Trace number 3096418

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 0.925858 0.925491

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v750-c3195-S1115406553-014.SATISFIABLE.cnf
MD5SUM986ca0416a6ea10fb33d16d3e5ba2568
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.015997
Satisfiable
(Un)Satisfiability was proved
Number of variables750
Number of clauses3195
Sum of the clauses size9585
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 33195
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.89/0.92	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.89/0.92	c input CNF file=HOME/instance-3096418-1301761085.cnf 
0.89/0.92	c var#=750 clause#=3195 
0.89/0.92	c clause#=3195 var#=750 ratio=4 
0.89/0.92	c Unsat#=         3 flip#=     12395 
0.89/0.92	c Unsat#=         2 flip#=     35116 
0.89/0.92	c Unsat#=         1 flip#=     96336 
0.89/0.92	c Unsat#=         0 flip#=   1544411 
0.89/0.92	c try 1-th flip# 1544411
0.89/0.92	c A solution is found
0.89/0.92	c verified 
0.89/0.92	s SATISFIABLE
0.89/0.92	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 
0.89/0.92	v 0
0.89/0.92	c Done (Running cputime is 0.917 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-3096418-1301761085/watcher-3096418-1301761085 -o /tmp/evaluation-result-3096418-1301761085/solver-3096418-1301761085 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096418-1301761085.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: 1.56 1.93 2.48 4/179 13393
/proc/meminfo: memFree=18486484/32950928 swapFree=67111528/67111528
[pid=13393] ppid=13391 vsize=3112 CPUtime=0 cores=4,6
/proc/13393/stat : 13393 (MultiFlip) R 13391 13393 11923 0 -1 4202496 362 0 0 0 0 0 0 0 18 0 1 0 366339219 3186688 300 33554432000 134512640 134540672 4290308096 18446744073709551615 134538612 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/13393/statm: 778 300 217 7 0 135 0

[startup+0.034647 s]
/proc/loadavg: 1.56 1.93 2.48 4/179 13393
/proc/meminfo: memFree=18486484/32950928 swapFree=67111528/67111528
[pid=13393] ppid=13391 vsize=3112 CPUtime=0.03 cores=4,6
/proc/13393/stat : 13393 (MultiFlip) R 13391 13393 11923 0 -1 4202496 388 0 0 0 3 0 0 0 18 0 1 0 366339219 3186688 326 33554432000 134512640 134540672 4290308096 18446744073709551615 134524749 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/13393/statm: 778 326 219 7 0 135 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 3112

[startup+0.100634 s]
/proc/loadavg: 1.56 1.93 2.48 4/179 13393
/proc/meminfo: memFree=18486484/32950928 swapFree=67111528/67111528
[pid=13393] ppid=13391 vsize=3112 CPUtime=0.09 cores=4,6
/proc/13393/stat : 13393 (MultiFlip) R 13391 13393 11923 0 -1 4202496 398 0 0 0 9 0 0 0 18 0 1 0 366339219 3186688 336 33554432000 134512640 134540672 4290308096 18446744073709551615 134523411 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/13393/statm: 778 336 220 7 0 135 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3112

[startup+0.300594 s]
/proc/loadavg: 1.56 1.93 2.48 4/179 13393
/proc/meminfo: memFree=18486484/32950928 swapFree=67111528/67111528
[pid=13393] ppid=13391 vsize=3112 CPUtime=0.29 cores=4,6
/proc/13393/stat : 13393 (MultiFlip) R 13391 13393 11923 0 -1 4202496 398 0 0 0 29 0 0 0 18 0 1 0 366339219 3186688 336 33554432000 134512640 134540672 4290308096 18446744073709551615 134529404 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/13393/statm: 778 336 220 7 0 135 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 3112

[startup+0.700517 s]
/proc/loadavg: 1.56 1.93 2.48 4/179 13393
/proc/meminfo: memFree=18486484/32950928 swapFree=67111528/67111528
[pid=13393] ppid=13391 vsize=3112 CPUtime=0.69 cores=4,6
/proc/13393/stat : 13393 (MultiFlip) R 13391 13393 11923 0 -1 4202496 398 0 0 0 69 0 0 0 18 0 1 0 366339219 3186688 336 33554432000 134512640 134540672 4290308096 18446744073709551615 134523884 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/13393/statm: 778 336 220 7 0 135 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 3112

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

[startup+0.900489 s]
/proc/loadavg: 1.56 1.93 2.48 4/179 13393
/proc/meminfo: memFree=18486484/32950928 swapFree=67111528/67111528
[pid=13393] ppid=13391 vsize=3112 CPUtime=0.89 cores=4,6
/proc/13393/stat : 13393 (MultiFlip) R 13391 13393 11923 0 -1 4202496 398 0 0 0 89 0 0 0 19 0 1 0 366339219 3186688 336 33554432000 134512640 134540672 4290308096 18446744073709551615 134530845 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/13393/statm: 778 336 220 7 0 135 0
Current children cumulated CPU time (s) 0.89
Current children cumulated vsize (KiB) 3112

Child status: 10
Real time (s): 0.925491
CPU time (s): 0.925858
CPU user time (s): 0.923859
CPU system time (s): 0.001999
CPU usage (%): 100.04
Max. virtual memory (cumulated for all children) (KiB): 3112

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.923859
system time used= 0.001999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 422
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= 19
involuntary context switches= 3

runsolver used 0.003999 second user time and 0.006998 second system time

The end

Launcher Data 

Begin job on node115 at 2011-04-02 18:18:06
IDJOB=3096418
IDBENCH=83100
IDSOLVER=1523
FILE ID=node115/3096418-1301761085
RUNJOBID= node115-1301761085-13369
PBS_JOBID= 12841079
Free space on /tmp= 71372 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v750-c3195-S1115406553-014.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096418-1301761085/watcher-3096418-1301761085 -o /tmp/evaluation-result-3096418-1301761085/solver-3096418-1301761085 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096418-1301761085.cnf

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

MD5SUM BENCH= 986ca0416a6ea10fb33d16d3e5ba2568
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:      18486392 kB
Buffers:        398348 kB
Cached:       13696896 kB
SwapCached:          0 kB
Active:        9241908 kB
Inactive:      4917120 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32950928 kB
LowFree:      18486392 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:             156 kB
Writeback:           0 kB
AnonPages:       63564 kB
Mapped:          15012 kB
Slab:           241400 kB
PageTables:       4736 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83586992 kB
Committed_AS:   200820 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 18:18:07