MAYBE Initial complexity problem: 1: T: (Comp: ?, Cost: 1) f5(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f300(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4)) (Comp: ?, Cost: 1) f4(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1, Ar_3, Ar_4)) [ Ar_0 >= Ar_1 ] (Comp: ?, Cost: 1) f4(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2, Fresh_6, Ar_4)) [ Fresh_6 >= 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f4(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2, Fresh_5, Ar_4)) [ 0 >= Fresh_5 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f4(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f2(Ar_0, Ar_1, Ar_2, 0, Ar_4)) [ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f2(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2, Fresh_4, Ar_4)) [ Fresh_4 >= 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f2(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2, Fresh_3, Ar_4)) [ 0 >= Fresh_3 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f2(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f2(Ar_0, Ar_1, Ar_2, 0, Ar_4)) [ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f300(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f1(Ar_0, Ar_1, Ar_2, Ar_3, Fresh_2)) [ Ar_2 >= Ar_0 ] (Comp: ?, Cost: 1) f300(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1, Ar_3, Ar_4)) [ Ar_0 >= Ar_2 + 1 /\ Ar_0 >= Ar_1 ] (Comp: ?, Cost: 1) f300(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2, Fresh_1, Ar_4)) [ Fresh_1 >= 1 /\ Ar_0 >= Ar_2 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f300(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2, Fresh_0, Ar_4)) [ 0 >= Fresh_0 + 1 /\ Ar_0 >= Ar_2 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f300(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f2(Ar_0, Ar_1, Ar_2, 0, Ar_4)) [ Ar_0 >= Ar_2 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 1, Cost: 0) koat_start(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4) -> Com_1(f5(Ar_0, Ar_1, Ar_2, Ar_3, Ar_4)) [ 0 <= 0 ] start location: koat_start leaf cost: 0 Slicing away variables that do not contribute to conditions from problem 1 leaves variables [Ar_0, Ar_1, Ar_2]. We thus obtain the following problem: 2: T: (Comp: 1, Cost: 0) koat_start(Ar_0, Ar_1, Ar_2) -> Com_1(f5(Ar_0, Ar_1, Ar_2)) [ 0 <= 0 ] (Comp: ?, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_0 >= Ar_2 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_0 + 1 /\ Ar_0 >= Ar_2 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_1 >= 1 /\ Ar_0 >= Ar_2 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_2 + 1 /\ Ar_0 >= Ar_1 ] (Comp: ?, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f1(Ar_0, Ar_1, Ar_2)) [ Ar_2 >= Ar_0 ] (Comp: ?, Cost: 1) f2(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_3 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_4 >= 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f4(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_5 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_6 >= 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f4(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_1 ] (Comp: ?, Cost: 1) f5(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2)) start location: koat_start leaf cost: 0 Repeatedly propagating knowledge in problem 2 produces the following problem: 3: T: (Comp: 1, Cost: 0) koat_start(Ar_0, Ar_1, Ar_2) -> Com_1(f5(Ar_0, Ar_1, Ar_2)) [ 0 <= 0 ] (Comp: 1, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_0 >= Ar_2 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 1, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_0 + 1 /\ Ar_0 >= Ar_2 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 1, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_1 >= 1 /\ Ar_0 >= Ar_2 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_2 + 1 /\ Ar_0 >= Ar_1 ] (Comp: ?, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f1(Ar_0, Ar_1, Ar_2)) [ Ar_2 >= Ar_0 ] (Comp: ?, Cost: 1) f2(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_3 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_4 >= 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f4(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_5 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_6 >= 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f4(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_1 ] (Comp: 1, Cost: 1) f5(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2)) start location: koat_start leaf cost: 0 A polynomial rank function with Pol(koat_start) = 1 Pol(f5) = 1 Pol(f300) = 1 Pol(f2) = 1 Pol(f4) = 1 Pol(f1) = 0 orients all transitions weakly and the transition f300(Ar_0, Ar_1, Ar_2) -> Com_1(f1(Ar_0, Ar_1, Ar_2)) [ Ar_2 >= Ar_0 ] strictly and produces the following problem: 4: T: (Comp: 1, Cost: 0) koat_start(Ar_0, Ar_1, Ar_2) -> Com_1(f5(Ar_0, Ar_1, Ar_2)) [ 