Trace number 3096173

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 0.924858 0.924929

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v750-c3195-S2050161601-088.SATISFIABLE.cnf
MD5SUM99cb8b7378c2be1a0d9a52d8a949ecd4
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.140977
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-3096173-1301753995.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#=     11816 
0.89/0.92	c Unsat#=         2 flip#=     56267 
0.89/0.92	c Unsat#=         1 flip#=    674357 
0.89/0.92	c Unsat#=         0 flip#=   1518779 
0.89/0.92	c try 1-th flip# 1518779
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 0.916 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-3096173-1301753995/watcher-3096173-1301753995 -o /tmp/evaluation-result-3096173-1301753995/solver-3096173-1301753995 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096173-1301753995.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: 4.02 4.01 3.93 4/189 24162
/proc/meminfo: memFree=20912592/32951124 swapFree=67111524/67111528
[pid=24162] ppid=24160 vsize=3112 CPUtime=0 cores=1,3
/proc/24162/stat : 24162 (MultiFlip) R 24160 24162 23275 0 -1 4202496 360 0 0 0 0 0 0 0 25 0 1 0 365629967 3186688 299 33554432000 134512640 134540672 4287909088 18446744073709551615 134538808 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/24162/statm: 778 299 217 7 0 135 0

[startup+0.0628111 s]
/proc/loadavg: 4.02 4.01 3.93 4/189 24162
/proc/meminfo: memFree=20912592/32951124 swapFree=67111524/67111528
[pid=24162] ppid=24160 vsize=3112 CPUtime=0.06 cores=1,3
/proc/24162/stat : 24162 (MultiFlip) R 24160 24162 23275 0 -1 4202496 386 0 0 0 6 0 0 0 25 0 1 0 365629967 3186688 325 33554432000 134512640 134540672 4287909088 18446744073709551615 134524781 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/24162/statm: 778 325 219 7 0 135 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 3112

[startup+0.100817 s]
/proc/loadavg: 4.02 4.01 3.93 4/189 24162
/proc/meminfo: memFree=20912592/32951124 swapFree=67111524/67111528
[pid=24162] ppid=24160 vsize=3112 CPUtime=0.09 cores=1,3
/proc/24162/stat : 24162 (MultiFlip) R 24160 24162 23275 0 -1 4202496 396 0 0 0 9 0 0 0 25 0 1 0 365629967 3186688 335 33554432000 134512640 134540672 4287909088 18446744073709551615 134524188 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/24162/statm: 778 335 220 7 0 135 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3112

[startup+0.300766 s]
/proc/loadavg: 4.02 4.01 3.93 4/189 24162
/proc/meminfo: memFree=20912592/32951124 swapFree=67111524/67111528
[pid=24162] ppid=24160 vsize=3112 CPUtime=0.29 cores=1,3
/proc/24162/stat : 24162 (MultiFlip) R 24160 24162 23275 0 -1 4202496 396 0 0 0 29 0 0 0 25 0 1 0 365629967 3186688 335 33554432000 134512640 134540672 4287909088 18446744073709551615 134524033 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/24162/statm: 778 335 220 7 0 135 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 3112

[startup+0.700696 s]
/proc/loadavg: 4.02 4.01 3.93 4/189 24162
/proc/meminfo: memFree=20912592/32951124 swapFree=67111524/67111528
[pid=24162] ppid=24160 vsize=3112 CPUtime=0.69 cores=1,3
/proc/24162/stat : 24162 (MultiFlip) R 24160 24162 23275 0 -1 4202496 396 0 0 0 69 0 0 0 25 0 1 0 365629967 3186688 335 33554432000 134512640 134540672 4287909088 18446744073709551615 134522937 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/24162/statm: 778 335 220 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+0.900659 s]
/proc/loadavg: 4.02 4.01 3.93 4/189 24162
/proc/meminfo: memFree=20912592/32951124 swapFree=67111524/67111528
[pid=24162] ppid=24160 vsize=3112 CPUtime=0.89 cores=1,3
/proc/24162/stat : 24162 (MultiFlip) R 24160 24162 23275 0 -1 4202496 396 0 0 0 89 0 0 0 25 0 1 0 365629967 3186688 335 33554432000 134512640 134540672 4287909088 18446744073709551615 134524163 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/24162/statm: 778 335 220 7 0 135 0
Current children cumulated CPU time (s) 0.89
Current children cumulated vsize (KiB) 3112

Child status: 10
Real time (s): 0.924929
CPU time (s): 0.924858
CPU user time (s): 0.922859
CPU system time (s): 0.001999
CPU usage (%): 99.9923
Max. virtual memory (cumulated for all children) (KiB): 3112

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.922859
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= 420
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= 12

runsolver used 0.004999 second user time and 0.006998 second system time

The end

Launcher Data 

Begin job on node111 at 2011-04-02 16:19:55
IDJOB=3096173
IDBENCH=82855
IDSOLVER=1523
FILE ID=node111/3096173-1301753995
RUNJOBID= node111-1301748572-23295
PBS_JOBID= 12841026
Free space on /tmp= 71244 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v750-c3195-S2050161601-088.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096173-1301753995/watcher-3096173-1301753995 -o /tmp/evaluation-result-3096173-1301753995/solver-3096173-1301753995 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096173-1301753995.cnf

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

MD5SUM BENCH= 99cb8b7378c2be1a0d9a52d8a949ecd4
RANDOM SEED=1680023605

node111.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		: 2666.849
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	: 5333.69
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		: 2666.849
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	: 5428.12
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		: 2666.849
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		: 2666.849
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	: 5332.86
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		: 2666.849
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		: 2666.849
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	: 5332.83
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		: 2666.849
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	: 5332.67
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		: 2666.849
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	: 5332.83
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32951124 kB
MemFree:      20912608 kB
Buffers:        349336 kB
Cached:       11326080 kB
SwapCached:          4 kB
Active:        7284708 kB
Inactive:      4459784 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      20912608 kB
SwapTotal:    67111528 kB
SwapFree:     67111524 kB
Dirty:             136 kB
Writeback:           0 kB
AnonPages:       69616 kB
Mapped:          16176 kB
Slab:           230520 kB
PageTables:       5244 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS:   255112 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= 71244 MiB
End job on node111 at 2011-04-02 16:19:56