Trace number 3711841

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
toysat 2012-05-17? (exit code) 3.35949 3.36011

General information on the benchmark

Name/PARTIAL-BIGINT-LIN/wcsp/
driver/normalized-driverlog09_wcsp.wbo
MD5SUMe8d7313df49fc885ba8636db08f3e8b8
Bench CategoryPARTIAL-BIGINT-LIN (both soft and hard constraints, big integers, linear constraints)
Best result obtained on this benchmarkMOPT
Best cost obtained on this benchmark744
Best CPU time to get the best result obtained on this benchmark7.10292
Max-Satisfiable
Max-(Un)Satisfiability was proved
Best value of the cost
Optimality of the best cost was proved
Number of variables2872
Total number of constraints139820
Number of soft constraints139170
Number of constraints which are clauses139170
Number of constraints which are cardinality constraints (but not clauses)650
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint1
Maximum length of a constraint12
Top cost 57492
Min constraint cost 1
Max constraint cost 57492
Sum of constraints costs 7912207592
Biggest number in a constraint 1
Number of bits of the biggest number in a constraint 1
Biggest sum of numbers in a constraint 13
Number of bits of the biggest sum of numbers4
Number of products (including duplicates)0
Sum of products size (including duplicates)0
Number of different products0
Sum of products size0

Solver Data 

3.29/3.34	c 2012-05-28T17:16:52+0200
3.29/3.34	c arch = x86_64
3.29/3.34	c os = linux
3.29/3.34	c compiler = ghc 7.4
3.29/3.34	c packages:
3.29/3.34	c   OptDir-0.0.1
3.29/3.34	c   array-0.4.0.0
3.29/3.34	c   base-4.5.0.0
3.29/3.34	c   bytestring-0.9.2.1
3.29/3.34	c   containers-0.4.2.1
3.29/3.34	c   deepseq-1.3.0.0
3.29/3.34	c   mtl-2.1.1
3.29/3.34	c   old_locale-1.0.0.4
3.29/3.34	c   parse_dimacs-1.2
3.29/3.34	c   parsec-3.1.2
3.29/3.34	c   queue-0.1.2
3.29/3.34	c   stm-2.3
3.29/3.34	c   time-1.4
3.29/3.34	c command line = ["--wbo","HOME/instance-3711841-1338218212.wbo"]
3.29/3.34	c #vars 2872
3.29/3.34	c #constraints 139820
3.29/3.34	Stack space overflow: current size 8388608 bytes.
3.29/3.34	Use `+RTS -Ksize -RTS' to increase it.

Verifier Data 

ERROR: no interpretation found !

Watcher Data 

runsolver Copyright (C) 2010-2011 Olivier ROUSSEL

This is runsolver version 3.3.1 (svn: 989)

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-3711841-1338218212/watcher-3711841-1338218212 -o /tmp/evaluation-result-3711841-1338218212/solver-3711841-1338218212 -C 1800 -W 1900 -M 15500 HOME/toysat --wbo HOME/instance-3711841-1338218212.wbo 

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: 0.92 0.99 1.14 3/176 23913
/proc/meminfo: memFree=31036472/32873844 swapFree=6080/6080
[pid=23913] ppid=23911 vsize=6208 CPUtime=0 cores=0,2,4,6
/proc/23913/stat : 23913 (toysat) R 23911 23913 20249 0 -1 4202496 819 0 0 0 0 0 0 0 20 0 1 0 287945787 6356992 740 33554432000 4194304 8973514 140734652500272 140735048316984 7694442 0 0 0 34082818 0 0 0 17 4 0 0 0 0 0
/proc/23913/statm: 1552 740 423 1167 0 333 0

