Trace number 1523928

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
Hybrid2 2009-03-22SAT 0.12298 0.127069

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/540/
unif-k3-r4.25-v540-c2295-S1332067449-041.cnf
MD5SUM2b606655a01fc0a35cd7131dc9f54b92
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.020996
Satisfiable
(Un)Satisfiability was proved
Number of variables540
Number of clauses2295
Sum of the clauses size6885
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32295
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.10/0.12	c try 1 flip j 104725
0.10/0.12	c A solution is found
0.10/0.12	s SATISFIABLE
0.10/0.12	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 -500 501 502 503 -504 505 -506 -507 -508 -509 510 -511 -512 513 -514 -515 516 517 518 519 -520 521 522 523 524 525 -526 527 -528 529 -530 531 532 -533 534 -535 -536 537 -538 539 540 
0.10/0.12	v 0 
0.10/0.12	c Done (mycputime is 0.120 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-1523928-1238586391/watcher-1523928-1238586391 -o /tmp/evaluation-result-1523928-1238586391/solver-1523928-1238586391 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/Hybrid2 HOME/instance-1523928-1238586391.cnf 376292044 

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: 2.00 2.02 2.00 4/86 1259
/proc/meminfo: memFree=1663952/2055924 swapFree=4179644/4192956
[pid=1259] ppid=1257 vsize=451072 CPUtime=0
/proc/1259/stat : 1259 (Hybrid2) R 1257 1259 841 0 -1 4194304 145 0 0 0 0 0 0 0 21 0 1 0 484969553 461897728 129 1992294400 134512640 135106774 4294956208 18446744073709551615 134519794 0 0 4096 0 0 0 0 17 1 0 0
/proc/1259/statm: 112768 129 53 145 0 111644 0

[startup+0.107014 s]
/proc/loadavg: 2.00 2.02 2.00 4/86 1259
/proc/meminfo: memFree=1663952/2055924 swapFree=4179644/4192956
[pid=1259] ppid=1257 vsize=454972 CPUtime=0.1
/proc/1259/stat : 1259 (Hybrid2) R 1257 1259 841 0 -1 4194304 202 0 0 0 10 0 0 0 22 0 1 0 484969553 465891328 186 1992294400 134512640 135106774 4294956208 18446744073709551615 134528456 0 0 4096 0 0 0 0 17 0 0 0
/proc/1259/statm: 113743 186 56 145 0 112619 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 454972

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

[startup+0.107014 s]
/proc/loadavg: 2.00 2.02 2.00 4/86 1259
/proc/meminfo: memFree=1663952/2055924 swapFree=4179644/4192956
[pid=1259] ppid=1257 vsize=454972 CPUtime=0.1
/proc/1259/stat : 1259 (Hybrid2) R 1257 1259 841 0 -1 4194304 202 0 0 0 10 0 0 0 22 0 1 0 484969553 465891328 186 1992294400 134512640 135106774 4294956208 18446744073709551615 134528456 0 0 4096 0 0 0 0 17 0 0 0
/proc/1259/statm: 113743 186 56 145 0 112619 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 454972

Child status: 10
Real time (s): 0.127069
CPU time (s): 0.12298
CPU user time (s): 0.121981
CPU system time (s): 0.000999
CPU usage (%): 96.7821
Max. virtual memory (cumulated for all children) (KiB): 454972

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.121981
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= 221
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= 4

runsolver used 0.004999 second user time and 0.006998 second system time

The end

Launcher Data 

Begin job on node83 at 2009-04-01 13:46:31
IDJOB=1523928
IDBENCH=70707
IDSOLVER=530
FILE ID=node83/1523928-1238586391
PBS_JOBID= 9062209
Free space on /tmp= 66508 MiB

SOLVER NAME= Hybrid2 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/540/unif-k3-r4.25-v540-c2295-S1332067449-041.cnf
COMMAND LINE= HOME/Hybrid2 BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1523928-1238586391/watcher-1523928-1238586391 -o /tmp/evaluation-result-1523928-1238586391/solver-1523928-1238586391 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/Hybrid2 HOME/instance-1523928-1238586391.cnf 376292044

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

MD5SUM BENCH= 2b606655a01fc0a35cd7131dc9f54b92
RANDOM SEED=376292044

node83.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		: 3000.268
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		: 3000.268
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	: 5996.54
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055924 kB
MemFree:       1664368 kB
Buffers:         78076 kB
Cached:         218844 kB
SwapCached:       7584 kB
Active:         210856 kB
Inactive:       104664 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055924 kB
LowFree:       1664368 kB
SwapTotal:     4192956 kB
SwapFree:      4179644 kB
Dirty:            4608 kB
Writeback:           0 kB
Mapped:          26052 kB
Slab:            60088 kB
Committed_AS:  1229832 kB
PageTables:       2680 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= 66500 MiB
End job on node83 at 2009-04-01 13:46:31