Trace number 1518985

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 0.079986 0.079985

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/460/
unif-k3-r4.25-v460-c1955-S321371087-018.cnf
MD5SUMb036614b8a0cd434fa1df7a69038371b
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.007998
Satisfiable
(Un)Satisfiability was proved
Number of variables460
Number of clauses1955
Sum of the clauses size5865
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31955
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 460 variables and 1955 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, 4 satisfied and 0 duplicate clauses
0.00/0.02	c preprocessing fase I completed:: there are now 459 free variables and 1951 clauses.
0.00/0.02	c stat :: sign balance is biased by 0.521
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 148 duplicate clauses
0.00/0.02	c resolvent_look() :: found 75 resolvents
0.00/0.02	c lessRedundantTransformation():: nothing to be done.
0.00/0.02	c transformTo3SAT():: you gave me 460 variables and 2026 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 460 variabels and 2026 clauses.
0.00/0.02	c main():: clause / variable ratio: ( 2026 / 460 ) = 4.40
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 = 459
0.00/0.02	c dynamic_preselect_setsize :: off
0.00/0.02	c main():: all systems go!
0.00/0.02	c |----------------------------------------------------------------|
0.03/0.07	c |.000000000000000000000001000001000000000$$$$$$$$$$$$$$$$$$$$$$$$|
0.03/0.07	
c |
0.03/0.07	c
0.03/0.07	c main():: nodeCount: 128
0.03/0.07	c main():: dead ends in main: 9
0.03/0.07	c main():: lookAheadCount: 9258
0.03/0.07	c main():: unitResolveCount: 2486
0.03/0.07	c main():: time=0.070000
0.03/0.07	c main():: necessary_assignments: 47
0.03/0.07	c main():: bin_sat: 0, bin_unsat 0
0.03/0.07	c main():: doublelook: #: 387, succes #: 229
0.03/0.07	c main():: doublelook: overall 4.300 of all possible doublelooks executed
0.03/0.07	c main():: doublelook: succesrate: 59.173, average DL_trigger: 37.898
0.03/0.07	c main():: SOLUTION VERIFIED :-)
0.03/0.07	s SATISFIABLE
0.03/0.07	v 1 2 3 4 -5 6 7 -8 -9 -10 11 12 13 -14 15 16 -18 19 20 21 -22 -23 -24 25 26 -27 28 29 -30 -31 -32 36 37 38 39 40 -41 -43 44 45 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 89 90 91 92 -93 -94 95 96 -97 98 99 -100 101 -102 103 -104 105 -106 -107 -108 110 111 112 113 114 -115 116 117 118 -119 -120 121 -122 123 124 -125 126 -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 -178 -179 180 -181 -182 -183 184 -185 -187 188 -189 -190 -191 -192 -193 194 -195 196 197 198 -199 -200 201 202 -203 204 205 206 207 -208 -209 211 212 -213 -214 215 -216 217 218 -219 -220 -221 -222 -223 224 -225 226 227 -228 229 -230 -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 -264 265 266 268 -269 -270 -271 -272 -274 -275 276 -277 278 -279 280 281 282 -283 -284 -285 286 287 288 289 290 -291 292 -293 294 -295 -296 -298 299 300 -301 -302 -303 -304 305 306 -307 308 309 -310 311 312 313 -314 315 316 317 318 319 -320 -321 -323 324 325 -326 -327 328 -329 330 -331 332 333 -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 -386 -387 -388 389 390 391 -392 393 394 -395 396 -397 -398 399 -400 -401 402 -403 404 405 -406 -407 408 410 -411 -412 -413 -414 415 417 418 -419 420 -421 -422 423 424 425 426 -427 428 429 430 -431 -432 433 -434 435 -436 -437 438 -440 -441 442 443 -444 -445 446 -447 -448 -449 450 451 -452 -453 -454 455 -456 457 458 -459 -460 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-1518985-1238306922/watcher-1518985-1238306922 -o /tmp/evaluation-result-1518985-1238306922/solver-1518985-1238306922 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/march_hi HOME/instance-1518985-1238306922.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 0.98 0.99 3/64 21244
/proc/meminfo: memFree=1823984/2055920 swapFree=4177692/4192956
[pid=21244] ppid=21242 vsize=980 CPUtime=0
/proc/21244/stat : 21244 (march_hi) R 21242 21244 20906 0 -1 4194304 144 0 0 0 0 0 0 0 18 0 1 0 1103358441 1003520 127 1992294400 134512640 135197378 4294956240 18446744073709551615 134565228 0 0 4096 0 0 0 0 17 1 0 0
/proc/21244/statm: 245 127 65 167 0 76 0

[startup+0.041485 s]
/proc/loadavg: 0.99 0.98 0.99 3/64 21244
/proc/meminfo: memFree=1823984/2055920 swapFree=4177692/4192956
[pid=21244] ppid=21242 vsize=1688 CPUtime=0.03
/proc/21244/stat : 21244 (march_hi) R 21242 21244 20906 0 -1 4194304 281 0 0 0 3 0 0 0 18 0 1 0 1103358441 1728512 264 1992294400 134512640 135197378 4294956240 18446744073709551615 134597261 0 0 4096 0 0 0 0 17 1 0 0
/proc/21244/statm: 422 264 91 167 0 253 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 1688

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

[startup+0.041485 s]
/proc/loadavg: 0.99 0.98 0.99 3/64 21244
/proc/meminfo: memFree=1823984/2055920 swapFree=4177692/4192956
[pid=21244] ppid=21242 vsize=1688 CPUtime=0.03
/proc/21244/stat : 21244 (march_hi) R 21242 21244 20906 0 -1 4194304 281 0 0 0 3 0 0 0 18 0 1 0 1103358441 1728512 264 1992294400 134512640 135197378 4294956240 18446744073709551615 134597261 0 0 4096 0 0 0 0 17 1 0 0
/proc/21244/statm: 422 264 91 167 0 253 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 1688

Child status: 10
Real time (s): 0.079985
CPU time (s): 0.079986
CPU user time (s): 0.078987
CPU system time (s): 0.000999
CPU usage (%): 100.001
Max. virtual memory (cumulated for all children) (KiB): 1688

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.078987
system time used= 0.000999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 297
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 0.004999 second user time and 0.003999 second system time

The end

Launcher Data 

Begin job on node13 at 2009-03-29 08:08:42
IDJOB=1518985
IDBENCH=70725
IDSOLVER=521
FILE ID=node13/1518985-1238306922
PBS_JOBID= 9061012
Free space on /tmp= 66392 MiB

SOLVER NAME= march_hi hi
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/460/unif-k3-r4.25-v460-c1955-S321371087-018.cnf
COMMAND LINE= HOME/march_hi BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1518985-1238306922/watcher-1518985-1238306922 -o /tmp/evaluation-result-1518985-1238306922/solver-1518985-1238306922 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/march_hi HOME/instance-1518985-1238306922.cnf

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

MD5SUM BENCH= b036614b8a0cd434fa1df7a69038371b
RANDOM SEED=35473772

node13.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		: 3000.240
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		: 3000.240
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:       1824400 kB
Buffers:         47676 kB
Cached:         113268 kB
SwapCached:       9056 kB
Active:         100188 kB
Inactive:        71220 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1824400 kB
SwapTotal:     4192956 kB
SwapFree:      4177692 kB
Dirty:             796 kB
Writeback:           0 kB
Mapped:          16104 kB
Slab:            46040 kB
Committed_AS:  2962264 kB
PageTables:       1464 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= 66388 MiB
End job on node13 at 2009-03-29 08:08:42