Trace number 1518206

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_nn nnSAT 0.725888 0.726131

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/520/
unif-k3-r4.25-v520-c2210-S1161147107-031.cnf
MD5SUM4cc7ee2f20081e6ebd36addd568f2c4e
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.010997
Satisfiable
(Un)Satisfiability was proved
Number of variables520
Number of clauses2210
Sum of the clauses size6630
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32210
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 520 variables and 2210 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, 0 satisfied and 0 duplicate clauses
0.00/0.02	c preprocessing fase I completed:: there are now 520 free variables and 2210 clauses.
0.00/0.02	c stat :: sign balance is biased by 0.452
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 164 duplicate clauses
0.00/0.02	c resolvent_look() :: found 90 resolvents
0.00/0.02	c lessRedundantTransformation():: nothing to be done.
0.00/0.02	c transformTo3SAT():: you gave me 520 variables and 2300 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 520 variabels and 2300 clauses.
0.00/0.02	c main():: clause / variable ratio: ( 2300 / 520 ) = 4.42
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 = 520
0.00/0.02	c dynamic_preselect_setsize :: off
0.00/0.02	c main():: all systems go!
0.00/0.02	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| ( 0/999) NodeCount: 38
0.00/0.03	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |************************************************
c |*************************************************
c |**************************************************
c |****************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |************************************************************
c |*************************************************************
c |**************************************************************
c |***************************************************************
c |****************************************************************| ( 1/999) NodeCount: 669
0.19/0.22	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |*****************
c |******************
c |********************
c |************************
c |*************************
c |**************************
c |****************************
c |*****************************
c |******************************
c |*******************************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |*****************************************
c |******************************************
c |********************************************
c |*********************************************
c |**********************************************
c |***********************************************
c |************************************************
c |*************************************************
c |**************************************************
c |****************************************************
c |*****************************************************
c |******************************************************
c |*******************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |***********************************************************
0.69/0.72	c |000100001000000000000000000000000000000000000000000000000$$$$$$|
0.69/0.72	
c |***********************************************************
0.69/0.72	c
0.69/0.72	c main():: nodeCount: 2278
0.69/0.72	c main():: dead ends in main: 8
0.69/0.72	c main():: lookAheadCount: 171571
0.69/0.72	c main():: unitResolveCount: 11592
0.69/0.72	c main():: time=0.720000
0.69/0.72	c main():: necessary_assignments: 198
0.69/0.72	c main():: bin_sat: 0, bin_unsat 0
0.69/0.72	c main():: doublelook: #: 4034, succes #: 1205
0.69/0.72	c main():: doublelook: overall 2.365 of all possible doublelooks executed
0.69/0.72	c main():: doublelook: succesrate: 29.871, average DL_trigger: 47.444
0.69/0.72	c main():: SOLUTION VERIFIED :-)
0.69/0.72	s SATISFIABLE
0.69/0.72	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 -28 29 -30 31 -32 33 34 -35 36 37 38 -40 -41 -43 44 45 -46 47 -48 -49 50 51 52 53 -54 55 -56 59 60 62 63 64 -65 66 67 68 69 70 -71 72 -73 -74 -75 76 77 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 -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 -158 -159 160 -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 -204 205 206 207 208 209 210 -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 -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 -293 295 -296 -297 -298 299 -300 301 -302 -303 -304 305 306 307 -309 310 -311 -312 313 -314 -315 316 -317 318 319 -320 321 322 323 324 326 -327 -328 -329 330 331 -332 333 334 -335 -337 338 339 -340 341 342 -343 -344 -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 -401 -402 -403 404 -405 -406 -407 -408 409 411 412 413 -414 415 416 417 418 419 420 421 -422 423 424 -425 -426 -427 -430 431 -432 -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 -477 -478 -479 480 -481 -482 483 484 485 -486 487 488 -489 490 -491 492 -493 -494 -495 496 497 498 500 -501 502 503 -504 -506 507 -508 -509 510 511 512 513 -514 -515 -516 517 518 519 -520 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-1518206-1238296736/watcher-1518206-1238296736 -o /tmp/evaluation-result-1518206-1238296736/solver-1518206-1238296736 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/march_nn HOME/instance-1518206-1238296736.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: 0.92 0.98 0.99 3/64 19802
/proc/meminfo: memFree=657992/2055920 swapFree=4178100/4192956
[pid=19802] ppid=19800 vsize=976 CPUtime=0
/proc/19802/stat : 19802 (march_nn) R 19800 19802 14708 0 -1 4194304 142 0 0 0 0 0 0 0 18 0 1 0 1102339489 999424 126 1992294400 134512640 135197250 4294956240 18446744073709551615 134687817 0 0 4096 0 0 0 0 17 1 0 0
/proc/19802/statm: 245 127 63 167 0 76 0

