Trace number 3421595

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
CryptoMiniSat Strange-Night-2-mt (fixed)SAT 0.247962 0.044759

General information on the benchmark

Namecrafted/skvortsov/battleship/
battleship-9-17-sat.cnf
MD5SUM4c14c75b1475700b62c822dfa7b5d924
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.002999
Satisfiable
(Un)Satisfiability was proved
Number of variables153
Number of clauses693
Sum of the clauses size2601
Maximum clause length17
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 2612
Number of clauses of size 30
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 581

Solver Data 

0.00/0.00	c Outputting solution to console
0.00/0.01	c Using 8 threads
0.00/0.02	c This is CryptoMiniSat 3.0.0
0.00/0.02	c WARNING: for repeatability, setting FPU to use double precision
0.00/0.02	c Reading file 'HOME/instance-3421595-1306678718.cnf'
0.00/0.02	c -- header says num vars:            153
0.00/0.02	c -- header says num clauses:         693
0.00/0.02	c -- clauses added:            0 learnts,          693 normals,            0 xors
0.00/0.02	c -- vars added        153
0.00/0.02	c Parsing time:  0.00 s
0.00/0.03	c  N st     0         0       153        81       612         0      2601         0   no data   no data
0.00/0.03	c asymm  cl-useful: 0/81/81 lits-rem:0 time: 0.00
0.00/0.03	c Flit:     0 Blit:      0 bXBeca:    0 bXProp:    0 Bins:      0 BRemL:      0 BRemN:      0 P:  0.0M T:  0.00
0.00/0.04	c blocked clauses removed:        0 vars:      0 tried:           0 T: 0.00 s
0.00/0.04	c bin-w-bin subsume rem            0 bins  time:  0.00 s
0.00/0.04	c subs with bin:        0  lits-rem:         0  v-fix:    0  time:  0.00 s
0.00/0.04	c Subs w/ non-existent bins:      0 l-rem:      0 v-fix:     0 done:    153 time:  0.00 s
0.00/0.04	c Removed useless bin:       0  fixed:     0  props:   0.00M  time:  0.00 s
0.00/0.04	c lits-rem:         0  cl-subs:        0  v-elim:      0  v-fix:    0  time:  0.00 s
0.00/0.04	c Finding binary XORs  T:     0.00 s  found:       0
0.00/0.04	c Finding non-binary XORs:     0.00 s (found:       0, avg size: nan)
0.00/0.04	c calculated reachability. Time: 0.00
0.00/0.04	c Calc default polars -  time:   0.00 s pos:       0 undec:       0 neg:     153
0.00/0.04	c =========================================================================================
0.00/0.04	c types(t): F = full restart, N = normal restart
0.00/0.04	c types(t): S = simplification begin/end, E = solution found
0.00/0.04	c restart types(rt): st = static, dy = dynamic
0.00/0.04	c  t rt  Rest     Confl      Vars   NormCls    BinCls   Learnts    ClLits    LtLits
0.00/0.04	c  B st     0         0       153        81       612         0      2601         0   no data   no data
0.00/0.04	c Following stats are for *FIRST FINISHED THREAD ONLY*
0.00/0.04	c num threads              : 8          
0.00/0.04	c restarts                 : 4          
0.00/0.04	c dynamic restarts         : 0          
0.00/0.04	c static restarts          : 4          
0.00/0.04	c full restarts            : 0          
0.00/0.04	c total simplify time      : 0.00       
0.00/0.04	c learnts DL2              : 0          
0.00/0.04	c learnts size 2           : 612        
0.00/0.04	c learnts size 1           : 0           (0.00      % of vars)
0.00/0.04	c filedLit time            : 0.00        (0.00      % time)
0.00/0.04	c v-elim SatELite          : 0           (0.00      % vars)
0.00/0.04	c SatELite time            : 0.00        (0.00      % time)
0.00/0.04	c v-elim xor               : 0           (0.00      % vars)
0.00/0.04	c xor elim time            : 0.00        (0.00      % time)
0.00/0.04	c num binary xor trees     : 0          
0.00/0.04	c binxor trees' crown      : 0           (nan       leafs/tree)
0.00/0.04	c bin xor find time        : 0.00       
0.00/0.04	c OTF clause improved      : 19          (0.03      clauses/conflict)
0.00/0.04	c OTF impr. size diff      : 20          (1.05       lits/clause)
0.00/0.04	c OTF cl watch-shrink      : 150         (0.27      clauses/conflict)
0.00/0.04	c OTF cl watch-sh-lit      : 222         (1.48       lits/clause)
0.00/0.04	c tried to recurMin cls    : 81          (14.81      % of conflicts)
0.00/0.04	c updated cache            : 0           (0.00       lits/tried recurMin)
0.00/0.04	c unit cls recevied        : 0           (nan       % of units)
0.00/0.04	c unit cls sent            : 0           (nan       % of units)
0.00/0.04	c bin cls recevied         : 0          
0.00/0.04	c bin cls sent             : 0          
0.00/0.04	c clauses over max glue    : 0           (0.00      % of all clauses)
0.00/0.04	c conflicts                : 547         (16091.07  / sec)
0.00/0.04	c decisions                : 789         (0.00      % random)
0.00/0.04	c bogo-props               : 381549      (11224010.12 / sec)
0.00/0.04	c conflict literals        : 30412       (3.17      % deleted)
0.00/0.04	c Memory used              : 475.15      MB
0.00/0.04	c single-thread CPU time   : 0.03        s
0.00/0.04	c all-threads sum CPU time : 0.24        s
0.00/0.04	s SATISFIABLE
0.00/0.04	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 0

