Trace number 1518457

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
march_hi hiSAT 0.069989 0.0696411

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/560/
unif-k3-r4.25-v560-c2380-S809967194-078.cnf
MD5SUMed095e38b0a3e5af1f48e3823e5c45cb
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.019996
Satisfiable
(Un)Satisfiability was proved
Number of variables560
Number of clauses2380
Sum of the clauses size7140
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32380
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.00/0.02	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.02	c main()::  **                Copyright (C) 2001-2009 M.J.H. Heule, J.E. van Zwieten, and M. Dufour                 **
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 560 variables and 2380 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, 11 satisfied and 0 duplicate clauses
0.00/0.02	c preprocessing fase I completed:: there are now 559 free variables and 2369 clauses.
0.00/0.02	c stat :: sign balance is biased by 0.488
0.00/0.02	c using 3-SAT heuristics (occurence based diff)
0.00/0.02	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.02	c simplify_formula():: removed 0 tautological, 0 satisfied and 176 duplicate clauses
0.00/0.02	c resolvent_look() :: found 84 resolvents
0.00/0.02	c lessRedundantTransformation():: nothing to be done.
0.00/0.02	c transformTo3SAT():: you gave me 560 variables and 2453 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 560 variabels and 2453 clauses.
0.00/0.02	c main():: clause / variable ratio: ( 2453 / 560 ) = 4.38
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 number of free variables = 559
0.00/0.02	c dynamic_preselect_setsize :: off
0.00/0.02	c main():: all systems go!
0.00/0.02	c |----------------------------------------------------------------|
0.04/0.06	c |.000000000000000000000000000000000000000001000000000000000000000|
0.04/0.06	
c |
0.04/0.06	c
0.04/0.06	c main():: nodeCount: 115
0.04/0.06	c main():: dead ends in main: 3
0.04/0.06	c main():: lookAheadCount: 8436
0.04/0.06	c main():: unitResolveCount: 1488
0.04/0.06	c main():: time=0.060000
0.04/0.06	c main():: necessary_assignments: 79
0.04/0.06	c main():: bin_sat: 0, bin_unsat 0
0.04/0.06	c main():: doublelook: #: 230, succes #: 115
0.04/0.06	c main():: doublelook: overall 2.767 of all possible doublelooks executed
0.04/0.06	c main():: doublelook: succesrate: 50.000, average DL_trigger: 44.341
0.04/0.06	c main():: SOLUTION VERIFIED :-)
0.04/0.06	s SATISFIABLE
0.04/0.06	v 1 2 -3 4 5 6 7 8 -9 10 12 -13 14 15 -16 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 88 90 91 93 -94 -95 96 97 98 99 -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 -132 -133 -134 135 136 137 138 139 -140 -141 -142 143 144 -145 146 -147 -148 -149 150 -151 153 154 -155 157 158 159 -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 -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 -281 282 284 -285 286 -288 -289 290 -291 -292 293 -294 -295 -296 -297 -299 -300 301 302 303 304 305 -306 307 -308 -309 -310 311 312 -313 -314 -315 316 317 -318 -319 -320 -321 322 324 -325 326 327 -328 -329 -330 -331 -332 333 -334 335 -336 -337 338 -339 340 341 343 -344 -345 346 347 -348 349 -350 -351 -352 353 -354 -355 -356 -357 -358 -359 360 -361 -362 363 -365 366 368 369 370 371 372 373 -374 -375 376 379 380 -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 -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 -453 454 -455 456 457 458 459 460 461 -462 -463 464 -465 466 -467 468 -469 470 471 -472 -473 474 -475 -476 477 478 479 481 482 483 -484 485 -486 487 488 -489 490 492 -493 -494 495 -496 497 498 -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 -533 535 -536 -537 -538 539 540 541 542 543 -545 546 547 548 549 -550 -551 552 -553 554 -555 -556 557 558 559 560 0

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-1518457-1238299901/watcher-1518457-1238299901 -o /tmp/evaluation-result-1518457-1238299901/solver-1518457-1238299901 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/march_hi HOME/instance-1518457-1238299901.cnf 

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: 0.99 0.97 0.99 3/64 29974
/proc/meminfo: memFree=892184/2055920 swapFree=4176708/4192956
[pid=29974] ppid=29972 vsize=968 CPUtime=0
/proc/29974/stat : 29974 (march_hi) R 29972 29974 29903 0 -1 4194304 138 0 0 0 0 0 0 0 18 0 1 0 1102652193 991232 122 1992294400 134512640 135197378 4294956240 18446744073709551615 134560539 0 0 4096 0 0 0 0 17 1 0 0
/proc/29974/statm: 242 122 62 167 0 73 0

[startup+0.0503829 s]
/proc/loadavg: 0.99 0.97 0.99 3/64 29974
/proc/meminfo: memFree=892184/2055920 swapFree=4176708/4192956
[pid=29974] ppid=29972 vsize=1940 CPUtime=0.04
/proc/29974/stat : 29974 (march_hi) R 29972 29974 29903 0 -1 4194304 327 0 0 0 4 0 0 0 18 0 1 0 1102652193 1986560 310 1992294400 134512640 135197378 4294956240 18446744073709551615 134539276 0 0 4096 0 0 0 0 17 1 0 0
/proc/29974/statm: 485 310 91 167 0 316 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 1940

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

[startup+0.0503829 s]
/proc/loadavg: 0.99 0.97 0.99 3/64 29974
/proc/meminfo: memFree=892184/2055920 swapFree=4176708/4192956
[pid=29974] ppid=29972 vsize=1940 CPUtime=0.04
/proc/29974/stat : 29974 (march_hi) R 29972 29974 29903 0 -1 4194304 327 0 0 0 4 0 0 0 18 0 1 0 1102652193 1986560 310 1992294400 134512640 135197378 4294956240 18446744073709551615 134539276 0 0 4096 0 0 0 0 17 1 0 0
/proc/29974/statm: 485 310 91 167 0 316 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 1940

Child status: 10
Real time (s): 0.0696411
CPU time (s): 0.069989
CPU user time (s): 0.06499
CPU system time (s): 0.004999
CPU usage (%): 100.5
Max. virtual memory (cumulated for all children) (KiB): 1940

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.06499
system time used= 0.004999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 371
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= 1

runsolver used 0.003999 second user time and 0.004999 second system time

The end

Launcher Data 

Begin job on node51 at 2009-03-29 06:11:41
IDJOB=1518457
IDBENCH=70681
IDSOLVER=521
FILE ID=node51/1518457-1238299901
PBS_JOBID= 9061045
Free space on /tmp= 65232 MiB

SOLVER NAME= march_hi hi
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/560/unif-k3-r4.25-v560-c2380-S809967194-078.cnf
COMMAND LINE= HOME/march_hi BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1518457-1238299901/watcher-1518457-1238299901 -o /tmp/evaluation-result-1518457-1238299901/solver-1518457-1238299901 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/march_hi HOME/instance-1518457-1238299901.cnf

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

MD5SUM BENCH= ed095e38b0a3e5af1f48e3823e5c45cb
RANDOM SEED=911362344

node51.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:        892600 kB
Buffers:         74604 kB
Cached:         999184 kB
SwapCached:       9996 kB
Active:         158704 kB
Inactive:       926472 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        892600 kB
SwapTotal:     4192956 kB
SwapFree:      4176708 kB
Dirty:             812 kB
Writeback:           0 kB
Mapped:          17076 kB
Slab:            64140 kB
Committed_AS:  2917836 kB
PageTables:       1400 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= 65232 MiB
End job on node51 at 2009-03-29 06:11:42