Trace number 1523916

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
Hybrid2 2009-03-22SAT 0.028994 0.029714

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/440/
unif-k3-r4.25-v440-c1870-S208461254-049.cnf
MD5SUMcb7c78e2db807d1456447efe0ef16fcf
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.006998
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 

0.00/0.02	c try 1 flip j 19147
0.00/0.02	c A solution is found
0.00/0.02	s SATISFIABLE
0.00/0.02	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 
0.00/0.02	v 0 
0.00/0.02	c Done (mycputime is 0.020 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-1523916-1238585056/watcher-1523916-1238585056 -o /tmp/evaluation-result-1523916-1238585056/solver-1523916-1238585056 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/Hybrid2 HOME/instance-1523916-1238585056.cnf 863738839 

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: 0.99 0.98 1.00 3/64 20715
/proc/meminfo: memFree=1593856/2055920 swapFree=4179168/4192956
[pid=20715] ppid=20713 vsize=451072 CPUtime=0
/proc/20715/stat : 20715 (Hybrid2) R 20713 20715 20190 0 -1 4194304 138 0 0 0 0 0 0 0 18 0 1 0 1131167490 461897728 122 1992294400 134512640 135106774 4294956208 18446744073709551615 134523996 0 0 4096 0 0 0 0 17 1 0 0
/proc/20715/statm: 112768 122 53 145 0 111644 0

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

Child status: 10
Real time (s): 0.029714
CPU time (s): 0.028994
CPU user time (s): 0.027995
CPU system time (s): 0.000999
CPU usage (%): 97.5768
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.027995
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= 205
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 node61 at 2009-04-01 13:24:16
IDJOB=1523916
IDBENCH=70703
IDSOLVER=530
FILE ID=node61/1523916-1238585056
PBS_JOBID= 9062205
Free space on /tmp= 66344 MiB

SOLVER NAME= Hybrid2 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/440/unif-k3-r4.25-v440-c1870-S208461254-049.cnf
COMMAND LINE= HOME/Hybrid2 BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1523916-1238585056/watcher-1523916-1238585056 -o /tmp/evaluation-result-1523916-1238585056/solver-1523916-1238585056 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/Hybrid2 HOME/instance-1523916-1238585056.cnf 863738839

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

MD5SUM BENCH= cb7c78e2db807d1456447efe0ef16fcf
RANDOM SEED=863738839

node61.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		: 3000.238
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		: 3000.238
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:       1594336 kB
Buffers:         88904 kB
Cached:         278944 kB
SwapCached:       7920 kB
Active:         205856 kB
Inactive:       171684 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1594336 kB
SwapTotal:     4192956 kB
SwapFree:      4179168 kB
Dirty:            4596 kB
Writeback:           0 kB
Mapped:          15416 kB
Slab:            70148 kB
Committed_AS:  2756180 kB
PageTables:       1372 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264884 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66340 MiB
End job on node61 at 2009-04-01 13:24:16