WORST_CASE(Omega(n^1),?) ### Pre-processing the ITS problem ### Initial linear ITS problem Start location: l10 0: l0 -> l1 : i^0'=i^post_1, j^0'=j^post_1, n^0'=n^post_1, tmp^0'=tmp^post_1, [ n^0<=i^0 && i^0==i^post_1 && j^0==j^post_1 && n^0==n^post_1 && tmp^0==tmp^post_1 ], cost: 1 1: l0 -> l2 : i^0'=i^post_2, j^0'=j^post_2, n^0'=n^post_2, tmp^0'=tmp^post_2, [ 1+i^0<=n^0 && tmp^post_2==tmp^post_2 && i^0==i^post_2 && j^0==j^post_2 && n^0==n^post_2 ], cost: 1 6: l1 -> l7 : i^0'=i^post_7, j^0'=j^post_7, n^0'=n^post_7, tmp^0'=tmp^post_7, [ i^0==i^post_7 && j^0==j^post_7 && n^0==n^post_7 && tmp^0==tmp^post_7 ], cost: 1 10: l2 -> l1 : i^0'=i^post_11, j^0'=j^post_11, n^0'=n^post_11, tmp^0'=tmp^post_11, [ tmp^0<=0 && 0<=tmp^0 && i^0==i^post_11 && j^0==j^post_11 && n^0==n^post_11 && tmp^0==tmp^post_11 ], cost: 1 11: l2 -> l8 : i^0'=i^post_12, j^0'=j^post_12, n^0'=n^post_12, tmp^0'=tmp^post_12, [ 1<=tmp^0 && i^0==i^post_12 && j^0==j^post_12 && n^0==n^post_12 && tmp^0==tmp^post_12 ], cost: 1 12: l2 -> l8 : i^0'=i^post_13, j^0'=j^post_13, n^0'=n^post_13, tmp^0'=tmp^post_13, [ 1+tmp^0<=0 && i^0==i^post_13 && j^0==j^post_13 && n^0==n^post_13 && tmp^0==tmp^post_13 ], cost: 1 2: l3 -> l4 : i^0'=i^post_3, j^0'=j^post_3, n^0'=n^post_3, tmp^0'=tmp^post_3, [ n^0<=i^0 && i^0==i^post_3 && j^0==j^post_3 && n^0==n^post_3 && tmp^0==tmp^post_3 ], cost: 1 3: l3 -> l5 : i^0'=i^post_4, j^0'=j^post_4, n^0'=n^post_4, tmp^0'=tmp^post_4, [ 1+i^0<=n^0 && i^post_4==1+i^0 && j^post_4==0 && n^0==n^post_4 && tmp^0==tmp^post_4 ], cost: 1 5: l5 -> l0 : i^0'=i^post_6, j^0'=j^post_6, n^0'=n^post_6, tmp^0'=tmp^post_6, [ i^0==i^post_6 && j^0==j^post_6 && n^0==n^post_6 && tmp^0==tmp^post_6 ], cost: 1 4: l6 -> l3 : i^0'=i^post_5, j^0'=j^post_5, n^0'=n^post_5, tmp^0'=tmp^post_5, [ i^0==i^post_5 && j^0==j^post_5 && n^0==n^post_5 && tmp^0==tmp^post_5 ], cost: 1 7: l7 -> l6 : i^0'=i^post_8, j^0'=j^post_8, n^0'=n^post_8, tmp^0'=tmp^post_8, [ j^0<=0 && i^0==i^post_8 && j^0==j^post_8 && n^0==n^post_8 && tmp^0==tmp^post_8 ], cost: 1 8: l7 -> l6 : i^0'=i^post_9, j^0'=j^post_9, n^0'=n^post_9, tmp^0'=tmp^post_9, [ 1<=j^0 && i^post_9==-1+i^0 && j^0==j^post_9 && n^0==n^post_9 && tmp^0==tmp^post_9 ], cost: 1 9: l8 -> l5 : i^0'=i^post_10, j^0'=j^post_10, n^0'=n^post_10, tmp^0'=tmp^post_10, [ i^post_10==1+i^0 && j^post_10==1+j^0 && n^0==n^post_10 && tmp^0==tmp^post_10 ], cost: 1 13: l9 -> l6 : i^0'=i^post_14, j^0'=j^post_14, n^0'=n^post_14, tmp^0'=tmp^post_14, [ i^post_14==0 && j^0==j^post_14 && n^0==n^post_14 && tmp^0==tmp^post_14 ], cost: 1 14: l10 -> l9 : i^0'=i^post_15, j^0'=j^post_15, n^0'=n^post_15, tmp^0'=tmp^post_15, [ i^0==i^post_15 && j^0==j^post_15 && n^0==n^post_15 && tmp^0==tmp^post_15 ], cost: 1 Checking for constant complexity: The following rule is satisfiable with cost >= 1, yielding constant complexity: 14: l10 -> l9 : i^0'=i^post_15, j^0'=j^post_15, n^0'=n^post_15, tmp^0'=tmp^post_15, [ i^0==i^post_15 && j^0==j^post_15 && n^0==n^post_15 && tmp^0==tmp^post_15 ], cost: 1 Removed unreachable and leaf rules: Start location: l10 0: l0 -> l1 : i^0'=i^post_1, j^0'=j^post_1, n^0'=n^post_1, tmp^0'=tmp^post_1, [ n^0<=i^0 && i^0==i^post_1 && j^0==j^post_1 && n^0==n^post_1 && tmp^0==tmp^post_1 ], cost: 1 1: l0 -> l2 : i^0'=i^post_2, j^0'=j^post_2, n^0'=n^post_2, tmp^0'=tmp^post_2, [ 1+i^0<=n^0 && tmp^post_2==tmp^post_2 && i^0==i^post_2 && j^0==j^post_2 && n^0==n^post_2 ], cost: 1 6: l1 -> l7 : i^0'=i^post_7, j^0'=j^post_7, n^0'=n^post_7, tmp^0'=tmp^post_7, [ i^0==i^post_7 && j^0==j^post_7 && n^0==n^post_7 && tmp^0==tmp^post_7 ], cost: 1 10: l2 -> l1 : i^0'=i^post_11, j^0'=j^post_11, n^0'=n^post_11, tmp^0'=tmp^post_11, [ tmp^0<=0 && 0<=tmp^0 && i^0==i^post_11 && j^0==j^post_11 && n^0==n^post_11 && tmp^0==tmp^post_11 ], cost: 1 11: l2 -> l8 : i^0'=i^post_12, j^0'=j^post_12, n^0'=n^post_12, tmp^0'=tmp^post_12, [ 1<=tmp^0 && i^0==i^post_12 && j^0==j^post_12 && n^0==n^post_12 && tmp^0==tmp^post_12 ], cost: 1 12: l2 -> l8 : i^0'=i^post_13, j^0'=j^post_13, n^0'=n^post_13, tmp^0'=tmp^post_13, [ 1+tmp^0<=0 && i^0==i^post_13 && j^0==j^post_13 && n^0==n^post_13 && tmp^0==tmp^post_13 ], cost: 1 3: l3 -> l5 : i^0'=i^post_4, j^0'=j^post_4, n^0'=n^post_4, tmp^0'=tmp^post_4, [ 1+i^0<=n^0 && i^post_4==1+i^0 && j^post_4==0 && n^0==n^post_4 && tmp^0==tmp^post_4 ], cost: 1 5: l5 -> l0 : i^0'=i^post_6, j^0'=j^post_6, n^0'=n^post_6, tmp^0'=tmp^post_6, [ i^0==i^post_6 && j^0==j^post_6 && n^0==n^post_6 && tmp^0==tmp^post_6 ], cost: 1 4: l6 -> l3 : i^0'=i^post_5, j^0'=j^post_5, n^0'=n^post_5, tmp^0'=tmp^post_5, [ i^0==i^post_5 && j^0==j^post_5 && n^0==n^post_5 && tmp^0==tmp^post_5 ], cost: 1 7: l7 -> l6 : i^0'=i^post_8, j^0'=j^post_8, n^0'=n^post_8, tmp^0'=tmp^post_8, [ j^0<=0 && i^0==i^post_8 && j^0==j^post_8 && n^0==n^post_8 && tmp^0==tmp^post_8 ], cost: 1 8: l7 -> l6 : i^0'=i^post_9, j^0'=j^post_9, n^0'=n^post_9, tmp^0'=tmp^post_9, [ 1<=j^0 && i^post_9==-1+i^0 && j^0==j^post_9 && n^0==n^post_9 && tmp^0==tmp^post_9 ], cost: 1 9: l8 -> l5 : i^0'=i^post_10, j^0'=j^post_10, n^0'=n^post_10, tmp^0'=tmp^post_10, [ i^post_10==1+i^0 && j^post_10==1+j^0 && n^0==n^post_10 && tmp^0==tmp^post_10 ], cost: 1 13: l9 -> l6 : i^0'=i^post_14, j^0'=j^post_14, n^0'=n^post_14, tmp^0'=tmp^post_14, [ i^post_14==0 && j^0==j^post_14 && n^0==n^post_14 && tmp^0==tmp^post_14 ], cost: 1 14: l10 -> l9 : i^0'=i^post_15, j^0'=j^post_15, n^0'=n^post_15, tmp^0'=tmp^post_15, [ i^0==i^post_15 && j^0==j^post_15 && n^0==n^post_15 && tmp^0==tmp^post_15 ], cost: 1 Simplified all rules, resulting in: Start location: l10 0: l0 -> l1 : [ n^0<=i^0 ], cost: 1 1: l0 -> l2 : tmp^0'=tmp^post_2, [ 1+i^0<=n^0 ], cost: 1 6: l1 -> l7 : [], cost: 1 10: l2 -> l1 : [ tmp^0==0 ], cost: 1 11: l2 -> l8 : [ 1<=tmp^0 ], cost: 1 12: l2 -> l8 : [ 1+tmp^0<=0 ], cost: 1 3: l3 -> l5 : i^0'=1+i^0, j^0'=0, [ 1+i^0<=n^0 ], cost: 1 5: l5 -> l0 : [], cost: 1 4: l6 -> l3 : [], cost: 1 7: l7 -> l6 : [ j^0<=0 ], cost: 1 8: l7 -> l6 : i^0'=-1+i^0, [ 1<=j^0 ], cost: 1 9: l8 -> l5 : i^0'=1+i^0, j^0'=1+j^0, [], cost: 1 13: l9 -> l6 : i^0'=0, [], cost: 1 14: l10 -> l9 : [], cost: 1 ### Simplification by acceleration and chaining ### Eliminated locations (on linear paths): Start location: l10 0: l0 -> l1 : [ n^0<=i^0 ], cost: 1 1: l0 -> l2 : tmp^0'=tmp^post_2, [ 1+i^0<=n^0 ], cost: 1 6: l1 -> l7 : [], cost: 1 10: l2 -> l1 : [ tmp^0==0 ], cost: 1 11: l2 -> l8 : [ 1<=tmp^0 ], cost: 1 12: l2 -> l8 : [ 1+tmp^0<=0 ], cost: 1 5: l5 -> l0 : [], cost: 1 16: l6 -> l5 : i^0'=1+i^0, j^0'=0, [ 1+i^0<=n^0 ], cost: 2 7: l7 -> l6 : [ j^0<=0 ], cost: 1 8: l7 -> l6 : i^0'=-1+i^0, [ 1<=j^0 ], cost: 1 9: l8 -> l5 : i^0'=1+i^0, j^0'=1+j^0, [], cost: 1 15: l10 -> l6 : i^0'=0, [], cost: 2 Eliminated locations (on tree-shaped paths): Start location: l10 19: l1 -> l6 : [ j^0<=0 ], cost: 2 20: l1 -> l6 : i^0'=-1+i^0, [ 1<=j^0 ], cost: 2 10: l2 -> l1 : [ tmp^0==0 ], cost: 1 21: l2 -> l5 : i^0'=1+i^0, j^0'=1+j^0, [ 1<=tmp^0 ], cost: 2 22: l2 -> l5 : i^0'=1+i^0, j^0'=1+j^0, [ 1+tmp^0<=0 ], cost: 2 17: l5 -> l1 : [ n^0<=i^0 ], cost: 2 18: l5 -> l2 : tmp^0'=tmp^post_2, [ 1+i^0<=n^0 ], cost: 2 16: l6 -> l5 : i^0'=1+i^0, j^0'=0, [ 1+i^0<=n^0 ], cost: 2 15: l10 -> l6 : i^0'=0, [], cost: 2 Eliminated locations (on tree-shaped paths): Start location: l10 19: l1 -> l6 : [ j^0<=0 ], cost: 2 20: l1 -> l6 : i^0'=-1+i^0, [ 1<=j^0 ], cost: 2 17: l5 -> l1 : [ n^0<=i^0 ], cost: 2 23: l5 -> l1 : tmp^0'=tmp^post_2, [ 1+i^0<=n^0 && tmp^post_2==0 ], cost: 3 24: l5 -> l5 : i^0'=1+i^0, j^0'=1+j^0, tmp^0'=tmp^post_2, [ 1+i^0<=n^0 && 1<=tmp^post_2 ], cost: 4 25: l5 -> l5 : i^0'=1+i^0, j^0'=1+j^0, tmp^0'=tmp^post_2, [ 1+i^0<=n^0 && 1+tmp^post_2<=0 ], cost: 4 16: l6 -> l5 : i^0'=1+i^0, j^0'=0, [ 1+i^0<=n^0 ], cost: 2 15: l10 -> l6 : i^0'=0, [], cost: 2 Accelerating simple loops of location 5. Accelerating the following rules: 24: l5 -> l5 : i^0'=1+i^0, j^0'=1+j^0, tmp^0'=tmp^post_2, [ 1+i^0<=n^0 && 1<=tmp^post_2 ], cost: 4 25: l5 -> l5 : i^0'=1+i^0, j^0'=1+j^0, tmp^0'=tmp^post_2, [ 1+i^0<=n^0 && 1+tmp^post_2<=0 ], cost: 4 Accelerated rule 24 with metering function n^0-i^0, yielding the new rule 26. Accelerated rule 25 with metering function n^0-i^0, yielding the new rule 27. Removing the simple loops: 24 25. Accelerated all simple loops using metering functions (where possible): Start location: l10 19: l1 -> l6 : [ j^0<=0 ], cost: 2 20: l1 -> l6 : i^0'=-1+i^0, [ 1<=j^0 ], cost: 2 17: l5 -> l1 : [ n^0<=i^0 ], cost: 2 23: l5 -> l1 : tmp^0'=tmp^post_2, [ 1+i^0<=n^0 && tmp^post_2==0 ], cost: 3 26: l5 -> l5 : i^0'=n^0, j^0'=n^0-i^0+j^0, tmp^0'=tmp^post_2, [ 1+i^0<=n^0 && 1<=tmp^post_2 ], cost: 4*n^0-4*i^0 27: l5 -> l5 : i^0'=n^0, j^0'=n^0-i^0+j^0, tmp^0'=tmp^post_2, [ 1+i^0<=n^0 && 1+tmp^post_2<=0 ], cost: 4*n^0-4*i^0 16: l6 -> l5 : i^0'=1+i^0, j^0'=0, [ 1+i^0<=n^0 ], cost: 2 15: l10 -> l6 : i^0'=0, [], cost: 2 Chained accelerated rules (with incoming rules): Start location: l10 19: l1 -> l6 : [ j^0<=0 ], cost: 2 20: l1 -> l6 : i^0'=-1+i^0, [ 1<=j^0 ], cost: 2 17: l5 -> l1 : [ n^0<=i^0 ], cost: 2 23: l5 -> l1 : tmp^0'=tmp^post_2, [ 1+i^0<=n^0 && tmp^post_2==0 ], cost: 3 16: l6 -> l5 : i^0'=1+i^0, j^0'=0, [ 1+i^0<=n^0 ], cost: 2 28: l6 -> l5 : i^0'=n^0, j^0'=-1+n^0-i^0, tmp^0'=tmp^post_2, [ 2+i^0<=n^0 && 1<=tmp^post_2 ], cost: -2+4*n^0-4*i^0 29: l6 -> l5 : i^0'=n^0, j^0'=-1+n^0-i^0, tmp^0'=tmp^post_2, [ 