Trace number 1522334

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
iPAWS 2009-03-22SAT 0.084986 0.0856571

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/460/
unif-k3-r4.25-v460-c1955-S1555503917-029.cnf
MD5SUM19cceacad52a786b8f9d29887aa918f2
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 

0.02/0.08	s SATISFIABLE
0.02/0.08	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
0.02/0.08	c input file instance-1522334-1238594408.cnf, flips 65623

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-1522334-1238594408/watcher-1522334-1238594408 -o /tmp/evaluation-result-1522334-1238594408/solver-1522334-1238594408 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1522334-1238594408.cnf 1512158778 

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 1.01 1.17 2/76 7848
/proc/meminfo: memFree=1352904/2055920 swapFree=4127460/4192956
[pid=7848] ppid=7846 vsize=335916 CPUtime=0
/proc/7848/stat : 7848 (iPAWS) R 7846 7848 7327 0 -1 4194304 594 0 0 0 0 0 0 0 20 0 1 0 1132101743 343977984 578 1992294400 134512640 135114423 4294956208 18446744073709551615 134534175 0 0 4096 0 0 0 0 17 1 0 0
/proc/7848/statm: 83979 584 54 146 0 83831 0

[startup+0.0330559 s]
/proc/loadavg: 1.00 1.01 1.17 2/76 7848
/proc/meminfo: memFree=1352904/2055920 swapFree=4127460/4192956
[pid=7848] ppid=7846 vsize=335916 CPUtime=0.02
/proc/7848/stat : 7848 (iPAWS) R 7846 7848 7327 0 -1 4194304 930 0 0 0 2 0 0 0 20 0 1 0 1132101743 343977984 914 1992294400 134512640 135114423 4294956208 18446744073709551615 134546177 0 0 4096 0 0 0 0 17 1 0 0
/proc/7848/statm: 83979 914 57 146 0 83831 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 335916

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

[startup+0.0330559 s]
/proc/loadavg: 1.00 1.01 1.17 2/76 7848
/proc/meminfo: memFree=1352904/2055920 swapFree=4127460/4192956
[pid=7848] ppid=7846 vsize=335916 CPUtime=0.02
/proc/7848/stat : 7848 (iPAWS) R 7846 7848 7327 0 -1 4194304 930 0 0 0 2 0 0 0 20 0 1 0 1132101743 343977984 914 1992294400 134512640 135114423 4294956208 18446744073709551615 134546177 0 0 4096 0 0 0 0 17 1 0 0
/proc/7848/statm: 83979 914 57 146 0 83831 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 335916

Child status: 0
Real time (s): 0.0856571
CPU time (s): 0.084986
CPU user time (s): 0.079987
CPU system time (s): 0.004999
CPU usage (%): 99.2166
Max. virtual memory (cumulated for all children) (KiB): 335916

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.079987
system time used= 0.004999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 938
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 0.003999 second user time and 0.007998 second system time

The end

Launcher Data 

Begin job on node63 at 2009-04-01 16:00:08
IDJOB=1522334
IDBENCH=70729
IDSOLVER=516
FILE ID=node63/1522334-1238594408
PBS_JOBID= 9062250
Free space on /tmp= 66484 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/460/unif-k3-r4.25-v460-c1955-S1555503917-029.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1522334-1238594408/watcher-1522334-1238594408 -o /tmp/evaluation-result-1522334-1238594408/solver-1522334-1238594408 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1522334-1238594408.cnf 1512158778

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

MD5SUM BENCH= 19cceacad52a786b8f9d29887aa918f2
RANDOM SEED=1512158778

node63.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		: 3000.285
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		: 3000.285
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:      2055920 kB
MemFree:       1353384 kB
Buffers:         97292 kB
Cached:         464448 kB
SwapCached:      55360 kB
Active:         220448 kB
Inactive:       398152 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1353384 kB
SwapTotal:     4192956 kB
SwapFree:      4127460 kB
Dirty:             708 kB
Writeback:           0 kB
Mapped:          14620 kB
Slab:            68492 kB
Committed_AS:  3430908 kB
PageTables:       2312 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264960 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66484 MiB
End job on node63 at 2009-04-01 16:00:08