Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2021-input.r118-tall-162075402600147.qcow2', fmt=qcow2 size=4294967296 backing_file='/data/fkordon/mcc2021-input.qcow2' encryption=off cluster_size=65536 lazy_refcounts=off
Waiting for the VM to be ready (probing ssh)
..................
=====================================================================
Generated by BenchKit 2-4028
Executing tool lola
Input is HouseConstruction-PT-00005, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r118-tall-162075402600147
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 376K
-rw-r--r-- 1 mcc users 12K May 5 16:58 CTLCardinality.txt
-rw-r--r-- 1 mcc users 122K May 10 09:43 CTLCardinality.xml
-rw-r--r-- 1 mcc users 8.5K May 5 16:58 CTLFireability.txt
-rw-r--r-- 1 mcc users 82K May 10 09:43 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 6 14:48 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 3.4K Mar 28 16:15 LTLCardinality.txt
-rw-r--r-- 1 mcc users 25K Mar 28 16:15 LTLCardinality.xml
-rw-r--r-- 1 mcc users 1.9K Mar 28 16:15 LTLFireability.txt
-rw-r--r-- 1 mcc users 14K Mar 28 16:15 LTLFireability.xml
-rw-r--r-- 1 mcc users 3.8K Mar 23 11:29 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 20K Mar 23 11:29 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 3.0K Mar 22 21:02 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 20K Mar 22 21:02 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Mar 22 09:15 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Mar 22 09:15 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 5 16:51 equiv_col
-rw-r--r-- 1 mcc users 6 May 5 16:51 instance
-rw-r--r-- 1 mcc users 6 May 5 16:51 iscolored
-rw-r--r-- 1 mcc users 13K May 5 16:51 model.pnml

--------------------
content from stdout:

=== Data for post analysis generated by BenchKit (invocation template)

The expected result is a vector of positive values
NUM_VECTOR

here is the order used to build the result vector(from text file)
FORMULA_NAME HouseConstruction-PT-00005-UpperBounds-00
FORMULA_NAME HouseConstruction-PT-00005-UpperBounds-01
FORMULA_NAME HouseConstruction-PT-00005-UpperBounds-02
FORMULA_NAME HouseConstruction-PT-00005-UpperBounds-03
FORMULA_NAME HouseConstruction-PT-00005-UpperBounds-04
FORMULA_NAME HouseConstruction-PT-00005-UpperBounds-05
FORMULA_NAME HouseConstruction-PT-00005-UpperBounds-06
FORMULA_NAME HouseConstruction-PT-00005-UpperBounds-07
FORMULA_NAME HouseConstruction-PT-00005-UpperBounds-08
FORMULA_NAME HouseConstruction-PT-00005-UpperBounds-09
FORMULA_NAME HouseConstruction-PT-00005-UpperBounds-10
FORMULA_NAME HouseConstruction-PT-00005-UpperBounds-11
FORMULA_NAME HouseConstruction-PT-00005-UpperBounds-12
FORMULA_NAME HouseConstruction-PT-00005-UpperBounds-13
FORMULA_NAME HouseConstruction-PT-00005-UpperBounds-14
FORMULA_NAME HouseConstruction-PT-00005-UpperBounds-15

=== Now, execution of the tool begins

BK_START 1620781570625

starting LoLA
BK_INPUT HouseConstruction-PT-00005
BK_EXAMINATION: UpperBounds
bin directory: /home/mcc/BenchKit/bin
current directory: /home/mcc/execution
Upper Bounds

FORMULA HouseConstruction-PT-00005-UpperBounds-07 5 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HouseConstruction-PT-00005-UpperBounds-00 5 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HouseConstruction-PT-00005-UpperBounds-02 5 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HouseConstruction-PT-00005-UpperBounds-03 5 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HouseConstruction-PT-00005-UpperBounds-11 5 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HouseConstruction-PT-00005-UpperBounds-09 5 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HouseConstruction-PT-00005-UpperBounds-15 5 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HouseConstruction-PT-00005-UpperBounds-01 5 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HouseConstruction-PT-00005-UpperBounds-10 5 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HouseConstruction-PT-00005-UpperBounds-05 5 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HouseConstruction-PT-00005-UpperBounds-14 5 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HouseConstruction-PT-00005-UpperBounds-12 5 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HouseConstruction-PT-00005-UpperBounds-08 5 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HouseConstruction-PT-00005-UpperBounds-06 5 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HouseConstruction-PT-00005-UpperBounds-13 5 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HouseConstruction-PT-00005-UpperBounds-04 5 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

