Trace number 3096363

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 0.062989 0.0641761

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v650-c2769-S466707249-079.SATISFIABLE.cnf
MD5SUM5668e95cadc5ec51544c425c57e1c075
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.049991
Satisfiable
(Un)Satisfiability was proved
Number of variables650
Number of clauses2769
Sum of the clauses size8307
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32769
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.06/0.06	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.06/0.06	c input CNF file=HOME/instance-3096363-1301759753.cnf 
0.06/0.06	c var#=650 clause#=2769 
0.06/0.06	c clause#=2769 var#=650 ratio=4 
0.06/0.06	c Unsat#=         3 flip#=      9646 
0.06/0.06	c Unsat#=         2 flip#=      9727 
0.06/0.06	c Unsat#=         1 flip#=     12448 
0.06/0.06	c Unsat#=         0 flip#=     15723 
0.06/0.06	c try 1-th flip# 15723
0.06/0.06	c A solution is found
0.06/0.06	c verified 
0.06/0.06	s SATISFIABLE
0.06/0.06	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 
0.06/0.06	v 0
0.06/0.06	c Done (Running cputime is 0.056 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-3096363-1301759753/watcher-3096363-1301759753 -o /tmp/evaluation-result-3096363-1301759753/solver-3096363-1301759753 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096363-1301759753.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: 3.80 3.95 3.91 5/189 28421
/proc/meminfo: memFree=22670008/32951124 swapFree=67111528/67111528
[pid=28421] ppid=28419 vsize=2980 CPUtime=0 cores=1,3
/proc/28421/stat : 28421 (MultiFlip) R 28419 28421 27553 0 -1 4202496 354 0 0 0 0 0 0 0 25 0 1 0 287576011 3051520 293 33554432000 134512640 134540672 4289791616 18446744073709551615 134538698 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/28421/statm: 745 293 217 7 0 102 0

[startup+0.062559 s]
/proc/loadavg: 3.80 3.95 3.91 5/189 28421
/proc/meminfo: memFree=22670008/32951124 swapFree=67111528/67111528
[pid=28421] ppid=28419 vsize=3116 CPUtime=0.06 cores=1,3
/proc/28421/stat : 28421 (MultiFlip) R 28419 28421 27553 0 -1 4202496 391 0 0 0 6 0 0 0 25 0 1 0 287576011 3190784 330 33554432000 134512640 134540672 4289791616 18446744073709551615 11685695 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/28421/statm: 779 331 222 7 0 136 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 3116

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

[startup+0.062559 s]
/proc/loadavg: 3.80 3.95 3.91 5/189 28421
/proc/meminfo: memFree=22670008/32951124 swapFree=67111528/67111528
[pid=28421] ppid=28419 vsize=3116 CPUtime=0.06 cores=1,3
/proc/28421/stat : 28421 (MultiFlip) R 28419 28421 27553 0 -1 4202496 391 0 0 0 6 0 0 0 25 0 1 0 287576011 3190784 330 33554432000 134512640 134540672 4289791616 18446744073709551615 11685695 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/28421/statm: 779 331 222 7 0 136 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 3116

Child status: 10
Real time (s): 0.0641761
CPU time (s): 0.062989
CPU user time (s): 0.06199
CPU system time (s): 0.000999
CPU usage (%): 98.1503
Max. virtual memory (cumulated for all children) (KiB): 3116

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.06199
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= 408
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= 0

runsolver used 0.002999 second user time and 0.002999 second system time

The end

Launcher Data 

Begin job on node109 at 2011-04-02 17:55:53
IDJOB=3096363
IDBENCH=83045
IDSOLVER=1523
FILE ID=node109/3096363-1301759753
RUNJOBID= node109-1301757124-27573
PBS_JOBID= 12841080
Free space on /tmp= 72060 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v650-c2769-S466707249-079.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096363-1301759753/watcher-3096363-1301759753 -o /tmp/evaluation-result-3096363-1301759753/solver-3096363-1301759753 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096363-1301759753.cnf

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

MD5SUM BENCH= 5668e95cadc5ec51544c425c57e1c075
RANDOM SEED=245865994

node109.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		: 2666.809
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	: 5333.61
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		: 2666.809
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		: 2666.809
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		: 2666.809
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		: 2666.809
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		: 2666.809
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		: 2666.809
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	: 5332.82
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		: 2666.809
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:     32951124 kB
MemFree:      22670156 kB
Buffers:        345064 kB
Cached:        9604820 kB
SwapCached:          0 kB
Active:        5979076 kB
Inactive:      4037724 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      22670156 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:             920 kB
Writeback:           0 kB
AnonPages:       66916 kB
Mapped:          16176 kB
Slab:           201752 kB
PageTables:       5236 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS:   251224 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= 72060 MiB
End job on node109 at 2011-04-02 17:55:53