Trace number 1523979

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 0.25296 0.25241

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/460/
unif-k3-r4.25-v460-c1955-S2067258640-036.cnf
MD5SUMd816900b718754e89a88330965d80e86
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.051991
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 

0.20/0.25	c try 1 flip j 232687
0.20/0.25	c A solution is found
0.20/0.25	s SATISFIABLE
0.20/0.25	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 
0.20/0.25	v 0 
0.20/0.25	c Done (mycputime is 0.250 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-1523979-1238592847/watcher-1523979-1238592847 -o /tmp/evaluation-result-1523979-1238592847/solver-1523979-1238592847 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/Hybrid2 HOME/instance-1523979-1238592847.cnf 387169686 

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 1.05 1.17 3/66 13410
/proc/meminfo: memFree=1269080/2055920 swapFree=4176412/4192956
[pid=13410] ppid=13408 vsize=451072 CPUtime=0
/proc/13410/stat : 13410 (Hybrid2) R 13408 13410 13313 0 -1 4194304 139 0 0 0 0 0 0 0 18 0 1 0 1131947673 461897728 123 1992294400 134512640 135106774 4294956208 18446744073709551615 134523949 0 0 4096 0 0 0 0 17 0 0 0
/proc/13410/statm: 112768 123 53 145 0 111644 0

[startup+0.014149 s]
/proc/loadavg: 1.00 1.05 1.17 3/66 13410
/proc/meminfo: memFree=1269080/2055920 swapFree=4176412/4192956
[pid=13410] ppid=13408 vsize=454972 CPUtime=0.01
/proc/13410/stat : 13410 (Hybrid2) R 13408 13410 13313 0 -1 4194304 190 0 0 0 1 0 0 0 18 0 1 0 1131947673 465891328 174 1992294400 134512640 135106774 4294956208 18446744073709551615 134528663 0 0 4096 0 0 0 0 17 0 0 0
/proc/13410/statm: 113743 174 56 145 0 112619 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 454972

[startup+0.10116 s]
/proc/loadavg: 1.00 1.05 1.17 3/66 13410
/proc/meminfo: memFree=1269080/2055920 swapFree=4176412/4192956
[pid=13410] ppid=13408 vsize=454972 CPUtime=0.1
/proc/13410/stat : 13410 (Hybrid2) R 13408 13410 13313 0 -1 4194304 190 0 0 0 10 0 0 0 18 0 1 0 1131947673 465891328 174 1992294400 134512640 135106774 4294956208 18446744073709551615 134528484 0 0 4096 0 0 0 0 17 0 0 0
/proc/13410/statm: 113743 174 56 145 0 112619 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 454972

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

[startup+0.201174 s]
/proc/loadavg: 1.00 1.05 1.17 3/66 13410
/proc/meminfo: memFree=1269080/2055920 swapFree=4176412/4192956
[pid=13410] ppid=13408 vsize=454972 CPUtime=0.2
/proc/13410/stat : 13410 (Hybrid2) R 13408 13410 13313 0 -1 4194304 190 0 0 0 20 0 0 0 18 0 1 0 1131947673 465891328 174 1992294400 134512640 135106774 4294956208 18446744073709551615 134526644 0 0 4096 0 0 0 0 17 0 0 0
/proc/13410/statm: 113743 174 56 145 0 112619 0
Current children cumulated CPU time (s) 0.2
Current children cumulated vsize (KiB) 454972

Child status: 10
Real time (s): 0.25241
CPU time (s): 0.25296
CPU user time (s): 0.251961
CPU system time (s): 0.000999
CPU usage (%): 100.218
Max. virtual memory (cumulated for all children) (KiB): 454972

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.251961
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= 208
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= 1

runsolver used 0.003999 second user time and 0.004999 second system time

The end

Launcher Data 

Begin job on node40 at 2009-04-01 15:34:07
IDJOB=1523979
IDBENCH=70724
IDSOLVER=530
FILE ID=node40/1523979-1238592847
PBS_JOBID= 9068322
Free space on /tmp= 63504 MiB

SOLVER NAME= Hybrid2 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/460/unif-k3-r4.25-v460-c1955-S2067258640-036.cnf
COMMAND LINE= HOME/Hybrid2 BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1523979-1238592847/watcher-1523979-1238592847 -o /tmp/evaluation-result-1523979-1238592847/solver-1523979-1238592847 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/Hybrid2 HOME/instance-1523979-1238592847.cnf 387169686

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

MD5SUM BENCH= d816900b718754e89a88330965d80e86
RANDOM SEED=387169686

node40.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		: 3000.232
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		: 3000.232
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:       1269560 kB
Buffers:         88540 kB
Cached:         605572 kB
SwapCached:       9688 kB
Active:         213912 kB
Inactive:       491544 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1269560 kB
SwapTotal:     4192956 kB
SwapFree:      4176412 kB
Dirty:            4616 kB
Writeback:           0 kB
Mapped:          17180 kB
Slab:            66888 kB
Committed_AS:  2925732 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= 63500 MiB
End job on node40 at 2009-04-01 15:34:08