Trace number 1631319

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
iPAWS 2009-03-22SAT 0.013997 0.014834

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 benchmark0.013997
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 

0.00/0.01	s SATISFIABLE
0.00/0.01	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 0
0.00/0.01	c input file instance-1631319-1240142254.cnf, flips 2757

Verifier Data 

OK

Watcher Data 

runsolver version 3.2.9 (svn:492) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1631319-1240142254/watcher-1631319-1240142254 -o /tmp/evaluation-result-1631319-1240142254/solver-1631319-1240142254 -C 5000 -W 6000 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1631319-1240142254.cnf 1200515165 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 5000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 5030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 6000 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 2/65 25169
/proc/meminfo: memFree=825320/2055912 swapFree=4192956/4192956
[pid=25169] ppid=25167 vsize=335916 CPUtime=0
/proc/25169/stat : 25169 (iPAWS) R 25167 25169 24413 0 -1 4194304 480 0 0 0 0 0 0 0 20 0 1 0 42254384 343977984 464 1992294400 134512640 135114423 4294956224 18446744073709551615 134734049 0 0 4096 0 0 0 0 17 1 0 0
/proc/25169/statm: 83979 464 54 146 0 83831 0

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

Child status: 0
Real time (s): 0.014834
CPU time (s): 0.013997
CPU user time (s): 0.007998
CPU system time (s): 0.005999
CPU usage (%): 94.3574
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.007998
system time used= 0.005999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 938
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= 1
involuntary context switches= 1

runsolver used 0.002999 second user time and 0.003999 second system time

The end

Launcher Data 

Begin job on node78 at 2009-04-19 13:57:34
IDJOB=1631319
IDBENCH=70725
IDSOLVER=588
FILE ID=node78/1631319-1240142254
PBS_JOBID= 9157875
Free space on /tmp= 126644 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/460/unif-k3-r4.25-v460-c1955-S321371087-018.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1631319-1240142254/watcher-1631319-1240142254 -o /tmp/evaluation-result-1631319-1240142254/solver-1631319-1240142254 -C 5000 -W 6000 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1631319-1240142254.cnf 1200515165

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= b036614b8a0cd434fa1df7a69038371b
RANDOM SEED=1200515165

node78.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		: 3000.243
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		: 3000.243
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:      2055912 kB
MemFree:        825736 kB
Buffers:         87272 kB
Cached:        1039896 kB
SwapCached:          0 kB
Active:         257164 kB
Inactive:       884888 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055912 kB
LowFree:        825736 kB
SwapTotal:     4192956 kB
SwapFree:      4192956 kB
Dirty:             712 kB
Writeback:           0 kB
Mapped:          24576 kB
Slab:            73884 kB
Committed_AS:   175708 kB
PageTables:       1428 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264960 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 126644 MiB
End job on node78 at 2009-04-19 13:57:34