Trace number 1522332

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 1.08483 1.08371

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/460/
unif-k3-r4.25-v460-c1955-S617358728-082.cnf
MD5SUMf77bf155457eaab086ae39f525f81379
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.06099
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 

1.00/1.08	s SATISFIABLE
1.00/1.08	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
1.00/1.08	c input file instance-1522332-1238593661.cnf, flips 824450

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-1522332-1238593661/watcher-1522332-1238593661 -o /tmp/evaluation-result-1522332-1238593661/solver-1522332-1238593661 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1522332-1238593661.cnf 1875208264 

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 1.15 3/68 24871
/proc/meminfo: memFree=1511488/2055920 swapFree=4175244/4192956
[pid=24871] ppid=24869 vsize=335916 CPUtime=0
/proc/24871/stat : 24871 (iPAWS) R 24869 24871 24321 0 -1 4194304 486 0 0 0 0 0 0 0 18 0 1 0 1132027738 343977984 470 1992294400 134512640 135114423 4294956208 18446744073709551615 134615614 0 0 4096 0 0 0 0 17 1 0 0
/proc/24871/statm: 83979 473 54 146 0 83831 0

[startup+0.0793539 s]
/proc/loadavg: 1.00 1.01 1.15 3/68 24871
/proc/meminfo: memFree=1511488/2055920 swapFree=4175244/4192956
[pid=24871] ppid=24869 vsize=335916 CPUtime=0.07
/proc/24871/stat : 24871 (iPAWS) R 24869 24871 24321 0 -1 4194304 930 0 0 0 7 0 0 0 18 0 1 0 1132027738 343977984 914 1992294400 134512640 135114423 4294956208 18446744073709551615 134546177 0 0 4096 0 0 0 0 17 1 0 0
/proc/24871/statm: 83979 914 57 146 0 83831 0
Current children cumulated CPU time (s) 0.07
Current children cumulated vsize (KiB) 335916

[startup+0.101356 s]
/proc/loadavg: 1.00 1.01 1.15 3/68 24871
/proc/meminfo: memFree=1511488/2055920 swapFree=4175244/4192956
[pid=24871] ppid=24869 vsize=335916 CPUtime=0.09
/proc/24871/stat : 24871 (iPAWS) R 24869 24871 24321 0 -1 4194304 930 0 0 0 9 0 0 0 18 0 1 0 1132027738 343977984 914 1992294400 134512640 135114423 4294956208 18446744073709551615 134546177 0 0 4096 0 0 0 0 17 1 0 0
/proc/24871/statm: 83979 914 57 146 0 83831 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 335916

[startup+0.301374 s]
/proc/loadavg: 1.00 1.01 1.15 3/68 24871
/proc/meminfo: memFree=1511488/2055920 swapFree=4175244/4192956
[pid=24871] ppid=24869 vsize=335916 CPUtime=0.29
/proc/24871/stat : 24871 (iPAWS) R 24869 24871 24321 0 -1 4194304 930 0 0 0 29 0 0 0 19 0 1 0 1132027738 343977984 914 1992294400 134512640 135114423 4294956208 18446744073709551615 134546561 0 0 4096 0 0 0 0 17 1 0 0
/proc/24871/statm: 83979 914 57 146 0 83831 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 335916

[startup+0.701414 s]
/proc/loadavg: 1.00 1.01 1.15 3/68 24871
/proc/meminfo: memFree=1511488/2055920 swapFree=4175244/4192956
[pid=24871] ppid=24869 vsize=335916 CPUtime=0.69
/proc/24871/stat : 24871 (iPAWS) R 24869 24871 24321 0 -1 4194304 930 0 0 0 69 0 0 0 23 0 1 0 1132027738 343977984 914 1992294400 134512640 135114423 4294956208 18446744073709551615 134550444 0 0 4096 0 0 0 0 17 1 0 0
/proc/24871/statm: 83979 914 57 146 0 83831 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 335916

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

[startup+0.901435 s]
/proc/loadavg: 1.00 1.01 1.15 3/68 24871
/proc/meminfo: memFree=1511488/2055920 swapFree=4175244/4192956
[pid=24871] ppid=24869 vsize=335916 CPUtime=0.89
/proc/24871/stat : 24871 (iPAWS) R 24869 24871 24321 0 -1 4194304 930 0 0 0 89 0 0 0 24 0 1 0 1132027738 343977984 914 1992294400 134512640 135114423 4294956208 18446744073709551615 134515629 0 0 4096 0 0 0 0 17 1 0 0
/proc/24871/statm: 83979 914 57 146 0 83831 0
Current children cumulated CPU time (s) 0.89
Current children cumulated vsize (KiB) 335916

[startup+1.00144 s]
/proc/loadavg: 1.00 1.01 1.15 2/69 24872
/proc/meminfo: memFree=1507896/2055920 swapFree=4175244/4192956
[pid=24871] ppid=24869 vsize=335916 CPUtime=1
/proc/24871/stat : 24871 (iPAWS) R 24869 24871 24321 0 -1 4194304 930 0 0 0 100 0 0 0 25 0 1 0 1132027738 343977984 914 1992294400 134512640 135114423 4294956208 18446744073709551615 134517054 0 0 4096 0 0 0 0 17 1 0 0
/proc/24871/statm: 83979 914 57 146 0 83831 0
Current children cumulated CPU time (s) 1
Current children cumulated vsize (KiB) 335916

Child status: 0
Real time (s): 1.08371
CPU time (s): 1.08483
CPU user time (s): 1.08083
CPU system time (s): 0.003999
CPU usage (%): 100.104
Max. virtual memory (cumulated for all children) (KiB): 335916

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.08083
system time used= 0.003999
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= 3

runsolver used 0.005999 second user time and 0.006998 second system time

The end

Launcher Data 

Begin job on node60 at 2009-04-01 15:47:41
IDJOB=1522332
IDBENCH=70727
IDSOLVER=516
FILE ID=node60/1522332-1238593661
PBS_JOBID= 9068308
Free space on /tmp= 66548 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/460/unif-k3-r4.25-v460-c1955-S617358728-082.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1522332-1238593661/watcher-1522332-1238593661 -o /tmp/evaluation-result-1522332-1238593661/solver-1522332-1238593661 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1522332-1238593661.cnf 1875208264

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

MD5SUM BENCH= f77bf155457eaab086ae39f525f81379
RANDOM SEED=1875208264

node60.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		: 3000.202
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		: 3000.202
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:       1511968 kB
Buffers:         97612 kB
Cached:         352660 kB
SwapCached:      11040 kB
Active:         221796 kB
Inactive:       241692 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1511968 kB
SwapTotal:     4192956 kB
SwapFree:      4175244 kB
Dirty:             712 kB
Writeback:           0 kB
Mapped:          18480 kB
Slab:            66068 kB
Committed_AS:  3472580 kB
PageTables:       1712 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= 66548 MiB
End job on node60 at 2009-04-01 15:47:43