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.r228-tall-171649618100460.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)
.................
=====================================================================
Generated by BenchKit 2-5568
Executing tool tapaal
Input is MAPK-PT-00640, examination is LTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r228-tall-171649618100460
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 524K
-rw-r--r-- 1 mcc users 6.9K May 14 13:22 CTLCardinality.txt
-rw-r--r-- 1 mcc users 70K May 14 13:22 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.0K May 14 13:22 CTLFireability.txt
-rw-r--r-- 1 mcc users 60K May 14 13:22 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 18 16:42 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.2K May 18 16:42 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 4.0K Apr 22 14:52 LTLCardinality.txt
-rw-r--r-- 1 mcc users 26K Apr 22 14:52 LTLCardinality.xml
-rw-r--r-- 1 mcc users 1.8K May 19 07:22 LTLFireability.txt
-rw-r--r-- 1 mcc users 15K May 19 18:36 LTLFireability.xml
-rw-r--r-- 1 mcc users 15K Apr 13 07:53 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 147K Apr 13 07:53 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 9.0K Apr 13 07:52 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 83K Apr 13 07:52 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Apr 22 14:52 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K Apr 22 14:52 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 18 16:42 equiv_col
-rw-r--r-- 1 mcc users 6 May 18 16:42 instance
-rw-r--r-- 1 mcc users 6 May 18 16:42 iscolored
-rw-r--r-- 1 mcc users 25K May 18 16:42 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 MAPK-PT-00640-LTLFireability-00
FORMULA_NAME MAPK-PT-00640-LTLFireability-01
FORMULA_NAME MAPK-PT-00640-LTLFireability-02
FORMULA_NAME MAPK-PT-00640-LTLFireability-03
FORMULA_NAME MAPK-PT-00640-LTLFireability-04
FORMULA_NAME MAPK-PT-00640-LTLFireability-05
FORMULA_NAME MAPK-PT-00640-LTLFireability-06
FORMULA_NAME MAPK-PT-00640-LTLFireability-07
FORMULA_NAME MAPK-PT-00640-LTLFireability-08
FORMULA_NAME MAPK-PT-00640-LTLFireability-09
FORMULA_NAME MAPK-PT-00640-LTLFireability-10
FORMULA_NAME MAPK-PT-00640-LTLFireability-11
FORMULA_NAME MAPK-PT-00640-LTLFireability-12
FORMULA_NAME MAPK-PT-00640-LTLFireability-13
FORMULA_NAME MAPK-PT-00640-LTLFireability-14
FORMULA_NAME MAPK-PT-00640-LTLFireability-15

=== Now, execution of the tool begins

BK_START 1716629146088

tapaal
Got BK_BIN_PATH=/home/mcc/BenchKit/bin/
---> tapaal --- TAPAAL - v2.2024
Setting MODEL_PATH=.
Setting VERIFYPN=/home/mcc/BenchKit/bin/verifypn
Got BK_TIME_CONFINEMENT=3600
Setting TEMPDIR=/home/mcc/BenchKit/bin/tmp
Got BK_MEMORY_CONFINEMENT=16384
Limiting to 16265216 kB
Total timeout: 3590
Time left: 3590

*************************************
* TAPAAL verifying LTLFireability *
*************************************
TEMPDIR=/home/mcc/BenchKit/bin/tmp
QF=/home/mcc/BenchKit/bin/tmp/tmp.fad69d5uHS
MF=/home/mcc/BenchKit/bin/tmp/tmp.umLK9Oe4bw
Time left: 3590
---------------------------------------------------
Step -1: Stripping Colors
---------------------------------------------------
Verifying stripped models (16 in total)

Time left: 3590
---------------------------------------------------
Step 0: Parallel Simplification
---------------------------------------------------
Doing parallel simplification (16 in total)
Total simplification timout is 718 -- reduction timeout is 299
timeout 1017 /home/mcc/BenchKit/bin/verifypn -n -ltl -q 718 -l 29 -d 299 -z 4 -s OverApprox --binary-query-io 2 --write-simplified /home/mcc/BenchKit/bin/tmp/tmp.fad69d5uHS --write-reduced /home/mcc/BenchKit/bin/tmp/tmp.umLK9Oe4bw -x 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 ./model.pnml ./LTLFireability.xml

FORMULA MAPK-PT-00640-LTLFireability-07 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT LP_APPROX
Query index 7 was solved

Query is satisfied.

