/export/starexec/sandbox/solver/bin/starexec_run_complexity /export/starexec/sandbox/benchmark/theBenchmark.koat /export/starexec/sandbox/output/output_files -------------------------------------------------------------------------------- WORST_CASE(Omega(n^2), O(n^2)) proof of /export/starexec/sandbox/benchmark/theBenchmark.koat # AProVE Commit ID: 794c25de1cacf0d048858bcd21c9a779e1221865 marcel 20200619 unpublished dirty The runtime complexity of the given CpxIntTrs could be proven to be BOUNDS(n^2, n^2). (0) CpxIntTrs (1) Koat Proof [FINISHED, 214 ms] (2) BOUNDS(1, n^2) (3) Loat Proof [FINISHED, 820 ms] (4) BOUNDS(n^2, INF) ---------------------------------------- (0) Obligation: Complexity Int TRS consisting of the following rules: eval_cousot9_start(v__0, v_N, v_i_0, v_j) -> Com_1(eval_cousot9_bb0_in(v__0, v_N, v_i_0, v_j)) :|: TRUE eval_cousot9_bb0_in(v__0, v_N, v_i_0, v_j) -> Com_1(eval_cousot9_0(v__0, v_N, v_i_0, v_j)) :|: TRUE eval_cousot9_0(v__0, v_N, v_i_0, v_j) -> Com_1(eval_cousot9_1(v__0, v_N, v_i_0, v_j)) :|: TRUE eval_cousot9_1(v__0, v_N, v_i_0, v_j) -> Com_1(eval_cousot9_2(v__0, v_N, v_i_0, v_j)) :|: TRUE eval_cousot9_2(v__0, v_N, v_i_0, v_j) -> Com_1(eval_cousot9_3(v__0, v_N, v_i_0, v_j)) :|: TRUE eval_cousot9_3(v__0, v_N, v_i_0, v_j) -> Com_1(eval_cousot9_4(v__0, v_N, v_i_0, v_j)) :|: TRUE eval_cousot9_4(v__0, v_N, v_i_0, v_j) -> Com_1(eval_cousot9_5(v__0, v_N, v_i_0, v_j)) :|: TRUE eval_cousot9_5(v__0, v_N, v_i_0, v_j) -> Com_1(eval_cousot9_6(v__0, v_N, v_i_0, v_j)) :|: TRUE eval_cousot9_6(v__0, v_N, v_i_0, v_j) -> Com_1(eval_cousot9_bb1_in(v_j, v_N, v_N, v_j)) :|: TRUE eval_cousot9_bb1_in(v__0, v_N, v_i_0, v_j) -> Com_1(eval_cousot9_bb2_in(v__0, v_N, v_i_0, v_j)) :|: v_i_0 > 0 eval_cousot9_bb1_in(v__0, v_N, v_i_0, v_j) -> Com_1(eval_cousot9_bb3_in(v__0, v_N, v_i_0, v_j)) :|: v_i_0 <= 0 eval_cousot9_bb2_in(v__0, v_N, v_i_0, v_j) -> Com_1(eval_cousot9_bb1_in(v__0 - 1, v_N, v_i_0, v_j)) :|: v__0 > 0 eval_cousot9_bb2_in(v__0, v_N, v_i_0, v_j) -> Com_1(eval_cousot9_bb1_in(v_N, v_N, v_i_0, v_j)) :|: v__0 > 0 && v__0 <= 0 eval_cousot9_bb2_in(v__0, v_N, v_i_0, v_j) -> Com_1(eval_cousot9_bb1_in(v__0 - 1, v_N, v_i_0 - 1, v_j)) :|: v__0 <= 0 && v__0 > 0 eval_cousot9_bb2_in(v__0, v_N, v_i_0, v_j) -> Com_1(eval_cousot9_bb1_in(v_N, v_N, v_i_0 - 1, v_j)) :|: v__0 <= 0 eval_cousot9_bb3_in(v__0, v_N, v_i_0, v_j) -> Com_1(eval_cousot9_stop(v__0, v_N, v_i_0, v_j)) :|: TRUE The start-symbols are:[eval_cousot9_start_4] ---------------------------------------- (1) Koat Proof (FINISHED) YES(?, 2*Ar_3 + 2*Ar_3^2 + 2*Ar_1 + 14) Initial complexity problem: 1: T: (Comp: ?, Cost: 1) evalcousot9start(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: ?, Cost: 1) evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot90(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: ?, Cost: 1) evalcousot90(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot91(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: ?, Cost: 1) evalcousot91(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot92(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: ?, Cost: 1) evalcousot92(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot93(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: ?, Cost: 1) evalcousot93(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot94(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: ?, Cost: 1) evalcousot94(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot95(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: ?, Cost: 1) evalcousot95(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot96(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: ?, Cost: 1) evalcousot96(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_1, Ar_1, Ar_3, Ar_3)) (Comp: ?, Cost: 1) evalcousot9bb1in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3)) [ Ar_2 >= 1 ] (Comp: ?, Cost: 1) evalcousot9bb1in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb3in(Ar_0, Ar_1, Ar_2, Ar_3)) [ 0 >= Ar_2 ] (Comp: ?, Cost: 1) evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_0 - 1, Ar_1, Ar_2, Ar_3)) [ Ar_0 >= 1 ] (Comp: ?, Cost: 1) evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_3, Ar_1, Ar_2, Ar_3)) [ Ar_0 >= 1 /\ 0 >= Ar_0 ] (Comp: ?, Cost: 1) evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_0 - 1, Ar_1, Ar_2 - 1, Ar_3)) [ 0 >= Ar_0 /\ Ar_0 >= 1 ] (Comp: ?, Cost: 1) evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_3, Ar_1, Ar_2 - 