WORST_CASE(?, O(1)) Initial complexity problem: 1: T: (Comp: ?, Cost: 1) f12(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f12(Ar_0 + 1, Ar_1, Ar_2, Ar_3, Ar_4)) [ 9 >= Ar_0 ] (Comp: ?, Cost: 1) f25(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f25(Ar_0, Ar_1 + 1, Ar_2, Ar_3, Ar_4)) [ 9 >= Ar_1 ] (Comp: ?, Cost: 1) f25(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f36(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4)) [ Ar_1 >= 10 ] (Comp: ?, Cost: 1) f12(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f25(Ar_0, 0, Fresh_2, Ar_3, Ar_4)) [ Ar_0 >= 10 ] (Comp: ?, Cost: 1) f0(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f12(0, Ar_1, Ar_2, Fresh_0, Fresh_1)) (Comp: 1, Cost: 0) koat_start(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f0(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4)) [ 0 <= 0 ] start location: koat_start leaf cost: 0 Repeatedly propagating knowledge in problem 1 produces the following problem: 2: T: (Comp: ?, Cost: 1) f12(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f12(Ar_0 + 1, Ar_1, Ar_2, Ar_3, Ar_4)) [ 9 >= Ar_0 ] (Comp: ?, Cost: 1) f25(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f25(Ar_0, Ar_1 + 1, Ar_2, Ar_3, Ar_4)) [ 9 >= Ar_1 ] (Comp: ?, Cost: 1) f25(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f36(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4)) [ Ar_1 >= 10 ] (Comp: ?, Cost: 1) f12(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f25(Ar_0, 0, Fresh_2, Ar_3, Ar_4)) [ Ar_0 >= 10 ] (Comp: 1, Cost: 1) f0(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f12(0, Ar_1, Ar_2, Fresh_0, Fresh_1)) (Comp: 1, Cost: 0) koat_start(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f0(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4)) [ 0 <= 0 ] start location: koat_start leaf cost: 0 A polynomial rank function with Pol(f12) = 2 Pol(f25) = 1 Pol(f36) = 0 Pol(f0) = 2 Pol(koat_start) = 2 orients all transitions weakly and the transitions f25(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f36(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4)) [ Ar_1 >= 10 ] f12(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f25(Ar_0, 0, Fresh_2, Ar_3, Ar_4)) [ Ar_0 >= 10 ] strictly and produces the following problem: 3: T: (Comp: ?, Cost: 1) f12(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f12(Ar_0 + 1, Ar_1, Ar_2, Ar_3, Ar_4)) [ 9 >= Ar_0 ] (Comp: ?, Cost: 1) f25(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f25(Ar_0, Ar_1 + 1, Ar_2, Ar_3, Ar_4)) [ 9 >= Ar_1 ] (Comp: 2, Cost: 1) f25(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f36(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4)) [ Ar_1 >= 10 ] (Comp: 2, Cost: 1) f12(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f25(Ar_0, 0, Fresh_2, Ar_3, Ar_4)) [ Ar_0 >= 10 ] (Comp: 1, Cost: 1) f0(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f12(0, Ar_1, Ar_2, Fresh_0, Fresh_1)) (Comp: 1, Cost: 0) koat_start(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f0(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4)) [ 0 <= 0 ] start location: koat_start leaf cost: 0 A polynomial rank function with Pol(f12) = -V_1 + 10 Pol(f25) = -V_1 - V_2 - 9 Pol(f36) = -V_1 - V_2 - 9 Pol(f0) = 10 Pol(koat_start) = 10 orients all transitions weakly and the transition f12(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f12(Ar_0 + 1, Ar_1, Ar_2, Ar_3, Ar_4)) [ 9 >= Ar_0 ] strictly and produces the following problem: 4: T: (Comp: 10, Cost: 1) f12(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f12(Ar_0 + 1, Ar_1, Ar_2, Ar_3, Ar_4)) [ 9 >= Ar_0 ] (Comp: ?, Cost: 1) f25(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f25(Ar_0, Ar_1 + 1, Ar_2, Ar_3, Ar_4)) [ 9 >= Ar_1 ] (Comp: 2, Cost: 1) f25(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f36(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4)) [ Ar_1 >= 10 ] (Comp: 2, Cost: 1) f12(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f25(Ar_0, 0, Fresh_2, Ar_3, Ar_4)) [ Ar_0 >= 10 ] (Comp: 1, Cost: 1) f0(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f12(0, Ar_1, Ar_2, Fresh_0, Fresh_1)) (Comp: 1, Cost: 0) koat_start(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f0(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4)) [ 0 <= 0 ] start location: koat_start leaf cost: 0 A polynomial rank function with Pol(f12) = 10 Pol(f25) = -V_2 + 10 Pol(f36) = -V_2 + 10 Pol(f0) = 10 Pol(koat_start) = 10 orients all transitions weakly and the transition f25(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f25(Ar_0, Ar_1 + 1, Ar_2, Ar_3, Ar_4)) [ 9 >= Ar_1 ] strictly and produces the following problem: 5: T: (Comp: 10, Cost: 1) f12(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f12(Ar_0 + 1, Ar_1, Ar_2, Ar_3, Ar_4)) [ 9 >= Ar_0 ] (Comp: 10, Cost: 1) f25(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f25(Ar_0, Ar_1 + 1, Ar_2, Ar_3, Ar_4)) [ 9 >= Ar_1 ] (Comp: 2, Cost: 1) f25(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f36(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4)) [ Ar_1 >= 10 ] (Comp: 2, Cost: 1) f12(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f25(Ar_0, 0, Fresh_2, Ar_3, Ar_4)) [ Ar_0 >= 10 ] (Comp: 1, Cost: 1) f0(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f12(0, Ar_1, Ar_2, Fresh_0, Fresh_1)) (Comp: 1, Cost: 0) koat_start(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f0(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4)) [ 0 <= 0 ] start location: koat_start leaf cost: 0 Complexity upper bound 25 Time: 0.827 sec (SMT: 0.797 sec)