FORMULA MAPK-PT-00640-LTLFireability-11 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT LP_APPROX
Query index 11 was solved

Query is satisfied.

FORMULA MAPK-PT-00640-LTLFireability-12 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT LP_APPROX
Query index 12 was solved

Query is satisfied.

FORMULA MAPK-PT-00640-LTLFireability-13 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT LP_APPROX
Query index 13 was solved

Query is NOT satisfied.
Solution found by parallel simplification (step 0)
Solution found by parallel simplification (step 0)
Solution found by parallel simplification (step 0)
Solution found by parallel simplification (step 0)
Time left: 3590

---------------------------------------------------
Step 1: Parallel processing
---------------------------------------------------
Doing parallel verification of individual queries (12 in total)
Each query is verified by 4 parallel strategies for 299 seconds
------------------- QUERY 1 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.015729 on verification
@@@0.02,20096@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n '-ltl ndfs -q 0 -l 0 -d 119' /home/mcc/BenchKit/bin/tmp/tmp.umLK9Oe4bw /home/mcc/BenchKit/bin/tmp/tmp.fad69d5uHS --binary-query-io 1 -x 1 -n

FORMULA MAPK-PT-00640-LTLFireability-00 FALSE TECHNIQUES EXPLICIT NDFS WEAK_SKIP HEURISTIC AUTOMATON_HEUR OPTIM-1
Time left: 3590
------------------- QUERY 2 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.010402 on verification
@@@0.03,19604@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n '-ltl ndfs -q 0 -l 0 -d 119' /home/mcc/BenchKit/bin/tmp/tmp.umLK9Oe4bw /home/mcc/BenchKit/bin/tmp/tmp.fad69d5uHS --binary-query-io 1 -x 2 -n

FORMULA MAPK-PT-00640-LTLFireability-05 FALSE TECHNIQUES EXPLICIT NDFS WEAK_SKIP HEURISTIC AUTOMATON_HEUR OPTIM-1
Time left: 3590
------------------- QUERY 3 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.058443 on verification
@@@0.06,147664@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n '-ltl tarjan --ltl-heur dist -q 0 -l 0 -d 119' /home/mcc/BenchKit/bin/tmp/tmp.umLK9Oe4bw /home/mcc/BenchKit/bin/tmp/tmp.fad69d5uHS --binary-query-io 1 -x 3 -n

FORMULA MAPK-PT-00640-LTLFireability-01 FALSE TECHNIQUES EXPLICIT TARJAN WEAK_SKIP STUBBORN AUT_STUB HEURISTIC DIST_HEUR OPTIM-1
Time left: 3589
------------------- QUERY 4 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.013382 on verification
@@@0.01,19924@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n '-ltl ndfs -q 0 -l 0 -d 119' /home/mcc/BenchKit/bin/tmp/tmp.umLK9Oe4bw /home/mcc/BenchKit/bin/tmp/tmp.fad69d5uHS --binary-query-io 1 -x 4 -n

FORMULA MAPK-PT-00640-LTLFireability-06 FALSE TECHNIQUES EXPLICIT NDFS WEAK_SKIP HEURISTIC AUTOMATON_HEUR OPTIM-1
Time left: 3589
------------------- QUERY 5 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.02667 on verification
@@@0.02,21336@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n '-ltl ndfs -q 0 -l 0 -d 119' /home/mcc/BenchKit/bin/tmp/tmp.umLK9Oe4bw /home/mcc/BenchKit/bin/tmp/tmp.fad69d5uHS --binary-query-io 1 -x 5 -n

FORMULA MAPK-PT-00640-LTLFireability-10 FALSE TECHNIQUES EXPLICIT NDFS WEAK_SKIP HEURISTIC AUTOMATON_HEUR OPTIM-1
Time left: 3589
------------------- QUERY 6 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.063599 on verification
@@@0.06,148732@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n '-ltl tarjan --ltl-heur fire-count -q 0 -l 0 -d 119' /home/mcc/BenchKit/bin/tmp/tmp.umLK9Oe4bw /home/mcc/BenchKit/bin/tmp/tmp.fad69d5uHS --binary-query-io 1 -x 6 -n

