Trace number 1523932

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 0.157975 0.158149

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/540/
unif-k3-r4.25-v540-c2295-S1916548023-003.cnf
MD5SUM11db2aaf72f0cb9c260a5127c4f6b388
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.011997
Satisfiable
(Un)Satisfiability was proved
Number of variables540
Number of clauses2295
Sum of the clauses size6885
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32295
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.09/0.15	c try 1 flip j 96636
0.09/0.15	c A solution is found
0.09/0.15	s SATISFIABLE
0.09/0.15	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 
0.09/0.15	v 0 
0.09/0.15	c Done (mycputime is 0.150 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-1523932-1238586734/watcher-1523932-1238586734 -o /tmp/evaluation-result-1523932-1238586734/solver-1523932-1238586734 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/NCVWr HOME/instance-1523932-1238586734.cnf 1674345080 

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: 1.72 2.11 1.83 3/64 21276
/proc/meminfo: memFree=1374312/2055920 swapFree=4177944/4192956
[pid=21276] ppid=21274 vsize=412012 CPUtime=0
/proc/21276/stat : 21276 (NCVWr) R 21274 21276 21212 0 -1 4194304 150 0 0 0 0 0 0 0 18 0 1 0 1131338639 421900288 134 1992294400 134512640 135113558 4294956224 18446744073709551615 134619510 0 0 4096 0 0 0 0 17 1 0 0
/proc/21276/statm: 103003 134 55 146 0 101878 0

[startup+0.0155739 s]
/proc/loadavg: 1.72 2.11 1.83 3/64 21276
/proc/meminfo: memFree=1374312/2055920 swapFree=4177944/4192956
[pid=21276] ppid=21274 vsize=416056 CPUtime=0.01
/proc/21276/stat : 21276 (NCVWr) R 21274 21276 21212 0 -1 4194304 219 0 0 0 1 0 0 0 18 0 1 0 1131338639 426041344 203 1992294400 134512640 135113558 4294956224 18446744073709551615 134534219 0 0 4096 0 0 0 0 17 1 0 0
/proc/21276/statm: 104014 203 58 146 0 102889 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 416056

[startup+0.101579 s]
/proc/loadavg: 1.72 2.11 1.83 3/64 21276
/proc/meminfo: memFree=1374312/2055920 swapFree=4177944/4192956
[pid=21276] ppid=21274 vsize=416056 CPUtime=0.09
/proc/21276/stat : 21276 (NCVWr) R 21274 21276 21212 0 -1 4194304 219 0 0 0 9 0 0 0 18 0 1 0 1131338639 426041344 203 1992294400 134512640 135113558 4294956224 18446744073709551615 134533630 0 0 4096 0 0 0 0 17 1 0 0
/proc/21276/statm: 104014 203 58 146 0 102889 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 416056

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

Child status: 10
Real time (s): 0.158149
CPU time (s): 0.157975
CPU user time (s): 0.156976
CPU system time (s): 0.000999
CPU usage (%): 99.89
Max. virtual memory (cumulated for all children) (KiB): 416056

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.156976
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= 234
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 0.001999 second user time and 0.006998 second system time

The end

Launcher Data 

Begin job on node29 at 2009-04-01 13:52:14
IDJOB=1523932
IDBENCH=70708
IDSOLVER=531
FILE ID=node29/1523932-1238586734
PBS_JOBID= 9062249
Free space on /tmp= 66472 MiB

SOLVER NAME= NCVWr 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/540/unif-k3-r4.25-v540-c2295-S1916548023-003.cnf
COMMAND LINE= HOME/NCVWr BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1523932-1238586734/watcher-1523932-1238586734 -o /tmp/evaluation-result-1523932-1238586734/solver-1523932-1238586734 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/NCVWr HOME/instance-1523932-1238586734.cnf 1674345080

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

MD5SUM BENCH= 11db2aaf72f0cb9c260a5127c4f6b388
RANDOM SEED=1674345080

node29.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		: 3000.234
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		: 3000.234
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:       1374728 kB
Buffers:        101432 kB
Cached:         476144 kB
SwapCached:       8856 kB
Active:         214248 kB
Inactive:       373740 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1374728 kB
SwapTotal:     4192956 kB
SwapFree:      4177944 kB
Dirty:            4820 kB
Writeback:           0 kB
Mapped:          16144 kB
Slab:            79164 kB
Committed_AS:  3154080 kB
PageTables:       1476 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= 66468 MiB
End job on node29 at 2009-04-01 13:52:14