iOSアプリを作成しているが、実機に入れた時メッセージが出る

###前提・実現したいこと
iOSアプリを作成し実機にインストールしたところ、落ちたりはしないが以下のようなメッセージが出る。
何が原因と考えられるのか、どんな時に出るメッセージなのか教えて欲しい。

###発生している問題・エラーメッセージ

2016-09-04 18:47:31.095 AAAAA[941:247500] Unable to simultaneously satisfy constraints.
	Probably at least one of the constraints in the following list is one you don't want. 
	Try this: 
		(1) look at each constraint and try to figure out which you don't expect; 
		(2) find the code that added the unwanted constraint or constraints and fix it. 
(
    "<NSLayoutConstraint:0x146e89d30 V:[UIButton:0x146e89a70' '(50)]>",
    "<NSLayoutConstraint:0x146e92400 V:[UIButton:0x146e9cde0'Button'(40)]>",
    "<NSLayoutConstraint:0x146e931a0 V:[UIButton:0x146e89a70' ']-(0)-|   (Names: '|':UIView:0x146e935e0 )>",
    "<NSLayoutConstraint:0x146e93290 UIButton:0x146e9cde0'Button'.centerY == UIButton:0x146e89a70' '.centerY>",
    "<NSLayoutConstraint:0x146e93330 V:[UIButton:0x146e9cde0'Button']-(0)-|   (Names: '|':UIView:0x146e935e0 )>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x146e89d30 V:[UIButton:0x146e89a70' '(50)]>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2016-09-04 18:47:31.096 AAAAA[941:247500] Unable to simultaneously satisfy constraints.
	Probably at least one of the constraints in the following list is one you don't want. 
	Try this: 
		(1) look at each constraint and try to figure out which you don't expect; 
		(2) find the code that added the unwanted constraint or constraints and fix it. 
(
    "<NSLayoutConstraint:0x146e89730 V:[UIButton:0x146e6bc10' '(50)]>",
    "<NSLayoutConstraint:0x146e92400 V:[UIButton:0x146e9cde0'Button'(40)]>",
    "<NSLayoutConstraint:0x146e93290 UIButton:0x146e9cde0'Button'.centerY == UIButton:0x146e89a70' '.centerY>",
    "<NSLayoutConstraint:0x146e93330 V:[UIButton:0x146e9cde0'Button']-(0)-|   (Names: '|':UIView:0x146e935e0 )>",
    "<NSLayoutConstraint:0x146e6fc50 UIButton:0x146e6bc10' '.centerY == UIButton:0x146e89a70' '.centerY>",
    "<NSLayoutConstraint:0x146e6fca0 V:[UIButton:0x146e6bc10' ']-(0)-|   (Names: '|':UIView:0x146e935e0 )>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x146e89730 V:[UIButton:0x146e6bc10' '(50)]>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2016-09-04 18:47:31.101 AAAAA[941:247500] Unable to simultaneously satisfy constraints.
	Probably at least one of the constraints in the following list is one you don't want. 
	Try this: 
		(1) look at each constraint and try to figure out which you don't expect; 
		(2) find the code that added the unwanted constraint or constraints and fix it. 
(
    "<NSLayoutConstraint:0x146e8a430 V:[UIButton:0x146e8a170' '(50)]>",
    "<NSLayoutConstraint:0x146e92400 V:[UIButton:0x146e9cde0'Button'(40)]>",
    "<NSLayoutConstraint:0x146e93290 UIButton:0x146e9cde0'Button'.centerY == UIButton:0x146e89a70' '.centerY>",
    "<NSLayoutConstraint:0x146e93330 V:[UIButton:0x146e9cde0'Button']-(0)-|   (Names: '|':UIView:0x146e935e0 )>",
    "<NSLayoutConstraint:0x146e6fed0 V:[UIButton:0x146e8a170' ']-(0)-|   (Names: '|':UIView:0x146e935e0 )>",
    "<NSLayoutConstraint:0x146ea5090 UIButton:0x146e8a170' '.centerY == UIButton:0x146e89a70' '.centerY>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x146e8a430 V:[UIButton:0x146e8a170' '(50)]>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.