About the Execution of smart for Angiogenesis-PT-20
Execution Summary | |||||
Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
15766.220 | 1018462.00 | 1017990.00 | 50.00 | [undef] | Cannot compute |
Execution Chart
We display below the execution chart for this examination (boot time has been removed).
Trace from the execution
Formatting '/data/fkordon/mcc2020-input.r003-smll-158897508400348.qcow2', fmt=qcow2 size=4294967296 backing_file='/data/fkordon/mcc2020-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 smart
Input is Angiogenesis-PT-20, examination is CTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 1
Run identifier is r003-smll-158897508400348
=====================================================================
--------------------
preparation of the directory to be used:
/home/mcc/execution
total 228K
-rw-r--r-- 1 mcc users 4.9K Apr 28 14:22 CTLCardinality.txt
-rw-r--r-- 1 mcc users 27K Apr 28 14:22 CTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K Apr 28 14:22 CTLFireability.txt
-rw-r--r-- 1 mcc users 16K Apr 28 14:22 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K Apr 28 14:22 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.0K Apr 28 14:22 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.9K Apr 28 14:22 LTLCardinality.txt
-rw-r--r-- 1 mcc users 26K Apr 28 14:22 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.0K Apr 28 14:22 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K Apr 28 14:22 LTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Apr 28 14:22 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 20K Apr 28 14:22 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 2.4K Apr 28 14:22 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 13K Apr 28 14:22 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Apr 28 14:22 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Apr 28 14:22 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Apr 28 14:22 equiv_col
-rw-r--r-- 1 mcc users 3 Apr 28 14:22 instance
-rw-r--r-- 1 mcc users 6 Apr 28 14:22 iscolored
-rw-r--r-- 1 mcc users 33K Apr 28 14:22 model.pnml
--------------------
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 Angiogenesis-PT-20-CTLFireability-00
FORMULA_NAME Angiogenesis-PT-20-CTLFireability-01
FORMULA_NAME Angiogenesis-PT-20-CTLFireability-02
FORMULA_NAME Angiogenesis-PT-20-CTLFireability-03
FORMULA_NAME Angiogenesis-PT-20-CTLFireability-04
FORMULA_NAME Angiogenesis-PT-20-CTLFireability-05
FORMULA_NAME Angiogenesis-PT-20-CTLFireability-06
FORMULA_NAME Angiogenesis-PT-20-CTLFireability-07
FORMULA_NAME Angiogenesis-PT-20-CTLFireability-08
FORMULA_NAME Angiogenesis-PT-20-CTLFireability-09
FORMULA_NAME Angiogenesis-PT-20-CTLFireability-10
FORMULA_NAME Angiogenesis-PT-20-CTLFireability-11
FORMULA_NAME Angiogenesis-PT-20-CTLFireability-12
FORMULA_NAME Angiogenesis-PT-20-CTLFireability-13
FORMULA_NAME Angiogenesis-PT-20-CTLFireability-14
FORMULA_NAME Angiogenesis-PT-20-CTLFireability-15
=== Now, execution of the tool begins
BK_START 1589127218078
======================================================
========== this is Smart for the MCC'2018 ============
======================================================
Running Angiogenesis (PT), instance 20
Examination CTLFireability
Parser /home/mcc/BenchKit/bin/parser/CTLFire.jar
Model checker /home/mcc/BenchKit/bin/rem_exec/smart
GOT IT HERE. BS
Petri model created: 39 places, 64 transitions, 185 arcs.
