Trace number 310540

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 2.74958 2.75032

General information on the benchmark

Namerandom/2+p/p0.9/v630/
unif2p-p0.9-v630-c2280-S1244126495-18-SAT.cnf
MD5SUM7170ef62ab1f0b3de97654e24bebe902
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.010998
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, 12 satisfied and 0 duplicate clauses
0.00/0.02	c preprocessing fase I completed:: there are now 627 free variables and 2268 clauses.
0.00/0.02	c stat :: sign balance is biased by 0.587
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 92 duplicate clauses
0.00/0.02	c resolvent_look() :: found 44 resolvents
0.00/0.02	c lessRedundantTransformation():: nothing to be done.
0.00/0.02	c transformTo3SAT():: you gave me 630 variables and 2312 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 2312 clauses.
0.00/0.02	c main():: clause / variable ratio: ( 2312 / 630 ) = 3.67
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 |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| 0 NC: 2575 JD: 11
2.56/2.60	c |----------------------------------------------------------------|
2.66/2.74	c solution bin :: 10000000000.000101100000100000000
2.66/2.74	c direction branchin :: current_rights = 5
2.66/2.74	
c |
2.66/2.74	c
2.66/2.74	c main():: nodeCount: 2776
2.66/2.74	c main():: dead ends in main: 22
2.66/2.74	c main():: lookAheadCount: 334661
2.66/2.74	c main():: unitResolveCount: 49101
2.66/2.74	c main():: time=2.740000
2.66/2.74	c main():: necessary_assignments: 1292
2.66/2.74	c main():: bin_sat: 0, bin_unsat 0
2.66/2.74	c main():: doublelook: #: 15131, succes #: 11610
2.66/2.74	c main():: doublelook: overall 4.656 of all possible doublelooks executed
2.66/2.74	c main():: doublelook: succesrate: 76.730, average DL_trigger: 7850.961
2.66/2.74	c main():: SOLUTION VERIFIED :-)
2.66/2.74	s SATISFIABLE
2.66/2.74	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-310540-1172560242 -o ROOT/results/node41/solver-310540-1172560242 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/310540-1172560242/march_ks /tmp/evaluation/310540-1172560242/instance-310540-1172560242.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: 0.80 0.95 0.98 3/64 16990
/proc/meminfo: memFree=1828272/2055920 swapFree=4172320/4192956
[pid=16990] ppid=16988 vsize=928 CPUtime=0
/proc/16990/stat : 16990 (march_ks) R 16988 16990 16394 0 -1 4194304 137 0 0 0 0 0 0 0 18 0 1 0 275980105 950272 119 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134687937 0 0 4096 0 0 0 0 17 1 0 0
/proc/16990/statm: 232 119 49 123 0 107 0

[startup+0.106279 s]
/proc/loadavg: 0.80 0.95 0.98 3/64 16990
/proc/meminfo: memFree=1828272/2055920 swapFree=4172320/4192956
[pid=16990] ppid=16988 vsize=1532 CPUtime=0.1
/proc/16990/stat : 16990 (march_ks) R 16988 16990 16394 0 -1 4194304 302 0 0 0 10 0 0 0 18 0 1 0 275980105 1568768 284 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134526432 0 0 4096 0 0 0 0 17 1 0 0
/proc/16990/statm: 383 284 73 123 0 258 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1532

[startup+0.514313 s]
/proc/loadavg: 0.80 0.95 0.98 3/64 16990
/proc/meminfo: memFree=1828272/2055920 swapFree=4172320/4192956
[pid=16990] ppid=16988 vsize=1532 CPUtime=0.51
/proc/16990/stat : 16990 (march_ks) R 16988 16990 16394 0 -1 4194304 329 0 0 0 51 0 0 0 22 0 1 0 275980105 1568768 311 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538152 0 0 4096 0 0 0 0 17 1 0 0
/proc/16990/statm: 383 311 73 123 0 258 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 1532

