NO ### Pre-processing the ITS problem ### Initial linear ITS problem Start location: __init 0: f1 -> f2 : arg1'=arg1P_1, [], cost: 1 7: f2 -> f3 : arg1'=arg1P_8, [ arg1==arg1P_8 ], cost: 1 1: f4 -> f7 : arg1'=arg1P_2, [ arg1P_2==-1+arg1 ], cost: 1 5: f7 -> f6 : arg1'=arg1P_6, [ arg1==arg1P_6 ], cost: 1 2: f5 -> f8 : arg1'=arg1P_3, [ arg1P_3==1+arg1 ], cost: 1 6: f8 -> f6 : arg1'=arg1P_7, [ arg1==arg1P_7 ], cost: 1 3: f3 -> f4 : arg1'=arg1P_4, [ arg1<=0 && arg1==arg1P_4 ], cost: 1 4: f3 -> f5 : arg1'=arg1P_5, [ arg1>0 && arg1==arg1P_5 ], cost: 1 8: f6 -> f2 : arg1'=arg1P_9, [ arg1==arg1P_9 ], cost: 1 9: __init -> f1 : arg1'=arg1P_10, [], cost: 1 Checking for constant complexity: The following rule is satisfiable with cost >= 1, yielding constant complexity: 9: __init -> f1 : arg1'=arg1P_10, [], cost: 1 Simplified all rules, resulting in: Start location: __init 0: f1 -> f2 : arg1'=arg1P_1, [], cost: 1 7: f2 -> f3 : [], cost: 1 1: f4 -> f7 : arg1'=-1+arg1, [], cost: 1 5: f7 -> f6 : [], cost: 1 2: f5 -> f8 : arg1'=1+arg1, [], cost: 1 6: f8 -> f6 : [], cost: 1 3: f3 -> f4 : [ arg1<=0 ], cost: 1 4: f3 -> f5 : [ arg1>0 ], cost: 1 8: f6 -> f2 : [], cost: 1 9: __init -> f1 : arg1'=arg1P_10, [], cost: 1 ### Simplification by acceleration and chaining ### Eliminated locations (on linear paths): Start location: __init 7: f2 -> f3 : [], cost: 1 13: f3 -> f6 : arg1'=-1+arg1, [ arg1<=0 ], cost: 3 14: f3 -> f6 : arg1'=1+arg1, [ arg1>0 ], cost: 3 8: f6 -> f2 : [], cost: 1 10: __init -> f2 : arg1'=arg1P_1, [], cost: 2 Eliminated locations (on tree-shaped paths): Start location: __init 15: f2 -> f6 : arg1'=-1+arg1, [ arg1<=0 ], cost: 4 16: f2 -> f6 : arg1'=1+arg1, [ arg1>0 ], cost: 4 8: f6 -> f2 : [], cost: 1 10: __init -> f2 : arg1'=arg1P_1, [], cost: 2 Eliminated locations (on tree-shaped paths): Start location: __init 17: f2 -> f2 : arg1'=-1+arg1, [ arg1<=0 ], cost: 5 18: f2 -> f2 : arg1'=1+arg1, [ arg1>0 ], cost: 5 10: __init -> f2 : arg1'=arg1P_1, [], cost: 2 Accelerating simple loops of location 1. Accelerating the following rules: 17: f2 -> f2 : arg1'=-1+arg1, [ arg1<=0 ], cost: 5 18: f2 -> f2 : arg1'=1+arg1, [ arg1>0 ], cost: 5 Accelerated rule 17 with non-termination, yielding the new rule 19. Accelerated rule 18 with non-termination, yielding the new rule 20. [accelerate] Nesting with 0 inner and 0 outer candidates Removing the simple loops: 17 18. Accelerated all simple loops using metering functions (where possible): Start location: __init 19: f2 -> [9] : [ arg1<=0 ], cost: NONTERM 20: f2 -> [9] : [ arg1>0 ], cost: NONTERM 10: __init -> f2 : arg1'=arg1P_1, [], cost: 2 Chained accelerated rules (with incoming rules): Start location: __init 10: __init -> f2 : arg1'=arg1P_1, [], cost: 2 21: __init -> [9] : [], cost: NONTERM 22: __init -> [9] : [], cost: NONTERM Removed unreachable locations (and leaf rules with constant cost): Start location: __init 21: __init -> [9] : [], cost: NONTERM 22: __init -> [9] : [], cost: NONTERM ### Computing asymptotic complexity ### Fully simplified ITS problem Start location: __init 22: __init -> [9] : [], cost: NONTERM Computing asymptotic complexity for rule 22 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