Trace number 298982

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, and are wall clock time (not CPU 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
Hybrid1 2007-02-08SAT 0.05499 0.0552751

General information on the benchmark

Namerandom/OnTreshold/3SAT/v600/
unif-k3-r4.261-v600-c2556-S1982407920-12.SAT.shuffled.cnf
MD5SUMb02420eb242c9f0eb6d6be855d4eeabd
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.036993
Satisfiable
(Un)Satisfiability was proved
Number of variables600
Number of clauses2556
Sum of the clauses size7668
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32556
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.05	c try 1 flip j 31406
0.00/0.05	c A solution is found
0.00/0.05	s SATISFIABLE
0.00/0.05	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 -561 -562 -563 -564 565 566 -567 568 -569 -570 571 572 -573 574 -575 -576 -577 -578 579 -580 -581 582 583 -584 -585 -586 587 -588 -589 -590 591 -592 -593 -594 595 -596 -597 598 599 600 
0.00/0.05	v 0 
0.00/0.05	c Done (mycputime is 0.000 seconds)

Verifier Data (download as text)

OK

Watcher Data (download as text)

runsolver version 3.2.0 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node18/watcher-298982-1171863762 -o ROOT/results/node18/solver-298982-1171863762 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/298982-1171863762/Hybrid1 /tmp/evaluation/298982-1171863762/instance-298982-1171863762.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 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: 1.57 1.12 1.04 3/77 23176
/proc/meminfo: memFree=1549408/2055920 swapFree=4192812/4192956
[pid=23176] ppid=23174 vsize=244848 CPUtime=0
/proc/23176/stat : 23176 (Hybrid1) R 23174 23176 19783 0 -1 4194304 138 0 0 0 0 0 0 0 18 0 1 0 206330771 250724352 121 18446744073709551615 134512640 134935932 4294956624 18446744073709551615 134523663 0 0 4096 0 0 0 0 17 0 0 0
/proc/23176/statm: 61212 121 40 103 0 60716 0

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

Child status: 10
Real time (s): 0.0552751
CPU time (s): 0.05499
CPU user time (s): 0.052991
CPU system time (s): 0.001999
CPU usage (%): 99.4842
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.052991
system time used= 0.001999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 232
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= 8
involuntary context switches= 1

runsolver used 0.003999 second user time and 0.004999 second system time

The end

Launcher Data (download as text)

Begin job on node18 on Mon Feb 19 05:42:42 UTC 2007

IDJOB= 298982
IDBENCH= 19999
IDSOLVER= 115
FILE ID= node18/298982-1171863762

PBS_JOBID= 3839395

Free space on /tmp= 66542 MiB

SOLVER NAME= Hybrid1 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/OnTreshold/3SAT/v600/unif-k3-r4.261-v600-c2556-S1982407920-12.SAT.shuffled.cnf
COMMAND LINE= /tmp/evaluation/298982-1171863762/Hybrid1 /tmp/evaluation/298982-1171863762/instance-298982-1171863762.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node18/watcher-298982-1171863762 -o ROOT/results/node18/solver-298982-1171863762 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/298982-1171863762/Hybrid1 /tmp/evaluation/298982-1171863762/instance-298982-1171863762.cnf            

META MD5SUM SOLVER= 4ad8950502569bcbd9dc3ae819b6eefe
MD5SUM BENCH=  b02420eb242c9f0eb6d6be855d4eeabd

RANDOM SEED= 575844123

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node18.alineos.net 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005 x86_64 x86_64 x86_64 GNU/Linux

/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:       1549816 kB
Buffers:         52532 kB
Cached:         321672 kB
SwapCached:          0 kB
Active:         299732 kB
Inactive:       134152 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1549816 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            6352 kB
Writeback:           0 kB
Mapped:          78556 kB
Slab:            57892 kB
Committed_AS:   790236 kB
PageTables:       1668 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= 66542 MiB

End job on node18 on Mon Feb 19 05:42:42 UTC 2007