Execution Chart

We display below the execution chart for this examination (boot time has been removed).

Trace from the execution

Formatting '/data/fkordon/mcc2023-input.r344-tall-167889215800031.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2023-input.qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
.................
=====================================================================
Generated by BenchKit 2-5348
Executing tool marciexred
Input is RERS17pb113-PT-7, examination is ReachabilityDeadlock
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r344-tall-167889215800031
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 15M
-rw-r--r-- 1 mcc users 5.6K Feb 26 18:20 CTLCardinality.txt
-rw-r--r-- 1 mcc users 58K Feb 26 18:20 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.5K Feb 26 18:18 CTLFireability.txt
-rw-r--r-- 1 mcc users 45K Feb 26 18:18 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:41 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 3.7K Feb 25 16:38 LTLCardinality.txt
-rw-r--r-- 1 mcc users 26K Feb 25 16:38 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.9K Feb 25 16:38 LTLFireability.txt
-rw-r--r-- 1 mcc users 19K Feb 25 16:38 LTLFireability.xml
-rw-r--r-- 1 mcc users 13K Feb 26 18:26 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 133K Feb 26 18:26 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 9.9K Feb 26 18:23 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 61K Feb 26 18:23 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Feb 25 16:38 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K Feb 25 16:38 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 5 18:23 equiv_col
-rw-r--r-- 1 mcc users 2 Mar 5 18:23 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:23 iscolored
-rw-r--r-- 1 mcc users 15M Mar 5 18:23 model.pnml

--------------------
content from stdout:

=== Data for post analysis generated by BenchKit (invocation template)

