Trace number 1523848

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
NCVWr 2009-03-22SAT 0.016996 0.0174721

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 

0.00/0.01	c try 1 flip j 4220
0.00/0.01	c A solution is found
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 -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 
0.00/0.01	v 0 
0.00/0.01	c Done (mycputime is 0.010 seconds)

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-1523848-1238578631/watcher-1523848-1238578631 -o /tmp/evaluation-result-1523848-1238578631/solver-1523848-1238578631 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/NCVWr HOME/instance-1523848-1238578631.cnf 1575007550 

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: 0.91 0.97 0.99 3/64 7078
/proc/meminfo: memFree=858768/2055920 swapFree=4176868/4192956
[pid=7078] ppid=7076 vsize=412012 CPUtime=0
/proc/7078/stat : 7078 (NCVWr) R 7076 7078 6642 0 -1 4194304 152 0 0 0 0 0 0 0 18 0 1 0 1130525501 421900288 136 1992294400 134512640 135113558 4294956208 18446744073709551615 134522584 0 0 4096 0 0 0 0 17 1 0 0
/proc/7078/statm: 103003 136 55 146 0 101878 0

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

Child status: 10
Real time (s): 0.0174721
CPU time (s): 0.016996
CPU user time (s): 0.015997
CPU system time (s): 0.000999
CPU usage (%): 97.2752
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.015997
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= 238
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 node48 at 2009-04-01 11:37:11
IDJOB=1523848
IDBENCH=70680
IDSOLVER=531
FILE ID=node48/1523848-1238578631
PBS_JOBID= 9062180
Free space on /tmp= 66464 MiB

SOLVER NAME= NCVWr 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/560/unif-k3-r4.25-v560-c2380-S1876865608-086.cnf
COMMAND LINE= HOME/NCVWr BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1523848-1238578631/watcher-1523848-1238578631 -o /tmp/evaluation-result-1523848-1238578631/solver-1523848-1238578631 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/NCVWr HOME/instance-1523848-1238578631.cnf 1575007550

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

MD5SUM BENCH= a08fcca560a80877927507a2ea133f40
RANDOM SEED=1575007550

node48.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		: 3000.236
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		: 3000.236
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:        859184 kB
Buffers:        105848 kB
Cached:         987104 kB
SwapCached:      10280 kB
Active:         329680 kB
Inactive:       775216 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        859184 kB
SwapTotal:     4192956 kB
SwapFree:      4176868 kB
Dirty:            4620 kB
Writeback:           0 kB
Mapped:          17536 kB
Slab:            77816 kB
Committed_AS:  2739248 kB
PageTables:       1376 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= 66460 MiB
End job on node48 at 2009-04-01 11:37:11