Trace number 3096202

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 1.18982 1.19145

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v750-c3195-S576842028-023.SATISFIABLE.cnf
MD5SUMa7a611663d2f029393d16aacd4e48364
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.066989
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 

1.10/1.19	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
1.10/1.19	c input CNF file=HOME/instance-3096202-1301754511.cnf 
1.10/1.19	c var#=750 clause#=3195 
1.10/1.19	c clause#=3195 var#=750 ratio=4 
1.10/1.19	c Unsat#=         3 flip#=     26322 
1.10/1.19	c Unsat#=         2 flip#=     47233 
1.10/1.19	c Unsat#=         1 flip#=     47254 
1.10/1.19	c Unsat#=         0 flip#=   2018741 
1.10/1.19	c try 1-th flip# 2018741
1.10/1.19	c A solution is found
1.10/1.19	c verified 
1.10/1.19	s SATISFIABLE
1.10/1.19	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 
1.10/1.19	v 0
1.10/1.19	c Done (Running cputime is 1.182 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-3096202-1301754511/watcher-3096202-1301754511 -o /tmp/evaluation-result-3096202-1301754511/solver-3096202-1301754511 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096202-1301754511.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: 3.95 3.99 3.97 4/189 18064
/proc/meminfo: memFree=20081048/32951124 swapFree=67111528/67111528
[pid=18064] ppid=18062 vsize=3112 CPUtime=0 cores=5,7
/proc/18064/stat : 18064 (MultiFlip) R 18062 18064 16916 0 -1 4202496 361 0 0 0 0 0 0 0 25 0 1 0 267866444 3186688 300 33554432000 134512640 134540672 4292822304 18446744073709551615 134538512 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/18064/statm: 778 300 217 7 0 135 0

[startup+0.0515519 s]
/proc/loadavg: 3.95 3.99 3.97 4/189 18064
/proc/meminfo: memFree=20081048/32951124 swapFree=67111528/67111528
[pid=18064] ppid=18062 vsize=3112 CPUtime=0.04 cores=5,7
/proc/18064/stat : 18064 (MultiFlip) R 18062 18064 16916 0 -1 4202496 387 0 0 0 4 0 0 0 25 0 1 0 267866444 3186688 326 33554432000 134512640 134540672 4292822304 18446744073709551615 134524719 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/18064/statm: 778 326 219 7 0 135 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 3112

[startup+0.100544 s]
/proc/loadavg: 3.95 3.99 3.97 4/189 18064
/proc/meminfo: memFree=20081048/32951124 swapFree=67111528/67111528
[pid=18064] ppid=18062 vsize=3112 CPUtime=0.09 cores=5,7
/proc/18064/stat : 18064 (MultiFlip) R 18062 18064 16916 0 -1 4202496 397 0 0 0 9 0 0 0 25 0 1 0 267866444 3186688 336 33554432000 134512640 134540672 4292822304 18446744073709551615 134522823 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/18064/statm: 778 336 220 7 0 135 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3112

[startup+0.300519 s]
/proc/loadavg: 3.95 3.99 3.97 4/189 18064
/proc/meminfo: memFree=20081048/32951124 swapFree=67111528/67111528
[pid=18064] ppid=18062 vsize=3112 CPUtime=0.29 cores=5,7
/proc/18064/stat : 18064 (MultiFlip) R 18062 18064 16916 0 -1 4202496 397 0 0 0 29 0 0 0 25 0 1 0 267866444 3186688 336 33554432000 134512640 134540672 4292822304 18446744073709551615 134523579 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/18064/statm: 778 336 220 7 0 135 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 3112

[startup+0.700436 s]
/proc/loadavg: 3.95 3.99 3.97 4/189 18064
/proc/meminfo: memFree=20081048/32951124 swapFree=67111528/67111528
[pid=18064] ppid=18062 vsize=3112 CPUtime=0.69 cores=5,7
/proc/18064/stat : 18064 (MultiFlip) R 18062 18064 16916 0 -1 4202496 397 0 0 0 69 0 0 0 25 0 1 0 267866444 3186688 336 33554432000 134512640 134540672 4292822304 18446744073709551615 134523607 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/18064/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+1.10636 s]
/proc/loadavg: 3.95 3.99 3.97 5/190 18065
/proc/meminfo: memFree=20080676/32951124 swapFree=67111528/67111528
[pid=18064] ppid=18062 vsize=3112 CPUtime=1.1 cores=5,7
/proc/18064/stat : 18064 (MultiFlip) R 18062 18064 16916 0 -1 4202496 397 0 0 0 110 0 0 0 25 0 1 0 267866444 3186688 336 33554432000 134512640 134540672 4292822304 18446744073709551615 134526567 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/18064/statm: 778 336 220 7 0 135 0
Current children cumulated CPU time (s) 1.1
Current children cumulated vsize (KiB) 3112

Child status: 10
Real time (s): 1.19145
CPU time (s): 1.18982
CPU user time (s): 1.18782
CPU system time (s): 0.001999
CPU usage (%): 99.8633
Max. virtual memory (cumulated for all children) (KiB): 3112

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.18782
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= 421
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= 3

runsolver used 0.003999 second user time and 0.007998 second system time

The end

Launcher Data 

Begin job on node140 at 2011-04-02 16:28:31
IDJOB=3096202
IDBENCH=82884
IDSOLVER=1523
FILE ID=node140/3096202-1301754511
RUNJOBID= node140-1301748572-16937
PBS_JOBID= 12840998
Free space on /tmp= 71528 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v750-c3195-S576842028-023.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096202-1301754511/watcher-3096202-1301754511 -o /tmp/evaluation-result-3096202-1301754511/solver-3096202-1301754511 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096202-1301754511.cnf

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

MD5SUM BENCH= a7a611663d2f029393d16aacd4e48364
RANDOM SEED=1432770746

node140.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		: 2666.833
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		: 2666.833
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	: 5226.14
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		: 2666.833
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		: 2666.833
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	: 5332.77
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		: 2666.833
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		: 2666.833
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		: 2666.833
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		: 2666.833
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	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32951124 kB
MemFree:      20081188 kB
Buffers:        363028 kB
Cached:       12160288 kB
SwapCached:          0 kB
Active:        7457448 kB
Inactive:      5133972 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      20081188 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:              20 kB
Writeback:           0 kB
AnonPages:       68012 kB
Mapped:          16152 kB
Slab:           213580 kB
PageTables:       5224 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS:   252944 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= 71528 MiB
End job on node140 at 2011-04-02 16:28:32