AT ITER 0 NEW BEST:: SOT 1596 SOS 760 HAS SOPS 760 HAS SOUS 597 HAS SOUPS 597 WITH SCORE 597.76
AT ITER 10 NEW BEST:: SOT 1554 SOS 833 HAS SOPS 833 HAS SOUS 567 HAS SOUPS 567 WITH SCORE 567.833
AT ITER 11 NEW BEST:: SOT 1548 SOS 825 HAS SOPS 825 HAS SOUS 559 HAS SOUPS 559 WITH SCORE 559.825
AT ITER 13 NEW BEST:: SOT 1538 SOS 815 HAS SOPS 815 HAS SOUS 546 HAS SOUPS 546 WITH SCORE 546.815
AT ITER 14 NEW BEST:: SOT 1538 SOS 811 HAS SOPS 811 HAS SOUS 546 HAS SOUPS 546 WITH SCORE 546.811
AT ITER 15 NEW BEST:: SOT 1524 SOS 740 HAS SOPS 740 HAS SOUS 534 HAS SOUPS 534 WITH SCORE 534.74
AT ITER 25 NEW BEST:: SOT 1503 SOS 782 HAS SOPS 782 HAS SOUS 513 HAS SOUPS 513 WITH SCORE 513.782
AT ITER 28 NEW BEST:: SOT 1499 SOS 778 HAS SOPS 778 HAS SOUS 499 HAS SOUPS 499 WITH SCORE 499.778
AT ITER 29 NEW BEST:: SOT 1505 SOS 699 HAS SOPS 699 HAS SOUS 495 HAS SOUPS 495 WITH SCORE 495.699
AT ITER 43 NEW BEST:: SOT 1493 SOS 700 HAS SOPS 700 HAS SOUS 493 HAS SOUPS 493 WITH SCORE 493.7
AT ITER 45 NEW BEST:: SOT 1493 SOS 694 HAS SOPS 694 HAS SOUS 491 HAS SOUPS 491 WITH SCORE 491.694
AT ITER 52 NEW BEST:: SOT 1491 SOS 692 HAS SOPS 692 HAS SOUS 489 HAS SOUPS 489 WITH SCORE 489.692
AT ITER 60 NEW BEST:: SOT 1492 SOS 693 HAS SOPS 693 HAS SOUS 487 HAS SOUPS 487 WITH SCORE 487.693
AT ITER 63 NEW BEST:: SOT 1488 SOS 689 HAS SOPS 689 HAS SOUS 469 HAS SOUPS 469 WITH SCORE 469.689
AT ITER 81 NEW BEST:: SOT 1486 SOS 687 HAS SOPS 687 HAS SOUS 469 HAS SOUPS 469 WITH SCORE 469.687
AT ITER 83 NEW BEST:: SOT 1484 SOS 683 HAS SOPS 683 HAS SOUS 467 HAS SOUPS 467 WITH SCORE 467.683
AT ITER 91 NEW BEST:: SOT 1476 SOS 675 HAS SOPS 675 HAS SOUS 459 HAS SOUPS 459 WITH SCORE 459.675
AT ITER 94 NEW BEST:: SOT 1468 SOS 715 HAS SOPS 715 HAS SOUS 456 HAS SOUPS 456 WITH SCORE 456.715
AT ITER 109 NEW BEST:: SOT 1470 SOS 697 HAS SOPS 697 HAS SOUS 454 HAS SOUPS 454 WITH SCORE 454.697
AT ITER 128 NEW BEST:: SOT 1470 SOS 690 HAS SOPS 690 HAS SOUS 453 HAS SOUPS 453 WITH SCORE 453.69
AT ITER 152 NEW BEST:: SOT 1464 SOS 684 HAS SOPS 684 HAS SOUS 447 HAS SOUPS 447 WITH SCORE 447.684
AT ITER 207 NEW BEST:: SOT 1463 SOS 673 HAS SOPS 673 HAS SOUS 442 HAS SOUPS 442 WITH SCORE 442.673
AT ITER 222 NEW BEST:: SOT 1465 SOS 667 HAS SOPS 667 HAS SOUS 440 HAS SOUPS 440 WITH SCORE 440.667
AT ITER 223 NEW BEST:: SOT 1465 SOS 666 HAS SOPS 666 HAS SOUS 440 HAS SOUPS 440 WITH SCORE 440.666
AT ITER 244 NEW BEST:: SOT 1468 SOS 638 HAS SOPS 638 HAS SOUS 439 HAS SOUPS 439 WITH SCORE 439.638
AT ITER 250 NEW BEST:: SOT 1466 SOS 628 HAS SOPS 628 HAS SOUS 433 HAS SOUPS 433 WITH SCORE 433.628
AT ITER 259 NEW BEST:: SOT 1468 SOS 624 HAS SOPS 624 HAS SOUS 432 HAS SOUPS 432 WITH SCORE 432.624
AT ITER 278 NEW BEST:: SOT 1469 SOS 630 HAS SOPS 630 HAS SOUS 431 HAS SOUPS 431 WITH SCORE 431.63
AT ITER 289 NEW BEST:: SOT 1469 SOS 621 HAS SOPS 621 HAS SOUS 431 HAS SOUPS 431 WITH SCORE 431.621
AT ITER 308 NEW BEST:: SOT 1469 SOS 621 HAS SOPS 621 HAS SOUS 429 HAS SOUPS 429 WITH SCORE 429.621
