_11 + -2'P_lb_load_2_12 + -1'P_lb_load_2_13 + 1'P_lb_load_2_15= -13
invariant : 1'P_client_idle_1 + 1'P_client_waiting_1= 1
invariant : 1'P_client_idle_5 + 1'P_client_request_5 + 1'P_client_ack_5 + 1'P_server_request_5_1 + 1'P_server_request_5_2 + 1'P_lb_routing_1_5= 1
invariant : 1'P_client_idle_7 + 1'P_client_waiting_7= 1
invariant : 1'P_client_idle_12 + 1'P_client_waiting_12= 1
invariant : -1'P_server_waiting_2 + 1'P_server_notification_2 + 1'P_server_notification_ack_2= 0
Exit code :137

BK_TIME_CONFINEMENT_REACHED

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

+ export BINDIR=/home/mcc/BenchKit/
+ BINDIR=/home/mcc/BenchKit/
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ ReachabilityDeadlock = StateSpace ]]
+ /home/mcc/BenchKit//runeclipse.sh /home/mcc/execution ReachabilityDeadlock -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 ReachabilityDeadlock -yices2path /home/mcc/BenchKit//yices/bin/yices -its -ltsminpath /home/mcc/BenchKit//lts_install_dir/ -smt
Jun 05, 2017 1:09:54 PM fr.lip6.move.gal.application.MccTranslator transformPNML
INFO: Parsing pnml file : /home/mcc/execution/model.pnml
Jun 05, 2017 1:09:54 PM fr.lip6.move.gal.nupn.PTNetReader loadFromXML
INFO: Load time of PNML (sax parser for PT used): 213 ms
Jun 05, 2017 1:09:54 PM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 149 places.
Jun 05, 2017 1:09:54 PM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 1280 transitions.
Jun 05, 2017 1:09:54 PM fr.lip6.move.gal.logic.togal.ToGalTransformer toGal
WARNING: Unknown predicate type in boolean expression fr.lip6.move.gal.logic.impl.DeadlockImpl
Jun 05, 2017 1:09:55 PM fr.lip6.move.gal.instantiate.PropertySimplifier rewriteWithInitialState
INFO: Reachable property SimpleLoadBal-COL-15-ReachabilityDeadlock-0 is trivially true : it is verified in initial state.
Jun 05, 2017 1:09:55 PM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 383 ms
Jun 05, 2017 1:09:55 PM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/ReachabilityDeadlock.pnml.gal : 58 ms
Jun 05, 2017 1:09:56 PM fr.lip6.move.gal.gal2smt.bmc.KInductionSolver computeAndDeclareInvariants
INFO: Computed 39 place invariants in 211 ms
Jun 05, 2017 1:11:39 PM fr.lip6.move.gal.gal2smt.bmc.KInductionSolver init
INFO: Proved 149 variables to be positive in 103500 ms
Jun 05, 2017 1:11:39 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeAblingMatrix
INFO: Computing symmetric may disable matrix : 1280 transitions.
Jun 05, 2017 1:11:39 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Completed :0/1280 took 187 ms. Total solver calls (SAT/UNSAT): 527(1/526)
Jun 05, 2017 1:11:40 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Completed :6/1280 took 1240 ms. Total solver calls (SAT/UNSAT): 3779(23/3756)
Jun 05, 2017 1:11:42 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Completed :12/1280 took 2336 ms. Total solver calls (SAT/UNSAT): 7031(212/6819)
Jun 05, 2017 1:11:43 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Completed :18/1280 took 3375 ms. Total solver calls (SAT/UNSAT): 10373(269/10104)
Jun 05, 2017 1:11:44 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Completed :25/1280 took 4533 ms. Total solver calls (SAT/UNSAT): 14377(409/13968)
Jun 05, 2017 1:11:45 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Completed :31/1280 took 5602 ms. Total solver calls (SAT/UNSAT): 17841(530/17311)
Jun 05, 2017 1:11:46 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Completed :37/1280 took 6708 ms. Total solver calls (SAT/UNSAT): 21369(530/20839)
Jun 05, 2017 1:11:47 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Completed :43/1280 took 7805 ms. Total solver calls (SAT/UNSAT): 24897(530/24367)
Jun 05, 2017 1:11:48 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Completed :49/1280 took 8878 ms. Total solver calls (SAT/UNSAT): 28570(530/28040)
Jun 05, 2017 1:11:49 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Completed :55/1280 took 9931 ms. Total solver calls (SAT/UNSAT): 32272(530/31742)
Jun 05, 2017 1:11:50 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Completed :61/1280 took 10970 ms. Total solver calls (SAT/UNSAT): 35974(530/35444)
Jun 05, 2017 1:11:51 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Completed :67/1280 took 11989 ms. Total solver calls (SAT/UNSAT): 39676(530/39146)
Jun 05, 2017 1:11:52 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Completed :73/1280 took 13005 ms. Total solver calls (SAT/UNSAT): 43378(530/42848)
Jun 05, 2017 1:11:53 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Completed :79/1280 took 14008 ms. Total solver calls (SAT/UNSAT): 47080(530/46550)
Jun 05, 2017 1:11:54 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Completed :85/1280 took 15010 ms. Total solver calls (SAT/UNSAT): 50782(530/50252)
Jun 05, 2017 1:11:55 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Completed :92/1280 took 16168 ms. Total solver calls (SAT/UNSAT): 55101(530/54571)
Jun 05, 2017 1:11:57 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Completed :99/1280 took 17320 ms. Total solver calls (SAT/UNSAT): 59420(530/58890)
Jun 05, 2017 1:11:58 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Completed :106/1280 took 18483 ms. Total solver calls (SAT/UNSAT): 63739(530/63209)
Jun 05, 2017 1:11:59 PM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Completed :113/1280 took 19600 ms. Total solver calls (SAT/UNSAT): 68058(530/67528)

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_SimpleLoadBal-PT-15"
export BK_EXAMINATION="ReachabilityDeadlock"
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_SimpleLoadBal-PT-15.tgz
mv S_SimpleLoadBal-PT-15 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_SimpleLoadBal-PT-15, 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 r150-csrt-149443435000386"
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 '' ReachabilityDeadlock.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 ;