Execution Chart

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

Trace from the execution

Waiting for the VM to be ready (probing ssh)
.................
=====================================================================
Generated by BenchKit 2-2265
Executing tool classicSEQ
Input is S_CSRepetitions-PT-04, examination is ReachabilityFireabilitySimple
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 1
Run identifier is r114st-ebro-143297399400221
=====================================================================

--------------------
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 CSRepetitions-COL-04-ReachabilityFireabilitySimple-0
FORMULA_NAME CSRepetitions-COL-04-ReachabilityFireabilitySimple-1
FORMULA_NAME CSRepetitions-COL-04-ReachabilityFireabilitySimple-10
FORMULA_NAME CSRepetitions-COL-04-ReachabilityFireabilitySimple-11
FORMULA_NAME CSRepetitions-COL-04-ReachabilityFireabilitySimple-12
FORMULA_NAME CSRepetitions-COL-04-ReachabilityFireabilitySimple-13
FORMULA_NAME CSRepetitions-COL-04-ReachabilityFireabilitySimple-14
FORMULA_NAME CSRepetitions-COL-04-ReachabilityFireabilitySimple-15
FORMULA_NAME CSRepetitions-COL-04-ReachabilityFireabilitySimple-2
FORMULA_NAME CSRepetitions-COL-04-ReachabilityFireabilitySimple-3
FORMULA_NAME CSRepetitions-COL-04-ReachabilityFireabilitySimple-4
FORMULA_NAME CSRepetitions-COL-04-ReachabilityFireabilitySimple-5
FORMULA_NAME CSRepetitions-COL-04-ReachabilityFireabilitySimple-6
FORMULA_NAME CSRepetitions-COL-04-ReachabilityFireabilitySimple-7
FORMULA_NAME CSRepetitions-COL-04-ReachabilityFireabilitySimple-8
FORMULA_NAME CSRepetitions-COL-04-ReachabilityFireabilitySimple-9

=== Now, execution of the tool begins

BK_START 1433086406851

---> classicSEQ --- TAPAAL Classic Sequential

****************************************************
TAPAAL classicSEQ verifying ReachabilityFireabilitySimple
****************************************************

verifypn -n -r 1 -x 1 model.pnml ReachabilityFireabilitySimple.xml
CSRepetitions-COL-04-ReachabilityFireabilitySimple-0: not EF not ( ((true and "Client_Waiting_5" >= 1) or (true and "Client_Waiting_15" >= 1) or (true and "Client_Waiting_6" >= 1) or (true and "Client_Waiting_2" >= 1) or (true and "Client_Waiting_9" >= 1) or (true and "Client_Waiting_3" >= 1) or (true and "Client_Waiting_16" >= 1) or (true and "Client_Waiting_8" >= 1) or (true and "Client_Waiting_11" >= 1) or (true and "Client_Waiting_10" >= 1) or (true and "Client_Waiting_1" >= 1) or (true and "Client_Waiting_12" >= 1) or (true and "Client_Waiting_13" >= 1) or (true and "Client_Waiting_7" >= 1) or (true and "Client_Waiting_14" >= 1) or (true and "Client_Waiting_4" >= 1)) )

FORMULA CSRepetitions-COL-04-ReachabilityFireabilitySimple-0 FALSE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION

Query is NOT satisfied.


verifypn -n -r 1 -x 2 model.pnml ReachabilityFireabilitySimple.xml
CSRepetitions-COL-04-ReachabilityFireabilitySimple-1: not EF not ( ((true and "Client_Waiting_5" >= 1) or (true and "Client_Waiting_15" >= 1) or (true and "Client_Waiting_6" >= 1) or (true and "Client_Waiting_2" >= 1) or (true and "Client_Waiting_9" >= 1) or (true and "Client_Waiting_3" >= 1) or (true and "Client_Waiting_16" >= 1) or (true and "Client_Waiting_8" >= 1) or (true and "Client_Waiting_11" >= 1) or (true and "Client_Waiting_10" >= 1) or (true and "Client_Waiting_1" >= 1) or (true and "Client_Waiting_12" >= 1) or (true and "Client_Waiting_13" >= 1) or (true and "Client_Waiting_7" >= 1) or (true and "Client_Waiting_14" >= 1) or (true and "Client_Waiting_4" >= 1)) )

