YES Termination proof of AG_#3.7_rand.trs

(0) Obligation:

Relative term rewrite system:
The relative TRS consists of the following R rules:

half(0) → 0
half(s(s(x))) → s(half(x))
log(s(0)) → 0
log(s(s(x))) → s(log(s(half(x))))

The relative TRS consists of the following S rules:

rand(x) → rand(s(x))
rand(x) → x

(1) RelTRSRRRProof (EQUIVALENT transformation)

We used the following monotonic ordering for rule removal:
Polynomial interpretation [POLO]:

POL(0) = 0   
POL(half(x1)) = x1   
POL(log(x1)) = 1 + x1   
POL(rand(x1)) = 1 + x1   
POL(s(x1)) = x1   
With this ordering the following rules can be removed [MATRO] because they are oriented strictly:
Rules from R:

log(s(0)) → 0
Rules from S:

rand(x) → x


(2) Obligation:

Relative term rewrite system:
The relative TRS consists of the following R rules:

half(0) → 0
half(s(s(x))) → s(half(x))
log(s(s(x))) → s(log(s(half(x))))

The relative TRS consists of the following S rules:

rand(x) → rand(s(x))

(3) RelTRSRRRProof (EQUIVALENT transformation)

We used the following monotonic ordering for rule removal:
Matrix interpretation [MATRO] to (N^2, +, *, >=, >) :

POL(half(x1)) =
/0\
\0/
+
/10\
\01/
·x1

POL(0) =
/0\
\0/

POL(s(x1)) =
/0\
\1/
+
/10\
\01/
·x1

POL(log(x1)) =
/2\
\1/
+
/22\
\01/
·x1

POL(rand(x1)) =
/1\
\2/
+
/20\
\00/
·x1
With this ordering the following rules can be removed [MATRO] because they are oriented strictly:
Rules from R:

log(s(s(x))) → s(log(s(half(x))))
Rules from S:
none


(4) Obligation:

Relative term rewrite system:
The relative TRS consists of the following R rules:

half(0) → 0
half(s(s(x))) → s(half(x))

The relative TRS consists of the following S rules:

rand(x) → rand(s(x))

(5) RelTRSRRRProof (EQUIVALENT transformation)

We used the following monotonic ordering for rule removal:
Polynomial interpretation [POLO]:

POL(0) = 0   
POL(half(x1)) = 1 + x1   
POL(rand(x1)) = x1   
POL(s(x1)) = x1   
With this ordering the following rules can be removed [MATRO] because they are oriented strictly:
Rules from R:

half(0) → 0
Rules from S:
none


(6) Obligation:

Relative term rewrite system:
The relative TRS consists of the following R rules:

half(s(s(x))) → s(half(x))

The relative TRS consists of the following S rules:

rand(x) → rand(s(x))

(7) RelTRSRRRProof (EQUIVALENT transformation)

We used the following monotonic ordering for rule removal:
Matrix interpretation [MATRO] to (N^2, +, *, >=, >) :

POL(half(x1)) =
/1\
\2/
+
/11\
\02/
·x1

POL(s(x1)) =
/0\
\2/
+
/10\
\22/
·x1

POL(rand(x1)) =
/0\
\2/
+
/10\
\00/
·x1
With this ordering the following rules can be removed [MATRO] because they are oriented strictly:
Rules from R:

half(s(s(x))) → s(half(x))
Rules from S:
none


(8) Obligation:

Relative term rewrite system:
R is empty.
The relative TRS consists of the following S rules:

rand(x) → rand(s(x))

(9) RIsEmptyProof (EQUIVALENT transformation)

The TRS R is empty. Hence, termination is trivially proven.

(10) YES