About the Execution of M4M.full for DNAwalker-PT-09ringLR
Execution Summary | |||||
Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
1422.720 | 227283.00 | 447111.00 | 1224.50 | ???????????????? | normal |
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)
....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
/home/mcc/execution
total 276K
-rw-r--r-- 1 mcc users 3.0K May 15 18:54 CTLCardinality.txt
-rw-r--r-- 1 mcc users 16K May 15 18:54 CTLCardinality.xml
-rw-r--r-- 1 mcc users 2.5K May 15 18:54 CTLFireability.txt
-rw-r--r-- 1 mcc users 16K May 15 18:54 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K May 15 18:50 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 5.6K May 15 18:50 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 2.4K May 15 18:54 LTLCardinality.txt
-rw-r--r-- 1 mcc users 9.9K May 15 18:54 LTLCardinality.xml
-rw-r--r-- 1 mcc users 1.9K May 15 18:54 LTLFireability.txt
-rw-r--r-- 1 mcc users 8.3K May 15 18:54 LTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K May 15 18:54 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 22K May 15 18:54 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 112 May 15 18:54 ReachabilityDeadlock.txt
-rw-r--r-- 1 mcc users 350 May 15 18:54 ReachabilityDeadlock.xml
-rw-r--r-- 1 mcc users 2.9K May 15 18:54 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 17K May 15 18:54 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K May 15 18:54 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K May 15 18:54 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 15 18:50 equiv_col
-rw-r--r-- 1 mcc users 9 May 15 18:50 instance
-rw-r--r-- 1 mcc users 6 May 15 18:50 iscolored
-rw-r--r-- 1 mcc users 112K May 15 18:50 model.pnml
=====================================================================
Generated by BenchKit 2-3637
Executing tool mcc4mcc-full
Input is DNAwalker-PT-09ringLR, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r070-smll-152649743100287
=====================================================================
--------------------
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 DNAwalker-PT-09ringLR-ReachabilityFireability-00
FORMULA_NAME DNAwalker-PT-09ringLR-ReachabilityFireability-01
FORMULA_NAME DNAwalker-PT-09ringLR-ReachabilityFireability-02
FORMULA_NAME DNAwalker-PT-09ringLR-ReachabilityFireability-03
FORMULA_NAME DNAwalker-PT-09ringLR-ReachabilityFireability-04
FORMULA_NAME DNAwalker-PT-09ringLR-ReachabilityFireability-05
FORMULA_NAME DNAwalker-PT-09ringLR-ReachabilityFireability-06
FORMULA_NAME DNAwalker-PT-09ringLR-ReachabilityFireability-07
FORMULA_NAME DNAwalker-PT-09ringLR-ReachabilityFireability-08
FORMULA_NAME DNAwalker-PT-09ringLR-ReachabilityFireability-09
FORMULA_NAME DNAwalker-PT-09ringLR-ReachabilityFireability-10
FORMULA_NAME DNAwalker-PT-09ringLR-ReachabilityFireability-11
FORMULA_NAME DNAwalker-PT-09ringLR-ReachabilityFireability-12
FORMULA_NAME DNAwalker-PT-09ringLR-ReachabilityFireability-13
FORMULA_NAME DNAwalker-PT-09ringLR-ReachabilityFireability-14
FORMULA_NAME DNAwalker-PT-09ringLR-ReachabilityFireability-15
=== Now, execution of the tool begins
BK_START 1526759577238
BK_STOP 1526759804521
--------------------
content from stderr:
Prefix is 65b80f64.
Reading known information in /usr/share/mcc4mcc/65b80f64-known.json.
Reading learned information in /usr/share/mcc4mcc/65b80f64-learned.json.
Reading value translations in /usr/share/mcc4mcc/65b80f64-values.json.
Using directory /home/mcc/execution for input, as it contains a model.pnml file.
Using DNAwalker-PT-09ringLR as instance name.
Using DNAwalker as model name.
Using algorithm or tool decision-tree.
Model characteristics are: {'Examination': 'ReachabilityFireability', 'Place/Transition': True, 'Colored': False, 'Relative-Time': 1, 'Relative-Memory': 1, 'Ordinary': False, 'Simple Free Choice': False, 'Extended Free Choice': False, 'State Machine': False, 'Marked Graph': False, 'Connected': True, 'Strongly Connected': False, 'Source Place': None, 'Sink Place': False, 'Source Transition': False, 'Sink Transition': None, 'Loop Free': False, 'Conservative': False, 'Sub-Conservative': True, 'Nested Units': False, 'Safe': False, 'Deadlock': True, 'Reversible': False, 'Quasi Live': None, 'Live': None}.
