Trace number 1523778

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 0.208967 0.208335

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/520/
unif-k3-r4.25-v520-c2210-S1977519792-030.cnf
MD5SUMe6458c1749be20cdbcded67df8cce1cf
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.023996
Satisfiable
(Un)Satisfiability was proved
Number of variables520
Number of clauses2210
Sum of the clauses size6630
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32210
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.19/0.20	c try 1 flip j 176334
0.19/0.20	c A solution is found
0.19/0.20	s SATISFIABLE
0.19/0.20	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 -499 500 501 -502 503 504 505 506 507 -508 -509 -510 -511 -512 513 514 -515 516 517 -518 519 520 
0.19/0.20	v 0 
0.19/0.20	c Done (mycputime is 0.200 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-1523778-1238572500/watcher-1523778-1238572500 -o /tmp/evaluation-result-1523778-1238572500/solver-1523778-1238572500 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/Hybrid2 HOME/instance-1523778-1238572500.cnf 593185899 

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: 1.83 1.83 1.54 3/64 31704
/proc/meminfo: memFree=1210856/2055920 swapFree=4176996/4192956
[pid=31704] ppid=31702 vsize=451072 CPUtime=0
/proc/31704/stat : 31704 (Hybrid2) R 31702 31704 31237 0 -1 4194304 144 0 0 0 0 0 0 0 18 0 1 0 1129912152 461897728 128 1992294400 134512640 135106774 4294956208 18446744073709551615 134523996 0 0 4096 0 0 0 0 17 1 0 0
/proc/31704/statm: 112768 128 53 145 0 111644 0

[startup+0.0183161 s]
/proc/loadavg: 1.83 1.83 1.54 3/64 31704
/proc/meminfo: memFree=1210856/2055920 swapFree=4176996/4192956
[pid=31704] ppid=31702 vsize=454972 CPUtime=0.01
/proc/31704/stat : 31704 (Hybrid2) R 31702 31704 31237 0 -1 4194304 199 0 0 0 1 0 0 0 18 0 1 0 1129912152 465891328 183 1992294400 134512640 135106774 4294956208 18446744073709551615 134528663 0 0 4096 0 0 0 0 17 1 0 0
/proc/31704/statm: 113743 183 56 145 0 112619 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 454972

[startup+0.101322 s]
/proc/loadavg: 1.83 1.83 1.54 3/64 31704
/proc/meminfo: memFree=1210856/2055920 swapFree=4176996/4192956
[pid=31704] ppid=31702 vsize=454972 CPUtime=0.09
/proc/31704/stat : 31704 (Hybrid2) R 31702 31704 31237 0 -1 4194304 199 0 0 0 9 0 0 0 18 0 1 0 1129912152 465891328 183 1992294400 134512640 135106774 4294956208 18446744073709551615 134518331 0 0 4096 0 0 0 0 17 1 0 0
/proc/31704/statm: 113743 183 56 145 0 112619 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 454972

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

[startup+0.201331 s]
/proc/loadavg: 1.83 1.83 1.54 3/64 31704
/proc/meminfo: memFree=1210856/2055920 swapFree=4176996/4192956
[pid=31704] ppid=31702 vsize=454972 CPUtime=0.19
/proc/31704/stat : 31704 (Hybrid2) R 31702 31704 31237 0 -1 4194304 199 0 0 0 19 0 0 0 18 0 1 0 1129912152 465891328 183 1992294400 134512640 135106774 4294956208 18446744073709551615 134526756 0 0 4096 0 0 0 0 17 1 0 0
/proc/31704/statm: 113743 183 56 145 0 112619 0
Current children cumulated CPU time (s) 0.19
Current children cumulated vsize (KiB) 454972

Child status: 10
Real time (s): 0.208335
CPU time (s): 0.208967
CPU user time (s): 0.206968
CPU system time (s): 0.001999
CPU usage (%): 100.303
Max. virtual memory (cumulated for all children) (KiB): 454972

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.206968
system time used= 0.001999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 217
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 0.002999 second user time and 0.004999 second system time

The end

Launcher Data 

Begin job on node50 at 2009-04-01 09:55:00
IDJOB=1523778
IDBENCH=70657
IDSOLVER=530
FILE ID=node50/1523778-1238572500
PBS_JOBID= 9062173
Free space on /tmp= 64220 MiB

SOLVER NAME= Hybrid2 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/520/unif-k3-r4.25-v520-c2210-S1977519792-030.cnf
COMMAND LINE= HOME/Hybrid2 BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1523778-1238572500/watcher-1523778-1238572500 -o /tmp/evaluation-result-1523778-1238572500/solver-1523778-1238572500 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/Hybrid2 HOME/instance-1523778-1238572500.cnf 593185899

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

MD5SUM BENCH= e6458c1749be20cdbcded67df8cce1cf
RANDOM SEED=593185899

node50.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:       1211272 kB
Buffers:        106064 kB
Cached:         631948 kB
SwapCached:       9920 kB
Active:         228216 kB
Inactive:       521480 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1211272 kB
SwapTotal:     4192956 kB
SwapFree:      4176996 kB
Dirty:            4612 kB
Writeback:           0 kB
Mapped:          17308 kB
Slab:            80884 kB
Committed_AS:  3175640 kB
PageTables:       1456 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= 64216 MiB
End job on node50 at 2009-04-01 09:55:01