0 <= 0 ] (Comp: 1, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_0 >= Ar_2 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 1, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_0 + 1 /\ Ar_0 >= Ar_2 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 1, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_1 >= 1 /\ Ar_0 >= Ar_2 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_2 + 1 /\ Ar_0 >= Ar_1 ] (Comp: 1, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f1(Ar_0, Ar_1, Ar_2)) [ Ar_2 >= Ar_0 ] (Comp: ?, Cost: 1) f2(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_3 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_4 >= 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f4(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_5 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_6 >= 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f4(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_1 ] (Comp: 1, Cost: 1) f5(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2)) start location: koat_start leaf cost: 0 A polynomial rank function with Pol(f4) = 1 Pol(f300) = 0 Pol(f2) = 1 and size complexities S("f5(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2))", 0-0) = Ar_0 S("f5(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2))", 0-1) = Ar_1 S("f5(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2))", 0-2) = Ar_2 S("f4(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_1 ]", 0-0) = ? S("f4(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_1 ]", 0-1) = Ar_1 S("f4(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_1 ]", 0-2) = Ar_2 + 1 S("f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_6 >= 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-0) = ? S("f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_6 >= 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-1) = Ar_1 S("f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_6 >= 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-2) = Ar_2 S("f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_5 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-0) = ? S("f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_5 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-1) = Ar_1 S("f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_5 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-2) = Ar_2 S("f4(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 >= Ar_0 + 1 ]", 0-0) = ? S("f4(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 >= Ar_0 + 1 ]", 0-1) = Ar_1 S("f4(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 >= Ar_0 + 1 ]", 0-2) = Ar_2 S("f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_4 >= 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-0) = ? S("f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_4 >= 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-1) = Ar_1 S("f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_4 >= 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-2) = Ar_2 S("f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_3 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-0) = ? S("f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_3 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-1) = Ar_1 S("f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_3 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-2) = Ar_2 S("f2(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 >= Ar_0 + 1 ]", 0-0) = ? S("f2(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 >= Ar_0 + 1 ]", 0-1) = Ar_1 S("f2(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 >= Ar_0 + 1 ]", 0-2) = Ar_2 S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f1(Ar_0, Ar_1, Ar_2)) [ Ar_2 >= Ar_0 ]", 0-0) = ? S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f1(Ar_0, Ar_1, Ar_2)) [ Ar_2 >= Ar_0 ]", 0-1) = Ar_1 S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f1(Ar_0, Ar_1, Ar_2)) [ Ar_2 >= Ar_0 ]", 0-2) = ? S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_2 + 1 /\\ Ar_0 >= Ar_1 ]", 0-0) = ? S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_2 + 1 /\\ Ar_0 >= Ar_1 ]", 0-1) = Ar_1 S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_2 + 1 /\\ Ar_0 >= Ar_1 ]", 0-2) = ? S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_1 >= 1 /\\ Ar_0 >= Ar_2 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-0) = Ar_0 + 1 S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_1 >= 1 /\\ Ar_0 >= Ar_2 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-1) = Ar_1 S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_1 >= 1 /\\ Ar_0 >= Ar_2 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-2) = Ar_2 S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_0 + 1 /\\ Ar_0 >= Ar_2 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-0) = Ar_0 + 1 S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_0 + 1 /\\ Ar_0 >= Ar_2 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-1) = Ar_1 S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_0 + 1 /\\ Ar_0 >= Ar_2 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-2) = Ar_2 S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_0 >= Ar_2 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-0) = Ar_0 S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_0 >= Ar_2 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-1) = Ar_1 S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_0 >= Ar_2 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-2) = Ar_2 S("koat_start(Ar_0, Ar_1, Ar_2) -> Com_1(f5(Ar_0, Ar_1, Ar_2)) [ 0 <= 0 ]", 0-0) = Ar_0 S("koat_start(Ar_0, Ar_1, Ar_2) -> Com_1(f5(Ar_0, Ar_1, Ar_2)) [ 0 <= 0 ]", 0-1) = Ar_1 S("koat_start(Ar_0, Ar_1, Ar_2) -> Com_1(f5(Ar_0, Ar_1, Ar_2)) [ 0 <= 0 ]", 0-2) = Ar_2 orients the transitions f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_6 >= 1 /\ Ar_1 >= Ar_0 + 1 ] f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_5 + 1 /\ Ar_1 >= Ar_0 + 1 ] f4(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_1 ] f4(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 >= Ar_0 + 1 ] f300(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_2 + 1 /\ Ar_0 >= Ar_1 ] f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_4 >= 1 /\ Ar_1 >= Ar_0 + 1 ] f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_3 + 1 /\ Ar_1 >= Ar_0 + 1 ] f2(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 >= Ar_0 + 1 ] weakly and the transition f4(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_1 ] strictly and produces the following problem: 5: T: (Comp: 1, Cost: 0) koat_start(Ar_0, Ar_1, Ar_2) -> Com_1(f5(Ar_0, Ar_1, Ar_2)) [ 0 <= 0 ] (Comp: 1, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_0 >= Ar_2 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 1, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_0 + 1 /\ Ar_0 >= Ar_2 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 1, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_1 >= 1 /\ Ar_0 >= Ar_2 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_2 + 1 /\ Ar_0 >= Ar_1 ] (Comp: 1, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f1(Ar_0, Ar_1, Ar_2)) [ Ar_2 >= Ar_0 ] (Comp: ?, Cost: 1) f2(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_3 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_4 >= 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f4(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_5 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_6 >= 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 3, Cost: 1) f4(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_1 ] (Comp: 1, Cost: 1) f5(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2)) start location: koat_start leaf cost: 0 A polynomial rank function with Pol(koat_start) = -3*V_1 + 3*V_2 Pol(f5) = -3*V_1 + 3*V_2 Pol(f300) = -3*V_1 + 3*V_2 Pol(f2) = -2*V_1 + 2*V_2 - 1 Pol(f4) = -2*V_1 + 2*V_2 Pol(f1) = 3*V_2 - 3*V_3 orients all transitions weakly and the transitions f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_6 >= 1 /\ Ar_1 >= Ar_0 + 1 ] f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_5 + 1 /\ Ar_1 >= Ar_0 + 1 ] f4(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 >= Ar_0 + 1 ] f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_4 >= 1 /\ Ar_1 >= Ar_0 + 1 ] f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_3 + 1 /\ Ar_1 >= Ar_0 + 1 ] strictly and produces the following problem: 6: T: (Comp: 1, Cost: 0) koat_start(Ar_0, Ar_1, Ar_2) -> Com_1(f5(Ar_0, Ar_1, Ar_2)) [ 0 <= 0 ] (Comp: 1, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_0 >= Ar_2 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 1, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_0 + 1 /\ Ar_0 >= Ar_2 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 1, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_1 >= 1 /\ Ar_0 >= Ar_2 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_2 + 1 /\ Ar_0 >= Ar_1 ] (Comp: 1, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f1(Ar_0, Ar_1, Ar_2)) [ Ar_2 >= Ar_0 ] (Comp: ?, Cost: 1) f2(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 >= Ar_0 + 1 ] (Comp: 3*Ar_0 + 3*Ar_1, Cost: 1) f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_3 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 3*Ar_0 + 3*Ar_1, Cost: 1) f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_4 >= 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 3*Ar_0 + 3*Ar_1, Cost: 1) f4(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 >= Ar_0 + 1 ] (Comp: 3*Ar_0 + 3*Ar_1, Cost: 1) f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_5 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 3*Ar_0 + 3*Ar_1, Cost: 1) f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_6 >= 