Known tools are: [{'Time': 3337, 'Memory': 294.15, 'Tool': 'itstools'}, {'Time': 3846, 'Memory': 339.85, 'Tool': 'itstools'}, {'Time': 10685, 'Memory': 7579.78, 'Tool': 'marcie'}, {'Time': 10787, 'Memory': 7579.98, 'Tool': 'marcie'}, {'Time': 1908214, 'Memory': 2007.14, 'Tool': 'lola'}, {'Time': 1909728, 'Memory': 2008.93, 'Tool': 'lola'}].
Learned tools are: [{'Tool': 'lola'}].
Learned tool lola is 571.8351813005694x far from the best tool itstools.
ReachabilityFireability lola DNAwalker-PT-09ringLR...
Time: 3600 - MCC
----- Start make prepare stdout -----
----- Start make prepare stderr -----
===========================================================================================
DNAwalker-PT-09ringLR: translating PT Petri net model.pnml into LoLA format
===========================================================================================
translating PT Petri net complete
checking for too many tokens
===========================================================================================
DNAwalker-PT-09ringLR: translating PT formula ReachabilityFireability into LoLA format
===========================================================================================
translating formula complete
touch formulae;
----- Start make result stdout -----
----- Start make result stderr -----
ReachabilityFireability @ DNAwalker-PT-09ringLR @ 3540 seconds
Makefile:222: recipe for target 'verify' failed
make: [verify] Error 134 (ignored)
----- Start make result stderr -----
----- Start make result stdout -----
lola: LoLA will run for 3540 seconds at most (--timelimit)
lola: NET
lola: reading net from model.pnml.lola
lola: finished parsing
lola: closed net file model.pnml.lola
lola: 287/65536 symbol table entries, 0 collisions
lola: preprocessing...
lola: finding significant places
lola: 27 places, 260 transitions, 27 significant places
lola: computing forward-conflicting sets
lola: computing back-conflicting sets
lola: 163 transition conflict sets
lola: TASK
lola: reading formula from DNAwalker-PT-09ringLR-ReachabilityFireability.task
lola: A (G ((NOT FIREABLE(t1_3) OR NOT FIREABLE(t14_9) OR NOT FIREABLE(t4_5) OR FIREABLE(t2_12)))) : E (F (FIREABLE(t6_1))) : A (G ((NOT FIREABLE(t18_12) OR NOT FIREABLE(t1_6) OR (NOT FIREABLE(t2_9) AND NOT FIREABLE(t19_3)) OR NOT FIREABLE(t9_5)))) : E (F (((FIREABLE(t9_7) AND FIREABLE(t16_18) AND FIREABLE(t8_11) AND FIREABLE(t13_12)) OR ((FIREABLE(tb20) OR FIREABLE(t3_5)) AND FIREABLE(t20_21)) OR (FIREABLE(t15_16) AND FIREABLE(t13_20) AND (FIREABLE(t14_17) OR FIREABLE(t2_3)) AND FIREABLE(t10_15))))) : E (F ((FIREABLE(t13_21) AND FIREABLE(t8_11) AND ((FIREABLE(t5_8) AND FIREABLE(t8_4)) OR (FIREABLE(t8_12) AND FIREABLE(t21_3)) OR FIREABLE(t14_17))))) : E (F ((FIREABLE(t14_15) AND FIREABLE(t8_4)))) : E (F ((FIREABLE(t2_21) AND NOT FIREABLE(t5_1)))) : A (G ((NOT FIREABLE(t10_9) OR NOT FIREABLE(t9_14) OR (FIREABLE(t19_3) AND FIREABLE(t4_20) AND NOT FIREABLE(t10_12)) OR NOT FIREABLE(t20_18)))) : E (F (((FIREABLE(t1_16) OR FIREABLE(t18_1)) AND FIREABLE(t12_15)))) : E (F ((FIREABLE(t6_4) AND (FIREABLE(t8_1) OR FIREABLE(t4_8)) AND NOT FIREABLE(t1_20) AND NOT FIREABLE(t9_2)))) : E (F (FIREABLE(t20_21))) : E (F (((NOT FIREABLE(t18_20) OR NOT FIREABLE(t19_17)) AND (FIREABLE(t13_10) OR FIREABLE(t20_17)) AND FIREABLE(t6_1)))) : E (F (((FIREABLE(t13_2) OR (FIREABLE(t11_8) AND FIREABLE(t1_11)) OR (FIREABLE(t4_13) AND FIREABLE(t2_12) AND (FIREABLE(t19_16) OR FIREABLE(t15_19)))) AND FIREABLE(t15_2)))) : E (F ((FIREABLE(t21_17) AND FIREABLE(t18_19) AND FIREABLE(t2_17) AND (NOT FIREABLE(t19_21) OR (FIREABLE(t5_20) AND FIREABLE(t14_13))) AND (NOT FIREABLE(t2_14) OR (FIREABLE(t21_5) AND FIREABLE(t11_7)) OR (FIREABLE(t18_15) AND FIREABLE(t12_13) AND NOT FIREABLE(t14_11)))))) : E (F (FIREABLE(t10_1))) : E (F ((FIREABLE(t20_2) AND NOT FIREABLE(t4_18))))
lola: computing a collection of formulas
lola: RUNNING
lola: subprocess 0 will run for 221 seconds at most (--localtimelimit=-1)
lola: ========================================
lola: ...considering subproblem: A (G ((NOT FIREABLE(t1_3) OR NOT FIREABLE(t14_9) OR NOT FIREABLE(t4_5) OR FIREABLE(t2_12))))
lola: ========================================
lola: SUBTASK
lola: checking invariance
