Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2022-input.r219-tall-165286021100846.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2022-input.qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
..............
=====================================================================
Generated by BenchKit 2-4028
Executing tool tapaal
Input is ShieldRVs-PT-040B, examination is ReachabilityCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r219-tall-165286021100846
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 928K
-rw-r--r-- 1 mcc users 6.3K Apr 30 06:37 CTLCardinality.txt
-rw-r--r-- 1 mcc users 66K Apr 30 06:37 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.9K Apr 30 06:37 CTLFireability.txt
-rw-r--r-- 1 mcc users 67K Apr 30 06:37 CTLFireability.xml
-rw-r--r-- 1 mcc users 6 May 10 09:34 equiv_col
-rw-r--r-- 1 mcc users 4.2K May 10 09:34 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.5K May 10 09:34 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 5 May 10 09:34 instance
-rw-r--r-- 1 mcc users 6 May 10 09:34 iscolored
-rw-r--r-- 1 mcc users 3.9K May 9 08:59 LTLCardinality.txt
-rw-r--r-- 1 mcc users 29K May 9 08:59 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K May 9 08:59 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K May 9 08:59 LTLFireability.xml
-rw-r--r-- 1 mcc users 498K May 10 09:34 model.pnml
-rw-r--r-- 1 mcc users 9.5K Apr 30 06:38 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 100K Apr 30 06:38 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 7.2K Apr 30 06:37 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 60K Apr 30 06:37 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K May 9 08:59 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K May 9 08:59 UpperBounds.xml

--------------------
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 ShieldRVs-PT-040B-ReachabilityCardinality-00
FORMULA_NAME ShieldRVs-PT-040B-ReachabilityCardinality-01
FORMULA_NAME ShieldRVs-PT-040B-ReachabilityCardinality-02
FORMULA_NAME ShieldRVs-PT-040B-ReachabilityCardinality-03
FORMULA_NAME ShieldRVs-PT-040B-ReachabilityCardinality-04
FORMULA_NAME ShieldRVs-PT-040B-ReachabilityCardinality-05
FORMULA_NAME ShieldRVs-PT-040B-ReachabilityCardinality-06
FORMULA_NAME ShieldRVs-PT-040B-ReachabilityCardinality-07
FORMULA_NAME ShieldRVs-PT-040B-ReachabilityCardinality-08
FORMULA_NAME ShieldRVs-PT-040B-ReachabilityCardinality-09
FORMULA_NAME ShieldRVs-PT-040B-ReachabilityCardinality-10
FORMULA_NAME ShieldRVs-PT-040B-ReachabilityCardinality-11
FORMULA_NAME ShieldRVs-PT-040B-ReachabilityCardinality-12
FORMULA_NAME ShieldRVs-PT-040B-ReachabilityCardinality-13
FORMULA_NAME ShieldRVs-PT-040B-ReachabilityCardinality-14
FORMULA_NAME ShieldRVs-PT-040B-ReachabilityCardinality-15

=== Now, execution of the tool begins

BK_START 1654262115628

tapaal
Got BK_BIN_PATH=/home/mcc/BenchKit/bin/
---> tapaal --- TAPAAL v5
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 ReachabilityCardinality *
**********************************************
TEMPDIR=/home/mcc/BenchKit/bin/tmp
QF=/home/mcc/BenchKit/bin/tmp/tmp.BLZvubeTcV
MF=/home/mcc/BenchKit/bin/tmp/tmp.9s6N09u3iF
Time left: 3590
---------------------------------------------------
Step -1: Stripping Colors
---------------------------------------------------
Verifying stripped models (16 in total)
/home/mcc/BenchKit/bin/verifypn -n -c -q 718 -l 29 -d 299 -z 4 -x 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 ./model.pnml ./ReachabilityCardinality.xml
CPN OverApproximation is only usable on colored models
Time left: 3590
---------------------------------------------------
Step 0: Parallel Simplification
---------------------------------------------------
Doing parallel simplification (16 in total)
Total simplification timout is 718 -- reduction timeout is 299
timeout 3590 /home/mcc/BenchKit/bin/verifypn -n -q 718 -l 29 -d 299 -z 4 -s OverApprox --binary-query-io 2 --write-simplified /home/mcc/BenchKit/bin/tmp/tmp.BLZvubeTcV --write-reduced /home/mcc/BenchKit/bin/tmp/tmp.9s6N09u3iF -x 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 ./model.pnml ./ReachabilityCardinality.xml
FORMULA ShieldRVs-PT-040B-ReachabilityCardinality-03 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT LP_APPROX
Query index 3 was solved

Query is NOT satisfied.

