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.r382-smll-167891832700301.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 gold2022
Input is SemanticWebServices-PT-S128P15, examination is CTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r382-smll-167891832700301
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 744K
-rw-r--r-- 1 mcc users 6.7K Feb 26 10:23 CTLCardinality.txt
-rw-r--r-- 1 mcc users 70K Feb 26 10:23 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.3K Feb 26 10:23 CTLFireability.txt
-rw-r--r-- 1 mcc users 46K Feb 26 10:23 CTLFireability.xml
-rw-r--r-- 1 mcc users 6 Mar 5 18:23 equiv_col
-rw-r--r-- 1 mcc users 8 Mar 5 18:23 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:23 iscolored
-rw-r--r-- 1 mcc users 3.9K Feb 25 16:51 LTLCardinality.txt
-rw-r--r-- 1 mcc users 25K Feb 25 16:51 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K Feb 25 16:51 LTLFireability.txt
-rw-r--r-- 1 mcc users 16K Feb 25 16:51 LTLFireability.xml
-rw-r--r-- 1 mcc users 227K Mar 5 18:23 model.pnml
-rw-r--r-- 1 mcc users 17K Feb 26 10:24 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 191K Feb 26 10:24 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 9.3K Feb 26 10:24 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 81K Feb 26 10:24 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K Feb 25 16:51 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.9K Feb 25 16:51 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 SemanticWebServices-PT-S128P15-CTLCardinality-00
FORMULA_NAME SemanticWebServices-PT-S128P15-CTLCardinality-01
FORMULA_NAME SemanticWebServices-PT-S128P15-CTLCardinality-02
FORMULA_NAME SemanticWebServices-PT-S128P15-CTLCardinality-03
FORMULA_NAME SemanticWebServices-PT-S128P15-CTLCardinality-04
FORMULA_NAME SemanticWebServices-PT-S128P15-CTLCardinality-05
FORMULA_NAME SemanticWebServices-PT-S128P15-CTLCardinality-06
FORMULA_NAME SemanticWebServices-PT-S128P15-CTLCardinality-07
FORMULA_NAME SemanticWebServices-PT-S128P15-CTLCardinality-08
FORMULA_NAME SemanticWebServices-PT-S128P15-CTLCardinality-09
FORMULA_NAME SemanticWebServices-PT-S128P15-CTLCardinality-10
FORMULA_NAME SemanticWebServices-PT-S128P15-CTLCardinality-11
FORMULA_NAME SemanticWebServices-PT-S128P15-CTLCardinality-12
FORMULA_NAME SemanticWebServices-PT-S128P15-CTLCardinality-13
FORMULA_NAME SemanticWebServices-PT-S128P15-CTLCardinality-14
FORMULA_NAME SemanticWebServices-PT-S128P15-CTLCardinality-15

=== Now, execution of the tool begins

BK_START 1679324863605

gold2022
Got BK_BIN_PATH=/home/mcc/BenchKit/bin/
---> gold2022 --- 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 CTLCardinality *
*************************************
TEMPDIR=/home/mcc/BenchKit/bin/tmp
QF=/home/mcc/BenchKit/bin/tmp/tmp.E8a70A4rIW
MF=/home/mcc/BenchKit/bin/tmp/tmp.TTz4YV8RdD
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 ./CTLCardinality.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.E8a70A4rIW --write-reduced /home/mcc/BenchKit/bin/tmp/tmp.TTz4YV8RdD -x 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 ./model.pnml ./CTLCardinality.xml

Time left: 3590

---------------------------------------------------
Step 1: Parallel processing
---------------------------------------------------
Doing parallel verification of individual queries (16 in total)
Each query is verified by 4 parallel strategies for 299 seconds
------------------- QUERY 1 ----------------------
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 0.000201 on verification
@@@0.01,6468@@@
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.TTz4YV8RdD /home/mcc/BenchKit/bin/tmp/tmp.E8a70A4rIW --binary-query-io 1 -x 1 -n

FORMULA SemanticWebServices-PT-S128P15-CTLCardinality-05 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT TRACE_ABSTRACTION_REFINEMENT
Time left: 3589
------------------- QUERY 2 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is satisfied.

Spent 0.001277 on verification
@@@0.00,7520@@@
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.TTz4YV8RdD /home/mcc/BenchKit/bin/tmp/tmp.E8a70A4rIW --binary-query-io 1 -x 2 -n

FORMULA SemanticWebServices-PT-S128P15-CTLCardinality-15 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 3589
------------------- QUERY 3 ----------------------
Solution found by parallel processing (step 1)


Query index 0 was solved
Query is NOT satisfied.

