Trace number 3096262

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 0.100983 0.103218

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v800-c3408-S1536861174-069.SATISFIABLE.cnf
MD5SUMb9f30e687453978167416852673e8ddb
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.027994
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 

0.09/0.10	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.09/0.10	c input CNF file=HOME/instance-3096262-1301757957.cnf 
0.09/0.10	c var#=800 clause#=3408 
0.09/0.10	c clause#=3408 var#=800 ratio=4 
0.09/0.10	c Unsat#=         3 flip#=     11186 
0.09/0.10	c Unsat#=         2 flip#=     27498 
0.09/0.10	c Unsat#=         1 flip#=     28054 
0.09/0.10	c Unsat#=         0 flip#=     64651 
0.09/0.10	c try 1-th flip# 64651
0.09/0.10	c A solution is found
0.09/0.10	c verified 
0.09/0.10	s SATISFIABLE
0.09/0.10	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 
0.09/0.10	v 0
0.09/0.10	c Done (Running cputime is 0.092 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-3096262-1301757957/watcher-3096262-1301757957 -o /tmp/evaluation-result-3096262-1301757957/solver-3096262-1301757957 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096262-1301757957.cnf 

running on 2 cores: 1,3

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: 3.76 3.95 3.90 5/182 13508
/proc/meminfo: memFree=22344312/32950928 swapFree=67111528/67111528
[pid=13508] ppid=13506 vsize=2992 CPUtime=0 cores=1,3
/proc/13508/stat : 13508 (MultiFlip) R 13506 13508 13313 0 -1 4202496 340 0 0 0 0 0 0 0 25 0 1 0 287394463 3063808 279 33554432000 134512640 134540672 4293298864 18446744073709551615 10171900 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/13508/statm: 748 279 215 7 0 105 0

[startup+0.048027 s]
/proc/loadavg: 3.76 3.95 3.90 5/182 13508
/proc/meminfo: memFree=22344312/32950928 swapFree=67111528/67111528
[pid=13508] ppid=13506 vsize=3120 CPUtime=0.04 cores=1,3
/proc/13508/stat : 13508 (MultiFlip) R 13506 13508 13313 0 -1 4202496 394 0 0 0 4 0 0 0 25 0 1 0 287394463 3194880 332 33554432000 134512640 134540672 4293298864 18446744073709551615 134524754 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/13508/statm: 780 332 219 7 0 137 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 3120

[startup+0.101019 s]
/proc/loadavg: 3.76 3.95 3.90 5/182 13508
/proc/meminfo: memFree=22344312/32950928 swapFree=67111528/67111528
[pid=13508] ppid=13506 vsize=3324 CPUtime=0.09 cores=1,3
/proc/13508/stat : 13508 (MultiFlip) R 13506 13508 13313 0 -1 4202496 409 0 0 0 9 0 0 0 25 0 1 0 287394463 3403776 347 33554432000 134512640 134540672 4293298864 18446744073709551615 10051512 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/13508/statm: 831 347 222 7 0 188 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3324

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

Child status: 10
Real time (s): 0.103218
CPU time (s): 0.100983
CPU user time (s): 0.099984
CPU system time (s): 0.000999
CPU usage (%): 97.8347
Max. virtual memory (cumulated for all children) (KiB): 3324

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.099984
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= 429
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= 12
involuntary context switches= 2

runsolver used 0.001999 second user time and 0.002999 second system time

The end

Launcher Data 

Begin job on node120 at 2011-04-02 17:25:57
IDJOB=3096262
IDBENCH=82944
IDSOLVER=1523
FILE ID=node120/3096262-1301757957
RUNJOBID= node120-1301756655-13333
PBS_JOBID= 12841056
Free space on /tmp= 71760 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v800-c3408-S1536861174-069.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096262-1301757957/watcher-3096262-1301757957 -o /tmp/evaluation-result-3096262-1301757957/solver-3096262-1301757957 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096262-1301757957.cnf

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

MD5SUM BENCH= b9f30e687453978167416852673e8ddb
RANDOM SEED=2006648199

node120.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		: 2666.809
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	: 5333.61
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		: 2666.809
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	: 5226.07
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		: 2666.809
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		: 2666.809
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		: 2666.809
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	: 5332.78
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		: 2666.809
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	: 5332.75
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		: 2666.809
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		: 2666.809
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:     32950928 kB
MemFree:      22344576 kB
Buffers:        352692 kB
Cached:        9915776 kB
SwapCached:          0 kB
Active:        7342608 kB
Inactive:      2991884 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32950928 kB
LowFree:      22344576 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:              16 kB
Writeback:           0 kB
AnonPages:       65948 kB
Mapped:          16304 kB
Slab:           207824 kB
PageTables:       5164 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83586992 kB
Committed_AS:   242536 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= 71760 MiB
End job on node120 at 2011-04-02 17:25:57