MAYBE * Step 1: UnsatPaths MAYBE + Considered Problem: Rules: 0. eval_loops_start(v_n,v_x_0,v_y_0) -> eval_loops_bb0_in(v_n,v_x_0,v_y_0) True (1,1) 1. eval_loops_bb0_in(v_n,v_x_0,v_y_0) -> eval_loops_0(v_n,v_x_0,v_y_0) True (?,1) 2. eval_loops_0(v_n,v_x_0,v_y_0) -> eval_loops_1(v_n,v_x_0,v_y_0) True (?,1) 3. eval_loops_1(v_n,v_x_0,v_y_0) -> eval_loops_2(v_n,v_x_0,v_y_0) True (?,1) 4. eval_loops_2(v_n,v_x_0,v_y_0) -> eval_loops_bb1_in(v_n,v_n,v_y_0) [v_n >= 0] (?,1) 5. eval_loops_2(v_n,v_x_0,v_y_0) -> eval_loops_bb6_in(v_n,v_x_0,v_y_0) [-1 >= v_n] (?,1) 6. eval_loops_bb1_in(v_n,v_x_0,v_y_0) -> eval_loops_bb2_in(v_n,v_x_0,v_y_0) [v_x_0 >= 0] (?,1) 7. eval_loops_bb1_in(v_n,v_x_0,v_y_0) -> eval_loops_bb6_in(v_n,v_x_0,v_y_0) [-1 >= v_x_0] (?,1) 8. eval_loops_bb2_in(v_n,v_x_0,v_y_0) -> eval_loops_bb3_in(v_n,v_x_0,1) [-1 + v_x_0 >= 1] (?,1) 9. eval_loops_bb2_in(v_n,v_x_0,v_y_0) -> eval_loops_bb5_in(v_n,v_x_0,v_y_0) [1 >= v_x_0] (?,1) 10. eval_loops_bb3_in(v_n,v_x_0,v_y_0) -> eval_loops_bb4_in(v_n,v_x_0,v_y_0) [-1 + v_x_0 >= v_y_0] (?,1) 11. eval_loops_bb3_in(v_n,v_x_0,v_y_0) -> eval_loops_bb5_in(v_n,v_x_0,v_y_0) [v_y_0 >= v_x_0] (?,1) 12. eval_loops_bb4_in(v_n,v_x_0,v_y_0) -> eval_loops_bb3_in(v_n,v_x_0,2*v_y_0) True (?,1) 13. eval_loops_bb5_in(v_n,v_x_0,v_y_0) -> eval_loops_bb1_in(v_n,-1 + v_x_0,v_y_0) True (?,1) 14. eval_loops_bb6_in(v_n,v_x_0,v_y_0) -> eval_loops_stop(v_n,v_x_0,v_y_0) True (?,1) Signature: {(eval_loops_0,3) ;(eval_loops_1,3) ;(eval_loops_2,3) ;(eval_loops_bb0_in,3) ;(eval_loops_bb1_in,3) ;(eval_loops_bb2_in,3) ;(eval_loops_bb3_in,3) ;(eval_loops_bb4_in,3) ;(eval_loops_bb5_in,3) ;(eval_loops_bb6_in,3) ;(eval_loops_start,3) ;(eval_loops_stop,3)} Flow Graph: [0->{1},1->{2},2->{3},3->{4,5},4->{6,7},5->{14},6->{8,9},7->{14},8->{10,11},9->{13},10->{12},11->{13} ,12->{10,11},13->{6,7},14->{}] + Applied Processor: UnsatPaths + Details: We remove following edges from the transition graph: [(4,7),(8,11)] * Step 2: FromIts MAYBE + Considered Problem: Rules: 0. eval_loops_start(v_n,v_x_0,v_y_0) -> eval_loops_bb0_in(v_n,v_x_0,v_y_0) True (1,1) 