Trace number 1631316

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 0.025995 0.0264641

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/480/
unif-k3-r4.25-v480-c2040-S1924575376-025.cnf
MD5SUM6fb0ba561e085817334f61be44abbbd8
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.015997
Satisfiable
(Un)Satisfiability was proved
Number of variables480
Number of clauses2040
Sum of the clauses size6120
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32040
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.00/0.02	s SATISFIABLE
0.00/0.02	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 0
0.00/0.02	c input file instance-1631316-1240142211.cnf, flips 12579

Verifier Data 

OK

Watcher Data 

runsolver version 3.2.9 (svn:492) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1631316-1240142211/watcher-1631316-1240142211 -o /tmp/evaluation-result-1631316-1240142211/solver-1631316-1240142211 -C 5000 -W 6000 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1631316-1240142211.cnf 2073011808 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 5000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 5030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 6000 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: 0.96 0.98 0.99 3/64 26906
/proc/meminfo: memFree=881232/2055920 swapFree=4192956/4192956
[pid=26906] ppid=26904 vsize=335916 CPUtime=0
/proc/26906/stat : 26906 (iPAWS) R 26904 26906 26514 0 -1 4194304 485 0 0 0 0 0 0 0 18 0 1 0 42254912 343977984 469 1992294400 134512640 135114423 4294956240 18446744073709551615 134737114 0 0 4096 0 0 0 0 17 1 0 0
/proc/26906/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): 0.0264641
CPU time (s): 0.025995
CPU user time (s): 0.019996
CPU system time (s): 0.005999
CPU usage (%): 98.2275
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.019996
system time used= 0.005999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 939
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 0.004999 second user time and 0.003999 second system time

The end

Launcher Data 

Begin job on node7 at 2009-04-19 13:56:51
IDJOB=1631316
IDBENCH=70722
IDSOLVER=588
FILE ID=node7/1631316-1240142211
PBS_JOBID= 9159269
Free space on /tmp= 66344 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/480/unif-k3-r4.25-v480-c2040-S1924575376-025.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1631316-1240142211/watcher-1631316-1240142211 -o /tmp/evaluation-result-1631316-1240142211/solver-1631316-1240142211 -C 5000 -W 6000 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1631316-1240142211.cnf 2073011808

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 6fb0ba561e085817334f61be44abbbd8
RANDOM SEED=2073011808

node7.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		: 3000.256
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		: 3000.256
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:        881648 kB
Buffers:         94952 kB
Cached:         977816 kB
SwapCached:          0 kB
Active:         366408 kB
Inactive:       719672 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        881648 kB
SwapTotal:     4192956 kB
SwapFree:      4192956 kB
Dirty:             808 kB
Writeback:           0 kB
Mapped:          23100 kB
Slab:            74088 kB
Committed_AS:   189584 kB
PageTables:       1444 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= 66344 MiB
End job on node7 at 2009-04-19 13:56:51