Trace number 1522264

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 0.014997 0.0158439

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/520/
unif-k3-r4.25-v520-c2210-S621134782-041.cnf
MD5SUM09a6dc57cba44ea6f55eca37108c958d
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.014997
Satisfiable
(Un)Satisfiability was proved
Number of variables520
Number of clauses2210
Sum of the clauses size6630
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32210
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.00/0.01	s SATISFIABLE
0.00/0.01	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 0
0.00/0.01	c input file instance-1522264-1238572887.cnf, flips 4912

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-1522264-1238572887/watcher-1522264-1238572887 -o /tmp/evaluation-result-1522264-1238572887/solver-1522264-1238572887 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1522264-1238572887.cnf 1139419663 

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: 1.99 1.86 1.57 3/65 3601
/proc/meminfo: memFree=1209248/2055920 swapFree=4176856/4192956
[pid=3601] ppid=3599 vsize=335916 CPUtime=0
/proc/3601/stat : 3601 (iPAWS) R 3599 3601 3073 0 -1 4194304 486 0 0 0 0 0 0 0 20 0 1 0 1016662434 343977984 470 1992294400 134512640 135114423 4294956224 18446744073709551615 134533972 0 0 4096 0 0 0 0 17 1 0 0
/proc/3601/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): 0.0158439
CPU time (s): 0.014997
CPU user time (s): 0.010998
CPU system time (s): 0.003999
CPU usage (%): 94.6548
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.010998
system time used= 0.003999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 941
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 0.003999 second user time and 0.006998 second system time

The end

Launcher Data 

Begin job on node8 at 2009-04-01 10:01:27
IDJOB=1522264
IDBENCH=70659
IDSOLVER=516
FILE ID=node8/1522264-1238572887
PBS_JOBID= 9070518
Free space on /tmp= 64248 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/520/unif-k3-r4.25-v520-c2210-S621134782-041.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1522264-1238572887/watcher-1522264-1238572887 -o /tmp/evaluation-result-1522264-1238572887/solver-1522264-1238572887 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1522264-1238572887.cnf 1139419663

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

MD5SUM BENCH= 09a6dc57cba44ea6f55eca37108c958d
RANDOM SEED=1139419663

node8.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		: 3000.232
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		: 3000.232
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	: 5996.54
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1209728 kB
Buffers:        106868 kB
Cached:         632948 kB
SwapCached:       9204 kB
Active:         180224 kB
Inactive:       570252 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1209728 kB
SwapTotal:     4192956 kB
SwapFree:      4176856 kB
Dirty:             820 kB
Writeback:           0 kB
Mapped:          16364 kB
Slab:            81464 kB
Committed_AS:  2709944 kB
PageTables:       1376 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264960 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 64248 MiB
End job on node8 at 2009-04-01 10:01:27