(0) Obligation:
Q restricted rewrite system:
The TRS R consists of the following rules:
if(if(x, y, z), u, v) → if(x, if(y, u, v), if(z, u, v))
Q is empty.
(1) QTRSRRRProof (EQUIVALENT transformation)
Used ordering:
Lexicographic path order with status [LPO].
Precedence:
trivial
Status:
if3: [1,2,3]
With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly:
if(if(x, y, z), u, v) → if(x, if(y, u, v), if(z, u, v))
(2) Obligation:
Q restricted rewrite system:
R is empty.
Q is empty.
(3) RisEmptyProof (EQUIVALENT transformation)
The TRS R is empty. Hence, termination is trivially proven.
(4) TRUE