FORMULA CSRepetitions-COL-04-ReachabilityFireabilitySimple-1 FALSE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION

Query is NOT satisfied.


verifypn -n -r 1 -x 3 model.pnml ReachabilityFireabilitySimple.xml
CSRepetitions-COL-04-ReachabilityFireabilitySimple-2: not EF not ( ((true and "Client_Waiting_5" >= 1) or (true and "Client_Waiting_15" >= 1) or (true and "Client_Waiting_6" >= 1) or (true and "Client_Waiting_2" >= 1) or (true and "Client_Waiting_9" >= 1) or (true and "Client_Waiting_3" >= 1) or (true and "Client_Waiting_16" >= 1) or (true and "Client_Waiting_8" >= 1) or (true and "Client_Waiting_11" >= 1) or (true and "Client_Waiting_10" >= 1) or (true and "Client_Waiting_1" >= 1) or (true and "Client_Waiting_12" >= 1) or (true and "Client_Waiting_13" >= 1) or (true and "Client_Waiting_7" >= 1) or (true and "Client_Waiting_14" >= 1) or (true and "Client_Waiting_4" >= 1)) )

FORMULA CSRepetitions-COL-04-ReachabilityFireabilitySimple-2 FALSE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION

Query is NOT satisfied.


verifypn -n -r 1 -x 4 model.pnml ReachabilityFireabilitySimple.xml
CSRepetitions-COL-04-ReachabilityFireabilitySimple-3: not EF not ( ((true and "Client_Waiting_5" >= 1) or (true and "Client_Waiting_15" >= 1) or (true and "Client_Waiting_6" >= 1) or (true and "Client_Waiting_2" >= 1) or (true and "Client_Waiting_9" >= 1) or (true and "Client_Waiting_3" >= 1) or (true and "Client_Waiting_16" >= 1) or (true and "Client_Waiting_8" >= 1) or (true and "Client_Waiting_11" >= 1) or (true and "Client_Waiting_10" >= 1) or (true and "Client_Waiting_1" >= 1) or (true and "Client_Waiting_12" >= 1) or (true and "Client_Waiting_13" >= 1) or (true and "Client_Waiting_7" >= 1) or (true and "Client_Waiting_14" >= 1) or (true and "Client_Waiting_4" >= 1)) )

FORMULA CSRepetitions-COL-04-ReachabilityFireabilitySimple-3 FALSE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION

Query is NOT satisfied.


verifypn -n -r 1 -x 5 model.pnml ReachabilityFireabilitySimple.xml
CSRepetitions-COL-04-ReachabilityFireabilitySimple-4: not EF not ( ((true and "Client_Waiting_5" >= 1) or (true and "Client_Waiting_15" >= 1) or (true and "Client_Waiting_6" >= 1) or (true and "Client_Waiting_2" >= 1) or (true and "Client_Waiting_9" >= 1) or (true and "Client_Waiting_3" >= 1) or (true and "Client_Waiting_16" >= 1) or (true and "Client_Waiting_8" >= 1) or (true and "Client_Waiting_11" >= 1) or (true and "Client_Waiting_10" >= 1) or (true and "Client_Waiting_1" >= 1) or (true and "Client_Waiting_12" >= 1) or (true and "Client_Waiting_13" >= 1) or (true and "Client_Waiting_7" >= 1) or (true and "Client_Waiting_14" >= 1) or (true and "Client_Waiting_4" >= 1)) )

FORMULA CSRepetitions-COL-04-ReachabilityFireabilitySimple-4 FALSE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION

Query is NOT satisfied.


verifypn -n -r 1 -x 6 model.pnml ReachabilityFireabilitySimple.xml
CSRepetitions-COL-04-ReachabilityFireabilitySimple-5: not EF not ( ((true and "Client_Waiting_5" >= 1) or (true and "Client_Waiting_15" >= 1) or (true and "Client_Waiting_6" >= 1) or (true and "Client_Waiting_2" >= 1) or (true and "Client_Waiting_9" >= 1) or (true and "Client_Waiting_3" >= 1) or (true and "Client_Waiting_16" >= 1) or (true and "Client_Waiting_8" >= 1) or (true and "Client_Waiting_11" >= 1) or (true and "Client_Waiting_10" >= 1) or (true and "Client_Waiting_1" >= 1) or (true and "Client_Waiting_12" >= 1) or (true and "Client_Waiting_13" >= 1) or (true and "Client_Waiting_7" >= 1) or (true and "Client_Waiting_14" >= 1) or (true and "Client_Waiting_4" >= 1)) )