[startup+0.0585171 s]
/proc/loadavg: 0.92 0.99 1.14 3/176 23913
/proc/meminfo: memFree=31036472/32873844 swapFree=6080/6080
[pid=23913] ppid=23911 vsize=10304 CPUtime=0.05 cores=0,2,4,6
/proc/23913/stat : 23913 (toysat) R 23911 23913 20249 0 -1 4202496 1803 0 0 0 5 0 0 0 20 0 1 0 287945787 10551296 1724 33554432000 4194304 8973514 140734652500272 140735048316984 4209325 0 2 0 34082818 0 0 0 17 4 0 0 0 0 0
/proc/23913/statm: 2576 1727 428 1167 0 1357 0
Current children cumulated CPU time (s) 0.05
Current children cumulated vsize (KiB) 10304

[startup+0.100291 s]
/proc/loadavg: 0.92 0.99 1.14 3/176 23913
/proc/meminfo: memFree=31036472/32873844 swapFree=6080/6080
[pid=23913] ppid=23911 vsize=12352 CPUtime=0.09 cores=0,2,4,6
/proc/23913/stat : 23913 (toysat) R 23911 23913 20249 0 -1 4202496 2365 0 0 0 9 0 0 0 20 0 1 0 287945787 12648448 2286 33554432000 4194304 8973514 140734652500272 140735048316984 7937344 0 0 0 34082818 0 0 0 17 4 0 0 0 0 0
/proc/23913/statm: 3088 2286 428 1167 0 1869 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 12352

[startup+0.300268 s]
/proc/loadavg: 0.92 0.99 1.14 3/176 23913
/proc/meminfo: memFree=31036472/32873844 swapFree=6080/6080
[pid=23913] ppid=23911 vsize=27712 CPUtime=0.29 cores=0,2,4,6
/proc/23913/stat : 23913 (toysat) R 23911 23913 20249 0 -1 4202496 6094 0 0 0 28 1 0 0 20 0 1 0 287945787 28377088 6015 33554432000 4194304 8973514 140734652500272 140735048316984 7841851 0 2 0 34082818 0 0 0 17 4 0 0 0 0 0
/proc/23913/statm: 6928 6015 428 1167 0 5709 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 27712

[startup+0.700265 s]
/proc/loadavg: 0.92 0.99 1.14 3/176 23913
/proc/meminfo: memFree=31036472/32873844 swapFree=6080/6080
[pid=23913] ppid=23911 vsize=46144 CPUtime=0.69 cores=0,2,4,6
/proc/23913/stat : 23913 (toysat) R 23911 23913 20249 0 -1 4202496 10813 0 0 0 66 3 0 0 20 0 1 0 287945787 47251456 10734 33554432000 4194304 8973514 140734652500272 140735048316984 7841851 0 2 0 34082818 0 0 0 17 4 0 0 0 0 0
/proc/23913/statm: 11536 10734 428 1167 0 10317 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 46144

[startup+1.50027 s]
/proc/loadavg: 0.92 0.99 1.14 3/177 23952
/proc/meminfo: memFree=30927768/32873844 swapFree=6080/6080
[pid=23913] ppid=23911 vsize=107584 CPUtime=1.49 cores=0,2,4,6
/proc/23913/stat : 23913 (toysat) R 23911 23913 20249 0 -1 4202496 26173 0 0 0 143 6 0 0 20 0 1 0 287945787 110166016 26094 33554432000 4194304 8973514 140734652500272 140734652499768 7841851 0 2 0 34082818 0 0 0 17 4 0 0 0 0 0
/proc/23913/statm: 26896 26094 428 1167 0 25677 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 107584

[startup+3.10026 s]
/proc/loadavg: 0.92 0.99 1.14 3/177 23952
/proc/meminfo: memFree=30815896/32873844 swapFree=6080/6080
[pid=23913] ppid=23911 vsize=191552 CPUtime=3.09 cores=0,2,4,6
/proc/23913/stat : 23913 (toysat) R 23911 23913 20249 0 -1 4202496 46940 0 0 0 299 10 0 0 20 0 1 0 287945787 196149248 46861 33554432000 4194304 8973514 140734652500272 140734652499768 4209325 0 2 0 34082818 0 0 0 17 4 0 0 0 0 0
/proc/23913/statm: 47888 46869 438 1167 0 46669 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 191552