FORMULA ShieldRVs-PT-040B-ReachabilityCardinality-05 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT LP_APPROX
Query index 5 was solved

Query is NOT satisfied.

FORMULA ShieldRVs-PT-040B-ReachabilityCardinality-07 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT LP_APPROX
Query index 7 was solved

Query is satisfied.

FORMULA ShieldRVs-PT-040B-ReachabilityCardinality-15 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT LP_APPROX
Query index 15 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: 3563

---------------------------------------------------
Step 1: Parallel processing
---------------------------------------------------
Doing parallel verification of individual queries (12 in total)
Each query is verified by 4 parallel strategies for 256 seconds
------------------- QUERY 1 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is satisfied.

Spent 0.010192 on verification
@@@0.04,9156@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ BestFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.9s6N09u3iF /home/mcc/BenchKit/bin/tmp/tmp.BLZvubeTcV --binary-query-io 1 -x 1 -n

FORMULA ShieldRVs-PT-040B-ReachabilityCardinality-04 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 3563
------------------- QUERY 2 ----------------------
Solution found by parallel processing (step 1)
Search strategy option was ignored as the TAR engine is called.
Query index 0 was solved

Query is satisfied.


Solved using Trace Abstraction Refinement

Spent 0.000103 on verification
@@@0.02,8612@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -tar\ -s\ RDFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.9s6N09u3iF /home/mcc/BenchKit/bin/tmp/tmp.BLZvubeTcV --binary-query-io 1 -x 2 -n

FORMULA ShieldRVs-PT-040B-ReachabilityCardinality-06 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT TRACE_ABSTRACTION_REFINEMENT
Time left: 3562
------------------- QUERY 3 ----------------------
Solution found by parallel processing (step 1)
Search strategy option was ignored as the TAR engine is called.
Query index 0 was solved

Query is satisfied.


Solved using Trace Abstraction Refinement

Spent 0.000169 on verification
@@@0.02,8624@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -tar\ -s\ RDFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.9s6N09u3iF /home/mcc/BenchKit/bin/tmp/tmp.BLZvubeTcV --binary-query-io 1 -x 3 -n

FORMULA ShieldRVs-PT-040B-ReachabilityCardinality-10 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT TRACE_ABSTRACTION_REFINEMENT
Time left: 3562
------------------- QUERY 4 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is satisfied.

Spent 0.001664 on verification
@@@0.02,9152@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ BestFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.9s6N09u3iF /home/mcc/BenchKit/bin/tmp/tmp.BLZvubeTcV --binary-query-io 1 -x 4 -n

FORMULA ShieldRVs-PT-040B-ReachabilityCardinality-14 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 3562
------------------- QUERY 5 ----------------------
Solution found by parallel processing (step 1)
Search strategy option was ignored as the TAR engine is called.
Query index 0 was solved

Query is NOT satisfied.


Solved using Trace Abstraction Refinement

Spent 0.000199 on verification
@@@0.02,8556@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -tar\ -s\ RDFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.9s6N09u3iF /home/mcc/BenchKit/bin/tmp/tmp.BLZvubeTcV --binary-query-io 1 -x 5 -n

FORMULA ShieldRVs-PT-040B-ReachabilityCardinality-00 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT TRACE_ABSTRACTION_REFINEMENT
Time left: 3562
------------------- QUERY 6 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is NOT satisfied.

Spent 0.000845 on verification
Search strategy option was ignored as the TAR engine is called.
FORMULA ShieldRVs-PT-040B-ReachabilityCardinality-08 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT TRACE_ABSTRACTION_REFINEMENT
Query index 0 was solved

Query is NOT satisfied.


Solved using Trace Abstraction Refinement

Spent 0.000215 on verification
@@@0.03,8692@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -tar\ -s\ RDFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.9s6N09u3iF /home/mcc/BenchKit/bin/tmp/tmp.BLZvubeTcV --binary-query-io 1 -x 6 -n

FORMULA ShieldRVs-PT-040B-ReachabilityCardinality-08 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 3561
------------------- QUERY 7 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is NOT satisfied.

Spent 0.000612 on verification
@@@0.01,9032@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ BestFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.9s6N09u3iF /home/mcc/BenchKit/bin/tmp/tmp.BLZvubeTcV --binary-query-io 1 -x 7 -n

FORMULA ShieldRVs-PT-040B-ReachabilityCardinality-13 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 3561
------------------- QUERY 8 ----------------------
Solution found by parallel processing (step 1)
Search strategy option was ignored as the TAR engine is called.
Query index 0 was solved

Query is satisfied.