2+i^0<=n^0 && 1+tmp^post_2<=0 ], cost: -2+4*n^0-4*i^0 15: l10 -> l6 : i^0'=0, [], cost: 2 Eliminated locations (on tree-shaped paths): Start location: l10 19: l1 -> l6 : [ j^0<=0 ], cost: 2 20: l1 -> l6 : i^0'=-1+i^0, [ 1<=j^0 ], cost: 2 30: l6 -> l1 : i^0'=1+i^0, j^0'=0, [ 1+i^0<=n^0 && n^0<=1+i^0 ], cost: 4 31: l6 -> l1 : i^0'=1+i^0, j^0'=0, tmp^0'=tmp^post_2, [ 2+i^0<=n^0 && tmp^post_2==0 ], cost: 5 32: l6 -> l1 : i^0'=n^0, j^0'=-1+n^0-i^0, tmp^0'=tmp^post_2, [ 2+i^0<=n^0 && 1<=tmp^post_2 ], cost: 4*n^0-4*i^0 33: l6 -> l1 : i^0'=n^0, j^0'=-1+n^0-i^0, tmp^0'=tmp^post_2, [ 2+i^0<=n^0 && 1+tmp^post_2<=0 ], cost: 4*n^0-4*i^0 34: l6 -> [12] : [ 2+i^0<=n^0 && 1<=tmp^post_2 ], cost: -2+4*n^0-4*i^0 35: l6 -> [12] : [ 2+i^0<=n^0 && 1+tmp^post_2<=0 ], cost: -2+4*n^0-4*i^0 15: l10 -> l6 : i^0'=0, [], cost: 2 Eliminated locations (on tree-shaped paths): Start location: l10 34: l6 -> [12] : [ 2+i^0<=n^0 && 1<=tmp^post_2 ], cost: -2+4*n^0-4*i^0 35: l6 -> [12] : [ 2+i^0<=n^0 && 1+tmp^post_2<=0 ], cost: -2+4*n^0-4*i^0 36: l6 -> l6 : i^0'=1+i^0, j^0'=0, [ 1+i^0<=n^0 && n^0<=1+i^0 ], cost: 6 37: l6 -> l6 : i^0'=1+i^0, j^0'=0, tmp^0'=tmp^post_2, [ 2+i^0<=n^0 && tmp^post_2==0 ], cost: 7 38: l6 -> l6 : i^0'=-1+n^0, j^0'=-1+n^0-i^0, tmp^0'=tmp^post_2, [ 2+i^0<=n^0 && 1<=tmp^post_2 ], cost: 2+4*n^0-4*i^0 39: l6 -> l6 : i^0'=-1+n^0, j^0'=-1+n^0-i^0, tmp^0'=tmp^post_2, [ 2+i^0<=n^0 && 1+tmp^post_2<=0 ], cost: 2+4*n^0-4*i^0 40: l6 -> [13] : [ 2+i^0<=n^0 && 1<=tmp^post_2 ], cost: 4*n^0-4*i^0 41: l6 -> [13] : [ 2+i^0<=n^0 && 1+tmp^post_2<=0 ], cost: 4*n^0-4*i^0 15: l10 -> l6 : i^0'=0, [], cost: 2 Accelerating simple loops of location 6. Simplified some of the simple loops (and removed duplicate rules). Accelerating the following rules: 36: l6 -> l6 : i^0'=1+i^0, j^0'=0, [ 1-n^0+i^0==0 ], cost: 6 37: l6 -> l6 : i^0'=1+i^0, j^0'=0, tmp^0'=0, [ 2+i^0<=n^0 ], cost: 7 38: l6 -> l6 : i^0'=-1+n^0, j^0'=-1+n^0-i^0, tmp^0'=tmp^post_2, [ 2+i^0<=n^0 && 1<=tmp^post_2 ], cost: 2+4*n^0-4*i^0 39: l6 -> l6 : i^0'=-1+n^0, j^0'=-1+n^0-i^0, tmp^0'=tmp^post_2, [ 2+i^0<=n^0 && 1+tmp^post_2<=0 ], cost: 2+4*n^0-4*i^0 Accelerated rule 36 with metering function n^0-i^0, yielding the new rule 42. Accelerated rule 37 with metering function -1+n^0-i^0, yielding the new rule 43. Found no metering function for rule 