NO ### Pre-processing the ITS problem ### Initial linear ITS problem Start location: l7 0: l0 -> l1 : __const_10^0'=__const_10^post_1, __const_5^0'=__const_5^post_1, i^0'=i^post_1, j^0'=j^post_1, [ j^post_1==i^0 && __const_10^0==__const_10^post_1 && __const_5^0==__const_5^post_1 && i^0==i^post_1 ], cost: 1 1: l1 -> l2 : __const_10^0'=__const_10^post_2, __const_5^0'=__const_5^post_2, i^0'=i^post_2, j^0'=j^post_2, [ i^post_2==1+i^0 && __const_10^0==__const_10^post_2 && __const_5^0==__const_5^post_2 && j^0==j^post_2 ], cost: 1 7: l2 -> l4 : __const_10^0'=__const_10^post_8, __const_5^0'=__const_5^post_8, i^0'=i^post_8, j^0'=j^post_8, [ __const_10^0==__const_10^post_8 && __const_5^0==__const_5^post_8 && i^0==i^post_8 && j^0==j^post_8 ], cost: 1 2: l3 -> l0 : __const_10^0'=__const_10^post_3, __const_5^0'=__const_5^post_3, i^0'=i^post_3, j^0'=j^post_3, [ 1+__const_5^0<=i^0 && __const_10^0==__const_10^post_3 && __const_5^0==__const_5^post_3 && i^0==i^post_3 && j^0==j^post_3 ], cost: 1 3: l3 -> l0 : __const_10^0'=__const_10^post_4, __const_5^0'=__const_5^post_4, i^0'=i^post_4, j^0'=j^post_4, [ 1+i^0<=__const_5^0 && __const_10^0==__const_10^post_4 && __const_5^0==__const_5^post_4 && i^0==i^post_4 && j^0==j^post_4 ], cost: 1 4: l3 -> l1 : __const_10^0'=__const_10^post_5, __const_5^0'=__const_5^post_5, i^0'=i^post_5, j^0'=j^post_5, [ i^0<=__const_5^0 && __const_5^0<=i^0 && i^post_5==i^post_5 && __const_10^0==__const_10^post_5 && __const_5^0==__const_5^post_5 && j^0==j^post_5 ], cost: 1 5: l4 -> l5 : __const_10^0'=__const_10^post_6, __const_5^0'=__const_5^post_6, i^0'=i^post_6, j^0'=j^post_6, [ __const_10^0<=i^0 && __const_10^0==__const_10^post_6 && __const_5^0==__const_5^post_6 && i^0==i^post_6 && j^0==j^post_6 ], cost: 1 6: l4 -> l3 : __const_10^0'=__const_10^post_7, __const_5^0'=__const_5^post_7, i^0'=i^post_7, j^0'=j^post_7, [ 1+i^0<=__const_10^0 && __const_10^0==__const_10^post_7 && __const_5^0==__const_5^post_7 && i^0==i^post_7 && j^0==j^post_7 ], cost: 1 8: l6 -> l2 : __const_10^0'=__const_10^post_9, __const_5^0'=__const_5^post_9, i^0'=i^post_9, j^0'=j^post_9, [ i^post_9==0 && __const_10^0==__const_10^post_9 && __const_5^0==__const_5^post_9 && j^0==j^post_9 ], cost: 1 9: l7 -> l6 : __const_10^0'=__const_10^post_10, __const_5^0'=__const_5^post_10, i^0'=i^post_10, j^0'=j^post_10, [ __const_10^0==__const_10^post_10 && __const_5^0==__const_5^post_10 && i^0==i^post_10 && j^0==j^post_10 ], cost: 1 Checking for constant complexity: The following rule is satisfiable with cost >= 1, yielding constant complexity: 9: l7 -> l6 : __const_10^0'=__const_10^post_10, __const_5^0'=__const_5^post_10, i^0'=i^post_10, j^0'=j^post_10, [ __const_10^0==__const_10^post_10 && __const_5^0==__const_5^post_10 && i^0==i^post_10 && j^0==j^post_10 ], cost: 1 Removed unreachable and leaf rules: Start location: l7 0: l0 -> l1 : __const_10^0'=__const_10^post_1, __const_5^0'=__const_5^post_1, i^0'=i^post_1, j^0'=j^post_1, [ j^post_1==i^0 && __const_10^0==__const_10^post_1 && __const_5^0==__const_5^post_1 && i^0==i^post_1 ], cost: 1 1: l1 -> l2 : __const_10^0'=__const_10^post_2, __const_5^0'=__const_5^post_2, i^0'=i^post_2, j^0'=j^post_2, [ i^post_2==1+i^0 && __const_10^0==__const_10^post_2 && __const_5^0==__const_5^post_2 && j^0==j^post_2 ], cost: 1 7: l2 -> l4 : __const_10^0'=__const_10^post_8, __const_5^0'=__const_5^post_8, i^0'=i^post_8, j^0'=j^post_8, [ __const_10^0==__const_10^post_8 && __const_5^0==__const_5^post_8 && i^0==i^post_8 && j^0==j^post_8 ], cost: 1 2: l3 -> l0 : __const_10^0'=__const_10^post_3, __const_5^0'=__const_5^post_3, i^0'=i^post_3, j^0'=j^post_3, [ 1+__const_5^0<=i^0 && __const_10^0==__const_10^post_3 && __const_5^0==__const_5^post_3 && i^0==i^post_3 && j^0==j^post_3 ], cost: 1 3: l3 -> l0 : __const_10^0'=__const_10^post_4, __const_5^0'=__const_5^post_4, i^0'=i^post_4, j^0'=j^post_4, [ 1+i^0<=__const_5^0 && __const_10^0==__const_10^post_4 && __const_5^0==__const_5^post_4 && i^0==i^post_4 && j^0==j^post_4 ], cost: 1 4: l3 -> l1 : __const_10^0'=__const_10^post_5, __const_5^0'=__const_5^post_5, i^0'=i^post_5, j^0'=j^post_5, [ i^0<=__const_5^0 && __const_5^0<=i^0 && i^post_5==i^post_5 && __const_10^0==__const_10^post_5 && __const_5^0==__const_5^post_5 && j^0==j^post_5 ], cost: 1 6: l4 -> l3 : __const_10^0'=__const_10^post_7, __const_5^0'=__const_5^post_7, i^0'=i^post_7, j^0'=j^post_7, [ 1+i^0<=__const_10^0 && __const_10^0==__const_10^post_7 && __const_5^0==__const_5^post_7 && i^0==i^post_7 && j^0==j^post_7 ], cost: 1 8: l6 -> l2 : __const_10^0'=__const_10^post_9, __const_5^0'=__const_5^post_9, i^0'=i^post_9, j^0'=j^post_9, [ i^post_9==0 && __const_10^0==__const_10^post_9 && __const_5^0==__const_5^post_9 && j^0==j^post_9 ], cost: 1 9: l7 -> l6 : __const_10^0'=__const_10^post_10, __const_5^0'=__const_5^post_10, i^0'=i^post_10, j^0'=j^post_10, [ __const_10^0==__const_10^post_10 && __const_5^0==__const_5^post_10 && i^0==i^post_10 && j^0==j^post_10 ], cost: 1 Simplified all rules, resulting in: Start location: l7 0: l0 -> l1 : j^0'=i^0, [], cost: 1 1: l1 -> l2 : i^0'=1+i^0, [], cost: 1 7: l2 -> l4 : [], cost: 1 2: l3 -> l0 : [ 1+__const_5^0<=i^0 ], cost: 1 3: l3 -> l0 : [ 1+i^0<=__const_5^0 ], cost: 1 4: l3 -> l1 : i^0'=i^post_5, [ i^0-__const_5^0==0 ], cost: 1 6: l4 -> l3 : [ 1+i^0<=__const_10^0 ], cost: 1 8: l6 -> l2 : i^0'=0, [], cost: 1 9: l7 -> l6 : [], cost: 1 ### Simplification by acceleration and chaining ### Eliminated locations (on linear paths): Start location: l7 0: l0 -> l1 : j^0'=i^0, [], cost: 1 1: l1 -> l2 : i^0'=1+i^0, [], cost: 1 11: l2 -> l3 : [ 1+i^0<=__const_10^0 ], cost: 2 2: l3 -> l0 : [ 1+__const_5^0<=i^0 ], cost: 1 3: l3 -> l0 : [ 1+i^0<=__const_5^0 ], cost: 1 4: l3 -> l1 : i^0'=i^post_5, [ i^0-__const_5^0==0 ], cost: 1 10: l7 -> l2 : i^0'=0, [], cost: 2 Eliminated locations (on tree-shaped paths): Start location: l7 0: l0 -> l1 : j^0'=i^0, [], cost: 1 1: l1 -> l2 : i^0'=1+i^0, [], cost: 1 12: l2 -> l0 : [ 1+i^0<=__const_10^0 && 1+__const_5^0<=i^0 ], cost: 3 