Trace number 3096134

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 0.554915 0.555465

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v700-c2982-S628307658-028.SATISFIABLE.cnf
MD5SUM0b3e0de9aa59dd098eea77ce3aaba6c9
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.031995
Satisfiable
(Un)Satisfiability was proved
Number of variables700
Number of clauses2982
Sum of the clauses size8946
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32982
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.49/0.55	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.49/0.55	c input CNF file=HOME/instance-3096134-1301753600.cnf 
0.49/0.55	c var#=700 clause#=2982 
0.49/0.55	c clause#=2982 var#=700 ratio=4 
0.49/0.55	c Unsat#=         3 flip#=      9534 
0.49/0.55	c Unsat#=         2 flip#=     29273 
0.49/0.55	c Unsat#=         1 flip#=    105429 
0.49/0.55	c Unsat#=         0 flip#=    915696 
0.49/0.55	c try 1-th flip# 915696
0.49/0.55	c A solution is found
0.49/0.55	c verified 
0.49/0.55	s SATISFIABLE
0.49/0.55	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 
0.49/0.55	v 0
0.49/0.55	c Done (Running cputime is 0.548 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-3096134-1301753600/watcher-3096134-1301753600 -o /tmp/evaluation-result-3096134-1301753600/solver-3096134-1301753600 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096134-1301753600.cnf 

running on 2 cores: 4,6

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 3.95 4/187 16134
/proc/meminfo: memFree=21699908/32951132 swapFree=67111528/67111528
[pid=16134] ppid=16132 vsize=2980 CPUtime=0 cores=4,6
/proc/16134/stat : 16134 (MultiFlip) R 16132 16134 15364 0 -1 4202496 361 0 0 0 0 0 0 0 25 0 1 0 286959665 3051520 299 33554432000 134512640 134540672 4294277504 18446744073709551615 134521424 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/16134/statm: 745 299 218 7 0 102 0

[startup+0.10118 s]
/proc/loadavg: 4.00 4.00 3.95 4/187 16134
/proc/meminfo: memFree=21699908/32951132 swapFree=67111528/67111528
[pid=16134] ppid=16132 vsize=3112 CPUtime=0.1 cores=4,6
/proc/16134/stat : 16134 (MultiFlip) R 16132 16134 15364 0 -1 4202496 392 0 0 0 10 0 0 0 25 0 1 0 286959665 3186688 330 33554432000 134512640 134540672 4294277504 18446744073709551615 134523976 0 0 4096 0 0 0 0 17 6 0 0 0
/proc/16134/statm: 778 330 220 7 0 135 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 3112

[startup+0.200177 s]
/proc/loadavg: 4.00 4.00 3.95 4/187 16134
/proc/meminfo: memFree=21699908/32951132 swapFree=67111528/67111528
[pid=16134] ppid=16132 vsize=3112 CPUtime=0.19 cores=4,6
/proc/16134/stat : 16134 (MultiFlip) R 16132 16134 15364 0 -1 4202496 392 0 0 0 19 0 0 0 25 0 1 0 286959665 3186688 330 33554432000 134512640 134540672 4294277504 18446744073709551615 134524145 0 0 4096 0 0 0 0 17 6 0 0 0
/proc/16134/statm: 778 330 220 7 0 135 0
Current children cumulated CPU time (s) 0.19
Current children cumulated vsize (KiB) 3112

[startup+0.300146 s]
/proc/loadavg: 4.00 4.00 3.95 4/187 16134
/proc/meminfo: memFree=21699908/32951132 swapFree=67111528/67111528
[pid=16134] ppid=16132 vsize=3112 CPUtime=0.29 cores=4,6
/proc/16134/stat : 16134 (MultiFlip) R 16132 16134 15364 0 -1 4202496 392 0 0 0 29 0 0 0 25 0 1 0 286959665 3186688 330 33554432000 134512640 134540672 4294277504 18446744073709551615 134524259 0 0 4096 0 0 0 0 17 6 0 0 0
/proc/16134/statm: 778 330 220 7 0 135 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 3112

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

[startup+0.40013 s]
/proc/loadavg: 4.00 4.00 3.95 4/187 16134
/proc/meminfo: memFree=21699908/32951132 swapFree=67111528/67111528
[pid=16134] ppid=16132 vsize=3112 CPUtime=0.39 cores=4,6
/proc/16134/stat : 16134 (MultiFlip) R 16132 16134 15364 0 -1 4202496 392 0 0 0 39 0 0 0 25 0 1 0 286959665 3186688 330 33554432000 134512640 134540672 4294277504 18446744073709551615 134529575 0 0 4096 0 0 0 0 17 6 0 0 0
/proc/16134/statm: 778 330 220 7 0 135 0
Current children cumulated CPU time (s) 0.39
Current children cumulated vsize (KiB) 3112

[startup+0.500124 s]
/proc/loadavg: 4.00 4.00 3.95 4/187 16134
/proc/meminfo: memFree=21699908/32951132 swapFree=67111528/67111528
[pid=16134] ppid=16132 vsize=3112 CPUtime=0.49 cores=4,6
/proc/16134/stat : 16134 (MultiFlip) R 16132 16134 15364 0 -1 4202496 392 0 0 0 49 0 0 0 25 0 1 0 286959665 3186688 330 33554432000 134512640 134540672 4294277504 18446744073709551615 134523184 0 0 4096 0 0 0 0 17 6 0 0 0
/proc/16134/statm: 778 330 220 7 0 135 0
Current children cumulated CPU time (s) 0.49
Current children cumulated vsize (KiB) 3112

Child status: 10
Real time (s): 0.555465
CPU time (s): 0.554915
CPU user time (s): 0.554915
CPU system time (s): 0
CPU usage (%): 99.901
Max. virtual memory (cumulated for all children) (KiB): 3112

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.554915
system time used= 0
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 415
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= 6

runsolver used 0.002999 second user time and 0.002999 second system time

The end

Launcher Data 

Begin job on node131 at 2011-04-02 16:13:20
IDJOB=3096134
IDBENCH=82816
IDSOLVER=1523
FILE ID=node131/3096134-1301753600
RUNJOBID= node131-1301748568-15383
PBS_JOBID= 12841006
Free space on /tmp= 71660 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v700-c2982-S628307658-028.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096134-1301753600/watcher-3096134-1301753600 -o /tmp/evaluation-result-3096134-1301753600/solver-3096134-1301753600 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096134-1301753600.cnf

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

MD5SUM BENCH= 0b3e0de9aa59dd098eea77ce3aaba6c9
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:      21700048 kB
Buffers:        351792 kB
Cached:       10568328 kB
SwapCached:          0 kB
Active:        6788304 kB
Inactive:      4200020 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951132 kB
LowFree:      21700048 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:              40 kB
Writeback:           0 kB
AnonPages:       68304 kB
Mapped:          16376 kB
Slab:           199196 kB
PageTables:       5244 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587092 kB
Committed_AS:   257284 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 16:13:21