BK_STOP 1620781570792

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

lola: MEM LIMIT 32
lola: MEM LIMIT 5
lola: NET
lola: input: PNML file (--pnmlnet)
lola: reading net from /home/mcc/execution/model.pnml
lola: reading pnml
lola: PNML file contains place/transition net
lola: finished parsing
lola: closed net file /home/mcc/execution/model.pnml
lola: Reading formula.
lola: Using XML format (--xmlformula)
lola: reading XML formula
lola: reading formula from /home/mcc/execution/UpperBounds.xml
lola: Rule S: 0 transitions removed,0 places removed
lola: LAUNCH task # 56 (type EXCL) for 21 HouseConstruction-PT-00005-UpperBounds-07
lola: time limit : 128 sec
lola: memory limit: 32 pages
lola: LAUNCH task # 48 (type FNDP) for 6 HouseConstruction-PT-00005-UpperBounds-02
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: LAUNCH task # 49 (type FNDP) for 0 HouseConstruction-PT-00005-UpperBounds-00
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: LAUNCH task # 50 (type EQUN) for 0 HouseConstruction-PT-00005-UpperBounds-00
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: REPORT NUM
lola: REPORT NUM
lola: Structural Bound: 5
lola: REPORT NUM
lola: FINISHED task # 56 (type EXCL) for HouseConstruction-PT-00005-UpperBounds-07
lola: markings : 6
lola: fired transitions : 5
lola: time used : 0.000000
lola: memory pages used : 1
lola: LAUNCH task # 68 (type EXCL) for 9 HouseConstruction-PT-00005-UpperBounds-03
lola: time limit : 138 sec
lola: memory limit: 32 pages
lola: FINISHED task # 49 (type FNDP) for HouseConstruction-PT-00005-UpperBounds-00
lola: fired transitions : 4
lola: tried executions : 1
lola: time used : 0.000000
lola: Structural Bound: 5
lola: FINISHED task # 48 (type FNDP) for HouseConstruction-PT-00005-UpperBounds-02
lola: fired transitions : 4
lola: tried executions : 1
lola: time used : 0.000000
lola: REPORT NUM
lola: FINISHED task # 68 (type EXCL) for HouseConstruction-PT-00005-UpperBounds-03
lola: markings : 6
lola: fired transitions : 5
lola: time used : 0.000000
lola: memory pages used : 1
lola: CANCELED task # 50 (type EQUN) for HouseConstruction-PT-00005-UpperBounds-00 (obsolete)
lola: LAUNCH task # 71 (type EXCL) for 33 HouseConstruction-PT-00005-UpperBounds-11
lola: time limit : 156 sec
lola: memory limit: 32 pages
lola: LAUNCH task # 57 (type FNDP) for 3 HouseConstruction-PT-00005-UpperBounds-01
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: LAUNCH task # 58 (type EQUN) for 3 HouseConstruction-PT-00005-UpperBounds-01
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: LAUNCH task # 60 (type FNDP) for 15 HouseConstruction-PT-00005-UpperBounds-05
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: Structural Bound: 5
lola: REPORT NUM
lola: FINISHED task # 71 (type EXCL) for HouseConstruction-PT-00005-UpperBounds-11
lola: markings : 6
lola: fired transitions : 5
lola: time used : 0.000000
lola: memory pages used : 1
lola: LAUNCH task # 83 (type EXCL) for 27 HouseConstruction-PT-00005-UpperBounds-09
lola: time limit : 171 sec
lola: memory limit: 32 pages
lola: Structural Bound: 5
sara: try reading problem file /home/mcc/execution/UpperBounds-50.sara.
lola: REPORT NUM
lola: FINISHED task # 83 (type EXCL) for HouseConstruction-PT-00005-UpperBounds-09
lola: markings : 6
lola: fired transitions : 5
lola: time used : 0.000000
lola: memory pages used : 1
lola: LAUNCH task # 89 (type EXCL) for 45 HouseConstruction-PT-00005-UpperBounds-15
lola: time limit : 189 sec
lola: memory limit: 32 pages
lola: Structural Bound: 5
lola: REPORT NUM

lola: REPORT NUM
lola: FINISHED task # 89 (type EXCL) for HouseConstruction-PT-00005-UpperBounds-15
lola: markings : 6
lola: fired transitions : 5
lola: time used : 0.000000
lola: memory pages used : 1
sara: try reading problem file /home/mcc/execution/UpperBounds-58.sara.

