/export/starexec/sandbox/solver/bin/starexec_run_standard /export/starexec/sandbox/benchmark/theBenchmark.xml /export/starexec/sandbox/output/output_files


--------------------------------------------------------------------------------


YES
proof of /export/starexec/sandbox/benchmark/theBenchmark.xml
# AProVE Commit ID: c69e44bd14796315568835c1ffa2502984884775 mhark 20210624 unpublished


Termination of the given CSR could be proven:

(0) CSR
(1) CSRRRRProof [EQUIVALENT, 93 ms]
(2) CSR
(3) CSRRRRProof [EQUIVALENT, 0 ms]
(4) CSR
(5) CSRRRRProof [EQUIVALENT, 7 ms]
(6) CSR
(7) CSRRRRProof [EQUIVALENT, 0 ms]
(8) CSR
(9) CSRRRRProof [EQUIVALENT, 5 ms]
(10) CSR
(11) RisEmptyProof [EQUIVALENT, 0 ms]
(12) YES


----------------------------------------

(0)
Obligation:
Context-sensitive rewrite system:
The TRS R consists of the following rules:

   U11(tt, N) -> N
   U21(tt, M, N) -> s(plus(N, M))
   and(tt, X) -> X
   isNat(0) -> tt
   isNat(plus(V1, V2)) -> and(isNat(V1), isNat(V2))
   isNat(s(V1)) -> isNat(V1)
   plus(N, 0) -> U11(isNat(N), N)
   plus(N, s(M)) -> U21(and(isNat(M), isNat(N)), M, N)

The replacement map contains the following entries:

U11: {1}
tt: empty set
U21: {1}
s: {1}
plus: {1, 2}
and: {1}
isNat: empty set
0: empty set

----------------------------------------

(1) CSRRRRProof (EQUIVALENT)
The following CSR is given: Context-sensitive rewrite system:
The TRS R consists of the following rules:

   U11(tt, N) -> N
   U21(tt, M, N) -> s(plus(N, M))
   and(tt, X) -> X
   isNat(0) -> tt
   isNat(plus(V1, V2)) -> and(isNat(V1), isNat(V2))
   isNat(s(V1)) -> isNat(V1)
   plus(N, 0) -> U11(isNat(N), N)
   plus(N, s(M)) -> U21(and(isNat(M), isNat(N)), M, N)

The replacement map contains the following entries:

U11: {1}
tt: empty set
U21: {1}
s: {1}
plus: {1, 2}
and: {1}
isNat: empty set
0: empty set
Used ordering:
Polynomial interpretation [POLO]:

   POL(0) = 0
   POL(U11(x_1, x_2)) = 1 + x_1 + x_2
   POL(U21(x_1, x_2, x_3)) = 1 + x_1 + x_2 + x_3
   POL(and(x_1, x_2)) = x_1 + x_2
   POL(isNat(x_1)) = 0
   POL(plus(x_1, x_2)) = 1 + x_1 + x_2
   POL(s(x_1)) = x_1
   POL(tt) = 0
With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly:

   U11(tt, N) -> N




----------------------------------------

(2)
Obligation:
Context-sensitive rewrite system:
The TRS R consists of the following rules:

   U21(tt, M, N) -> s(plus(N, M))
   and(tt, X) -> X
   isNat(0) -> tt
   isNat(plus(V1, V2)) -> and(isNat(V1), isNat(V2))
   isNat(s(V1)) -> isNat(V1)
   plus(N, 0) -> U11(isNat(N), N)
   plus(N, s(M)) -> U21(and(isNat(M), isNat(N)), M, N)

The replacement map contains the following entries:

U11: {1}
tt: empty set
U21: {1}
s: {1}
plus: {1, 2}
and: {1}
isNat: empty set
0: empty set

----------------------------------------

(3) CSRRRRProof (EQUIVALENT)
The following CSR is given: Context-sensitive rewrite system:
The TRS R consists of the following rules:

   U21(tt, M, N) -> s(plus(N, M))
   and(tt, X) -> X
   isNat(0) -> tt
   isNat(plus(V1, V2)) -> and(isNat(V1), isNat(V2))
   isNat(s(V1)) -> isNat(V1)
   plus(N, 0) -> U11(isNat(N), N)
   plus(N, s(M)) -> U21(and(isNat(M), isNat(N)), M, N)

The replacement map contains the following entries:

U11: {1}
tt: empty set
U21: {1}
s: {1}
plus: {1, 2}
and: {1}
isNat: empty set
0: empty set
Used ordering:
Polynomial interpretation [POLO]:

   POL(0) = 1
   POL(U11(x_1, x_2)) = 2*x_1 + x_2
   POL(U21(x_1, x_2, x_3)) = 2*x_1 + x_2 + x_3
   POL(and(x_1, x_2)) = 2*x_1 + 2*x_2
   POL(isNat(x_1)) = 0
   POL(plus(x_1, x_2)) = x_1 + x_2
   POL(s(x_1)) = x_1
   POL(tt) = 0
With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly:

   plus(N, 0) -> U11(isNat(N), N)




----------------------------------------

(4)
Obligation:
Context-sensitive rewrite system:
The TRS R consists of the following rules:

