/home/nowonder/forschung/aprove/TPDB05/TRS/nontermin/AG01/#4.27.trs

The program

(from AG01 4.27)
(VAR x y)
(RULES
p(0) -> 0
p(s(x)) -> x
le(0,y) -> true
le(s(x),0) -> false
le(s(x),s(y)) -> le(x,y)
minus(x,0) -> x
minus(x,s(y)) -> if(le(x,s(y)),0,p(minus(x,p(s(y)))))
if(true,x,y) -> x
if(false,x,y) -> y
)

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