0.00/0.00 c
0.00/0.00 c Open-WBO: a Modular MaxSAT Solver -- based on Glucose4.0 (core version)
0.00/0.00 c Version: Pseudo-Boolean Evaluation 2016 -- LSU
0.00/0.00 c Authors: Ruben Martins, Vasco Manquinho, Ines Lynce
0.00/0.00 c Contributors: Miguel Neves, Saurabh Joshi, Mikolas Janota
0.00/0.00 c Contact: open-wbo@sat.inesc-id.pt -- http://sat.inesc-id.pt/open-wbo/
0.00/0.00 c
0.00/0.00 c WARNING: for repeatability, setting FPU to use double precision
0.00/0.00 c Instance file HOME/instance-4083873-1465348334.opb
0.00/0.00 c File size is 60507 bytes.
6.28/6.32 c Sum of soft weights: 52
6.28/6.32 c | |
6.28/6.32 c ========================================[ Problem Statistics ]===========================================
6.28/6.32 c | |
6.28/6.32 c | Problem Type: Weighted |
6.28/6.32 c | Number of variables: 238 |
6.28/6.32 c | Number of hard clauses: 1 |
6.28/6.32 c | Number of soft clauses: 6 |
6.28/6.32 c | Number of cardinality: 0 |
6.28/6.32 c | Number of PB : 398 |
6.28/6.32 c | Parse time: 0.01 s |
6.28/6.32 c | |
6.28/6.32 c ==========================================[ Solver Settings ]============================================
6.28/6.32 c | |
6.28/6.32 c | Algorithm: LinearSU |
6.28/6.32 c | BMO strategy: On |
6.28/6.32 c | BMO search: No |
6.28/6.32 c | PB Encoding: GTE |
6.28/6.32 c | |
6.28/6.32 o 47
6.28/6.32 o 45
6.28/6.32 o 44
6.28/6.32 o 43
6.28/6.32 o 40
6.28/6.32 o 32
6.28/6.32 o 29
6.28/6.32 o 27
6.28/6.32 o 26
6.28/6.32 o 25
6.28/6.32 s OPTIMUM FOUND
6.28/6.32 v -x1 -x2 x3 -x4 -x5 x238 -x30 -x31 x32 -x33 -x34 -x35 x36 -x37 -x38 x39 -x40 -x41 -x237 x24 x25 -x26 -x27 -x28 -x29 -x236 -x235 -x234 x233 x232 x18 x19 -x20 -x21 -x22 -x23 -x231 -x230 -x229 -x228 x227 x226 x225 x224 -x223 x222 x221 x220 x219 x218 x6 -x7 -x8 -x9 -x10 -x11 -x217 -x216 -x215 -x214 -x213 -x212 -x211 x210 x209 x208 x207 -x206 x205 x204 x203 x202 -x201 x200 x199 x198 -x197 x196 x195 x194 x193 x192 x191 x190 x189 -x188 -x12 -x13 -x14 -x15 -x16 -x17 -x187 -x186 -x185 -x184 -x183 -x182 -x181 -x180 x179 x178 x177 x176 x175 x174 -x173 x172 x171 x170 x169 -x168 x167 x166 -x165 x164 x163 x162 -x161 x160 x159 x158 x157 -x156 x155 x154 x153 -x152 x151 x150 x149 x148 -x147 x146 x145 x144 x143 x142 x141 x140 x139 x138 x137 x136 x135 x134 x133 -x132 -x131 -x130 -x129 -x128 x127 -x126 -x125 -x124 x123 x122 x121 x120 x119 x118 x117 x116 -x115 x114 x113 x112 x111 -x110 x109 x108 -x107 x106 x105 x104 x103 x102 x101 -x100 x99 x98 x97 x96 -x95 x94 x93 x92 -x91 x90 x89 x88 x87 x86 x85 x84 x83 -x82 x81 x80 x79 x78 x77 x76 x75 x74 x73 x72 x71 x70 x69 x68 x67 x66 x65 x64 x63 x62 x61 x60 x59 x58 x57 x56 x55 x54 x53 x52 x51 x50 x49 x48 x47 x46 x45 x44 x43 x42
runsolver Copyright (C) 2010-2013 Olivier ROUSSEL
This is runsolver version 3.3.7 (svn: 2553)
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-4083873-1465348334/watcher-4083873-1465348334 -o /tmp/evaluation-result-4083873-1465348334/solver-4083873-1465348334 -C 1800 -W 1900 -M 15500 --bin-var /tmp/runsolver-exch-node139-1465337035-25104 --watchdog 1960 open-wbo-lsu HOME/instance-4083873-1465348334.opb
pid=27357
running on 4 cores: 1,3,5,7
Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1830 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1900 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: 2.07 2.20 2.17 4/177 27360
/proc/meminfo: memFree=29593936/32872528 swapFree=17452/1581112
[pid=27360] ppid=27357 vsize=2396 CPUtime=0 cores=1,3,5,7