Spent 0.051923 on verification
@@@0.07,60068@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ BFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.TTz4YV8RdD /home/mcc/BenchKit/bin/tmp/tmp.E8a70A4rIW --binary-query-io 1 -x 3 -n

FORMULA SemanticWebServices-PT-S128P15-CTLCardinality-11 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION SAT_SMT STUBBORN_SETS CTL_CZERO
Time left: 3588
------------------- QUERY 4 ----------------------
No solution found
Command terminated by signal 9
@@@74.05,7573240@@@
Command terminated by signal 9
@@@158.34,8921948@@@


Time left: 3287
------------------- QUERY 5 ----------------------
Solution found by parallel processing (step 1)


Query index 0 was solved
Query is satisfied.

Spent 0.063475 on verification
@@@0.10,60036@@@
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.TTz4YV8RdD /home/mcc/BenchKit/bin/tmp/tmp.E8a70A4rIW --binary-query-io 1 -x 5 -n

FORMULA SemanticWebServices-PT-S128P15-CTLCardinality-03 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION SAT_SMT STUBBORN_SETS CTL_CZERO
Time left: 3286
------------------- QUERY 6 ----------------------
Solution found by parallel processing (step 1)


Query index 0 was solved
Query is satisfied.

Spent 0.060202 on verification
@@@0.06,60120@@@
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.TTz4YV8RdD /home/mcc/BenchKit/bin/tmp/tmp.E8a70A4rIW --binary-query-io 1 -x 6 -n

FORMULA SemanticWebServices-PT-S128P15-CTLCardinality-02 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION SAT_SMT STUBBORN_SETS CTL_CZERO
Time left: 3286
------------------- QUERY 7 ----------------------
No solution found
Command terminated by signal 9
@@@82.44,6445284@@@
Command terminated by signal 9
@@@141.21,9487204@@@


Time left: 2984
------------------- QUERY 8 ----------------------
Solution found by parallel processing (step 1)


Query index 0 was solved
Query is NOT satisfied.

Spent 0.095276 on verification
@@@0.14,60100@@@


Query index 0 was solved
Query is NOT satisfied.

Spent 0.109854 on verification
@@@0.16,60260@@@
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.TTz4YV8RdD /home/mcc/BenchKit/bin/tmp/tmp.E8a70A4rIW --binary-query-io 1 -x 8 -n
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ DFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.TTz4YV8RdD /home/mcc/BenchKit/bin/tmp/tmp.E8a70A4rIW --binary-query-io 1 -x 8 -n

FORMULA SemanticWebServices-PT-S128P15-CTLCardinality-01 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION SAT_SMT STUBBORN_SETS CTL_CZERO
Time left: 2984
------------------- QUERY 9 ----------------------
Solution found by parallel processing (step 1)


Query index 0 was solved
Query is NOT satisfied.

Spent 5.23771 on verification
@@@5.26,397988@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ BFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.TTz4YV8RdD /home/mcc/BenchKit/bin/tmp/tmp.E8a70A4rIW --binary-query-io 1 -x 9 -n

FORMULA SemanticWebServices-PT-S128P15-CTLCardinality-14 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION SAT_SMT STUBBORN_SETS CTL_CZERO
Time left: 2978
------------------- QUERY 10 ----------------------
No solution found
Command terminated by signal 9
@@@82.68,6426400@@@
Command terminated by signal 9
@@@141.23,9217788@@@


Time left: 2676
------------------- QUERY 11 ----------------------
Solution found by parallel processing (step 1)


Query index 0 was solved
Query is satisfied.

Spent 0.088165 on verification
@@@0.11,60084@@@
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.TTz4YV8RdD /home/mcc/BenchKit/bin/tmp/tmp.E8a70A4rIW --binary-query-io 1 -x 11 -n

FORMULA SemanticWebServices-PT-S128P15-CTLCardinality-06 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION SAT_SMT STUBBORN_SETS CTL_CZERO
Time left: 2676
------------------- QUERY 12 ----------------------
No solution found
Command terminated by signal 9
@@@81.70,5895240@@@
Command terminated by signal 9
@@@131.76,8074764@@@
Command terminated by signal 9
@@@287.20,15955648@@@


Time left: 2375
------------------- QUERY 13 ----------------------
Solution found by parallel processing (step 1)


Query index 0 was solved
Query is NOT satisfied.

Spent 0.105815 on verification
@@@0.13,60116@@@
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.TTz4YV8RdD /home/mcc/BenchKit/bin/tmp/tmp.E8a70A4rIW --binary-query-io 1 -x 13 -n

FORMULA SemanticWebServices-PT-S128P15-CTLCardinality-07 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION SAT_SMT STUBBORN_SETS CTL_CZERO
Time left: 2374
------------------- QUERY 14 ----------------------
Solution found by parallel processing (step 1)


Query index 0 was solved
Query is NOT satisfied.

Spent 0.117828 on verification
@@@0.12,60156@@@
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.TTz4YV8RdD /home/mcc/BenchKit/bin/tmp/tmp.E8a70A4rIW --binary-query-io 1 -x 14 -n

FORMULA SemanticWebServices-PT-S128P15-CTLCardinality-00 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION SAT_SMT STUBBORN_SETS CTL_CZERO
Time left: 2374
------------------- QUERY 15 ----------------------
No solution found
Command terminated by signal 9
@@@154.10,6226984@@@
Command terminated by signal 9
@@@248.69,8638212@@@


Time left: 2072
------------------- QUERY 16 ----------------------
Solution found by parallel processing (step 1)


Query index 0 was solved
Query is satisfied.