Verifier Data 

OK

Watcher Data 

runsolver Copyright (C) 2010-2011 Olivier ROUSSEL

This is runsolver version 3.3.0 (svn: 961)

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-3421595-1306678718/watcher-3421595-1306678718 -o /tmp/evaluation-result-3421595-1306678718/solver-3421595-1306678718 -C 40000 -W 5100 -M 31000 ./strangenight2-mt --threads=8 HOME/instance-3421595-1306678718.cnf 

running on 8 cores: 0,2,4,6,1,3,5,7

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 40000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 40030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 5100 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 31744000 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 31795200 KiB
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 7.44 7.92 7.96 2/366 16660
/proc/meminfo: memFree=22686552/32951124 swapFree=37160472/67111528
[pid=16660] ppid=16658 vsize=92144 CPUtime=0.04 cores=0-7
/proc/16660/stat : 16660 (strangenight2-m) R 16658 16660 16600 0 -1 4202496 420 0 0 0 4 0 0 0 25 0 8 0 779472212 94355456 360 33554432000 4194304 4580107 140736777997872 18446744073709551615 47924844505008 0 0 4096 2 18446744073709551615 0 0 17 6 0 0 0
/proc/16660/statm: 23036 360 302 95 0 18018 0
[pid=16660/tid=16661] ppid=16658 vsize=92144 CPUtime=0 cores=0-7
/proc/16660/task/16661/stat : 16661 (strangenight2-m) R 16658 16660 16600 0 -1 4202560 4 0 0 0 0 0 0 0 25 0 8 0 779472212 94355456 360 33554432000 4194304 4580107 140736777997872 18446744073709551615 47924844504595 0 0 4096 2 0 0 0 -1 0 0 0 0
[pid=16660/tid=16662] ppid=16658 vsize=92144 CPUtime=0 cores=0-7
/proc/16660/task/16662/stat : 16662 (strangenight2-m) R 16658 16660 16600 0 -1 4202560 1 0 0 0 0 0 0 0 25 0 8 0 779472212 94355456 360 33554432000 4194304 4580107 140736777997872 18446744073709551615 47924844504601 0 0 4096 2 0 0 0 -1 2 0 0 0
[pid=16660/tid=16663] ppid=16658 vsize=92144 CPUtime=0 cores=0-7
/proc/16660/task/16663/stat : 16663 (strangenight2-m) R 16658 16660 16600 0 -1 4202560 0 0 0 0 0 0 0 0 25 0 8 0 779472212 94355456 360 33554432000 4194304 4580107 140736777997872 18446744073709551615 47924844505010 0 0 4096 2 0 0 0 -1 2 0 0 0
[pid=16660/tid=16664] ppid=16658 vsize=92144 CPUtime=0 cores=0-7
/proc/16660/task/16664/stat : 16664 (strangenight2-m) R 16658 16660 16600 0 -1 4202560 1 0 0 0 0 0 0 0 25 0 8 0 779472212 94355456 360 33554432000 4194304 4580107 140736777997872 18446744073709551615 47924844504601 0 0 4096 2 0 0 0 -1 1 0 0 0
[pid=16660/tid=16665] ppid=16658 vsize=92144 CPUtime=0 cores=0-7
/proc/16660/task/16665/stat : 16665 (strangenight2-m) R 16658 16660 16600 0 -1 4202560 1 0 0 0 0 0 0 0 25 0 8 0 779472212 94355456 360 33554432000 4194304 4580107 140736777997872 18446744073709551615 47924844504601 0 0 4096 2 0 0 0 -1 3 0 0 0
[pid=16660/tid=16666] ppid=16658 vsize=92144 CPUtime=0 cores=0-7
/proc/16660/task/16666/stat : 16666 (strangenight2-m) R 16658 16660 16600 0 -1 4202560 1 0 0 0 0 0 0 0 25 0 8 0 779472212 94355456 360 33554432000 4194304 4580107 140736777997872 18446744073709551615 47924844504601 0 0 4096 2 0 0 0 -1 6 0 0 0
[pid=16660/tid=16667] ppid=16658 vsize=92144 CPUtime=0 cores=0-7
/proc/16660/task/16667/stat : 16667 (strangenight2-m) R 16658 16660 16600 0 -1 4202560 1 0 0 0 0 0 0 0 25 0 8 0 779472212 94355456 360 33554432000 4194304 4580107 140736777997872 18446744073709551615 47924844504605 0 0 4096 2 0 0 0 -1 4 0 0 0

