25.90/25.91 c MPhaseSAT_M version 401 suited for random catagory by Jingchao Chen, April 1,2011
25.90/25.91 c input CNF file=HOME/instance-3095616-1301754223.cnf
25.90/25.91 c Clause#=1278 var#=300 ratio=4
25.90/25.91 c Simplified clause#=1278
25.90/25.91 c XOR_varElimination deleted var#=0 clauses#=1271
25.90/25.91 c inative var#=0
25.90/25.91 c free var#=293
25.90/25.91 c local search on
25.90/25.91 c height=16 age=32
25.90/25.91 c hybrid solving ...
25.90/25.91 c switch to march
25.90/25.91 c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
25.90/25.91 c stat :: sign balance is biased by 0.444
25.90/25.91 c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
25.90/25.91 c simplify_formula():: removed 0 tautological, 0 satisfied and 594 duplicate clauses
25.90/25.91 c resolvent_look() :: found 38 resolvents
25.90/25.91 c longest clause has size 4
25.90/25.91 c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
25.90/25.91 c number of free variables = 292
25.90/25.91 c dynamic_preselect_setsize :: off
25.90/25.93 c 0 / 17 NodeCount: 121
25.99/26.00 c 1 / 17 NodeCount: 589
26.19/26.22 c 2 / 17 NodeCount: 1817
26.69/26.75 c 3 / 17 NodeCount: 4372
27.50/27.56 c 4 / 17 NodeCount: 7912
28.39/28.48 c 5 / 17 NodeCount: 11393
29.09/29.11 c 6 / 17 NodeCount: 13600
29.29/29.38 c 7 / 17 NodeCount: 14496
29.39/29.44 c 8 / 17 NodeCount: 14694
29.39/29.45 c 9 / 17 NodeCount: 14722
29.39/29.45 c
29.39/29.45 s UNSATISFIABLE
29.39/29.45 c
29.39/29.45 c Running time=29.452522
runsolver Copyright (C) 2010 Olivier ROUSSEL
This is runsolver version 3.3.0 (svn: 893)
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-3095616-1301754223/watcher-3095616-1301754223 -o /tmp/evaluation-result-3095616-1301754223/solver-3095616-1301754223 -C 2400 -W 1300 -M 7680 MPhaseSAT_M HOME/instance-3095616-1301754223.cnf
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: 3.95 4.00 3.94 4/189 2789
/proc/meminfo: memFree=23081380/32950928 swapFree=67111528/67111528
[pid=2789] ppid=2787 vsize=3192 CPUtime=0 cores=4,6
/proc/2789/stat : 2789 (MPhaseSAT_M) R 2787 2789 1686 0 -1 4202496 362 0 0 0 0 0 0 0 25 0 1 0 365653021 3268608 300 33554432000 134512640 134829744 4294141024 18446744073709551615 134541365 0 0 4096 1026 0 0 0 17 4 0 0 0
/proc/2789/statm: 798 300 238 78 0 84 0
[startup+0.0327431 s]
/proc/loadavg: 3.95 4.00 3.94 4/189 2789
/proc/meminfo: memFree=23081380/32950928 swapFree=67111528/67111528
[pid=2789] ppid=2787 vsize=3456 CPUtime=0.03 cores=4,6
/proc/2789/stat : 2789 (MPhaseSAT_M) R 2787 2789 1686 0 -1 4202496 459 0 0 0 3 0 0 0 25 0 1 0 365653021 3538944 397 33554432000 134512640 134829744 4294141024 18446744073709551615 2729468 0 0 4096 1026 0 0 0 17 4 0 0 0
/proc/2789/statm: 864 397 271 78 0 150 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 3456
[startup+0.100735 s]
/proc/loadavg: 3.95 4.00 3.94 4/189 2789
/proc/meminfo: memFree=23081380/32950928 swapFree=67111528/67111528
[pid=2789] ppid=2787 vsize=3588 CPUtime=0.09 cores=4,6
/proc/2789/stat : 2789 (MPhaseSAT_M) R 2787 2789 1686 0 -1 4202496 496 0 0 0 9 0 0 0 25 0 1 0 365653021 3674112 434 33554432000 134512640 134829744 4294141024 18446744073709551615 134725408 0 0 4096 1026 0 0 0 17 4 0 0 0
