Trace number 4089124

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
Sat4j PB 2.3.6 Resolution PB16UNSAT 0.163974 0.145988

General information on the benchmark

Namenormalized-PB16/DEC-SMALLINT-LIN/pb16-16-elffers/
vertexcover-instances/normalized-vertexcover-grid4x5-hard.opb
MD5SUM1ff5e809364a42cb1d85222fee18a8ae
Bench CategoryDEC-SMALLINT-LIN (no optimisation, small integers, linear constraints)
Best result obtained on this benchmarkUNSAT
Best value of the objective obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark0.000999
Has Objective FunctionNO
Satisfiable
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of variables20
Total number of constraints41
Number of constraints which are clauses40
Number of constraints which are cardinality constraints (but not clauses)1
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint2
Maximum length of a constraint20
Number of terms in the objective function 0
Biggest coefficient in the objective function 0
Number of bits for the biggest coefficient in the objective function 0
Sum of the numbers in the objective function 0
Number of bits of the sum of numbers in the objective function 0
Biggest number in a constraint 11
Number of bits of the biggest number in a constraint 4
Biggest sum of numbers in a constraint 31
Number of bits of the biggest sum of numbers5
Number of products (including duplicates)0
Sum of products size (including duplicates)0
Number of different products0
Sum of products size0

Solver Data 

0.00/0.09	c SAT4J: a SATisfiability library for Java (c) 2004-2013 Artois University and CNRS
0.00/0.09	c This is free software under the dual EPL/GNU LGPL licenses.
0.00/0.09	c See www.sat4j.org for details.
0.00/0.09	c version PB16.v20160501
0.00/0.09	c java.runtime.name	Java(TM) SE Runtime Environment
0.00/0.09	c java.vm.name		Java HotSpot(TM) 64-Bit Server VM
0.00/0.09	c java.vm.version	19.1-b02
0.00/0.09	c java.vm.vendor	Sun Microsystems Inc.
0.00/0.09	c sun.arch.data.model	64
0.00/0.09	c java.version		1.6.0_24
0.00/0.09	c os.name		Linux
0.00/0.09	c os.version		2.6.32-71.29.1.el6.x86_64
0.00/0.09	c os.arch		amd64
0.00/0.09	c Free memory 		501472288
0.00/0.09	c Max memory 		7480803328
0.00/0.09	c Total memory 		504102912
0.00/0.09	c Number of processors 	8
0.09/0.11	c Pseudo Boolean Optimization by upper bound
0.09/0.11	c --- Begin Solver configuration ---
0.09/0.11	c org.sat4j.pb.constraints.CompetResolutionPBLongMixedWLClauseCardConstrDataStructure@587bd9f2
0.09/0.11	c Learn all clauses as in MiniSAT
0.09/0.11	c claDecay=0.999 varDecay=0.95 conflictBoundIncFactor=1.5 initConflictBound=100 
0.09/0.11	c VSIDS like heuristics from MiniSAT using a heap lightweight component caching from RSAT taking into account the objective function
0.09/0.11	c No reason simplification
0.09/0.11	c Glucose 2.1 dynamic restart strategy
0.09/0.11	c Glucose 2 learned constraints deletion strategy (LBD updated on propagation) with timer check every 1000 if the learned constraints reach increasing bounds: 5000 step 1000
0.09/0.11	c timeout=2147483s
0.09/0.11	c DB Simplification allowed=false
0.09/0.11	c Listener: org.sat4j.minisat.core.VoidTracing@4e3eca90
0.09/0.11	c --- End Solver configuration ---
0.09/0.11	c solving HOME/instance-4089124-1466017988.opb
0.09/0.11	c reading problem ... 
0.09/0.12	c  no objective function found
0.09/0.12	c ... done. Wall clock time 0.011s.
0.09/0.12	c declared #vars     20
0.09/0.12	c #constraints  41
0.09/0.12	c constraints type 
0.09/0.12	c org.sat4j.minisat.constraints.card.MinWatchCard => 1
0.09/0.12	c org.sat4j.minisat.constraints.cnf.OriginalBinaryClause => 40
0.09/0.12	c 41 constraints processed.
0.09/0.14	c starts		: 1
0.09/0.14	c conflicts		: 68
0.09/0.14	c decisions		: 72
0.09/0.14	c propagations		: 345
0.09/0.14	c inspects		: 1321
0.09/0.14	c shortcuts		: 0
0.09/0.14	c learnt literals	: 5
0.09/0.14	c learnt binary clauses	: 4
0.09/0.14	c learnt ternary clauses	: 2
0.09/0.14	c learnt constraints	: 62
0.09/0.14	c ignored constraints	: 0
0.09/0.14	c root simplifications	: 0
0.09/0.14	c removed literals (reason simplification)	: 0
0.09/0.14	c reason swapping (by a shorter reason)	: 0
0.09/0.14	c Calls to reduceDB	: 0
0.09/0.14	c Number of update (reduction) of LBD	: 0
0.09/0.14	c Imported unit clauses	: 0
0.09/0.14	c number of reductions to clauses (during analyze)	: 0
0.09/0.14	c number of learned constraints concerned by reduction	: 0
0.09/0.14	c number of learning phase by resolution	: 0
0.09/0.14	c number of learning phase by cutting planes	: 0
0.09/0.14	c speed (assignments/second)	: 31363.636363636364
0.09/0.14	c non guided choices	7
0.09/0.14	c learnt constraints type 
0.09/0.14	c org.sat4j.minisat.constraints.cnf.LearntBinaryClause => 4
0.09/0.14	c org.sat4j.minisat.constraints.cnf.LearntWLClause => 58
0.09/0.14	s UNSATISFIABLE
0.09/0.14	c Total wall clock time (in seconds): 0.024

