Trace number 1523971

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 0.586909 0.586004

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/480/
unif-k3-r4.25-v480-c2040-S449556655-088.cnf
MD5SUMa2cac78f4268ad770e0a9e5d4a9fdb69
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.034994
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 

0.50/0.58	c try 1 flip j 366647
0.50/0.58	c A solution is found
0.50/0.58	s SATISFIABLE
0.50/0.58	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 
0.50/0.58	v 0 
0.50/0.58	c Done (mycputime is 0.580 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-1523971-1238591727/watcher-1523971-1238591727 -o /tmp/evaluation-result-1523971-1238591727/solver-1523971-1238591727 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/NCVWr HOME/instance-1523971-1238591727.cnf 3503420 

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 1.02 1.17 3/64 11102
/proc/meminfo: memFree=1288616/2055920 swapFree=4175692/4192956
[pid=11102] ppid=11100 vsize=412012 CPUtime=0
/proc/11102/stat : 11102 (NCVWr) R 11100 11102 10579 0 -1 4194304 146 0 0 0 0 0 0 0 18 0 1 0 1131837871 421900288 130 1992294400 134512640 135113558 4294956208 18446744073709551615 134526255 0 0 4096 0 0 0 0 17 1 0 0
/proc/11102/statm: 103003 130 55 146 0 101878 0

[startup+0.0552259 s]
/proc/loadavg: 1.00 1.02 1.17 3/64 11102
/proc/meminfo: memFree=1288616/2055920 swapFree=4175692/4192956
[pid=11102] ppid=11100 vsize=416044 CPUtime=0.05
/proc/11102/stat : 11102 (NCVWr) R 11100 11102 10579 0 -1 4194304 212 0 0 0 5 0 0 0 18 0 1 0 1131837871 426029056 196 1992294400 134512640 135113558 4294956208 18446744073709551615 134572389 0 0 4096 0 0 0 0 17 1 0 0
/proc/11102/statm: 104011 196 58 146 0 102886 0
Current children cumulated CPU time (s) 0.05
Current children cumulated vsize (KiB) 416044

[startup+0.10123 s]
/proc/loadavg: 1.00 1.02 1.17 3/64 11102
/proc/meminfo: memFree=1288616/2055920 swapFree=4175692/4192956
[pid=11102] ppid=11100 vsize=416044 CPUtime=0.1
/proc/11102/stat : 11102 (NCVWr) R 11100 11102 10579 0 -1 4194304 212 0 0 0 10 0 0 0 18 0 1 0 1131837871 426029056 196 1992294400 134512640 135113558 4294956208 18446744073709551615 134533939 0 0 4096 0 0 0 0 17 1 0 0
/proc/11102/statm: 104011 196 58 146 0 102886 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 416044

[startup+0.301259 s]
/proc/loadavg: 1.00 1.02 1.17 3/64 11102
/proc/meminfo: memFree=1288616/2055920 swapFree=4175692/4192956
[pid=11102] ppid=11100 vsize=416044 CPUtime=0.3
/proc/11102/stat : 11102 (NCVWr) R 11100 11102 10579 0 -1 4194304 212 0 0 0 30 0 0 0 19 0 1 0 1131837871 426029056 196 1992294400 134512640 135113558 4294956208 18446744073709551615 134531755 0 0 4096 0 0 0 0 17 1 0 0
/proc/11102/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+0.501288 s]
/proc/loadavg: 1.00 1.02 1.17 3/64 11102
/proc/meminfo: memFree=1288616/2055920 swapFree=4175692/4192956
[pid=11102] ppid=11100 vsize=416044 CPUtime=0.5
/proc/11102/stat : 11102 (NCVWr) R 11100 11102 10579 0 -1 4194304 212 0 0 0 50 0 0 0 20 0 1 0 1131837871 426029056 196 1992294400 134512640 135113558 4294956208 18446744073709551615 134531629 0 0 4096 0 0 0 0 17 1 0 0
/proc/11102/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): 0.586004
CPU time (s): 0.586909
CPU user time (s): 0.58591
CPU system time (s): 0.000999
CPU usage (%): 100.154
Max. virtual memory (cumulated for all children) (KiB): 416044

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.58591
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= 1

runsolver used 0.003999 second user time and 0.003999 second system time

The end

Launcher Data 

Begin job on node30 at 2009-04-01 15:15:27
IDJOB=1523971
IDBENCH=70721
IDSOLVER=531
FILE ID=node30/1523971-1238591727
PBS_JOBID= 9062235
Free space on /tmp= 66360 MiB

SOLVER NAME= NCVWr 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/480/unif-k3-r4.25-v480-c2040-S449556655-088.cnf
COMMAND LINE= HOME/NCVWr BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1523971-1238591727/watcher-1523971-1238591727 -o /tmp/evaluation-result-1523971-1238591727/solver-1523971-1238591727 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/NCVWr HOME/instance-1523971-1238591727.cnf 3503420

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

MD5SUM BENCH= a2cac78f4268ad770e0a9e5d4a9fdb69
RANDOM SEED=3503420

node30.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		: 3000.260
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		: 3000.260
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:       1289032 kB
Buffers:         95760 kB
Cached:         571652 kB
SwapCached:      11092 kB
Active:         229652 kB
Inactive:       450872 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1289032 kB
SwapTotal:     4192956 kB
SwapFree:      4175692 kB
Dirty:            4616 kB
Writeback:           0 kB
Mapped:          18732 kB
Slab:            72420 kB
Committed_AS:  3260468 kB
PageTables:       1368 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= 66352 MiB
End job on node30 at 2009-04-01 15:15:27