iOS の大手メーカーアプリがクラッシュした理由を調べてみる

iOSのアプリはアプリが落ちるとその記録をクラッシュログとして端末に保存します。
それを見ると大体なんで落ちたかが分かります。

MacOSX を使っていれば XCode > Window > Devices から接続した iOSデバイスのクラッシュログを見ることができます。

Windowsの場合はXCode が使えないのですがちゃんと方法があります。
iTunes で同期すると %USERPROFILE%\AppData\Roaming\Apple Computer\Logs\CrashReporter\MobileDevice\ にログが保存されます。

うちの端末を見ると…。
cr
こんな感じ。

では、中をざっくり見てみましょう

Incident Identifier: 9D3F5542-A8D4-417B-8D54-DB0134D5A057
CrashReporter Key:   c8346244647a9766455e24110a0e366ec648df27
Hardware Model:      iPad5,2
Process:             ange [338]
Path:                /private/var/mobile/Containers/Bundle/Application/6FE924E3-EF1B-4D9E-8020-4D5D9A6117EA/ange.app/ange
Identifier:          com.sega.f4.ange
Version:             1.1.4 (1.1.4)
Code Type:           ARM-64 (Native)
Parent Process:      launchd [1]

Date/Time:           2016-04-08 19:06:57.57 +0900
Launch Time:         2016-04-08 08:07:37.37 +0900
OS Version:          iOS 9.2.1 (13D15)
Report Version:      105

Exception Type:  EXC_CRASH (SIGSEGV)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note:  EXC_CORPSE_NOTIFY
Triggered by Thread:  1

Global Trace Buffer (reverse chronological seconds):
0.822575     CFNetwork                     0x0000000181fe184c TCP Conn 0x14e6ba000 SSL Handshake DONE
0.939185     CFNetwork                     0x0000000181fe175c TCP Conn 0x14e6ba000 starting SSL negotiation
0.940694     CFNetwork                     0x0000000182083104 TCP Conn 0x14e6ba000 complete. fd: 18, err: 0
0.942007     CFNetwork                     0x0000000182084630 TCP Conn 0x14e6ba000 event 1. err: 0

Thread 1 name:  Dispatch queue: com.apple.libdispatch-manager
Thread 1 Crashed:
0   libsystem_kernel.dylib            0x00000001815ad4fc kevent_qos + 8
1   libdispatch.dylib                 0x000000018147094c _dispatch_mgr_invoke + 232
2   libdispatch.dylib                 0x000000018145f7bc _dispatch_source_invoke + 0

Thread 1 crashed with ARM Thread State (64-bit):
    x0: 0x0000000000000004   x1: 0x0000000000000000   x2: 0x0000000000000000   x3: 0x000000016e0a25a8
    x4: 0x0000000000000001   x5: 0x0000000000000000   x6: 0x0000000000000000   x7: 0x0000000000000000
    x8: 0x000000019f300140   x9: 0x0000000000000000  x10: 0x0000000000000002  x11: 0x0000000000084e18
   x12: 0x000000019f300d40  x13: 0x0000000019b64bdf  x14: 0x0000000000000000  x15: 0x000000b14a895eb1
   x16: 0x0000000000000176  x17: 0x000000018145d6b8  x18: 0x0000000000000000  x19: 0x000000019e3b7000
   x20: 0x000000019e3b7000  x21: 0x000000019e3b7000  x22: 0x000000019f300100  x23: 0x000000019f301000
   x24: 0x000000019f301000  x25: 0x0000000000000000  x26: 0x000000016e0a30e0  x27: 0x000000016e0a30e0
   x28: 0x0000000000000000  fp: 0x000000016e0a2630   lr: 0x000000018147094c
    sp: 0x000000016e0a25a0   pc: 0x00000001815ad4fc cpsr: 0x60000000

まず、これは アンジュ・ヴィエルジュ ~第2風紀委員 ガールズバトル~

という、SEGAがブランド名だけ貸して作らせてるゲームなんですが、サーバーメンテナンス後の更新で必ずアプリがクラッシュするという不具合あります

SIGSEGV 出てるので、典型的なアクセスバイオレーションによるセグメンテーションフォールトだというのが分かります。EXC_CORPSE_NOTIFYなんで、iOSがらみのバグでしょうか?