lola: LAUNCH task # 92 (type EXCL) for 30 HouseConstruction-PT-00005-UpperBounds-10
lola: time limit : 211 sec
lola: memory limit: 32 pages
lola: FINISHED task # 57 (type FNDP) for HouseConstruction-PT-00005-UpperBounds-01
lola: fired transitions : 4
lola: tried executions : 1
lola: time used : 0.000000
lola: CANCELED task # 58 (type EQUN) for HouseConstruction-PT-00005-UpperBounds-01 (obsolete)
lola: REPORT NUM
lola: LAUNCH task # 73 (type FNDP) for 36 HouseConstruction-PT-00005-UpperBounds-12
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: LAUNCH task # 79 (type EQUN) for 36 HouseConstruction-PT-00005-UpperBounds-12
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: Structural Bound: 5
lola: REPORT NUM
lola: FINISHED task # 92 (type EXCL) for HouseConstruction-PT-00005-UpperBounds-10
lola: markings : 6
lola: fired transitions : 5
lola: time used : 0.000000
lola: memory pages used : 1
lola: LAUNCH task # 95 (type EXCL) for 42 HouseConstruction-PT-00005-UpperBounds-14
lola: time limit : 257 sec
lola: memory limit: 32 pages
lola: REPORT NUM
lola: FINISHED task # 50 (type EQUN) for HouseConstruction-PT-00005-UpperBounds-00
lola: time used : 0.000000
lola: FINISHED task # 60 (type FNDP) for HouseConstruction-PT-00005-UpperBounds-05
lola: fired transitions : 4
lola: tried executions : 1
lola: time used : 0.000000
lola: LAUNCH task # 63 (type FNDP) for 12 HouseConstruction-PT-00005-UpperBounds-04
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: Structural Bound: 5
lola: REPORT NUM
lola: FINISHED task # 95 (type EXCL) for HouseConstruction-PT-00005-UpperBounds-14
lola: markings : 6
lola: fired transitions : 5
lola: time used : 0.000000
lola: memory pages used : 1
lola: REPORT NUM
lola: LAUNCH task # 86 (type EXCL) for 24 HouseConstruction-PT-00005-UpperBounds-08
lola: time limit : 360 sec
lola: memory limit: 32 pages
lola: FINISHED task # 73 (type FNDP) for HouseConstruction-PT-00005-UpperBounds-12
lola: tried executions : 1
lola: time used : 0.000000
lola: CANCELED task # 79 (type EQUN) for HouseConstruction-PT-00005-UpperBounds-12 (obsolete)
lola: LAUNCH task # 72 (type FNDP) for 39 HouseConstruction-PT-00005-UpperBounds-13
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: Structural Bound: 5
lola: LAUNCH task # 74 (type EQUN) for 39 HouseConstruction-PT-00005-UpperBounds-13
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: REPORT NUM
lola: FINISHED task # 58 (type EQUN) for HouseConstruction-PT-00005-UpperBounds-01
lola: time used : 0.000000
lola: REPORT NUM
lola: FINISHED task # 86 (type EXCL) for HouseConstruction-PT-00005-UpperBounds-08
lola: markings : 6
lola: fired transitions : 5
lola: time used : 0.000000
lola: memory pages used : 1
lola: LAUNCH task # 78 (type EXCL) for 18 HouseConstruction-PT-00005-UpperBounds-06
lola: time limit : 600 sec
lola: memory limit: 32 pages
sara: try reading problem file /home/mcc/execution/UpperBounds-79.sara.
lola: Structural Bound: 5
lola: REPORT NUM
lola: FINISHED task # 78 (type EXCL) for HouseConstruction-PT-00005-UpperBounds-06
lola: markings : 6
lola: fired transitions : 5
lola: time used : 0.000000
lola: memory pages used : 1
lola: LAUNCH task # 75 (type EXCL) for 39 HouseConstruction-PT-00005-UpperBounds-13
lola: time limit : 900 sec
lola: memory limit: 32 pages
lola: Structural Bound: 5
lola: REPORT NUM
lola: FINISHED task # 75 (type EXCL) for HouseConstruction-PT-00005-UpperBounds-13
lola: markings : 6
lola: fired transitions : 5
lola: time used : 0.000000
lola: memory pages used : 1
lola: CANCELED task # 72 (type FNDP) for HouseConstruction-PT-00005-UpperBounds-13 (obsolete)
lola: CANCELED task # 74 (type EQUN) for HouseConstruction-PT-00005-UpperBounds-13 (obsolete)
sara: error: :5: error: syntax error, unexpected $end, expecting KEY_TRANSITION
sara: error while reading Petri net from file -- aborting [#04]
sara: see manual for a documentation of this error
sara: last error message: No such file or directory
lola: REPORT NUM
lola: LAUNCH task # 65 (type EXCL) for 12 HouseConstruction-PT-00005-UpperBounds-04
lola: time limit : 1800 sec
lola: memory limit: 32 pages
lola: REPORT NUM
lola: LAUNCH task # 64 (type EQUN) for 12 HouseConstruction-PT-00005-UpperBounds-04
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: FINISHED task # 63 (type FNDP) for HouseConstruction-PT-00005-UpperBounds-04
lola: fired transitions : 4
lola: tried executions : 1
lola: time used : 0.000000
lola: FINISHED task # 72 (type FNDP) for HouseConstruction-PT-00005-UpperBounds-13
lola: fired transitions : 4
lola: tried executions : 1
lola: time used : 0.000000
lola: Structural Bound: 5
lola: REPORT NUM
lola: FINISHED task # 65 (type EXCL) for HouseConstruction-PT-00005-UpperBounds-04
lola: markings : 6
lola: fired transitions : 5
lola: time used : 0.000000
lola: memory pages used : 1
lola: CANCELED task # 64 (type EQUN) for HouseConstruction-PT-00005-UpperBounds-04 (obsolete)
lola: Portfolio finished: no open formulas

