Trace number 1523998

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 0.019996 0.020152

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/460/
unif-k3-r4.25-v460-c1955-S1546885609-031.cnf
MD5SUMab528a6ad10c0959e2d17075599d3c26
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.014997
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 

0.00/0.01	c try 1 flip j 7360
0.00/0.01	c A solution is found
0.00/0.01	s SATISFIABLE
0.00/0.01	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 
0.00/0.02	v 0 
0.00/0.02	c Done (mycputime is 0.010 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-1523998-1238594912/watcher-1523998-1238594912 -o /tmp/evaluation-result-1523998-1238594912/solver-1523998-1238594912 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/NCVWr HOME/instance-1523998-1238594912.cnf 583985532 

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 3/64 1196
/proc/meminfo: memFree=1206952/2055920 swapFree=4176996/4192956
[pid=1196] ppid=1194 vsize=412012 CPUtime=0
/proc/1196/stat : 1196 (NCVWr) R 1194 1196 570 0 -1 4194304 144 0 0 0 0 0 0 0 18 0 1 0 1132153282 421900288 128 1992294400 134512640 135113558 4294956208 18446744073709551615 134526273 0 0 4096 0 0 0 0 17 1 0 0
/proc/1196/statm: 103003 128 55 146 0 101878 0

[startup+0.010835 s]
/proc/loadavg: 1.00 1.00 1.00 3/64 1196
/proc/meminfo: memFree=1206952/2055920 swapFree=4176996/4192956
[pid=1196] ppid=1194 vsize=416048 CPUtime=0
/proc/1196/stat : 1196 (NCVWr) R 1194 1196 570 0 -1 4194304 209 0 0 0 0 0 0 0 18 0 1 0 1132153282 426033152 193 1992294400 134512640 135113558 4294956208 18446744073709551615 134534242 0 0 4096 0 0 0 0 17 1 0 0
/proc/1196/statm: 104012 193 58 146 0 102887 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 416048

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

[startup+0.010835 s]
/proc/loadavg: 1.00 1.00 1.00 3/64 1196
/proc/meminfo: memFree=1206952/2055920 swapFree=4176996/4192956
[pid=1196] ppid=1194 vsize=416048 CPUtime=0
/proc/1196/stat : 1196 (NCVWr) R 1194 1196 570 0 -1 4194304 209 0 0 0 0 0 0 0 18 0 1 0 1132153282 426033152 193 1992294400 134512640 135113558 4294956208 18446744073709551615 134534242 0 0 4096 0 0 0 0 17 1 0 0
/proc/1196/statm: 104012 193 58 146 0 102887 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 416048

Child status: 10
Real time (s): 0.020152
CPU time (s): 0.019996
CPU user time (s): 0.018997
CPU system time (s): 0.000999
CPU usage (%): 99.2259
Max. virtual memory (cumulated for all children) (KiB): 416048

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.018997
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= 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= 0

runsolver used 0.002999 second user time and 0.006998 second system time

The end

Launcher Data 

Begin job on node50 at 2009-04-01 16:08:32
IDJOB=1523998
IDBENCH=70730
IDSOLVER=531
FILE ID=node50/1523998-1238594912
PBS_JOBID= 9068305
Free space on /tmp= 64220 MiB

SOLVER NAME= NCVWr 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/460/unif-k3-r4.25-v460-c1955-S1546885609-031.cnf
COMMAND LINE= HOME/NCVWr BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1523998-1238594912/watcher-1523998-1238594912 -o /tmp/evaluation-result-1523998-1238594912/solver-1523998-1238594912 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/NCVWr HOME/instance-1523998-1238594912.cnf 583985532

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

MD5SUM BENCH= ab528a6ad10c0959e2d17075599d3c26
RANDOM SEED=583985532

node50.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		: 3000.238
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		: 3000.238
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:       1207432 kB
Buffers:        107640 kB
Cached:         633296 kB
SwapCached:       9920 kB
Active:         232916 kB
Inactive:       519656 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1207432 kB
SwapTotal:     4192956 kB
SwapFree:      4176996 kB
Dirty:            4692 kB
Writeback:           0 kB
Mapped:          17280 kB
Slab:            81848 kB
Committed_AS:  3241948 kB
PageTables:       1456 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= 64216 MiB
End job on node50 at 2009-04-01 16:08:32