[startup+0.083176 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 19802
/proc/meminfo: memFree=657992/2055920 swapFree=4178100/4192956
[pid=19802] ppid=19800 vsize=1900 CPUtime=0.08
/proc/19802/stat : 19802 (march_nn) R 19800 19802 14708 0 -1 4194304 310 0 0 0 8 0 0 0 18 0 1 0 1102339489 1945600 293 1992294400 134512640 135197250 4294956240 18446744073709551615 134541916 0 0 4096 0 0 0 0 17 1 0 0
/proc/19802/statm: 475 293 93 167 0 306 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 1900

[startup+0.101178 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 19802
/proc/meminfo: memFree=657992/2055920 swapFree=4178100/4192956
[pid=19802] ppid=19800 vsize=1900 CPUtime=0.09
/proc/19802/stat : 19802 (march_nn) R 19800 19802 14708 0 -1 4194304 311 0 0 0 9 0 0 0 18 0 1 0 1102339489 1945600 294 1992294400 134512640 135197250 4294956240 18446744073709551615 134617856 0 0 4096 0 0 0 0 17 1 0 0
/proc/19802/statm: 475 294 93 167 0 306 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 1900

[startup+0.301197 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 19802
/proc/meminfo: memFree=657992/2055920 swapFree=4178100/4192956
[pid=19802] ppid=19800 vsize=1900 CPUtime=0.29
/proc/19802/stat : 19802 (march_nn) R 19800 19802 14708 0 -1 4194304 330 0 0 0 29 0 0 0 19 0 1 0 1102339489 1945600 313 1992294400 134512640 135197250 4294956240 18446744073709551615 134525333 0 0 4096 0 0 0 0 17 1 0 0
/proc/19802/statm: 475 313 93 167 0 306 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1900

[startup+0.701237 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 19802
/proc/meminfo: memFree=657992/2055920 swapFree=4178100/4192956
[pid=19802] ppid=19800 vsize=2044 CPUtime=0.69
/proc/19802/stat : 19802 (march_nn) R 19800 19802 14708 0 -1 4194304 348 0 0 0 69 0 0 0 22 0 1 0 1102339489 2093056 331 1992294400 134512640 135197250 4294956240 18446744073709551615 134542045 0 0 4096 0 0 0 0 17 1 0 0
/proc/19802/statm: 511 331 93 167 0 342 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 2044

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

Child status: 10
Real time (s): 0.726131
CPU time (s): 0.725888
CPU user time (s): 0.723889
CPU system time (s): 0.001999
CPU usage (%): 99.9665
Max. virtual memory (cumulated for all children) (KiB): 2044

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.723889
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= 365
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 0.002999 second user time and 0.004999 second system time

The end

Launcher Data 

Begin job on node18 at 2009-03-29 05:18:56
IDJOB=1518206
IDBENCH=70660
IDSOLVER=522
FILE ID=node18/1518206-1238296736
PBS_JOBID= 9060977
Free space on /tmp= 66200 MiB

SOLVER NAME= march_nn nn
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/520/unif-k3-r4.25-v520-c2210-S1161147107-031.cnf
COMMAND LINE= HOME/march_nn BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1518206-1238296736/watcher-1518206-1238296736 -o /tmp/evaluation-result-1518206-1238296736/solver-1518206-1238296736 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/march_nn HOME/instance-1518206-1238296736.cnf

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

MD5SUM BENCH= 4cc7ee2f20081e6ebd36addd568f2c4e
RANDOM SEED=2047245703

node18.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	: 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		: 3000.214
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:        658408 kB
Buffers:         99984 kB
Cached:        1191504 kB
SwapCached:       8808 kB
Active:         184372 kB
Inactive:      1119632 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        658408 kB
SwapTotal:     4192956 kB
SwapFree:      4178100 kB
Dirty:             800 kB
Writeback:           0 kB
Mapped:          16308 kB
Slab:            79516 kB
Committed_AS:  2949864 kB
PageTables:       1376 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= 66200 MiB
End job on node18 at 2009-03-29 05:18:57