/proc/2789/statm: 897 434 271 78 0 183 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3588
[startup+0.300689 s]
/proc/loadavg: 3.95 4.00 3.94 4/189 2789
/proc/meminfo: memFree=23081380/32950928 swapFree=67111528/67111528
[pid=2789] ppid=2787 vsize=3852 CPUtime=0.29 cores=4,6
/proc/2789/stat : 2789 (MPhaseSAT_M) R 2787 2789 1686 0 -1 4202496 560 0 0 0 29 0 0 0 25 0 1 0 365653021 3944448 498 33554432000 134512640 134829744 4294141024 18446744073709551615 134722439 0 0 4096 1026 0 0 0 17 4 0 0 0
/proc/2789/statm: 963 498 271 78 0 249 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 3852
[startup+0.700618 s]
/proc/loadavg: 3.95 4.00 3.94 4/189 2789
/proc/meminfo: memFree=23081380/32950928 swapFree=67111528/67111528
[pid=2789] ppid=2787 vsize=4116 CPUtime=0.69 cores=4,6
/proc/2789/stat : 2789 (MPhaseSAT_M) R 2787 2789 1686 0 -1 4202496 636 0 0 0 69 0 0 0 25 0 1 0 365653021 4214784 574 33554432000 134512640 134829744 4294141024 18446744073709551615 134605673 0 0 4096 1026 0 0 0 17 4 0 0 0
/proc/2789/statm: 1029 574 274 78 0 315 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 4116
[startup+1.50048 s]
/proc/loadavg: 3.95 4.00 3.94 5/190 2790
/proc/meminfo: memFree=23079660/32950928 swapFree=67111528/67111528
[pid=2789] ppid=2787 vsize=4116 CPUtime=1.49 cores=4,6
/proc/2789/stat : 2789 (MPhaseSAT_M) R 2787 2789 1686 0 -1 4202496 636 0 0 0 149 0 0 0 25 0 1 0 365653021 4214784 574 33554432000 134512640 134829744 4294141024 18446744073709551615 134606514 0 0 4096 1026 0 0 0 17 4 0 0 0
/proc/2789/statm: 1029 574 274 78 0 315 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 4116
[startup+3.10017 s]
/proc/loadavg: 3.95 4.00 3.94 5/190 2790
/proc/meminfo: memFree=23079164/32950928 swapFree=67111528/67111528
[pid=2789] ppid=2787 vsize=4116 CPUtime=3.09 cores=4,6
/proc/2789/stat : 2789 (MPhaseSAT_M) R 2787 2789 1686 0 -1 4202496 636 0 0 0 309 0 0 0 25 0 1 0 365653021 4214784 574 33554432000 134512640 134829744 4294141024 18446744073709551615 134605618 0 0 4096 1026 0 0 0 17 4 0 0 0
/proc/2789/statm: 1029 574 274 78 0 315 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 4116
[startup+6.30058 s]
/proc/loadavg: 3.95 4.00 3.94 5/190 2790
/proc/meminfo: memFree=23078768/32950928 swapFree=67111528/67111528
[pid=2789] ppid=2787 vsize=4116 CPUtime=6.3 cores=4,6
/proc/2789/stat : 2789 (MPhaseSAT_M) R 2787 2789 1686 0 -1 4202496 636 0 0 0 630 0 0 0 25 0 1 0 365653021 4214784 574 33554432000 134512640 134829744 4294141024 18446744073709551615 134606211 0 0 4096 1026 0 0 0 17 4 0 0 0
/proc/2789/statm: 1029 574 274 78 0 315 0
Current children cumulated CPU time (s) 6.3
Current children cumulated vsize (KiB) 4116
[startup+12.7004 s]
/proc/loadavg: 3.96 4.00 3.94 5/190 2790
/proc/meminfo: memFree=23077780/32950928 swapFree=67111528/67111528
[pid=2789] ppid=2787 vsize=4380 CPUtime=12.69 cores=4,6
/proc/2789/stat : 2789 (MPhaseSAT_M) R 2787 2789 1686 0 -1 4202496 681 0 0 0 1269 0 0 0 25 0 1 0 365653021 4485120 619 33554432000 134512640 134829744 4294141024 18446744073709551615 134605952 0 0 4096 1026 0 0 0 17 4 0 0 0
