The log should explain what's going on
Completely ignored arguments: [--nativeLauncherVersion, 301]
[17:38:46] [Client thread/INFO]: Setting user: ThePopcornNoob
[17:38:47] [Client thread/INFO]: LWJGL Version: 2.9.4
[17:38:47] [Client thread/INFO]: Reloading ResourceManager: Default
[17:38:48] [Client thread/WARN]: Missing sound for event: minecraft:block.enchantment_table.use
[17:38:48] [Client thread/WARN]: Missing sound for event: minecraft:entity.polar_bear.ambient
[17:38:48] [Client thread/WARN]: Missing sound for event: minecraft:entity.polar_bear.baby_ambient
[17:38:48] [Client thread/WARN]: Missing sound for event: minecraft:entity.polar_bear.death
[17:38:48] [Client thread/WARN]: Missing sound for event: minecraft:entity.polar_bear.hurt
[17:38:48] [Client thread/WARN]: Missing sound for event: minecraft:entity.polar_bear.step
[17:38:48] [Client thread/WARN]: Missing sound for event: minecraft:entity.polar_bear.warning
[17:38:48] [Sound Library Loader/INFO]: Starting up SoundSystem...
[17:38:48] [Thread-5/INFO]: Initializing LWJGL OpenAL
[17:38:48] [Thread-5/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
[17:38:48] [Thread-5/INFO]: OpenAL initialized.
[17:38:48] [Sound Library Loader/INFO]: Sound engine started
[17:38:49] [Client thread/INFO]: Created: 1024x512 textures-atlas
[17:39:03] [Client thread/ERROR]: Can't ping eu.mineplex.com: Disconnected
[17:39:03] [Client thread/ERROR]: Can't ping play.MCPZ.net: Disconnected
[17:39:20] [Server thread/INFO]: Starting integrated minecraft server version 16w20a
[17:39:20] [Server thread/INFO]: Generating keypair
[17:39:21] [Server thread/WARN]: Unable to find spawn biome
[17:39:22] [Server thread/INFO]: Preparing start region for level 0
[17:39:23] [Server thread/INFO]: Preparing spawn area: 73%
[17:39:24] [Server thread/INFO]: Changing view distance to 20, from 10
[17:39:24] [Server thread/INFO]: ThePopcornNoob[local:E:d9fdb5e3] logged in with entity id 0 at (-303.5, 64.0, -750.5)
[17:39:24] [Server thread/INFO]: ThePopcornNoob joined the game
[17:39:25] [Server thread/INFO]: Saving and pausing game...
[17:39:25] [Server thread/INFO]: Saving chunks for level 'New World'/Overworld
[17:39:26] [Server thread/INFO]: Saving chunks for level 'New World'/Nether
[17:39:26] [Server thread/INFO]: Saving chunks for level 'New World'/The End
[17:39:27] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2428ms behind, skipping 48 tick(s)
#

1. A fatal error has been detected by the Java Runtime Environment:
   #
2. EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x00007fff21232177, pid=6000, tid=8996
   #
3. JRE version: Java(TM) SE Runtime Environment (8.0_25-b18) (build 1.8.0_25-b18)
4. Java VM: Java HotSpot(TM) 64-Bit Server VM (25.25-b02 mixed mode windows-amd64 compressed oops)
5. Problematic frame:
6. C [ig75icd64.dll+0x12177]
   #
7. Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
   #
8. An error report file with more information is saved as:
9. C:\Users\Segev\AppData\Roaming\.minecraft\hs_err_pid6000.log
   #
10. If you would like to submit a bug report, please visit:
11. http://bugreport.sun.com/bugreport/crash.jsp
12. The crash happened outside the Java Virtual Machine in native code.
13. See problematic frame for where to report the bug.
    #
    AL lib: (EE) alc_cleanup: 1 device not closed
    Java HotSpot(TM) 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release