lola: Planning: workflow for reachability check: stateequation||search (--findpath=off)
lola: STORE
lola: using a bit-perfect encoder (--encoder=bit)
lola: using 108 bytes per marking, with 0 unused bits
lola: using a prefix tree store (--store=prefix)
lola: SEARCH (state space)
lola: state space: using reachability graph (--search=depth)
lola: state space: using reachability preserving stubborn set method with insertion algorithm (--stubborn=tarjan)
lola: RUNNING
lola: state equation: Generated DNF with 14 literals and 2 conjunctive subformulas
lola: state equation: write sara problem file to DNAwalker-PT-09ringLR-ReachabilityFireability.sara
lola: state equation: calling and running sara
sara: try reading problem file DNAwalker-PT-09ringLR-ReachabilityFireability.sara.
sara: place or transition ordering is non-deterministic
lola: sara is running 0 secs || 426176 markings, 1762705 edges, 85235 markings/sec, 0 secs
lola: sara is running 5 secs || 843075 markings, 3654166 edges, 83380 markings/sec, 5 secs
lola: sara is running 10 secs || 1272733 markings, 5562045 edges, 85932 markings/sec, 10 secs
lola: sara is running 15 secs || 1731171 markings, 7384049 edges, 91688 markings/sec, 15 secs
lola: sara is running 20 secs || 2158602 markings, 9215355 edges, 85486 markings/sec, 20 secs
lola: sara is running 25 secs || 2555155 markings, 11061020 edges, 79311 markings/sec, 25 secs
lola: sara is running 30 secs || 2953686 markings, 12807580 edges, 79706 markings/sec, 30 secs
lola: sara is running 35 secs || 3338585 markings, 14688880 edges, 76980 markings/sec, 35 secs
lola: sara is running 40 secs || 3707961 markings, 16544681 edges, 73875 markings/sec, 40 secs
lola: sara is running 45 secs || 4050567 markings, 18410580 edges, 68521 markings/sec, 45 secs
lola: sara is running 50 secs || 4389952 markings, 20340685 edges, 67877 markings/sec, 50 secs
lola: sara is running 55 secs || 4758550 markings, 22224324 edges, 73720 markings/sec, 55 secs
lola: sara is running 60 secs || 5098499 markings, 24070735 edges, 67990 markings/sec, 60 secs
lola: sara is running 65 secs || 5428512 markings, 26012698 edges, 66003 markings/sec, 65 secs
lola: sara is running 70 secs || 5754967 markings, 27926332 edges, 65291 markings/sec, 70 secs
lola: sara is running 75 secs || 6082854 markings, 29972688 edges, 65577 markings/sec, 75 secs
lola: sara is running 80 secs || 6495753 markings, 31849229 edges, 82580 markings/sec, 80 secs
lola: sara is running 85 secs || 6895705 markings, 33659850 edges, 79990 markings/sec, 85 secs
lola: sara is running 90 secs || 7272670 markings, 35468762 edges, 75393 markings/sec, 90 secs
lola: sara is running 95 secs || 7606740 markings, 37406297 edges, 66814 markings/sec, 95 secs
lola: sara is running 100 secs || 7958334 markings, 39266075 edges, 70319 markings/sec, 100 secs
lola: sara is running 105 secs || 8276975 markings, 41248874 edges, 63728 markings/sec, 105 secs
lola: sara is running 110 secs || 8595036 markings, 43128691 edges, 63612 markings/sec, 110 secs
lola: sara is running 115 secs || 8896975 markings, 44910041 edges, 60388 markings/sec, 115 secs
lola: sara is running 120 secs || 9173107 markings, 46828710 edges, 55226 markings/sec, 120 secs
lola: sara is running 125 secs || 9516721 markings, 48692943 edges, 68723 markings/sec, 125 secs
lola: sara is running 130 secs || 9860946 markings, 50511839 edges, 68845 markings/sec, 130 secs
lola: sara is running 135 secs || 10167460 markings, 52335452 edges, 61303 markings/sec, 135 secs
lola: sara is running 140 secs || 10466885 markings, 54237910 edges, 59885 markings/sec, 140 secs
lola: sara is running 145 secs || 10743439 markings, 56236790 edges, 55311 markings/sec, 145 secs
lola: sara is running 150 secs || 11131608 markings, 58081307 edges, 77634 markings/sec, 150 secs
lola: sara is running 155 secs || 11392131 markings, 60128528 edges, 52105 markings/sec, 155 secs
lola: sara is running 160 secs || 11635607 markings, 62326592 edges, 48695 markings/sec, 160 secs
lola: sara is running 165 secs || 11909720 markings, 64482041 edges, 54823 markings/sec, 165 secs
lola: sara is running 170 secs || 12217745 markings, 66398081 edges, 61605 markings/sec, 170 secs
lola: sara is running 175 secs || 12548921 markings, 68307323 edges, 66235 markings/sec, 175 secs
