Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2024-input.r522-tall-171662353700282.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2024-input.qcow2 backing_fmt=qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
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=====================================================================
Generated by BenchKit 2-5568
Executing tool ltsminxred
Input is Raft-PT-08, examination is QuasiLiveness
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r522-tall-171662353700282
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 592K
-rw-r--r-- 1 mcc users 6.6K May 14 13:22 CTLCardinality.txt
-rw-r--r-- 1 mcc users 71K May 14 13:22 CTLCardinality.xml
-rw-r--r-- 1 mcc users 4.6K May 14 13:22 CTLFireability.txt
-rw-r--r-- 1 mcc users 43K May 14 13:22 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 18 16:43 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 3.3K Apr 23 07:46 LTLCardinality.txt
-rw-r--r-- 1 mcc users 25K Apr 23 07:46 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.0K Apr 23 07:46 LTLFireability.txt
-rw-r--r-- 1 mcc users 16K Apr 23 07:46 LTLFireability.xml
-rw-r--r-- 1 mcc users 9.6K Apr 11 18:05 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 101K Apr 11 18:05 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 11K Apr 11 17:58 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 95K Apr 11 17:58 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.5K Apr 23 07:46 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.5K Apr 23 07:46 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 18 16:43 equiv_col
-rw-r--r-- 1 mcc users 3 May 18 16:43 instance
-rw-r--r-- 1 mcc users 6 May 18 16:43 iscolored
-rw-r--r-- 1 mcc users 156K May 18 16:43 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 QuasiLiveness

