Trace number 1522251

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 3.58545 3.58566

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/500/
unif-k3-r4.25-v500-c2125-S349436298-004.cnf
MD5SUM807de0757f2dbadea1e7b17f93f9b484
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.376942
Satisfiable
(Un)Satisfiability was proved
Number of variables500
Number of clauses2125
Sum of the clauses size6375
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32125
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

3.49/3.58	s SATISFIABLE
3.49/3.58	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 -481 -482 -483 -484 485 486 -487 488 489 -490 491 -492 493 494 495 -496 -497 -498 -499 500 0
3.49/3.58	c input file instance-1522251-1238569592.cnf, flips 2682227

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-1522251-1238569592/watcher-1522251-1238569592 -o /tmp/evaluation-result-1522251-1238569592/solver-1522251-1238569592 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1522251-1238569592.cnf 520750956 

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: 0.92 0.98 0.99 3/64 20563
/proc/meminfo: memFree=1316008/2055920 swapFree=4175308/4192956
[pid=20563] ppid=20561 vsize=335916 CPUtime=0
/proc/20563/stat : 20563 (iPAWS) R 20561 20563 20177 0 -1 4194304 486 0 0 0 0 0 0 0 18 0 1 0 1129621095 343977984 470 1992294400 134512640 135114423 4294956208 18446744073709551615 134533972 0 0 4096 0 0 0 0 17 1 0 0
/proc/20563/statm: 83979 470 54 146 0 83831 0

[startup+0.015274 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 20563
/proc/meminfo: memFree=1316008/2055920 swapFree=4175308/4192956
[pid=20563] ppid=20561 vsize=335916 CPUtime=0.01
/proc/20563/stat : 20563 (iPAWS) R 20561 20563 20177 0 -1 4194304 933 0 0 0 1 0 0 0 18 0 1 0 1129621095 343977984 917 1992294400 134512640 135114423 4294956208 18446744073709551615 134514931 0 0 4096 0 0 0 0 17 1 0 0
/proc/20563/statm: 83979 917 57 146 0 83831 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 335916

[startup+0.101288 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 20563
/proc/meminfo: memFree=1316008/2055920 swapFree=4175308/4192956
[pid=20563] ppid=20561 vsize=335916 CPUtime=0.09
/proc/20563/stat : 20563 (iPAWS) R 20561 20563 20177 0 -1 4194304 933 0 0 0 9 0 0 0 18 0 1 0 1129621095 343977984 917 1992294400 134512640 135114423 4294956208 18446744073709551615 134517144 0 0 4096 0 0 0 0 17 1 0 0
/proc/20563/statm: 83979 917 57 146 0 83831 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 335916

[startup+0.301321 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 20563
/proc/meminfo: memFree=1316008/2055920 swapFree=4175308/4192956
[pid=20563] ppid=20561 vsize=335916 CPUtime=0.29
/proc/20563/stat : 20563 (iPAWS) R 20561 20563 20177 0 -1 4194304 933 0 0 0 29 0 0 0 19 0 1 0 1129621095 343977984 917 1992294400 134512640 135114423 4294956208 18446744073709551615 134554751 0 0 4096 0 0 0 0 17 1 0 0
/proc/20563/statm: 83979 917 57 146 0 83831 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 335916

[startup+0.701389 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 20563
/proc/meminfo: memFree=1316008/2055920 swapFree=4175308/4192956
[pid=20563] ppid=20561 vsize=335916 CPUtime=0.69
/proc/20563/stat : 20563 (iPAWS) R 20561 20563 20177 0 -1 4194304 933 0 0 0 69 0 0 0 22 0 1 0 1129621095 343977984 917 1992294400 134512640 135114423 4294956208 18446744073709551615 134547200 0 0 4096 0 0 0 0 17 1 0 0
/proc/20563/statm: 83979 917 57 146 0 83831 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 335916

[startup+1.50153 s]
/proc/loadavg: 0.92 0.98 0.99 2/65 20564
/proc/meminfo: memFree=1312544/2055920 swapFree=4175308/4192956
[pid=20563] ppid=20561 vsize=335916 CPUtime=1.49
/proc/20563/stat : 20563 (iPAWS) R 20561 20563 20177 0 -1 4194304 933 0 0 0 149 0 0 0 25 0 1 0 1129621095 343977984 917 1992294400 134512640 135114423 4294956208 18446744073709551615 134516646 0 0 4096 0 0 0 0 17 1 0 0
/proc/20563/statm: 83979 917 57 146 0 83831 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 335916

[startup+3.1018 s]
/proc/loadavg: 0.92 0.98 0.99 2/65 20564
/proc/meminfo: memFree=1312352/2055920 swapFree=4175308/4192956
[pid=20563] ppid=20561 vsize=335916 CPUtime=3.09
/proc/20563/stat : 20563 (iPAWS) R 20561 20563 20177 0 -1 4194304 933 0 0 0 309 0 0 0 25 0 1 0 1129621095 343977984 917 1992294400 134512640 135114423 4294956208 18446744073709551615 134517134 0 0 4096 0 0 0 0 17 1 0 0
/proc/20563/statm: 83979 917 57 146 0 83831 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 335916

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

[startup+3.50186 s]
/proc/loadavg: 0.92 0.98 0.99 2/65 20564
/proc/meminfo: memFree=1312352/2055920 swapFree=4175308/4192956
[pid=20563] ppid=20561 vsize=335916 CPUtime=3.49
/proc/20563/stat : 20563 (iPAWS) R 20561 20563 20177 0 -1 4194304 933 0 0 0 349 0 0 0 25 0 1 0 1129621095 343977984 917 1992294400 134512640 135114423 4294956208 18446744073709551615 134516740 0 0 4096 0 0 0 0 17 1 0 0
/proc/20563/statm: 83979 917 57 146 0 83831 0
Current children cumulated CPU time (s) 3.49
Current children cumulated vsize (KiB) 335916

Child status: 0
Real time (s): 3.58566
CPU time (s): 3.58545
CPU user time (s): 3.57846
CPU system time (s): 0.006998
CPU usage (%): 99.9942
Max. virtual memory (cumulated for all children) (KiB): 335916

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 3.57845
system time used= 0.006998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 941
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= 8

runsolver used 0.003999 second user time and 0.014997 second system time

The end

Launcher Data 

Begin job on node55 at 2009-04-01 09:06:32
IDJOB=1522251
IDBENCH=70646
IDSOLVER=516
FILE ID=node55/1522251-1238569592
PBS_JOBID= 9062150
Free space on /tmp= 66304 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/500/unif-k3-r4.25-v500-c2125-S349436298-004.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1522251-1238569592/watcher-1522251-1238569592 -o /tmp/evaluation-result-1522251-1238569592/solver-1522251-1238569592 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1522251-1238569592.cnf 520750956

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

MD5SUM BENCH= 807de0757f2dbadea1e7b17f93f9b484
RANDOM SEED=520750956

node55.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:       1316488 kB
Buffers:        102124 kB
Cached:         530076 kB
SwapCached:      11624 kB
Active:         200848 kB
Inactive:       446304 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1316488 kB
SwapTotal:     4192956 kB
SwapFree:      4175308 kB
Dirty:             716 kB
Writeback:           0 kB
Mapped:          18896 kB
Slab:            78352 kB
Committed_AS:  2891668 kB
PageTables:       1372 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= 66304 MiB
End job on node55 at 2009-04-01 09:06:36