1, Ar_3)) [ 0 >= Ar_0 ] (Comp: ?, Cost: 1) evalcousot9bb3in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9stop(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 0) koat_start(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9start(Ar_0, Ar_1, Ar_2, Ar_3)) [ 0 <= 0 ] start location: koat_start leaf cost: 0 Testing for reachability in the complexity graph removes the following transitions from problem 1: evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_3, Ar_1, Ar_2, Ar_3)) [ Ar_0 >= 1 /\ 0 >= Ar_0 ] evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_0 - 1, Ar_1, Ar_2 - 1, Ar_3)) [ 0 >= Ar_0 /\ Ar_0 >= 1 ] We thus obtain the following problem: 2: T: (Comp: ?, Cost: 1) evalcousot9bb3in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9stop(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: ?, Cost: 1) evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_3, Ar_1, Ar_2 - 1, Ar_3)) [ 0 >= Ar_0 ] (Comp: ?, Cost: 1) evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_0 - 1, Ar_1, Ar_2, Ar_3)) [ Ar_0 >= 1 ] (Comp: ?, Cost: 1) evalcousot9bb1in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb3in(Ar_0, Ar_1, Ar_2, Ar_3)) [ 0 >= Ar_2 ] (Comp: ?, Cost: 1) evalcousot9bb1in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3)) [ Ar_2 >= 1 ] (Comp: ?, Cost: 1) evalcousot96(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_1, Ar_1, Ar_3, Ar_3)) (Comp: ?, Cost: 1) evalcousot95(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot96(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: ?, Cost: 1) evalcousot94(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot95(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: ?, Cost: 1) evalcousot93(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot94(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: ?, Cost: 1) evalcousot92(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot93(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: ?, Cost: 1) evalcousot91(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot92(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: ?, Cost: 1) evalcousot90(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot91(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: ?, Cost: 1) evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot90(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: ?, Cost: 1) evalcousot9start(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 0) koat_start(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9start(Ar_0, Ar_1, Ar_2, Ar_3)) [ 0 <= 0 ] start location: koat_start leaf cost: 0 Repeatedly propagating knowledge in problem 2 produces the following problem: 3: T: (Comp: ?, Cost: 1) evalcousot9bb3in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9stop(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: ?, Cost: 1) evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_3, Ar_1, Ar_2 - 1, Ar_3)) [ 0 >= Ar_0 ] (Comp: ?, Cost: 1) evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_0 - 1, Ar_1, Ar_2, Ar_3)) [ Ar_0 >= 1 ] (Comp: ?, Cost: 1) evalcousot9bb1in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb3in(Ar_0, Ar_1, Ar_2, Ar_3)) [ 0 >= Ar_2 ] (Comp: ?, Cost: 1) evalcousot9bb1in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3)) [ Ar_2 >= 1 ] (Comp: 1, Cost: 1) evalcousot96(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_1, Ar_1, Ar_3, Ar_3)) (Comp: 1, Cost: 1) evalcousot95(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot96(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot94(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot95(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot93(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot94(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot92(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot93(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot91(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot92(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot90(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot91(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot90(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot9start(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 0) koat_start(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9start(Ar_0, Ar_1, Ar_2, Ar_3)) [ 0 <= 0 ] start location: koat_start leaf cost: 0 A polynomial rank function with Pol(evalcousot9bb3in) = 1 Pol(evalcousot9stop) = 