Trace number 1518997

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 0.097984 0.0983769

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/460/
unif-k3-r4.25-v460-c1955-S1733990810-090.cnf
MD5SUMcc65c4677bcd52e268abf185559aaea4
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.006998
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, 7 satisfied and 0 duplicate clauses
0.00/0.02	c preprocessing fase I completed:: there are now 459 free variables and 1948 clauses.
0.00/0.02	c stat :: sign balance is biased by 0.422
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 165 duplicate clauses
0.00/0.02	c resolvent_look() :: found 91 resolvents
0.00/0.02	c lessRedundantTransformation():: nothing to be done.
0.00/0.02	c transformTo3SAT():: you gave me 460 variables and 2039 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 2039 clauses.
0.00/0.02	c main():: clause / variable ratio: ( 2039 / 460 ) = 4.43
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 |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| ( 0/999) NodeCount: 132
0.02/0.08	c |----------------------------------------------------------------|
0.02/0.09	c |1000000000000000000000000000000000000000000000000000000000$$$$$|
0.02/0.09	
c |
0.02/0.09	c
0.02/0.09	c main():: nodeCount: 190
0.02/0.09	c main():: dead ends in main: 1
0.02/0.09	c main():: lookAheadCount: 14321
0.02/0.09	c main():: unitResolveCount: 1880
0.02/0.09	c main():: time=0.090000
0.02/0.09	c main():: necessary_assignments: 51
0.02/0.09	c main():: bin_sat: 0, bin_unsat 0
0.02/0.09	c main():: doublelook: #: 520, succes #: 314
0.02/0.09	c main():: doublelook: overall 3.710 of all possible doublelooks executed
0.02/0.09	c main():: doublelook: succesrate: 60.385, average DL_trigger: 44.862
0.02/0.09	c main():: SOLUTION VERIFIED :-)
0.02/0.09	s SATISFIABLE
0.02/0.09	v 1 -2 -3 4 -5 6 -7 -8 9 10 -11 -12 -13 -14 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 -55 -56 57 -58 59 -60 -61 62 63 64 -66 67 -68 -69 -71 72 -73 74 -75 -76 77 -78 79 -80 -81 82 -83 84 85 -86 87 -89 90 91 92 93 -94 95 -96 -97 -98 -99 -100 -101 102 103 -104 -106 107 -108 109 -110 -111 -112 -113 -114 116 -117 -118 119 120 -121 -122 124 126 127 -128 129 -130 -131 -132 -133 -134 135 -136 138 139 -140 141 142 -143 144 -145 146 147 148 -149 -150 -151 152 153 154 -155 -156 157 158 -160 -161 -162 -163 164 165 166 -167 169 170 173 174 -175 -176 177 -178 -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 -215 216 217 219 -220 221 222 -223 -224 -225 226 -227 -229 -230 231 -232 233 -234 -235 237 238 -239 240 241 242 -243 -245 -246 247 248 250 251 252 -254 -255 -256 257 258 259 -260 261 -262 263 -264 -265 -267 -268 -269 -270 -271 272 -273 274 275 -276 277 278 -279 -280 282 -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 -371 372 374 -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 -401 403 404 -405 406 -407 408 -409 -410 -411 412 -413 -414 -415 416 -417 -418 419 -420 421 423 -424 425 426 427 428 429 -430 -431 432 -433 434 -435 436 438 439 -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-1518997-1238307048/watcher-1518997-1238307048 -o /tmp/evaluation-result-1518997-1238307048/solver-1518997-1238307048 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/march_hi HOME/instance-1518997-1238307048.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: 0.93 0.98 0.99 3/64 9371
/proc/meminfo: memFree=1171848/2055920 swapFree=4176604/4192956
[pid=9371] ppid=9369 vsize=980 CPUtime=0
/proc/9371/stat : 9371 (march_hi) R 9369 9371 9075 0 -1 4194304 143 0 0 0 0 0 0 0 18 0 1 0 1103369789 1003520 126 1992294400 134512640 135197378 4294956240 18446744073709551615 134713223 0 0 4096 0 0 0 0 17 1 0 0
/proc/9371/statm: 245 126 65 167 0 76 0

[startup+0.029568 s]
/proc/loadavg: 0.93 0.98 0.99 3/64 9371
/proc/meminfo: memFree=1171848/2055920 swapFree=4176604/4192956
[pid=9371] ppid=9369 vsize=1688 CPUtime=0.02
/proc/9371/stat : 9371 (march_hi) R 9369 9371 9075 0 -1 4194304 262 0 0 0 2 0 0 0 18 0 1 0 1103369789 1728512 245 1992294400 134512640 135197378 4294956240 18446744073709551615 134525358 0 0 4096 0 0 0 0 17 1 0 0
/proc/9371/statm: 422 245 91 167 0 253 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 1688

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

[startup+0.029568 s]
/proc/loadavg: 0.93 0.98 0.99 3/64 9371
/proc/meminfo: memFree=1171848/2055920 swapFree=4176604/4192956
[pid=9371] ppid=9369 vsize=1688 CPUtime=0.02
/proc/9371/stat : 9371 (march_hi) R 9369 9371 9075 0 -1 4194304 262 0 0 0 2 0 0 0 18 0 1 0 1103369789 1728512 245 1992294400 134512640 135197378 4294956240 18446744073709551615 134525358 0 0 4096 0 0 0 0 17 1 0 0
/proc/9371/statm: 422 245 91 167 0 253 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 1688

Child status: 10
Real time (s): 0.0983769
CPU time (s): 0.097984
CPU user time (s): 0.096985
CPU system time (s): 0.000999
CPU usage (%): 99.6006
Max. virtual memory (cumulated for all children) (KiB): 1688

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.096985
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= 316
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 0.005999 second user time and 0.002999 second system time

The end

Launcher Data 

Begin job on node34 at 2009-03-29 08:10:48
IDJOB=1518997
IDBENCH=70726
IDSOLVER=521
FILE ID=node34/1518997-1238307048
PBS_JOBID= 9061041
Free space on /tmp= 66352 MiB

SOLVER NAME= march_hi hi
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/460/unif-k3-r4.25-v460-c1955-S1733990810-090.cnf
COMMAND LINE= HOME/march_hi BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1518997-1238307048/watcher-1518997-1238307048 -o /tmp/evaluation-result-1518997-1238307048/solver-1518997-1238307048 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/march_hi HOME/instance-1518997-1238307048.cnf

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

MD5SUM BENCH= cc65c4677bcd52e268abf185559aaea4
RANDOM SEED=1775942100

node34.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		: 3000.259
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		: 3000.259
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:       1172264 kB
Buffers:        101680 kB
Cached:         679036 kB
SwapCached:      10192 kB
Active:         131168 kB
Inactive:       661188 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1172264 kB
SwapTotal:     4192956 kB
SwapFree:      4176604 kB
Dirty:             988 kB
Writeback:           0 kB
Mapped:          17244 kB
Slab:            77260 kB
Committed_AS:  2597196 kB
PageTables:       1388 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= 66352 MiB
End job on node34 at 2009-03-29 08:10:48