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 3, Cost: 1) f4(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_1 ] (Comp: 1, Cost: 1) f5(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2)) start location: koat_start leaf cost: 0 A polynomial rank function with Pol(f300) = V_1 - V_3 Pol(f2) = 0 and size complexities S("f5(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2))", 0-0) = Ar_0 S("f5(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2))", 0-1) = Ar_1 S("f5(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2))", 0-2) = Ar_2 S("f4(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_1 ]", 0-0) = 13*Ar_0 + 13*Ar_1 + 2197 S("f4(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_1 ]", 0-1) = Ar_1 S("f4(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_1 ]", 0-2) = Ar_2 + 1 S("f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_6 >= 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-0) = 13*Ar_0 + 13*Ar_1 + 169 S("f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_6 >= 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-1) = Ar_1 S("f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_6 >= 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-2) = Ar_2 S("f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_5 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-0) = 13*Ar_0 + 13*Ar_1 + 169 S("f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_5 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-1) = Ar_1 S("f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_5 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-2) = Ar_2 S("f4(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 >= Ar_0 + 1 ]", 0-0) = 13*Ar_0 + 13*Ar_1 + 169 S("f4(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 >= Ar_0 + 1 ]", 0-1) = Ar_1 S("f4(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 >= Ar_0 + 1 ]", 0-2) = Ar_2 S("f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_4 >= 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-0) = 13*Ar_0 + 13*Ar_1 + 169 S("f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_4 >= 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-1) = Ar_1 S("f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_4 >= 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-2) = Ar_2 S("f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_3 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-0) = 13*Ar_0 + 13*Ar_1 + 169 S("f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_3 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-1) = Ar_1 S("f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_3 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-2) = Ar_2 S("f2(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 >= Ar_0 + 1 ]", 0-0) = 13*Ar_0 + 13*Ar_1 + 169 S("f2(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 >= Ar_0 + 1 ]", 0-1) = Ar_1 S("f2(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 >= Ar_0 + 1 ]", 0-2) = Ar_2 S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f1(Ar_0, Ar_1, Ar_2)) [ Ar_2 >= Ar_0 ]", 0-0) = 13*Ar_0 + 13*Ar_1 + 371293 S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f1(Ar_0, Ar_1, Ar_2)) [ Ar_2 >= Ar_0 ]", 0-1) = Ar_1 S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f1(Ar_0, Ar_1, Ar_2)) [ Ar_2 >= Ar_0 ]", 0-2) = ? S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_2 + 1 /\\ Ar_0 >= Ar_1 ]", 0-0) = 13*Ar_0 + 13*Ar_1 + 28561 S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_2 + 1 /\\ Ar_0 >= Ar_1 ]", 0-1) = Ar_1 S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_2 + 1 /\\ Ar_0 >= Ar_1 ]", 0-2) = ? S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_1 >= 1 /\\ Ar_0 >= Ar_2 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-0) = Ar_0 + 1 S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_1 >= 1 /\\ Ar_0 >= Ar_2 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-1) = Ar_1 S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_1 >= 1 /\\ Ar_0 >= Ar_2 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-2) = Ar_2 S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_0 + 1 /\\ Ar_0 >= Ar_2 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-0) = Ar_0 + 1 S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_0 + 1 /\\ Ar_0 >= Ar_2 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-1) = Ar_1 S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_0 + 1 /\\ Ar_0 >= Ar_2 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-2) = Ar_2 S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_0 >= Ar_2 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-0) = Ar_0 S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_0 >= Ar_2 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-1) = Ar_1 S("f300(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_0 >= Ar_2 + 1 /\\ Ar_1 >= Ar_0 + 1 ]", 0-2) = Ar_2 