```* Step 1: WeightGap WORST_CASE(?,O(n^2))
+ Considered Problem:
- Strict TRS:
activate(X) -> X
and(tt(),X) -> activate(X)
plus(N,0()) -> N
plus(N,s(M)) -> s(plus(N,M))
x(N,0()) -> 0()
x(N,s(M)) -> plus(x(N,M),N)
- Signature:
{activate/1,and/2,plus/2,x/2} / {0/0,s/1,tt/0}
- Obligation:
innermost runtime complexity wrt. defined symbols {activate,and,plus,x} and constructors {0,s,tt}
+ Applied Processor:
WeightGap {wgDimension = 1, wgDegree = 1, wgKind = Algebraic, wgUArgs = UArgs, wgOn = WgOnAny}
+ Details:
The weightgap principle applies using the following nonconstant growth matrix-interpretation:
We apply a matrix interpretation of kind constructor based matrix interpretation:
The following argument positions are considered usable:
uargs(plus) = {1},
uargs(s) = {1}

Following symbols are considered usable:
all
TcT has computed the following interpretation:
p(0) = 
p(activate) =  x1 + 
p(and) =  x1 +  x2 + 
p(plus) =  x1 + 
p(s) =  x1 + 
p(tt) = 
p(x) =  x1 +  x2 + 

Following rules are strictly oriented:
activate(X) =  X + 
>  X + 
= X

and(tt(),X) =  X + 
>  X + 
= activate(X)

plus(N,0()) =  N + 
>  N + 
= N

x(N,0()) =  N + 
> 
= 0()

x(N,s(M)) =  M +  N + 
>  M +  N + 
= plus(x(N,M),N)

Following rules are (at-least) weakly oriented:
plus(N,s(M)) =   N + 
>=  N + 
=  s(plus(N,M))

Further, it can be verified that all rules not oriented are covered by the weightgap condition.
* Step 2: NaturalPI WORST_CASE(?,O(n^2))
+ Considered Problem:
- Strict TRS:
plus(N,s(M)) -> s(plus(N,M))
- Weak TRS:
activate(X) -> X
and(tt(),X) -> activate(X)
plus(N,0()) -> N
x(N,0()) -> 0()
x(N,s(M)) -> plus(x(N,M),N)
- Signature:
{activate/1,and/2,plus/2,x/2} / {0/0,s/1,tt/0}
- Obligation:
innermost runtime complexity wrt. defined symbols {activate,and,plus,x} and constructors {0,s,tt}
+ Applied Processor:
NaturalPI {shape = Mixed 2, restrict = Restrict, uargs = UArgs, urules = URules, selector = Just any strict-rules}
+ Details:
We apply a polynomial interpretation of kind constructor-based(mixed(2)):
The following argument positions are considered usable:
uargs(plus) = {1},
uargs(s) = {1}

Following symbols are considered usable:
{activate,and,plus,x}
TcT has computed the following interpretation:
p(0) = 0
p(activate) = 4*x1
p(and) = x1 + x1*x2 + x1^2 + 4*x2 + x2^2
p(plus) = x1 + 2*x2
p(s) = 1 + x1
p(tt) = 0
p(x) = 2*x1*x2

Following rules are strictly oriented:
plus(N,s(M)) = 2 + 2*M + N
> 1 + 2*M + N
= s(plus(N,M))

Following rules are (at-least) weakly oriented:
activate(X) =  4*X
>= X
=  X

and(tt(),X) =  4*X + X^2
>= 4*X
=  activate(X)

plus(N,0()) =  N
>= N
=  N

x(N,0()) =  0
>= 0
=  0()

x(N,s(M)) =  2*M*N + 2*N
>= 2*M*N + 2*N
=  plus(x(N,M),N)

* Step 3: EmptyProcessor WORST_CASE(?,O(1))
+ Considered Problem:
- Weak TRS:
activate(X) -> X
and(tt(),X) -> activate(X)
plus(N,0()) -> N
plus(N,s(M)) -> s(plus(N,M))
x(N,0()) -> 0()
x(N,s(M)) -> plus(x(N,M),N)
- Signature:
{activate/1,and/2,plus/2,x/2} / {0/0,s/1,tt/0}
- Obligation:
innermost runtime complexity wrt. defined symbols {activate,and,plus,x} and constructors {0,s,tt}
+ Applied Processor:
EmptyProcessor
+ Details:
The problem is already closed. The intended complexity is O(1).

WORST_CASE(?,O(n^2))
```