Trace number 3096419

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 0.072988 0.0741091

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v800-c3408-S91768321-029.SATISFIABLE.cnf
MD5SUMa8d280a0ad5a42e6946605bb6356e226
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.012998
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 

0.03/0.07	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.03/0.07	c input CNF file=HOME/instance-3096419-1301761086.cnf 
0.03/0.07	c var#=800 clause#=3408 
0.03/0.07	c clause#=3408 var#=800 ratio=4 
0.03/0.07	c Unsat#=         3 flip#=      6015 
0.03/0.07	c Unsat#=         2 flip#=     11023 
0.03/0.07	c Unsat#=         1 flip#=     15035 
0.03/0.07	c Unsat#=         0 flip#=     16296 
0.03/0.07	c try 1-th flip# 16296
0.03/0.07	c A solution is found
0.03/0.07	c verified 
0.03/0.07	s SATISFIABLE
0.03/0.07	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 
0.03/0.07	v 0
0.03/0.07	c Done (Running cputime is 0.065 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-3096419-1301761086/watcher-3096419-1301761086 -o /tmp/evaluation-result-3096419-1301761086/solver-3096419-1301761086 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096419-1301761086.cnf 

running on 2 cores: 5,7

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: 1.56 1.93 2.48 5/183 13399
/proc/meminfo: memFree=18485760/32950928 swapFree=67111528/67111528
[pid=13399] ppid=13397 vsize=3120 CPUtime=0 cores=5,7
/proc/13399/stat : 13399 (MultiFlip) R 13397 13399 11923 0 -1 4202496 365 0 0 0 0 0 0 0 22 0 1 0 366339220 3194880 304 33554432000 134512640 134540672 4291034512 18446744073709551615 134538698 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/13399/statm: 780 304 217 7 0 137 0

[startup+0.0345071 s]
/proc/loadavg: 1.56 1.93 2.48 5/183 13399
/proc/meminfo: memFree=18485760/32950928 swapFree=67111528/67111528
[pid=13399] ppid=13397 vsize=3120 CPUtime=0.03 cores=5,7
/proc/13399/stat : 13399 (MultiFlip) R 13397 13399 11923 0 -1 4202496 392 0 0 0 3 0 0 0 22 0 1 0 366339220 3194880 331 33554432000 134512640 134540672 4291034512 18446744073709551615 134524691 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/13399/statm: 780 331 219 7 0 137 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 3120

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

[startup+0.0345071 s]
/proc/loadavg: 1.56 1.93 2.48 5/183 13399
/proc/meminfo: memFree=18485760/32950928 swapFree=67111528/67111528
[pid=13399] ppid=13397 vsize=3120 CPUtime=0.03 cores=5,7
/proc/13399/stat : 13399 (MultiFlip) R 13397 13399 11923 0 -1 4202496 392 0 0 0 3 0 0 0 22 0 1 0 366339220 3194880 331 33554432000 134512640 134540672 4291034512 18446744073709551615 134524691 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/13399/statm: 780 331 219 7 0 137 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 3120

Child status: 10
Real time (s): 0.0741091
CPU time (s): 0.072988
CPU user time (s): 0.072988
CPU system time (s): 0
CPU usage (%): 98.4873
Max. virtual memory (cumulated for all children) (KiB): 3120

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.072988
system time used= 0
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 427
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= 0

runsolver used 0.002999 second user time and 0.003999 second system time

The end

Launcher Data 

Begin job on node115 at 2011-04-02 18:18:06
IDJOB=3096419
IDBENCH=83101
IDSOLVER=1523
FILE ID=node115/3096419-1301761086
RUNJOBID= node115-1301761085-13371
PBS_JOBID= 12841079
Free space on /tmp= 71372 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v800-c3408-S91768321-029.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096419-1301761086/watcher-3096419-1301761086 -o /tmp/evaluation-result-3096419-1301761086/solver-3096419-1301761086 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096419-1301761086.cnf

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

MD5SUM BENCH= a8d280a0ad5a42e6946605bb6356e226
RANDOM SEED=1394432535

node115.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		: 2666.811
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	: 5333.62
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		: 2666.811
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	: 5226.15
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		: 2666.811
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	: 5332.75
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		: 2666.811
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		: 2666.811
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	: 5332.77
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		: 2666.811
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	: 5332.74
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		: 2666.811
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	: 5332.75
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		: 2666.811
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	: 5332.74
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32950928 kB
MemFree:      18486104 kB
Buffers:        398352 kB
Cached:       13696892 kB
SwapCached:          0 kB
Active:        9242860 kB
Inactive:      4917172 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32950928 kB
LowFree:      18486104 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:             156 kB
Writeback:           0 kB
AnonPages:       63952 kB
Mapped:          15788 kB
Slab:           241400 kB
PageTables:       4736 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83586992 kB
Committed_AS:   218776 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= 71372 MiB
End job on node115 at 2011-04-02 18:18:06