/export/starexec/sandbox/solver/bin/starexec_run_c_complexity /export/starexec/sandbox/benchmark/theBenchmark.c /export/starexec/sandbox/output/output_files -------------------------------------------------------------------------------- WORST_CASE(?, O(n^2)) proof of /export/starexec/sandbox/output/output_files/bench.koat # AProVE Commit ID: 794c25de1cacf0d048858bcd21c9a779e1221865 marcel 20200619 unpublished dirty The runtime complexity of the given CpxIntTrs could be proven to be BOUNDS(1, n^2). (0) CpxIntTrs (1) Koat Proof [FINISHED, 188 ms] (2) BOUNDS(1, n^2) ---------------------------------------- (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_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 + 7) 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(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) evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_1, Ar_1, Ar_3, 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) evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_1, Ar_1, Ar_3, 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(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) evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_1, Ar_1, Ar_3, 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(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(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(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("evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_1, Ar_1, Ar_3, Ar_3))", 0-0) = Ar_1 S("evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_1, Ar_1, Ar_3, Ar_3))", 0-1) = Ar_1 S("evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_1, Ar_1, Ar_3, Ar_3))", 0-2) = Ar_3 S("evalcousot9bb0in(Ar_0, Ar_1, Ar_2, Ar_3) -> Com_1(evalcousot9bb1in(Ar_1, Ar_1, Ar_3, 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(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(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 + 7 Time: 0.149 sec (SMT: 0.118 sec) ---------------------------------------- (2) BOUNDS(1, n^2)