0 Pol(evalcousot9bb2in) = 2 Pol(evalcousot9bb1in) = 2 Pol(evalcousot96) = 2 Pol(evalcousot95) = 2 Pol(evalcousot94) = 2 Pol(evalcousot93) = 2 Pol(evalcousot92) = 2 Pol(evalcousot91) = 2 Pol(evalcousot90) = 2 Pol(evalcousot9bb0in) = 2 Pol(evalcousot9start) = 2 Pol(koat_start) = 2 orients all transitions weakly and the transitions evalcousot9bb3in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9stop(Ar_0, Ar_1, Ar_2, Ar_3)) evalcousot9bb1in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb3in(Ar_0, Ar_1, Ar_2, Ar_3)) [ 0 >= Ar_2 ] strictly and produces the following problem: 4: T: (Comp: 2, Cost: 1) evalcousot9bb3in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9stop(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: ?, Cost: 1) evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_3, Ar_1, Ar_2 - 1, Ar_3)) [ 0 >= Ar_0 ] (Comp: ?, Cost: 1) evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_0 - 1, Ar_1, Ar_2, Ar_3)) [ Ar_0 >= 1 ] (Comp: 2, Cost: 1) evalcousot9bb1in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb3in(Ar_0, Ar_1, Ar_2, Ar_3)) [ 0 >= Ar_2 ] (Comp: ?, Cost: 1) evalcousot9bb1in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3)) [ Ar_2 >= 1 ] (Comp: 1, Cost: 1) evalcousot96(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_1, Ar_1, Ar_3, Ar_3)) (Comp: 1, Cost: 1) evalcousot95(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot96(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot94(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot95(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot93(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot94(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot92(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot93(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot91(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot92(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot90(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot91(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot90(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot9start(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 0) koat_start(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9start(Ar_0, Ar_1, Ar_2, Ar_3)) [ 0 <= 0 ] start location: koat_start leaf cost: 0 Applied AI with 'oct' on problem 4 to obtain the following invariants: For symbol evalcousot9bb1in: -X_3 + X_4 >= 0 For symbol evalcousot9bb2in: X_4 - 1 >= 0 /\ X_3 + X_4 - 2 >= 0 /\ -X_3 + X_4 >= 0 /\ X_3 - 1 >= 0 For symbol evalcousot9bb3in: -X_3 + X_4 >= 0 /\ -X_3 >= 0 This yielded the following problem: 5: T: (Comp: 1, Cost: 0) koat_start(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9start(Ar_0, Ar_1, Ar_2, Ar_3)) [ 0 <= 0 ] (Comp: 1, Cost: 1) evalcousot9start(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot90(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot90(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot91(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot91(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot92(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot92(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot93(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot93(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot94(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot94(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot95(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot95(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot96(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot96(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_1, Ar_1, Ar_3, Ar_3)) (Comp: ?, Cost: 1) evalcousot9bb1in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3)) [ -Ar_2 + Ar_3 >= 0 /\ Ar_2 >= 1 ] (Comp: 2, Cost: 1) evalcousot9bb1in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb3in(Ar_0, Ar_1, Ar_2, Ar_3)) [ -Ar_2 + Ar_3 >= 0 /\ 0 >= Ar_2 ] (Comp: ?, Cost: 1) evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_0 - 1, Ar_1, Ar_2, Ar_3)) [ Ar_3 - 1 >= 0 /\ Ar_2 + Ar_3 - 2 >= 0 /\ -Ar_2 + Ar_3 >= 0 /\ Ar_2 - 1 >= 0 /\ Ar_0 >= 1 ] (Comp: ?, Cost: 1) evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_3, Ar_1, Ar_2 - 1, Ar_3)) [ Ar_3 - 1 >= 0 /\ Ar_2 + Ar_3 - 2 >= 0 /\ -Ar_2 + Ar_3 >= 0 /\ Ar_2 - 1 >= 0 /\ 0 >= Ar_0 ] (Comp: 2, Cost: 1) evalcousot9bb3in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9stop(Ar_0, Ar_1, Ar_2, Ar_3)) [ -Ar_2 + Ar_3 >= 0 /\ -Ar_2 >= 0 ] start location: koat_start leaf cost: 0 A polynomial rank function with Pol(koat_start) = V_4 Pol(evalcousot9start) = V_4 Pol(evalcousot9bb0in) = V_4 Pol(evalcousot90) = V_4 Pol(evalcousot91) = V_4 Pol(evalcousot92) = V_4 Pol(evalcousot93) = V_4 Pol(evalcousot94) = V_4 Pol(evalcousot95) = V_4 Pol(evalcousot96) = V_4 Pol(evalcousot9bb1in) = V_3 Pol(evalcousot9bb2in) = V_3 Pol(evalcousot9bb3in) = V_3 Pol(evalcousot9stop) = V_3 orients all transitions weakly and the transition evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_3, Ar_1, Ar_2 - 1, Ar_3)) [ Ar_3 - 1 >= 0 /\ Ar_2 + Ar_3 - 2 >= 0 /\ -Ar_2 + Ar_3 >= 0 /\ Ar_2 - 1 >= 0 /\ 0 >= Ar_0 ] strictly and produces the following problem: 6: T: (Comp: 1, Cost: 0) koat_start(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9start(Ar_0, Ar_1, Ar_2, Ar_3)) [ 0 <= 0 ] (Comp: 1, Cost: 1) evalcousot9start(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot90(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot90(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot91(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot91(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot92(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot92(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot93(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot93(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot94(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot94(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot95(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot95(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot96(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot96(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_1, Ar_1, Ar_3, Ar_3)) (Comp: ?, Cost: 1) evalcousot9bb1in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3)) [ -Ar_2 + Ar_3 >= 0 /\ Ar_2 >= 1 ] (Comp: 2, Cost: 1) evalcousot9bb1in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb3in(Ar_0, Ar_1, Ar_2, Ar_3)) [ -Ar_2 + Ar_3 >= 0 /\ 0 >= Ar_2 ] (Comp: ?, Cost: 1) evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_0 - 1, Ar_1, Ar_2, Ar_3)) [ Ar_3 - 1 >= 0 /\ Ar_2 + Ar_3 - 2 >= 0 /\ -Ar_2 + Ar_3 >= 0 /\ Ar_2 - 1 >= 0 /\ Ar_0 >= 1 ] (Comp: Ar_3, Cost: 1) evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_3, Ar_1, Ar_2 - 1, Ar_3)) [ Ar_3 - 1 >= 0 /\ Ar_2 + Ar_3 - 2 >= 0 /\ -Ar_2 + Ar_3 >= 0 /\ Ar_2 - 1 >= 0 /\ 0 >= Ar_0 ] (Comp: 2, Cost: 1) evalcousot9bb3in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9stop(Ar_0, Ar_1, Ar_2, Ar_3)) [ -Ar_2 + Ar_3 >= 0 /\ -Ar_2 >= 0 ] start location: koat_start leaf cost: 0 A polynomial rank function with Pol(evalcousot9bb2in) = V_1 Pol(evalcousot9bb1in) = V_1 and size complexities S("evalcousot9bb3in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9stop(Ar_0, Ar_1, Ar_2, Ar_3)) [ -Ar_2 + Ar_3 >= 0 /\\ -Ar_2 >= 0 ]", 0-0) = Ar_1 + Ar_3 S("evalcousot9bb3in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9stop(Ar_0, Ar_1, Ar_2, Ar_3)) [ -Ar_2 + Ar_3 >= 0 /\\ -Ar_2 >= 0 ]", 0-1) = Ar_1 S("evalcousot9bb3in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9stop(Ar_0, Ar_1, Ar_2, Ar_3)) [ -Ar_2 + Ar_3 >= 0 /\\ -Ar_2 >= 0 ]", 0-2) = Ar_3 S("evalcousot9bb3in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9stop(Ar_0, Ar_1, Ar_2, Ar_3)) [ -Ar_2 + Ar_3 >= 0 /\\ -Ar_2 >= 0 ]", 0-3) = Ar_3 S("evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_3, Ar_1, Ar_2 - 1, Ar_3)) [ Ar_3 - 1 >= 0 /\\ Ar_2 + Ar_3 - 2 >= 0 /\\ -Ar_2 + Ar_3 >= 0 /\\ Ar_2 - 1 >= 0 /\\ 0 >= Ar_0 ]", 0-0) = Ar_3 S("evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_3, Ar_1, Ar_2 - 1, Ar_3)) [ Ar_3 - 1 >= 0 /\\ Ar_2 + Ar_3 - 2 >= 0 /\\ -Ar_2 + Ar_3 >= 0 /\\ Ar_2 - 1 >= 0 /\\ 0 >= Ar_0 ]", 0-1) = Ar_1 S("evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_3, Ar_1, Ar_2 - 1, Ar_3)) [ Ar_3 - 1 >= 0 /\\ Ar_2 + Ar_3 - 2 >= 0 /\\ -Ar_2 + Ar_3 >= 0 /\\ Ar_2 - 1 >= 0 /\\ 0 >= Ar_0 ]", 0-2) = Ar_3 S("evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_3, Ar_1, Ar_2 - 1, Ar_3)) [ Ar_3 - 1 >= 0 /\\ Ar_2 + Ar_3 - 2 >= 0 /\\ -Ar_2 + Ar_3 >= 0 /\\ Ar_2 - 1 >= 0 /\\ 0 >= Ar_0 ]", 0-3) = Ar_3 S("evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_0 - 1, Ar_1, Ar_2, Ar_3)) [ Ar_3 - 1 >= 0 /\\ Ar_2 + Ar_3 - 2 >= 0 /\\ -Ar_2 + Ar_3 >= 0 /\\ Ar_2 - 1 >= 0 /\\ Ar_0 >= 1 ]", 0-0) = Ar_1 + Ar_3 S("evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_0 - 