WORST_CASE(Omega(1),?) ### Pre-processing the ITS problem ### Initial linear ITS problem Start location: __init 0: f1 -> f2 : arg1'=arg1P_1, arg2'=arg2P_1, arg3'=arg3P_1, [ arg1==arg1P_1 && arg3==arg3P_1 ], cost: 1 1: f2 -> f3 : arg1'=arg1P_2, arg2'=arg2P_2, arg3'=arg3P_2, [ arg1==arg1P_2 && arg2==arg2P_2 ], cost: 1 2: f3 -> f4 : arg1'=arg1P_3, arg2'=arg2P_3, arg3'=arg3P_3, [ 0==arg1P_3 && arg2==arg2P_3 && arg3==arg3P_3 ], cost: 1 14: f4 -> f5 : arg1'=arg1P_15, arg2'=arg2P_15, arg3'=arg3P_15, [ arg2+arg3>0 && arg1==arg1P_15 && arg2==arg2P_15 && arg3==arg3P_15 ], cost: 1 16: f4 -> f15 : arg1'=arg1P_17, arg2'=arg2P_17, arg3'=arg3P_17, [ arg2+arg3<=0 && arg1==arg1P_17 && arg2==arg2P_17 && arg3==arg3P_17 ], cost: 1 3: f6 -> f9 : arg1'=arg1P_4, arg2'=arg2P_4, arg3'=arg3P_4, [ arg2P_4==-1+arg2 && arg1==arg1P_4 && arg3==arg3P_4 ], cost: 1 11: f9 -> f8 : arg1'=arg1P_12, arg2'=arg2P_12, arg3'=arg3P_12, [ arg1==arg1P_12 && arg2==arg2P_12 && arg3==arg3P_12 ], cost: 1 4: f10 -> f13 : arg1'=arg1P_5, arg2'=arg2P_5, arg3'=arg3P_5, [ arg3P_5==-1+arg3 && arg1==arg1P_5 && arg2==arg2P_5 ], cost: 1 7: f13 -> f12 : arg1'=arg1P_8, arg2'=arg2P_8, arg3'=arg3P_8, [ arg1==arg1P_8 && arg2==arg2P_8 && arg3==arg3P_8 ], cost: 1 5: f7 -> f10 : arg1'=arg1P_6, arg2'=arg2P_6, arg3'=arg3P_6, [ arg3>0 && arg1==arg1P_6 && arg2==arg2P_6 && arg3==arg3P_6 ], cost: 1 6: f7 -> f11 : arg1'=arg1P_7, arg2'=arg2P_7, arg3'=arg3P_7, [ arg3<=0 && arg1==arg1P_7 && arg2==arg2P_7 && arg3==arg3P_7 ], cost: 1 8: f11 -> f12 : arg1'=arg1P_9, arg2'=arg2P_9, arg3'=arg3P_9, [ arg1==arg1P_9 && arg2==arg2P_9 && arg3==arg3P_9 ], cost: 1 12: f12 -> f8 : arg1'=arg1P_13, arg2'=arg2P_13, arg3'=arg3P_13, [ arg1==arg1P_13 && arg2==arg2P_13 && arg3==arg3P_13 ], cost: 1 9: f5 -> f6 : arg1'=arg1P_10, arg2'=arg2P_10, arg3'=arg3P_10, [ arg2>0 && arg1==arg1P_10 && arg2==arg2P_10 && arg3==arg3P_10 ], cost: 1 10: f5 -> f7 : arg1'=arg1P_11, arg2'=arg2P_11, arg3'=arg3P_11, [ arg2<=0 && arg1==arg1P_11 && arg2==arg2P_11 && arg3==arg3P_11 ], cost: 1 13: f8 -> f14 : arg1'=arg1P_14, arg2'=arg2P_14, arg3'=arg3P_14, [ arg1P_14==1+arg1 && arg2==arg2P_14 && arg3==arg3P_14 ], cost: 1 15: f14 -> f4 : arg1'=arg1P_16, arg2'=arg2P_16, arg3'=arg3P_16, [ arg1==arg1P_16 && arg2==arg2P_16 && arg3==arg3P_16 ], cost: 1 17: __init -> f1 : arg1'=arg1P_18, arg2'=arg2P_18, arg3'=arg3P_18, [], cost: 1 Checking for constant complexity: The following rule is satisfiable with cost >= 1, yielding constant complexity: 17: __init -> f1 : arg1'=arg1P_18, arg2'=arg2P_18, arg3'=arg3P_18, [], cost: 1 Removed unreachable and leaf rules: Start location: __init 0: f1 -> f2 : arg1'=arg1P_1, arg2'=arg2P_1, arg3'=arg3P_1, [ arg1==arg1P_1 && arg3==arg3P_1 ], cost: 1 1: f2 -> f3 : arg1'=arg1P_2, arg2'=arg2P_2, arg3'=arg3P_2, [ arg1==arg1P_2 && arg2==arg2P_2 ], cost: 1 2: f3 -> f4 : arg1'=arg1P_3, arg2'=arg2P_3, arg3'=arg3P_3, [ 0==arg1P_3 && arg2==arg2P_3 && arg3==arg3P_3 ], cost: 1 14: f4 -> f5 : arg1'=arg1P_15, arg2'=arg2P_15, arg3'=arg3P_15, [ arg2+arg3>0 && arg1==arg1P_15 && arg2==arg2P_15 && arg3==arg3P_15 ], cost: 1 3: f6 -> f9 : arg1'=arg1P_4, arg2'=arg2P_4, arg3'=arg3P_4, [ arg2P_4==-1+arg2 && arg1==arg1P_4 && arg3==arg3P_4 ], cost: 1 11: f9 -> f8 : arg1'=arg1P_12, arg2'=arg2P_12, arg3'=arg3P_12, [ arg1==arg1P_12 && arg2==arg2P_12 && arg3==arg3P_12 ], cost: 1 4: f10 -> f13 : arg1'=arg1P_5, arg2'=arg2P_5, arg3'=arg3P_5, [ arg3P_5==-1+arg3 && arg1==arg1P_5 && arg2==arg2P_5 ], cost: 1 7: f13 -> f12 : arg1'=arg1P_8, arg2'=arg2P_8, arg3'=arg3P_8, [ arg1==arg1P_8 && arg2==arg2P_8 && arg3==arg3P_8 ], cost: 1 5: f7 -> f10 : arg1'=arg1P_6, arg2'=arg2P_6, arg3'=arg3P_6, [ arg3>0 && arg1==arg1P_6 && arg2==arg2P_6 && arg3==arg3P_6 ], cost: 1 6: f7 -> f11 : arg1'=arg1P_7, arg2'=arg2P_7, arg3'=arg3P_7, [ arg3<=0 && arg1==arg1P_7 && arg2==arg2P_7 && arg3==arg3P_7 ], cost: 1 8: f11 -> f12 : arg1'=arg1P_9, arg2'=arg2P_9, arg3'=arg3P_9, [ arg1==arg1P_9 && arg2==arg2P_9 && arg3==arg3P_9 ], cost: 1 12: f12 -> f8 : arg1'=arg1P_13, arg2'=arg2P_13, arg3'=arg3P_13, [ arg1==arg1P_13 && arg2==arg2P_13 && arg3==arg3P_13 ], cost: 1 9: f5 -> f6 : arg1'=arg1P_10, arg2'=arg2P_10, arg3'=arg3P_10, [ arg2>0 && arg1==arg1P_10 && arg2==arg2P_10 && arg3==arg3P_10 ], cost: 1 10: f5 -> f7 : arg1'=arg1P_11, arg2'=arg2P_11, arg3'=arg3P_11, [ arg2<=0 && arg1==arg1P_11 && arg2==arg2P_11 && arg3==arg3P_11 ], cost: 1 13: f8 -> f14 : arg1'=arg1P_14, arg2'=arg2P_14, arg3'=arg3P_14, [ arg1P_14==1+arg1 && arg2==arg2P_14 && arg3==arg3P_14 ], cost: 1 15: f14 -> f4 : arg1'=arg1P_16, arg2'=arg2P_16, arg3'=arg3P_16, [ arg1==arg1P_16 && arg2==arg2P_16 && arg3==arg3P_16 ], cost: 1 17: __init -> f1 : arg1'=arg1P_18, arg2'=arg2P_18, arg3'=arg3P_18, [], cost: 1 Simplified all rules, resulting in: Start location: __init 0: f1 -> f2 : arg2'=arg2P_1, [], cost: 1 1: f2 -> f3 : arg3'=arg3P_2, [], cost: 1 2: f3 -> f4 : arg1'=0, [], cost: 1 14: f4 -> f5 : [ arg2+arg3>0 ], cost: 1 3: f6 -> f9 : arg2'=-1+arg2, [], cost: 1 11: f9 -> f8 : [], cost: 1 4: f10 -> f13 : arg3'=-1+arg3, [], cost: 1 7: f13 -> f12 : [], cost: 1 5: f7 -> f10 : [ arg3>0 ], cost: 1 6: f7 -> f11 : [ arg3<=0 ], cost: 1 8: f11 -> f12 : [], cost: 1 12: f12 -> f8 : [], cost: 1 9: f5 -> f6 : [ arg2>0 ], cost: 1 10: f5 -> f7 : [ arg2<=0 ], cost: 1 13: f8 -> f14 : arg1'=1+arg1, [], cost: 1 15: f14 -> f4 : [], cost: 1 17: __init -> f1 : arg1'=arg1P_18, arg2'=arg2P_18, arg3'=arg3P_18, [], cost: 1 ### Simplification by acceleration and chaining ### Eliminated locations (on linear paths): Start location: __init 14: f4 -> f5 : [ arg2+arg3>0 ], cost: 1 24: f7 -> f12 : [ arg3<=0 ], cost: 2 25: f7 -> f12 : arg3'=-1+arg3, [ arg3>0 ], cost: 3 12: f12 -> f8 : [], cost: 1 10: f5 -> f7 : [ arg2<=0 ], cost: 1 22: f5 -> f8 : arg2'=-1+arg2, [ arg2>0 ], cost: 3 26: f8 -> f4 : arg1'=1+arg1, [], cost: 2 20: __init -> f4 : arg1'=0, arg2'=arg2P_1, arg3'=arg3P_2, [], cost: 4 Eliminated locations (on tree-shaped paths): Start location: __init 27: f4 -> f7 : [ arg2+arg3>0 && arg2<=0 ], cost: 2 28: f4 -> f8 : arg2'=-1+arg2, [ arg2+arg3>0 && arg2>0 ], cost: 4 29: f7 -> f8 : [ arg3<=0 ], cost: 3 30: f7 -> f8 : arg3'=-1+arg3, [ arg3>0 ], cost: 4 26: f8 -> f4 : arg1'=1+arg1, [], cost: 2 20: __init -> f4 : arg1'=0, arg2'=arg2P_1, arg3'=arg3P_2, [], cost: 4 Eliminated locations (on tree-shaped paths): Start location: __init 32: f4 -> f4 : arg1'=1+arg1, arg2'=-1+arg2, [ arg2+arg3>0 && arg2>0 ], cost: 6 33: f4 -> f4 : arg1'=1+arg1, arg3'=-1+arg3, [ arg2+arg3>0 && arg2<=0 && arg3>0 ], cost: 8 20: __init -> f4 : arg1'=0, arg2'=arg2P_1, arg3'=arg3P_2, [], cost: 4 Accelerating simple loops of location 3. Accelerating the following rules: 32: f4 -> f4 : arg1'=1+arg1, arg2'=-1+arg2, [ arg2+arg3>0 && arg2>0 ], cost: 6 33: f4 -> f4 : arg1'=1+arg1, arg3'=-1+arg3, [ arg2+arg3>0 && arg2<=0 && arg3>0 ], cost: 8 Accelerated rule 32 with backward acceleration, yielding the new rule 34. Accelerated rule 32 with backward acceleration, yielding the new rule 35. Accelerated rule 33 with backward acceleration, yielding the new rule 36. Accelerated rule 33 with backward acceleration, yielding the new rule 37. [accelerate] Nesting with 4 inner and 2 outer candidates Removing the simple loops: 32 33. Accelerated all simple loops using metering functions (where possible): Start location: __init 34: f4 -> f4 : arg1'=arg2+arg3+arg1, arg2'=-arg3, [ arg2+arg3>=0 && 1-arg3>0 ], cost: 6*arg2+6*arg3 35: f4 -> f4 : arg1'=arg2+arg1, arg2'=0, [ arg2>=0 && 1+arg3>0 ], cost: 6*arg2 36: f4 -> f4 : arg1'=arg2+arg3+arg1, arg3'=-arg2, [ arg2<=0 && arg2+arg3>=0 ], cost: 8*arg2+8*arg3 37: f4 -> f4 : arg1'=arg3+arg1, arg3'=0, [ arg2<=0 && arg3>=0 && 1+arg2>0 ], cost: 8*arg3 20: __init -> f4 : arg1'=0, arg2'=arg2P_1, arg3'=arg3P_2, [], cost: 4 Chained accelerated rules (with incoming rules): Start location: __init 20: __init -> f4 : arg1'=0, arg2'=arg2P_1, arg3'=arg3P_2, [], cost: 4 38: __init -> f4 : arg1'=arg2P_1+arg3P_2, arg2'=-arg3P_2, arg3'=arg3P_2, [ arg2P_1+arg3P_2>=0 && 1-arg3P_2>0 ], cost: 4+6*arg2P_1+6*arg3P_2 39: __init -> f4 : arg1'=arg2P_1, arg2'=0, arg3'=arg3P_2, [ arg2P_1>=0 && 1+arg3P_2>0 ], cost: 4+6*arg2P_1 40: __init -> f4 : arg1'=arg2P_1+arg3P_2, arg2'=arg2P_1, arg3'=-arg2P_1, [ arg2P_1<=0 && arg2P_1+arg3P_2>=0 ], cost: 4+8*arg2P_1+8*arg3P_2 41: __init -> f4 : arg1'=arg3P_2, arg2'=0, arg3'=0, [ arg3P_2>=0 ], cost: 4+8*arg3P_2 Removed unreachable locations (and leaf rules with constant cost): Start location: __init 38: __init -> f4 : arg1'=arg2P_1+arg3P_2, arg2'=-arg3P_2, arg3'=arg3P_2, [ arg2P_1+arg3P_2>=0 && 1-arg3P_2>0 ], cost: 4+6*arg2P_1+6*arg3P_2 39: __init -> f4 : arg1'=arg2P_1, arg2'=0, arg3'=arg3P_2, [ arg2P_1>=0 && 1+arg3P_2>0 ], cost: 4+6*arg2P_1 40: __init -> f4 : arg1'=arg2P_1+arg3P_2, arg2'=arg2P_1, arg3'=-arg2P_1, [ arg2P_1<=0 && arg2P_1+arg3P_2>=0 ], cost: 4+8*arg2P_1+8*arg3P_2 41: __init -> f4 : arg1'=arg3P_2, arg2'=0, arg3'=0, [ arg3P_2>=0 ], cost: 4+8*arg3P_2 ### Computing asymptotic complexity ### Fully simplified ITS problem Start location: __init 38: __init -> f4 : arg1'=arg2P_1+arg3P_2, arg2'=-arg3P_2, arg3'=arg3P_2, [ arg2P_1+arg3P_2>=0 && 1-arg3P_2>0 ], cost: 4+6*arg2P_1+6*arg3P_2 39: __init -> f4 : arg1'=arg2P_1, arg2'=0, arg3'=arg3P_2, [ arg2P_1>=0 && 1+arg3P_2>0 ], cost: 4+6*arg2P_1 40: __init -> f4 : arg1'=arg2P_1+arg3P_2, arg2'=arg2P_1, arg3'=-arg2P_1, [ arg2P_1<=0 && arg2P_1+arg3P_2>=0 ], cost: 4+8*arg2P_1+8*arg3P_2 41: __init -> f4 : arg1'=arg3P_2, arg2'=0, arg3'=0, [ arg3P_2>=0 ], cost: 4+8*arg3P_2 Computing asymptotic complexity for rule 41 Resulting cost 0 has complexity: Unknown Computing asymptotic complexity for rule 38 Resulting cost 0 has complexity: Unknown Computing asymptotic complexity for rule 39 Resulting cost 0 has complexity: Unknown Computing asymptotic complexity for rule 40 Resulting cost 0 has complexity: Unknown Obtained the following overall complexity (w.r.t. the length of the input n): Complexity: Constant Cpx degree: 0 Solved cost: 1 Rule cost: 1 Rule guard: [] WORST_CASE(Omega(1),?)