=== Now, execution of the tool begins

BK_START 1717223725201

Invoking MCC driver with
BK_TOOL=ltsminxred
BK_EXAMINATION=QuasiLiveness
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=1800
BK_INPUT=Raft-PT-08
BK_MEMORY_CONFINEMENT=16384
Applying reductions before tool ltsmin
Invoking reducer
Running Version 202405141337
[2024-06-01 06:35:26] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, QuasiLiveness, -timeout, 180, -rebuildPNML]
[2024-06-01 06:35:26] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2024-06-01 06:35:26] [INFO ] Load time of PNML (sax parser for PT used): 101 ms
[2024-06-01 06:35:26] [INFO ] Transformed 328 places.
[2024-06-01 06:35:26] [INFO ] Transformed 568 transitions.
[2024-06-01 06:35:26] [INFO ] Found NUPN structural information;
[2024-06-01 06:35:26] [INFO ] Parsed PT model containing 328 places and 568 transitions and 2163 arcs in 213 ms.
Starting structural reductions in LIVENESS mode, iteration 0 : 328/328 places, 568/568 transitions.
Ensure Unique test removed 34 transitions
Reduce isomorphic transitions removed 34 transitions.
Iterating post reduction 0 with 34 rules applied. Total rules applied 34 place count 328 transition count 534
Performed 8 Post agglomeration using F-continuation condition.Transition count delta: 8
Deduced a syphon composed of 8 places in 1 ms
Reduce places removed 8 places and 0 transitions.
Iterating global reduction 1 with 16 rules applied. Total rules applied 50 place count 320 transition count 526
Performed 8 Post agglomeration using F-continuation condition.Transition count delta: -40
Deduced a syphon composed of 8 places in 0 ms
Reduce places removed 8 places and 0 transitions.
Iterating global reduction 1 with 16 rules applied. Total rules applied 66 place count 312 transition count 566
Applied a total of 66 rules in 73 ms. Remains 312 /328 variables (removed 16) and now considering 566/568 (removed 2) transitions.
[2024-06-01 06:35:26] [INFO ] Flow matrix only has 530 transitions (discarded 36 similar events)
// Phase 1: matrix 530 rows 312 cols
[2024-06-01 06:35:26] [INFO ] Computed 64 invariants in 28 ms
[2024-06-01 06:35:27] [INFO ] Implicit Places using invariants in 458 ms returned []
[2024-06-01 06:35:27] [INFO ] Flow matrix only has 530 transitions (discarded 36 similar events)
[2024-06-01 06:35:27] [INFO ] Invariant cache hit.
[2024-06-01 06:35:27] [INFO ] State equation strengthened by 396 read => feed constraints.
[2024-06-01 06:35:28] [INFO ] Implicit Places using invariants and state equation in 809 ms returned []
Implicit Place search using SMT with State Equation took 1299 ms to find 0 implicit places.
Running 565 sub problems to find dead transitions.
[2024-06-01 06:35:28] [INFO ] Flow matrix only has 530 transitions (discarded 36 similar events)
[2024-06-01 06:35:28] [INFO ] Invariant cache hit.
[2024-06-01 06:35:28] [INFO ] State equation strengthened by 396 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/311 variables, 311/311 constraints. Problems are: Problem set: 0 solved, 565 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/311 variables, 0/311 constraints. Problems are: Problem set: 0 solved, 565 unsolved
At refinement iteration 2 (OVERLAPS) 1/312 variables, 64/375 constraints. Problems are: Problem set: 0 solved, 565 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/312 variables, 1/376 constraints. Problems are: Problem set: 0 solved, 565 unsolved
[2024-06-01 06:35:38] [INFO ] Deduced a trap composed of 65 places in 131 ms of which 24 ms to minimize.
At refinement iteration 4 (INCLUDED_ONLY) 0/312 variables, 1/377 constraints. Problems are: Problem set: 0 solved, 565 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/312 variables, 0/377 constraints. Problems are: Problem set: 0 solved, 565 unsolved
At refinement iteration 6 (OVERLAPS) 529/841 variables, 312/689 constraints. Problems are: Problem set: 0 solved, 565 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/841 variables, 395/1084 constraints. Problems are: Problem set: 0 solved, 565 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 841/842 variables, and 1084 constraints, problems are : Problem set: 0 solved, 565 unsolved in 30025 ms.
Refiners :[Domain max(s): 312/312 constraints, Positive P Invariants (semi-flows): 64/64 constraints, State Equation: 312/312 constraints, ReadFeed: 395/396 constraints, PredecessorRefiner: 565/565 constraints, Known Traps: 1/1 constraints]
Escalating to Integer solving :Problem set: 0 solved, 565 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/311 variables, 311/311 constraints. Problems are: Problem set: 0 solved, 565 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/311 variables, 0/311 constraints. Problems are: Problem set: 0 solved, 565 unsolved
At refinement iteration 2 (OVERLAPS) 1/312 variables, 64/375 constraints. Problems are: Problem set: 0 solved, 565 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/312 variables, 1/376 constraints. Problems are: Problem set: 0 solved, 565 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/312 variables, 1/377 constraints. Problems are: Problem set: 0 solved, 565 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/312 variables, 0/377 constraints. Problems are: Problem set: 0 solved, 565 unsolved
At refinement iteration 6 (OVERLAPS) 529/841 variables, 312/689 constraints. Problems are: Problem set: 0 solved, 565 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/841 variables, 395/1084 constraints. Problems are: Problem set: 0 solved, 565 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/841 variables, 565/1649 constraints. Problems are: Problem set: 0 solved, 565 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/841 variables, 0/1649 constraints. Problems are: Problem set: 0 solved, 565 unsolved
At refinement iteration 10 (OVERLAPS) 1/842 variables, 1/1650 constraints. Problems are: Problem set: 0 solved, 565 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 842/842 variables, and 1650 constraints, problems are : Problem set: 0 solved, 565 unsolved in 30017 ms.
Refiners :[Domain max(s): 312/312 constraints, Positive P Invariants (semi-flows): 64/64 constraints, State Equation: 312/312 constraints, ReadFeed: 396/396 constraints, PredecessorRefiner: 565/565 constraints, Known Traps: 1/1 constraints]
After SMT, in 60448ms problems are : Problem set: 0 solved, 565 unsolved
Search for dead transitions found 0 dead transitions in 60563ms
Starting structural reductions in LIVENESS mode, iteration 1 : 312/328 places, 566/568 transitions.
Finished structural reductions in LIVENESS mode , in 1 iterations and 61980 ms. Remains : 312/328 places, 566/568 transitions.
Discarding 250 transitions out of 566. Remains 316
Initial state reduction rules removed 1 formulas.
RANDOM walk for 40000 steps (8 resets) in 2598 ms. (15 steps per ms) remains 4/315 properties
BEST_FIRST walk for 40004 steps (8 resets) in 88 ms. (449 steps per ms) remains 4/4 properties
BEST_FIRST walk for 40004 steps (8 resets) in 136 ms. (292 steps per ms) remains 4/4 properties
BEST_FIRST walk for 40004 steps (8 resets) in 127 ms. (312 steps per ms) remains 4/4 properties
BEST_FIRST walk for 40004 steps (8 resets) in 133 ms. (298 steps per ms) remains 4/4 properties
[2024-06-01 06:36:29] [INFO ] Flow matrix only has 530 transitions (discarded 36 similar events)
[2024-06-01 06:36:29] [INFO ] Invariant cache hit.
[2024-06-01 06:36:29] [INFO ] State equation strengthened by 396 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/5 variables, 5/5 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/5 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 2 (OVERLAPS) 9/14 variables, 4/9 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/14 variables, 9/18 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/14 variables, 0/18 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 5 (OVERLAPS) 292/306 variables, 60/78 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/306 variables, 292/370 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/306 variables, 0/370 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 8 (OVERLAPS) 523/829 variables, 306/676 constraints. Problems are: Problem set: 0 solved, 4 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (INCLUDED_ONLY) 0/829 variables, 393/1069 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/829 variables, 0/1069 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 11 (OVERLAPS) 10/839 variables, 5/1074 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/839 variables, 5/1079 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/839 variables, 2/1081 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/839 variables, 0/1081 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 15 (OVERLAPS) 2/841 variables, 1/1082 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/841 variables, 1/1083 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/841 variables, 0/1083 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 18 (OVERLAPS) 1/842 variables, 1/1084 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/842 variables, 0/1084 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 20 (OVERLAPS) 0/842 variables, 0/1084 constraints. Problems are: Problem set: 0 solved, 4 unsolved
No progress, stopping.
After SMT solving in domain Real declared 842/842 variables, and 1084 constraints, problems are : Problem set: 0 solved, 4 unsolved in 576 ms.
Refiners :[Domain max(s): 312/312 constraints, Positive P Invariants (semi-flows): 64/64 constraints, State Equation: 312/312 constraints, ReadFeed: 396/396 constraints, PredecessorRefiner: 4/4 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 4 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/5 variables, 5/5 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/5 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 2 (OVERLAPS) 9/14 variables, 4/9 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/14 variables, 9/18 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/14 variables, 0/18 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 5 (OVERLAPS) 292/306 variables, 60/78 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/306 variables, 292/370 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/306 variables, 0/370 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 8 (OVERLAPS) 523/829 variables, 306/676 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/829 variables, 393/1069 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/829 variables, 0/1069 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 11 (OVERLAPS) 10/839 variables, 5/1074 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/839 variables, 5/1079 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/839 variables, 2/1081 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/839 variables, 4/1085 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/839 variables, 0/1085 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 16 (OVERLAPS) 2/841 variables, 1/1086 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/841 variables, 1/1087 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/841 variables, 0/1087 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 19 (OVERLAPS) 1/842 variables, 1/1088 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/842 variables, 0/1088 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 21 (OVERLAPS) 0/842 variables, 0/1088 constraints. Problems are: Problem set: 0 solved, 4 unsolved
No progress, stopping.
After SMT solving in domain Int declared 842/842 variables, and 1088 constraints, problems are : Problem set: 0 solved, 4 unsolved in 970 ms.
Refiners :[Domain max(s): 312/312 constraints, Positive P Invariants (semi-flows): 64/64 constraints, State Equation: 312/312 constraints, ReadFeed: 396/396 constraints, PredecessorRefiner: 4/4 constraints, Known Traps: 0/0 constraints]
After SMT, in 1579ms problems are : Problem set: 0 solved, 4 unsolved
Fused 4 Parikh solutions to 2 different solutions.
Finished Parikh walk after 61 steps, including 0 resets, run visited all 4 properties in 3 ms. (steps per millisecond=20 )
Finished Parikh walk after 0 steps, including 0 resets, run visited all 0 properties in 1 ms. (steps per millisecond=0 )
Parikh walk visited 4 properties in 9 ms.
Able to resolve query QuasiLiveness after proving 316 properties.
FORMULA QuasiLiveness TRUE TECHNIQUES RANDOM_WALK PARIKH_WALK TOPOLOGICAL INITIAL_STATE
Total runtime 64818 ms.
ITS solved all properties within timeout

