Trace number 3266898

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
adaptg2wsat2011 2011-03-02SAT 1.69974 1.70144

General information on the benchmark

Namecrafted/anton/SRHD-SGI/
srhd-sgi-m27-q255-n25-p15-s2076598.cnf
MD5SUMf5a22d1154b549fd98215f1710a15f46
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.357944
Satisfiable
(Un)Satisfiability was proved
Number of variables545
Number of clauses29734
Sum of the clauses size59963
Maximum clause length27
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 229709
Number of clauses of size 30
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 525

Solver Data 

1.69/1.70	c 0 clauses are redundant and removed
1.69/1.70	c 0 vars are fixed and 0 clauses are removed after unit propagation
1.69/1.70	c 0 vars are fixed and 0 clauses are removed after lookahead
1.69/1.70	c initial seed is 522998092
1.69/1.70	c try=1 flip j=1102394 walk=1023030 seed 522998109
1.69/1.70	c A solution is found
1.69/1.70	s SATISFIABLE
1.69/1.70	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 
1.69/1.70	v 0 
1.69/1.70	c Done (mycputime is 1 seconds)

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-3266898-1303585205/watcher-3266898-1303585205 -o /tmp/evaluation-result-3266898-1303585205/solver-3266898-1303585205 -C 2400 -W 1300 -M 7680 adaptg2wsat2011 HOME/instance-3266898-1303585205.cnf 522998092 

running on 2 cores: 4,6

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: 3.38 3.85 3.79 5/183 11084
/proc/meminfo: memFree=14149720/32950928 swapFree=67111524/67111528
[pid=11084] ppid=11082 vsize=1068660 CPUtime=0 cores=4,6
/proc/11084/stat : 11084 (adaptg2wsat2011) R 11082 11084 10522 0 -1 4194304 350 0 0 0 0 0 0 0 22 0 1 0 548751184 1094307840 294 33554432000 4194304 4230508 140733511634560 18446744073709551615 256415052485 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/11084/statm: 267165 295 100 9 0 264322 0

[startup+0.0833231 s]
/proc/loadavg: 3.38 3.85 3.79 5/183 11084
/proc/meminfo: memFree=14149720/32950928 swapFree=67111524/67111528
[pid=11084] ppid=11082 vsize=1070772 CPUtime=0.07 cores=4,6
/proc/11084/stat : 11084 (adaptg2wsat2011) R 11082 11084 10522 0 -1 4202496 1277 0 0 0 7 0 0 0 22 0 1 0 548751184 1096470528 1219 33554432000 4194304 4230508 140733511634560 18446744073709551615 4219795 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/11084/statm: 267693 1219 117 9 0 264850 0
Current children cumulated CPU time (s) 0.07
Current children cumulated vsize (KiB) 1070772

[startup+0.10026 s]
/proc/loadavg: 3.38 3.85 3.79 5/183 11084
/proc/meminfo: memFree=14149720/32950928 swapFree=67111524/67111528
[pid=11084] ppid=11082 vsize=1070772 CPUtime=0.09 cores=4,6
/proc/11084/stat : 11084 (adaptg2wsat2011) R 11082 11084 10522 0 -1 4202496 1277 0 0 0 9 0 0 0 22 0 1 0 548751184 1096470528 1219 33554432000 4194304 4230508 140733511634560 18446744073709551615 4222092 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/11084/statm: 267693 1219 117 9 0 264850 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 1070772

[startup+0.300287 s]
/proc/loadavg: 3.38 3.85 3.79 5/183 11084
/proc/meminfo: memFree=14149720/32950928 swapFree=67111524/67111528
[pid=11084] ppid=11082 vsize=1070772 CPUtime=0.29 cores=4,6
/proc/11084/stat : 11084 (adaptg2wsat2011) R 11082 11084 10522 0 -1 4202496 1277 0 0 0 29 0 0 0 23 0 1 0 548751184 1096470528 1219 33554432000 4194304 4230508 140733511634560 18446744073709551615 4221866 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/11084/statm: 267693 1219 117 9 0 264850 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1070772

