Execution Chart

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

Trace from the execution

Formatting '/mnt/tpsp/fkordon/mcc2023-input.r043-tajo-167813696600255.qcow2', fmt=qcow2 size=4294967296 backing_file='/mnt/tpsp/fkordon/mcc2023-input.qcow2' encryption=off cluster_size=65536 lazy_refcounts=off
Waiting for the VM to be ready (probing ssh)
....................................................................................................................................
=====================================================================
Generated by BenchKit 2-5348
Executing tool smartxred
Input is BridgeAndVehicles-PT-V50P50N10, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r043-tajo-167813696600255
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 4.1M
-rw-r--r-- 1 mcc users 22K Feb 25 12:11 CTLCardinality.txt
-rw-r--r-- 1 mcc users 142K Feb 25 12:11 CTLCardinality.xml
-rw-r--r-- 1 mcc users 247K Feb 25 12:09 CTLFireability.txt
-rw-r--r-- 1 mcc users 950K Feb 25 12:09 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:40 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.4K Jan 29 11:40 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 11K Feb 25 15:36 LTLCardinality.txt
-rw-r--r-- 1 mcc users 42K Feb 25 15:36 LTLCardinality.xml
-rw-r--r-- 1 mcc users 111K Feb 25 15:36 LTLFireability.txt
-rw-r--r-- 1 mcc users 335K Feb 25 15:36 LTLFireability.xml
-rw-r--r-- 1 mcc users 40K Feb 25 12:26 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 234K Feb 25 12:26 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 177K Feb 25 12:24 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 714K Feb 25 12:24 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 3.1K Feb 25 15:36 UpperBounds.txt
-rw-r--r-- 1 mcc users 6.5K Feb 25 15:36 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 5 18:22 equiv_col
-rw-r--r-- 1 mcc users 10 Mar 5 18:22 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 iscolored
-rw-r--r-- 1 mcc users 1.1M Mar 5 18:22 model.pnml

--------------------
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 BridgeAndVehicles-PT-V50P50N10-ReachabilityFireability-00
FORMULA_NAME BridgeAndVehicles-PT-V50P50N10-ReachabilityFireability-01
FORMULA_NAME BridgeAndVehicles-PT-V50P50N10-ReachabilityFireability-02
FORMULA_NAME BridgeAndVehicles-PT-V50P50N10-ReachabilityFireability-03
FORMULA_NAME BridgeAndVehicles-PT-V50P50N10-ReachabilityFireability-04
FORMULA_NAME BridgeAndVehicles-PT-V50P50N10-ReachabilityFireability-05
FORMULA_NAME BridgeAndVehicles-PT-V50P50N10-ReachabilityFireability-06
FORMULA_NAME BridgeAndVehicles-PT-V50P50N10-ReachabilityFireability-07
FORMULA_NAME BridgeAndVehicles-PT-V50P50N10-ReachabilityFireability-08
FORMULA_NAME BridgeAndVehicles-PT-V50P50N10-ReachabilityFireability-09
FORMULA_NAME BridgeAndVehicles-PT-V50P50N10-ReachabilityFireability-10
FORMULA_NAME BridgeAndVehicles-PT-V50P50N10-ReachabilityFireability-11
FORMULA_NAME BridgeAndVehicles-PT-V50P50N10-ReachabilityFireability-12
FORMULA_NAME BridgeAndVehicles-PT-V50P50N10-ReachabilityFireability-13
FORMULA_NAME BridgeAndVehicles-PT-V50P50N10-ReachabilityFireability-14
FORMULA_NAME BridgeAndVehicles-PT-V50P50N10-ReachabilityFireability-15

