Trace number 3096339

Some explanations

A solver is run under the control of another program named runsolver. runsolver is in charge of imposing the CPU time limit and the memory limit to the solver. It also monitors some information about the process. The trace of the execution of a solver is divided into four (or five) parts:
  1. SOLVER DATA
    This is the output of the solver (stdout and stderr).
    Note that some very long lines in this section may be truncated by your web browser ! In such a case, you may want to use the "Download as text" link to get the trace as a text file.

    When the --timestamp option is passed to the runsolver program, each line output by the solver is prepended with a timestamp which indicates at what time the line was output by the solver. Times are relative to the start of the program, given in seconds. The first timestamp (if present) is estimated CPU time. The last timestamp is wall clock time.

    As some 'v lines' may be very long (sometimes several megabytes), the 'v line' output by your solver may be split on several lines to help limit the size of the trace recorded in the database. In any case, the exact output of your solver is preserved in a trace file.
  2. VERIFIER DATA
    The output of the solver is piped to a verifier program which will search a value line "v " and, if found, will check that the given interpretation satisfies all constraints.
  3. CONVERSION SCRIPT DATA (Optionnal)
    When a conversion script is used, this section shows the messages that were output by the conversion script.
  4. WATCHER DATA
    This is the informations gathered by the runsolver program. It first prints the different limits. There's a first limit on CPU time set to X seconds (see the parameters in the trace). After this time has ellapsed, runsolver sends a SIGTERM and 2 seconds later a SIGKILL to the solver. For safety, there's also another limit set to X+30 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (see the parameters in the trace).
    Every ten seconds, the runsolver process fetches the content of /proc/loadavg, /proc/pid/stat and /proc/pid/statm (see man proc) and prints it as raw data. This is only recorded in case we need to investigate the behaviour of a solver. The memory used by the solver (vsize) is also given every ten seconds.
    When the solver exits, runsolver prints some informations such as status and time. CPU usage is the ratio CPU Time/Real Time.
  5. LAUNCHER DATA
    These informations are related to the script which will launch the solver. The most important informations are the command line given to the solver, the md5sum of the different files and the dump of the /proc/cpuinfo and /proc/meminfo which provides some useful information on the computer.

Solver answer on this benchmark

Solver NameAnswerCPU timeWall clock time
MultiFlip 2011-02-11SAT 0.110982 0.111287

