Certification Problem

Input (TPDB SRS_Standard/ICFP_2010/41378)

The rewrite relation of the following TRS is considered.

Property / Task

Prove or disprove termination.

Answer / Result

Yes.

Proof (by matchbox @ termCOMP 2023)

1 Closure Under Flat Contexts

Using the flat contexts

{5(☐), 4(☐), 3(☐), 2(☐), 1(☐), 0(☐)}

We obtain the transformed TRS

1.1 Semantic Labeling

The following interpretations form a model of the rules.

As carrier we take the set {0,...,5}. Symbols are labeled by the interpretation of their arguments using the interpretations (modulo 6):

[5(x₁)]	=	6x₁ + 0
[4(x₁)]	=	6x₁ + 1
[3(x₁)]	=	6x₁ + 2
[2(x₁)]	=	6x₁ + 3
[1(x₁)]	=	6x₁ + 4
[0(x₁)]	=	6x₁ + 5

We obtain the labeled TRS

There are 576 ruless (increase limit for explicit display).

1.1.1 Rule Removal

Using the matrix interpretations of dimension 1 with strict dimension 1 over the rationals with delta = 1

[5₀(x₁)]

x₁ +

[5₁(x₁)]

x₁ +

[5₂(x₁)]

x₁ +

[5₃(x₁)]

x₁ +

[5₄(x₁)]

x₁ +

[5₅(x₁)]

x₁ +

[4₀(x₁)]

x₁ +

[4₁(x₁)]

x₁ +

[4₂(x₁)]

x₁ +

[4₃(x₁)]

x₁ +

[4₄(x₁)]

x₁ +

[4₅(x₁)]

x₁ +

[3₀(x₁)]

x₁ +

[3₁(x₁)]

x₁ +

[3₂(x₁)]

x₁ +

[3₃(x₁)]

x₁ +

[3₄(x₁)]

x₁ +

[3₅(x₁)]

x₁ +

[2₀(x₁)]

x₁ +

[2₁(x₁)]

x₁ +

[2₂(x₁)]

x₁ +

[2₃(x₁)]

x₁ +

[2₄(x₁)]

x₁ +

[2₅(x₁)]

x₁ +

[1₀(x₁)]

x₁ +

[1₁(x₁)]

x₁ +

[1₂(x₁)]

x₁ +

[1₃(x₁)]

x₁ +

[1₄(x₁)]

x₁ +

[1₅(x₁)]

x₁ +

[0₀(x₁)]

x₁ +

[0₁(x₁)]

x₁ +

[0₂(x₁)]

x₁ +

[0₃(x₁)]

x₁ +

[0₄(x₁)]

x₁ +

[0₅(x₁)]

x₁ +

all of the following rules can be deleted.

There are 576 ruless (increase limit for explicit display).

1.1.1.1 R is empty

There are no rules in the TRS. Hence, it is terminating.

