저가 포켓몬모드 1.8.9 로 하려고 하는데 깐후 플레이 버튼누르면 4/7까지된후 

---- Minecraft Crash Report ----

WARNING: coremods are present:
  Java8CheckerCoremod (픽셀몬4.2.5[번역-빨간광물].jar)
Contact their authors BEFORE contacting forge

// Daisy, daisy...

Time: 16. 10. 7 오후 11:38
Description: There was a severe problem during mod loading that has caused the game to fail

net.minecraftforge.fml.common.LoaderException: java.lang.OutOfMemoryError: Java heap space
    at net.minecraftforge.fml.common.LoadController.transition(LoadController.java:162)
    at net.minecraftforge.fml.common.Loader.initializeMods(Loader.java:739)
    at net.minecraftforge.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:310)
    at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:495)
    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)
Caused by: java.lang.OutOfMemoryError: Java heap space
    at java.lang.AbstractStringBuilder.<init>(AbstractStringBuilder.java:68)
    at java.lang.StringBuffer.<init>(StringBuffer.java:116)
    at java.util.regex.Matcher.replaceAll(Matcher.java:953)
    at com.pixelmonmod.pixelmon.client.models.smd.SmdAnimation.parseBone(SmdAnimation.java:74)
    at com.pixelmonmod.pixelmon.client.models.smd.SmdAnimation.loadSmdAnim(SmdAnimation.java:57)
    at com.pixelmonmod.pixelmon.client.models.smd.SmdAnimation.<init>(SmdAnimation.java:29)
    at com.pixelmonmod.pixelmon.client.models.smd.ValveStudioModel.loadQC(ValveStudioModel.java:90)
    at com.pixelmonmod.pixelmon.client.models.smd.ValveStudioModel.<init>(ValveStudioModel.java:53)
    at com.pixelmonmod.pixelmon.client.models.smd.ValveStudioModelLoader.loadModel(ValveStudioModelLoader.java:70)
    at com.pixelmonmod.pixelmon.enums.EnumCustomModel.preloadModels(EnumCustomModel.java:304)
    at com.pixelmonmod.pixelmon.client.ClientProxy.registerRenderers(ClientProxy.java:209)
    at com.pixelmonmod.pixelmon.Pixelmon.init(Pixelmon.java:132)
    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.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:560)
    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 com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
    at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
    at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
    at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
    at com.google.common.eventbus.EventBus.post(EventBus.java:275)
    at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:211)
    at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:189)
    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)

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

-- System Details --
Details:
    Minecraft Version: 1.8.9
    Operating System: Windows 7 (x86) version 6.1
    CPU: 4x Intel(R) Core(TM) i5-4460 CPU @ 3.20GHz
    Java Version: 1.8.0_25, Oracle Corporation
    Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
    Memory: 1268192 bytes (1 MB) / 523501568 bytes (499 MB) up to 523501568 bytes (499 MB)
    JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
    IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
    FML: MCP 9.19 Powered by Forge 11.15.1.1722 Optifine OptiFine_1.8.9_HD_U_H5 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
    UCHI    mcp{9.19} [Minecraft Coder Pack] (minecraft.jar) 
    UCHI    FML{8.0.99.99} [Forge Mod Loader] (forge-1.8.9-11.15.1.1722.jar) 
    UCHI    Forge{11.15.1.1722} [Minecraft Forge] (forge-1.8.9-11.15.1.1722.jar) 
    UCHE    pixelmon{4.2.5} [Pixelmon] (픽셀몬4.2.5[번역-빨간광물].jar) 
    Loaded coremods (and transformers): 
Java8CheckerCoremod (픽셀몬4.2.5[번역-빨간광물].jar)
  
    GL info: ' Vendor: 'Intel' Version: '4.0.0 - Build 9.18.10.3186' Renderer: 'Intel(R) HD Graphics 4600'
    OptiFine Version: OptiFine_1.8.9_HD_U_H5
    Render Distance Chunks: 8
    Mipmaps: 4
    Anisotropic Filtering: 1
    Antialiasing: 0
    Multitexture: false
    Shaders: null
    OpenGlVersion: 4.0.0 - Build 9.18.10.3186
    OpenGlRenderer: Intel(R) HD Graphics 4600
    OpenGlVendor: Intel
    CpuCount: 4라고 나오는데 렉을 없에야 하는걸로 아는데 옵티파인 넣고해도 저래요.

이럴 때는 어떻게 해야되요?