FORMULA CSRepetitions-COL-04-ReachabilityFireabilitySimple-5 FALSE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION

Query is NOT satisfied.


verifypn -n -r 1 -x 7 model.pnml ReachabilityFireabilitySimple.xml
CSRepetitions-COL-04-ReachabilityFireabilitySimple-6: not EF not ( ((true and "Client_Waiting_5" >= 1) or (true and "Client_Waiting_15" >= 1) or (true and "Client_Waiting_6" >= 1) or (true and "Client_Waiting_2" >= 1) or (true and "Client_Waiting_9" >= 1) or (true and "Client_Waiting_3" >= 1) or (true and "Client_Waiting_16" >= 1) or (true and "Client_Waiting_8" >= 1) or (true and "Client_Waiting_11" >= 1) or (true and "Client_Waiting_10" >= 1) or (true and "Client_Waiting_1" >= 1) or (true and "Client_Waiting_12" >= 1) or (true and "Client_Waiting_13" >= 1) or (true and "Client_Waiting_7" >= 1) or (true and "Client_Waiting_14" >= 1) or (true and "Client_Waiting_4" >= 1)) )

FORMULA CSRepetitions-COL-04-ReachabilityFireabilitySimple-6 FALSE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION

Query is NOT satisfied.


verifypn -n -r 1 -x 8 model.pnml ReachabilityFireabilitySimple.xml
CSRepetitions-COL-04-ReachabilityFireabilitySimple-7: not EF not ( ((true and "Client_Waiting_5" >= 1) or (true and "Client_Waiting_15" >= 1) or (true and "Client_Waiting_6" >= 1) or (true and "Client_Waiting_2" >= 1) or (true and "Client_Waiting_9" >= 1) or (true and "Client_Waiting_3" >= 1) or (true and "Client_Waiting_16" >= 1) or (true and "Client_Waiting_8" >= 1) or (true and "Client_Waiting_11" >= 1) or (true and "Client_Waiting_10" >= 1) or (true and "Client_Waiting_1" >= 1) or (true and "Client_Waiting_12" >= 1) or (true and "Client_Waiting_13" >= 1) or (true and "Client_Waiting_7" >= 1) or (true and "Client_Waiting_14" >= 1) or (true and "Client_Waiting_4" >= 1)) )

FORMULA CSRepetitions-COL-04-ReachabilityFireabilitySimple-7 FALSE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION

Query is NOT satisfied.


verifypn -n -r 1 -x 9 model.pnml ReachabilityFireabilitySimple.xml
CSRepetitions-COL-04-ReachabilityFireabilitySimple-8: not EF not ( ((true and "Client_Waiting_5" >= 1) or (true and "Client_Waiting_15" >= 1) or (true and "Client_Waiting_6" >= 1) or (true and "Client_Waiting_2" >= 1) or (true and "Client_Waiting_9" >= 1) or (true and "Client_Waiting_3" >= 1) or (true and "Client_Waiting_16" >= 1) or (true and "Client_Waiting_8" >= 1) or (true and "Client_Waiting_11" >= 1) or (true and "Client_Waiting_10" >= 1) or (true and "Client_Waiting_1" >= 1) or (true and "Client_Waiting_12" >= 1) or (true and "Client_Waiting_13" >= 1) or (true and "Client_Waiting_7" >= 1) or (true and "Client_Waiting_14" >= 1) or (true and "Client_Waiting_4" >= 1)) )

FORMULA CSRepetitions-COL-04-ReachabilityFireabilitySimple-8 FALSE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION

Query is NOT satisfied.


verifypn -n -r 1 -x 10 model.pnml ReachabilityFireabilitySimple.xml
CSRepetitions-COL-04-ReachabilityFireabilitySimple-9: not EF not ( ((true and "Client_Waiting_5" >= 1) or (true and "Client_Waiting_15" >= 1) or (true and "Client_Waiting_6" >= 1) or (true and "Client_Waiting_2" >= 1) or (true and "Client_Waiting_9" >= 1) or (true and "Client_Waiting_3" >= 1) or (true and "Client_Waiting_16" >= 1) or (true and "Client_Waiting_8" >= 1) or (true and "Client_Waiting_11" >= 1) or (true and "Client_Waiting_10" >= 1) or (true and "Client_Waiting_1" >= 1) or (true and "Client_Waiting_12" >= 1) or (true and "Client_Waiting_13" >= 1) or (true and "Client_Waiting_7" >= 1) or (true and "Client_Waiting_14" >= 1) or (true and "Client_Waiting_4" >= 1)) )

