Trace number 3096358

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 1.24681 1.24804

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v600-c2556-S1383380994-043.SATISFIABLE.cnf
MD5SUM016ccbb74f587730ed4815e028a75eb1
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.233964
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 

1.19/1.24	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
1.19/1.24	c input CNF file=HOME/instance-3096358-1301759737.cnf 
1.19/1.24	c var#=600 clause#=2556 
1.19/1.24	c clause#=2556 var#=600 ratio=4 
1.19/1.24	c Unsat#=         3 flip#=      3210 
1.19/1.24	c Unsat#=         2 flip#=      6525 
1.19/1.24	c Unsat#=         1 flip#=     10503 
1.19/1.24	c Unsat#=         0 flip#=   2065985 
1.19/1.24	c try 1-th flip# 2065985
1.19/1.24	c A solution is found
1.19/1.24	c verified 
1.19/1.24	s SATISFIABLE
1.19/1.24	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 
1.19/1.24	v 0
1.19/1.24	c Done (Running cputime is 1.239 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-3096358-1301759737/watcher-3096358-1301759737 -o /tmp/evaluation-result-3096358-1301759737/solver-3096358-1301759737 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096358-1301759737.cnf 

running on 2 cores: 0,2

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: 3.85 3.97 3.92 4/189 28284
/proc/meminfo: memFree=22670008/32951124 swapFree=67111528/67111528
[pid=28284] ppid=28282 vsize=2980 CPUtime=0 cores=0,2
/proc/28284/stat : 28284 (MultiFlip) R 28282 28284 27553 0 -1 4202496 350 0 0 0 0 0 0 0 25 0 1 0 287574482 3051520 289 33554432000 134512640 134540672 4289373328 18446744073709551615 134538614 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/28284/statm: 745 289 217 7 0 102 0

[startup+0.0738321 s]
/proc/loadavg: 3.85 3.97 3.92 4/189 28284
/proc/meminfo: memFree=22670008/32951124 swapFree=67111528/67111528
[pid=28284] ppid=28282 vsize=3112 CPUtime=0.07 cores=0,2
/proc/28284/stat : 28284 (MultiFlip) R 28282 28284 27553 0 -1 4202496 378 0 0 0 7 0 0 0 25 0 1 0 287574482 3186688 317 33554432000 134512640 134540672 4289373328 18446744073709551615 134526520 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/28284/statm: 778 317 220 7 0 135 0
Current children cumulated CPU time (s) 0.07
Current children cumulated vsize (KiB) 3112

[startup+0.100829 s]
/proc/loadavg: 3.85 3.97 3.92 4/189 28284
/proc/meminfo: memFree=22670008/32951124 swapFree=67111528/67111528
[pid=28284] ppid=28282 vsize=3112 CPUtime=0.09 cores=0,2
/proc/28284/stat : 28284 (MultiFlip) R 28282 28284 27553 0 -1 4202496 378 0 0 0 9 0 0 0 25 0 1 0 287574482 3186688 317 33554432000 134512640 134540672 4289373328 18446744073709551615 134523728 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/28284/statm: 778 317 220 7 0 135 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3112

[startup+0.300818 s]
/proc/loadavg: 3.85 3.97 3.92 4/189 28284
/proc/meminfo: memFree=22670008/32951124 swapFree=67111528/67111528
[pid=28284] ppid=28282 vsize=3112 CPUtime=0.29 cores=0,2
/proc/28284/stat : 28284 (MultiFlip) R 28282 28284 27553 0 -1 4202496 378 0 0 0 29 0 0 0 25 0 1 0 287574482 3186688 317 33554432000 134512640 134540672 4289373328 18446744073709551615 4158984817 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/28284/statm: 778 317 220 7 0 135 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 3112

[startup+0.700757 s]
/proc/loadavg: 3.85 3.97 3.92 4/189 28284
/proc/meminfo: memFree=22670008/32951124 swapFree=67111528/67111528
[pid=28284] ppid=28282 vsize=3112 CPUtime=0.69 cores=0,2
/proc/28284/stat : 28284 (MultiFlip) R 28282 28284 27553 0 -1 4202496 378 0 0 0 69 0 0 0 25 0 1 0 287574482 3186688 317 33554432000 134512640 134540672 4289373328 18446744073709551615 134523411 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/28284/statm: 778 317 220 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+1.10668 s]
/proc/loadavg: 3.85 3.97 3.92 5/190 28285
/proc/meminfo: memFree=22669528/32951124 swapFree=67111528/67111528
[pid=28284] ppid=28282 vsize=3112 CPUtime=1.1 cores=0,2
/proc/28284/stat : 28284 (MultiFlip) R 28282 28284 27553 0 -1 4202496 378 0 0 0 110 0 0 0 25 0 1 0 287574482 3186688 317 33554432000 134512640 134540672 4289373328 18446744073709551615 134529430 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/28284/statm: 778 317 220 7 0 135 0
Current children cumulated CPU time (s) 1.1
Current children cumulated vsize (KiB) 3112

[startup+1.20065 s]
/proc/loadavg: 3.85 3.97 3.92 5/190 28285
/proc/meminfo: memFree=22669528/32951124 swapFree=67111528/67111528
[pid=28284] ppid=28282 vsize=3112 CPUtime=1.19 cores=0,2
/proc/28284/stat : 28284 (MultiFlip) R 28282 28284 27553 0 -1 4202496 378 0 0 0 119 0 0 0 25 0 1 0 287574482 3186688 317 33554432000 134512640 134540672 4289373328 18446744073709551615 134524165 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/28284/statm: 778 317 220 7 0 135 0
Current children cumulated CPU time (s) 1.19
Current children cumulated vsize (KiB) 3112

Child status: 10
Real time (s): 1.24804
CPU time (s): 1.24681
CPU user time (s): 1.24581
CPU system time (s): 0.000999
CPU usage (%): 99.901
Max. virtual memory (cumulated for all children) (KiB): 3112

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.24581
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= 400
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= 9

runsolver used 0.001999 second user time and 0.009998 second system time

The end

Launcher Data 

Begin job on node109 at 2011-04-02 17:55:37
IDJOB=3096358
IDBENCH=83040
IDSOLVER=1523
FILE ID=node109/3096358-1301759737
RUNJOBID= node109-1301757124-27571
PBS_JOBID= 12841080
Free space on /tmp= 72060 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v600-c2556-S1383380994-043.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096358-1301759737/watcher-3096358-1301759737 -o /tmp/evaluation-result-3096358-1301759737/solver-3096358-1301759737 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096358-1301759737.cnf

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

MD5SUM BENCH= 016ccbb74f587730ed4815e028a75eb1
RANDOM SEED=39584607

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:      22670048 kB
Buffers:        345028 kB
Cached:        9604616 kB
SwapCached:          0 kB
Active:        5978368 kB
Inactive:      4037856 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      22670048 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:             428 kB
Writeback:           0 kB
AnonPages:       66676 kB
Mapped:          16164 kB
Slab:           201844 kB
PageTables:       5212 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS:   251916 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 17:55:39