0(0(1(1(0(0(2(0(0(1(1(1(3(3(1(2(2(4(5(3(2(1(4(1(0(5(0(4(5(4(4(3(4(4(1(0(5(5(2(5(3(5(2(4(3(0(0(2(2(4(1(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	→	5(1(0(0(2(5(2(1(4(5(5(2(3(3(1(1(3(2(1(4(1(3(0(3(2(5(0(4(3(2(2(3(4(2(1(5(2(4(4(5(2(2(1(0(2(1(2(2(1(0(0(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	(1)
0(0(3(3(1(1(5(1(0(3(0(1(4(0(3(2(0(3(1(3(4(4(2(4(5(3(5(0(2(1(0(1(3(5(0(5(2(3(4(4(3(4(1(3(5(4(4(5(5(0(2(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	→	3(2(1(5(0(4(2(3(3(1(2(4(4(3(1(5(4(2(4(4(3(5(1(0(1(1(1(2(1(3(0(2(5(0(4(5(1(0(0(2(2(0(2(4(3(1(0(5(2(2(2(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	(2)
0(3(3(4(0(0(0(1(2(4(3(0(1(3(2(3(1(0(4(4(3(4(5(0(1(3(2(1(5(3(1(5(5(2(0(5(1(0(4(5(3(3(0(5(1(5(5(0(4(2(1(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	→	3(3(5(4(1(2(5(3(3(3(4(5(3(0(1(0(4(3(4(5(4(5(5(4(1(2(1(1(2(1(4(4(0(3(5(2(3(1(1(3(3(1(3(1(4(1(4(1(5(5(3(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	(3)
0(4(2(5(3(2(4(2(4(3(3(2(3(2(2(0(1(4(5(4(1(4(3(2(5(0(4(1(4(3(4(3(5(0(2(3(0(1(1(0(5(2(3(0(4(4(1(2(1(0(5(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	→	1(3(1(1(4(5(3(5(4(2(0(2(0(1(5(4(0(5(1(4(1(3(1(4(2(5(0(4(2(0(1(2(2(3(5(4(1(1(2(1(4(1(1(2(1(0(4(1(4(2(3(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	(4)
1(2(5(1(0(4(5(4(2(0(3(0(3(0(0(3(3(1(2(0(1(4(3(0(1(1(0(0(4(0(0(3(0(0(4(0(3(0(0(0(0(5(0(3(5(4(2(3(0(1(0(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	→	5(1(2(4(2(2(2(2(1(1(2(4(5(0(4(3(0(0(3(2(0(4(5(0(3(1(5(3(2(1(5(5(1(5(1(2(0(5(0(0(5(5(4(4(1(1(3(3(5(0(2(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	(5)
1(3(4(5(0(0(3(5(2(4(4(0(4(4(0(4(5(5(5(3(2(2(0(2(0(1(3(0(5(4(5(5(4(0(1(5(5(3(2(1(5(4(0(3(3(2(0(3(5(5(4(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	→	2(1(0(5(2(2(2(1(0(2(3(3(4(2(5(2(0(2(3(2(4(5(1(3(1(3(3(5(0(4(5(4(4(5(3(2(4(1(4(0(4(5(4(2(0(4(2(1(3(5(5(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	(6)
1(5(0(0(4(0(2(0(5(4(3(5(0(4(2(3(3(1(1(0(5(5(4(5(0(1(1(5(5(0(5(5(2(2(1(1(1(5(1(2(3(4(3(4(1(3(3(0(0(2(5(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	→	4(3(1(0(3(1(5(3(2(1(1(4(3(0(1(3(0(3(2(1(2(3(0(2(2(0(0(2(0(2(2(0(2(0(3(5(5(4(0(2(1(1(5(3(2(1(3(2(1(1(1(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	(7)
2(2(0(4(4(2(3(2(3(5(0(4(5(2(2(2(3(2(3(0(4(5(0(0(5(4(3(2(0(5(2(1(0(5(2(4(4(3(5(4(5(0(5(5(5(5(4(0(0(3(2(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	→	2(2(3(5(3(4(5(1(4(1(2(5(1(1(2(3(1(3(2(3(1(1(5(5(3(4(5(1(5(1(1(3(1(5(3(5(2(1(4(1(3(1(0(4(0(1(4(1(0(3(5(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	(8)
2(3(1(0(3(4(1(5(1(5(0(1(4(5(5(3(3(4(3(2(5(2(0(2(0(1(5(2(2(3(5(0(1(5(0(0(2(4(1(0(2(5(0(3(4(2(3(5(4(3(3(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	→	1(2(3(4(4(0(3(5(3(2(4(3(2(2(5(1(0(2(2(1(3(2(2(4(2(1(0(5(5(1(1(4(4(2(5(5(1(1(3(2(1(4(2(3(0(5(0(1(1(1(1(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	(9)
3(1(1(1(5(2(0(3(5(3(3(5(3(2(4(2(2(0(0(2(2(3(1(5(0(2(3(4(5(2(3(3(2(5(4(1(5(5(4(2(0(4(1(3(4(0(4(5(4(4(3(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	→	1(1(3(4(5(2(1(2(0(3(1(1(5(3(4(0(1(3(1(3(2(4(0(2(5(0(3(5(0(4(4(4(1(1(2(4(5(1(3(0(3(1(4(0(1(3(0(3(2(2(1(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	(10)
3(1(5(1(5(2(0(3(0(0(3(1(0(4(5(0(0(3(2(5(2(2(1(4(0(5(1(0(4(0(1(4(0(2(0(4(2(5(3(3(2(0(3(4(5(1(1(2(0(0(1(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	→	4(3(4(5(5(4(2(2(1(2(1(5(1(1(5(2(3(0(4(1(5(5(2(1(2(1(3(5(1(0(3(2(5(1(3(0(2(3(2(1(0(5(5(4(0(1(3(2(1(5(3(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	(11)
3(4(4(2(1(3(2(3(3(1(2(3(2(3(4(1(4(5(5(5(0(4(5(4(2(1(0(5(1(0(1(5(5(5(3(3(5(4(0(4(3(4(4(5(2(4(0(5(5(1(1(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	→	0(1(5(0(0(4(2(3(1(1(0(0(4(1(5(2(0(2(1(1(2(3(1(2(3(1(0(3(3(5(4(1(3(5(4(0(3(4(1(2(4(5(3(3(2(2(2(5(4(1(1(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	(12)
4(5(2(4(5(2(5(3(0(4(2(5(0(2(2(2(0(0(3(4(2(5(3(0(3(2(5(3(3(5(1(3(3(5(4(2(3(2(4(3(5(1(0(1(4(5(3(4(1(5(0(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	→	4(2(1(0(4(1(4(1(1(2(2(5(3(1(5(1(4(3(2(4(5(3(0(1(1(3(4(3(3(1(1(4(2(4(0(1(4(2(3(3(5(4(5(0(0(4(0(5(0(0(5(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	(13)
5(0(3(5(3(2(3(4(3(0(3(0(3(5(1(0(5(0(2(2(5(4(2(3(3(1(5(5(4(2(5(5(3(2(2(2(2(1(0(5(5(0(3(3(4(0(5(0(1(0(0(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	→	4(1(1(1(2(2(2(3(5(1(2(1(0(0(5(2(3(1(0(1(2(2(1(2(2(2(4(2(2(2(3(3(3(4(2(5(4(3(5(4(5(3(2(0(0(2(2(2(3(3(2(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	(14)
5(3(4(4(2(1(4(2(4(2(3(4(4(2(3(5(5(1(5(3(4(0(1(5(4(0(5(4(4(1(0(4(3(2(4(5(2(3(1(4(3(4(0(2(3(2(0(5(5(2(0(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	→	1(1(1(1(3(4(2(1(3(3(3(3(3(4(0(5(4(1(3(4(5(5(0(1(5(3(5(0(5(4(2(4(2(1(1(3(4(2(1(5(1(4(0(3(1(4(5(3(1(5(3(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	(15)
5(5(0(4(5(5(5(2(4(2(5(3(0(1(5(2(3(4(5(5(0(0(0(3(2(3(4(4(3(2(2(0(3(3(0(5(1(4(2(5(0(2(4(1(4(2(0(4(2(0(2(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	→	2(3(1(5(5(5(1(5(1(5(4(4(4(3(1(1(1(3(3(5(5(1(1(1(4(1(1(1(4(4(4(1(2(4(4(2(0(5(2(4(2(2(0(3(3(5(5(1(4(2(3(...display limit reached...)))))))))))))))))))))))))))))))))))))))))))))))))))	(16)