Solved using Trace Abstraction Refinement

Spent 166.372 on verification
@@@166.40,17568@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -tar\ -s\ RDFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.9s6N09u3iF /home/mcc/BenchKit/bin/tmp/tmp.BLZvubeTcV --binary-query-io 1 -x 8 -n

FORMULA ShieldRVs-PT-040B-ReachabilityCardinality-09 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT TRACE_ABSTRACTION_REFINEMENT
Time left: 3394
------------------- QUERY 9 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is NOT satisfied.

Spent 0.000776 on verification
@@@0.02,9184@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ BestFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.9s6N09u3iF /home/mcc/BenchKit/bin/tmp/tmp.BLZvubeTcV --binary-query-io 1 -x 9 -n

FORMULA ShieldRVs-PT-040B-ReachabilityCardinality-02 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 3394
------------------- QUERY 10 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is NOT satisfied.

Spent 0.000939 on verification
@@@0.02,9152@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ BestFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.9s6N09u3iF /home/mcc/BenchKit/bin/tmp/tmp.BLZvubeTcV --binary-query-io 1 -x 10 -n

FORMULA ShieldRVs-PT-040B-ReachabilityCardinality-12 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 3394
------------------- QUERY 11 ----------------------
No solution found



Time left: 3136
------------------- QUERY 12 ----------------------
No solution found



Time left: 2878
---------------------------------------------------
Step 2: Sequential processing
---------------------------------------------------
Remaining 2 queries are verified sequentially.
Each query is verified for a dynamic timeout (at least 512 seconds)
Time left: 2878
------------------- QUERY 11 ----------------------
Running query 11 for 1439 seconds. Remaining: 2 queries and 2878 seconds
No solution found



Time left: 1437
------------------- QUERY 12 ----------------------
Running query 12 for 1437 seconds. Remaining: 1 queries and 1437 seconds
Solution found by sequential processing (step 2)
FORMULA ShieldRVs-PT-040B-ReachabilityCardinality-11 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Query index 0 was solved

Query is satisfied.

Spent 0.003892 on verification
@@@1.22,11332@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ RDFS\ -q\ 40\ -l\ 5\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.9s6N09u3iF /home/mcc/BenchKit/bin/tmp/tmp.BLZvubeTcV --binary-query-io 1 -x 12 -n
Query index 0 was solved

Query is satisfied.

Spent 0.003892 on verification
@@@1.22,11332@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ RDFS\ -q\ 40\ -l\ 5\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.9s6N09u3iF /home/mcc/BenchKit/bin/tmp/tmp.BLZvubeTcV --binary-query-io 1 -x 12 -n

FORMULA ShieldRVs-PT-040B-ReachabilityCardinality-11 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 1436
Time left: 1436
---------------------------------------------------
Step 4: Random Parallel processing
---------------------------------------------------
Doing random parallel verification of individual queries (1 in total)
Each query is verified by 4 parallel strategies for 1436 seconds
------------------- QUERY 11 ----------------------
No solution found
Command terminated by signal 9
@@@723.01,7848660@@@
Command terminated by signal 9
@@@1431.79,12608052@@@


Time left: -4
Out of time, terminating!
terminated-with-cleanup

BK_STOP 1654265709038

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

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="ShieldRVs-PT-040B"
export BK_EXAMINATION="ReachabilityCardinality"
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 2-4028"
echo " Executing tool tapaal"
echo " Input is ShieldRVs-PT-040B, examination is ReachabilityCardinality"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r219-tall-165286021100846"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/ShieldRVs-PT-040B.tgz
mv ShieldRVs-PT-040B execution
cd execution
if [ "ReachabilityCardinality" = "ReachabilityDeadlock" ] || [ "ReachabilityCardinality" = "UpperBounds" ] || [ "ReachabilityCardinality" = "QuasiLiveness" ] || [ "ReachabilityCardinality" = "StableMarking" ] || [ "ReachabilityCardinality" = "Liveness" ] || [ "ReachabilityCardinality" = "OneSafe" ] || [ "ReachabilityCardinality" = "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 [ "ReachabilityCardinality" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "ReachabilityCardinality" != "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 "ReachabilityCardinality.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property ReachabilityCardinality.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "ReachabilityCardinality.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 '' ReachabilityCardinality.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "ReachabilityCardinality" = "ReachabilityDeadlock" ] || [ "ReachabilityCardinality" = "QuasiLiveness" ] || [ "ReachabilityCardinality" = "StableMarking" ] || [ "ReachabilityCardinality" = "Liveness" ] || [ "ReachabilityCardinality" = "OneSafe" ] ; then
echo "FORMULA_NAME ReachabilityCardinality"
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 ;