FORMULA MAPK-PT-00640-LTLFireability-09 FALSE TECHNIQUES EXPLICIT TARJAN WEAK_SKIP STUBBORN AUT_STUB HEURISTIC LOGFIRECOUNT_HEUR(5000) OPTIM-1
Time left: 3589
------------------- QUERY 7 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.012073 on verification
@@@0.01,19836@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n '-ltl ndfs -q 0 -l 0 -d 119' /home/mcc/BenchKit/bin/tmp/tmp.umLK9Oe4bw /home/mcc/BenchKit/bin/tmp/tmp.fad69d5uHS --binary-query-io 1 -x 7 -n

FORMULA MAPK-PT-00640-LTLFireability-15 FALSE TECHNIQUES EXPLICIT NDFS WEAK_SKIP HEURISTIC AUTOMATON_HEUR OPTIM-1
Time left: 3588
------------------- QUERY 8 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.009444 on verification
@@@0.01,19764@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n '-ltl ndfs -q 0 -l 0 -d 119' /home/mcc/BenchKit/bin/tmp/tmp.umLK9Oe4bw /home/mcc/BenchKit/bin/tmp/tmp.fad69d5uHS --binary-query-io 1 -x 8 -n

FORMULA MAPK-PT-00640-LTLFireability-02 FALSE TECHNIQUES EXPLICIT NDFS WEAK_SKIP HEURISTIC AUTOMATON_HEUR OPTIM-1
Time left: 3588
------------------- QUERY 9 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.554215 on verification
@@@0.56,169420@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n '-ltl tarjan --ltl-heur aut -s DFS -p -q 0 -l 0 -d 119' /home/mcc/BenchKit/bin/tmp/tmp.umLK9Oe4bw /home/mcc/BenchKit/bin/tmp/tmp.fad69d5uHS --binary-query-io 1 -x 9 -n

FORMULA MAPK-PT-00640-LTLFireability-04 FALSE TECHNIQUES EXPLICIT TARJAN WEAK_SKIP OPTIM-1
Time left: 3587
------------------- QUERY 10 ----------------------
No solution found
parallel: Warning: This job was killed because it timed out:
parallel: Warning: eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n '-ltl tarjan --ltl-heur dist -q 0 -l 0 -d 119' /home/mcc/BenchKit/bin/tmp/tmp.umLK9Oe4bw /home/mcc/BenchKit/bin/tmp/tmp.fad69d5uHS --binary-query-io 1 -x 10 -n
parallel: Warning: This job was killed because it timed out:
parallel: Warning: eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n '-ltl tarjan --ltl-heur fire-count -q 0 -l 0 -d 119' /home/mcc/BenchKit/bin/tmp/tmp.umLK9Oe4bw /home/mcc/BenchKit/bin/tmp/tmp.fad69d5uHS --binary-query-io 1 -x 10 -n
parallel: Warning: This job was killed because it timed out:
parallel: Warning: eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n '-ltl tarjan --ltl-heur aut -s DFS -p -q 0 -l 0 -d 119' /home/mcc/BenchKit/bin/tmp/tmp.umLK9Oe4bw /home/mcc/BenchKit/bin/tmp/tmp.fad69d5uHS --binary-query-io 1 -x 10 -n
parallel: Warning: This job was killed because it timed out:
parallel: Warning: eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n '-ltl ndfs -q 0 -l 0 -d 119' /home/mcc/BenchKit/bin/tmp/tmp.umLK9Oe4bw /home/mcc/BenchKit/bin/tmp/tmp.fad69d5uHS --binary-query-io 1 -x 10 -n


Time left: 3286
------------------- QUERY 11 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.01242 on verification
@@@0.03,20636@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n '-ltl ndfs -q 0 -l 0 -d 119' /home/mcc/BenchKit/bin/tmp/tmp.umLK9Oe4bw /home/mcc/BenchKit/bin/tmp/tmp.fad69d5uHS --binary-query-io 1 -x 11 -n

FORMULA MAPK-PT-00640-LTLFireability-08 FALSE TECHNIQUES EXPLICIT NDFS WEAK_SKIP HEURISTIC AUTOMATON_HEUR OPTIM-1
Time left: 3285
------------------- QUERY 12 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.012093 on verification
@@@0.01,19684@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n '-ltl ndfs -q 0 -l 0 -d 119' /home/mcc/BenchKit/bin/tmp/tmp.umLK9Oe4bw /home/mcc/BenchKit/bin/tmp/tmp.fad69d5uHS --binary-query-io 1 -x 12 -n

