Trace number 1523974

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 0.511921 0.511318

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/480/
unif-k3-r4.25-v480-c2040-S1924575376-025.cnf
MD5SUM6fb0ba561e085817334f61be44abbbd8
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.035993
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 

0.50/0.51	c try 1 flip j 338017
0.50/0.51	c A solution is found
0.50/0.51	s SATISFIABLE
0.50/0.51	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 
0.50/0.51	v 0 
0.50/0.51	c Done (mycputime is 0.510 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-1523974-1238592083/watcher-1523974-1238592083 -o /tmp/evaluation-result-1523974-1238592083/solver-1523974-1238592083 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/NCVWr HOME/instance-1523974-1238592083.cnf 1655449593 

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: 1.99 1.85 1.46 3/64 20413
/proc/meminfo: memFree=1533688/2055920 swapFree=4176720/4192956
[pid=20413] ppid=20411 vsize=412012 CPUtime=0
/proc/20413/stat : 20413 (NCVWr) R 20411 20413 20220 0 -1 4194304 146 0 0 0 0 0 0 0 18 0 1 0 1131873346 421900288 130 1992294400 134512640 135113558 4294956208 18446744073709551615 134526317 0 0 4096 0 0 0 0 17 1 0 0
/proc/20413/statm: 103003 130 55 146 0 101878 0

[startup+0.101309 s]
/proc/loadavg: 1.99 1.85 1.46 3/64 20413
/proc/meminfo: memFree=1533688/2055920 swapFree=4176720/4192956
[pid=20413] ppid=20411 vsize=416044 CPUtime=0.1
/proc/20413/stat : 20413 (NCVWr) R 20411 20413 20220 0 -1 4194304 212 0 0 0 10 0 0 0 18 0 1 0 1131873346 426029056 196 1992294400 134512640 135113558 4294956208 18446744073709551615 134531784 0 0 4096 0 0 0 0 17 1 0 0
/proc/20413/statm: 104011 196 58 146 0 102886 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 416044

[startup+0.201324 s]
/proc/loadavg: 1.99 1.85 1.46 3/64 20413
/proc/meminfo: memFree=1533688/2055920 swapFree=4176720/4192956
[pid=20413] ppid=20411 vsize=416044 CPUtime=0.2
/proc/20413/stat : 20413 (NCVWr) R 20411 20413 20220 0 -1 4194304 212 0 0 0 20 0 0 0 18 0 1 0 1131873346 426029056 196 1992294400 134512640 135113558 4294956208 18446744073709551615 134531768 0 0 4096 0 0 0 0 17 1 0 0
/proc/20413/statm: 104011 196 58 146 0 102886 0
Current children cumulated CPU time (s) 0.2
Current children cumulated vsize (KiB) 416044

[startup+0.301339 s]
/proc/loadavg: 1.99 1.85 1.46 3/64 20413
/proc/meminfo: memFree=1533688/2055920 swapFree=4176720/4192956
[pid=20413] ppid=20411 vsize=416044 CPUtime=0.3
/proc/20413/stat : 20413 (NCVWr) R 20411 20413 20220 0 -1 4194304 212 0 0 0 30 0 0 0 19 0 1 0 1131873346 426029056 196 1992294400 134512640 135113558 4294956208 18446744073709551615 134531124 0 0 4096 0 0 0 0 17 1 0 0
/proc/20413/statm: 104011 196 58 146 0 102886 0
Current children cumulated CPU time (s) 0.3
Current children cumulated vsize (KiB) 416044

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

[startup+0.401354 s]
/proc/loadavg: 1.99 1.85 1.46 3/64 20413
/proc/meminfo: memFree=1533688/2055920 swapFree=4176720/4192956
[pid=20413] ppid=20411 vsize=416044 CPUtime=0.4
/proc/20413/stat : 20413 (NCVWr) R 20411 20413 20220 0 -1 4194304 212 0 0 0 40 0 0 0 19 0 1 0 1131873346 426029056 196 1992294400 134512640 135113558 4294956208 18446744073709551615 134531629 0 0 4096 0 0 0 0 17 1 0 0
/proc/20413/statm: 104011 196 58 146 0 102886 0
Current children cumulated CPU time (s) 0.4
Current children cumulated vsize (KiB) 416044

[startup+0.50137 s]
/proc/loadavg: 1.99 1.85 1.46 3/64 20413
/proc/meminfo: memFree=1533688/2055920 swapFree=4176720/4192956
[pid=20413] ppid=20411 vsize=416044 CPUtime=0.5
/proc/20413/stat : 20413 (NCVWr) R 20411 20413 20220 0 -1 4194304 212 0 0 0 50 0 0 0 20 0 1 0 1131873346 426029056 196 1992294400 134512640 135113558 4294956208 18446744073709551615 134531563 0 0 4096 0 0 0 0 17 1 0 0
/proc/20413/statm: 104011 196 58 146 0 102886 0
Current children cumulated CPU time (s) 0.5
Current children cumulated vsize (KiB) 416044

Child status: 10
Real time (s): 0.511318
CPU time (s): 0.511921
CPU user time (s): 0.510922
CPU system time (s): 0.000999
CPU usage (%): 100.118
Max. virtual memory (cumulated for all children) (KiB): 416044

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.510922
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= 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= 2

runsolver used 0.001999 second user time and 0.006998 second system time

The end

Launcher Data 

Begin job on node34 at 2009-04-01 15:21:23
IDJOB=1523974
IDBENCH=70722
IDSOLVER=531
FILE ID=node34/1523974-1238592083
PBS_JOBID= 9068309
Free space on /tmp= 66380 MiB

SOLVER NAME= NCVWr 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/480/unif-k3-r4.25-v480-c2040-S1924575376-025.cnf
COMMAND LINE= HOME/NCVWr BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1523974-1238592083/watcher-1523974-1238592083 -o /tmp/evaluation-result-1523974-1238592083/solver-1523974-1238592083 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/NCVWr HOME/instance-1523974-1238592083.cnf 1655449593

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

MD5SUM BENCH= 6fb0ba561e085817334f61be44abbbd8
RANDOM SEED=1655449593

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:       1534104 kB
Buffers:         90400 kB
Cached:         332208 kB
SwapCached:      10076 kB
Active:         206076 kB
Inactive:       227996 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1534104 kB
SwapTotal:     4192956 kB
SwapFree:      4176720 kB
Dirty:            4612 kB
Writeback:           0 kB
Mapped:          17184 kB
Slab:            73696 kB
Committed_AS:  2801328 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= 66376 MiB
End job on node34 at 2009-04-01 15:21:24