After cache clear attempting system restart...MACH Reboot

The point in the boot up process where the Apple logo first appears is when the BootX booter is running to then load the macOS kernel environment including any number of kernel extensions. Shortly afterwards, you would normally see the Progress Bar.

Somehow, Cocktail "trashed" your system as I have only seen this type of error with Hackintosh devices, not Macs.

At this point, you may need to re-install macOS.

However, you may want to try the following, in order. Stop at any step where the issue is resolved:

1. Reset your Mac's SMC.
   • What: Reset the System Management Controller (SMC) on your Mac- Apple Support
   • How: Hold down the <shift><control><option> keys, and then, press the power button. Hold all of them for, at least, 10 seconds.
   • Why: Resets fans, keyboard backlight, status indicator, battery indicator, display backlight, power button, close/open the lid, sleep or shut down, battery doesn't charge, MagSafe indicator light incorrect status.
2. Boot up your Mac in Safe Mode.
   • What: Use safe mode to isolate issues with your Mac- Apple Support
   • How: At boot-up, hold down the <shift> key until the Apple logo appears on the screen.
3. Boot up your Mac in Recovery or Internet Recovery Mode.
   • What: About macOS Recovery- Apple Support
   • How:

     For Recovery Mode: Immediately after pressing the power button, hold down the <command><R> keys until the Apple logo appears on the screen.

     For Internet Recovery Mode: Immediately after pressing the power button, hold down the <option><command><R> keys until the spinning globe appears on the screen.

     When at the initial Recovery Mode screen, select the Disk Utility option. Run Disk Utility > First Aid to verify the startup disk's integrity.

   • Why: To verify the startup disk integrity using the Disk Utility's First Aid option.
4. Boot up your Mac in Recovery or Internet Recovery Mode.
   • What: How to reinstall macOS from macOS Recovery - Apple Support
   • How:

     For Recovery Mode: Immediately after pressing the power button, hold down the <command><R> keys until the Apple logo appears on the screen.

     For Internet Recovery Mode: Immediately after pressing the power button, hold down the <option><command><R> keys until the spinning globe appears on the screen.

     When at the initial Recovery Mode screen, select the Reinstall macOS option.

   • Why: To re-install OS X or macOS.

You're very welcome! I'm glad you got it worked out ...