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v800-c3408-S902286199-017.SATISFIABLE.cnf
MD5SUM598e5ac0f35fb3d353f44669087059bc
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.035993
Satisfiable
(Un)Satisfiability was proved
Number of variables800
Number of clauses3408
Sum of the clauses size10224
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 33408
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.10/0.11	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.10/0.11	c input CNF file=HOME/instance-3096339-1301759456.cnf 
0.10/0.11	c var#=800 clause#=3408 
0.10/0.11	c clause#=3408 var#=800 ratio=4 
0.10/0.11	c Unsat#=         3 flip#=     10713 
0.10/0.11	c Unsat#=         2 flip#=     52161 
0.10/0.11	c Unsat#=         1 flip#=     83225 
0.10/0.11	c Unsat#=         0 flip#=     84039 
0.10/0.11	c try 1-th flip# 84039
0.10/0.11	c A solution is found
0.10/0.11	c verified 
0.10/0.11	s SATISFIABLE
0.10/0.11	v -1 -2 3 -4 -5 -6 -7 -8 -9 -10 -11 -12 -13 14 -15 -16 17 18 19 -20 -21 -22 23 -24 -25 -26 27 -28 -29 -30 31 -32 -33 34 -35 36 -37 -38 39 40 41 42 -43 44 45 -46 -47 48 -49 50 51 52 -53 -54 55 -56 -57 58 -59 -60 -61 -62 -63 -64 65 -66 67 68 -69 -70 -71 -72 -73 -74 -75 76 -77 -78 -79 80 -81 -82 83 -84 -85 86 87 88 -89 -90 91 92 93 -94 -95 -96 -97 98 99 -100 -101 102 -103 -104 105 106 -107 -108 -109 110 111 -112 113 114 115 -116 117 118 119 120 121 122 123 -124 125 -126 -127 -128 129 -130 -131 -132 -133 134 -135 136 -137 -138 -139 140 141 142 143 -144 145 -146 -147 148 149 150 151 -152 153 -154 -155 -156 157 158 159 160 161 -162 163 164 165 -166 167 168 -169 -170 171 -172 173 174 175 -176 -177 -178 -179 -180 181 -182 183 184 185 -186 -187 -188 189 -190 -191 192 -193 194 -195 -196 197 -198 -199 200 201 -202 203 204 205 -206 -207 -208 209 210 -211 212 213 214 -215 -216 217 -218 219 -220 -221 222 -223 224 225 -226 227 -228 -229 -230 -231 -232 -233 -234 -235 -236 -237 238 239 240 -241 242 243 -244 245 -246 -247 248 249 -250 -251 252 253 -254 -255 -256 257 258 -259 260 261 262 -263 264 -265 -266 267 -268 269 -270 -271 272 -273 274 -275 276 -277 -278 279 -280 281 282 283 -284 -285 286 287 288 -289 -290 -291 -292 293 294 295 -296 -297 -298 -299 300 301 302 303 -304 305 -306 307 308 309 310 -311 -312 313 314 315 316 -317 318 -319 320 -321 322 -323 324 -325 326 327 -328 329 330 -331 332 333 -334 -335 336 -337 -338 339 -340 -341 -342 343 -344 345 -346 347 348 349 350 351 352 -353 -354 355 -356 357 358 359 360 361 362 -363 364 -365 366 -367 368 -369 -370 -371 -372 -373 374 375 -376 377 378 379 380 381 382 -383 -384 385 386 -387 -388 389 -390 391 392 -393 -394 395 -396 397 398 399 400 401 402 -403 404 -405 406 407 -408 409 -410 411 -412 -413 -414 415 416 417 418 419 420 421 -422 -423 -424 -425 426 -427 -428 -429 -430 -431 432 -433 434 435 436 437 -438 439 440 441 -442 -443 444 445 -446 447 -448 -449 -450 451 -452 -453 -454 455 -456 457 458 -459 -460 -461 -462 463 -464 465 466 467 -468 469 470 471 472 -473 474 -475 -476 -477 478 479 480 -481 -482 -483 -484 485 -486 487 488 -489 490 491 492 -493 494 -495 496 497 -498 499 500 501 502 -503 504 505 506 -507 -508 -509 -510 511 -512 513 -514 -515 -516 517 518 519 -520 521 522 523 -524 -525 -526 -527 -528 -529 530 531 -532 533 -534 535 -536 -537 -538 -539 540 541 -542 -543 544 -545 -546 547 548 549 -550 -551 -552 -553 554 -555 -556 -557 558 559 -560 561 -562 -563 -564 565 -566 567 568 569 -570 571 -572 573 -574 575 -576 -577 578 579 580 581 582 -583 584 585 586 587 588 -589 -590 -591 -592 593 594 595 596 597 -598 -599 600 601 602 603 -604 605 606 607 -608 609 -610 611 612 613 614 615 -616 -617 -618 -619 620 -621 622 -623 -624 625 -626 -627 628 -629 630 -631 632 633 -634 635 636 -637 -638 639 -640 -641 642 643 644 645 646 647 -648 -649 -650 -651 652 653 654 -655 656 -657 658 659 -660 -661 -662 -663 -664 665 666 667 -668 -669 670 671 -672 673 -674 -675 -676 677 -678 -679 680 681 -682 683 -684 685 686 687 -688 689 -690 691 692 693 -694 695 696 697 -698 -699 700 -701 -702 -703 -704 705 706 -707 -708 -709 710 -711 -712 -713 714 -715 716 -717 -718 -719 720 721 722 723 -724 -725 -726 727 728 -729 730 731 732 733 -734 -735 736 737 738 -739 -740 -741 742 743 744 745 -746 -747 -748 -749 750 -751 752 -753 -754 -755 -756 757 -758 -759 760 -761 -762 -763 764 765 -766 -767 768 769 770 -771 -772 -773 -774 775 776 -777 778 779 780 781 782 -783 784 785 -786 787 -788 789 -790 -791 -792 793 794 795 -796 797 -798 799 -800 
0.10/0.11	v 0
0.10/0.11	c Done (Running cputime is 0.102 seconds)

Verifier Data 

OK

Watcher Data 

runsolver Copyright (C) 2010 Olivier ROUSSEL

This is runsolver version 3.3.0 (svn: 893)