=== Now, execution of the tool begins

BK_START 1678780089000

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=smartxred
BK_EXAMINATION=ReachabilityFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=BridgeAndVehicles-PT-V50P50N10
Applying reductions before tool smart
Invoking reducer
Running Version 202303021504
[2023-03-14 07:48:10] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityFireability, -timeout, 360, -rebuildPNML]
[2023-03-14 07:48:10] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-14 07:48:10] [INFO ] Load time of PNML (sax parser for PT used): 105 ms
[2023-03-14 07:48:10] [INFO ] Transformed 128 places.
[2023-03-14 07:48:10] [INFO ] Transformed 1328 transitions.
[2023-03-14 07:48:10] [INFO ] Parsed PT model containing 128 places and 1328 transitions and 10010 arcs in 178 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityFireability.xml in 24 ms.
Working with output stream class java.io.PrintStream
FORMULA BridgeAndVehicles-PT-V50P50N10-ReachabilityFireability-03 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Incomplete random walk after 10000 steps, including 22 resets, run finished after 694 ms. (steps per millisecond=14 ) properties (out of 15) seen :5
FORMULA BridgeAndVehicles-PT-V50P50N10-ReachabilityFireability-07 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA BridgeAndVehicles-PT-V50P50N10-ReachabilityFireability-06 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA BridgeAndVehicles-PT-V50P50N10-ReachabilityFireability-05 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA BridgeAndVehicles-PT-V50P50N10-ReachabilityFireability-02 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA BridgeAndVehicles-PT-V50P50N10-ReachabilityFireability-01 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
Incomplete Best-First random walk after 10000 steps, including 10 resets, run finished after 1463 ms. (steps per millisecond=6 ) properties (out of 10) seen :0
Incomplete Best-First random walk after 10001 steps, including 10 resets, run finished after 512 ms. (steps per millisecond=19 ) properties (out of 10) seen :0
Incomplete Best-First random walk after 10000 steps, including 8 resets, run finished after 259 ms. (steps per millisecond=38 ) properties (out of 10) seen :1
FORMULA BridgeAndVehicles-PT-V50P50N10-ReachabilityFireability-13 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
Incomplete Best-First random walk after 10000 steps, including 9 resets, run finished after 223 ms. (steps per millisecond=44 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10000 steps, including 8 resets, run finished after 163 ms. (steps per millisecond=61 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 9 resets, run finished after 224 ms. (steps per millisecond=44 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 9 resets, run finished after 243 ms. (steps per millisecond=41 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 9 resets, run finished after 238 ms. (steps per millisecond=42 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10000 steps, including 8 resets, run finished after 230 ms. (steps per millisecond=43 ) properties (out of 9) seen :0
Running SMT prover for 9 properties.
[2023-03-14 07:48:15] [INFO ] Flow matrix only has 250 transitions (discarded 1078 similar events)
// Phase 1: matrix 250 rows 128 cols
[2023-03-14 07:48:15] [INFO ] Computed 7 place invariants in 26 ms
[2023-03-14 07:48:17] [INFO ] [Real]Absence check using 7 positive place invariants in 4 ms returned sat
[2023-03-14 07:48:17] [INFO ] After 278ms SMT Verify possible using all constraints in real domain returned unsat :1 sat :0 real:8
[2023-03-14 07:48:17] [INFO ] [Nat]Absence check using 7 positive place invariants in 1 ms returned sat
[2023-03-14 07:48:17] [INFO ] After 401ms SMT Verify possible using state equation in natural domain returned unsat :3 sat :6
[2023-03-14 07:48:17] [INFO ] State equation strengthened by 22 read => feed constraints.
[2023-03-14 07:48:18] [INFO ] After 483ms SMT Verify possible using 22 Read/Feed constraints in natural domain returned unsat :3 sat :6
[2023-03-14 07:48:18] [INFO ] After 1081ms SMT Verify possible using trap constraints in natural domain returned unsat :3 sat :6
Attempting to minimize the solution found.
Minimization took 448 ms.
[2023-03-14 07:48:19] [INFO ] After 2039ms SMT Verify possible using all constraints in natural domain returned unsat :3 sat :6
FORMULA BridgeAndVehicles-PT-V50P50N10-ReachabilityFireability-14 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA BridgeAndVehicles-PT-V50P50N10-ReachabilityFireability-04 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA BridgeAndVehicles-PT-V50P50N10-ReachabilityFireability-00 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
Fused 9 Parikh solutions to 6 different solutions.
Parikh walk visited 0 properties in 124 ms.
Support contains 67 out of 128 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 128/128 places, 1328/1328 transitions.
Graph (complete) has 1222 edges and 128 vertex of which 126 are kept as prefixes of interest. Removing 2 places using SCC suffix rule.10 ms
Discarding 2 places :
Also discarding 0 output transitions
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 2 place count 125 transition count 1327
Iterating global reduction 0 with 1 rules applied. Total rules applied 3 place count 125 transition count 1327
Applied a total of 3 rules in 402 ms. Remains 125 /128 variables (removed 3) and now considering 1327/1328 (removed 1) transitions.
[2023-03-14 07:48:19] [INFO ] Flow matrix only has 249 transitions (discarded 1078 similar events)
// Phase 1: matrix 249 rows 125 cols
[2023-03-14 07:48:19] [INFO ] Computed 5 place invariants in 12 ms
[2023-03-14 07:48:24] [INFO ] Dead Transitions using invariants and state equation in 4537 ms found 0 transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 4943 ms. Remains : 125/128 places, 1327/1328 transitions.
Incomplete random walk after 10000 steps, including 22 resets, run finished after 266 ms. (steps per millisecond=37 ) properties (out of 6) seen :0
