Trace number 3096313

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 0.05599 0.0565859

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v600-c2556-S735137557-045.SATISFIABLE.cnf
MD5SUMdb052c7898d14b578cec80f7488daf9a
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.003999
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 

0.02/0.05	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.02/0.05	c input CNF file=HOME/instance-3096313-1301758435.cnf 
0.02/0.05	c var#=600 clause#=2556 
0.02/0.05	c clause#=2556 var#=600 ratio=4 
0.02/0.05	c Unsat#=         3 flip#=      4837 
0.02/0.05	c Unsat#=         2 flip#=      4853 
0.02/0.05	c Unsat#=         1 flip#=      5371 
0.02/0.05	c Unsat#=         0 flip#=      5551 
0.02/0.05	c try 1-th flip# 5551
0.02/0.05	c A solution is found
0.02/0.05	c verified 
0.02/0.05	s SATISFIABLE
0.02/0.05	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 
0.02/0.05	v 0
0.02/0.05	c Done (Running cputime is 0.048 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-3096313-1301758435/watcher-3096313-1301758435 -o /tmp/evaluation-result-3096313-1301758435/solver-3096313-1301758435 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096313-1301758435.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: 3.78 3.95 3.89 4/189 28030
/proc/meminfo: memFree=22671268/32951124 swapFree=67111528/67111528
[pid=28030] ppid=28028 vsize=2980 CPUtime=0 cores=0,2
/proc/28030/stat : 28030 (MultiFlip) R 28028 28030 27553 0 -1 4202496 351 0 0 0 0 0 0 0 25 0 1 0 287444248 3051520 290 33554432000 134512640 134540672 4289955824 18446744073709551615 134538722 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/28030/statm: 745 290 217 7 0 102 0

[startup+0.031076 s]
/proc/loadavg: 3.78 3.95 3.89 4/189 28030
/proc/meminfo: memFree=22671268/32951124 swapFree=67111528/67111528
[pid=28030] ppid=28028 vsize=3112 CPUtime=0.02 cores=0,2
/proc/28030/stat : 28030 (MultiFlip) R 28028 28030 27553 0 -1 4202496 372 0 0 0 2 0 0 0 25 0 1 0 287444248 3186688 311 33554432000 134512640 134540672 4289955824 18446744073709551615 134524691 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/28030/statm: 778 311 219 7 0 135 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 3112

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

[startup+0.031076 s]
/proc/loadavg: 3.78 3.95 3.89 4/189 28030
/proc/meminfo: memFree=22671268/32951124 swapFree=67111528/67111528
[pid=28030] ppid=28028 vsize=3112 CPUtime=0.02 cores=0,2
/proc/28030/stat : 28030 (MultiFlip) R 28028 28030 27553 0 -1 4202496 372 0 0 0 2 0 0 0 25 0 1 0 287444248 3186688 311 33554432000 134512640 134540672 4289955824 18446744073709551615 134524691 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/28030/statm: 778 311 219 7 0 135 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 3112

Child status: 10
Real time (s): 0.0565859
CPU time (s): 0.05599
CPU user time (s): 0.054991
CPU system time (s): 0.000999
CPU usage (%): 98.9469
Max. virtual memory (cumulated for all children) (KiB): 3112

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.054991
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= 402
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 second user time and 0.004999 second system time

The end

Launcher Data 

Begin job on node109 at 2011-04-02 17:33:55
IDJOB=3096313
IDBENCH=82995
IDSOLVER=1523
FILE ID=node109/3096313-1301758435
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-S735137557-045.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096313-1301758435/watcher-3096313-1301758435 -o /tmp/evaluation-result-3096313-1301758435/solver-3096313-1301758435 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096313-1301758435.cnf

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

MD5SUM BENCH= db052c7898d14b578cec80f7488daf9a
RANDOM SEED=177269121

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:      22671548 kB
Buffers:        344652 kB
Cached:        9604688 kB
SwapCached:          0 kB
Active:        5977800 kB
Inactive:      4037800 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      22671548 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:             672 kB
Writeback:           0 kB
AnonPages:       66172 kB
Mapped:          16184 kB
Slab:           202112 kB
PageTables:       5236 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS:   253064 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 17:33:55