(0) Obligation:
Runtime Complexity TRS:
The TRS R consists of the following rules:
g(f(x, y), z) → f(x, g(y, z))
g(h(x, y), z) → g(x, f(y, z))
g(x, h(y, z)) → h(g(x, y), z)
Rewrite Strategy: FULL
(1) DecreasingLoopProof (EQUIVALENT transformation)
The following loop(s) give(s) rise to the lower bound Ω(n1):
The rewrite sequence
g(f(x, y), z) →+ f(x, g(y, z))
gives rise to a decreasing loop by considering the right hand sides subterm at position [1].
The pumping substitution is [y / f(x, y)].
The result substitution is [ ].
(2) BOUNDS(n^1, INF)
(3) RenamingProof (EQUIVALENT transformation)
Renamed function symbols to avoid clashes with predefined symbol.
(4) Obligation:
Runtime Complexity Relative TRS:
The TRS R consists of the following rules:
g(f(x, y), z) → f(x, g(y, z))
g(h(x, y), z) → g(x, f(y, z))
g(x, h(y, z)) → h(g(x, y), z)
S is empty.
Rewrite Strategy: FULL
(5) TypeInferenceProof (BOTH BOUNDS(ID, ID) transformation)
Infered types.
(6) Obligation:
TRS:
Rules:
g(f(x, y), z) → f(x, g(y, z))
g(h(x, y), z) → g(x, f(y, z))
g(x, h(y, z)) → h(g(x, y), z)
Types:
g :: f:h → f:h → f:h
f :: a → f:h → f:h
h :: f:h → a → f:h
hole_f:h1_0 :: f:h
hole_a2_0 :: a
gen_f:h3_0 :: Nat → f:h
(7) OrderProof (LOWER BOUND(ID) transformation)
Heuristically decided to analyse the following defined symbols:
g
(8) Obligation:
TRS:
Rules:
g(
f(
x,
y),
z) →
f(
x,
g(
y,
z))
g(
h(
x,
y),
z) →
g(
x,
f(
y,
z))
g(
x,
h(
y,
z)) →
h(
g(
x,
y),
z)
Types:
g :: f:h → f:h → f:h
f :: a → f:h → f:h
h :: f:h → a → f:h
hole_f:h1_0 :: f:h
hole_a2_0 :: a
gen_f:h3_0 :: Nat → f:h
Generator Equations:
gen_f:h3_0(0) ⇔ hole_f:h1_0
gen_f:h3_0(+(x, 1)) ⇔ f(hole_a2_0, gen_f:h3_0(x))
The following defined symbols remain to be analysed:
g
(9) NoRewriteLemmaProof (LOWER BOUND(ID) transformation)
Could not prove a rewrite lemma for the defined symbol g.
(10) Obligation:
TRS:
Rules:
g(
f(
x,
y),
z) →
f(
x,
g(
y,
z))
g(
h(
x,
y),
z) →
g(
x,
f(
y,
z))
g(
x,
h(
y,
z)) →
h(
g(
x,
y),
z)
Types:
g :: f:h → f:h → f:h
f :: a → f:h → f:h
h :: f:h → a → f:h
hole_f:h1_0 :: f:h
hole_a2_0 :: a
gen_f:h3_0 :: Nat → f:h
Generator Equations:
gen_f:h3_0(0) ⇔ hole_f:h1_0
gen_f:h3_0(+(x, 1)) ⇔ f(hole_a2_0, gen_f:h3_0(x))
No more defined symbols left to analyse.