[startup+0.701199 s]
/proc/loadavg: 3.38 3.85 3.79 5/183 11084
/proc/meminfo: memFree=14149720/32950928 swapFree=67111524/67111528
[pid=11084] ppid=11082 vsize=1070772 CPUtime=0.69 cores=4,6
/proc/11084/stat : 11084 (adaptg2wsat2011) R 11082 11084 10522 0 -1 4202496 1277 0 0 0 69 0 0 0 25 0 1 0 548751184 1096470528 1219 33554432000 4194304 4230508 140733511634560 18446744073709551615 4222095 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/11084/statm: 267693 1219 117 9 0 264850 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 1070772

[startup+1.50105 s]
/proc/loadavg: 3.38 3.85 3.79 5/190 11097
/proc/meminfo: memFree=13904096/32950928 swapFree=67111524/67111528
[pid=11084] ppid=11082 vsize=1070772 CPUtime=1.49 cores=4,6
/proc/11084/stat : 11084 (adaptg2wsat2011) R 11082 11084 10522 0 -1 4202496 1277 0 0 0 149 0 0 0 25 0 1 0 548751184 1096470528 1219 33554432000 4194304 4230508 140733511634560 18446744073709551615 4222112 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/11084/statm: 267693 1219 117 9 0 264850 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 1070772

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

[startup+1.70102 s]
/proc/loadavg: 3.38 3.85 3.79 5/190 11097
/proc/meminfo: memFree=13904096/32950928 swapFree=67111524/67111528
[pid=11084] ppid=11082 vsize=1070772 CPUtime=1.69 cores=4,6
/proc/11084/stat : 11084 (adaptg2wsat2011) R 11082 11084 10522 0 -1 4202496 1279 0 0 0 169 0 0 0 25 0 1 0 548751184 1096470528 1220 33554432000 4194304 4230508 140733511634560 18446744073709551615 256414982480 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/11084/statm: 0 0 0 0 0 0 0
Current children cumulated CPU time (s) 1.69
Current children cumulated vsize (KiB) 1070772

Child status: 10
Real time (s): 1.70144
CPU time (s): 1.69974
CPU user time (s): 1.69774
CPU system time (s): 0.001999
CPU usage (%): 99.9001
Max. virtual memory (cumulated for all children) (KiB): 1070772

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.69774
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= 1281
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 0.005999 second user time and 0.007998 second system time

The end

Launcher Data 

Begin job on node115 at 2011-04-23 21:00:05
IDJOB=3266898
IDBENCH=88220
IDSOLVER=1577
FILE ID=node115/3266898-1303585205
RUNJOBID= node115-1303585205-11055
PBS_JOBID= 13150350
Free space on /tmp= 72424 MiB

SOLVER NAME= adaptg2wsat2011 2011-03-02
BENCH NAME= SAT11/crafted/anton/SRHD-SGI/srhd-sgi-m27-q255-n25-p15-s2076598.cnf
COMMAND LINE= adaptg2wsat2011 BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3266898-1303585205/watcher-3266898-1303585205 -o /tmp/evaluation-result-3266898-1303585205/solver-3266898-1303585205 -C 2400 -W 1300 -M 7680  adaptg2wsat2011 HOME/instance-3266898-1303585205.cnf 522998092

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

MD5SUM BENCH= f5a22d1154b549fd98215f1710a15f46
RANDOM SEED=522998092

node115.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		: 2666.811
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	: 5333.62
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		: 2666.811
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		: 2666.811
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	: 5332.75
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		: 2666.811
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		: 2666.811
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	: 5332.77
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		: 2666.811
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		: 2666.811
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		: 2666.811
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	: 5332.74
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32950928 kB
MemFree:      14149876 kB
Buffers:       2280600 kB
Cached:       15879376 kB
SwapCached:          4 kB
Active:        7335920 kB
Inactive:     10911844 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32950928 kB
LowFree:      14149876 kB
SwapTotal:    67111528 kB
SwapFree:     67111524 kB
Dirty:           30500 kB
Writeback:           0 kB
AnonPages:       86684 kB
Mapped:          14884 kB
Slab:           488616 kB
PageTables:       4796 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83586992 kB
Committed_AS:  1293680 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= 72380 MiB
End job on node115 at 2011-04-23 21:00:07