FINAL RESULTS
FINISHED FORMULA: CATEGORY VALUE PRODUCED BY
HouseConstruction-PT-00005-UpperBounds-00: BOUND 5 findpath
HouseConstruction-PT-00005-UpperBounds-01: BOUND 5 findpath
HouseConstruction-PT-00005-UpperBounds-02: BOUND 5 findpath
HouseConstruction-PT-00005-UpperBounds-03: BOUND 5 state space
HouseConstruction-PT-00005-UpperBounds-04: BOUND 5 findpath
HouseConstruction-PT-00005-UpperBounds-05: BOUND 5 findpath
HouseConstruction-PT-00005-UpperBounds-06: BOUND 5 state space
HouseConstruction-PT-00005-UpperBounds-07: BOUND 5 state space
HouseConstruction-PT-00005-UpperBounds-08: BOUND 5 state space
HouseConstruction-PT-00005-UpperBounds-09: BOUND 5 state space
HouseConstruction-PT-00005-UpperBounds-10: BOUND 5 state space
HouseConstruction-PT-00005-UpperBounds-11: BOUND 5 state space
HouseConstruction-PT-00005-UpperBounds-12: BOUND 5 findpath
HouseConstruction-PT-00005-UpperBounds-13: BOUND 5 state space
HouseConstruction-PT-00005-UpperBounds-14: BOUND 5 state space
HouseConstruction-PT-00005-UpperBounds-15: BOUND 5 state space


Time elapsed: 0 secs. Pages in use: 1

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="HouseConstruction-PT-00005"
export BK_EXAMINATION="UpperBounds"
export BK_TOOL="lola"
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 lola"
echo " Input is HouseConstruction-PT-00005, examination is UpperBounds"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r118-tall-162075402600147"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/HouseConstruction-PT-00005.tgz
mv HouseConstruction-PT-00005 execution
cd execution
if [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "UpperBounds" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] || [ "UpperBounds" = "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 [ "UpperBounds" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "UpperBounds" != "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 "UpperBounds.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property UpperBounds.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "UpperBounds.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 '' UpperBounds.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] ; then
echo "FORMULA_NAME UpperBounds"
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 ;