Spent 0.133492 on verification
@@@0.17,60196@@@
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.TTz4YV8RdD /home/mcc/BenchKit/bin/tmp/tmp.E8a70A4rIW --binary-query-io 1 -x 16 -n

FORMULA SemanticWebServices-PT-S128P15-CTLCardinality-10 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION SAT_SMT STUBBORN_SETS CTL_CZERO
Time left: 2071
---------------------------------------------------
Step 2: Sequential processing
---------------------------------------------------
Remaining 5 queries are verified sequentially.
Each query is verified for a dynamic timeout (at least 512 seconds)
Time left: 2071
------------------- QUERY 4 ----------------------
Running query 4 for 512 seconds. Remaining: 5 queries and 2071 seconds
No solution found
Command terminated by signal 9
@@@99.27,10145424@@@
Command terminated by signal 9
@@@248.58,16146808@@@


Time left: 1822
------------------- QUERY 7 ----------------------
Running query 7 for 512 seconds. Remaining: 4 queries and 1822 seconds
No solution found
Command terminated by signal 9
@@@130.85,10354856@@@
Command terminated by signal 9
@@@381.37,16146212@@@


Time left: 1441
------------------- QUERY 10 ----------------------
Running query 10 for 512 seconds. Remaining: 3 queries and 1441 seconds
No solution found
Command terminated by signal 9
@@@130.65,9852628@@@
Command terminated by signal 9
@@@326.05,16145708@@@


Time left: 1114
------------------- QUERY 12 ----------------------
Running query 12 for 557 seconds. Remaining: 2 queries and 1114 seconds
No solution found
Command terminated by signal 9
@@@113.02,8740908@@@
terminate called after throwing an instance of 'std::bad_alloc'
what(): std::bad_alloc
Command terminated by signal 6
@@@250.44,16036064@@@


Time left: 863
------------------- QUERY 15 ----------------------
Running query 15 for 863 seconds. Remaining: 1 queries and 863 seconds
No solution found
Command terminated by signal 9
@@@171.17,8624292@@@
terminate called after throwing an instance of 'std::bad_alloc'
what(): std::bad_alloc
Command terminated by signal 6
@@@346.92,16065276@@@


Time left: 516
Time left: 516
---------------------------------------------------
Step 4: Random Parallel processing
---------------------------------------------------
Doing random parallel verification of individual queries (5 in total)
Each query is verified by 4 parallel strategies for 103 seconds
------------------- QUERY 4 ----------------------
No solution found
Command terminated by signal 9
@@@47.87,4696248@@@
Command terminated by signal 9
@@@89.46,6482412@@@


Time left: 410
------------------- QUERY 7 ----------------------
No solution found
Command terminated by signal 9
@@@85.68,5218944@@@


Time left: 304
------------------- QUERY 10 ----------------------
No solution found
Command terminated by signal 9
@@@80.90,4515252@@@


Time left: 197
------------------- QUERY 12 ----------------------
No solution found
Command terminated by signal 9
@@@64.60,4413912@@@
Command terminated by signal 9
@@@105.60,5482696@@@


Time left: 89
------------------- QUERY 15 ----------------------
No solution found



Time left: -2
Out of time, terminating!
terminated-with-cleanup

BK_STOP 1679328455833

--------------------
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="SemanticWebServices-PT-S128P15"
export BK_EXAMINATION="CTLCardinality"
export BK_TOOL="gold2022"
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 gold2022"
echo " Input is SemanticWebServices-PT-S128P15, examination is CTLCardinality"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r382-smll-167891832700301"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/SemanticWebServices-PT-S128P15.tgz
mv SemanticWebServices-PT-S128P15 execution
cd execution
if [ "CTLCardinality" = "ReachabilityDeadlock" ] || [ "CTLCardinality" = "UpperBounds" ] || [ "CTLCardinality" = "QuasiLiveness" ] || [ "CTLCardinality" = "StableMarking" ] || [ "CTLCardinality" = "Liveness" ] || [ "CTLCardinality" = "OneSafe" ] || [ "CTLCardinality" = "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 [ "CTLCardinality" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "CTLCardinality" != "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 "CTLCardinality.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property CTLCardinality.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "CTLCardinality.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 '' CTLCardinality.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "CTLCardinality" = "ReachabilityDeadlock" ] || [ "CTLCardinality" = "QuasiLiveness" ] || [ "CTLCardinality" = "StableMarking" ] || [ "CTLCardinality" = "Liveness" ] || [ "CTLCardinality" = "OneSafe" ] ; then
echo "FORMULA_NAME CTLCardinality"
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 ;