Incomplete Best-First random walk after 10001 steps, including 9 resets, run finished after 104 ms. (steps per millisecond=96 ) properties (out of 6) seen :0
Incomplete Best-First random walk after 10001 steps, including 9 resets, run finished after 76 ms. (steps per millisecond=131 ) properties (out of 6) seen :0
Incomplete Best-First random walk after 10000 steps, including 8 resets, run finished after 80 ms. (steps per millisecond=125 ) properties (out of 6) seen :0
Incomplete Best-First random walk after 10001 steps, including 9 resets, run finished after 96 ms. (steps per millisecond=104 ) properties (out of 6) seen :0
Incomplete Best-First random walk after 10001 steps, including 9 resets, run finished after 88 ms. (steps per millisecond=113 ) properties (out of 6) seen :0
Incomplete Best-First random walk after 10000 steps, including 8 resets, run finished after 79 ms. (steps per millisecond=126 ) properties (out of 6) seen :0
Interrupted probabilistic random walk after 231738 steps, run timeout after 3001 ms. (steps per millisecond=77 ) properties seen :{}
Probabilistic random walk after 231738 steps, saw 63790 distinct states, run finished after 3002 ms. (steps per millisecond=77 ) properties seen :0
Running SMT prover for 6 properties.
[2023-03-14 07:48:28] [INFO ] Flow matrix only has 249 transitions (discarded 1078 similar events)
[2023-03-14 07:48:28] [INFO ] Invariant cache hit.
[2023-03-14 07:48:28] [INFO ] [Real]Absence check using 5 positive place invariants in 2 ms returned sat
[2023-03-14 07:48:28] [INFO ] After 115ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:6
[2023-03-14 07:48:28] [INFO ] [Nat]Absence check using 5 positive place invariants in 2 ms returned sat
[2023-03-14 07:48:28] [INFO ] After 320ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :6
[2023-03-14 07:48:28] [INFO ] State equation strengthened by 22 read => feed constraints.
[2023-03-14 07:48:29] [INFO ] After 695ms SMT Verify possible using 22 Read/Feed constraints in natural domain returned unsat :0 sat :6
[2023-03-14 07:48:30] [INFO ] After 1796ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :6
Attempting to minimize the solution found.
Minimization took 641 ms.
[2023-03-14 07:48:31] [INFO ] After 2859ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :6
Parikh walk visited 0 properties in 73 ms.
Support contains 67 out of 125 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 125/125 places, 1327/1327 transitions.
Applied a total of 0 rules in 99 ms. Remains 125 /125 variables (removed 0) and now considering 1327/1327 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 99 ms. Remains : 125/125 places, 1327/1327 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 125/125 places, 1327/1327 transitions.
Applied a total of 0 rules in 138 ms. Remains 125 /125 variables (removed 0) and now considering 1327/1327 (removed 0) transitions.
[2023-03-14 07:48:31] [INFO ] Flow matrix only has 249 transitions (discarded 1078 similar events)
[2023-03-14 07:48:31] [INFO ] Invariant cache hit.
[2023-03-14 07:48:31] [INFO ] Implicit Places using invariants in 154 ms returned []
[2023-03-14 07:48:31] [INFO ] Flow matrix only has 249 transitions (discarded 1078 similar events)
[2023-03-14 07:48:31] [INFO ] Invariant cache hit.
[2023-03-14 07:48:31] [INFO ] State equation strengthened by 22 read => feed constraints.
[2023-03-14 07:48:32] [INFO ] Implicit Places using invariants and state equation in 536 ms returned []
Implicit Place search using SMT with State Equation took 700 ms to find 0 implicit places.
[2023-03-14 07:48:32] [INFO ] Redundant transitions in 99 ms returned []
[2023-03-14 07:48:32] [INFO ] Flow matrix only has 249 transitions (discarded 1078 similar events)
[2023-03-14 07:48:32] [INFO ] Invariant cache hit.
[2023-03-14 07:48:33] [INFO ] Dead Transitions using invariants and state equation in 678 ms found 0 transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1632 ms. Remains : 125/125 places, 1327/1327 transitions.
Ensure Unique test removed 1078 transitions
Reduce isomorphic transitions removed 1078 transitions.
Iterating post reduction 0 with 1078 rules applied. Total rules applied 1078 place count 125 transition count 249
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 1 with 2 rules applied. Total rules applied 1080 place count 124 transition count 248
Applied a total of 1080 rules in 19 ms. Remains 124 /125 variables (removed 1) and now considering 248/1327 (removed 1079) transitions.
Running SMT prover for 6 properties.
// Phase 1: matrix 248 rows 124 cols
[2023-03-14 07:48:33] [INFO ] Computed 5 place invariants in 6 ms
[2023-03-14 07:48:33] [INFO ] [Real]Absence check using 5 positive place invariants in 2 ms returned sat
[2023-03-14 07:48:33] [INFO ] After 83ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:6
[2023-03-14 07:48:33] [INFO ] [Nat]Absence check using 5 positive place invariants in 1 ms returned sat
[2023-03-14 07:48:33] [INFO ] After 356ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :6
[2023-03-14 07:48:33] [INFO ] After 641ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :6
Attempting to minimize the solution found.
Minimization took 251 ms.
[2023-03-14 07:48:34] [INFO ] After 986ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :6
[2023-03-14 07:48:34] [INFO ] Export to MCC of 6 properties in file /home/mcc/execution/ReachabilityFireability.sr.xml took 5 ms.
[2023-03-14 07:48:34] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml of net with 125 places, 1327 transitions and 10006 arcs took 18 ms.
[2023-03-14 07:48:34] [INFO ] Flatten gal took : 150 ms
Total runtime 23832 ms.
There are residual formulas that ITS could not solve within timeout
======================================================
========== this is Smart for the MCC'2018 ============
======================================================
Running BridgeAndVehicles (PT), instance V50P50N10
Examination ReachabilityFireability
Parser /home/mcc/BenchKit/bin//../reducer/bin//../../smart/bin//parser/Fireability.jar
Model checker /home/mcc/BenchKit/bin//../reducer/bin//../../smart/bin//rem_exec//smart

