The problem came from Google Analytics.
Updated from 3.0 to 3.0.2.
So it seems that the crash came from an outside library.
2014-01-06 14:58:39.518 TestApp[1099:1403] WARNING: GoogleAnalytics 3.0 void GAIUncaughtExceptionHandler(NSException *) (GAIUncaughtExceptionHandler.m:49): Uncaught exception: *** -[WebCoreSharedBufferData getBytes:range:]: range {0, 4000} exceeds data length 0
2014-01-06 14:58:44.542 TestApp[1099:1403] *** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[WebCoreSharedBufferData getBytes:range:]: range {0, 4000} exceeds data length 0'
*** First throw call stack:
(0x30996e83 0x3b0326c7 0x30996dc5 0x312d1d05 0x308ef2ad 0x316d0397 0x316d0271 0x316ec417 0x316eb7ef 0x316eb535 0x316eb36d 0x316eb2db 0x316ef249 0x316eed27 0x316d7c8b 0x30a1e46d 0x32dc94e1 0x32dc8991 0x32db480b 0x32db432d 0x32db1083 0x32daf7a1 0x3b51be7b 0x3b518f93 0x3b51c745 0x3b51c9c5 0x3b646dff 0x3b646cc4)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb) bt
* thread #3: tid = 0x2b343, 0x3b5e21fc libsystem_kernel.dylib`__pthread_kill + 8, queue = 'CA::CG::Queue, stop reason = signal SIGABRT
frame #0: 0x3b5e21fc libsystem_kernel.dylib`__pthread_kill + 8
frame #1: 0x3b649a52 libsystem_pthread.dylib`pthread_kill + 58
frame #2: 0x3b59302c libsystem_c.dylib`abort + 76
frame #3: 0x3a9e198e libc++abi.dylib`abort_message + 74
frame #4: 0x3a9fa6e6 libc++abi.dylib`default_terminate_handler() + 254
frame #5: 0x3b032938 libobjc.A.dylib`_objc_terminate() + 192
frame #6: 0x3a9f81b2 libc++abi.dylib`std::__terminate(void (*)()) + 78
frame #7: 0x3a9f7a08 libc++abi.dylib`__cxa_throw + 116
frame #8: 0x3b03279a libobjc.A.dylib`objc_exception_throw + 250
frame #9: 0x30996dc4 CoreFoundation`+[NSException raise:format:] + 112
frame #10: 0x312d1d04 Foundation`-[NSData(NSData) getBytes:range:] + 240
frame #11: 0x308ef2ac CoreFoundation`CFDataGetBytes + 204
frame #12: 0x316d0396 ImageIO`CGImageReadGetBytesAtOffset + 282
frame #13: 0x316d0270 ImageIO`CGImageReadSessionGetBytes + 28
frame #14: 0x316ec416 ImageIO`fill_input_buffer + 150
frame #15: 0x316eb7ee ImageIO`read_markers + 150
frame #16: 0x316eb534 ImageIO`consume_markers + 36
frame #17: 0x316eb36c ImageIO`_cg_jpeg_consume_input + 104
frame #18: 0x316eb2da ImageIO`_cg_jpeg_read_header + 42
frame #19: 0x316ef248 ImageIO`startDecompressing + 60
frame #20: 0x316eed26 ImageIO`copyImageBlockSetJPEG + 3214
frame #21: 0x316d7c8a ImageIO`ImageProviderCopyImageBlockSetCallback + 538
frame #22: 0x30a1e46c CoreGraphics`CGImageProviderCopyImageBlockSetWithOptions + 136
frame #23: 0x32dc94e0 QuartzCore`CA::Render::create_image(CGImage*, CGColorSpace*, unsigned int) + 680
frame #24: 0x32dc8990 QuartzCore`CA::Render::copy_image(CGImage*, CGColorSpace*, unsigned int, double) + 292
frame #25: 0x32db480a QuartzCore`CA::CG::fill_image(CA::CG::Renderer&, CGImage*, CA::Rect const&, CA::Mat2<float> const&, bool, bool, CGInterpolationQuality, CA::Bounds const*) + 1234
frame #26: 0x32db432c QuartzCore`CA::CG::DrawImage::draw_image(CA::CG::Renderer&, bool) const + 80
frame #27: 0x32db1082 QuartzCore`CA::CG::DrawOp::render(CA::CG::Renderer&) const + 2146
frame #28: 0x32daf7a0 QuartzCore`CA::CG::Queue::render_callback(void*) + 268
frame #29: 0x3b51be7a libdispatch.dylib`_dispatch_queue_drain + 374
frame #30: 0x3b518f92 libdispatch.dylib`_dispatch_queue_invoke + 42
frame #31: 0x3b51c744 libdispatch.dylib`_dispatch_root_queue_drain + 76
frame #32: 0x3b51c9c4 libdispatch.dylib`_dispatch_worker_thread2 + 56
frame #33: 0x3b646dfe libsystem_pthread.dylib`_pthread_wqthread + 298
frame #34: 0x3b646cc4 libsystem_pthread.dylib`start_wqthread + 8
(lldb)