Trace number 1522285

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
iPAWS 2009-03-22SAT 0.042992 0.0428181

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/560/
unif-k3-r4.25-v560-c2380-S1876865608-086.cnf
MD5SUMa08fcca560a80877927507a2ea133f40
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.016996
Satisfiable
(Un)Satisfiability was proved
Number of variables560
Number of clauses2380
Sum of the clauses size7140
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32380
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.00/0.04	s SATISFIABLE
0.00/0.04	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 0
0.00/0.04	c input file instance-1522285-1238578508.cnf, flips 26180

Verifier Data 

OK

Watcher Data 

runsolver version 3.2.9 (svn:489) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1522285-1238578508/watcher-1522285-1238578508 -o /tmp/evaluation-result-1522285-1238578508/solver-1522285-1238578508 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1522285-1238578508.cnf 660343066 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 1843200 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 1894400 KiB
Solver output will be limited to a maximum of 15728640 bytes. The first 1048576 bytes and the last 14680064 bytes will be preserved
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 1.00 1.02 1.16 3/64 28170
/proc/meminfo: memFree=1301904/2055920 swapFree=4178260/4192956
[pid=28170] ppid=28168 vsize=335916 CPUtime=0
/proc/28170/stat : 28170 (iPAWS) R 28168 28170 28070 0 -1 4194304 485 0 0 0 0 0 0 0 18 0 1 0 896442312 343977984 469 1992294400 134512640 135114423 4294956208 18446744073709551615 134615614 0 0 4096 0 0 0 0 17 1 0 0
/proc/28170/statm: 83979 470 54 146 0 83831 0

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

Child status: 0
Real time (s): 0.0428181
CPU time (s): 0.042992
CPU user time (s): 0.039993
CPU system time (s): 0.002999
CPU usage (%): 100.406
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.039993
system time used= 0.002999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 944
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= 2
involuntary context switches= 0

runsolver used 0.002999 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node39 at 2009-04-01 11:35:08
IDJOB=1522285
IDBENCH=70680
IDSOLVER=516
FILE ID=node39/1522285-1238578508
PBS_JOBID= 9062216
Free space on /tmp= 66252 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/560/unif-k3-r4.25-v560-c2380-S1876865608-086.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1522285-1238578508/watcher-1522285-1238578508 -o /tmp/evaluation-result-1522285-1238578508/solver-1522285-1238578508 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1522285-1238578508.cnf 660343066

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= a08fcca560a80877927507a2ea133f40
RANDOM SEED=660343066

node39.alineos.net Linux 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.285
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
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 lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5914.62
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.285
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
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 lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5586.94
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1302320 kB
Buffers:         96996 kB
Cached:         557972 kB
SwapCached:       8168 kB
Active:         226576 kB
Inactive:       438408 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1302320 kB
SwapTotal:     4192956 kB
SwapFree:      4178260 kB
Dirty:             708 kB
Writeback:           0 kB
Mapped:          16740 kB
Slab:            74884 kB
Committed_AS:  2461752 kB
PageTables:       1188 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264952 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66252 MiB
End job on node39 at 2009-04-01 11:35:08