GOT IT HERE. BS
Petri model created: 125 places, 1327 transitions, 10006 arcs.
Final Score: 8925.903
Took : 119 seconds
Reachability Fireability file is: ReachabilityFireability.xml
READY TO PARSE. BS

BK_STOP 1678780234492

--------------------
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//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202303021504.jar
+ VERSION=202303021504
+ echo 'Running Version 202303021504'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination ReachabilityFireability -timeout 360 -rebuildPNML
ERROR in file model.sm near line 11471:
syntax error

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="BridgeAndVehicles-PT-V50P50N10"
export BK_EXAMINATION="ReachabilityFireability"
export BK_TOOL="smartxred"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
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 smartxred"
echo " Input is BridgeAndVehicles-PT-V50P50N10, examination is ReachabilityFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r043-tajo-167813696600255"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/BridgeAndVehicles-PT-V50P50N10.tgz
mv BridgeAndVehicles-PT-V50P50N10 execution
cd execution
if [ "ReachabilityFireability" = "ReachabilityDeadlock" ] || [ "ReachabilityFireability" = "UpperBounds" ] || [ "ReachabilityFireability" = "QuasiLiveness" ] || [ "ReachabilityFireability" = "StableMarking" ] || [ "ReachabilityFireability" = "Liveness" ] || [ "ReachabilityFireability" = "OneSafe" ] || [ "ReachabilityFireability" = "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 [ "ReachabilityFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "ReachabilityFireability" != "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 "ReachabilityFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property ReachabilityFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "ReachabilityFireability.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 '' ReachabilityFireability.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "ReachabilityFireability" = "ReachabilityDeadlock" ] || [ "ReachabilityFireability" = "QuasiLiveness" ] || [ "ReachabilityFireability" = "StableMarking" ] || [ "ReachabilityFireability" = "Liveness" ] || [ "ReachabilityFireability" = "OneSafe" ] ; then
echo "FORMULA_NAME ReachabilityFireability"
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 ;