/proc/27360/stat : 27360 (open-wbo-lsu) R 27357 27360 25087 0 -1 4202496 330 0 0 0 0 0 0 0 20 0 1 0 116765382 2453504 205 33554432000 4194304 6058637 140737147922720 140735752878456 5042435 0 0 4096 8404992 0 0 0 17 3 0 0 0 0 0
/proc/27360/statm: 599 205 150 456 0 120 0
[startup+0.100168 s]
/proc/loadavg: 2.07 2.20 2.17 4/177 27360
/proc/meminfo: memFree=29593936/32872528 swapFree=17452/1581112
[pid=27360] ppid=27357 vsize=31068 CPUtime=0.09 cores=1,3,5,7
/proc/27360/stat : 27360 (open-wbo-lsu) R 27357 27360 25087 0 -1 4202496 6355 0 0 0 9 0 0 0 20 0 1 0 116765382 31813632 6517 33554432000 4194304 6058637 140737147922720 140735752878456 5277498 0 0 4096 8404992 0 0 0 17 3 0 0 0 0 0
/proc/27360/statm: 7767 6517 165 456 0 7303 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 31068
[startup+0.200367 s]
/proc/loadavg: 2.07 2.20 2.17 4/177 27360
/proc/meminfo: memFree=29593936/32872528 swapFree=17452/1581112
[pid=27360] ppid=27357 vsize=50988 CPUtime=0.19 cores=1,3,5,7
/proc/27360/stat : 27360 (open-wbo-lsu) R 27357 27360 25087 0 -1 4202496 10736 0 0 0 18 1 0 0 20 0 1 0 116765382 52211712 11241 33554432000 4194304 6058637 140737147922720 140735752878456 5042435 0 0 4096 8404992 0 0 0 17 3 0 0 0 0 0
/proc/27360/statm: 12747 11242 170 456 0 12283 0
Current children cumulated CPU time (s) 0.19
Current children cumulated vsize (KiB) 50988
[startup+0.300378 s]
/proc/loadavg: 2.07 2.20 2.17 4/177 27360
/proc/meminfo: memFree=29593936/32872528 swapFree=17452/1581112
[pid=27360] ppid=27357 vsize=51840 CPUtime=0.29 cores=1,3,5,7
/proc/27360/stat : 27360 (open-wbo-lsu) R 27357 27360 25087 0 -1 4202496 11004 0 0 0 28 1 0 0 20 0 1 0 116765382 53084160 11509 33554432000 4194304 6058637 140737147922720 140735752878456 4277394 0 0 4096 8404992 0 0 0 17 3 0 0 0 0 0
/proc/27360/statm: 12960 11509 170 456 0 12496 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 51840
[startup+0.700327 s]
/proc/loadavg: 2.07 2.20 2.17 4/177 27360
/proc/meminfo: memFree=29593936/32872528 swapFree=17452/1581112
[pid=27360] ppid=27357 vsize=52804 CPUtime=0.69 cores=1,3,5,7
/proc/27360/stat : 27360 (open-wbo-lsu) R 27357 27360 25087 0 -1 4202496 11176 0 0 0 68 1 0 0 20 0 1 0 116765382 54071296 11681 33554432000 4194304 6058637 140737147922720 140735752878456 4277708 0 0 4096 8404992 0 0 0 17 3 0 0 0 0 0
/proc/27360/statm: 13201 11681 170 456 0 12737 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 52804
[startup+1.50032 s]
/proc/loadavg: 2.07 2.20 2.17 4/178 27361
/proc/meminfo: memFree=29547656/32872528 swapFree=17452/1581112
[pid=27360] ppid=27357 vsize=52804 CPUtime=1.49 cores=1,3,5,7
/proc/27360/stat : 27360 (open-wbo-lsu) R 27357 27360 25087 0 -1 4202496 11187 0 0 0 148 1 0 0 20 0 1 0 116765382 54071296 11692 33554432000 4194304 6058637 140737147922720 140737147922056 4278162 0 0 4096 8404992 0 0 0 17 3 0 0 0 0 0
/proc/27360/statm: 13201 11692 170 456 0 12737 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 52804
[startup+3.10032 s]
/proc/loadavg: 2.07 2.20 2.17 4/178 27361
/proc/meminfo: memFree=29547160/32872528 swapFree=17452/1581112
[pid=27360] ppid=27357 vsize=52804 CPUtime=3.09 cores=1,3,5,7
/proc/27360/stat : 27360 (open-wbo-lsu) R 27357 27360 25087 0 -1 4202496 11204 0 0 0 308 1 0 0 20 0 1 0 116765382 54071296 11708 33554432000 4194304 6058637 140737147922720 140737147922056 4277708 0 0 4096 8404992 0 0 0 17 3 0 0 0 0 0
/proc/27360/statm: 13201 11708 170 456 0 12737 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 52804
[startup+6.30032 s]
/proc/loadavg: 2.06 2.20 2.17 3/178 27361
/proc/meminfo: memFree=29547316/32872528 swapFree=17452/1581112