1. eval_loops_bb0_in(v_n,v_x_0,v_y_0) -> eval_loops_0(v_n,v_x_0,v_y_0) True (?,1) 2. eval_loops_0(v_n,v_x_0,v_y_0) -> eval_loops_1(v_n,v_x_0,v_y_0) True (?,1) 3. eval_loops_1(v_n,v_x_0,v_y_0) -> eval_loops_2(v_n,v_x_0,v_y_0) True (?,1) 4. eval_loops_2(v_n,v_x_0,v_y_0) -> eval_loops_bb1_in(v_n,v_n,v_y_0) [v_n >= 0] (?,1) 5. eval_loops_2(v_n,v_x_0,v_y_0) -> eval_loops_bb6_in(v_n,v_x_0,v_y_0) [-1 >= v_n] (?,1) 6. eval_loops_bb1_in(v_n,v_x_0,v_y_0) -> eval_loops_bb2_in(v_n,v_x_0,v_y_0) [v_x_0 >= 0] (?,1) 7. eval_loops_bb1_in(v_n,v_x_0,v_y_0) -> eval_loops_bb6_in(v_n,v_x_0,v_y_0) [-1 >= v_x_0] (?,1) 8. eval_loops_bb2_in(v_n,v_x_0,v_y_0) -> eval_loops_bb3_in(v_n,v_x_0,1) [-1 + v_x_0 >= 1] (?,1) 9. eval_loops_bb2_in(v_n,v_x_0,v_y_0) -> eval_loops_bb5_in(v_n,v_x_0,v_y_0) [1 >= v_x_0] (?,1) 10. eval_loops_bb3_in(v_n,v_x_0,v_y_0) -> eval_loops_bb4_in(v_n,v_x_0,v_y_0) [-1 + v_x_0 >= v_y_0] (?,1) 11. eval_loops_bb3_in(v_n,v_x_0,v_y_0) -> eval_loops_bb5_in(v_n,v_x_0,v_y_0) [v_y_0 >= v_x_0] (?,1) 12. eval_loops_bb4_in(v_n,v_x_0,v_y_0) -> eval_loops_bb3_in(v_n,v_x_0,2*v_y_0) True (?,1) 13. eval_loops_bb5_in(v_n,v_x_0,v_y_0) -> eval_loops_bb1_in(v_n,-1 + v_x_0,v_y_0) True (?,1) 14. eval_loops_bb6_in(v_n,v_x_0,v_y_0) -> eval_loops_stop(v_n,v_x_0,v_y_0) True (?,1) Signature: {(eval_loops_0,3) ;(eval_loops_1,3) ;(eval_loops_2,3) ;(eval_loops_bb0_in,3) ;(eval_loops_bb1_in,3) ;(eval_loops_bb2_in,3) ;(eval_loops_bb3_in,3) ;(eval_loops_bb4_in,3) ;(eval_loops_bb5_in,3) ;(eval_loops_bb6_in,3) ;(eval_loops_start,3) ;(eval_loops_stop,3)} Flow Graph: [0->{1},1->{2},2->{3},3->{4,5},4->{6},5->{14},6->{8,9},7->{14},8->{10},9->{13},10->{12},11->{13},12->{10 ,11},13->{6,7},14->{}] + Applied Processor: FromIts + Details: () * Step 3: Unfold MAYBE + Considered Problem: Rules: eval_loops_start(v_n,v_x_0,v_y_0) -> eval_loops_bb0_in(v_n,v_x_0,v_y_0) True eval_loops_bb0_in(v_n,v_x_0,v_y_0) -> eval_loops_0(v_n,v_x_0,v_y_0) True eval_loops_0(v_n,v_x_0,v_y_0) -> eval_loops_1(v_n,v_x_0,v_y_0) True eval_loops_1(v_n,v_x_0,v_y_0) -> eval_loops_2(v_n,v_x_0,v_y_0) True eval_loops_2(v_n,v_x_0,v_y_0) -> eval_loops_bb1_in(v_n,v_n,v_y_0) [v_n >= 0] eval_loops_2(v_n,v_x_0,v_y_0) -> eval_loops_bb6_in(v_n,v_x_0,v_y_0) [-1 >= v_n] eval_loops_bb1_in(v_n,v_x_0,v_y_0) -> eval_loops_bb2_in(v_n,v_x_0,v_y_0) [v_x_0 >= 0] eval_loops_bb1_in(v_n,v_x_0,v_y_0) -> eval_loops_bb6_in(v_n,v_x_0,v_y_0) [-1 >= v_x_0] eval_loops_bb2_in(v_n,v_x_0,v_y_0) -> eval_loops_bb3_in(v_n,v_x_0,1) [-1 + v_x_0 >= 1] eval_loops_bb2_in(v_n,v_x_0,v_y_0) -> eval_loops_bb5_in(v_n,v_x_0,v_y_0) [1 >= v_x_0] eval_loops_bb3_in(v_n,v_x_0,v_y_0) -> eval_loops_bb4_in(v_n,v_x_0,v_y_0) [-1 + v_x_0 >= v_y_0] eval_loops_bb3_in(v_n,v_x_0,v_y_0) -> eval_loops_bb5_in(v_n,v_x_0,v_y_0) [v_y_0 >= v_x_0] eval_loops_bb4_in(v_n,v_x_0,v_y_0) -> eval_loops_bb3_in(v_n,v_x_0,2*v_y_0) True eval_loops_bb5_in(v_n,v_x_0,v_y_0) -> eval_loops_bb1_in(v_n,-1 + v_x_0,v_y_0) True eval_loops_bb6_in(v_n,v_x_0,v_y_0) -> eval_loops_stop(v_n,v_x_0,v_y_0) True Signature: {(eval_loops_0,3) ;(eval_loops_1,3) ;(eval_loops_2,3) ;(eval_loops_bb0_in,3) ;(eval_loops_bb1_in,3) ;(eval_loops_bb2_in,3) ;(eval_loops_bb3_in,3) ;(eval_loops_bb4_in,3) ;(eval_loops_bb5_in,3) ;(eval_loops_bb6_in,3) ;(eval_loops_start,3) ;(eval_loops_stop,3)} Rule Graph: [0->{1},1->{2},2->{3},3->{4,5},4->{6},5->{14},6->{8,9},7->{14},8->{10},9->{13},10->{12},11->{13},12->{10 ,11},13->{6,7},14->{}] + Applied Processor: Unfold + Details: () * Step 4: AddSinks MAYBE + Considered Problem: Rules: eval_loops_start.0(v_n,v_x_0,v_y_0) -> eval_loops_bb0_in.1(v_n,v_x_0,v_y_0) True eval_loops_bb0_in.1(v_n,v_x_0,v_y_0) -> eval_loops_0.2(v_n,v_x_0,v_y_0) True eval_loops_0.2(v_n,v_x_0,v_y_0) -> eval_loops_1.3(v_n,v_x_0,v_y_0) True eval_loops_1.3(v_n,v_x_0,v_y_0) -> eval_loops_2.4(v_n,v_x_0,v_y_0) True eval_loops_1.3(v_n,v_x_0,v_y_0) -> eval_loops_2.5(v_n,v_x_0,v_y_0) True eval_loops_2.4(v_n,v_x_0,v_y_0) -> eval_loops_bb1_in.6(v_n,v_n,v_y_0) [v_n >= 0] eval_loops_2.5(v_n,v_x_0,v_y_0) -> eval_loops_bb6_in.14(v_n,v_x_0,v_y_0) [-1 >= v_n] eval_loops_bb1_in.6(v_n,v_x_0,v_y_0) -> eval_loops_bb2_in.8(v_n,v_x_0,v_y_0) [v_x_0 >= 0] eval_loops_bb1_in.6(v_n,v_x_0,v_y_0) -> eval_loops_bb2_in.9(v_n,v_x_0,v_y_0) [v_x_0 >= 0] eval_loops_bb1_in.7(v_n,v_x_0,v_y_0) -> eval_loops_bb6_in.14(v_n,v_x_0,v_y_0) [-1 >= v_x_0] eval_loops_bb2_in.8(v_n,v_x_0,v_y_0) -> eval_loops_bb3_in.10(v_n,v_x_0,1) [-1 + v_x_0 >= 1] eval_loops_bb2_in.9(v_n,v_x_0,v_y_0) -> eval_loops_bb5_in.13(v_n,v_x_0,v_y_0) [1 >= v_x_0] eval_loops_bb3_in.10(v_n,v_x_0,v_y_0) -> eval_loops_bb4_in.12(v_n,v_x_0,v_y_0) [-1 + v_x_0 >= v_y_0] eval_loops_bb3_in.11(v_n,v_x_0,v_y_0) -> eval_loops_bb5_in.13(v_n,v_x_0,v_y_0) [v_y_0 >= v_x_0] eval_loops_bb4_in.12(v_n,v_x_0,v_y_0) -> eval_loops_bb3_in.10(v_n,v_x_0,2*v_y_0) True eval_loops_bb4_in.12(v_n,v_x_0,v_y_0) -> eval_loops_bb3_in.11(v_n,v_x_0,2*v_y_0) True eval_loops_bb5_in.13(v_n,v_x_0,v_y_0) -> eval_loops_bb1_in.6(v_n,-1 + v_x_0,v_y_0) True eval_loops_bb5_in.13(v_n,v_x_0,v_y_0) -> eval_loops_bb1_in.7(v_n,-1 + v_x_0,v_y_0) True eval_loops_bb6_in.14(v_n,v_x_0,v_y_0) -> eval_loops_stop.15(v_n,v_x_0,v_y_0) True Signature: {(eval_loops_0.2,3) ;(eval_loops_1.3,3) ;(eval_loops_2.4,3) ;(eval_loops_2.5,3) ;(eval_loops_bb0_in.1,3) ;(eval_loops_bb1_in.6,3) ;(eval_loops_bb1_in.7,3) ;(eval_loops_bb2_in.8,3) ;(eval_loops_bb2_in.9,3) ;(eval_loops_bb3_in.10,3) ;(eval_loops_bb3_in.11,3) ;(eval_loops_bb4_in.12,3) ;(eval_loops_bb5_in.13,3) ;(eval_loops_bb6_in.14,3) ;(eval_loops_start.0,3) ;(eval_loops_stop.15,3)} Rule Graph: [0->{1},1->{2},2->{3,4},3->{5},4->{6},5->{7,8},6->{18},7->{10},8->{11},9->{18},10->{12},11->{16,17} ,12->{14,15},13->{16,17},14->{12},15->{13},16->{7,8},17->{9},18->{}] + Applied Processor: AddSinks + Details: () * Step 5: Failure MAYBE + Considered Problem: Rules: eval_loops_start.0(v_n,v_x_0,v_y_0) -> eval_loops_bb0_in.1(v_n,v_x_0,v_y_0) True eval_loops_bb0_in.1(v_n,v_x_0,v_y_0) -> eval_loops_0.2(v_n,v_x_0,v_y_0) True eval_loops_0.2(v_n,v_x_0,v_y_0) -> eval_loops_1.3(v_n,v_x_0,v_y_0) True eval_loops_1.3(v_n,v_x_0,v_y_0) -> eval_loops_2.4(v_n,v_x_0,v_y_0) True eval_loops_1.3(v_n,v_x_0,v_y_0) -> eval_loops_2.5(v_n,v_x_0,v_y_0) True eval_loops_2.4(v_n,v_x_0,v_y_0) -> eval_loops_bb1_in.6(v_n,v_n,v_y_0) [v_n >= 