NO ### Pre-processing the ITS problem ### Initial linear ITS problem Start location: __init 0: f1 -> f2 : arg1'=arg1P_1, arg2'=arg2P_1, [ arg1==arg1P_1 && 100==arg2P_1 ], cost: 1 1: f2 -> f3 : arg1'=arg1P_2, arg2'=arg2P_2, [ 0==arg1P_2 && arg2==arg2P_2 ], cost: 1 10: f3 -> f4 : arg1'=arg1P_11, arg2'=arg2P_11, [ arg1 f12 : arg1'=arg1P_13, arg2'=arg2P_13, [ arg1>=arg2 && arg1==arg1P_13 && arg2==arg2P_13 ], cost: 1 2: f5 -> f8 : arg1'=arg1P_3, arg2'=arg2P_3, [ arg1P_3==1+arg1 && arg2==arg2P_3 ], cost: 1 3: f8 -> f9 : arg1'=arg1P_4, arg2'=arg2P_4, [ arg2P_4==-1+arg2 && arg1==arg1P_4 ], cost: 1 8: f9 -> f7 : arg1'=arg1P_9, arg2'=arg2P_9, [ arg1==arg1P_9 && arg2==arg2P_9 ], cost: 1 4: f6 -> f10 : arg1'=arg1P_5, arg2'=arg2P_5, [ arg1P_5==-1+arg1 && arg2==arg2P_5 ], cost: 1 5: f10 -> f11 : arg1'=arg1P_6, arg2'=arg2P_6, [ arg2P_6==1+arg2 && arg1==arg1P_6 ], cost: 1 9: f11 -> f7 : arg1'=arg1P_10, arg2'=arg2P_10, [ arg1==arg1P_10 && arg2==arg2P_10 ], cost: 1 6: f4 -> f5 : arg1'=arg1P_7, arg2'=arg2P_7, [ 51 f6 : arg1'=arg1P_8, arg2'=arg2P_8, [ 51>=arg2 && arg1==arg1P_8 && arg2==arg2P_8 ], cost: 1 11: f7 -> f3 : arg1'=arg1P_12, arg2'=arg2P_12, [ arg1==arg1P_12 && arg2==arg2P_12 ], cost: 1 13: __init -> f1 : arg1'=arg1P_14, arg2'=arg2P_14, [], cost: 1 Checking for constant complexity: The following rule is satisfiable with cost >= 1, yielding constant complexity: 13: __init -> f1 : arg1'=arg1P_14, arg2'=arg2P_14, [], cost: 1 Removed unreachable and leaf rules: Start location: __init 0: f1 -> f2 : arg1'=arg1P_1, arg2'=arg2P_1, [ arg1==arg1P_1 && 100==arg2P_1 ], cost: 1 1: f2 -> f3 : arg1'=arg1P_2, arg2'=arg2P_2, [ 0==arg1P_2 && arg2==arg2P_2 ], cost: 1 10: f3 -> f4 : arg1'=arg1P_11, arg2'=arg2P_11, [ arg1 f8 : arg1'=arg1P_3, arg2'=arg2P_3, [ arg1P_3==1+arg1 && arg2==arg2P_3 ], cost: 1 3: f8 -> f9 : arg1'=arg1P_4, arg2'=arg2P_4, [ arg2P_4==-1+arg2 && arg1==arg1P_4 ], cost: 1 8: f9 -> f7 : arg1'=arg1P_9, arg2'=arg2P_9, [ arg1==arg1P_9 && arg2==arg2P_9 ], cost: 1 4: f6 -> f10 : arg1'=arg1P_5, arg2'=arg2P_5, [ arg1P_5==-1+arg1 && arg2==arg2P_5 ], cost: 1 5: f10 -> f11 : arg1'=arg1P_6, arg2'=arg2P_6, [ arg2P_6==1+arg2 && arg1==arg1P_6 ], cost: 1 9: f11 -> f7 : arg1'=arg1P_10, arg2'=arg2P_10, [ arg1==arg1P_10 && arg2==arg2P_10 ], cost: 1 6: f4 -> f5 : arg1'=arg1P_7, arg2'=arg2P_7, [ 51 f6 : arg1'=arg1P_8, arg2'=arg2P_8, [ 51>=arg2 && arg1==arg1P_8 && arg2==arg2P_8 ], cost: 1 11: f7 -> f3 : arg1'=arg1P_12, arg2'=arg2P_12, [ arg1==arg1P_12 && arg2==arg2P_12 ], cost: 1 13: __init -> f1 : arg1'=arg1P_14, arg2'=arg2P_14, [], cost: 1 Simplified all rules, resulting in: Start location: __init 0: f1 -> f2 : arg2'=100, [], cost: 1 1: f2 -> f3 : arg1'=0, [], cost: 1 10: f3 -> f4 : [ arg1 f8 : arg1'=1+arg1, [], cost: 1 3: f8 -> f9 : arg2'=-1+arg2, [], cost: 1 8: f9 -> f7 : [], cost: 1 4: f6 -> f10 : arg1'=-1+arg1, [], cost: 1 5: f10 -> f11 : arg2'=1+arg2, [], cost: 1 9: f11 -> f7 : [], cost: 1 6: f4 -> f5 : [ 51 f6 : [ 51>=arg2 ], cost: 1 11: f7 -> f3 : [], cost: 1 13: __init -> f1 : arg1'=arg1P_14, arg2'=arg2P_14, [], cost: 1 ### Simplification by acceleration and chaining ### Eliminated locations (on linear