/proc/2789/statm: 1095 619 274 78 0 381 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 4380
[startup+25.501 s]
/proc/loadavg: 3.97 4.00 3.94 5/190 2790
/proc/meminfo: memFree=23076884/32950928 swapFree=67111528/67111528
[pid=2789] ppid=2787 vsize=4380 CPUtime=25.5 cores=4,6
/proc/2789/stat : 2789 (MPhaseSAT_M) R 2787 2789 1686 0 -1 4202496 682 0 0 0 2550 0 0 0 25 0 1 0 365653021 4485120 620 33554432000 134512640 134829744 4294141024 18446744073709551615 134609281 0 0 4096 1026 0 0 0 17 4 0 0 0
/proc/2789/statm: 1095 620 275 78 0 381 0
Current children cumulated CPU time (s) 25.5
Current children cumulated vsize (KiB) 4380
Solver just ended. Dumping a history of the last processes samples
[startup+27.1007 s]
/proc/loadavg: 3.97 4.00 3.94 5/190 2790
/proc/meminfo: memFree=23076512/32950928 swapFree=67111528/67111528
[pid=2789] ppid=2787 vsize=5040 CPUtime=27.09 cores=4,6
/proc/2789/stat : 2789 (MPhaseSAT_M) R 2787 2789 1686 0 -1 4202496 820 0 0 0 2709 0 0 0 25 0 1 0 365653021 5160960 758 33554432000 134512640 134829744 4294141024 18446744073709551615 134790318 0 0 4096 1026 0 0 0 17 4 0 0 0
/proc/2789/statm: 1260 758 304 78 0 546 0
Current children cumulated CPU time (s) 27.09
Current children cumulated vsize (KiB) 5040
[startup+28.7004 s]
/proc/loadavg: 3.97 4.00 3.94 5/190 2790
/proc/meminfo: memFree=23076016/32950928 swapFree=67111528/67111528
[pid=2789] ppid=2787 vsize=5244 CPUtime=28.69 cores=4,6
/proc/2789/stat : 2789 (MPhaseSAT_M) R 2787 2789 1686 0 -1 4202496 880 0 0 0 2869 0 0 0 25 0 1 0 365653021 5369856 818 33554432000 134512640 134829744 4294141024 18446744073709551615 134822476 0 0 4096 1026 0 0 0 17 4 0 0 0
/proc/2789/statm: 1311 818 305 78 0 597 0
Current children cumulated CPU time (s) 28.69
Current children cumulated vsize (KiB) 5244
[startup+29.1004 s]
/proc/loadavg: 3.97 4.00 3.94 5/190 2790
/proc/meminfo: memFree=23076016/32950928 swapFree=67111528/67111528
[pid=2789] ppid=2787 vsize=5480 CPUtime=29.09 cores=4,6
/proc/2789/stat : 2789 (MPhaseSAT_M) R 2787 2789 1686 0 -1 4202496 906 0 0 0 2909 0 0 0 25 0 1 0 365653021 5611520 844 33554432000 134512640 134829744 4294141024 18446744073709551615 134789097 0 0 4096 1026 0 0 0 17 4 0 0 0
/proc/2789/statm: 1370 844 305 78 0 656 0
Current children cumulated CPU time (s) 29.09
Current children cumulated vsize (KiB) 5480
[startup+29.3003 s]
/proc/loadavg: 3.97 4.00 3.94 5/190 2790
/proc/meminfo: memFree=23076016/32950928 swapFree=67111528/67111528
[pid=2789] ppid=2787 vsize=5480 CPUtime=29.29 cores=4,6
/proc/2789/stat : 2789 (MPhaseSAT_M) R 2787 2789 1686 0 -1 4202496 911 0 0 0 2929 0 0 0 25 0 1 0 365653021 5611520 849 33554432000 134512640 134829744 4294141024 18446744073709551615 134782044 0 0 4096 1026 0 0 0 17 4 0 0 0
/proc/2789/statm: 1370 849 305 78 0 656 0
Current children cumulated CPU time (s) 29.29
Current children cumulated vsize (KiB) 5480
[startup+29.4003 s]
/proc/loadavg: 3.97 4.00 3.94 5/190 2790
/proc/meminfo: memFree=23076016/32950928 swapFree=67111528/67111528
[pid=2789] ppid=2787 vsize=5480 CPUtime=29.39 cores=4,6
