(0) Obligation:
Runtime Complexity TRS:
The TRS R consists of the following rules:
h(z, e(x)) → h(c(z), d(z, x))
d(z, g(0, 0)) → e(0)
d(z, g(x, y)) → g(e(x), d(z, y))
d(c(z), g(g(x, y), 0)) → g(d(c(z), g(x, y)), d(z, g(x, y)))
g(e(x), e(y)) → e(g(x, y))
Rewrite Strategy: FULL
(1) DecreasingLoopProof (EQUIVALENT transformation)
The following loop(s) give(s) rise to the lower bound Ω(n1):
The rewrite sequence
g(e(x), e(y)) →+ e(g(x, y))
gives rise to a decreasing loop by considering the right hand sides subterm at position [0].
The pumping substitution is [x / e(x), y / e(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:
h(z, e(x)) → h(c(z), d(z, x))
d(z, g(0', 0')) → e(0')
d(z, g(x, y)) → g(e(x), d(z, y))
d(c(z), g(g(x, y), 0')) → g(d(c(z), g(x, y)), d(z, g(x, y)))
g(e(x), e(y)) → e(g(x, y))
S is empty.
Rewrite Strategy: FULL
(5) TypeInferenceProof (BOTH BOUNDS(ID, ID) transformation)
Infered types.
(6) Obligation:
TRS:
Rules:
h(z, e(x)) → h(c(z), d(z, x))
d(z, g(0', 0')) → e(0')
d(z, g(x, y)) → g(e(x), d(z, y))
d(c(z), g(g(x, y), 0')) → g(d(c(z), g(x, y)), d(z, g(x, y)))
g(e(x), e(y)) → e(g(x, y))
Types:
h :: c → e:0' → h
e :: e:0' → e:0'
c :: c → c
d :: c → e:0' → e:0'
g :: e:0' → e:0' → e:0'
0' :: e:0'
hole_h1_0 :: h
hole_c2_0 :: c
hole_e:0'3_0 :: e:0'
gen_c4_0 :: Nat → c
gen_e:0'5_0 :: Nat → e:0'
(7) OrderProof (LOWER BOUND(ID) transformation)
Heuristically decided to analyse the following defined symbols:
h,
d,
gThey will be analysed ascendingly in the following order:
d < h
g < d
(8) Obligation:
TRS:
Rules:
h(
z,
e(
x)) →
h(
c(
z),
d(
z,
x))
d(
z,
g(
0',
0')) →
e(
0')
d(
z,
g(
x,
y)) →
g(
e(
x),
d(
z,
y))
d(
c(
z),
g(
g(
x,
y),
0')) →
g(
d(
c(
z),
g(
x,
y)),
d(
z,
g(
x,
y)))
g(
e(
x),
e(
y)) →
e(
g(
x,
y))
Types:
h :: c → e:0' → h
e :: e:0' → e:0'
c :: c → c
d :: c → e:0' → e:0'
g :: e:0' → e:0' → e:0'
0' :: e:0'
hole_h1_0 :: h
hole_c2_0 :: c
hole_e:0'3_0 :: e:0'
gen_c4_0 :: Nat → c
gen_e:0'5_0 :: Nat → e:0'
Generator Equations:
gen_c4_0(0) ⇔ hole_c2_0
gen_c4_0(+(x, 1)) ⇔ c(gen_c4_0(x))
gen_e:0'5_0(0) ⇔ 0'
gen_e:0'5_0(+(x, 1)) ⇔ e(gen_e:0'5_0(x))
The following defined symbols remain to be analysed:
g, h, d
They will be analysed ascendingly in the following order:
d < h
g < d
(9) RewriteLemmaProof (LOWER BOUND(ID) transformation)
Proved the following rewrite lemma:
g(
gen_e:0'5_0(
+(
1,
n7_0)),
gen_e:0'5_0(
+(
1,
n7_0))) →
*6_0, rt ∈ Ω(n7
0)
Induction Base:
g(gen_e:0'5_0(+(1, 0)), gen_e:0'5_0(+(1, 0)))
Induction Step:
g(gen_e:0'5_0(+(1, +(n7_0, 1))), gen_e:0'5_0(+(1, +(n7_0, 1)))) →RΩ(1)
e(g(gen_e:0'5_0(+(1, n7_0)), gen_e:0'5_0(+(1, n7_0)))) →IH
e(*6_0)
We have rt ∈ Ω(n1) and sz ∈ O(n). Thus, we have ircR ∈ Ω(n).
(10) Complex Obligation (BEST)
(11) Obligation:
TRS:
Rules:
h(
z,
e(
x)) →
h(
c(
z),
d(
z,
x))
d(
z,
g(
0',
0')) →
e(
0')
d(
z,
g(
x,
y)) →
g(
e(
x),
d(
z,
y))
d(
c(
z),
g(
g(
x,
y),
0')) →
g(
d(
c(
z),
g(
x,
y)),
d(
z,
g(
x,
y)))
g(
e(
x),
e(
y)) →
e(
g(
x,
y))
Types:
h :: c → e:0' → h
e :: e:0' → e:0'
c :: c → c
d :: c → e:0' → e:0'
g :: e:0' → e:0' → e:0'
0' :: e:0'
hole_h1_0 :: h
hole_c2_0 :: c
hole_e:0'3_0 :: e:0'
gen_c4_0 :: Nat → c
gen_e:0'5_0 :: Nat → e:0'
Lemmas:
g(gen_e:0'5_0(+(1, n7_0)), gen_e:0'5_0(+(1, n7_0))) → *6_0, rt ∈ Ω(n70)
Generator Equations:
gen_c4_0(0) ⇔ hole_c2_0
gen_c4_0(+(x, 1)) ⇔ c(gen_c4_0(x))
gen_e:0'5_0(0) ⇔ 0'
gen_e:0'5_0(+(x, 1)) ⇔ e(gen_e:0'5_0(x))
The following defined symbols remain to be analysed:
d, h
They will be analysed ascendingly in the following order:
d < h
(12) NoRewriteLemmaProof (LOWER BOUND(ID) transformation)
Could not prove a rewrite lemma for the defined symbol d.
