Trace number 1523976

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 0.498923 0.498346

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/480/
unif-k3-r4.25-v480-c2040-S2069223517-023.cnf
MD5SUM7ead389f296345f5890ecfc4b085f8df
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.117982
Satisfiable
(Un)Satisfiability was proved
Number of variables480
Number of clauses2040
Sum of the clauses size6120
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32040
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.40/0.49	c try 1 flip j 442100
0.40/0.49	c A solution is found
0.40/0.49	s SATISFIABLE
0.40/0.49	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 
0.40/0.49	v 0 
0.40/0.49	c Done (mycputime is 0.490 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-1523976-1238592482/watcher-1523976-1238592482 -o /tmp/evaluation-result-1523976-1238592482/solver-1523976-1238592482 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/Hybrid2 HOME/instance-1523976-1238592482.cnf 1981391875 

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 0.99 1.14 3/64 31993
/proc/meminfo: memFree=1162336/2055920 swapFree=4178912/4192956
[pid=31993] ppid=31991 vsize=451072 CPUtime=0
/proc/31993/stat : 31993 (Hybrid2) R 31991 31993 31956 0 -1 4194304 141 0 0 0 0 0 0 0 18 0 1 0 1131910742 461897728 125 1992294400 134512640 135106774 4294956224 18446744073709551615 134523996 0 0 4096 0 0 0 0 17 1 0 0
/proc/31993/statm: 112768 125 53 145 0 111644 0

[startup+0.0512229 s]
/proc/loadavg: 0.92 0.99 1.14 3/64 31993
/proc/meminfo: memFree=1162336/2055920 swapFree=4178912/4192956
[pid=31993] ppid=31991 vsize=454972 CPUtime=0.05
/proc/31993/stat : 31993 (Hybrid2) R 31991 31993 31956 0 -1 4194304 194 0 0 0 5 0 0 0 18 0 1 0 1131910742 465891328 178 1992294400 134512640 135106774 4294956224 18446744073709551615 134527150 0 0 4096 0 0 0 0 17 1 0 0
/proc/31993/statm: 113743 178 56 145 0 112619 0
Current children cumulated CPU time (s) 0.05
Current children cumulated vsize (KiB) 454972

[startup+0.101227 s]
/proc/loadavg: 0.92 0.99 1.14 3/64 31993
/proc/meminfo: memFree=1162336/2055920 swapFree=4178912/4192956
[pid=31993] ppid=31991 vsize=454972 CPUtime=0.1
/proc/31993/stat : 31993 (Hybrid2) R 31991 31993 31956 0 -1 4194304 194 0 0 0 10 0 0 0 18 0 1 0 1131910742 465891328 178 1992294400 134512640 135106774 4294956224 18446744073709551615 134565647 0 0 4096 0 0 0 0 17 1 0 0
/proc/31993/statm: 113743 178 56 145 0 112619 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 454972

[startup+0.301248 s]
/proc/loadavg: 0.92 0.99 1.14 3/64 31993
/proc/meminfo: memFree=1162336/2055920 swapFree=4178912/4192956
[pid=31993] ppid=31991 vsize=454972 CPUtime=0.3
/proc/31993/stat : 31993 (Hybrid2) R 31991 31993 31956 0 -1 4194304 194 0 0 0 30 0 0 0 19 0 1 0 1131910742 465891328 178 1992294400 134512640 135106774 4294956224 18446744073709551615 134526470 0 0 4096 0 0 0 0 17 1 0 0
/proc/31993/statm: 113743 178 56 145 0 112619 0
Current children cumulated CPU time (s) 0.3
Current children cumulated vsize (KiB) 454972

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

[startup+0.401259 s]
/proc/loadavg: 0.92 0.99 1.14 3/64 31993
/proc/meminfo: memFree=1162336/2055920 swapFree=4178912/4192956
[pid=31993] ppid=31991 vsize=454972 CPUtime=0.4
/proc/31993/stat : 31993 (Hybrid2) R 31991 31993 31956 0 -1 4194304 194 0 0 0 40 0 0 0 19 0 1 0 1131910742 465891328 178 1992294400 134512640 135106774 4294956224 18446744073709551615 134518096 0 0 4096 0 0 0 0 17 1 0 0
/proc/31993/statm: 113743 178 56 145 0 112619 0
Current children cumulated CPU time (s) 0.4
Current children cumulated vsize (KiB) 454972

Child status: 10
Real time (s): 0.498346
CPU time (s): 0.498923
CPU user time (s): 0.497924
CPU system time (s): 0.000999
CPU usage (%): 100.116
Max. virtual memory (cumulated for all children) (KiB): 454972

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.497924
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= 212
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 0.001999 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node47 at 2009-04-01 15:28:02
IDJOB=1523976
IDBENCH=70723
IDSOLVER=530
FILE ID=node47/1523976-1238592482
PBS_JOBID= 9068324
Free space on /tmp= 66368 MiB

SOLVER NAME= Hybrid2 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/480/unif-k3-r4.25-v480-c2040-S2069223517-023.cnf
COMMAND LINE= HOME/Hybrid2 BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1523976-1238592482/watcher-1523976-1238592482 -o /tmp/evaluation-result-1523976-1238592482/solver-1523976-1238592482 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/Hybrid2 HOME/instance-1523976-1238592482.cnf 1981391875

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

MD5SUM BENCH= 7ead389f296345f5890ecfc4b085f8df
RANDOM SEED=1981391875

node47.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		: 3000.216
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		: 3000.216
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:       1162752 kB
Buffers:        110348 kB
Cached:         678276 kB
SwapCached:       7792 kB
Active:         283896 kB
Inactive:       515016 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1162752 kB
SwapTotal:     4192956 kB
SwapFree:      4178912 kB
Dirty:            4796 kB
Writeback:           0 kB
Mapped:          15964 kB
Slab:            80236 kB
Committed_AS:  3192408 kB
PageTables:       1452 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= 66364 MiB
End job on node47 at 2009-04-01 15:28:03