Verifier Data 

ERROR: no interpretation found !

Watcher Data 

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-4089124-1466017988/watcher-4089124-1466017988 -o /tmp/evaluation-result-4089124-1466017988/solver-4089124-1466017988 -C 1800 -W 1900 -M 15500 --bin-var /tmp/runsolver-exch-node119-1466012072-5945 --watchdog 1960 java -jar sat4j-pb.jar HOME/instance-4089124-1466017988.opb 

pid=8391
running on 4 cores: 0,2,4,6

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: 2.36 2.25 2.19 3/194 8394
/proc/meminfo: memFree=30122012/32872528 swapFree=1243664/1390832
[pid=8394] ppid=8391 vsize=2500 CPUtime=0 cores=0,2,4,6
/proc/8394/stat : 8394 (java) D 8391 8394 5929 0 -1 4202496 376 0 0 0 0 0 0 0 20 0 1 0 3847440 2560000 46 33554432000 1073741824 1073778376 140735814732928 140735814730056 272877317415 0 0 4096 0 18446744072100588836 0 0 17 0 0 0 0 0 0
/proc/8394/statm: 625 46 37 9 0 29 0

[startup+0.100114 s]
/proc/loadavg: 2.36 2.25 2.19 3/194 8394
/proc/meminfo: memFree=30122012/32872528 swapFree=1243664/1390832
[pid=8394] ppid=8391 vsize=9558476 CPUtime=0.09 cores=0,2,4,6
/proc/8394/stat : 8394 (java) S 8391 8394 5929 0 -1 4202496 4417 0 1 0 8 1 0 0 20 0 18 0 3847440 9787879424 6039 33554432000 1073741824 1073778376 140735814732928 140735814724064 272889839677 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0 0 0 0
/proc/8394/statm: 2389619 6039 2125 9 0 2380296 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 9558476

Solver just ended.
??? exit watcher main loop
??? sigkill at end of watcher main loop
??? kill 8394 sig 9
??? end of watcher thread
Dumping a history of the last processes samples

