Trace number 3220895

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
EagleUP 1.565.350SAT 1.74773 1.74827

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v600-c2556-S2019147653-030.SATISFIABLE.cnf
MD5SUMb15e29d3a1300cd412b2c819b5ccc2fa
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.088985
Satisfiable
(Un)Satisfiability was proved
Number of variables600
Number of clauses2556
Sum of the clauses size7668
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32556
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.00/0.00	c EagleUP SAT solver
0.00/0.00	c	AUTHOR:		Oliver Gableske	<oliver.gableske at uni-ulm.de>	(Implemented most of the solver.)
0.00/0.00	c	CONTRIBUTORS:	Julian Rueth	<julian.rueth at gmail.com>	(Implemented the Luby-series calculation.)
0.00/0.00	c			Marijn Heule	<marijn at heule.nl>		(Provided various ideas.)
0.00/0.00	c	VERSION:	1.565.350
0.00/0.00	c	INFO:		Re-compile without the flag COMPETITION and the following flags in global.h enabled to see further
0.00/0.00	c			output: LONGHEADER,VERBOSE_SLS,VERBOSE_CDCL,VERBOSE_PREPROC,COLLINF_SLS,COLLINF_CDCL,COLLINF_PREP.
0.00/0.00	c
0.00/0.00	c INITIALIZING...
0.00/0.00	c SEARCHING...
0.00/0.00	c
1.69/1.74	c Solution verified.
1.69/1.74	s SATISFIABLE
1.69/1.74	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 -561 562 -563 564 -565 -566 567 -568 569 570 571 572 -573 -574 -575 576 577 578 579 -580 581 582 583 584 585 -586 587 588 589 -590 -591 592 593 594 595 596 -597 598 -599 600 0

Verifier Data 

OK

Watcher Data 

runsolver Copyright (C) 2010-2011 Olivier ROUSSEL

This is runsolver version 3.3.0 (svn: 935)

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-3220895-1303279957/watcher-3220895-1303279957 -o /tmp/evaluation-result-3220895-1303279957/solver-3220895-1303279957 -C 5000 -W 5000 -M 15500 HOME/EagleUP HOME/instance-3220895-1303279957.cnf 953478169 

running on 4 cores: 0,2,4,6

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 5000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 5030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 5000 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 15872000 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 15923200 KiB
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 1.92 1.98 1.99 2/177 32255
/proc/meminfo: memFree=19127404/32951124 swapFree=67111528/67111528
[pid=32255] ppid=32253 vsize=2088 CPUtime=0 cores=0,2,4,6
/proc/32255/stat : 32255 (EagleUP) R 32253 32255 30740 0 -1 4202496 281 0 0 0 0 0 0 0 25 0 1 0 439596117 2138112 229 33554432000 134512640 134546896 4290660928 18446744073709551615 134535710 0 0 4096 0 0 0 0 17 2 0 0 0
/proc/32255/statm: 522 229 108 9 0 162 0

[startup+0.091566 s]
/proc/loadavg: 1.92 1.98 1.99 2/177 32255
/proc/meminfo: memFree=19127404/32951124 swapFree=67111528/67111528
[pid=32255] ppid=32253 vsize=2084 CPUtime=0.09 cores=0,2,4,6
/proc/32255/stat : 32255 (EagleUP) R 32253 32255 30740 0 -1 4202496 292 0 0 0 9 0 0 0 25 0 1 0 439596117 2134016 238 33554432000 134512640 134546896 4290660928 18446744073709551615 134531478 0 0 4096 0 0 0 0 17 2 0 0 0
/proc/32255/statm: 521 238 114 9 0 161 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 2084

[startup+0.100576 s]
/proc/loadavg: 1.92 1.98 1.99 2/177 32255
/proc/meminfo: memFree=19127404/32951124 swapFree=67111528/67111528
[pid=32255] ppid=32253 vsize=2084 CPUtime=0.09 cores=0,2,4,6
/proc/32255/stat : 32255 (EagleUP) R 32253 32255 30740 0 -1 4202496 292 0 0 0 9 0 0 0 25 0 1 0 439596117 2134016 238 33554432000 134512640 134546896 4290660928 18446744073709551615 134531219 0 0 4096 0 0 0 0 17 2 0 0 0
/proc/32255/statm: 521 238 114 9 0 161 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 2084

[startup+0.300538 s]
/proc/loadavg: 1.92 1.98 1.99 2/177 32255
/proc/meminfo: memFree=19127404/32951124 swapFree=67111528/67111528
[pid=32255] ppid=32253 vsize=2084 CPUtime=0.29 cores=0,2,4,6
/proc/32255/stat : 32255 (EagleUP) R 32253 32255 30740 0 -1 4202496 292 0 0 0 29 0 0 0 25 0 1 0 439596117 2134016 238 33554432000 134512640 134546896 4290660928 18446744073709551615 134531814 0 0 4096 0 0 0 0 17 2 0 0 0
/proc/32255/statm: 521 238 114 9 0 161 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 2084