[pid=27360] ppid=27357 vsize=52804 CPUtime=6.28 cores=1,3,5,7
/proc/27360/stat : 27360 (open-wbo-lsu) R 27357 27360 25087 0 -1 4202496 11729 0 0 0 627 1 0 0 20 0 1 0 116765382 54071296 11451 33554432000 4194304 6058637 140737147922720 140737147922056 4277589 0 0 4096 8404992 0 0 0 17 3 0 0 0 0 0
/proc/27360/statm: 13201 11451 172 456 0 12737 0
Current children cumulated CPU time (s) 6.28
Current children cumulated vsize (KiB) 52804
Solver just ended.
??? exit watcher main loop
??? sigkill at end of watcher main loop
??? kill 27360 sig 9
??? end of watcher thread
Dumping a history of the last processes samples
[startup+6.30032 s]
/proc/loadavg: 2.06 2.20 2.17 3/178 27361
/proc/meminfo: memFree=29547316/32872528 swapFree=17452/1581112
[pid=27360] ppid=27357 vsize=52804 CPUtime=6.28 cores=1,3,5,7
/proc/27360/stat : 27360 (open-wbo-lsu) R 27357 27360 25087 0 -1 4202496 11729 0 0 0 627 1 0 0 20 0 1 0 116765382 54071296 11451 33554432000 4194304 6058637 140737147922720 140737147922056 4277589 0 0 4096 8404992 0 0 0 17 3 0 0 0 0 0
/proc/27360/statm: 13201 11451 172 456 0 12737 0
Current children cumulated CPU time (s) 6.28
Current children cumulated vsize (KiB) 52804
Child status: 30
Real time (s): 6.32325
CPU time (s): 6.32104
CPU user time (s): 6.29804
CPU system time (s): 0.022996
CPU usage (%): 99.9649
Max. virtual memory (cumulated for all children) (KiB): 52804
getrusage(RUSAGE_CHILDREN,...) data:
user time used= 6.29804
system time used= 0.022996
maximum resident set size= 56812
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 11731
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= 3
involuntary context switches= 7
??? join timestamper begins
??? join timestamper ends
??? end of timestamper thread
runsolver used 0.020996 second user time and 0.031995 second system time
The end
Begin job on node139 at 2016-06-08 03:12:14
IDJOB=4083873
IDBENCH=2936
IDSOLVER=2545
FILE ID=node139/4083873-1465348334
RUNJOBID= node139-1465337035-25104
PBS_JOBID= 19853396
Free space on /tmp= 71728 MiB
SOLVER NAME= Open-WBO-LSU PB16
BENCH NAME= PB06/final/normalized-PB06/OPT-SMALLINT/submitted-PB06/manquiho/bounded_golomb_rulers/normalized-bogr_7.opb
COMMAND LINE= open-wbo-lsu BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-4083873-1465348334/watcher-4083873-1465348334 -o /tmp/evaluation-result-4083873-1465348334/solver-4083873-1465348334 -C 1800 -W 1900 -M 15500 --bin-var /tmp/runsolver-exch-node139-1465337035-25104 --watchdog 1960 open-wbo-lsu HOME/instance-4083873-1465348334.opb
TIME LIMIT= 1800 seconds
MEMORY LIMIT= 15500 MiB
NBCORE= 4
MD5SUM BENCH= 4bc9c47dc743f36fab4669cf3c8ccd21
RANDOM SEED=1335823447
node139.alineos.net Linux 2.6.32-71.29.1.el6.x86_64 #1 SMP Mon Jun 27 19:49:27 BST 2011
/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 : 2666.868
cache size : 8192 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 4
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 11
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips : 5333.73
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management:
processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 26
model name : Intel(R) Xeon(R) CPU X5550 @ 2.67GHz
stepping : 5
cpu MHz : 2666.868
cache size : 8192 KB
physical id : 1
siblings : 4
core id : 0
cpu cores : 4
apicid : 16
initial apicid : 16
fpu : yes
fpu_exception : yes
cpuid level : 11
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips : 5332.55
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management:
processor : 2
