Trace number 1523959

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
NCVWr 2009-03-22SAT 0.029994 0.0300221

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/480/
unif-k3-r4.25-v480-c2040-S1002348653-090.cnf
MD5SUMc369517cece9ac5de13f6444259c5dd0
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.011998
Satisfiable
(Un)Satisfiability was proved
Number of variables480
Number of clauses2040
Sum of the clauses size6120
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32040
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 try 1 flip j 12704
0.00/0.02	c A solution is found
0.00/0.02	s SATISFIABLE
0.00/0.02	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 -461 462 -463 464 -465 -466 467 468 469 470 471 472 473 -474 475 -476 -477 -478 479 480 
0.00/0.02	v 0 
0.00/0.02	c Done (mycputime is 0.020 seconds)

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-1523959-1238590193/watcher-1523959-1238590193 -o /tmp/evaluation-result-1523959-1238590193/solver-1523959-1238590193 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/NCVWr HOME/instance-1523959-1238590193.cnf 1745942527 

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: 1.00 1.00 1.00 3/72 22694
/proc/meminfo: memFree=1614296/2055920 swapFree=4174980/4192956
[pid=22694] ppid=22692 vsize=412012 CPUtime=0
/proc/22694/stat : 22694 (NCVWr) R 22692 22694 22077 0 -1 4194304 146 0 0 0 0 0 0 0 18 0 1 0 1131680589 421900288 130 1992294400 134512640 135113558 4294956208 18446744073709551615 134526487 0 0 4096 0 0 0 0 17 1 0 0
/proc/22694/statm: 103003 130 55 146 0 101878 0

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

Child status: 10
Real time (s): 0.0300221
CPU time (s): 0.029994
CPU user time (s): 0.027995
CPU system time (s): 0.001999
CPU usage (%): 99.9065
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.027995
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= 227
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 0.005999 second system time

The end

Launcher Data 

Begin job on node64 at 2009-04-01 14:49:53
IDJOB=1523959
IDBENCH=70717
IDSOLVER=531
FILE ID=node64/1523959-1238590193
PBS_JOBID= 9062225
Free space on /tmp= 66408 MiB

SOLVER NAME= NCVWr 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/480/unif-k3-r4.25-v480-c2040-S1002348653-090.cnf
COMMAND LINE= HOME/NCVWr BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1523959-1238590193/watcher-1523959-1238590193 -o /tmp/evaluation-result-1523959-1238590193/solver-1523959-1238590193 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/NCVWr HOME/instance-1523959-1238590193.cnf 1745942527

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

MD5SUM BENCH= c369517cece9ac5de13f6444259c5dd0
RANDOM SEED=1745942527

node64.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		: 3000.261
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		: 3000.261
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:       1614776 kB
Buffers:         88992 kB
Cached:         254256 kB
SwapCached:       8788 kB
Active:         210524 kB
Inactive:       143276 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1614776 kB
SwapTotal:     4192956 kB
SwapFree:      4174980 kB
Dirty:            4620 kB
Writeback:           0 kB
Mapped:          16160 kB
Slab:            72224 kB
Committed_AS:  3125516 kB
PageTables:       2000 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= 66404 MiB
End job on node64 at 2009-04-01 14:49:53