1, Ar_1, Ar_2, Ar_3)) [ Ar_3 - 1 >= 0 /\\ Ar_2 + Ar_3 - 2 >= 0 /\\ -Ar_2 + Ar_3 >= 0 /\\ Ar_2 - 1 >= 0 /\\ Ar_0 >= 1 ]", 0-1) = Ar_1 S("evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_0 - 1, Ar_1, Ar_2, Ar_3)) [ Ar_3 - 1 >= 0 /\\ Ar_2 + Ar_3 - 2 >= 0 /\\ -Ar_2 + Ar_3 >= 0 /\\ Ar_2 - 1 >= 0 /\\ Ar_0 >= 1 ]", 0-2) = Ar_3 S("evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_0 - 1, Ar_1, Ar_2, Ar_3)) [ Ar_3 - 1 >= 0 /\\ Ar_2 + Ar_3 - 2 >= 0 /\\ -Ar_2 + Ar_3 >= 0 /\\ Ar_2 - 1 >= 0 /\\ Ar_0 >= 1 ]", 0-3) = Ar_3 S("evalcousot9bb1in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb3in(Ar_0, Ar_1, Ar_2, Ar_3)) [ -Ar_2 + Ar_3 >= 0 /\\ 0 >= Ar_2 ]", 0-0) = Ar_1 + Ar_3 S("evalcousot9bb1in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb3in(Ar_0, Ar_1, Ar_2, Ar_3)) [ -Ar_2 + Ar_3 >= 0 /\\ 0 >= Ar_2 ]", 0-1) = Ar_1 S("evalcousot9bb1in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb3in(Ar_0, Ar_1, Ar_2, Ar_3)) [ -Ar_2 + Ar_3 >= 0 /\\ 0 >= Ar_2 ]", 0-2) = Ar_3 S("evalcousot9bb1in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb3in(Ar_0, Ar_1, Ar_2, Ar_3)) [ -Ar_2 + Ar_3 >= 0 /\\ 0 >= Ar_2 ]", 0-3) = Ar_3 S("evalcousot9bb1in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3)) [ -Ar_2 + Ar_3 >= 0 /\\ Ar_2 >= 1 ]", 0-0) = Ar_1 + Ar_3 S("evalcousot9bb1in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3)) [ -Ar_2 + Ar_3 >= 0 /\\ Ar_2 >= 1 ]", 0-1) = Ar_1 S("evalcousot9bb1in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3)) [ -Ar_2 + Ar_3 >= 0 /\\ Ar_2 >= 1 ]", 0-2) = Ar_3 S("evalcousot9bb1in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3)) [ -Ar_2 + Ar_3 >= 0 /\\ Ar_2 >= 1 ]", 0-3) = Ar_3 S("evalcousot96(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_1, Ar_1, Ar_3, Ar_3))", 0-0) = Ar_1 S("evalcousot96(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_1, Ar_1, Ar_3, Ar_3))", 0-1) = Ar_1 S("evalcousot96(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_1, Ar_1, Ar_3, Ar_3))", 0-2) = Ar_3 S("evalcousot96(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_1, Ar_1, Ar_3, Ar_3))", 0-3) = Ar_3 S("evalcousot95(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot96(Ar_0, Ar_1, Ar_2, Ar_3))", 0-0) = Ar_0 S("evalcousot95(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot96(Ar_0, Ar_1, Ar_2, Ar_3))", 0-1) = Ar_1 S("evalcousot95(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot96(Ar_0, Ar_1, Ar_2, Ar_3))", 0-2) = Ar_2 S("evalcousot95(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot96(Ar_0, Ar_1, Ar_2, Ar_3))", 0-3) = Ar_3 S("evalcousot94(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot95(Ar_0, Ar_1, Ar_2, Ar_3))", 0-0) = Ar_0 S("evalcousot94(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot95(Ar_0, Ar_1, Ar_2, Ar_3))", 0-1) = Ar_1 S("evalcousot94(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot95(Ar_0, Ar_1, Ar_2, Ar_3))", 0-2) = Ar_2 S("evalcousot94(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot95(Ar_0, Ar_1, Ar_2, Ar_3))", 0-3) = Ar_3 S("evalcousot93(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot94(Ar_0, Ar_1, Ar_2, Ar_3))", 0-0) = Ar_0 S("evalcousot93(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot94(Ar_0, Ar_1, Ar_2, Ar_3))", 0-1) = Ar_1 S("evalcousot93(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot94(Ar_0, Ar_1, Ar_2, Ar_3))", 0-2) = Ar_2 S("evalcousot93(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot94(Ar_0, Ar_1, Ar_2, Ar_3))", 0-3) = Ar_3 S("evalcousot92(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot93(Ar_0, Ar_1, Ar_2, Ar_3))", 0-0) = Ar_0 S("evalcousot92(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot93(Ar_0, Ar_1, Ar_2, Ar_3))", 0-1) = Ar_1 S("evalcousot92(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot93(Ar_0, Ar_1, Ar_2, Ar_3))", 0-2) = Ar_2 S("evalcousot92(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot93(Ar_0, Ar_1, Ar_2, Ar_3))", 0-3) = Ar_3 S("evalcousot91(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot92(Ar_0, Ar_1, Ar_2, Ar_3))", 0-0) = Ar_0 S("evalcousot91(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot92(Ar_0, Ar_1, Ar_2, Ar_3))", 0-1) = Ar_1 S("evalcousot91(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot92(Ar_0, Ar_1, Ar_2, Ar_3))", 0-2) = Ar_2 S("evalcousot91(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot92(Ar_0, Ar_1, Ar_2, Ar_3))", 0-3) = Ar_3 S("evalcousot90(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot91(Ar_0, Ar_1, Ar_2, Ar_3))", 0-0) = Ar_0 