Incident Identifier: 83B7BE06-F498-4E09-B50A-D7FF56D1A929
CrashReporter Key:   c8346244647a9766455e24110a0e366ec648df27
Hardware Model:      iPad5,2
Process:             Janetter-iPhone [6683]
Path:                /private/var/mobile/Containers/Bundle/Application/DAB2744D-7083-40CD-99FA-AA0B39456B13/Janetter-iPhone.app/Janetter-iPhone
Identifier:          net.janesoft.janetter-iPhone
Version:             114 (1.6.8)
Code Type:           ARM-64 (Native)
Parent Process:      launchd [1]

Date/Time:           2016-04-05 22:08:26.26 +0900
Launch Time:         2016-04-05 21:58:51.51 +0900
OS Version:          iOS 9.2.1 (13D15)
Report Version:      105

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000000000027
Triggered by Thread:  0

Global Trace Buffer (reverse chronological seconds):
53.003471    CFNetwork                     0x0000000183e47104 TCP Conn 0x12fceeb80 complete. fd: 42, err: 0
53.004322    CFNetwork                     0x0000000183e48630 TCP Conn 0x12fceeb80 event 1. err: 0
53.041409    CFNetwork                     0x0000000183e48708 TCP Conn 0x12fceeb80 started
53.046966    AppleJPEG                     0x0000000184e34ff4 [0x12edaa400] Decoding completed without errors
53.049254    AppleJPEG                     0x0000000184e3318c [0x12edaa400] Options: 640x100 [FFFFFFFF,FFFFFFFF] 00025060
53.049254    AppleJPEG                     0x0000000184e33044 [0x12edaa400] Decoding: C0 0x02800064 0x0000354A 0x11111100 0x00000000 47050
53.049986    AppleJPEG                     0x0000000184e32338 [0x12edaa400] Created session
53.049986    AppleJPEG                     0x0000000184e32b54 [0x12edaa400] Releasing session
53.181787&
nbsp;   AppleJPEG                     0x0000000184e32338 [0x12edaa400] Created session

Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0   libobjc.A.dylib                   0x0000000182e4ba20 std::__1::__tree_iterator<std::__1::__value_type<void*, objc_references_support::ObjcAssociation>, std::__1::__tree_node<std::__1::__value_type<void*, objc_references_support::ObjcAssociation>, void*>*, long> std::__1::__tree<std::__1::__value_type<void*, objc_references_support::ObjcAssociation>, std::__1::__map_value_compare<void*, std::__1::__value_type<void*, objc_references_support::ObjcAssociation>, objc_references_support::ObjectPointerLess, true>, objc_references_support::ObjcAllocator<std::__1::__value_type<void*, objc_references_support::ObjcAssociation> > >::find<void*>(void* const&) + 20
1   libobjc.A.dylib                   0x0000000182e4b450 _object_set_associative_reference + 256
2   UIKit                             0x00000001887ce4d4 __UIViewWillBeRemovedFromSuperview + 212
3   UIKit                             0x00000001884b8a70 -[UIView(Hierarchy) removeFromSuperview] + 96
4   UIKit                             0x00000001884bbeb8 -[UIView dealloc] + 952
5   UIKit                             0x00000001885a2910 -[UITableViewCell dealloc] + 336
6   Janetter-iPhone                   0x000000010013eb30 0x100048000 + 1010480
7   Janetter-iPhone                   0x00000001000a2834 0x100048000 + 370740
8   libobjc.A.dylib                   0x0000000182e55ae8 (anonymous namespace)::AutoreleasePoolPage::pop(void*) + 508
9   CoreFoundation                    0x00000001836b142c _CFAutoreleasePoolPop + 28
10  Foundation                        0x000000018418fec8 __NSThreadPerformPerform + 508
11  CoreFoundation                    0x0000000183784efc __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 24
12  CoreFoundation                    0x0000000183784990 __CFRunLoopDoSources0 + 540
13  CoreFoundation                    0x0000000183782690 __CFRunLoopRun + 724
14  CoreFoundation                    0x00000001836b1680 CFRunLoopRunSpecific + 384
15  GraphicsServices                  0x0000000184bc0088 GSEventRunModal + 180
16  UIKit                             0x0000000188528d90 UIApplicationMain + 204
17  Janetter-iPhone                   0x00000001001576b0 0x100048000 + 1111728
18  libdyld.dylib                     0x00000001832528b8 start + 4