paths): Start location: __init 10: f3 -> f4 : [ arg1 f7 : arg1'=1+arg1, arg2'=-1+arg2, [ 51 f7 : arg1'=-1+arg1, arg2'=1+arg2, [ 51>=arg2 ], cost: 4 11: f7 -> f3 : [], cost: 1 15: __init -> f3 : arg1'=0, arg2'=100, [], cost: 3 Eliminated locations (on tree-shaped paths): Start location: __init 22: f3 -> f7 : arg1'=1+arg1, arg2'=-1+arg2, [ arg1 f7 : arg1'=-1+arg1, arg2'=1+arg2, [ arg1=arg2 ], cost: 5 11: f7 -> f3 : [], cost: 1 15: __init -> f3 : arg1'=0, arg2'=100, [], cost: 3 Eliminated locations (on tree-shaped paths): Start location: __init 24: f3 -> f3 : arg1'=1+arg1, arg2'=-1+arg2, [ arg1 f3 : arg1'=-1+arg1, arg2'=1+arg2, [ arg1=arg2 ], cost: 6 15: __init -> f3 : arg1'=0, arg2'=100, [], cost: 3 Accelerating simple loops of location 2. Accelerating the following rules: 24: f3 -> f3 : arg1'=1+arg1, arg2'=-1+arg2, [ arg1 f3 : arg1'=-1+arg1, arg2'=1+arg2, [ arg1=arg2 ], cost: 6 Accelerated rule 24 with backward acceleration, yielding the new rule 26. Accelerated rule 25 with backward acceleration, yielding the new rule 27. [accelerate] Nesting with 2 inner and 2 outer candidates Nested simple loops 25 (outer loop) and 26 (inner loop) with Rule(2 | -51+arg2>=0, -51+arg2+arg1<51, | NONTERM || 13 | ), resulting in the new rules: 28, 29. Nested simple loops 24 (outer loop) and 27 (inner loop) with Rule(2 | 51=0, k_2>=1, 1+arg1<51, | 12*k_2 || 2 | 0=arg1, 1=52, ), resulting in the new rules: 30, 31. Removing the simple loops: 24 25. Accelerated all simple loops using metering functions (where possible): Start location: __init 26: f3 -> f3 : arg1'=k+arg1, arg2'=-k+arg2, [ k>=0 && -1+k+arg1<1-k+arg2 && 51<1-k+arg2 ], cost: 6*k 27: f3 -> f3 : arg1'=-52+arg2+arg1, arg2'=52, [ arg1=0 ], cost: 312-6*arg2 28: f3 -> [13] : [ -51+arg2>=0 && -51+arg2+arg1<51 ], cost: NONTERM 29: f3 -> [13] : [ arg1=arg2 && -50+arg2>=0 && -51+arg2+arg1<51 ], cost: NONTERM 30: f3 -> f3 : arg1'=arg1, arg2'=52, [ 51=0 && k_2>=1 && 1+arg1<51 ], cost: 12*k_2 31: f3 -> f3 : arg1'=-52+arg2+arg1, arg2'=52, [ arg1=0 && k_2>=1 && -51+arg2+arg1<51 ], cost: 312-6*arg2+12*k_2 15: __init -> f3 : arg1'=0, arg2'=100, [], cost: 3 Chained accelerated rules (with incoming rules): Start location: __init 15: __init -> f3 : arg1'=0, arg2'=100, [], cost: 3 32: __init -> f3 : arg1'=k, arg2'=100-k, [ k>=0 && -1+k<101-k && 51<101-k ], cost: 3+6*k 33: __init -> [13] : [], cost: NONTERM Removed unreachable locations (and leaf rules with constant cost): Start location: __init 32: __init -> f3 : arg1'=k, arg2'=100-k, [ k>=0 && -1+k<101-k && 51<101-k ], cost: 3+6*k 33: __init -> [13] : [], cost: NONTERM ### Computing asymptotic complexity ### Fully simplified ITS problem Start location: __init 32: __init -> f3 : arg1'=k, arg2'=100-k, [ k>=0 && -1+k<101-k && 51<101-k ], cost: 3+6*k 33: __init -> [13] : [], cost: NONTERM Computing asymptotic complexity for rule 33 Guard is satisfiable, yielding nontermination Resulting cost NONTERM has complexity: Nonterm Found new complexity Nonterm. Obtained the following overall complexity (w.r.t. the length of the input n): Complexity: Nonterm Cpx degree: Nonterm Solved cost: NONTERM Rule cost: NONTERM Rule guard: [] NO