Trace number 3375098

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
MPhaseSAT64 2011-05-14 (fixed)SAT 0.974851 0.974539

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v750-c3195-S973075635-083.SATISFIABLE.cnf
MD5SUM72699a729b1b1ff68f424bd0209fc31b
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.031994
Satisfiable
(Un)Satisfiability was proved
Number of variables750
Number of clauses3195
Sum of the clauses size9585
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 33195
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.89/0.97	c MPhaseSAT64 version 514 by Jingchao Chen,  May 13,2011
0.89/0.97	c input CNF file=HOME/instance-3375098-1305449607.cnf 
0.89/0.97	c Clause#=3195  var#=750  ratio=4 
0.89/0.97	c Simplified clause#=3195 
0.89/0.97	c XOR_varElimination deleted var#=0 clauses#=3178 
0.89/0.97	c inative var#=0 
0.89/0.97	c free var#=733  
0.89/0.97	c local search on 
0.89/0.97	c A solution found by local search 
0.89/0.97	c unfixed var#=14 var#=750 
0.89/0.97	c verified 
0.89/0.97	c 
0.89/0.97	s SATISFIABLE
0.89/0.97	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 -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 -423 424 425 426 428 -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 -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 -598 599 600 601 -602 -603 -604 -605 606 -607 608 -609 -610 -611 612 -613 -614 615 -616 617 -618 -619 620 -621 622 623 -624 625 626 627 -628 629 630 631 632 -633 634 -635 636 637 -638 -639 640 641 642 643 644 645 -646 647 -648 -649 -650 -651 -652 -653 654 655 656 657 -658 -659 -660 -661 662 663 -664 665 -666 -667 -668 669 670 -671 672 -673 -674 -675 676 677 678 -679 -680 681 -682 683 -684 -685 686 -687 -688 -689 690 -691 -692 693 694 -695 696 697 698 699 700 -701 -702 -703 704 -705 706 707 -708 709 710 711 -712 -713 714 -715 -716 -717 718 -719 720 -721 -722 -723 -724 725 -726 727 -728 -729 730 731 -732 733 -734 735 -736 737 738 739 740 -741 -742 743 -744 745 -746 747 748 -749 -750 
0.89/0.97	v 0
0.89/0.97	c 
0.89/0.97	c  Running time=0.972853

Verifier Data 

OK

Watcher Data 

runsolver Copyright (C) 2010-2011 Olivier ROUSSEL

This is runsolver version 3.3.0 (svn: 961)

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-3375098-1305449607/watcher-3375098-1305449607 -o /tmp/evaluation-result-3375098-1305449607/solver-3375098-1305449607 -C 2400 -W 1300 -M 7680 MPhaseSAT64 HOME/instance-3375098-1305449607.cnf 

running on 2 cores: 0,2

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 2400 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 2430 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1300 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 7864320 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 7915520 KiB
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 0.42 1.61 2.83 1/304 4094
/proc/meminfo: memFree=17697068/32950928 swapFree=67111348/67111528
[pid=4094] ppid=4092 vsize=12280 CPUtime=0 cores=0,2
/proc/4094/stat : 4094 (MPhaseSAT64) R 4092 4094 30479 0 -1 4202496 468 0 0 0 0 0 0 0 23 0 1 0 656560407 12574720 400 33554432000 4194304 4479436 140735199197248 18446744073709551615 4236491 0 0 4096 1026 0 0 0 17 0 0 0 0
/proc/4094/statm: 3070 400 281 70 0 190 0

[startup+0.09442 s]
/proc/loadavg: 0.42 1.61 2.83 1/304 4094
/proc/meminfo: memFree=17697068/32950928 swapFree=67111348/67111528
[pid=4094] ppid=4092 vsize=12852 CPUtime=0.09 cores=0,2
/proc/4094/stat : 4094 (MPhaseSAT64) R 4092 4094 30479 0 -1 4202496 662 0 0 0 9 0 0 0 23 0 1 0 656560407 13160448 593 33554432000 4194304 4479436 140735199197248 18446744073709551615 4344232 0 0 4096 1026 0 0 0 17 0 0 0 0
/proc/4094/statm: 3213 593 324 70 0 333 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 12852

[startup+0.100417 s]
/proc/loadavg: 0.42 1.61 2.83 1/304 4094
/proc/meminfo: memFree=17697068/32950928 swapFree=67111348/67111528
[pid=4094] ppid=4092 vsize=12852 CPUtime=0.09 cores=0,2
/proc/4094/stat : 4094 (MPhaseSAT64) R 4092 4094 30479 0 -1 4202496 678 0 0 0 9 0 0 0 24 0 1 0 656560407 13160448 609 33554432000 4194304 4479436 140735199197248 18446744073709551615 4451360 0 0 4096 1026 0 0 0 17 0 0 0 0
/proc/4094/statm: 3213 609 324 70 0 333 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 12852

