Trace number 298287

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, and are wall clock time (not CPU 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
FH 2007-02-08SAT 0.046992 0.0484859

General information on the benchmark

Namerandom/OnTreshold/3SAT/v500/
unif-k3-r4.26-v500-c2130-S1965764400-19.SAT.shuffled.cnf
MD5SUMa8fcc21a1c405b91adf9e5bdbb6b4ddd
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.021995
Satisfiable
(Un)Satisfiability was proved
Number of variables500
Number of clauses2130
Sum of the clauses size6390
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32130
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.04	c try 1 flip j 25158
0.00/0.04	c A solution is found
0.00/0.04	s SATISFIABLE
0.00/0.04	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 -480 481 -482 -483 484 -485 -486 -487 488 489 -490 -491 492 493 -494 -495 -496 497 498 -499 -500 
0.00/0.04	v 0 
0.00/0.04	c Done (mycputime is 0.000 seconds)

Verifier Data (download as text)

OK

Watcher Data (download as text)

runsolver version 3.2.0 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node19/watcher-298287-1171853273 -o ROOT/results/node19/solver-298287-1171853273 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/298287-1171853273/FH /tmp/evaluation/298287-1171853273/instance-298287-1171853273.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 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: 0.85 0.97 0.98 3/77 28494
/proc/meminfo: memFree=1383504/2055920 swapFree=4192812/4192956
[pid=28494] ppid=28492 vsize=244848 CPUtime=0
/proc/28494/stat : 28494 (FH) R 28492 28494 28344 0 -1 4194304 125 0 0 0 0 0 0 0 18 0 1 0 205281284 250724352 108 18446744073709551615 134512640 134936988 4294956640 18446744073709551615 134523346 0 0 4096 0 0 0 0 17 1 0 0
/proc/28494/statm: 61212 108 36 103 0 60716 0

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

Child status: 10
Real time (s): 0.0484859
CPU time (s): 0.046992
CPU user time (s): 0.045993
CPU system time (s): 0.000999
CPU usage (%): 96.9189
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.045993
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= 212
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= 8
involuntary context switches= 0

runsolver used 0.001999 second user time and 0.006998 second system time

The end

Launcher Data (download as text)

Begin job on node19 on Mon Feb 19 02:47:53 UTC 2007

IDJOB= 298287
IDBENCH= 19982
IDSOLVER= 117
FILE ID= node19/298287-1171853273

PBS_JOBID= 3839407

Free space on /tmp= 66540 MiB

SOLVER NAME= FH 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/OnTreshold/3SAT/v500/unif-k3-r4.26-v500-c2130-S1965764400-19.SAT.shuffled.cnf
COMMAND LINE= /tmp/evaluation/298287-1171853273/FH /tmp/evaluation/298287-1171853273/instance-298287-1171853273.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node19/watcher-298287-1171853273 -o ROOT/results/node19/solver-298287-1171853273 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/298287-1171853273/FH /tmp/evaluation/298287-1171853273/instance-298287-1171853273.cnf            

META MD5SUM SOLVER= 4ad8950502569bcbd9dc3ae819b6eefe
MD5SUM BENCH=  a8fcc21a1c405b91adf9e5bdbb6b4ddd

RANDOM SEED= 738347990

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node19.alineos.net 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005 x86_64 x86_64 x86_64 GNU/Linux

/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	: 5931.00
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:       1383976 kB
Buffers:         55544 kB
Cached:         499336 kB
SwapCached:          0 kB
Active:         286552 kB
Inactive:       311784 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1383976 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            6340 kB
Writeback:           0 kB
Mapped:          62360 kB
Slab:            59188 kB
Committed_AS:   844676 kB
PageTables:       1756 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= 66540 MiB

End job on node19 on Mon Feb 19 02:47:53 UTC 2007