Certification Problem

Input (TPDB TRS_Standard/Transformed_CSR_04/OvConsOS_complete-noand_L)

The rewrite relation of the following TRS is considered.

U114(tt) s(length(L)) (1)
U136(tt) cons(N) (2)
zeros cons(0) (3)
U101(tt) U102(isNatKind) (4)
U102(tt) U103(isNatIListKind) (5)
U103(tt) U104(isNatIListKind) (6)
U104(tt) U105(isNat) (7)
U105(tt) U106(isNatIList) (8)
U106(tt) tt (9)
U11(tt) U12(isNatIListKind) (10)
U111(tt) U112(isNatIListKind) (11)
U112(tt) U113(isNat) (12)
U113(tt) U114(isNatKind) (13)
U12(tt) U13(isNatList) (14)
U121(tt) U122(isNatIListKind) (15)
U122(tt) nil (16)
U13(tt) tt (17)
U131(tt) U132(isNatIListKind) (18)
U132(tt) U133(isNat) (19)
U133(tt) U134(isNatKind) (20)
U134(tt) U135(isNat) (21)
U135(tt) U136(isNatKind) (22)
U21(tt) U22(isNatKind) (23)
U22(tt) U23(isNat) (24)
U23(tt) tt (25)
U31(tt) U32(isNatIListKind) (26)
U32(tt) U33(isNatList) (27)
U33(tt) tt (28)
U41(tt) U42(isNatKind) (29)
U42(tt) U43(isNatIListKind) (30)
U43(tt) U44(isNatIListKind) (31)
U44(tt) U45(isNat) (32)
U45(tt) U46(isNatIList) (33)
U46(tt) tt (34)
U51(tt) U52(isNatIListKind) (35)
U52(tt) tt (36)
U61(tt) U62(isNatIListKind) (37)
U62(tt) tt (38)
U71(tt) tt (39)
U81(tt) tt (40)
U91(tt) U92(isNatKind) (41)
U92(tt) U93(isNatIListKind) (42)
U93(tt) U94(isNatIListKind) (43)
U94(tt) U95(isNat) (44)
U95(tt) U96(isNatList) (45)
U96(tt) tt (46)
isNat tt (47)
isNat U11(isNatIListKind) (48)
isNat U21(isNatKind) (49)
isNatIList U31(isNatIListKind) (50)
isNatIList tt (51)
isNatIList U41(isNatKind) (52)
isNatIListKind tt (53)
isNatIListKind U51(isNatKind) (54)
isNatIListKind U61(isNatKind) (55)
isNatKind tt (56)
isNatKind U71(isNatIListKind) (57)
isNatKind U81(isNatKind) (58)
isNatList tt (59)
isNatList U91(isNatKind) (60)
isNatList U101(isNatKind) (61)
length(nil) 0 (62)
length(cons(N)) U111(isNatList) (63)
take(0,IL) U121(isNatIList) (64)
take(s(M),cons(N)) U131(isNatIList) (65)

Property / Task

Prove or disprove termination.

Answer / Result

No.

Proof (by AProVE @ termCOMP 2023)

1 Variable Condition Violated

The TRS violates one of the two variable conditions. Thus, it is not terminating.