vendor_id : GenuineIntel
cpu family : 6
model : 26
model name : Intel(R) Xeon(R) CPU X5550 @ 2.67GHz
stepping : 5
cpu MHz : 2666.868
cache size : 8192 KB
physical id : 0
siblings : 4
core id : 1
cpu cores : 4
apicid : 2
initial apicid : 2
fpu : yes
fpu_exception : yes
cpuid level : 11
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips : 5332.56
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management:
processor : 3
vendor_id : GenuineIntel
cpu family : 6
model : 26
model name : Intel(R) Xeon(R) CPU X5550 @ 2.67GHz
stepping : 5
cpu MHz : 2666.868
cache size : 8192 KB
physical id : 1
siblings : 4
core id : 1
cpu cores : 4
apicid : 18
initial apicid : 18
fpu : yes
fpu_exception : yes
cpuid level : 11
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips : 5332.55
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management:
processor : 4
vendor_id : GenuineIntel
cpu family : 6
model : 26
model name : Intel(R) Xeon(R) CPU X5550 @ 2.67GHz
stepping : 5
cpu MHz : 2666.868
cache size : 8192 KB
physical id : 0
siblings : 4
core id : 2
cpu cores : 4
apicid : 4
initial apicid : 4
fpu : yes
fpu_exception : yes
cpuid level : 11
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips : 5332.55
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management:
processor : 5
vendor_id : GenuineIntel
cpu family : 6
model : 26
model name : Intel(R) Xeon(R) CPU X5550 @ 2.67GHz
stepping : 5
cpu MHz : 2666.868
cache size : 8192 KB
physical id : 1
siblings : 4
core id : 2
cpu cores : 4
apicid : 20
initial apicid : 20
fpu : yes
fpu_exception : yes
cpuid level : 11
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips : 5332.55
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management:
processor : 6
vendor_id : GenuineIntel
cpu family : 6
model : 26
model name : Intel(R) Xeon(R) CPU X5550 @ 2.67GHz
stepping : 5
cpu MHz : 2666.868
cache size : 8192 KB
physical id : 0
siblings : 4
core id : 3
cpu cores : 4
apicid : 6
initial apicid : 6
fpu : yes
fpu_exception : yes
cpuid level : 11
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips : 5332.55
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management:
processor : 7
vendor_id : GenuineIntel
cpu family : 6
model : 26
model name : Intel(R) Xeon(R) CPU X5550 @ 2.67GHz
stepping : 5
cpu MHz : 2666.868
cache size : 8192 KB
physical id : 1
siblings : 4
core id : 3
cpu cores : 4
apicid : 22
initial apicid : 22
fpu : yes
fpu_exception : yes
cpuid level : 11
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips : 5332.55
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management:
/proc/meminfo:
MemTotal: 32872528 kB
MemFree: 29594588 kB
Buffers: 46236 kB
Cached: 542996 kB
SwapCached: 1912 kB
Active: 711744 kB
Inactive: 280960 kB
Active(anon): 403624 kB
Inactive(anon): 2180 kB
Active(file): 308120 kB
Inactive(file): 278780 kB
Unevictable: 1581112 kB
Mlocked: 17452 kB
SwapTotal: 67108856 kB
SwapFree: 67099296 kB
Dirty: 4676 kB
Writeback: 0 kB
AnonPages: 1983584 kB
Mapped: 7864 kB
Shmem: 0 kB
Slab: 569820 kB
SReclaimable: 13808 kB
SUnreclaim: 556012 kB
KernelStack: 1448 kB
PageTables: 7772 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 83545120 kB
Committed_AS: 2122836 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 346412 kB
VmallocChunk: 34341988032 kB
HardwareCorrupted: 0 kB
AnonHugePages: 1712128 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
DirectMap4k: 7552 kB
DirectMap2M: 33538048 kB
Free space on /tmp at the end= 71724 MiB
End job on node139 at 2016-06-08 03:12:21