Trace number 1523980

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 0.19197 0.192345

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/460/
unif-k3-r4.25-v460-c1955-S2067258640-036.cnf
MD5SUMd816900b718754e89a88330965d80e86
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.051991
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 

0.09/0.19	c try 1 flip j 125559
0.09/0.19	c A solution is found
0.09/0.19	s SATISFIABLE
0.09/0.19	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 
0.09/0.19	v 0 
0.09/0.19	c Done (mycputime is 0.190 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-1523980-1238592848/watcher-1523980-1238592848 -o /tmp/evaluation-result-1523980-1238592848/solver-1523980-1238592848 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/NCVWr HOME/instance-1523980-1238592848.cnf 446896301 

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 1.05 1.17 3/66 13437
/proc/meminfo: memFree=1269080/2055920 swapFree=4176412/4192956
[pid=13437] ppid=13435 vsize=412012 CPUtime=0
/proc/13437/stat : 13437 (NCVWr) R 13435 13437 13313 0 -1 4194304 144 0 0 0 0 0 0 0 18 0 1 0 1131947718 421900288 128 1992294400 134512640 135113558 4294956208 18446744073709551615 134526373 0 0 4096 0 0 0 0 17 1 0 0
/proc/13437/statm: 103003 128 55 146 0 101878 0

[startup+0.063693 s]
/proc/loadavg: 1.00 1.05 1.17 3/66 13437
/proc/meminfo: memFree=1269080/2055920 swapFree=4176412/4192956
[pid=13437] ppid=13435 vsize=416048 CPUtime=0.06
/proc/13437/stat : 13437 (NCVWr) R 13435 13437 13313 0 -1 4194304 209 0 0 0 6 0 0 0 18 0 1 0 1131947718 426033152 193 1992294400 134512640 135113558 4294956208 18446744073709551615 134531906 0 0 4096 0 0 0 0 17 1 0 0
/proc/13437/statm: 104012 193 58 146 0 102887 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 416048

[startup+0.101698 s]
/proc/loadavg: 1.00 1.05 1.17 3/66 13437
/proc/meminfo: memFree=1269080/2055920 swapFree=4176412/4192956
[pid=13437] ppid=13435 vsize=416048 CPUtime=0.09
/proc/13437/stat : 13437 (NCVWr) R 13435 13437 13313 0 -1 4194304 209 0 0 0 9 0 0 0 18 0 1 0 1131947718 426033152 193 1992294400 134512640 135113558 4294956208 18446744073709551615 134533604 0 0 4096 0 0 0 0 17 1 0 0
/proc/13437/statm: 104012 193 58 146 0 102887 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 416048

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

Child status: 10
Real time (s): 0.192345
CPU time (s): 0.19197
CPU user time (s): 0.189971
CPU system time (s): 0.001999
CPU usage (%): 99.8051
Max. virtual memory (cumulated for all children) (KiB): 416048

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.189971
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= 224
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= 1

runsolver used 0.003999 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node40 at 2009-04-01 15:34:08
IDJOB=1523980
IDBENCH=70724
IDSOLVER=531
FILE ID=node40/1523980-1238592848
PBS_JOBID= 9068322
Free space on /tmp= 63504 MiB

SOLVER NAME= NCVWr 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/460/unif-k3-r4.25-v460-c1955-S2067258640-036.cnf
COMMAND LINE= HOME/NCVWr BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1523980-1238592848/watcher-1523980-1238592848 -o /tmp/evaluation-result-1523980-1238592848/solver-1523980-1238592848 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/NCVWr HOME/instance-1523980-1238592848.cnf 446896301

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

MD5SUM BENCH= d816900b718754e89a88330965d80e86
RANDOM SEED=446896301

node40.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		: 3000.232
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		: 3000.232
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:       1269496 kB
Buffers:         88556 kB
Cached:         605624 kB
SwapCached:       9688 kB
Active:         213956 kB
Inactive:       491540 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1269496 kB
SwapTotal:     4192956 kB
SwapFree:      4176412 kB
Dirty:            4624 kB
Writeback:           0 kB
Mapped:          17180 kB
Slab:            66908 kB
Committed_AS:  2929640 kB
PageTables:       1476 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= 63500 MiB
End job on node40 at 2009-04-01 15:34:08