   U21(tt, M, N) -> s(plus(N, M))
   and(tt, X) -> X
   isNat(0) -> tt
   isNat(plus(V1, V2)) -> and(isNat(V1), isNat(V2))
   isNat(s(V1)) -> isNat(V1)
   plus(N, s(M)) -> U21(and(isNat(M), isNat(N)), M, N)

The replacement map contains the following entries:

tt: empty set
U21: {1}
s: {1}
plus: {1, 2}
and: {1}
isNat: empty set
0: empty set

----------------------------------------

(5) CSRRRRProof (EQUIVALENT)
The following CSR is given: Context-sensitive rewrite system:
The TRS R consists of the following rules:

   U21(tt, M, N) -> s(plus(N, M))
   and(tt, X) -> X
   isNat(0) -> tt
   isNat(plus(V1, V2)) -> and(isNat(V1), isNat(V2))
   isNat(s(V1)) -> isNat(V1)
   plus(N, s(M)) -> U21(and(isNat(M), isNat(N)), M, N)

The replacement map contains the following entries:

tt: empty set
U21: {1}
s: {1}
plus: {1, 2}
and: {1}
isNat: empty set
0: empty set
Used ordering:
Polynomial interpretation [POLO]:

   POL(0) = 2
   POL(U21(x_1, x_2, x_3)) = 2 + 2*x_1 + 2*x_2 + x_3
   POL(and(x_1, x_2)) = 2*x_1 + 2*x_2
   POL(isNat(x_1)) = 0
   POL(plus(x_1, x_2)) = x_1 + 2*x_2
   POL(s(x_1)) = 1 + x_1
   POL(tt) = 0
With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly:

   U21(tt, M, N) -> s(plus(N, M))




----------------------------------------

(6)
Obligation:
Context-sensitive rewrite system:
The TRS R consists of the following rules:

   and(tt, X) -> X
   isNat(0) -> tt
   isNat(plus(V1, V2)) -> and(isNat(V1), isNat(V2))
   isNat(s(V1)) -> isNat(V1)
   plus(N, s(M)) -> U21(and(isNat(M), isNat(N)), M, N)

The replacement map contains the following entries:

tt: empty set
U21: {1}
s: {1}
plus: {1, 2}
and: {1}
isNat: empty set
0: empty set

----------------------------------------

(7) CSRRRRProof (EQUIVALENT)
The following CSR is given: Context-sensitive rewrite system:
The TRS R consists of the following rules:

   and(tt, X) -> X
   isNat(0) -> tt
   isNat(plus(V1, V2)) -> and(isNat(V1), isNat(V2))
   isNat(s(V1)) -> isNat(V1)
   plus(N, s(M)) -> U21(and(isNat(M), isNat(N)), M, N)

The replacement map contains the following entries:

tt: empty set
U21: {1}
s: {1}
plus: {1, 2}
and: {1}
isNat: empty set
0: empty set
Used ordering:
Polynomial interpretation [POLO]:

   POL(0) = 2
   POL(U21(x_1, x_2, x_3)) = 2*x_1 + 2*x_2 + 2*x_3
   POL(and(x_1, x_2)) = 2*x_1 + 2*x_2
   POL(isNat(x_1)) = 0
   POL(plus(x_1, x_2)) = 2 + 2*x_1 + x_2
   POL(s(x_1)) = 1 + 2*x_1
   POL(tt) = 0
With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly:

   plus(N, s(M)) -> U21(and(isNat(M), isNat(N)), M, N)




----------------------------------------

(8)
Obligation:
Context-sensitive rewrite system:
The TRS R consists of the following rules:

   and(tt, X) -> X
   isNat(0) -> tt
   isNat(plus(V1, V2)) -> and(isNat(V1), isNat(V2))
   isNat(s(V1)) -> isNat(V1)

The replacement map contains the following entries:

tt: empty set
s: {1}
plus: {1, 2}
and: {1}
isNat: empty set
0: empty set

----------------------------------------

(9) CSRRRRProof (EQUIVALENT)
The following CSR is given: Context-sensitive rewrite system:
The TRS R consists of the following rules:

   and(tt, X) -> X
   isNat(0) -> tt
   isNat(plus(V1, V2)) -> and(isNat(V1), isNat(V2))
   isNat(s(V1)) -> isNat(V1)

The replacement map contains the following entries:

tt: empty set
s: {1}
plus: {1, 2}
and: {1}
isNat: empty set
0: empty set
Used ordering:
Polynomial interpretation [POLO]:

   POL(0) = 1
   POL(and(x_1, x_2)) = x_1 + x_2
   POL(isNat(x_1)) = 1 + 2*x_1
   POL(plus(x_1, x_2)) = 2 + 2*x_1 + x_2
   POL(s(x_1)) = 2 + x_1
   POL(tt) = 2
With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly:

   and(tt, X) -> X
   isNat(0) -> tt
   isNat(plus(V1, V2)) -> and(isNat(V1), isNat(V2))
   isNat(s(V1)) -> isNat(V1)




----------------------------------------

(10)
Obligation:
Context-sensitive rewrite system:
R is empty.

----------------------------------------

(11) RisEmptyProof (EQUIVALENT)
The CSR R is empty. Hence, termination is trivially proven.
----------------------------------------

(12)
YES