FORMULA MAPK-PT-00640-LTLFireability-14 FALSE TECHNIQUES EXPLICIT NDFS WEAK_SKIP HEURISTIC AUTOMATON_HEUR OPTIM-1
Time left: 3285
---------------------------------------------------
Step 2: Sequential processing
---------------------------------------------------
Remaining 1 queries are verified sequentially.
Each query is verified for a dynamic timeout (at least 598 seconds)
Time left: 3285
------------------- QUERY 10 ----------------------
Running query 10 for 3285 seconds. Remaining: 1 queries and 3285 seconds
No solution found
terminate called after throwing an instance of 'std::bad_alloc'
what(): std::bad_alloc
Command terminated by signal 6
@@@1683.29,15691100@@@


Time left: 1602
Time left: 1602
---------------------------------------------------
Step 4: Random Parallel processing
---------------------------------------------------
Doing random parallel verification of individual queries (1 in total)
Each query is verified by 4 parallel strategies for 1602 seconds
------------------- QUERY 10 ----------------------
No solution found
Command terminated by signal 9
@@@103.75,4201444@@@
Command terminated by signal 9
@@@141.37,5580420@@@
Command terminated by signal 9
@@@279.71,8234628@@@
terminate called after throwing an instance of 'std::bad_alloc'
what(): std::bad_alloc
Command terminated by signal 6
@@@431.78,14928760@@@


Time left: 1170
Time left: 1170
---------------------------------------------------
Step 4: Random Parallel processing
---------------------------------------------------
Doing random parallel verification of individual queries (1 in total)
Each query is verified by 4 parallel strategies for 1170 seconds
------------------- QUERY 10 ----------------------
No solution found
Command terminated by signal 9
@@@134.82,4311832@@@
Command terminated by signal 9
@@@223.43,5646520@@@
Command terminated by signal 9
@@@308.63,8627148@@@
terminate called after throwing an instance of 'std::bad_alloc'
what(): std::bad_alloc
Command terminated by signal 6
@@@475.10,14922652@@@


Time left: 694
Time left: 694
---------------------------------------------------
Step 4: Random Parallel processing
---------------------------------------------------
Doing random parallel verification of individual queries (1 in total)
Each query is verified by 4 parallel strategies for 694 seconds
------------------- QUERY 10 ----------------------
No solution found
Command terminated by signal 9
@@@141.12,4304480@@@
Command terminated by signal 9
@@@187.56,5546084@@@
Command terminated by signal 9
@@@351.77,8265088@@@
terminate called after throwing an instance of 'std::bad_alloc'
what(): std::bad_alloc
Command terminated by signal 6
@@@515.60,14924736@@@


Time left: 178
Time left: 178
---------------------------------------------------
Step 4: Random Parallel processing
---------------------------------------------------
Doing random parallel verification of individual queries (1 in total)
Each query is verified by 4 parallel strategies for 178 seconds
------------------- QUERY 10 ----------------------

BK_TIME_CONFINEMENT_REACHED

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

CPN OverApproximation is only usable on colored models

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="MAPK-PT-00640"
export BK_EXAMINATION="LTLFireability"
export BK_TOOL="tapaal"
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 2-5568"
echo " Executing tool tapaal"
echo " Input is MAPK-PT-00640, examination is LTLFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r228-tall-171649618100460"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/MAPK-PT-00640.tgz
mv MAPK-PT-00640 execution
cd execution
if [ "LTLFireability" = "ReachabilityDeadlock" ] || [ "LTLFireability" = "UpperBounds" ] || [ "LTLFireability" = "QuasiLiveness" ] || [ "LTLFireability" = "StableMarking" ] || [ "LTLFireability" = "Liveness" ] || [ "LTLFireability" = "OneSafe" ] || [ "LTLFireability" = "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 [ "LTLFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "LTLFireability" != "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 "LTLFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property LTLFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "LTLFireability.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 '' LTLFireability.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "LTLFireability" = "ReachabilityDeadlock" ] || [ "LTLFireability" = "QuasiLiveness" ] || [ "LTLFireability" = "StableMarking" ] || [ "LTLFireability" = "Liveness" ] || [ "LTLFireability" = "OneSafe" ] ; then
echo "FORMULA_NAME LTLFireability"
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 ;