AT ITER 319 NEW BEST:: SOT 1469 SOS 617 HAS SOPS 617 HAS SOUS 429 HAS SOUPS 429 WITH SCORE 429.617
AT ITER 333 NEW BEST:: SOT 1469 SOS 620 HAS SOPS 620 HAS SOUS 428 HAS SOUPS 428 WITH SCORE 428.62
AT ITER 354 NEW BEST:: SOT 1465 SOS 616 HAS SOPS 616 HAS SOUS 424 HAS SOUPS 424 WITH SCORE 424.616
AT ITER 366 NEW BEST:: SOT 1466 SOS 613 HAS SOPS 613 HAS SOUS 423 HAS SOUPS 423 WITH SCORE 423.613
AT ITER 368 NEW BEST:: SOT 1464 SOS 611 HAS SOPS 611 HAS SOUS 421 HAS SOUPS 421 WITH SCORE 421.611
AT ITER 397 NEW BEST:: SOT 1460 SOS 615 HAS SOPS 615 HAS SOUS 417 HAS SOUPS 417 WITH SCORE 417.615
AT ITER 481 NEW BEST:: SOT 1459 SOS 613 HAS SOPS 613 HAS SOUS 416 HAS SOUPS 416 WITH SCORE 416.613
AT ITER 484 NEW BEST:: SOT 1456 SOS 620 HAS SOPS 620 HAS SOUS 413 HAS SOUPS 413 WITH SCORE 413.62
AT ITER 507 NEW BEST:: SOT 1454 SOS 614 HAS SOPS 614 HAS SOUS 409 HAS SOUPS 409 WITH SCORE 409.614
AT ITER 620 NEW BEST:: SOT 1454 SOS 612 HAS SOPS 612 HAS SOUS 408 HAS SOUPS 408 WITH SCORE 408.612
AT ITER 672 NEW BEST:: SOT 1451 SOS 609 HAS SOPS 609 HAS SOUS 405 HAS SOUPS 405 WITH SCORE 405.609
AT ITER 700 NEW BEST:: SOT 1451 SOS 608 HAS SOPS 608 HAS SOUS 404 HAS SOUPS 404 WITH SCORE 404.608
AT ITER 800 NEW BEST:: SOT 1455 SOS 606 HAS SOPS 606 HAS SOUS 403 HAS SOUPS 403 WITH SCORE 403.606
AT ITER 916 NEW BEST:: SOT 1454 SOS 604 HAS SOPS 604 HAS SOUS 402 HAS SOUPS 402 WITH SCORE 402.604
AT ITER 1011 NEW BEST:: SOT 1453 SOS 603 HAS SOPS 603 HAS SOUS 401 HAS SOUPS 401 WITH SCORE 401.603
AT ITER 1026 NEW BEST:: SOT 1448 SOS 603 HAS SOPS 603 HAS SOUS 398 HAS SOUPS 398 WITH SCORE 398.603
AT ITER 1113 NEW BEST:: SOT 1445 SOS 599 HAS SOPS 599 HAS SOUS 393 HAS SOUPS 393 WITH SCORE 393.599
AT ITER 1117 NEW BEST:: SOT 1442 SOS 603 HAS SOPS 603 HAS SOUS 392 HAS SOUPS 392 WITH SCORE 392.603
AT ITER 1129 NEW BEST:: SOT 1441 SOS 602 HAS SOPS 602 HAS SOUS 391 HAS SOUPS 391 WITH SCORE 391.602
AT ITER 1195 NEW BEST:: SOT 1439 SOS 600 HAS SOPS 600 HAS SOUS 389 HAS SOUPS 389 WITH SCORE 389.6
AT ITER 1317 NEW BEST:: SOT 1438 SOS 608 HAS SOPS 608 HAS SOUS 388 HAS SOUPS 388 WITH SCORE 388.608
AT ITER 1351 NEW BEST:: SOT 1438 SOS 605 HAS SOPS 605 HAS SOUS 386 HAS SOUPS 386 WITH SCORE 386.605
AT ITER 1516 NEW BEST:: SOT 1431 SOS 620 HAS SOPS 620 HAS SOUS 383 HAS SOUPS 383 WITH SCORE 383.62
AT ITER 1581 NEW BEST:: SOT 1431 SOS 617 HAS SOPS 617 HAS SOUS 381 HAS SOUPS 381 WITH SCORE 381.617
AT ITER 1614 NEW BEST:: SOT 1429 SOS 615 HAS SOPS 615 HAS SOUS 378 HAS SOUPS 378 WITH SCORE 378.615
AT ITER 1656 NEW BEST:: SOT 1427 SOS 617 HAS SOPS 617 HAS SOUS 375 HAS SOUPS 375 WITH SCORE 375.617
AT ITER 1793 NEW BEST:: SOT 1429 SOS 611 HAS SOPS 611 HAS SOUS 375 HAS SOUPS 375 WITH SCORE 375.611
AT ITER 1825 NEW BEST:: SOT 1429 SOS 610 HAS SOPS 610 HAS SOUS 374 HAS SOUPS 374 WITH SCORE 374.61
AT ITER 1842 NEW BEST:: SOT 1425 SOS 611 HAS SOPS 611 HAS SOUS 370 HAS SOUPS 370 WITH SCORE 370.611