Thread 0 crashed with ARM Thread State (64-bit):
    x0: 0x000000012f33bb78   x1: 0x000000016fdb6298   x2: 0x000000012f33bb78   x3: 0x0000000000000001
    x4: 0x0000000000000010   x5: 0x0000000000000001   x6: 0x0000000000000000   x7: 0x0000000000000b20
    x8: 0x0000000000000007   x9: 0x000000019d1411f0  x10: 0x000000012f80ba70  x11: 0x0000000000000630
   x12: 0xfffffffed077dabf  x13: 0x0000000000000630  x14: 0x00000000ffffffff  x15: 0x00000000fffffff8
   x16: 0x0000000188e9e102  x17: 0x0000000185ec2b3c  x18: 0x0000000000000000  x19: 0x000000012f33bb70
   x20: 0x0000000000000000  x21: 0x000000012f882540  x22: 0x000000012de146e0  x23: 0x00000001a10c2000
   x24: 0x00000001a0538000  x25: 0x3600e8b67bf75da7  x26: 0x0000000188e9d26b  x27: 0x000000012f963d90
   x28: 0x0000000000000001  fp: 0x000000016fdb62d0   lr: 0x0000000182e4b450
    sp: 0x000000016fdb6290   pc: 0x0000000182e4ba20 cpsr: 0x80000000

こっちは、Janetter for Twitter
同じSIGSEGVですが KERN_INVALID_ADDRESS at 0x0000000000000027 なので、
OBJECTがNULLなのを確認せずにアクセスしてオフセット +27hのオブジェクト情報にアクセスしてる典型的な『ぬるぽ』です。 Janetter らしいといえば、らしいんですが、おそらく実機でデバッグしたら確実分かると思われるバグですね ・ω・
左ペインのツリークリックしてたらよく落ちるんで、触るの怖いです

Incident Identifier: A7D3058D-A01D-49B9-BE91-3A1FB7A8D694
CrashReporter Key:   c8346244647a9766455e24110a0e366ec648df27
Hardware Model:      iPad5,2
Process:             gf-onpu [5752]
Path:                /var/mobile/Containers/Bundle/Application/001AE433-47B7-401C-B6C6-B3B5E0BFE726/gf-onpu.app/gf-onpu
Identifier:          jp.co.cyberagent.gf-onpu
Version:             56 (1.3.0)
Code Type:           ARM-64 (Native)
Parent Process:      launchd [1]

Date/Time:           2016-04-01 23:58:52.52 +0900
Launch Time:         2016-04-01 23:58:06.06 +0900
OS Version:          iOS 9.2.1 (13D15)
Report Version:      105

Exception Type:  EXC_RESOURCE
Exception Subtype: WAKEUPS
Exception Message: (Limit 150/sec) Observed 1000/sec over 300 secs
Exception Note:  NON-FATAL CONDITION (this is NOT a crash)
Triggered by Thread:  0

Glo
bal Trace Buffer (reverse chronological seconds):
30.724731    CFNetwork                     0x0000000183da584c TCP Conn 0x12ae26eb0 SSL Handshake DONE
30.871321    CFNetwork                     0x0000000183da575c TCP Conn 0x12ae26eb0 starting SSL negotiation
30.871830    CFNetwork                     0x0000000183e47104 TCP Conn 0x12ae26eb0 complete. fd: 16, err: 0
30.872824    CFNetwork                     0x0000000183e48630 TCP Conn 0x12ae26eb0 event 1. err: 0
31.007849    CFNetwork                     0x0000000183e48708 TCP Conn 0x12ae26eb0 started
40.504423    CFNetwork                     0x0000000183da584c TCP Conn 0x12aafa300 SSL Handshake DONE
40.554831    CFNetwork                     0x0000000183da575c TCP Conn 0x12aafa300 starting SSL negotiation
40.555103    CFNetwork                     0x0000000183e47104 TCP Conn 0x12aafa300 complete. fd: 25, err: 0
40.556037    CFNetwork                     0x0000000183e48630 TCP Conn 0x12aafa300 event 1. err: 0
40.603784    CFNetwork                     0x0000000183e48708 TCP Conn 0x12aafa300 started
40.605136    CFNetwork                     0x0000000183da584c TCP Conn 0x12aaf5040 SSL Handshake DONE
40.725271    CFNetwork                     0x0000000183da575c TCP Conn 0x12aaf5040 starting SSL negotiation
40.725514    CFNetwork                     0x0000000183e47104 TCP Conn 0x12aaf5040 complete. fd: 21, err: 0
40.726105    CFNetwork                     0x0000000183e48630 TCP Conn 0x12aaf5040 event 1. err: 0
40.832769    CFNetwork                     0x0000000183e48708 TCP Conn 0x12aaf5040 started
40.840864    CFNetwork                     0x0000000183e9d8bc Creating default cookie storage with default identifier
40.840864    CFNetwork                     0x0000000183e9d888 Faulting in CFHTTPCookieStorage singleton
40.840864    CFNetwork                     0x0000000183eef558 Faulting in NSHTTPCookieStorage singleton
41.082050    CFNetwork                     0x0000000183da584c TCP Conn 0x12abe0170 SSL Handshake DONE
41.090093    CFNetwork                     0x0000000183da584c TCP Conn 0x12aaac360 SSL Handshake DONE
41.221559    CFNetwork                     0x0000000183da575c TCP Conn 0x12abe0170 starting SSL negotiation
41.225283    CFNetwork                     0x0000000183e47104 TCP Conn 0x12abe0170 complete. fd: 17, err: 0
41.232953    CFNetwork                     0x0000000183e48630 TCP Conn 0x12abe0170 event 1. err: 0
41.236159    CFNetwork                     0x0000000183da575c TCP Conn 0x12aaac360 starting SSL negotiation
41.237052    CFNetwork                     0x0000000183e47104 TCP Conn 0x12aaac360 complete. fd: 15, err: 0
41.239206    CFNetwork                     0x0000000183e48630 TCP Conn 0x12aaac360 event 1. err: 0
41.429532    CFNetwork                     0x0000000183e48708 TCP Conn 0x12aaac360 started
41.429563    CFNetwork                     0x0000000183e48708 TCP Conn 0x12abe0170 started

Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0 Attributed:
0   libsystem_platform.dylib          0x000000018342e340 0x18342c000 + 9024
1   AGXGLDriver                       0x0000000194a358ec 0x1949f8000 + 252140
2   GLEngine                          0x0000000195a17860 0x195990000 + 555104
3   GLEngine                          0x00000001959f1a90 0x195990000 + 400016
4   gf-onpu                           0x0000000101323898 0x1000c4000 + 19265688
5   gf-onpu                           0x0000000101324020 0x1000c4000 + 19267616
6   gf-onpu                           0x00000001014488dc 0x1000c4000 + 20465884
7   gf-onpu                           0x00000001013a1dd4 0x1000c4000 + 19783124
8   gf-onpu                           0x00000001013a24b8 0x1000c4000 + 19784888
9   gf-onpu           
                0x00000001013a9120 0x1000c4000 + 19812640
10  gf-onpu                           0x00000001013ad544 0x1000c4000 + 19830084
11  gf-onpu                           0x00000001013ada04 0x1000c4000 + 19831300
12  gf-onpu                           0x00000001013c7438 0x1000c4000 + 19936312
13  gf-onpu                           0x00000001014c6b34 0x1000c4000 + 20982580
14  gf-onpu                           0x00000001014c722c 0x1000c4000 + 20984364
15  gf-onpu                           0x00000001012b6cc8 0x1000c4000 + 18820296
16  gf-onpu                           0x00000001000cded0 0x1000c4000 + 40656
17  gf-onpu                           0x00000001000cd824 0x1000c4000 + 38948
18  libdispatch.dylib                 0x0000000183221630 0x183220000 + 5680
19  libdispatch.dylib                 0x00000001832215f0 0x183220000 + 5616
20  libdispatch.dylib                 0x0000000183226cf8 0x183220000 + 27896
21  CoreFoundation                    0x0000000183784bb0 0x1836a8000 + 904112
22  CoreFoundation                    0x0000000183782a18 0x1836a8000 + 895512
23  CoreFoundation                    0x00000001836b1680 CFRunLoopRunSpecific + 384
24  GraphicsServices                  0x0000000184bc0088 0x184bb4000 + 49288
25  UIKit                             0x0000000188528d90 0x1884ac000 + 511376
26  gf-onpu                           0x00000001000ca0f4 0x1000c4000 + 24820
27  libdyld.dylib                     0x00000001832528b8 0x183250000 + 10424