[startup+1.33439 s]
/proc/loadavg: 0.81 0.95 0.98 2/65 16991
/proc/meminfo: memFree=1827240/2055920 swapFree=4172320/4192956
[pid=16990] ppid=16988 vsize=1668 CPUtime=1.33
/proc/16990/stat : 16990 (march_ks) R 16988 16990 16394 0 -1 4194304 348 0 0 0 133 0 0 0 25 0 1 0 275980105 1708032 330 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134526429 0 0 4096 0 0 0 0 17 1 0 0
/proc/16990/statm: 417 330 73 123 0 292 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 1668

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

[startup+1.64041 s]
/proc/loadavg: 0.81 0.95 0.98 2/65 16991
/proc/meminfo: memFree=1827240/2055920 swapFree=4172320/4192956
[pid=16990] ppid=16988 vsize=1668 CPUtime=1.63
/proc/16990/stat : 16990 (march_ks) R 16988 16990 16394 0 -1 4194304 349 0 0 0 163 0 0 0 25 0 1 0 275980105 1708032 331 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134526499 0 0 4096 0 0 0 0 17 1 0 0
/proc/16990/statm: 417 331 73 123 0 292 0
Current children cumulated CPU time (s) 1.63
Current children cumulated vsize (KiB) 1668

[startup+2.46048 s]
/proc/loadavg: 0.81 0.95 0.98 2/65 16991
/proc/meminfo: memFree=1827048/2055920 swapFree=4172320/4192956
[pid=16990] ppid=16988 vsize=1668 CPUtime=2.45
/proc/16990/stat : 16990 (march_ks) R 16988 16990 16394 0 -1 4194304 358 0 0 0 245 0 0 0 25 0 1 0 275980105 1708032 340 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538194 0 0 4096 0 0 0 0 17 1 0 0
/proc/16990/statm: 417 340 73 123 0 292 0
Current children cumulated CPU time (s) 2.45
Current children cumulated vsize (KiB) 1668

[startup+2.6645 s]
/proc/loadavg: 0.81 0.95 0.98 2/65 16991
/proc/meminfo: memFree=1827048/2055920 swapFree=4172320/4192956
[pid=16990] ppid=16988 vsize=1840 CPUtime=2.66
/proc/16990/stat : 16990 (march_ks) R 16988 16990 16394 0 -1 4194304 375 0 0 0 266 0 0 0 25 0 1 0 275980105 1884160 357 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134526412 0 0 4096 0 0 0 0 17 1 0 0
/proc/16990/statm: 460 357 73 123 0 335 0
Current children cumulated CPU time (s) 2.66
Current children cumulated vsize (KiB) 1840

Child status: 10
Real time (s): 2.75032
CPU time (s): 2.74958
CPU user time (s): 2.74758
CPU system time (s): 0.001999
CPU usage (%): 99.973
Max. virtual memory (cumulated for all children) (KiB): 1840

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 2.74758
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= 376
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= 3

runsolver used 0.002999 second user time and 0.011998 second system time

The end

Launcher Data (download as text)

Begin job on node41 on Tue Feb 27 07:10:42 UTC 2007

IDJOB= 310540
IDBENCH= 20290
IDSOLVER= 111
FILE ID= node41/310540-1172560242

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-S1244126495-18-SAT.cnf
COMMAND LINE= /tmp/evaluation/310540-1172560242/march_ks /tmp/evaluation/310540-1172560242/instance-310540-1172560242.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node41/watcher-310540-1172560242 -o ROOT/results/node41/solver-310540-1172560242 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/310540-1172560242/march_ks /tmp/evaluation/310540-1172560242/instance-310540-1172560242.cnf            

META MD5SUM SOLVER= cd0143c15836d32fe9acb8d523a59b67
MD5SUM BENCH=  7170ef62ab1f0b3de97654e24bebe902

RANDOM SEED= 174865627

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:       1828616 kB
Buffers:         31172 kB
Cached:         135156 kB
SwapCached:      14892 kB
Active:          98980 kB
Inactive:        89152 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1828616 kB
SwapTotal:     4192956 kB
SwapFree:      4172320 kB
Dirty:            2432 kB
Writeback:           0 kB
Mapped:          15720 kB
Slab:            25060 kB
Committed_AS:   543832 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 07:10:45 UTC 2007