Trace number 3096190

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 0.25396 0.256159

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v800-c3408-S1534711423-054.SATISFIABLE.cnf
MD5SUMa512a4806a6c9d511a2d57127db8f60a
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.077987
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 

0.19/0.25	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.19/0.25	c input CNF file=HOME/instance-3096190-1301754282.cnf 
0.19/0.25	c var#=800 clause#=3408 
0.19/0.25	c clause#=3408 var#=800 ratio=4 
0.19/0.25	c Unsat#=         3 flip#=     55377 
0.19/0.25	c Unsat#=         2 flip#=     56199 
0.19/0.25	c Unsat#=         1 flip#=     82456 
0.19/0.25	c Unsat#=         0 flip#=    314524 
0.19/0.25	c try 1-th flip# 314524
0.19/0.25	c A solution is found
0.19/0.25	c verified 
0.19/0.25	s SATISFIABLE
0.19/0.25	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 
0.19/0.25	v 0
0.19/0.25	c Done (Running cputime is 0.244 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-3096190-1301754282/watcher-3096190-1301754282 -o /tmp/evaluation-result-3096190-1301754282/solver-3096190-1301754282 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096190-1301754282.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: 3.92 3.98 3.94 6/187 16317
/proc/meminfo: memFree=21699340/32951132 swapFree=67111528/67111528
[pid=16317] ppid=16315 vsize=2992 CPUtime=0 cores=1,3
/proc/16317/stat : 16317 (MultiFlip) R 16315 16317 15364 0 -1 4202496 337 0 0 0 0 0 0 0 25 0 1 0 287027863 3063808 276 33554432000 134512640 134540672 4289422960 18446744073709551615 5453308 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/16317/statm: 748 276 215 7 0 105 0

[startup+0.080086 s]
/proc/loadavg: 3.92 3.98 3.94 6/187 16317
/proc/meminfo: memFree=21699340/32951132 swapFree=67111528/67111528
[pid=16317] ppid=16315 vsize=3120 CPUtime=0.07 cores=1,3
/proc/16317/stat : 16317 (MultiFlip) R 16315 16317 15364 0 -1 4202496 403 0 0 0 7 0 0 0 25 0 1 0 287027863 3194880 341 33554432000 134512640 134540672 4289422960 18446744073709551615 134523446 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/16317/statm: 780 341 220 7 0 137 0
Current children cumulated CPU time (s) 0.07
Current children cumulated vsize (KiB) 3120

[startup+0.101069 s]
/proc/loadavg: 3.92 3.98 3.94 6/187 16317
/proc/meminfo: memFree=21699340/32951132 swapFree=67111528/67111528
[pid=16317] ppid=16315 vsize=3120 CPUtime=0.09 cores=1,3
/proc/16317/stat : 16317 (MultiFlip) R 16315 16317 15364 0 -1 4202496 403 0 0 0 9 0 0 0 25 0 1 0 287027863 3194880 341 33554432000 134512640 134540672 4289422960 18446744073709551615 134522830 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/16317/statm: 780 341 220 7 0 137 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3120

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

[startup+0.201065 s]
/proc/loadavg: 3.92 3.98 3.94 6/187 16317
/proc/meminfo: memFree=21699340/32951132 swapFree=67111528/67111528
[pid=16317] ppid=16315 vsize=3120 CPUtime=0.19 cores=1,3
/proc/16317/stat : 16317 (MultiFlip) R 16315 16317 15364 0 -1 4202496 403 0 0 0 19 0 0 0 25 0 1 0 287027863 3194880 341 33554432000 134512640 134540672 4289422960 18446744073709551615 134523485 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/16317/statm: 780 341 220 7 0 137 0
Current children cumulated CPU time (s) 0.19
Current children cumulated vsize (KiB) 3120

Child status: 10
Real time (s): 0.256159
CPU time (s): 0.25396
CPU user time (s): 0.252961
CPU system time (s): 0.000999
CPU usage (%): 99.1415
Max. virtual memory (cumulated for all children) (KiB): 3120

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.252961
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= 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 node131 at 2011-04-02 16:24:42
IDJOB=3096190
IDBENCH=82872
IDSOLVER=1523
FILE ID=node131/3096190-1301754282
RUNJOBID= node131-1301748568-15384
PBS_JOBID= 12841006
Free space on /tmp= 71660 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v800-c3408-S1534711423-054.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096190-1301754282/watcher-3096190-1301754282 -o /tmp/evaluation-result-3096190-1301754282/solver-3096190-1301754282 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096190-1301754282.cnf

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

MD5SUM BENCH= a512a4806a6c9d511a2d57127db8f60a
RANDOM SEED=1020470578

node131.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		: 2666.830
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	: 5333.66
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		: 2666.830
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		: 2666.830
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	: 5332.83
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		: 2666.830
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		: 2666.830
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		: 2666.830
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		: 2666.830
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		: 2666.830
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:     32951132 kB
MemFree:      21699356 kB
Buffers:        352020 kB
Cached:       10568540 kB
SwapCached:          0 kB
Active:        6789132 kB
Inactive:      4200120 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951132 kB
LowFree:      21699356 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:               8 kB
Writeback:          12 kB
AnonPages:       68680 kB
Mapped:          16368 kB
Slab:           199296 kB
PageTables:       5332 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587092 kB
Committed_AS:   253092 kB
VmallocTotal: 34359738367 kB
VmallocUsed:    296000 kB
VmallocChunk: 34359440975 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 71660 MiB
End job on node131 at 2011-04-02 16:24:43