Thread 0 crashed with ARM Thread State (64-bit):
    x0: 0x0000000126501c60   x1: 0x000000012a9f1808   x2: 0x0000000000000000   x3: 0x0000000126501c70
    x4: 0x000000016fd39d18   x5: 0x0000000000000038   x6: 0x0004c80400045903   x7: 0x0000000000000100
    x8: 0x000000000000000c   x9: 0x0000000128023c90  x10: 0x0000000000000800  x11: 0x0000000000000020
   x12: 0x0000000000000000  x13: 0xfffffffffcfc0000  x14: 0x0000000000000002  x15: 0x8140000003050202
   x16: 0x000000018342e1f0  x17: 0x0000000000000002  x18: 0x0000000000000000  x19: 0x0000000129000000
   x20: 0x000000012a9f17d0  x21: 0x0000000000000005  x22: 0x0000000000000008  x23: 0x000000012b0ba200
   x24: 0x0000000000000000  x25: 0x0000000000000001  x26: 0x000000012801c610  x27: 0x0000000128022fc0
   x28: 0x0000000000000001  fp: 0x000000016fd39d40   lr: 0x0000000194a358ec
    sp: 0x000000016fd39d40   pc: 0x000000018342e340 cpsr: 0x60000000

ガールフレンド(おんぷ)
よく起動時の画面で応答がなくなってフリーズするのでログを見てみました。

EXC_RESOURCE Exception
(Limit 150/sec) Observed 1000/sec over 300 secsException
Note:  NON-FATAL CONDITION (this is NOT a crash)
『CPUが5分で150秒(CPU使用率50%)までの利用制限なのに、333%使ってたのでシステムがアプリけしょんを強制終了させたので、クラッシュじゃないよ。』って書いてます。
ログ見るとネットワークアクセスに失敗してぐるぐる回ってるみたいなので、サーバーの負荷が酷くてエラーが帰ってきたときに、うまくエラー処理できなくなって、CPU使い切ってるような気がしますね。

Incident Identifier: 2AC78391-4ECE-440F-A1E8-F4A12B8DE7D8
CrashReporter Key:   c8346244647a9766455e24110a0e366ec648df27
Hardware Model:      iPad5,2
Process:             ange [5975]
Path:                /var/mobile/Containers/Bundle/Application/6FE924E3-EF1B-4D9E-8020-4D5D9A6117EA/ange.app/ange
Identifier:          com.sega.f4.ange
Version:             1.1.4 (1.1.4)
Code Type:           ARM-64 (Native)
Parent Process:      launchd [1]

Date/Time:           2016-04-03 13:29:55.55 +0900
Launch Time:         2016-04-03 13:10:29.29 +0900
OS Version:          iOS 9.2.1 (13D15)
Report Version:      105

Exception Type:  EXC_RESOURCE
Exception Subtype: WAKEUPS
Exception Message: (Limit 150/sec) Observed 169/sec over 300 secs
Exception Note:  NON-FATAL CONDITION (this is NOT a crash)
Triggered by Thread:  11