S("koat_start(Ar_0, Ar_1, Ar_2) -> Com_1(f5(Ar_0, Ar_1, Ar_2)) [ 0 <= 0 ]", 0-0) = Ar_0 S("koat_start(Ar_0, Ar_1, Ar_2) -> Com_1(f5(Ar_0, Ar_1, Ar_2)) [ 0 <= 0 ]", 0-1) = Ar_1 S("koat_start(Ar_0, Ar_1, Ar_2) -> Com_1(f5(Ar_0, Ar_1, Ar_2)) [ 0 <= 0 ]", 0-2) = Ar_2 orients the transitions f300(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_2 + 1 /\ Ar_0 >= Ar_1 ] f2(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 >= Ar_0 + 1 ] weakly and the transition f300(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_2 + 1 /\ Ar_0 >= Ar_1 ] strictly and produces the following problem: 7: T: (Comp: 1, Cost: 0) koat_start(Ar_0, Ar_1, Ar_2) -> Com_1(f5(Ar_0, Ar_1, Ar_2)) [ 0 <= 0 ] (Comp: 1, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_0 >= Ar_2 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 1, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_0 + 1 /\ Ar_0 >= Ar_2 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 1, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_1 >= 1 /\ Ar_0 >= Ar_2 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 40*Ar_0 + 4*Ar_2 + 39*Ar_1 + 6594, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_2 + 1 /\ Ar_0 >= Ar_1 ] (Comp: 1, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f1(Ar_0, Ar_1, Ar_2)) [ Ar_2 >= Ar_0 ] (Comp: ?, Cost: 1) f2(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 >= Ar_0 + 1 ] (Comp: 3*Ar_0 + 3*Ar_1, Cost: 1) f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_3 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 3*Ar_0 + 3*Ar_1, Cost: 1) f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_4 >= 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 3*Ar_0 + 3*Ar_1, Cost: 1) f4(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 >= Ar_0 + 1 ] (Comp: 3*Ar_0 + 3*Ar_1, Cost: 1) f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_5 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 3*Ar_0 + 3*Ar_1, Cost: 1) f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_6 >= 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 3, Cost: 1) f4(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_1 ] (Comp: 1, Cost: 1) f5(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2)) start location: koat_start leaf cost: 0 Applied AI with 'oct' on problem 7 to obtain the following invariants: For symbol f2: X_2 - X_3 - 2 >= 0 /\ X_1 - X_3 - 1 >= 0 /\ -X_1 + X_2 - 1 >= 0 For symbol f4: X_2 - X_3 - 2 >= 0 /\ X_1 - X_3 - 2 >= 0 /\ -X_1 + X_2 >= 0 This yielded the following problem: 8: T: (Comp: 1, Cost: 1) f5(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2)) (Comp: 3, Cost: 1) f4(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_1 - Ar_2 - 2 >= 0 /\ Ar_0 - Ar_2 - 2 >= 0 /\ -Ar_0 + Ar_1 >= 0 /\ Ar_0 >= Ar_1 ] (Comp: 3*Ar_0 + 3*Ar_1, Cost: 1) f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Ar_1 - Ar_2 - 2 >= 0 /\ Ar_0 - Ar_2 - 2 >= 0 /\ -Ar_0 + Ar_1 >= 0 /\ Fresh_6 >= 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 3*Ar_0 + 3*Ar_1, Cost: 1) f4(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Ar_1 - Ar_2 - 2 >= 0 /\ Ar_0 - Ar_2 - 2 >= 0 /\ -Ar_0 + Ar_1 >= 0 /\ 0 >= Fresh_5 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 3*Ar_0 + 3*Ar_1, Cost: 1) f4(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 - Ar_2 - 2 >= 0 /\ Ar_0 - Ar_2 - 2 >= 0 /\ -Ar_0 + Ar_1 >= 0 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 3*Ar_0 + 3*Ar_1, Cost: 1) f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Ar_1 - Ar_2 - 2 >= 0 /\ Ar_0 - Ar_2 - 1 >= 0 /\ -Ar_0 + Ar_1 - 1 >= 0 /\ Fresh_4 >= 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 3*Ar_0 + 3*Ar_1, Cost: 1) f2(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Ar_1 - Ar_2 - 2 >= 0 /\ Ar_0 - Ar_2 - 1 >= 0 /\ -Ar_0 + Ar_1 - 1 >= 0 /\ 0 >= Fresh_3 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: ?, Cost: 1) f2(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_1 - Ar_2 - 2 >= 0 /\ Ar_0 - Ar_2 - 1 >= 0 /\ -Ar_0 + Ar_1 - 1 >= 0 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 1, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f1(Ar_0, Ar_1, Ar_2)) [ Ar_2 >= Ar_0 ] (Comp: 40*Ar_0 + 4*Ar_2 + 39*Ar_1 + 6594, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f300(Ar_0, Ar_1, Ar_2 + 1)) [ Ar_0 >= Ar_2 + 1 /\ Ar_0 >= Ar_1 ] (Comp: 1, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ Fresh_1 >= 1 /\ Ar_0 >= Ar_2 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 1, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f4(Ar_0 + 1, Ar_1, Ar_2)) [ 0 >= Fresh_0 + 1 /\ Ar_0 >= Ar_2 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 1, Cost: 1) f300(Ar_0, Ar_1, Ar_2) -> Com_1(f2(Ar_0, Ar_1, Ar_2)) [ Ar_0 >= Ar_2 + 1 /\ Ar_1 >= Ar_0 + 1 ] (Comp: 1, Cost: 0) koat_start(Ar_0, Ar_1, Ar_2) -> Com_1(f5(Ar_0, Ar_1, Ar_2)) [ 0 <= 0 ] start location: koat_start leaf cost: 0 Complexity upper bound ? Time: 3.769 sec (SMT: 3.624 sec)