The expected result is a vector of booleans
BOOL_VECTOR

FORMULA_NAME ReachabilityDeadlock

=== Now, execution of the tool begins

BK_START 1679122712610

bash -c /home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n "BK_STOP " ; date -u +%s%3N
Invoking MCC driver with
BK_TOOL=marciexred
BK_EXAMINATION=ReachabilityDeadlock
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=1800
BK_INPUT=RERS17pb113-PT-7
Applying reductions before tool marcie
Invoking reducer
Running Version 202303021504
[2023-03-18 06:58:34] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityDeadlock, -timeout, 180, -rebuildPNML]
[2023-03-18 06:58:34] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-18 06:58:34] [INFO ] Load time of PNML (sax parser for PT used): 569 ms
[2023-03-18 06:58:34] [INFO ] Transformed 639 places.
[2023-03-18 06:58:34] [INFO ] Transformed 31353 transitions.
[2023-03-18 06:58:35] [INFO ] Parsed PT model containing 639 places and 31353 transitions and 125418 arcs in 761 ms.
Parsed 1 properties from file /home/mcc/execution/ReachabilityDeadlock.xml in 2 ms.
Working with output stream class java.io.PrintStream
Built sparse matrix representations for Structural reductions in 28 ms.48309KB memory used
Starting structural reductions in DEADLOCK mode, iteration 0 : 639/639 places, 31353/31353 transitions.
Computed a total of 13 stabilizing places and 1 stable transitions
Ensure Unique test removed 12 places
Computed a total of 1 stabilizing places and 1 stable transitions
Iterating post reduction 0 with 12 rules applied. Total rules applied 12 place count 627 transition count 31353
Computed a total of 1 stabilizing places and 1 stable transitions
Computed a total of 1 stabilizing places and 1 stable transitions
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 1 with 1 rules applied. Total rules applied 13 place count 626 transition count 31352
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Applied a total of 13 rules in 921 ms. Remains 626 /639 variables (removed 13) and now considering 31352/31353 (removed 1) transitions.
Finished structural reductions in DEADLOCK mode , in 1 iterations and 927 ms. Remains : 626/639 places, 31352/31353 transitions.
Interrupted Random walk after 1056260 steps, including 0 resets, run timeout after 30001 ms. (steps per millisecond=35 )
[2023-03-18 06:59:06] [INFO ] Flow matrix only has 18325 transitions (discarded 13027 similar events)
// Phase 1: matrix 18325 rows 626 cols
[2023-03-18 06:59:06] [INFO ] Computed 13 place invariants in 93 ms
[2023-03-18 06:59:10] [INFO ] [Real]Absence check using 13 positive place invariants in 33 ms returned sat
[2023-03-18 06:59:10] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-18 06:59:24] [INFO ] [Real]Absence check using state equation in 14428 ms returned sat
[2023-03-18 06:59:25] [INFO ] Solution in real domain found non-integer solution.
[2023-03-18 06:59:28] [INFO ] [Nat]Absence check using 13 positive place invariants in 19 ms returned sat
[2023-03-18 06:59:28] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-18 06:59:41] [INFO ] [Nat]Absence check using state equation in 12898 ms returned sat
[2023-03-18 06:59:41] [INFO ] State equation strengthened by 268 read => feed constraints.
[2023-03-18 06:59:44] [INFO ] SMT solver returned unknown. Retrying;
[2023-03-18 06:59:45] [INFO ] [Nat]Added 268 Read/Feed constraints in 4346 ms returned sat
[2023-03-18 06:59:47] [INFO ] Deduced a trap composed of 40 places in 1071 ms of which 5 ms to minimize.
[2023-03-18 06:59:49] [INFO ] Deduced a trap composed of 64 places in 1575 ms of which 1 ms to minimize.
[2023-03-18 06:59:50] [INFO ] Deduced a trap composed of 48 places in 882 ms of which 2 ms to minimize.
[2023-03-18 06:59:52] [INFO ] Deduced a trap composed of 24 places in 793 ms of which 5 ms to minimize.
[2023-03-18 06:59:53] [INFO ] Deduced a trap composed of 48 places in 1122 ms of which 1 ms to minimize.
[2023-03-18 06:59:54] [INFO ] Deduced a trap composed of 40 places in 835 ms of which 0 ms to minimize.
[2023-03-18 06:59:55] [INFO ] Deduced a trap composed of 40 places in 816 ms of which 0 ms to minimize.