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

Child status: 10
Real time (s): 0.044759
CPU time (s): 0.247962
CPU user time (s): 0.242963
CPU system time (s): 0.004999
CPU usage (%): 553.993
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.242963
system time used= 0.004999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 1152
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= 846
involuntary context switches= 82

runsolver used 0.002999 second user time and 0.011998 second system time

The end

Launcher Data 

Begin job on node104 at 2011-05-29 16:18:38
IDJOB=3421595
IDBENCH=83242
IDSOLVER=1878
FILE ID=node104/3421595-1306678718
RUNJOBID= node104-1306678716-16614
PBS_JOBID= 13471812
Free space on /tmp= 73416 MiB

SOLVER NAME= CryptoMiniSat Strange-Night-2-mt (fixed)
BENCH NAME= SAT11/crafted/skvortsov/battleship/battleship-9-17-sat.cnf
COMMAND LINE= ./strangenight2-mt --threads=NBCORE BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3421595-1306678718/watcher-3421595-1306678718 -o /tmp/evaluation-result-3421595-1306678718/solver-3421595-1306678718 -C 40000 -W 5100 -M 31000  ./strangenight2-mt --threads=8 HOME/instance-3421595-1306678718.cnf

TIME LIMIT= 40000 seconds
MEMORY LIMIT= 31000 MiB
NBCORE= 8

MD5SUM BENCH= 4c14c75b1475700b62c822dfa7b5d924
RANDOM SEED=1798214815

node104.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		: 2666.855
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	: 5333.71
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		: 2666.855
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	: 5332.83
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		: 2666.855
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	: 5332.67
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		: 2666.855
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	: 5332.80
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		: 2666.855
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	: 5293.18
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		: 2666.855
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	: 5332.83
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		: 2666.855
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		: 2666.855
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	: 5332.82
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32951124 kB
MemFree:      22686708 kB
Buffers:        366428 kB
Cached:        7812460 kB
SwapCached:     152248 kB
Active:        3453940 kB
Inactive:      6498880 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      22686708 kB
SwapTotal:    67111528 kB
SwapFree:     37160472 kB
Dirty:            5472 kB
Writeback:           8 kB
AnonPages:     1634752 kB
Mapped:          10196 kB
Slab:           155264 kB
PageTables:      89144 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS: 87701824 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= 73412 MiB
End job on node104 at 2011-05-29 16:18:38