Lost partitions after a botched Windows install attempt via Bootcamp
I don't know what exactly happened, usually it works.

To get back to your original disk layout, just format the unallocated space with the Window installer (FAT32 or NTFS), boot to OS X and open Bootcamp Assistant.
Skip building an installation medium or downloading any drivers, just remove the Windows Partition.

If that doesn't work give me a comment. There are several solutions to restore the original disk layout.

Item List:  

Actually you have a Fusion Drive.

To build a Fusion Drive several physical disks are combined to a CoreStorage Logical Volume Group.


Disk0 is your physical SSD
Disk1 is your physical HDD
Disk2 is your logical Macintosh HD volume (CoreStorage Logical Volume) which resides in a Logical Volume Group spanning over disk0s2 and disk1s2. Disk2 is no real physical disk like disk0 and disk1 but in the Disk Utiliy context an own "logical" one.
Disk3 is your thumb drive containing the Windows 8 installation environment.