Trace number 310581

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
March KS 2007-02-08SAT 0.072988 0.0734911

General information on the benchmark

Namerandom/2+p/p0.9/v630/
unif2p-p0.9-v630-c2280-S1788789488-19-SAT.cnf
MD5SUM8dd20c2b2815f1615e92da9f7d25dd5d
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.012997
Satisfiable
(Un)Satisfiability was proved
Number of variables630
Number of clauses2280
Sum of the clauses size6612
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 2228
Number of clauses of size 32052
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.02	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.02	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
0.00/0.02	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
0.00/0.02	c main()::
0.00/0.02	c initFormula():: searching for DIMACS p-line....
0.00/0.02	c initFormula():: the DIMACS p-line indicates a CNF of 630 variables and 2280 clauses.
0.00/0.02	c parseCNF():: parsing....
0.00/0.02	c parseCNF():: the CNF contains 0 unary clauses.
0.00/0.02	c runParser():: parsing was successful, warming up engines...
0.00/0.02	c simplify_formula():: removed 0 tautological, 55 satisfied and 0 duplicate clauses
0.00/0.02	c preprocessing fase I completed:: there are now 620 free variables and 2225 clauses.
0.00/0.02	c stat :: sign balance is biased by 0.646
0.00/0.02	c shorten_equivalence(): average equivalence length reduced from nan to nan
0.00/0.02	c using 3-SAT heuristics (occurence based diff)
0.00/0.02	c longest clause has size 3
0.00/0.02	c simplify_formula():: removed 0 tautological, 0 satisfied and 96 duplicate clauses
0.00/0.02	c resolvent_look() :: found 43 resolvents
0.00/0.02	c lessRedundantTransformation():: nothing to be done.
0.00/0.02	c transformTo3SAT():: you gave me 630 variables and 2268 clauses.
0.00/0.02	c transformTo3SAT():: by the way, the maximal clause length before transformation was 3.
0.00/0.02	c transformTo3SAT():: I will add 0 variables and 0 clauses!
0.00/0.02	c transformTo3SAT():: the transformation yielded 630 variabels and 2268 clauses.
0.00/0.02	c main():: clause / variable ratio: ( 2268 / 630 ) = 3.60
0.00/0.02	c longest clause has size 3
0.00/0.02	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.02	c dynamic_preselect_setsize :: off
0.00/0.02	c suggested doublelook initial :: 0
0.00/0.02	c main():: all systems go!
0.00/0.02	c |----------------------------------------------------------------|
0.00/0.07	c solution bin :: .00000000000000000011010000000000
0.00/0.07	c direction branchin :: current_rights = 3
0.00/0.07	
c |
0.00/0.07	c
0.00/0.07	c main():: nodeCount: 122
0.00/0.07	c main():: dead ends in main: 0
0.00/0.07	c main():: lookAheadCount: 7880
0.00/0.07	c main():: unitResolveCount: 1236
0.00/0.07	c main():: time=0.060000
0.00/0.07	c main():: necessary_assignments: 25
0.00/0.07	c main():: bin_sat: 0, bin_unsat 0
0.00/0.07	c main():: doublelook: #: 262, succes #: 172
0.00/0.07	c main():: doublelook: overall 3.391 of all possible doublelooks executed
0.00/0.07	c main():: doublelook: succesrate: 65.649, average DL_trigger: 6798.073
0.00/0.07	c main():: SOLUTION VERIFIED :-)
0.00/0.07	s SATISFIABLE
0.00/0.07	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 -601 602 603 -604 -605 606 -607 608 -609 -610 611 612 -613 614 -615 -616 617 618 619 -620 -621 622 623 -624 -625 626 627 628 629 630 0

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/node41/watcher-310581-1172560333 -o ROOT/results/node41/solver-310581-1172560333 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/310581-1172560333/march_ks /tmp/evaluation/310581-1172560333/instance-310581-1172560333.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: 0.94 1.02 1.00 3/64 17256
/proc/meminfo: memFree=1824992/2055920 swapFree=4172320/4192956
[pid=17256] ppid=17254 vsize=928 CPUtime=0
/proc/17256/stat : 17256 (march_ks) R 17254 17256 16394 0 -1 4194304 137 0 0 0 0 0 0 0 18 0 1 0 275989294 950272 119 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134687937 0 0 4096 0 0 0 0 17 1 0 0
/proc/17256/statm: 232 119 49 123 0 107 0

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

Child status: 10
Real time (s): 0.0734911
CPU time (s): 0.072988
CPU user time (s): 0.068989
CPU system time (s): 0.003999
CPU usage (%): 99.3154
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.068989
system time used= 0.003999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 305
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= 0

runsolver used 0.003999 second user time and 0.005999 second system time

The end

Launcher Data (download as text)

Begin job on node41 on Tue Feb 27 07:12:14 UTC 2007

IDJOB= 310581
IDBENCH= 20291
IDSOLVER= 111
FILE ID= node41/310581-1172560333

PBS_JOBID= 3971884

Free space on /tmp= 66558 MiB

SOLVER NAME= March KS 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.9/v630/unif2p-p0.9-v630-c2280-S1788789488-19-SAT.cnf
COMMAND LINE= /tmp/evaluation/310581-1172560333/march_ks /tmp/evaluation/310581-1172560333/instance-310581-1172560333.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node41/watcher-310581-1172560333 -o ROOT/results/node41/solver-310581-1172560333 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/310581-1172560333/march_ks /tmp/evaluation/310581-1172560333/instance-310581-1172560333.cnf            

META MD5SUM SOLVER= cd0143c15836d32fe9acb8d523a59b67
MD5SUM BENCH=  8dd20c2b2815f1615e92da9f7d25dd5d

RANDOM SEED= 426301443

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node41.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		: 3000.231
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		: 3000.231
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:       1825400 kB
Buffers:         31264 kB
Cached:         138464 kB
SwapCached:      14892 kB
Active:         105212 kB
Inactive:        86284 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1825400 kB
SwapTotal:     4192956 kB
SwapFree:      4172320 kB
Dirty:            2448 kB
Writeback:           0 kB
Mapped:          15728 kB
Slab:            24980 kB
Committed_AS:   547716 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= 66558 MiB

End job on node41 on Tue Feb 27 07:12:14 UTC 2007