Trace number 3096054

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 0.164974 0.165337

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v800-c3408-S1631205309-024.SATISFIABLE.cnf
MD5SUM2e95b09b89f7d260e53f8f199a98d276
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.05799
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 

0.09/0.16	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.09/0.16	c input CNF file=HOME/instance-3096054-1301752484.cnf 
0.09/0.16	c var#=800 clause#=3408 
0.09/0.16	c clause#=3408 var#=800 ratio=4 
0.09/0.16	c Unsat#=         3 flip#=      5644 
0.09/0.16	c Unsat#=         2 flip#=     41940 
0.09/0.16	c Unsat#=         1 flip#=    133500 
0.09/0.16	c Unsat#=         0 flip#=    133733 
0.09/0.16	c try 1-th flip# 133733
0.09/0.16	c A solution is found
0.09/0.16	c verified 
0.09/0.16	s SATISFIABLE
0.09/0.16	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 
0.09/0.16	v 0
0.09/0.16	c Done (Running cputime is 0.155 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-3096054-1301752484/watcher-3096054-1301752484 -o /tmp/evaluation-result-3096054-1301752484/solver-3096054-1301752484 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096054-1301752484.cnf 

running on 2 cores: 0,2

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: 4.00 4.00 3.91 4/189 12387
/proc/meminfo: memFree=22240836/32950928 swapFree=67111528/67111528
[pid=12387] ppid=12385 vsize=3120 CPUtime=0 cores=0,2
/proc/12387/stat : 12387 (MultiFlip) R 12385 12387 11795 0 -1 4202496 366 0 0 0 0 0 0 0 25 0 1 0 286847190 3194880 305 33554432000 134512640 134540672 4287555600 18446744073709551615 134538584 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/12387/statm: 780 305 217 7 0 137 0

[startup+0.100746 s]
/proc/loadavg: 4.00 4.00 3.91 4/189 12387
/proc/meminfo: memFree=22240836/32950928 swapFree=67111528/67111528
[pid=12387] ppid=12385 vsize=3120 CPUtime=0.09 cores=0,2
/proc/12387/stat : 12387 (MultiFlip) R 12385 12387 11795 0 -1 4202496 402 0 0 0 9 0 0 0 25 0 1 0 286847190 3194880 341 33554432000 134512640 134540672 4287555600 18446744073709551615 134523405 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/12387/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+0.100746 s]
/proc/loadavg: 4.00 4.00 3.91 4/189 12387
/proc/meminfo: memFree=22240836/32950928 swapFree=67111528/67111528
[pid=12387] ppid=12385 vsize=3120 CPUtime=0.09 cores=0,2
/proc/12387/stat : 12387 (MultiFlip) R 12385 12387 11795 0 -1 4202496 402 0 0 0 9 0 0 0 25 0 1 0 286847190 3194880 341 33554432000 134512640 134540672 4287555600 18446744073709551615 134523405 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/12387/statm: 780 341 220 7 0 137 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3120

Child status: 10
Real time (s): 0.165337
CPU time (s): 0.164974
CPU user time (s): 0.162975
CPU system time (s): 0.001999
CPU usage (%): 99.7804
Max. virtual memory (cumulated for all children) (KiB): 3120

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.162975
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= 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= 3

runsolver used 0.004999 second user time and 0.001999 second system time

The end

Launcher Data 

Begin job on node122 at 2011-04-02 15:54:44
IDJOB=3096054
IDBENCH=82736
IDSOLVER=1523
FILE ID=node122/3096054-1301752484
RUNJOBID= node122-1301748570-11813
PBS_JOBID= 12841015
Free space on /tmp= 71948 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v800-c3408-S1631205309-024.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096054-1301752484/watcher-3096054-1301752484 -o /tmp/evaluation-result-3096054-1301752484/solver-3096054-1301752484 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096054-1301752484.cnf

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

MD5SUM BENCH= 2e95b09b89f7d260e53f8f199a98d276
RANDOM SEED=1288898419

node122.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		: 2666.820
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	: 5333.64
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		: 2666.820
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		: 2666.820
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		: 2666.820
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	: 5332.83
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		: 2666.820
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	: 5332.75
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		: 2666.820
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		: 2666.820
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		: 2666.820
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	: 5332.97
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32950928 kB
MemFree:      22240868 kB
Buffers:        343820 kB
Cached:        9997896 kB
SwapCached:          0 kB
Active:        6826856 kB
Inactive:      3627648 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32950928 kB
LowFree:      22240868 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:              28 kB
Writeback:           0 kB
AnonPages:      111956 kB
Mapped:          16316 kB
Slab:           191708 kB
PageTables:       4520 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83586992 kB
Committed_AS:   298732 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= 71948 MiB
End job on node122 at 2011-04-02 15:54:44