0] eval_loops_2.5(v_n,v_x_0,v_y_0) -> eval_loops_bb6_in.14(v_n,v_x_0,v_y_0) [-1 >= v_n] eval_loops_bb1_in.6(v_n,v_x_0,v_y_0) -> eval_loops_bb2_in.8(v_n,v_x_0,v_y_0) [v_x_0 >= 0] eval_loops_bb1_in.6(v_n,v_x_0,v_y_0) -> eval_loops_bb2_in.9(v_n,v_x_0,v_y_0) [v_x_0 >= 0] eval_loops_bb1_in.7(v_n,v_x_0,v_y_0) -> eval_loops_bb6_in.14(v_n,v_x_0,v_y_0) [-1 >= v_x_0] eval_loops_bb2_in.8(v_n,v_x_0,v_y_0) -> eval_loops_bb3_in.10(v_n,v_x_0,1) [-1 + v_x_0 >= 1] eval_loops_bb2_in.9(v_n,v_x_0,v_y_0) -> eval_loops_bb5_in.13(v_n,v_x_0,v_y_0) [1 >= v_x_0] eval_loops_bb3_in.10(v_n,v_x_0,v_y_0) -> eval_loops_bb4_in.12(v_n,v_x_0,v_y_0) [-1 + v_x_0 >= v_y_0] eval_loops_bb3_in.11(v_n,v_x_0,v_y_0) -> eval_loops_bb5_in.13(v_n,v_x_0,v_y_0) [v_y_0 >= v_x_0] eval_loops_bb4_in.12(v_n,v_x_0,v_y_0) -> eval_loops_bb3_in.10(v_n,v_x_0,2*v_y_0) True eval_loops_bb4_in.12(v_n,v_x_0,v_y_0) -> eval_loops_bb3_in.11(v_n,v_x_0,2*v_y_0) True eval_loops_bb5_in.13(v_n,v_x_0,v_y_0) -> eval_loops_bb1_in.6(v_n,-1 + v_x_0,v_y_0) True eval_loops_bb5_in.13(v_n,v_x_0,v_y_0) -> eval_loops_bb1_in.7(v_n,-1 + v_x_0,v_y_0) True eval_loops_bb6_in.14(v_n,v_x_0,v_y_0) -> eval_loops_stop.15(v_n,v_x_0,v_y_0) True eval_loops_stop.15(v_n,v_x_0,v_y_0) -> exitus616(v_n,v_x_0,v_y_0) True eval_loops_stop.15(v_n,v_x_0,v_y_0) -> exitus616(v_n,v_x_0,v_y_0) True Signature: {(eval_loops_0.2,3) ;(eval_loops_1.3,3) ;(eval_loops_2.4,3) ;(eval_loops_2.5,3) ;(eval_loops_bb0_in.1,3) ;(eval_loops_bb1_in.6,3) ;(eval_loops_bb1_in.7,3) ;(eval_loops_bb2_in.8,3) ;(eval_loops_bb2_in.9,3) ;(eval_loops_bb3_in.10,3) ;(eval_loops_bb3_in.11,3) ;(eval_loops_bb4_in.12,3) ;(eval_loops_bb5_in.13,3) ;(eval_loops_bb6_in.14,3) ;(eval_loops_start.0,3) ;(eval_loops_stop.15,3) ;(exitus616,3)} Rule Graph: [0->{1},1->{2},2->{3,4},3->{5},4->{6},5->{7,8},6->{18},7->{10},8->{11},9->{18},10->{12},11->{16,17} ,12->{14,15},13->{16,17},14->{12},15->{13},16->{7,8},17->{9},18->{19,20}] + Applied Processor: Decompose Greedy + Details: We construct a looptree: P: [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20] | `- p:[7,16,11,8,13,15,12,10,14] c: [7,8,10,11,13,15,16] | `- p:[12,14] c: [] MAYBE