Trace number 1523850

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 0.327949 0.328179

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/560/
unif-k3-r4.25-v560-c2380-S809967194-078.cnf
MD5SUMed095e38b0a3e5af1f48e3823e5c45cb
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.019996
Satisfiable
(Un)Satisfiability was proved
Number of variables560
Number of clauses2380
Sum of the clauses size7140
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32380
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.29/0.32	c try 1 flip j 277142
0.29/0.32	c A solution is found
0.29/0.32	s SATISFIABLE
0.29/0.32	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 -519 520 521 522 -523 -524 525 526 527 -528 529 530 531 532 -533 -534 535 -536 -537 -538 539 540 541 542 543 -544 -545 546 -547 548 549 -550 -551 -552 -553 -554 -555 556 557 558 559 560 
0.29/0.32	v 0 
0.29/0.32	c Done (mycputime is 0.320 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-1523850-1238578900/watcher-1523850-1238578900 -o /tmp/evaluation-result-1523850-1238578900/solver-1523850-1238578900 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/Hybrid2 HOME/instance-1523850-1238578900.cnf 166869406 

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 1.00 1.10 3/64 1485
/proc/meminfo: memFree=1509672/2055920 swapFree=4172472/4192956
[pid=1485] ppid=1483 vsize=451072 CPUtime=0
/proc/1485/stat : 1485 (Hybrid2) R 1483 1485 1323 0 -1 4194304 147 0 0 0 0 0 0 0 18 0 1 0 1130553211 461897728 131 1992294400 134512640 135106774 4294956208 18446744073709551615 134523903 0 0 4096 0 0 0 0 17 1 0 0
/proc/1485/statm: 112768 131 53 145 0 111644 0

[startup+0.0316689 s]
/proc/loadavg: 1.00 1.00 1.10 3/64 1485
/proc/meminfo: memFree=1509672/2055920 swapFree=4172472/4192956
[pid=1485] ppid=1483 vsize=455104 CPUtime=0.02
/proc/1485/stat : 1485 (Hybrid2) R 1483 1485 1323 0 -1 4194304 204 0 0 0 2 0 0 0 18 0 1 0 1130553211 466026496 188 1992294400 134512640 135106774 4294956208 18446744073709551615 134528272 0 0 4096 0 0 0 0 17 1 0 0
/proc/1485/statm: 113776 188 56 145 0 112652 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 455104

[startup+0.102682 s]
/proc/loadavg: 1.00 1.00 1.10 3/64 1485
/proc/meminfo: memFree=1509672/2055920 swapFree=4172472/4192956
[pid=1485] ppid=1483 vsize=455104 CPUtime=0.1
/proc/1485/stat : 1485 (Hybrid2) R 1483 1485 1323 0 -1 4194304 204 0 0 0 10 0 0 0 18 0 1 0 1130553211 466026496 188 1992294400 134512640 135106774 4294956208 18446744073709551615 134528779 0 0 4096 0 0 0 0 17 1 0 0
/proc/1485/statm: 113776 188 56 145 0 112652 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 455104

[startup+0.301696 s]
/proc/loadavg: 1.00 1.00 1.10 3/64 1485
/proc/meminfo: memFree=1509672/2055920 swapFree=4172472/4192956
[pid=1485] ppid=1483 vsize=455104 CPUtime=0.29
/proc/1485/stat : 1485 (Hybrid2) R 1483 1485 1323 0 -1 4194304 204 0 0 0 29 0 0 0 19 0 1 0 1130553211 466026496 188 1992294400 134512640 135106774 4294956208 18446744073709551615 134528303 0 0 4096 0 0 0 0 17 1 0 0
/proc/1485/statm: 113776 188 56 145 0 112652 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 455104

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

Child status: 10
Real time (s): 0.328179
CPU time (s): 0.327949
CPU user time (s): 0.32695
CPU system time (s): 0.000999
CPU usage (%): 99.9299
Max. virtual memory (cumulated for all children) (KiB): 455104

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.32695
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= 222
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= 2

runsolver used 0.003999 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node37 at 2009-04-01 11:41:40
IDJOB=1523850
IDBENCH=70681
IDSOLVER=530
FILE ID=node37/1523850-1238578900
PBS_JOBID= 9062213
Free space on /tmp= 66428 MiB

SOLVER NAME= Hybrid2 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/560/unif-k3-r4.25-v560-c2380-S809967194-078.cnf
COMMAND LINE= HOME/Hybrid2 BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1523850-1238578900/watcher-1523850-1238578900 -o /tmp/evaluation-result-1523850-1238578900/solver-1523850-1238578900 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/Hybrid2 HOME/instance-1523850-1238578900.cnf 166869406

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

MD5SUM BENCH= ed095e38b0a3e5af1f48e3823e5c45cb
RANDOM SEED=166869406

node37.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		: 3000.213
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		: 3000.213
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:       1510088 kB
Buffers:         96856 kB
Cached:         350640 kB
SwapCached:      14360 kB
Active:         210964 kB
Inactive:       252348 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1510088 kB
SwapTotal:     4192956 kB
SwapFree:      4172472 kB
Dirty:            4608 kB
Writeback:           0 kB
Mapped:          18760 kB
Slab:            68604 kB
Committed_AS:  3003204 kB
PageTables:       1384 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= 66424 MiB
End job on node37 at 2009-04-01 11:41:40