[2023-03-18 06:59:57] [INFO ] Deduced a trap composed of 40 places in 1007 ms of which 0 ms to minimize.
[2023-03-18 06:59:58] [INFO ] Deduced a trap composed of 64 places in 952 ms of which 0 ms to minimize.
[2023-03-18 06:59:59] [INFO ] Deduced a trap composed of 48 places in 845 ms of which 0 ms to minimize.
[2023-03-18 07:00:01] [INFO ] Deduced a trap composed of 40 places in 1649 ms of which 0 ms to minimize.
[2023-03-18 07:00:03] [INFO ] Deduced a trap composed of 48 places in 954 ms of which 1 ms to minimize.
[2023-03-18 07:00:04] [INFO ] Deduced a trap composed of 48 places in 912 ms of which 0 ms to minimize.
[2023-03-18 07:00:05] [INFO ] Deduced a trap composed of 64 places in 946 ms of which 1 ms to minimize.
[2023-03-18 07:00:07] [INFO ] Deduced a trap composed of 64 places in 818 ms of which 3 ms to minimize.
[2023-03-18 07:00:08] [INFO ] Deduced a trap composed of 65 places in 921 ms of which 1 ms to minimize.
[2023-03-18 07:00:10] [INFO ] Deduced a trap composed of 64 places in 1042 ms of which 1 ms to minimize.
[2023-03-18 07:00:11] [INFO ] Deduced a trap composed of 64 places in 865 ms of which 1 ms to minimize.
[2023-03-18 07:00:12] [INFO ] Deduced a trap composed of 64 places in 557 ms of which 0 ms to minimize.
[2023-03-18 07:00:13] [INFO ] Deduced a trap composed of 64 places in 571 ms of which 0 ms to minimize.
[2023-03-18 07:00:14] [INFO ] Trap strengthening (SAT) tested/added 21/20 trap constraints in 28736 ms
[2023-03-18 07:00:17] [INFO ] Computed and/alt/rep : 1/9/1 causal constraints (skipped 18323 transitions) in 2795 ms.
[2023-03-18 07:00:18] [INFO ] Added : 0 causal constraints over 0 iterations in 3928 ms. Result :sat
Interrupted Parikh directed walk after 1017585 steps, including 1000 resets, run timeout after 30001 ms. (steps per millisecond=33 )
Parikh directed walk for 1017585 steps, including 1000 resets, run took 30001 ms. (steps per millisecond=33 )
Random directed walk for 500022 steps, including 0 resets, run took 20115 ms (no deadlock found). (steps per millisecond=24 )
Random walk for 500000 steps, including 0 resets, run took 12877 ms (no deadlock found). (steps per millisecond=38 )
Random directed walk for 500010 steps, including 0 resets, run took 20063 ms (no deadlock found). (steps per millisecond=24 )
Random walk for 500000 steps, including 0 resets, run took 13369 ms (no deadlock found). (steps per millisecond=37 )
Starting structural reductions in DEADLOCK mode, iteration 0 : 626/626 places, 31352/31352 transitions.
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Applied a total of 0 rules in 223 ms. Remains 626 /626 variables (removed 0) and now considering 31352/31352 (removed 0) transitions.
[2023-03-18 07:01:55] [INFO ] Flow matrix only has 18325 transitions (discarded 13027 similar events)
[2023-03-18 07:01:55] [INFO ] Invariant cache hit.
[2023-03-18 07:01:57] [INFO ] Implicit Places using invariants in 1930 ms returned []
Implicit Place search using SMT only with invariants took 1931 ms to find 0 implicit places.
[2023-03-18 07:01:57] [INFO ] Flow matrix only has 18325 transitions (discarded 13027 similar events)
[2023-03-18 07:01:57] [INFO ] Invariant cache hit.
[2023-03-18 07:02:05] [INFO ] Dead Transitions using invariants and state equation in 8436 ms found 0 transitions.
Finished structural reductions in DEADLOCK mode , in 1 iterations and 10592 ms. Remains : 626/626 places, 31352/31352 transitions.
Interrupted Random walk after 1113749 steps, including 0 resets, run timeout after 30001 ms. (steps per millisecond=37 )
[2023-03-18 07:02:35] [INFO ] Flow matrix only has 18325 transitions (discarded 13027 similar events)
[2023-03-18 07:02:35] [INFO ] Invariant cache hit.
[2023-03-18 07:02:39] [INFO ] [Real]Absence check using 13 positive place invariants in 16 ms returned sat
[2023-03-18 07:02:39] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-18 07:02:53] [INFO ] [Real]Absence check using state equation in 13928 ms returned sat
[2023-03-18 07:02:53] [INFO ] Solution in real domain found non-integer solution.
[2023-03-18 07:02:56] [INFO ] [Nat]Absence check using 13 positive place invariants in 19 ms returned sat
