Target program decision tree
Switch ({ var=AcRoot=t/86; dom=Int 0; }) =
	Leaf=VConstant:3
Switch ({ var=AcRoot=t/86; dom=Tag 0; }) =
	Switch ({ var=AcField(0 AcRoot=t/86); dom=Int [-inf; 0] [2; +inf] v Tag _; }) =
		Switch ({ var=AcField(0 AcRoot=t/86); dom=Int [-inf; 1] [3; +inf] v Tag _; }) =
			Leaf=VConstant:1, VConstant:0
		Switch ({ var=AcField(0 AcRoot=t/86); dom=Int 2; }) =
			Leaf=VConstant:1, VConstant:2
		Fallback=None
	Switch ({ var=AcField(0 AcRoot=t/86); dom=Int 1; }) =
		Leaf=VConstant:1, VConstant:1
	Fallback=None
Switch ({ var=AcRoot=t/86; dom=Tag 1; }) =
	Switch ({ var=AcField(0 AcRoot=t/86); dom=Int [-inf; -1] [1; +inf] v Tag _; }) =
		Leaf=VConstant:2, VConstant:1
	Switch ({ var=AcField(0 AcRoot=t/86); dom=Int 0; }) =
		Leaf=VConstant:2, VConstant:0
	Fallback=None
Fallback=None

Source program decision tree
Switch AcRoot:{
	Variant K2 -> 
		Switch AcRoot.0:{
		Bool false -> 
			Leaf='Int 2 Bool false '
		
		Bool true -> 
			Leaf='Int 2 Bool true ' 
	} Fallback: Unreachable
	
	Variant K1 -> 
		Switch AcRoot.0:{
		Int 2 -> 
			Leaf='Int 1 Int 2 '
		
		Int 1 -> 
			Leaf='Int 1 Int 1 ' 
	} Fallback: Leaf='Int 1 Unit '
	
	Variant K3 -> 
		Leaf='Int 3 ' 
} Fallback: Unreachable

The two programs are equivalent.