Android Studio: The emulator keeps crashing after sometime

It seems a buggy graphic card driver can cause a similar problem. I am not sure if this is generated your problem here or not, but it is worth to say; If you have an NVIDIA graphic card with the driver version of 378.49 (there may be other versions too!), you may experience this error due to some incompatibility with java.
Please update your graphic card driver or rollback it to version an older stable version and try again!. And read here for more information.