[startup+0.700453 s]
/proc/loadavg: 1.92 1.98 1.99 2/177 32255
/proc/meminfo: memFree=19127404/32951124 swapFree=67111528/67111528
[pid=32255] ppid=32253 vsize=2084 CPUtime=0.69 cores=0,2,4,6
/proc/32255/stat : 32255 (EagleUP) R 32253 32255 30740 0 -1 4202496 292 0 0 0 69 0 0 0 25 0 1 0 439596117 2134016 238 33554432000 134512640 134546896 4290660928 18446744073709551615 134530988 0 0 4096 0 0 0 0 17 2 0 0 0
/proc/32255/statm: 521 238 114 9 0 161 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 2084

[startup+1.50031 s]
/proc/loadavg: 1.92 1.98 1.99 3/178 32256
/proc/meminfo: memFree=19127048/32951124 swapFree=67111528/67111528
[pid=32255] ppid=32253 vsize=2084 CPUtime=1.49 cores=0,2,4,6
/proc/32255/stat : 32255 (EagleUP) R 32253 32255 30740 0 -1 4202496 292 0 0 0 149 0 0 0 25 0 1 0 439596117 2134016 238 33554432000 134512640 134546896 4290660928 18446744073709551615 134531016 0 0 4096 0 0 0 0 17 2 0 0 0
/proc/32255/statm: 521 238 114 9 0 161 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 2084

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

[startup+1.70028 s]
/proc/loadavg: 1.92 1.98 1.99 3/178 32256
/proc/meminfo: memFree=19127048/32951124 swapFree=67111528/67111528
[pid=32255] ppid=32253 vsize=2084 CPUtime=1.69 cores=0,2,4,6
/proc/32255/stat : 32255 (EagleUP) R 32253 32255 30740 0 -1 4202496 292 0 0 0 169 0 0 0 25 0 1 0 439596117 2134016 238 33554432000 134512640 134546896 4290660928 18446744073709551615 134531476 0 0 4096 0 0 0 0 17 2 0 0 0
/proc/32255/statm: 521 238 114 9 0 161 0
Current children cumulated CPU time (s) 1.69
Current children cumulated vsize (KiB) 2084

Child status: 0
Real time (s): 1.74827
CPU time (s): 1.74773
CPU user time (s): 1.74673
CPU system time (s): 0.000999
CPU usage (%): 99.9695
Max. virtual memory (cumulated for all children) (KiB): 2084

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.74673
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= 293
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= 4

runsolver used 0.001999 second user time and 0.009998 second system time

The end

Launcher Data 

Begin job on node105 at 2011-04-20 08:12:37
IDJOB=3220895
IDBENCH=82832
IDSOLVER=1640
FILE ID=node105/3220895-1303279957
RUNJOBID= node105-1303259274-30758
PBS_JOBID= 13049516
Free space on /tmp= 72300 MiB

SOLVER NAME= EagleUP 1.565.350
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v600-c2556-S2019147653-030.SATISFIABLE.cnf
COMMAND LINE= HOME/EagleUP BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3220895-1303279957/watcher-3220895-1303279957 -o /tmp/evaluation-result-3220895-1303279957/solver-3220895-1303279957 -C 5000 -W 5000 -M 15500  HOME/EagleUP HOME/instance-3220895-1303279957.cnf 953478169

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 15500 MiB
NBCORE= 4

MD5SUM BENCH= b15e29d3a1300cd412b2c819b5ccc2fa
RANDOM SEED=953478169

node105.alineos.net Linux 2.6.18-164.el5 #1 SMP Thu Sep 3 03:28:30 EDT 2009

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.825
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5333.65
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.825
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 16
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5226.15
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 2
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.825
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 2
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.82
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 3
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.825
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 18
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 4
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.825
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 4
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5410.70
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 5
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.825
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 20
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.74
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 6
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.825
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 6
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.82
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 7
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.825
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 22
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32951124 kB
MemFree:      19127568 kB
Buffers:        706920 kB
Cached:       12690276 kB
SwapCached:          0 kB
Active:        5365408 kB
Inactive:      8097704 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      19127568 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:              16 kB
Writeback:           0 kB
AnonPages:       65728 kB
Mapped:          15540 kB
Slab:           298348 kB
PageTables:       4692 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS:   208336 kB
VmallocTotal: 34359738367 kB
VmallocUsed:    296008 kB
VmallocChunk: 34359440975 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 72300 MiB
End job on node105 at 2011-04-20 08:12:39