Trace number 3096097

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 0.109982 0.110944

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v750-c3195-S1378008329-078.SATISFIABLE.cnf
MD5SUMd50cd6e15bea1958cfdf9785772f4ad7
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.015996
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 

0.09/0.11	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.09/0.11	c input CNF file=HOME/instance-3096097-1301753050.cnf 
0.09/0.11	c var#=750 clause#=3195 
0.09/0.11	c clause#=3195 var#=750 ratio=4 
0.09/0.11	c Unsat#=         3 flip#=     21234 
0.09/0.11	c Unsat#=         2 flip#=     21243 
0.09/0.11	c Unsat#=         1 flip#=     24000 
0.09/0.11	c Unsat#=         0 flip#=     84383 
0.09/0.11	c try 1-th flip# 84383
0.09/0.11	c A solution is found
0.09/0.11	c verified 
0.09/0.11	s SATISFIABLE
0.09/0.11	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 
0.09/0.11	v 0
0.09/0.11	c Done (Running cputime is 0.102 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-3096097-1301753050/watcher-3096097-1301753050 -o /tmp/evaluation-result-3096097-1301753050/solver-3096097-1301753050 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096097-1301753050.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: 4.00 4.00 3.93 4/189 16632
/proc/meminfo: memFree=22018484/32951124 swapFree=67111528/67111528
[pid=16632] ppid=16630 vsize=3112 CPUtime=0 cores=5,7
/proc/16632/stat : 16632 (MultiFlip) R 16630 16632 15854 0 -1 4202496 362 0 0 0 0 0 0 0 25 0 1 0 267720838 3186688 300 33554432000 134512640 134540672 4287813248 18446744073709551615 134538542 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/16632/statm: 778 300 217 7 0 135 0

[startup+0.0373011 s]
/proc/loadavg: 4.00 4.00 3.93 4/189 16632
/proc/meminfo: memFree=22018484/32951124 swapFree=67111528/67111528
[pid=16632] ppid=16630 vsize=3112 CPUtime=0.03 cores=5,7
/proc/16632/stat : 16632 (MultiFlip) R 16630 16632 15854 0 -1 4202496 388 0 0 0 3 0 0 0 25 0 1 0 267720838 3186688 326 33554432000 134512640 134540672 4287813248 18446744073709551615 134524704 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/16632/statm: 778 326 219 7 0 135 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 3112

[startup+0.10029 s]
/proc/loadavg: 4.00 4.00 3.93 4/189 16632
/proc/meminfo: memFree=22018484/32951124 swapFree=67111528/67111528
[pid=16632] ppid=16630 vsize=3112 CPUtime=0.09 cores=5,7
/proc/16632/stat : 16632 (MultiFlip) R 16630 16632 15854 0 -1 4202496 398 0 0 0 9 0 0 0 25 0 1 0 267720838 3186688 336 33554432000 134512640 134540672 4287813248 18446744073709551615 134524192 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/16632/statm: 778 336 220 7 0 135 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3112

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

Child status: 10
Real time (s): 0.110944
CPU time (s): 0.109982
CPU user time (s): 0.108983
CPU system time (s): 0.000999
CPU usage (%): 99.1329
Max. virtual memory (cumulated for all children) (KiB): 3112

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.108983
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= 423
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= 1

runsolver used 0.000999 second user time and 0.004999 second system time

The end

Launcher Data 

Begin job on node145 at 2011-04-02 16:04:10
IDJOB=3096097
IDBENCH=82779
IDSOLVER=1523
FILE ID=node145/3096097-1301753050
RUNJOBID= node145-1301748567-15875
PBS_JOBID= 12840994
Free space on /tmp= 72360 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v750-c3195-S1378008329-078.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096097-1301753050/watcher-3096097-1301753050 -o /tmp/evaluation-result-3096097-1301753050/solver-3096097-1301753050 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096097-1301753050.cnf

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

MD5SUM BENCH= d50cd6e15bea1958cfdf9785772f4ad7
RANDOM SEED=1919040661

node145.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		: 2666.786
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	: 5333.57
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		: 2666.786
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	: 5332.76
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		: 2666.786
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	: 5332.74
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		: 2666.786
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		: 2666.786
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	: 5332.82
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		: 2666.786
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		: 2666.786
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	: 5332.84
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		: 2666.786
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	: 5332.77
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32951124 kB
MemFree:      22018640 kB
Buffers:        356956 kB
Cached:       10251284 kB
SwapCached:          0 kB
Active:        6819384 kB
Inactive:      3855812 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      22018640 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:              28 kB
Writeback:           0 kB
AnonPages:       66840 kB
Mapped:          16156 kB
Slab:           191976 kB
PageTables:       5176 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS:   250636 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= 72360 MiB
End job on node145 at 2011-04-02 16:04:10