FORMULA CSRepetitions-COL-04-ReachabilityFireabilitySimple-9 FALSE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION

Query is NOT satisfied.


verifypn -n -r 1 -x 11 model.pnml ReachabilityFireabilitySimple.xml
CSRepetitions-COL-04-ReachabilityFireabilitySimple-10: not EF not ( ((true and "Client_Waiting_5" >= 1) or (true and "Client_Waiting_15" >= 1) or (true and "Client_Waiting_6" >= 1) or (true and "Client_Waiting_2" >= 1) or (true and "Client_Waiting_9" >= 1) or (true and "Client_Waiting_3" >= 1) or (true and "Client_Waiting_16" >= 1) or (true and "Client_Waiting_8" >= 1) or (true and "Client_Waiting_11" >= 1) or (true and "Client_Waiting_10" >= 1) or (true and "Client_Waiting_1" >= 1) or (true and "Client_Waiting_12" >= 1) or (true and "Client_Waiting_13" >= 1) or (true and "Client_Waiting_7" >= 1) or (true and "Client_Waiting_14" >= 1) or (true and "Client_Waiting_4" >= 1)) )

FORMULA CSRepetitions-COL-04-ReachabilityFireabilitySimple-10 FALSE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION

Query is NOT satisfied.


verifypn -n -r 1 -x 12 model.pnml ReachabilityFireabilitySimple.xml
CSRepetitions-COL-04-ReachabilityFireabilitySimple-11: not EF not ( ((true and "Client_Waiting_5" >= 1) or (true and "Client_Waiting_15" >= 1) or (true and "Client_Waiting_6" >= 1) or (true and "Client_Waiting_2" >= 1) or (true and "Client_Waiting_9" >= 1) or (true and "Client_Waiting_3" >= 1) or (true and "Client_Waiting_16" >= 1) or (true and "Client_Waiting_8" >= 1) or (true and "Client_Waiting_11" >= 1) or (true and "Client_Waiting_10" >= 1) or (true and "Client_Waiting_1" >= 1) or (true and "Client_Waiting_12" >= 1) or (true and "Client_Waiting_13" >= 1) or (true and "Client_Waiting_7" >= 1) or (true and "Client_Waiting_14" >= 1) or (true and "Client_Waiting_4" >= 1)) )

FORMULA CSRepetitions-COL-04-ReachabilityFireabilitySimple-11 FALSE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION

Query is NOT satisfied.


verifypn -n -r 1 -x 13 model.pnml ReachabilityFireabilitySimple.xml
CSRepetitions-COL-04-ReachabilityFireabilitySimple-12: not EF not ( ((true and "Client_Waiting_5" >= 1) or (true and "Client_Waiting_15" >= 1) or (true and "Client_Waiting_6" >= 1) or (true and "Client_Waiting_2" >= 1) or (true and "Client_Waiting_9" >= 1) or (true and "Client_Waiting_3" >= 1) or (true and "Client_Waiting_16" >= 1) or (true and "Client_Waiting_8" >= 1) or (true and "Client_Waiting_11" >= 1) or (true and "Client_Waiting_10" >= 1) or (true and "Client_Waiting_1" >= 1) or (true and "Client_Waiting_12" >= 1) or (true and "Client_Waiting_13" >= 1) or (true and "Client_Waiting_7" >= 1) or (true and "Client_Waiting_14" >= 1) or (true and "Client_Waiting_4" >= 1)) )

FORMULA CSRepetitions-COL-04-ReachabilityFireabilitySimple-12 FALSE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION

Query is NOT satisfied.