Filtered syslog:
None found

Global Trace Buffer (reverse chronological seconds):
207.026869   AppleJPEG                     0x0000000184e34ff4 [0x157b26c00] Decoding completed without errors
207.028866   AppleJPEG                     0x0000000184e3318c [0x157b26c00] Options: 160x366 [FFFFFFFF,FFFFFFFF] 00025060
207.028866   AppleJPEG                     0x0000000184e33044 [0x157b26c00] Decoding: C0 0x00A0016E 0x0000354A 0x22111100 0x00000000 16697
207.310006   AppleJPEG    &n
bsp;                0x0000000184e34ff4 [0x157a69c00] Decoding completed without errors
207.310407   AppleJPEG                     0x0000000184e3318c [0x157a69c00] Options: 160x366 [FFFFFFFF,FFFFFFFF] 00025060
207.310407   AppleJPEG                     0x0000000184e33044 [0x157a69c00] Decoding: C0 0x00A0016E 0x0000354A 0x22111100 0x00000000 17228
207.650859   AppleJPEG                     0x0000000184e34ff4 [0x157b1c000] Decoding completed without errors
207.651189   AppleJPEG                     0x0000000184e3318c [0x157b1c000] Options: 160x366 [FFFFFFFF,FFFFFFFF] 00025060
207.651189   AppleJPEG                     0x0000000184e33044 [0x157b1c000] Decoding: C0 0x00A0016E 0x0000354A 0x22111100 0x00000000 16794
208.572404   AppleJPEG                     0x0000000184e32b54 [0x1572d3e00] Releasing session
208.688907   AppleJPEG                     0x0000000184e32b54 [0x157044000] Releasing session
208.818878   AppleJPEG                     0x0000000184e32b54 [0x157495800] Releasing session
208.819751   AppleJPEG                     0x0000000184e32b54 [0x15792d400] Releasing session
208.819751   AppleJPEG                     0x0000000184e32b54 [0x1573b3e00] Releasing session
208.822549   AppleJPEG                     0x0000000184e34ff4 [0x1574f7000] Decoding completed without errors
208.822624   AppleJPEG                     0x0000000184e3318c [0x1574f7000] Options: 244x28 [FFFFFFFF,FFFFFFFF] 00025060
208.822624   AppleJPEG                     0x0000000184e33044 [0x1574f7000] Decoding: C0 0x00F4001C 0x0000354A 0x22111100 0x00000000 521
208.822901   AppleJPEG                     0x0000000184e34ff4 [0x157c31000] Decoding completed without errors
208.822987   AppleJPEG                     0x0000000184e3318c [0x157c31000] Options: 244x28 [FFFFFFFF,FFFFFFFF] 00025060
208.822987   AppleJPEG                     0x0000000184e33044 [0x157c31000] Decoding: C0 0x00F4001C 0x0000354A 0x22111100 0x00000000 535
208.823027   AppleJPEG                     0x0000000184e34ff4 [0x157ba6800] Decoding completed without errors
208.823151   AppleJPEG                     0x0000000184e3318c [0x157ba6800] Options: 244x28 [FFFFFFFF,FFFFFFFF] 00025060
208.823151   AppleJPEG                     0x0000000184e33044 [0x157ba6800] Decoding: C0 0x00F4001C 0x0000354A 0x22111100 0x00000000 504
208.834889   AppleJPEG                     0x0000000184e34ff4 [0x157a60000] Decoding completed without errors
208.835153   AppleJPEG                     0x0000000184e3318c [0x157a60000] Options: 160x366 [FFFFFFFF,FFFFFFFF] 00025060
208.835153   AppleJPEG                     0x0000000184e33044 [0x157a60000] Decoding: C0 0x00A0016E 0x0000354A 0x22111100 0x00000000 16429
208.835972   AppleJPEG                     0x0000000184e34ff4 [0x157aa2000] Decoding completed without errors
208.836167   AppleJPEG                     0x0000000184e3318c [0x157aa2000] Options: 160x366 [FFFFFFFF,FFFFFFFF] 00025060
208.836167   AppleJPEG                     0x0000000184e33044 [0x157aa2000] Decoding: C0 0x00A0016E 0x0000354A 0x22111100 0x00000000 17699
208.836973   AppleJPEG                     0x0000000184e34ff4 [0x157a98400] Decoding completed without errors
208.837170   AppleJPEG                     0x0000000184e3318c [0x157a98400] Options: 160x366 [FFFFFFFF,FFFFFFFF] 00025060
208.837170   AppleJPEG                     0x0000000184e33044 [0x157a98400] Decoding: C0 0x00A0016E 0x0000354

アンジュ・ヴィエルジュ ~第2風紀委員 ガールズバトル~
の別パターンのクラッシュ。
メモリが足りなくなってきてるのと必要がない同じ画像リソースのロードが繰り返されてるのがわかります。
で、CPU使用率が、画像ロードのループで重くなりすぎて耐えきれなくてOS側から落とされたというのが分かりますね。

Incident Identifier: 50FF0506-0317-49AB-9A50-29096E835FA9
CrashReporter Key:   c8346244647a9766455e24110a0e366ec648df27
Hardware Model:      iPad5,2
Process:             bgirl [4967]
Path:                /var/mobile/Containers/Bundle/Application/68B17D57-C044-4808-960C-7D2497850A66/bgirl.app/bgirl
Identifier:          jp.colopl.bgirl
Version:             79 (1.1.2)
Code Type:           ARM-64 (Native)
Parent Process:      launchd [1]

Date/Time:           2016-03-30 01:21:34.34 +0900
Launch Time:         2016-03-30 00:15:07.07 +0900
OS
Version:          iOS 9.2.1 (13D15)
Report Version:      105

Exception Type:  00000020
Exception Codes: 0x000000008badf00d
Exception Note:  SIMULATED (this is NOT a crash)
Highlighted by Thread:  0

Application Specific Information:
jp.colopl.bgirl failed to scene-update after 10.00s

Elapsed total CPU time (seconds): 5231.410 (user 5231.410, system 0.000), 66% CPU
Elapsed application CPU time (seconds): 4556.599, 57% CPU

白猫プロジェクトのコロプラ が作ってるバトルガール ハイスクールです。
先ほど5分タイマーの監視でCPU使いすぎるとクラッシュってのがありましたが、こちらは8000秒間での50%制限超えによる強制終了だとおもわれます。

ちなみに、このログファイル、Windowsならば、WordPadで開くといいかと思います・ω・

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