[startup+0.300266 s]
/proc/loadavg: 0.42 1.61 2.83 1/304 4094
/proc/meminfo: memFree=17697068/32950928 swapFree=67111348/67111528
[pid=4094] ppid=4092 vsize=13720 CPUtime=0.29 cores=0,2
/proc/4094/stat : 4094 (MPhaseSAT64) R 4092 4094 30479 0 -1 4202496 879 0 0 0 29 0 0 0 25 0 1 0 656560407 14049280 810 33554432000 4194304 4479436 140735199197248 18446744073709551615 4450927 0 0 4096 1026 0 0 0 17 0 0 0 0
/proc/4094/statm: 3430 810 324 70 0 550 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 13720

[startup+0.700195 s]
/proc/loadavg: 0.42 1.61 2.83 1/304 4094
/proc/meminfo: memFree=17697068/32950928 swapFree=67111348/67111528
[pid=4094] ppid=4092 vsize=15016 CPUtime=0.69 cores=0,2
/proc/4094/stat : 4094 (MPhaseSAT64) R 4092 4094 30479 0 -1 4202496 1332 0 0 0 69 0 0 0 25 0 1 0 656560407 15376384 1135 33554432000 4194304 4479436 140735199197248 18446744073709551615 4450921 0 0 4096 1026 0 0 0 17 0 0 0 0
/proc/4094/statm: 3754 1135 325 70 0 874 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 15016

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

[startup+0.900216 s]
/proc/loadavg: 0.42 1.61 2.83 1/304 4094
/proc/meminfo: memFree=17697068/32950928 swapFree=67111348/67111528
[pid=4094] ppid=4092 vsize=15016 CPUtime=0.89 cores=0,2
/proc/4094/stat : 4094 (MPhaseSAT64) R 4092 4094 30479 0 -1 4202496 1339 0 0 0 89 0 0 0 25 0 1 0 656560407 15376384 1142 33554432000 4194304 4479436 140735199197248 18446744073709551615 4294753 0 0 4096 1026 0 0 0 17 0 0 0 0
/proc/4094/statm: 3754 1142 328 70 0 874 0
Current children cumulated CPU time (s) 0.89
Current children cumulated vsize (KiB) 15016

Child status: 10
Real time (s): 0.974539
CPU time (s): 0.974851
CPU user time (s): 0.971852
CPU system time (s): 0.002999
CPU usage (%): 100.032
Max. virtual memory (cumulated for all children) (KiB): 15016

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.971852
system time used= 0.002999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 1348
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= 8
involuntary context switches= 10

runsolver used 0.002999 second user time and 0.017997 second system time

The end

Launcher Data 

Begin job on node125 at 2011-05-15 10:53:27
IDJOB=3375098
IDBENCH=82807
IDSOLVER=1855
FILE ID=node125/3375098-1305449607
RUNJOBID= node125-1305449607-4080
PBS_JOBID= 13324855
Free space on /tmp= 73232 MiB

SOLVER NAME= MPhaseSAT64 2011-05-14 (fixed)
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v750-c3195-S973075635-083.SATISFIABLE.cnf
COMMAND LINE= MPhaseSAT64 BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3375098-1305449607/watcher-3375098-1305449607 -o /tmp/evaluation-result-3375098-1305449607/solver-3375098-1305449607 -C 2400 -W 1300 -M 7680  MPhaseSAT64 HOME/instance-3375098-1305449607.cnf

TIME LIMIT= 2400 seconds
MEMORY LIMIT= 7680 MiB
NBCORE= 2

MD5SUM BENCH= 72699a729b1b1ff68f424bd0209fc31b
RANDOM SEED=194716483

node125.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		: 2666.828
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		: 2666.828
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	: 5266.55
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		: 2666.828
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	: 5332.84
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		: 2666.828
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	: 5332.74
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		: 2666.828
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	: 5332.82
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		: 2666.828
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		: 2666.828
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	: 5332.75
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		: 2666.828
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:     32950928 kB
MemFree:      17697084 kB
Buffers:        276544 kB
Cached:        4541712 kB
SwapCached:          0 kB
Active:       11191820 kB
Inactive:      3681572 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32950928 kB
LowFree:      17697084 kB
SwapTotal:    67111528 kB
SwapFree:     67111348 kB
Dirty:            1436 kB
Writeback:           0 kB
AnonPages:    10055160 kB
Mapped:          28996 kB
Slab:           279796 kB
PageTables:      35180 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83586992 kB
Committed_AS: 50989800 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= 73228 MiB
End job on node125 at 2011-05-15 10:53:28