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-3096339-1301759456/watcher-3096339-1301759456 -o /tmp/evaluation-result-3096339-1301759456/solver-3096339-1301759456 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096339-1301759456.cnf 

running on 2 cores: 4,6

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 2400 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 2430 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1300 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 7864320 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 7915520 KiB
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 4.01 4.00 3.93 3/187 27014
/proc/meminfo: memFree=21347500/32951124 swapFree=67111528/67111528
[pid=27014] ppid=27012 vsize=3120 CPUtime=0 cores=4,6
/proc/27014/stat : 27014 (MultiFlip) R 27012 27014 26496 0 -1 4202496 366 0 0 0 0 0 0 0 25 0 1 0 268361502 3194880 304 33554432000 134512640 134540672 4290953360 18446744073709551615 134538820 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/27014/statm: 780 304 217 7 0 137 0

[startup+0.105126 s]
/proc/loadavg: 4.01 4.00 3.93 3/187 27014
/proc/meminfo: memFree=21347500/32951124 swapFree=67111528/67111528
[pid=27014] ppid=27012 vsize=3120 CPUtime=0.1 cores=4,6
/proc/27014/stat : 27014 (MultiFlip) R 27012 27014 26496 0 -1 4202496 402 0 0 0 10 0 0 0 25 0 1 0 268361502 3194880 340 33554432000 134512640 134540672 4290953360 18446744073709551615 134523874 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/27014/statm: 780 340 220 7 0 137 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 3120

Solver just ended. Dumping a history of the last processes samples

[startup+0.105126 s]
/proc/loadavg: 4.01 4.00 3.93 3/187 27014
/proc/meminfo: memFree=21347500/32951124 swapFree=67111528/67111528
[pid=27014] ppid=27012 vsize=3120 CPUtime=0.1 cores=4,6
/proc/27014/stat : 27014 (MultiFlip) R 27012 27014 26496 0 -1 4202496 402 0 0 0 10 0 0 0 25 0 1 0 268361502 3194880 340 33554432000 134512640 134540672 4290953360 18446744073709551615 134523874 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/27014/statm: 780 340 220 7 0 137 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 3120

Child status: 10
Real time (s): 0.111287
CPU time (s): 0.110982
CPU user time (s): 0.109983
CPU system time (s): 0.000999
CPU usage (%): 99.7259
Max. virtual memory (cumulated for all children) (KiB): 3120

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.109983
system time used= 0.000999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 428
page faults= 0
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 6
involuntary context switches= 2

runsolver used 0.000999 second user time and 0.004999 second system time

The end

Launcher Data 

Begin job on node147 at 2011-04-02 17:50:56
IDJOB=3096339
IDBENCH=83021
IDSOLVER=1523
FILE ID=node147/3096339-1301759456
RUNJOBID= node147-1301756850-26515
PBS_JOBID= 12841062
Free space on /tmp= 71756 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v800-c3408-S902286199-017.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096339-1301759456/watcher-3096339-1301759456 -o /tmp/evaluation-result-3096339-1301759456/solver-3096339-1301759456 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096339-1301759456.cnf

TIME LIMIT= 2400 seconds
MEMORY LIMIT= 7680 MiB
NBCORE= 2

MD5SUM BENCH= 598e5ac0f35fb3d353f44669087059bc
RANDOM SEED=1409792813

node147.alineos.net Linux 2.6.18-164.el5 #1 SMP Thu Sep 3 03:28:30 EDT 2009

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.836
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5333.67
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.836
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 16
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 2
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.836
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 2
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.82
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 3
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.836
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 18
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 4
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.836
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 4
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.82
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 5
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.836
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 20
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.76
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 6
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.836
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 6
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.82
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 7
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.836
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 22
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32951124 kB
MemFree:      21347524 kB
Buffers:        358388 kB
Cached:       10909148 kB
SwapCached:          0 kB
Active:        7078672 kB
Inactive:      4256608 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      21347524 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:              16 kB
Writeback:           0 kB
AnonPages:       67248 kB
Mapped:          16100 kB
Slab:           205700 kB
PageTables:       5132 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS:   260788 kB
VmallocTotal: 34359738367 kB
VmallocUsed:    296008 kB
VmallocChunk: 34359440975 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 71756 MiB
End job on node147 at 2011-04-02 17:50:56