verifypn -n -r 1 -x 14 model.pnml ReachabilityFireabilitySimple.xml
CSRepetitions-COL-04-ReachabilityFireabilitySimple-13: not EF not ( ((true and "Client_Waiting_5" >= 1) or (true and "Client_Waiting_15" >= 1) or (true and "Client_Waiting_6" >= 1) or (true and "Client_Waiting_2" >= 1) or (true and "Client_Waiting_9" >= 1) or (true and "Client_Waiting_3" >= 1) or (true and "Client_Waiting_16" >= 1) or (true and "Client_Waiting_8" >= 1) or (true and "Client_Waiting_11" >= 1) or (true and "Client_Waiting_10" >= 1) or (true and "Client_Waiting_1" >= 1) or (true and "Client_Waiting_12" >= 1) or (true and "Client_Waiting_13" >= 1) or (true and "Client_Waiting_7" >= 1) or (true and "Client_Waiting_14" >= 1) or (true and "Client_Waiting_4" >= 1)) )

FORMULA CSRepetitions-COL-04-ReachabilityFireabilitySimple-13 FALSE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION

Query is NOT satisfied.


verifypn -n -r 1 -x 15 model.pnml ReachabilityFireabilitySimple.xml
CSRepetitions-COL-04-ReachabilityFireabilitySimple-14: not EF not ( ((true and "Client_Waiting_5" >= 1) or (true and "Client_Waiting_15" >= 1) or (true and "Client_Waiting_6" >= 1) or (true and "Client_Waiting_2" >= 1) or (true and "Client_Waiting_9" >= 1) or (true and "Client_Waiting_3" >= 1) or (true and "Client_Waiting_16" >= 1) or (true and "Client_Waiting_8" >= 1) or (true and "Client_Waiting_11" >= 1) or (true and "Client_Waiting_10" >= 1) or (true and "Client_Waiting_1" >= 1) or (true and "Client_Waiting_12" >= 1) or (true and "Client_Waiting_13" >= 1) or (true and "Client_Waiting_7" >= 1) or (true and "Client_Waiting_14" >= 1) or (true and "Client_Waiting_4" >= 1)) )

FORMULA CSRepetitions-COL-04-ReachabilityFireabilitySimple-14 FALSE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION

Query is NOT satisfied.


verifypn -n -r 1 -x 16 model.pnml ReachabilityFireabilitySimple.xml
CSRepetitions-COL-04-ReachabilityFireabilitySimple-15: not EF not ( ((true and "Client_Waiting_5" >= 1) or (true and "Client_Waiting_15" >= 1) or (true and "Client_Waiting_6" >= 1) or (true and "Client_Waiting_2" >= 1) or (true and "Client_Waiting_9" >= 1) or (true and "Client_Waiting_3" >= 1) or (true and "Client_Waiting_16" >= 1) or (true and "Client_Waiting_8" >= 1) or (true and "Client_Waiting_11" >= 1) or (true and "Client_Waiting_10" >= 1) or (true and "Client_Waiting_1" >= 1) or (true and "Client_Waiting_12" >= 1) or (true and "Client_Waiting_13" >= 1) or (true and "Client_Waiting_7" >= 1) or (true and "Client_Waiting_14" >= 1) or (true and "Client_Waiting_4" >= 1)) )

FORMULA CSRepetitions-COL-04-ReachabilityFireabilitySimple-15 FALSE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION

Query is NOT satisfied.


BK_STOP 1433086408461

--------------------
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="S_CSRepetitions-PT-04"
export BK_EXAMINATION="ReachabilityFireabilitySimple"
export BK_TOOL="classicSEQ"
export BK_RESULT_DIR="/users/gast00/fkordon/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"

# 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

tar xzf /home/mcc/BenchKit/INPUTS/S_CSRepetitions-PT-04.tgz
mv S_CSRepetitions-PT-04 execution

# this is for BenchKit: explicit launching of the test

cd execution
echo "====================================================================="
echo " Generated by BenchKit 2-2265"
echo " Executing tool classicSEQ"
echo " Input is S_CSRepetitions-PT-04, examination is ReachabilityFireabilitySimple"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 1"
echo " Run identifier is r114st-ebro-143297399400221"
echo "====================================================================="
echo
echo "--------------------"
echo "content from stdout:"
echo
echo "=== Data for post analysis generated by BenchKit (invocation template)"
echo
if [ "ReachabilityFireabilitySimple" = "ReachabilityComputeBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "ReachabilityFireabilitySimple" != "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 "ReachabilityFireabilitySimple.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property ReachabilityFireabilitySimple.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "ReachabilityFireabilitySimple.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 '' ReachabilityFireabilitySimple.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
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 ;