S("evalcousot90(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot91(Ar_0, Ar_1, Ar_2, Ar_3))", 0-1) = Ar_1 S("evalcousot90(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot91(Ar_0, Ar_1, Ar_2, Ar_3))", 0-2) = Ar_2 S("evalcousot90(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot91(Ar_0, Ar_1, Ar_2, Ar_3))", 0-3) = Ar_3 S("evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot90(Ar_0, Ar_1, Ar_2, Ar_3))", 0-0) = Ar_0 S("evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot90(Ar_0, Ar_1, Ar_2, Ar_3))", 0-1) = Ar_1 S("evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot90(Ar_0, Ar_1, Ar_2, Ar_3))", 0-2) = Ar_2 S("evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot90(Ar_0, Ar_1, Ar_2, Ar_3))", 0-3) = Ar_3 S("evalcousot9start(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3))", 0-0) = Ar_0 S("evalcousot9start(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3))", 0-1) = Ar_1 S("evalcousot9start(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3))", 0-2) = Ar_2 S("evalcousot9start(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3))", 0-3) = Ar_3 S("koat_start(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9start(Ar_0, Ar_1, Ar_2, Ar_3)) [ 0 <= 0 ]", 0-0) = Ar_0 S("koat_start(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9start(Ar_0, Ar_1, Ar_2, Ar_3)) [ 0 <= 0 ]", 0-1) = Ar_1 S("koat_start(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9start(Ar_0, Ar_1, Ar_2, Ar_3)) [ 0 <= 0 ]", 0-2) = Ar_2 S("koat_start(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9start(Ar_0, Ar_1, Ar_2, Ar_3)) [ 0 <= 0 ]", 0-3) = Ar_3 orients the transitions evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_0 - 1, Ar_1, Ar_2, Ar_3)) [ Ar_3 - 1 >= 0 /\ Ar_2 + Ar_3 - 2 >= 0 /\ -Ar_2 + Ar_3 >= 0 /\ Ar_2 - 1 >= 0 /\ Ar_0 >= 1 ] evalcousot9bb1in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3)) [ -Ar_2 + Ar_3 >= 0 /\ Ar_2 >= 1 ] weakly and the transition evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_0 - 1, Ar_1, Ar_2, Ar_3)) [ Ar_3 - 1 >= 0 /\ Ar_2 + Ar_3 - 2 >= 0 /\ -Ar_2 + Ar_3 >= 0 /\ Ar_2 - 1 >= 0 /\ Ar_0 >= 1 ] strictly and produces the following problem: 7: T: (Comp: 1, Cost: 0) koat_start(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9start(Ar_0, Ar_1, Ar_2, Ar_3)) [ 0 <= 0 ] (Comp: 1, Cost: 1) evalcousot9start(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot90(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot90(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot91(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot91(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot92(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot92(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot93(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot93(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot94(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot94(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot95(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot95(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot96(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot96(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_1, Ar_1, Ar_3, Ar_3)) (Comp: ?, Cost: 1) evalcousot9bb1in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3)) [ -Ar_2 + Ar_3 >= 0 /\ Ar_2 >= 1 ] (Comp: 2, Cost: 1) evalcousot9bb1in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb3in(Ar_0, Ar_1, Ar_2, Ar_3)) [ -Ar_2 + Ar_3 >= 0 /\ 0 >= Ar_2 ] (Comp: Ar_3^2 + Ar_1, Cost: 1) evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_0 - 1, Ar_1, Ar_2, Ar_3)) [ Ar_3 - 1 >= 0 /\ Ar_2 + Ar_3 - 2 >= 0 /\ -Ar_2 + Ar_3 >= 0 /\ Ar_2 - 1 >= 0 /\ Ar_0 >= 1 ] (Comp: Ar_3, Cost: 1) evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_3, Ar_1, Ar_2 - 1, Ar_3)) [ Ar_3 - 1 >= 0 /\ Ar_2 + Ar_3 - 2 >= 0 /\ -Ar_2 + Ar_3 >= 0 /\ Ar_2 - 1 >= 0 /\ 0 >= Ar_0 ] (Comp: 2, Cost: 1) evalcousot9bb3in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9stop(Ar_0, Ar_1, Ar_2, Ar_3)) [ -Ar_2 + Ar_3 >= 0 /\ -Ar_2 >= 0 ] start location: koat_start leaf cost: 0 Repeatedly propagating knowledge in problem 7 produces the following problem: 8: T: (Comp: 1, Cost: 0) koat_start(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9start(Ar_0, Ar_1, Ar_2, Ar_3)) [ 0 <= 0 ] (Comp: 1, Cost: 