(13) Obligation:
TRS:
Rules:
h(
z,
e(
x)) →
h(
c(
z),
d(
z,
x))
d(
z,
g(
0',
0')) →
e(
0')
d(
z,
g(
x,
y)) →
g(
e(
x),
d(
z,
y))
d(
c(
z),
g(
g(
x,
y),
0')) →
g(
d(
c(
z),
g(
x,
y)),
d(
z,
g(
x,
y)))
g(
e(
x),
e(
y)) →
e(
g(
x,
y))
Types:
h :: c → e:0' → h
e :: e:0' → e:0'
c :: c → c
d :: c → e:0' → e:0'
g :: e:0' → e:0' → e:0'
0' :: e:0'
hole_h1_0 :: h
hole_c2_0 :: c
hole_e:0'3_0 :: e:0'
gen_c4_0 :: Nat → c
gen_e:0'5_0 :: Nat → e:0'
Lemmas:
g(gen_e:0'5_0(+(1, n7_0)), gen_e:0'5_0(+(1, n7_0))) → *6_0, rt ∈ Ω(n70)
Generator Equations:
gen_c4_0(0) ⇔ hole_c2_0
gen_c4_0(+(x, 1)) ⇔ c(gen_c4_0(x))
gen_e:0'5_0(0) ⇔ 0'
gen_e:0'5_0(+(x, 1)) ⇔ e(gen_e:0'5_0(x))
The following defined symbols remain to be analysed:
h
(14) NoRewriteLemmaProof (LOWER BOUND(ID) transformation)
Could not prove a rewrite lemma for the defined symbol h.
(15) Obligation:
TRS:
Rules:
h(
z,
e(
x)) →
h(
c(
z),
d(
z,
x))
d(
z,
g(
0',
0')) →
e(
0')
d(
z,
g(
x,
y)) →
g(
e(
x),
d(
z,
y))
d(
c(
z),
g(
g(
x,
y),
0')) →
g(
d(
c(
z),
g(
x,
y)),
d(
z,
g(
x,
y)))
g(
e(
x),
e(
y)) →
e(
g(
x,
y))
Types:
h :: c → e:0' → h
e :: e:0' → e:0'
c :: c → c
d :: c → e:0' → e:0'
g :: e:0' → e:0' → e:0'
0' :: e:0'
hole_h1_0 :: h
hole_c2_0 :: c
hole_e:0'3_0 :: e:0'
gen_c4_0 :: Nat → c
gen_e:0'5_0 :: Nat → e:0'
Lemmas:
g(gen_e:0'5_0(+(1, n7_0)), gen_e:0'5_0(+(1, n7_0))) → *6_0, rt ∈ Ω(n70)
Generator Equations:
gen_c4_0(0) ⇔ hole_c2_0
gen_c4_0(+(x, 1)) ⇔ c(gen_c4_0(x))
gen_e:0'5_0(0) ⇔ 0'
gen_e:0'5_0(+(x, 1)) ⇔ e(gen_e:0'5_0(x))
No more defined symbols left to analyse.
(16) LowerBoundsProof (EQUIVALENT transformation)
The lowerbound Ω(n1) was proven with the following lemma:
g(gen_e:0'5_0(+(1, n7_0)), gen_e:0'5_0(+(1, n7_0))) → *6_0, rt ∈ Ω(n70)
(17) BOUNDS(n^1, INF)
(18) Obligation:
TRS:
Rules:
h(
z,
e(
x)) →
h(
c(
z),
d(
z,
x))
d(
z,
g(
0',
0')) →
e(
0')
d(
z,
g(
x,
y)) →
g(
e(
x),
d(
z,
y))
d(
c(
z),
g(
g(
x,
y),
0')) →
g(
d(
c(
z),
g(
x,
y)),
d(
z,
g(
x,
y)))
g(
e(
x),
e(
y)) →
e(
g(
x,
y))
Types:
h :: c → e:0' → h
e :: e:0' → e:0'
c :: c → c
d :: c → e:0' → e:0'
g :: e:0' → e:0' → e:0'
0' :: e:0'
hole_h1_0 :: h
hole_c2_0 :: c
hole_e:0'3_0 :: e:0'
gen_c4_0 :: Nat → c
gen_e:0'5_0 :: Nat → e:0'
Lemmas:
g(gen_e:0'5_0(+(1, n7_0)), gen_e:0'5_0(+(1, n7_0))) → *6_0, rt ∈ Ω(n70)
Generator Equations:
gen_c4_0(0) ⇔ hole_c2_0
gen_c4_0(+(x, 1)) ⇔ c(gen_c4_0(x))
gen_e:0'5_0(0) ⇔ 0'
gen_e:0'5_0(+(x, 1)) ⇔ e(gen_e:0'5_0(x))
No more defined symbols left to analyse.
(19) LowerBoundsProof (EQUIVALENT transformation)
The lowerbound Ω(n1) was proven with the following lemma:
g(gen_e:0'5_0(+(1, n7_0)), gen_e:0'5_0(+(1, n7_0))) → *6_0, rt ∈ Ω(n70)
(20) BOUNDS(n^1, INF)