The Runtime Complexity (innermost) of the given CpxTRS could be proven to be BOUNDS(1, n^1).

(0) Obligation:

The Runtime Complexity (innermost) of the given CpxTRS could be proven to be BOUNDS(1, n^1).


The TRS R consists of the following rules:

h(e(x), y) → h(d(x, y), s(y))
d(g(g(0, x), y), s(z)) → g(e(x), d(g(g(0, x), y), z))
d(g(g(0, x), y), 0) → e(y)
d(g(0, x), y) → e(x)
d(g(x, y), z) → g(d(x, z), e(y))
g(e(x), e(y)) → e(g(x, y))

Rewrite Strategy: INNERMOST

(1) NestedDefinedSymbolProof (BOTH BOUNDS(ID, ID) transformation)

The following defined symbols can occur below the 0th argument of h: d
The following defined symbols can occur below the 0th argument of d: d

Hence, the left-hand sides of the following rules are not basic-reachable and can be removed:
d(g(g(0, x), y), s(z)) → g(e(x), d(g(g(0, x), y), z))
d(g(g(0, x), y), 0) → e(y)
d(g(0, x), y) → e(x)
d(g(x, y), z) → g(d(x, z), e(y))

(2) Obligation:

The Runtime Complexity (innermost) of the given CpxTRS could be proven to be BOUNDS(1, n^1).


The TRS R consists of the following rules:

h(e(x), y) → h(d(x, y), s(y))
g(e(x), e(y)) → e(g(x, y))

Rewrite Strategy: INNERMOST

(3) CpxTrsToCdtProof (BOTH BOUNDS(ID, ID) transformation)

Converted Cpx (relative) TRS to CDT

(4) Obligation:

Complexity Dependency Tuples Problem
Rules:

h(e(z0), z1) → h(d(z0, z1), s(z1))
g(e(z0), e(z1)) → e(g(z0, z1))

Tuples:

H(e(z0), z1) → c(H(d(z0, z1), s(z1)))
G(e(z0), e(z1)) → c1(G(z0, z1))

S tuples:

H(e(z0), z1) → c(H(d(z0, z1), s(z1)))
G(e(z0), e(z1)) → c1(G(z0, z1))

K tuples:none
Defined Rule Symbols:

h, g

Defined Pair Symbols:

H, G

Compound Symbols:

c, c1

(5) CdtLeafRemovalProof (BOTH BOUNDS(ID, ID) transformation)

Removed 1 trailing nodes:

H(e(z0), z1) → c(H(d(z0, z1), s(z1)))

(6) Obligation:

Complexity Dependency Tuples Problem
Rules:

h(e(z0), z1) → h(d(z0, z1), s(z1))
g(e(z0), e(z1)) → e(g(z0, z1))

Tuples:

G(e(z0), e(z1)) → c1(G(z0, z1))

S tuples:

G(e(z0), e(z1)) → c1(G(z0, z1))

K tuples:none
Defined Rule Symbols:

h, g

Defined Pair Symbols:

G

Compound Symbols:

c1

(7) CdtUsableRulesProof (EQUIVALENT transformation)

The following rules are not usable and were removed:

h(e(z0), z1) → h(d(z0, z1), s(z1))
g(e(z0), e(z1)) → e(g(z0, z1))

(8) Obligation:

Complexity Dependency Tuples Problem
Rules:none
Tuples:

G(e(z0), e(z1)) → c1(G(z0, z1))

S tuples:

G(e(z0), e(z1)) → c1(G(z0, z1))

K tuples:none
Defined Rule Symbols:none

Defined Pair Symbols:

G

Compound Symbols:

c1

(9) CdtRuleRemovalProof (UPPER BOUND(ADD(n^1)) transformation)

Found a reduction pair which oriented the following tuples strictly. Hence they can be removed from S.

G(e(z0), e(z1)) → c1(G(z0, z1))

We considered the (Usable) Rules:none
And the Tuples:

G(e(z0), e(z1)) → c1(G(z0, z1))

The order we found is given by the following interpretation:
Polynomial interpretation :

POL(G(x₁, x₂)) = x₂   
POL(c1(x₁)) = x₁   
POL(e(x₁)) = [1] + x₁   

(10) Obligation:

Complexity Dependency Tuples Problem
Rules:none
Tuples:

G(e(z0), e(z1)) → c1(G(z0, z1))

S tuples:none
K tuples:

G(e(z0), e(z1)) → c1(G(z0, z1))

Defined Rule Symbols:none

Defined Pair Symbols:

G

Compound Symbols:

c1

(11) SIsEmptyProof (BOTH BOUNDS(ID, ID) transformation)

The set S is empty

(12) BOUNDS(1, 1)