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I have a mods folder with the mods better sprinting, 5zig, and optifine (all 1.8.8 and most up to date). Whenever I put optifine into it, the game will not load. It will be stuck at "Loading - Initializing Minecraft Engine." I do not understand why. Is there any advice? Here are the logs.

---- Minecraft Crash Report ----

WARNING: coremods are present:
Contact their authors BEFORE contacting forge

// Don't be sad. I'll do better next time, I promise!

Time: 6/9/16 9:29 PM
Description: Initializing game

java.lang.AbstractMethodError: net.minecraft.client.resources.model.ModelRotation.apply(Lnet/minecraftforge/client/model/IModelPart;)Lnet/minecraftforge/client/model/TRSRTransformation;
at net.minecraftforge.client.model.ModelLoader$VanillaModelWrapper.bake(ModelLoader.java:350)
at net.minecraftforge.client.model.ModelLoader.func_177570_a(ModelLoader.java:124)
at net.minecraft.client.resources.model.ModelManager.func_110549_a(ModelManager.java:28)
at net.minecraft.client.resources.SimpleReloadableResourceManager.func_110542_a(SimpleReloadableResourceManager.java:120)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:478)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:329)
at net.minecraft.client.main.Main.main(SourceFile:124)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
at net.minecraftforge.client.model.ModelLoader$VanillaModelWrapper.bake(ModelLoader.java:350)
at net.minecraftforge.client.model.ModelLoader.func_177570_a(ModelLoader.java:124)
at net.minecraft.client.resources.model.ModelManager.func_110549_a(ModelManager.java:28)
at net.minecraft.client.resources.SimpleReloadableResourceManager.func_110542_a(SimpleReloadableResourceManager.java:120)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:478)

-- Initialization --
Details:
Stacktrace:
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:329)
at net.minecraft.client.main.Main.main(SourceFile:124)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
Minecraft Version: 1.8.8
Operating System: Windows 8 (amd64) version 6.2
CPU: 4x Intel(R) Core(TM) i7-6500U CPU @ 2.50GHz
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 370169576 bytes (353 MB) / 569901056 bytes (543 MB) up to 954728448 bytes (910 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP 9.18 Powered by Forge 11.15.0.1596 Optifine OptiFine_1.8.8_HD_U_H6 4 mods loaded, 4 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UCH mcp{9.18} [Minecraft Coder Pack] (minecraft.jar)
UCH FML{8.0.99.99} [Forge Mod Loader] (forge-1.8.8-11.15.0.1596-1.8.8.jar)
UCH Forge{11.15.0.1596} [Minecraft Forge] (forge-1.8.8-11.15.0.1596-1.8.8.jar)
UCH BetterSprinting{1.1.3} [Better Sprinting] (BetterSprinting MC-1.8.8 v1.1.3.jar)
Loaded coremods (and transformers):
GL info: ' Vendor: 'Intel' Version: '4.4.0 - Build 20.19.15.4360' Renderer: 'Intel(R) HD Graphics 520'
Launched Version: 1.8.8-forge1.8.8-11.15.0.1596-1.8.8
LWJGL: 2.9.4
OpenGL: Intel(R) HD Graphics 520 GL version 4.4.0 - Build 20.19.15.4360, Intel
GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

Using VBOs: No
Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Packs: !Dynamic Duo.zip
Current Language: English (US)
Profiler Position: N/A (disabled)
CPU: 4x Intel(R) Core(TM) i7-6500U CPU @ 2.50GHz
The 5zig Mod Version: 3.5.12
Forge: true
GUI: ~~NULL~~

Optifine can't possibly be crashing on it's own, so first of all, I recommend that you take all the mods out except Optifine and see if it works. Then you should put them all back in and take each mod out one by one until the crash is resolved. I would recommend removing 5zig first, because that seems most likely to conflict with Optifine.