[2023-03-18 07:02:56] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-18 07:03:13] [INFO ] [Nat]Absence check using state equation in 17006 ms returned sat
[2023-03-18 07:03:13] [INFO ] State equation strengthened by 268 read => feed constraints.
[2023-03-18 07:03:16] [INFO ] [Nat]Added 268 Read/Feed constraints in 2735 ms returned sat
[2023-03-18 07:03:18] [INFO ] Deduced a trap composed of 48 places in 1079 ms of which 1 ms to minimize.
[2023-03-18 07:03:19] [INFO ] Deduced a trap composed of 40 places in 938 ms of which 1 ms to minimize.
[2023-03-18 07:03:20] [INFO ] Deduced a trap composed of 64 places in 920 ms of which 0 ms to minimize.
[2023-03-18 07:03:21] [INFO ] Deduced a trap composed of 65 places in 868 ms of which 1 ms to minimize.
[2023-03-18 07:03:23] [INFO ] Deduced a trap composed of 64 places in 1054 ms of which 0 ms to minimize.
[2023-03-18 07:03:24] [INFO ] Deduced a trap composed of 48 places in 836 ms of which 0 ms to minimize.
[2023-03-18 07:03:25] [INFO ] Deduced a trap composed of 24 places in 718 ms of which 0 ms to minimize.
[2023-03-18 07:03:26] [INFO ] Deduced a trap composed of 64 places in 677 ms of which 1 ms to minimize.
[2023-03-18 07:03:26] [INFO ] Deduced a trap composed of 40 places in 431 ms of which 1 ms to minimize.
[2023-03-18 07:03:27] [INFO ] Deduced a trap composed of 48 places in 494 ms of which 1 ms to minimize.
[2023-03-18 07:03:28] [INFO ] Deduced a trap composed of 48 places in 523 ms of which 0 ms to minimize.
[2023-03-18 07:03:30] [INFO ] Deduced a trap composed of 64 places in 1001 ms of which 0 ms to minimize.
[2023-03-18 07:03:32] [INFO ] Deduced a trap composed of 40 places in 999 ms of which 0 ms to minimize.
[2023-03-18 07:03:33] [INFO ] Deduced a trap composed of 40 places in 1049 ms of which 1 ms to minimize.
[2023-03-18 07:03:34] [INFO ] Deduced a trap composed of 48 places in 1089 ms of which 1 ms to minimize.
[2023-03-18 07:03:36] [INFO ] Deduced a trap composed of 40 places in 687 ms of which 0 ms to minimize.
[2023-03-18 07:03:36] [INFO ] Deduced a trap composed of 48 places in 576 ms of which 1 ms to minimize.
[2023-03-18 07:03:37] [INFO ] Deduced a trap composed of 40 places in 649 ms of which 6 ms to minimize.
[2023-03-18 07:03:38] [INFO ] Deduced a trap composed of 64 places in 544 ms of which 0 ms to minimize.
[2023-03-18 07:03:40] [INFO ] Deduced a trap composed of 64 places in 985 ms of which 0 ms to minimize.
[2023-03-18 07:03:41] [INFO ] Deduced a trap composed of 64 places in 572 ms of which 0 ms to minimize.
[2023-03-18 07:03:43] [INFO ] Deduced a trap composed of 64 places in 540 ms of which 0 ms to minimize.
[2023-03-18 07:03:44] [INFO ] Trap strengthening (SAT) tested/added 23/22 trap constraints in 27357 ms
[2023-03-18 07:03:46] [INFO ] Computed and/alt/rep : 1/9/1 causal constraints (skipped 18323 transitions) in 1998 ms.
[2023-03-18 07:03:47] [INFO ] Added : 0 causal constraints over 0 iterations in 3122 ms. Result :sat
Interrupted Parikh directed walk after 36356 steps, including 36356 resets, run timeout after 30001 ms. (steps per millisecond=1 )
Parikh directed walk for 36356 steps, including 36356 resets, run took 30001 ms. (steps per millisecond=1 )
Random directed walk for 500020 steps, including 0 resets, run took 19952 ms (no deadlock found). (steps per millisecond=25 )
Random walk for 500000 steps, including 0 resets, run took 13053 ms (no deadlock found). (steps per millisecond=38 )
Random directed walk for 500011 steps, including 0 resets, run took 19925 ms (no deadlock found). (steps per millisecond=25 )
Random walk for 500000 steps, including 0 resets, run took 13752 ms (no deadlock found). (steps per millisecond=36 )
[2023-03-18 07:05:26] [INFO ] Flatten gal took : 1004 ms
[2023-03-18 07:05:26] [INFO ] Export to MCC of 1 properties in file /home/mcc/execution/ReachabilityDeadlock.sr.xml took 0 ms.
[2023-03-18 07:05:26] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml of net with 639 places, 31353 transitions and 125418 arcs took 90 ms.
Total runtime 412311 ms.
There are residual formulas that ITS could not solve within timeout
timeout --kill-after=10s --signal=SIGINT 1m for testing only