[startup+0.100114 s]
/proc/loadavg: 2.36 2.25 2.19 3/194 8394
/proc/meminfo: memFree=30122012/32872528 swapFree=1243664/1390832
[pid=8394] ppid=8391 vsize=9558476 CPUtime=0.09 cores=0,2,4,6
/proc/8394/stat : 8394 (java) S 8391 8394 5929 0 -1 4202496 4417 0 1 0 8 1 0 0 20 0 18 0 3847440 9787879424 6039 33554432000 1073741824 1073778376 140735814732928 140735814724064 272889839677 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0 0 0 0
/proc/8394/statm: 2389619 6039 2125 9 0 2380296 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 9558476

Child status: 20
Real time (s): 0.145988
CPU time (s): 0.163974
CPU user time (s): 0.13098
CPU system time (s): 0.032994
CPU usage (%): 112.32
Max. virtual memory (cumulated for all children) (KiB): 9558476

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.13098
system time used= 0.032994
maximum resident set size= 24576
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 4547
page faults= 1
swaps= 0
block input operations= 0
block output operations= 64
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 184
involuntary context switches= 10

??? join timestamper begins
??? join timestamper ends
??? end of timestamper thread
runsolver used 0.005999 second user time and 0.002999 second system time

The end

Launcher Data 

Begin job on node119 at 2016-06-15 21:13:08
IDJOB=4089124
IDBENCH=107361
IDSOLVER=2546
FILE ID=node119/4089124-1466017988
RUNJOBID= node119-1466012072-5945
PBS_JOBID= 19902816
Free space on /tmp= 71736 MiB

SOLVER NAME= Sat4j PB 2.3.6 Resolution PB16
BENCH NAME= PB16/normalized-PB16/DEC-SMALLINT-LIN/pb16-16-elffers/vertexcover-instances/normalized-vertexcover-grid4x5-hard.opb
COMMAND LINE= java -jar sat4j-pb.jar BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-4089124-1466017988/watcher-4089124-1466017988 -o /tmp/evaluation-result-4089124-1466017988/solver-4089124-1466017988 -C 1800 -W 1900 -M 15500 --bin-var /tmp/runsolver-exch-node119-1466012072-5945 --watchdog 1960  java -jar sat4j-pb.jar HOME/instance-4089124-1466017988.opb

TIME LIMIT= 1800 seconds
MEMORY LIMIT= 15500 MiB
NBCORE= 4

MD5SUM BENCH= 1ff5e809364a42cb1d85222fee18a8ae
RANDOM SEED=972116414

node119.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		: 2666.456
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	: 5332.91
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		: 2666.456
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		: 2666.456
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	: 5332.55
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		: 2666.456
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		: 2666.456
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	: 5332.54
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		: 2666.456
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		: 2666.456
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	: 5332.56
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		: 2666.456
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:        30122168 kB
Buffers:           11568 kB
Cached:            90584 kB
SwapCached:        14200 kB
Active:           544112 kB
Inactive:          92996 kB
Active(anon):     523100 kB
Inactive(anon):    14104 kB
Active(file):      21012 kB
Inactive(file):    78892 kB
Unevictable:     1390832 kB
Mlocked:         1243664 kB
SwapTotal:      67108856 kB
SwapFree:       67088056 kB
Dirty:               876 kB
Writeback:             0 kB
AnonPages:       1972032 kB
Mapped:            15472 kB
Shmem:                 0 kB
Slab:             564856 kB
SReclaimable:       8960 kB
SUnreclaim:       555896 kB
KernelStack:        1760 kB
PageTables:         8228 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:    83545120 kB
Committed_AS:    2059020 kB
VmallocTotal:   34359738367 kB
VmallocUsed:      346412 kB
VmallocChunk:   34341988032 kB
HardwareCorrupted:     0 kB
AnonHugePages:    710656 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= 71736 MiB
End job on node119 at 2016-06-15 21:13:08