AT ITER 3037 NEW BEST:: SOT 1422 SOS 641 HAS SOPS 641 HAS SOUS 369 HAS SOUPS 369 WITH SCORE 369.641
AT ITER 3163 NEW BEST:: SOT 1419 SOS 638 HAS SOPS 638 HAS SOUS 363 HAS SOUPS 363 WITH SCORE 363.638
AT ITER 3448 NEW BEST:: SOT 1418 SOS 626 HAS SOPS 626 HAS SOUS 361 HAS SOUPS 361 WITH SCORE 361.626
Bounds file is: CTLFireability.xml
PROPERTY: Angiogenesis-PT-20-CTLFireability-00 (! (EF( ( ((potential((tk(P33)>=1) & (tk(P1)>=1)))) & (AF( ((potential((tk(P25)>=1) & (tk(P32)>=1)))))) ))))
PROPERTY: Angiogenesis-PT-20-CTLFireability-01 (! (EU( (! ( ((potential((tk(P19)>=1) & (tk(P32)>=1)))) & ((potential((tk(P31)>=1)))) )) , ( ((potential((tk(P18)>=1)))) & ( ((potential((tk(P15)>=1) & (tk(P34)>=1)))) | ((potential((tk(P8)>=1) & (tk(P12)>=1)))) ) ) )))
PROPERTY: Angiogenesis-PT-20-CTLFireability-02 (AG( (AF( (EX( ((potential((tk(P37)>=1))))))))))
PROPERTY: Angiogenesis-PT-20-CTLFireability-03 ( (! ( (AF( (! ((potential((tk(P37)>=1) & (tk(P33)>=1))))))) & ( ( (! ((potential((tk(P23)>=1))))) & ( ((potential((tk(P4)>=1) & (tk(P6)>=1)))) & ((potential((tk(P31)>=1)))) ) ) | ((potential((tk(P8)>=1) & (tk(P12)>=1)))) ) )) & ( ((potential((tk(P9)>=1) & (tk(P35)>=1)))) | (EF( (! (! ((potential((tk(P9)>=1) & (tk(P34)>=1)))))))) ) )
PROPERTY: Angiogenesis-PT-20-CTLFireability-04 (EF( (EU( ((potential((tk(P11)>=1)))) , ((potential((tk(P28)>=1)))) ))))
PROPERTY: Angiogenesis-PT-20-CTLFireability-05 (! (EU( (! ( ((potential((tk(P17)>=1)))) & ((potential((tk(P20)>=1)))) )) , (AG( ((potential((tk(P11)>=1) & (tk(P12)>=1)))))) )))
PROPERTY: Angiogenesis-PT-20-CTLFireability-06 (AG( (EG( (EF( ((potential((tk(P26)>=1))))))))))
PROPERTY: Angiogenesis-PT-20-CTLFireability-07 (AX( (EU( (! ((potential((tk(P15)>=1) & (tk(P35)>=1))))) , ((potential((tk(P23)>=1)))) ))))
PROPERTY: Angiogenesis-PT-20-CTLFireability-08 (EF( ( (AF( ((potential((tk(P16)>=1)))))) & ( (EF( ((potential((tk(P5)>=1)))))) | ( ( ((potential((tk(P9)>=1) & (tk(P34)>=1)))) | ((potential((tk(P13)>=1)))) ) & ( ((potential((tk(P10)>=1)))) | ((potential((tk(P9)>=1) & (tk(P12)>=1)))) ) ) ) )))
PROPERTY: Angiogenesis-PT-20-CTLFireability-09 (EU( (! ( ((potential((tk(P29)>=1)))) | ((potential((tk(P24)>=1)))) )) , ( (! ( ((potential((tk(P21)>=1) & (tk(P32)>=1)))) & ((potential((tk(P23)>=1)))) )) & ( ( ((potential((tk(P5)>=1)))) & ((potential((tk(P33)>=1) & (tk(P36)>=1)))) ) & ( ((potential((tk(P32)>=1) & (tk(P36)>=1)))) | ((potential((tk(P18)>=1)))) ) ) ) ))
PROPERTY: Angiogenesis-PT-20-CTLFireability-10 (! (EU( (EF( ((potential((tk(P18)>=1)))))) , ((potential((tk(P33)>=1) & (tk(P36)>=1)))) )))
PROPERTY: Angiogenesis-PT-20-CTLFireability-11 (! ( ( (AU( ((potential((tk(P15)>=1) & (tk(P34)>=1)))) , ((potential((tk(P12)>=1) & (tk(P35)>=1)))) )) & (! ( ( ((potential((tk(P38)>=1)))) | ((potential((tk(P11)>=1)))) ) | ( ((potential((tk(P27)>=1) & (tk(P32)>=1)))) | ((potential((tk(P21)>=1) & (tk(P32)>=1)))) ) )) ) & ( (EF( ((potential((tk(P10)>=1)))))) | ( ((potential((tk(P16)>=1) & (tk(P34)>=1)))) | (EX( ((potential((tk(P28)>=1)))))) ) ) ))