Marcie built on Linux at 2019-11-18.
A model checker for Generalized Stochastic Petri nets

authors: Alex Tovchigrechko (IDD package and CTL model checking)

Martin Schwarick (Symbolic numerical analysis and CSL model checking)

Christian Rohr (Simulative and approximative numerical model checking)

marcie@informatik.tu-cottbus.de

called as: /home/mcc/BenchKit/bin//../reducer/bin//../../marcie/bin/marcie --net-file=model.pnml --mcc-file=/home/mcc/BenchKit/bin//../reducer/bin//../../marcie/bin//ReachabilityDeadlock.xml --memory=6 --mcc-mode

parse successfull
net created successfully

Net: RERS17pb113_PT_7
(NrP: 639 NrTr: 31353 NrArc: 125418)

parse formulas
formulas created successfully
place and transition orderings generation:0m 3.888sec

net check time: 0m 0.027sec

init dd package: 0m 2.655sec

TIME LIMIT: Killed by timeout after 1800 seconds
MemTotal: 16393216 kB
MemFree: 10550644 kB
After kill :
MemTotal: 16393216 kB
MemFree: 16120420 kB

BK_TIME_CONFINEMENT_REACHED

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

+ 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//
++ ls /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202303021504.jar
++ perl -pe 's/.*\.//g'
+ VERSION=202303021504
+ echo 'Running Version 202303021504'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination ReachabilityDeadlock -timeout 180 -rebuildPNML
check for maximal unmarked siphon
ok
check for constant places
ok
check if there are places and transitions
ok
check if there are transitions without pre-places
ok
check if at least one transition is enabled in m0
ok
check if there are transitions that can never fire
ok


initing FirstDep: 0m 6.183sec

2184 2553 3666 3662 5349 6376 8521 10162 7745 8510 9605 8510 9972 13694 12716 13002 15261 14936 16044 17591 18300 17099 17648 17339 16806 16850 14573 12880 14285 16723 15445 16890 16325 17695 19156 19699 18079 18173 18341 17464 17169 17459 17463 18971 15736 14971 13229 14312 15107 18638 17732 20120 21315 23262 23696 22516 20609 19842 21227 21349 21819 24827 23944 23944 24916 23693 22609 22384 24408 23939 26161 25492 24857 20414 21046 21415 22591 23610 25229 25391 24033 24084 22788 21733 20400 21151

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="RERS17pb113-PT-7"
export BK_EXAMINATION="ReachabilityDeadlock"
export BK_TOOL="marciexred"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="1800"
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 2-5348"
echo " Executing tool marciexred"
echo " Input is RERS17pb113-PT-7, 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 r344-tall-167889215800031"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/RERS17pb113-PT-7.tgz
mv RERS17pb113-PT-7 execution
cd execution
if [ "ReachabilityDeadlock" = "ReachabilityDeadlock" ] || [ "ReachabilityDeadlock" = "UpperBounds" ] || [ "ReachabilityDeadlock" = "QuasiLiveness" ] || [ "ReachabilityDeadlock" = "StableMarking" ] || [ "ReachabilityDeadlock" = "Liveness" ] || [ "ReachabilityDeadlock" = "OneSafe" ] || [ "ReachabilityDeadlock" = "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 [ "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
elif [ "ReachabilityDeadlock" = "ReachabilityDeadlock" ] || [ "ReachabilityDeadlock" = "QuasiLiveness" ] || [ "ReachabilityDeadlock" = "StableMarking" ] || [ "ReachabilityDeadlock" = "Liveness" ] || [ "ReachabilityDeadlock" = "OneSafe" ] ; then
echo "FORMULA_NAME ReachabilityDeadlock"
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 ;