13: l2 -> l0 : [ 1+i^0<=__const_10^0 && 1+i^0<=__const_5^0 ], cost: 3 14: l2 -> l1 : i^0'=i^post_5, [ 1+i^0<=__const_10^0 && i^0-__const_5^0==0 ], cost: 3 10: l7 -> l2 : i^0'=0, [], cost: 2 Eliminated locations (on tree-shaped paths): Start location: l7 17: l2 -> l2 : i^0'=1+i^post_5, [ 1+i^0<=__const_10^0 && i^0-__const_5^0==0 ], cost: 4 18: l2 -> l2 : i^0'=1+i^0, j^0'=i^0, [ 1+i^0<=__const_10^0 && 1+__const_5^0<=i^0 ], cost: 5 19: l2 -> l2 : i^0'=1+i^0, j^0'=i^0, [ 1+i^0<=__const_10^0 && 1+i^0<=__const_5^0 ], cost: 5 10: l7 -> l2 : i^0'=0, [], cost: 2 Accelerating simple loops of location 2. Accelerating the following rules: 17: l2 -> l2 : i^0'=1+i^post_5, [ 1+i^0<=__const_10^0 && i^0-__const_5^0==0 ], cost: 4 18: l2 -> l2 : i^0'=1+i^0, j^0'=i^0, [ 1+i^0<=__const_10^0 && 1+__const_5^0<=i^0 ], cost: 5 19: l2 -> l2 : i^0'=1+i^0, j^0'=i^0, [ 1+i^0<=__const_10^0 && 1+i^0<=__const_5^0 ], cost: 5 Accelerated rule 17 with NONTERM (after strengthening guard), yielding the new rule 20. Accelerated rule 18 with metering function -i^0+__const_10^0, yielding the new rule 21. Found no metering function for rule 19. Removing the simple loops: 18. Accelerated all simple loops using metering functions (where possible): Start location: l7 17: l2 -> l2 : i^0'=1+i^post_5, [ 1+i^0<=__const_10^0 && i^0-__const_5^0==0 ], cost: 4 19: l2 -> l2 : i^0'=1+i^0, j^0'=i^0, [ 1+i^0<=__const_10^0 && 1+i^0<=__const_5^0 ], cost: 5 20: l2 -> [8] : [ 1+i^0<=__const_10^0 && i^0-__const_5^0==0 && 2+i^post_5<=__const_10^0 && 1+i^post_5-__const_5^0==0 ], cost: NONTERM 21: l2 -> l2 : i^0'=__const_10^0, j^0'=-1+__const_10^0, [ 1+i^0<=__const_10^0 && 1+__const_5^0<=i^0 ], cost: -5*i^0+5*__const_10^0 10: l7 -> l2 : i^0'=0, [], cost: 2 Chained accelerated rules (with incoming rules): Start location: l7 10: l7 -> l2 : i^0'=0, [], cost: 2 22: l7 -> l2 : i^0'=1+i^post_5, [ 1<=__const_10^0 && -__const_5^0==0 ], cost: 6 23: l7 -> l2 : i^0'=1, j^0'=0, [ 1<=__const_10^0 && 1<=__const_5^0 ], cost: 7 24: l7 -> [8] : i^0'=0, [ 1<=__const_10^0 && -__const_5^0==0 && 1+__const_5^0<=__const_10^0 ], cost: NONTERM 25: l7 -> l2 : i^0'=__const_10^0, j^0'=-1+__const_10^0, [ 1<=__const_10^0 && 1+__const_5^0<=0 ], cost: 2+5*__const_10^0 Removed unreachable locations (and leaf rules with constant cost): Start location: l7 24: l7 -> [8] : i^0'=0, [ 1<=__const_10^0 && -__const_5^0==0 && 1+__const_5^0<=__const_10^0 ], cost: NONTERM 25: l7 -> l2 : i^0'=__const_10^0, j^0'=-1+__const_10^0, [ 1<=__const_10^0 && 1+__const_5^0<=0 ], cost: 2+5*__const_10^0 ### Computing asymptotic complexity ### Fully simplified ITS problem Start location: l7 24: l7 -> [8] : i^0'=0, [ 1<=__const_10^0 && -__const_5^0==0 && 1+__const_5^0<=__const_10^0 ], cost: NONTERM 25: l7 -> l2 : i^0'=__const_10^0, j^0'=-1+__const_10^0, [ 1<=__const_10^0 && 1+__const_5^0<=0 ], cost: 2+5*__const_10^0 Computing asymptotic complexity for rule 24 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: [ 1<=__const_10^0 && -__const_5^0==0 ] NO