1) evalcousot9start(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot90(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot90(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot91(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot91(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot92(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot92(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot93(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot93(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot94(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot94(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot95(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot95(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot96(Ar_0, Ar_1, Ar_2, Ar_3)) (Comp: 1, Cost: 1) evalcousot96(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_1, Ar_1, Ar_3, Ar_3)) (Comp: Ar_3 + Ar_3^2 + Ar_1 + 1, Cost: 1) evalcousot9bb1in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3)) [ -Ar_2 + Ar_3 >= 0 /\ Ar_2 >= 1 ] (Comp: 2, Cost: 1) evalcousot9bb1in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb3in(Ar_0, Ar_1, Ar_2, Ar_3)) [ -Ar_2 + Ar_3 >= 0 /\ 0 >= Ar_2 ] (Comp: Ar_3^2 + Ar_1, Cost: 1) evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_0 - 1, Ar_1, Ar_2, Ar_3)) [ Ar_3 - 1 >= 0 /\ Ar_2 + Ar_3 - 2 >= 0 /\ -Ar_2 + Ar_3 >= 0 /\ Ar_2 - 1 >= 0 /\ Ar_0 >= 1 ] (Comp: Ar_3, Cost: 1) evalcousot9bb2in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_3, Ar_1, Ar_2 - 1, Ar_3)) [ Ar_3 - 1 >= 0 /\ Ar_2 + Ar_3 - 2 >= 0 /\ -Ar_2 + Ar_3 >= 0 /\ Ar_2 - 1 >= 0 /\ 0 >= Ar_0 ] (Comp: 2, Cost: 1) evalcousot9bb3in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9stop(Ar_0, Ar_1, Ar_2, Ar_3)) [ -Ar_2 + Ar_3 >= 0 /\ -Ar_2 >= 0 ] start location: koat_start leaf cost: 0 Complexity upper bound 2*Ar_3 + 2*Ar_3^2 + 2*Ar_1 + 14 Time: 0.230 sec (SMT: 0.185 sec) ---------------------------------------- (2) BOUNDS(1, n^2) ---------------------------------------- (3) Loat Proof (FINISHED) ### Pre-processing the ITS problem ### Initial linear ITS problem Start location: evalcousot9start 0: evalcousot9start -> evalcousot9bb0in : [], cost: 1 1: evalcousot9bb0in -> evalcousot90 : [], cost: 1 2: evalcousot90 -> evalcousot91 : [], cost: 1 3: evalcousot91 -> evalcousot92 : [], cost: 1 4: evalcousot92 -> evalcousot93 : [], cost: 1 5: evalcousot93 -> evalcousot94 : [], cost: 1 6: evalcousot94 -> evalcousot95 : [], cost: 1 7: evalcousot95 -> evalcousot96 : [], cost: 1 8: evalcousot96 -> evalcousot9bb1in : A'=B, C'=D, [], cost: 1 9: evalcousot9bb1in -> evalcousot9bb2in : [ C>=1 ], cost: 1 10: evalcousot9bb1in -> evalcousot9bb3in : [ 0>=C ], cost: 1 11: evalcousot9bb2in -> evalcousot9bb1in : A'=-1+A, [ A>=1 ], cost: 1 12: evalcousot9bb2in -> evalcousot9bb1in : A'=D, [ A>=1 && 0>=A ], cost: 1 13: evalcousot9bb2in -> evalcousot9bb1in : A'=-1+A, C'=-1+C, [ 0>=A && A>=1 ], cost: 1 14: evalcousot9bb2in -> evalcousot9bb1in : A'=D, C'=-1+C, [ 0>=A ], cost: 1 15: evalcousot9bb3in -> evalcousot9stop : [], cost: 1 Checking for constant complexity: The following rule is satisfiable with cost >= 1, yielding constant complexity: 0: evalcousot9start -> evalcousot9bb0in : [], cost: 1 Removed unreachable and leaf rules: Start location: evalcousot9start 0: evalcousot9start -> evalcousot9bb0in : [], cost: 1 1: evalcousot9bb0in -> evalcousot90 : [], cost: 1 2: evalcousot90 -> evalcousot91 : [], cost: 1 3: evalcousot91 -> evalcousot92 : [], cost: 1 4: evalcousot92 -> evalcousot93 : [], cost: 1 5: evalcousot93 -> evalcousot94 : [], cost: 1 6: evalcousot94 -> evalcousot95 : [], cost: 1 7: evalcousot95 -> evalcousot96 : [], cost: 1 8: evalcousot96 -> evalcousot9bb1in : A'=B, C'=D, [], cost: 1 9: evalcousot9bb1in -> evalcousot9bb2in : [ C>=1 ], cost: 1 11: evalcousot9bb2in -> evalcousot9bb1in : A'=-1+A, [ A>=1 ], cost: 1 12: evalcousot9bb2in -> evalcousot9bb1in : A'=D, [ A>=1 && 0>=A ], cost: 1 13: evalcousot9bb2in -> evalcousot9bb1in : A'=-1+A, C'=-1+C, [ 0>=A && A>=1 ], cost: 1 14: evalcousot9bb2in -> evalcousot9bb1in : A'=D, C'=-1+C, [ 0>=A ], cost: 1 Removed rules with unsatisfiable guard: Start location: evalcousot9start 0: evalcousot9start -> evalcousot9bb0in : [], cost: 1 1: evalcousot9bb0in -> evalcousot90 : [], cost: 1 2: evalcousot90 -> evalcousot91 : [], cost: 1 3: evalcousot91 -> evalcousot92 : [], cost: 1 4: evalcousot92 -> evalcousot93 : [], cost: 1 5: evalcousot93 -> evalcousot94 : [], cost: 1 6: evalcousot94 -> evalcousot95 : [], cost: 1 7: evalcousot95 -> evalcousot96 : [], cost: 1 8: evalcousot96 -> evalcousot9bb1in : A'=B, C'=D, [], cost: 1 9: evalcousot9bb1in -> evalcousot9bb2in : [ C>=1 ], cost: 1 11: evalcousot9bb2in -> evalcousot9bb1in : A'=-1+A, [ A>=1 ], cost: 1 14: evalcousot9bb2in -> evalcousot9bb1in : A'=D, C'=-1+C, [ 0>=A ], cost: 1 ### Simplification by acceleration and chaining ### Eliminated locations (on linear paths): Start location: evalcousot9start 23: evalcousot9start -> evalcousot9bb1in : A'=B, C'=D, [], cost: 9 9: evalcousot9bb1in -> evalcousot9bb2in : [ C>=1 ], cost: 1 11: evalcousot9bb2in -> evalcousot9bb1in : A'=-1+A, [ A>=1 ], cost: 1 14: evalcousot9bb2in -> evalcousot9bb1in : A'=D, C'=-1+C, [ 0>=A ], cost: 1 Eliminated locations (on tree-shaped paths): Start location: evalcousot9start 23: evalcousot9start -> evalcousot9bb1in : A'=B, C'=D, [], cost: 9 24: evalcousot9bb1in -> evalcousot9bb1in : A'=-1+A, [ C>=1 && A>=1 ], cost: 2 25: evalcousot9bb1in -> evalcousot9bb1in : A'=D, C'=-1+C, [ C>=1 && 0>=A ], cost: 2 Accelerating simple loops of location 9. Accelerating the following rules: 24: evalcousot9bb1in -> evalcousot9bb1in : A'=-1+A, [ C>=1 && A>=1 ], cost: 2 25: evalcousot9bb1in -> evalcousot9bb1in : A'=D, C'=-1+C, [ C>=1 && 0>=A ], cost: 2 Accelerated rule 24 with metering function A, yielding the new rule 26. Accelerated rule 25 with metering function C (after strengthening guard), yielding the new rule 27. Nested simple loops 25 (outer loop) and 26 (inner loop) with metering function -1+C, resulting in the new rules: 28, 29. Removing the simple loops: 24 25. Accelerated all simple loops using metering functions (where possible): Start location: evalcousot9start 23: evalcousot9start -> evalcousot9bb1in : A'=B, C'=D, [], cost: 9 26: evalcousot9bb1in -> evalcousot9bb1in : A'=0, [ C>=1 && A>=1 ], cost: 2*A 27: evalcousot9bb1in -> evalcousot9bb1in : A'=D, C'=0, [ C>=1 && 0>=A && 0>=D ], cost: 2*C 28: evalcousot9bb1in -> evalcousot9bb1in : A'=0, C'=1, [ 0>=A && -1+C>=1 && D>=1 ], cost: -2+2*D*(-1+C)+2*C 29: evalcousot9bb1in -> evalcousot9bb1in : A'=0, C'=1, [ A>=1 && -1+C>=1 && D>=1 ], cost: -2+2*D*(-1+C)+2*C+2*A Chained accelerated rules (with incoming rules): Start location: evalcousot9start 23: evalcousot9start -> evalcousot9bb1in : A'=B, C'=D, [], cost: 9 30: evalcousot9start -> evalcousot9bb1in : A'=0, C'=D, [ D>=1 && B>=1 ], cost: 9+2*B 31: evalcousot9start -> evalcousot9bb1in : A'=0, C'=1, [ 0>=B && -1+D>=1 ], cost: 7+2*D+2*(-1+D)*D 32: evalcousot9start -> evalcousot9bb1in : A'=0, C'=1, [ B>=1 && -1+D>=1 ], cost: 7+2*D+2*(-1+D)*D+2*B Removed unreachable locations (and leaf rules with constant cost): Start location: evalcousot9start 30: evalcousot9start -> evalcousot9bb1in : A'=0, C'=D, [ D>=1 && B>=1 ], cost: 9+2*B 31: evalcousot9start -> evalcousot9bb1in : A'=0, C'=1, [ 0>=B && -1+D>=1 ], cost: 7+2*D+2*(-1+D)*D 32: evalcousot9start -> evalcousot9bb1in : A'=0, C'=1, [ B>=1 && -1+D>=1 ], cost: 7+2*D+2*(-1+D)*D+2*B ### Computing asymptotic complexity ### Fully simplified ITS problem Start location: evalcousot9start 30: evalcousot9start -> evalcousot9bb1in : A'=0, C'=D, [ D>=1 && B>=1 ], cost: 9+2*B 31: evalcousot9start -> evalcousot9bb1in : A'=0, C'=1, [ 0>=B && -1+D>=1 ], cost: 7+2*D+2*(-1+D)*D 32: evalcousot9start -> evalcousot9bb1in : A'=0, C'=1, [ B>=1 && -1+D>=1 ], cost: 7+2*D+2*(-1+D)*D+2*B Computing asymptotic complexity for rule 30 Solved the limit problem by the following transformations: Created initial limit problem: D (+/+!), 9+2*B (+), B (+/+!) [not solved] removing all constraints (solved by SMT) resulting limit problem: [solved] applying transformation rule (C) using substitution {D==1,B==n} resulting limit problem: [solved] Solution: D / 1 B / n Resulting cost 9+2*n has complexity: Poly(n^1) Found new complexity Poly(n^1). Computing asymptotic complexity for rule 31 Solved the limit problem by the following transformations: Created initial limit problem: -1+D (+/+!), 1-B (+/+!), 7+2*D^2 (+) [not solved] removing all constraints (solved by SMT) resulting limit problem: [solved] applying transformation rule (C) using substitution {D==n,B==-n} resulting limit problem: [solved] Solution: D / n B / -n Resulting cost 7+2*n^2 has complexity: Poly(n^2) Found new complexity Poly(n^2). Obtained the following overall complexity (w.r.t. the length of the input n): Complexity: Poly(n^2) Cpx degree: 2 Solved cost: 7+2*n^2 Rule cost: 7+2*D+2*(-1+D)*D Rule guard: [ 0>=B && -1+D>=1 ] WORST_CASE(Omega(n^2),?) ---------------------------------------- (4) BOUNDS(n^2, INF)