Cannot repair disk0s2 with mavericks utility disk on a SSD
If you have booted from other media and tried Apple's tools then the only thing(s) left are 3rd party tools.

My go-to is Diskwarrior and while some drives with a lot of files will cause it to fail (so I have heard) I've, personally, never had an issue with it. It has always worked and almost always fixed the problem.

Failing that TechTool pro and Prosoft Engineering are a couple of other places to look.