Trace number 1522307

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 0.017996 0.017853

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/440/
unif-k3-r4.25-v440-c1870-S725789261-031.cnf
MD5SUMf67f090e24644066ce5872fbc256498a
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.011997
Satisfiable
(Un)Satisfiability was proved
Number of variables440
Number of clauses1870
Sum of the clauses size5610
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31870
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	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 0
0.00/0.01	c input file instance-1522307-1238584793.cnf, flips 6290

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-1522307-1238584793/watcher-1522307-1238584793 -o /tmp/evaluation-result-1522307-1238584793/solver-1522307-1238584793 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1522307-1238584793.cnf 1636655387 

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 1.01 3/64 21014
/proc/meminfo: memFree=1378664/2055920 swapFree=4177944/4192956
[pid=21014] ppid=21012 vsize=335916 CPUtime=0
/proc/21014/stat : 21014 (iPAWS) R 21012 21014 20390 0 -1 4194304 485 0 0 0 0 0 0 0 18 0 1 0 1131144553 343977984 469 1992294400 134512640 135114423 4294956224 18446744073709551615 134533181 0 0 4096 0 0 0 0 17 1 0 0
/proc/21014/statm: 83979 469 54 146 0 83831 0

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

Child status: 0
Real time (s): 0.017853
CPU time (s): 0.017996
CPU user time (s): 0.014997
CPU system time (s): 0.002999
CPU usage (%): 100.801
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.014997
system time used= 0.002999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 937
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 0.001999 second user time and 0.006998 second system time

The end

Launcher Data 

Begin job on node29 at 2009-04-01 13:19:53
IDJOB=1522307
IDBENCH=70702
IDSOLVER=516
FILE ID=node29/1522307-1238584793
PBS_JOBID= 9070531
Free space on /tmp= 66472 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/440/unif-k3-r4.25-v440-c1870-S725789261-031.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1522307-1238584793/watcher-1522307-1238584793 -o /tmp/evaluation-result-1522307-1238584793/solver-1522307-1238584793 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1522307-1238584793.cnf 1636655387

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

MD5SUM BENCH= f67f090e24644066ce5872fbc256498a
RANDOM SEED=1636655387

node29.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		: 3000.234
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		: 3000.234
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:       1379080 kB
Buffers:        101280 kB
Cached:         472012 kB
SwapCached:       8856 kB
Active:         209908 kB
Inactive:       373940 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1379080 kB
SwapTotal:     4192956 kB
SwapFree:      4177944 kB
Dirty:             704 kB
Writeback:           0 kB
Mapped:          16228 kB
Slab:            78920 kB
Committed_AS:  3149032 kB
PageTables:       1476 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= 66472 MiB
End job on node29 at 2009-04-01 13:19:53