Trace number 3096234

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 0.159974 0.160658

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v600-c2556-S252359291-002.SATISFIABLE.cnf
MD5SUMe7d056c40976f07c31ebd30dc9590b89
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.009998
Satisfiable
(Un)Satisfiability was proved
Number of variables600
Number of clauses2556
Sum of the clauses size7668
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32556
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.09/0.16	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.09/0.16	c input CNF file=HOME/instance-3096234-1301757062.cnf 
0.09/0.16	c var#=600 clause#=2556 
0.09/0.16	c clause#=2556 var#=600 ratio=4 
0.09/0.16	c Unsat#=         3 flip#=      5443 
0.09/0.16	c Unsat#=         2 flip#=     14675 
0.09/0.16	c Unsat#=         1 flip#=     16475 
0.09/0.16	c Unsat#=         0 flip#=    212832 
0.09/0.16	c try 1-th flip# 212832
0.09/0.16	c A solution is found
0.09/0.16	c verified 
0.09/0.16	s SATISFIABLE
0.09/0.16	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 
0.09/0.16	v 0
0.09/0.16	c Done (Running cputime is 0.153 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-3096234-1301757062/watcher-3096234-1301757062 -o /tmp/evaluation-result-3096234-1301757062/solver-3096234-1301757062 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096234-1301757062.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: 3.68 3.90 3.65 4/179 15368
/proc/meminfo: memFree=21557460/32950928 swapFree=67111528/67111528
[pid=15368] ppid=15366 vsize=3112 CPUtime=0 cores=4,6
/proc/15368/stat : 15368 (MultiFlip) R 15366 15368 15327 0 -1 4202496 372 0 0 0 0 0 0 0 23 0 1 0 287304894 3186688 310 33554432000 134512640 134540672 4293184960 18446744073709551615 4650492 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/15368/statm: 778 310 219 7 0 135 0

[startup+0.085912 s]
/proc/loadavg: 3.68 3.90 3.65 4/179 15368
/proc/meminfo: memFree=21557460/32950928 swapFree=67111528/67111528
[pid=15368] ppid=15366 vsize=3112 CPUtime=0.08 cores=4,6
/proc/15368/stat : 15368 (MultiFlip) R 15366 15368 15327 0 -1 4202496 379 0 0 0 8 0 0 0 23 0 1 0 287304894 3186688 317 33554432000 134512640 134540672 4293184960 18446744073709551615 134523582 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/15368/statm: 778 317 220 7 0 135 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 3112

[startup+0.100912 s]
/proc/loadavg: 3.68 3.90 3.65 4/179 15368
/proc/meminfo: memFree=21557460/32950928 swapFree=67111528/67111528
[pid=15368] ppid=15366 vsize=3112 CPUtime=0.09 cores=4,6
/proc/15368/stat : 15368 (MultiFlip) R 15366 15368 15327 0 -1 4202496 379 0 0 0 9 0 0 0 23 0 1 0 287304894 3186688 317 33554432000 134512640 134540672 4293184960 18446744073709551615 134524227 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/15368/statm: 778 317 220 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): 0.160658
CPU time (s): 0.159974
CPU user time (s): 0.157975
CPU system time (s): 0.001999
CPU usage (%): 99.5743
Max. virtual memory (cumulated for all children) (KiB): 3112

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.157975
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= 401
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= 18
involuntary context switches= 6

runsolver used 0.001999 second user time and 0.003999 second system time

The end

Launcher Data 

Begin job on node126 at 2011-04-02 17:11:02
IDJOB=3096234
IDBENCH=82916
IDSOLVER=1523
FILE ID=node126/3096234-1301757062
RUNJOBID= node126-1301757062-15346
PBS_JOBID= 12841073
Free space on /tmp= 71692 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v600-c2556-S252359291-002.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096234-1301757062/watcher-3096234-1301757062 -o /tmp/evaluation-result-3096234-1301757062/solver-3096234-1301757062 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096234-1301757062.cnf

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

MD5SUM BENCH= e7d056c40976f07c31ebd30dc9590b89
RANDOM SEED=834208255

node126.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		: 2666.783
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	: 5333.56
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		: 2666.783
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		: 2666.783
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		: 2666.783
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	: 5332.74
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		: 2666.783
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	: 5332.80
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		: 2666.783
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		: 2666.783
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		: 2666.783
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	: 5332.76
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32950928 kB
MemFree:      21557748 kB
Buffers:        349108 kB
Cached:       10711248 kB
SwapCached:          0 kB
Active:        7240872 kB
Inactive:      3882500 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32950928 kB
LowFree:      21557748 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:             168 kB
Writeback:           0 kB
AnonPages:       62680 kB
Mapped:          14720 kB
Slab:           204476 kB
PageTables:       5768 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83586992 kB
Committed_AS:   198960 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= 71688 MiB
End job on node126 at 2011-04-02 17:11:02