We consider the following Problem:
Strict Trs:
{ h(c(x, y), c(s(z), z), t(w)) ->
h(z, c(y, x), t(t(c(x, c(y, t(w))))))
, h(x, c(y, z), t(w)) -> h(c(s(y), x), z, t(c(t(w), w)))
, h(c(s(x), c(s(0()), y)), z, t(x)) ->
h(y, c(s(0()), c(x, z)), t(t(c(x, s(x)))))
, t(t(x)) -> t(c(t(x), x))
, t(x) -> x
, t(x) -> c(0(), c(0(), c(0(), c(0(), c(0(), x)))))}
StartTerms: basic terms
Strategy: innermost
Certificate: YES(?,O(n^1))
Proof:
Arguments of following rules are not normal-forms:
{ h(c(x, y), c(s(z), z), t(w)) ->
h(z, c(y, x), t(t(c(x, c(y, t(w))))))
, h(x, c(y, z), t(w)) -> h(c(s(y), x), z, t(c(t(w), w)))
, h(c(s(x), c(s(0()), y)), z, t(x)) ->
h(y, c(s(0()), c(x, z)), t(t(c(x, s(x)))))
, t(t(x)) -> t(c(t(x), x))}
All above mentioned rules can be savely removed.
We consider the following Problem:
Strict Trs:
{ t(x) -> x
, t(x) -> c(0(), c(0(), c(0(), c(0(), c(0(), x)))))}
StartTerms: basic terms
Strategy: innermost
Certificate: YES(?,O(n^1))
Proof:
The weightgap principle applies, where following rules are oriented strictly:
TRS Component: {t(x) -> c(0(), c(0(), c(0(), c(0(), c(0(), x)))))}
Interpretation of nonconstant growth:
-------------------------------------
The following argument positions are usable:
Uargs(h) = {}, Uargs(c) = {}, Uargs(s) = {}, Uargs(t) = {}
We have the following EDA-non-satisfying and IDA(1)-non-satisfying matrix interpretation:
Interpretation Functions:
h(x1, x2, x3) = [0 0] x1 + [0 0] x2 + [0 0] x3 + [0]
[0 0] [0 0] [0 0] [0]
c(x1, x2) = [0 0] x1 + [0 2] x2 + [1]
[0 0] [0 0] [0]
s(x1) = [0 0] x1 + [0]
[0 0] [0]
t(x1) = [1 0] x1 + [2]
[0 0] [0]
0() = [0]
[0]
The strictly oriented rules are moved into the weak component.
We consider the following Problem:
Strict Trs: {t(x) -> x}
Weak Trs: {t(x) -> c(0(), c(0(), c(0(), c(0(), c(0(), x)))))}
StartTerms: basic terms
Strategy: innermost
Certificate: YES(?,O(n^1))
Proof:
The weightgap principle applies, where following rules are oriented strictly:
TRS Component: {t(x) -> x}
Interpretation of nonconstant growth:
-------------------------------------
The following argument positions are usable:
Uargs(h) = {}, Uargs(c) = {}, Uargs(s) = {}, Uargs(t) = {}
We have the following EDA-non-satisfying and IDA(1)-non-satisfying matrix interpretation:
Interpretation Functions:
h(x1, x2, x3) = [1 0] x1 + [0 0] x2 + [0 0] x3 + [0]
[0 1] [0 0] [0 0] [0]
c(x1, x2) = [0 0] x1 + [0 2] x2 + [1]
[0 0] [0 0] [0]
s(x1) = [0 0] x1 + [0]
[0 0] [0]
t(x1) = [1 0] x1 + [2]
[0 1] [0]
0() = [0]
[0]
The strictly oriented rules are moved into the weak component.
We consider the following Problem:
Weak Trs:
{ t(x) -> x
, t(x) -> c(0(), c(0(), c(0(), c(0(), c(0(), x)))))}
StartTerms: basic terms
Strategy: innermost
Certificate: YES(O(1),O(1))
Proof:
We consider the following Problem:
Weak Trs:
{ t(x) -> x
, t(x) -> c(0(), c(0(), c(0(), c(0(), c(0(), x)))))}
StartTerms: basic terms
Strategy: innermost
Certificate: YES(O(1),O(1))
Proof:
Empty rules are trivially bounded
Hurray, we answered YES(?,O(n^1))