PROPERTY: Angiogenesis-PT-20-CTLFireability-12 (EU( ((potential((tk(P11)>=1)))) , (EF( ( ((potential((tk(P29)>=1)))) & ((potential((tk(P39)>=1)))) ))) ))
PROPERTY: Angiogenesis-PT-20-CTLFireability-13 (AG( (! ( ( ((potential((tk(P39)>=1)))) & ((potential((tk(P24)>=1)))) ) & (AF( ((potential((tk(P38)>=1)))))) ))))
PROPERTY: Angiogenesis-PT-20-CTLFireability-14 (AG( (EF( (! ( ((potential((tk(P33)>=1) & (tk(P1)>=1)))) | ((potential((tk(P21)>=1) & (tk(P32)>=1)))) ))))))
PROPERTY: Angiogenesis-PT-20-CTLFireability-15 (EF( (AX( (AF( ((potential((tk(P18)>=1))))))))))
BK_STOP 1589128236540
--------------------
content from stderr:
terminate called after throwing an instance of 'sv_encoder::error'
/home/mcc/BenchKit/bin/smart.sh: line 117: 365 Aborted ${SMART} ${INPUT_SM}
Sequence of Actions to be Executed by the VM
This is useful if one wants to reexecute the tool in the VM from the submitted image disk.
set -x
# this is for BenchKit: configuration of major elements for the test
export BK_INPUT="Angiogenesis-PT-20"
export BK_EXAMINATION="CTLFireability"
export BK_TOOL="smart"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"
# this is specific to your benchmark or test
export BIN_DIR="$HOME/BenchKit/bin"
# remove the execution directoty if it exists (to avoid increse of .vmdk images)
if [ -d execution ] ; then
rm -rf execution
fi
# this is for BenchKit: explicit launching of the test
echo "====================================================================="
echo " Generated by BenchKit 2-4028"
echo " Executing tool smart"
echo " Input is Angiogenesis-PT-20, examination is CTLFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 1"
echo " Run identifier is r003-smll-158897508400348"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"
tar xzf /home/mcc/BenchKit/INPUTS/Angiogenesis-PT-20.tgz
mv Angiogenesis-PT-20 execution
cd execution
if [ "CTLFireability" = "ReachabilityDeadlock" ] || [ "CTLFireability" = "UpperBounds" ] || [ "CTLFireability" = "QuasiLiveness" ] || [ "CTLFireability" = "StableMarking" ] || [ "CTLFireability" = "Liveness" ] || [ "CTLFireability" = "OneSafe" ] || [ "CTLFireability" = "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 [ "CTLFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "CTLFireability" != "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 "CTLFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property CTLFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "CTLFireability.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
elif [ "CTLFireability" = "ReachabilityDeadlock" ] || [ "CTLFireability" = "QuasiLiveness" ] || [ "CTLFireability" = "StableMarking" ] || [ "CTLFireability" = "Liveness" ] || [ "CTLFireability" = "OneSafe" ] ; then
echo "FORMULA_NAME CTLFireability"
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 ;