/proc/2789/stat : 2789 (MPhaseSAT_M) R 2787 2789 1686 0 -1 4202496 913 0 0 0 2939 0 0 0 25 0 1 0 365653021 5611520 851 33554432000 134512640 134829744 4294141024 18446744073709551615 134789017 0 0 4096 1026 0 0 0 17 4 0 0 0
/proc/2789/statm: 1370 851 305 78 0 656 0
Current children cumulated CPU time (s) 29.39
Current children cumulated vsize (KiB) 5480
Child status: 20
Real time (s): 29.4536
CPU time (s): 29.4535
CPU user time (s): 29.4505
CPU system time (s): 0.002999
CPU usage (%): 99.9998
Max. virtual memory (cumulated for all children) (KiB): 5480
getrusage(RUSAGE_CHILDREN,...) data:
user time used= 29.4505
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= 919
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= 6
involuntary context switches= 384
runsolver used 0.037994 second user time and 0.097985 second system time
The end
Begin job on node113 at 2011-04-02 16:23:44
IDJOB=3095616
IDBENCH=82898
IDSOLVER=1522
FILE ID=node113/3095616-1301754223
RUNJOBID= node113-1301748572-1705
PBS_JOBID= 12841024
Free space on /tmp= 70720 MiB
SOLVER NAME= MPhaseSAT_M 2011-02-16
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v300-c1278-S1223020224-097.UNKNOWN.cnf
COMMAND LINE= MPhaseSAT_M BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3095616-1301754223/watcher-3095616-1301754223 -o /tmp/evaluation-result-3095616-1301754223/solver-3095616-1301754223 -C 2400 -W 1300 -M 7680 MPhaseSAT_M HOME/instance-3095616-1301754223.cnf
TIME LIMIT= 2400 seconds
MEMORY LIMIT= 7680 MiB
NBCORE= 2
MD5SUM BENCH= 9e24719e5efd9c5e96f374a33a1fed5d
RANDOM SEED=1680023605
node113.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 : 2666.846
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 : 5333.69
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 : 2666.846
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 : 5332.76
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 : 2666.846
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 : 5332.74
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 : 2666.846
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 : 2666.846
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 : 5332.74
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 : 2666.846
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 : 5332.75
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 : 2666.846
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 : 5332.83
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 : 2666.846
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: 23081660 kB
Buffers: 308728 kB
Cached: 9154180 kB
SwapCached: 0 kB
Active: 6179560 kB
Inactive: 3398120 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 32950928 kB
LowFree: 23081660 kB
SwapTotal: 67111528 kB
SwapFree: 67111528 kB
Dirty: 808 kB
Writeback: 0 kB
AnonPages: 114716 kB
Mapped: 16832 kB
Slab: 228348 kB
PageTables: 5036 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
CommitLimit: 83586992 kB
Committed_AS: 311344 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= 70720 MiB
End job on node113 at 2011-04-02 16:24:13