BK_STOP 1717223791334

--------------------
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_1.0.0.202405141337.jar
+ VERSION=202405141337
+ echo 'Running Version 202405141337'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination QuasiLiveness -timeout 180 -rebuildPNML

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="Raft-PT-08"
export BK_EXAMINATION="QuasiLiveness"
export BK_TOOL="ltsminxred"
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 2-5568"
echo " Executing tool ltsminxred"
echo " Input is Raft-PT-08, examination is QuasiLiveness"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r522-tall-171662353700282"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/Raft-PT-08.tgz
mv Raft-PT-08 execution
cd execution
if [ "QuasiLiveness" = "ReachabilityDeadlock" ] || [ "QuasiLiveness" = "UpperBounds" ] || [ "QuasiLiveness" = "QuasiLiveness" ] || [ "QuasiLiveness" = "StableMarking" ] || [ "QuasiLiveness" = "Liveness" ] || [ "QuasiLiveness" = "OneSafe" ] || [ "QuasiLiveness" = "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 [ "QuasiLiveness" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "QuasiLiveness" != "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 "QuasiLiveness.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property QuasiLiveness.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "QuasiLiveness.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 '' QuasiLiveness.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "QuasiLiveness" = "ReachabilityDeadlock" ] || [ "QuasiLiveness" = "QuasiLiveness" ] || [ "QuasiLiveness" = "StableMarking" ] || [ "QuasiLiveness" = "Liveness" ] || [ "QuasiLiveness" = "OneSafe" ] ; then
echo "FORMULA_NAME QuasiLiveness"
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 ;