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

[startup+3.30649 s]
/proc/loadavg: 1.01 1.01 1.14 3/177 23952
/proc/meminfo: memFree=30732444/32873844 swapFree=6080/6080
[pid=23913] ppid=23911 vsize=214080 CPUtime=3.29 cores=0,2,4,6
/proc/23913/stat : 23913 (toysat) R 23911 23913 20249 0 -1 4202496 52755 0 0 0 318 11 0 0 20 0 1 0 287945787 219217920 52676 33554432000 4194304 8973514 140734652500272 140734652499768 7937344 0 0 0 34082818 0 0 0 17 4 0 0 0 0 0
/proc/23913/statm: 53520 52676 438 1167 0 52301 0
Current children cumulated CPU time (s) 3.29
Current children cumulated vsize (KiB) 214080

Child status: 2
Real time (s): 3.36011
CPU time (s): 3.35949
CPU user time (s): 3.22551
CPU system time (s): 0.133979
CPU usage (%): 99.9816
Max. virtual memory (cumulated for all children) (KiB): 214080

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 3.22551
system time used= 0.133979
maximum resident set size= 210976
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 52823
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= 4

runsolver used 0.007998 second user time and 0.028995 second system time

The end

Launcher Data 

Begin job on node139 at 2012-05-28 17:16:52
IDJOB=3711841
IDBENCH=79464
IDSOLVER=2291
FILE ID=node139/3711841-1338218212
RUNJOBID= node139-1338218212-23885
PBS_JOBID= 14624580
Free space on /tmp= 71640 MiB

SOLVER NAME= toysat 2012-05-17
BENCH NAME= PB10/normalized-PB10/PARTIAL-BIGINT-LIN/wcsp/driver/normalized-driverlog09_wcsp.wbo
COMMAND LINE= HOME/toysat --wbo BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3711841-1338218212/watcher-3711841-1338218212 -o /tmp/evaluation-result-3711841-1338218212/solver-3711841-1338218212 -C 1800 -W 1900 -M 15500  HOME/toysat --wbo HOME/instance-3711841-1338218212.wbo

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

MD5SUM BENCH= e8d7313df49fc885ba8636db08f3e8b8
RANDOM SEED=1718059325

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		: 2666.750
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	: 5333.50
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		: 2666.750
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	: 5331.91
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		: 2666.750
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	: 5331.90
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		: 2666.750
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	: 5331.91
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		: 2666.750
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	: 5331.92
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		: 2666.750
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	: 5331.91
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		: 2666.750
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	: 5331.91
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		: 2666.750
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	: 5331.91
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:       32873844 kB
MemFree:        31036852 kB
Buffers:          436488 kB
Cached:           533828 kB
SwapCached:          828 kB
Active:           715036 kB
Inactive:         267140 kB
Active(anon):       5056 kB
Inactive(anon):     7968 kB
Active(file):     709980 kB
Inactive(file):   259172 kB
Unevictable:        6080 kB
Mlocked:            6080 kB
SwapTotal:      67108856 kB
SwapFree:       67104692 kB
Dirty:             19436 kB
Writeback:             0 kB
AnonPages:         16160 kB
Mapped:            13452 kB
Shmem:                 8 kB
Slab:             717508 kB
SReclaimable:     159740 kB
SUnreclaim:       557768 kB
KernelStack:        1400 kB
PageTables:         3860 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:    83545776 kB
Committed_AS:     128296 kB
VmallocTotal:   34359738367 kB
VmallocUsed:      346368 kB
VmallocChunk:   34341987984 kB
HardwareCorrupted:     0 kB
AnonHugePages:         0 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:        7872 kB
DirectMap2M:    33538048 kB

Free space on /tmp at the end= 71632 MiB
End job on node139 at 2012-05-28 17:16:56