Trace number 1523938

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 0.167974 0.168963

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/540/
unif-k3-r4.25-v540-c2295-S433356712-017.cnf
MD5SUM4a78ab70ae5c4ba56ac4f88e429d1c79
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.082986
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 

0.10/0.16	c try 1 flip j 101413
0.10/0.16	c A solution is found
0.10/0.16	s SATISFIABLE
0.10/0.16	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 
0.10/0.16	v 0 
0.10/0.16	c Done (mycputime is 0.160 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-1523938-1238587503/watcher-1523938-1238587503 -o /tmp/evaluation-result-1523938-1238587503/solver-1523938-1238587503 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/NCVWr HOME/instance-1523938-1238587503.cnf 996085835 

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: 1.83 1.82 1.44 3/64 18499
/proc/meminfo: memFree=1409280/2055920 swapFree=4179868/4192956
[pid=18499] ppid=18497 vsize=412012 CPUtime=0
/proc/18499/stat : 18499 (NCVWr) R 18497 18499 17973 0 -1 4194304 150 0 0 0 0 0 0 0 18 0 1 0 735642768 421900288 134 1992294400 134512640 135113558 4294956208 18446744073709551615 134522580 0 0 4096 0 0 0 0 17 1 0 0
/proc/18499/statm: 103003 134 55 146 0 101878 0

[startup+0.101939 s]
/proc/loadavg: 1.83 1.82 1.44 3/64 18499
/proc/meminfo: memFree=1409280/2055920 swapFree=4179868/4192956
[pid=18499] ppid=18497 vsize=416056 CPUtime=0.1
/proc/18499/stat : 18499 (NCVWr) R 18497 18499 17973 0 -1 4194304 219 0 0 0 10 0 0 0 18 0 1 0 735642768 426041344 203 1992294400 134512640 135113558 4294956208 18446744073709551615 134531883 0 0 4096 0 0 0 0 17 1 0 0
/proc/18499/statm: 104014 203 58 146 0 102889 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 416056

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

[startup+0.101939 s]
/proc/loadavg: 1.83 1.82 1.44 3/64 18499
/proc/meminfo: memFree=1409280/2055920 swapFree=4179868/4192956
[pid=18499] ppid=18497 vsize=416056 CPUtime=0.1
/proc/18499/stat : 18499 (NCVWr) R 18497 18499 17973 0 -1 4194304 219 0 0 0 10 0 0 0 18 0 1 0 735642768 426041344 203 1992294400 134512640 135113558 4294956208 18446744073709551615 134531883 0 0 4096 0 0 0 0 17 1 0 0
/proc/18499/statm: 104014 203 58 146 0 102889 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 416056

Child status: 10
Real time (s): 0.168963
CPU time (s): 0.167974
CPU user time (s): 0.167974
CPU system time (s): 0
CPU usage (%): 99.4146
Max. virtual memory (cumulated for all children) (KiB): 416056

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.167974
system time used= 0
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 0.005999 second user time and 0.003999 second system time

The end

Launcher Data 

Begin job on node49 at 2009-04-01 14:05:03
IDJOB=1523938
IDBENCH=70710
IDSOLVER=531
FILE ID=node49/1523938-1238587503
PBS_JOBID= 9062211
Free space on /tmp= 66388 MiB

SOLVER NAME= NCVWr 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/540/unif-k3-r4.25-v540-c2295-S433356712-017.cnf
COMMAND LINE= HOME/NCVWr BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1523938-1238587503/watcher-1523938-1238587503 -o /tmp/evaluation-result-1523938-1238587503/solver-1523938-1238587503 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/NCVWr HOME/instance-1523938-1238587503.cnf 996085835

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

MD5SUM BENCH= 4a78ab70ae5c4ba56ac4f88e429d1c79
RANDOM SEED=996085835

node49.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		: 3000.214
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	: 5931.00
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		: 3000.214
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:       1409760 kB
Buffers:        108152 kB
Cached:         434632 kB
SwapCached:       6452 kB
Active:         218040 kB
Inactive:       333744 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1409760 kB
SwapTotal:     4192956 kB
SwapFree:      4179868 kB
Dirty:            4616 kB
Writeback:           0 kB
Mapped:          14652 kB
Slab:            80208 kB
Committed_AS:  1967372 kB
PageTables:       1384 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= 66384 MiB
End job on node49 at 2009-04-01 14:05:04