iOS Simulator (11.1) that comes with Xcode 11.1 GM Seed seems to be unable to boot iOS 13.1 devices

I had the same issue. Disabling AVX/AVX2 solved for me.

VBoxManage setextradata "$vm_name" VBoxInternal/CPUM/IsaExts/AVX 0
VBoxManage setextradata "$vm_name" VBoxInternal/CPUM/IsaExts/AVX2 0

yeah, this solution works.

Open cmd

1. cd "C:\Program Files\Oracle\VirtualBox\"
2. VBoxManage setextradata "$vm_name" VBoxInternal/CPUM/IsaExts/AVX 0
3. VBoxManage setextradata "$vm_name" VBoxInternal/CPUM/IsaExts/AVX2 0