lola: sara is running 180 secs || 12849086 markings, 70280924 edges, 60033 markings/sec, 180 secs
lola: sara is running 185 secs || 13120084 markings, 72475862 edges, 54200 markings/sec, 185 secs
lola: sara is running 190 secs || 13392312 markings, 74579430 edges, 54446 markings/sec, 190 secs
lola: sara is running 195 secs || 13645304 markings, 76748045 edges, 50598 markings/sec, 195 secs
lola: sara is running 200 secs || 13887806 markings, 79026628 edges, 48500 markings/sec, 200 secs
lola: sara is running 205 secs || 14156369 markings, 81313576 edges, 53713 markings/sec, 205 secs
lola: sara is running 210 secs || 14412151 markings, 83587994 edges, 51156 markings/sec, 210 secs
lola: sara is running 215 secs || 14678765 markings, 85899841 edges, 53323 markings/sec, 215 secs
lola: local time limit reached - aborting
lola: Child process aborted or communication problem between parent and child process
terminate called after throwing an instance of 'std::runtime_error'
what(): parse error at position 0: unexpected character, last read: '\ufffd'
Aborted (core dumped)
FORMULA DNAwalker-PT-09ringLR-ReachabilityFireability-0 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA DNAwalker-PT-09ringLR-ReachabilityFireability-1 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA DNAwalker-PT-09ringLR-ReachabilityFireability-2 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA DNAwalker-PT-09ringLR-ReachabilityFireability-3 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA DNAwalker-PT-09ringLR-ReachabilityFireability-4 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA DNAwalker-PT-09ringLR-ReachabilityFireability-5 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA DNAwalker-PT-09ringLR-ReachabilityFireability-6 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA DNAwalker-PT-09ringLR-ReachabilityFireability-7 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA DNAwalker-PT-09ringLR-ReachabilityFireability-8 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA DNAwalker-PT-09ringLR-ReachabilityFireability-9 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA DNAwalker-PT-09ringLR-ReachabilityFireability-10 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA DNAwalker-PT-09ringLR-ReachabilityFireability-11 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA DNAwalker-PT-09ringLR-ReachabilityFireability-12 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA DNAwalker-PT-09ringLR-ReachabilityFireability-13 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA DNAwalker-PT-09ringLR-ReachabilityFireability-14 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
FORMULA DNAwalker-PT-09ringLR-ReachabilityFireability-15 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL USE_NUPN
----- Kill lola and sara stdout -----
----- Kill lola and sara stderr -----
----- Finished stdout -----
----- Finished 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="DNAwalker-PT-09ringLR"
export BK_EXAMINATION="ReachabilityFireability"
export BK_TOOL="mcc4mcc-full"
export BK_RESULT_DIR="/tmp/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/DNAwalker-PT-09ringLR.tgz
mv DNAwalker-PT-09ringLR execution
cd execution
pwd
ls -lh
# this is for BenchKit: explicit launching of the test
echo "====================================================================="
echo " Generated by BenchKit 2-3637"
echo " Executing tool mcc4mcc-full"
echo " Input is DNAwalker-PT-09ringLR, examination is ReachabilityFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r070-smll-152649743100287"
echo "====================================================================="
echo
echo "--------------------"
echo "content from stdout:"
echo
echo "=== Data for post analysis generated by BenchKit (invocation template)"
echo
if [ "ReachabilityFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "ReachabilityFireability" != "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 "ReachabilityFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property ReachabilityFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "ReachabilityFireability.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 '
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 ;