38. Found no metering function for rule 39. Removing the simple loops: 36 37. Accelerated all simple loops using metering functions (where possible): Start location: l10 34: l6 -> [12] : [ 2+i^0<=n^0 && 1<=tmp^post_2 ], cost: -2+4*n^0-4*i^0 35: l6 -> [12] : [ 2+i^0<=n^0 && 1+tmp^post_2<=0 ], cost: -2+4*n^0-4*i^0 38: l6 -> l6 : i^0'=-1+n^0, j^0'=-1+n^0-i^0, tmp^0'=tmp^post_2, [ 2+i^0<=n^0 && 1<=tmp^post_2 ], cost: 2+4*n^0-4*i^0 39: l6 -> l6 : i^0'=-1+n^0, j^0'=-1+n^0-i^0, tmp^0'=tmp^post_2, [ 2+i^0<=n^0 && 1+tmp^post_2<=0 ], cost: 2+4*n^0-4*i^0 40: l6 -> [13] : [ 2+i^0<=n^0 && 1<=tmp^post_2 ], cost: 4*n^0-4*i^0 41: l6 -> [13] : [ 2+i^0<=n^0 && 1+tmp^post_2<=0 ], cost: 4*n^0-4*i^0 42: l6 -> l6 : i^0'=n^0, j^0'=0, [ 1-n^0+i^0==0 ], cost: 6*n^0-6*i^0 43: l6 -> l6 : i^0'=-1+n^0, j^0'=0, tmp^0'=0, [ 2+i^0<=n^0 ], cost: -7+7*n^0-7*i^0 15: l10 -> l6 : i^0'=0, [], cost: 2 Chained accelerated rules (with incoming rules): Start location: l10 34: l6 -> [12] : [ 2+i^0<=n^0 && 1<=tmp^post_2 ], cost: -2+4*n^0-4*i^0 35: l6 -> [12] : [ 2+i^0<=n^0 && 1+tmp^post_2<=0 ], cost: -2+4*n^0-4*i^0 40: l6 -> [13] : [ 2+i^0<=n^0 && 1<=tmp^post_2 ], cost: 4*n^0-4*i^0 41: l6 -> [13] : [ 2+i^0<=n^0 && 1+tmp^post_2<=0 ], cost: 4*n^0-4*i^0 15: l10 -> l6 : i^0'=0, [], cost: 2 44: l10 -> l6 : i^0'=-1+n^0, j^0'=-1+n^0, tmp^0'=tmp^post_2, [ 2<=n^0 && 1<=tmp^post_2 ], cost: 4+4*n^0 45: l10 -> l6 : i^0'=-1+n^0, j^0'=-1+n^0, tmp^0'=tmp^post_2, [ 2<=n^0 && 1+tmp^post_2<=0 ], cost: 4+4*n^0 46: l10 -> l6 : i^0'=n^0, j^0'=0, [ 1-n^0==0 ], cost: 2+6*n^0 47: l10 -> l6 : i^0'=-1+n^0, j^0'=0, tmp^0'=0, [ 2<=n^0 ], cost: -5+7*n^0 Eliminated locations (on tree-shaped paths): Start location: l10 48: l10 -> [12] : i^0'=0, [ 2<=n^0 && 1<=tmp^post_2 ], cost: 4*n^0 49: l10 -> [12] : i^0'=0, [ 2<=n^0 && 1+tmp^post_2<=0 ], cost: 4*n^0 50: l10 -> [13] : i^0'=0, [ 2<=n^0 && 1<=tmp^post_2 ], cost: 2+4*n^0 51: l10 -> [13] : i^0'=0, [ 2<=n^0 && 1+tmp^post_2<=0 ], cost: 2+4*n^0 52: l10 -> [15] : [ 2<=n^0 && 1<=tmp^post_2 ], cost: 4+4*n^0 53: l10 -> [15] : [ 2<=n^0 && 1+tmp^post_2<=0 ], cost: 4+4*n^0 54: l10 -> [15] : [ 1-n^0==0 ], cost: 2+6*n^0 55: l10 -> [15] : [ 2<=n^0 ], cost: -5+7*n^0 ### Computing asymptotic complexity ### Fully simplified ITS problem Start location: l10 52: l10 -> [15] : [ 2<=n^0 && 1<=tmp^post_2 ], cost: 4+4*n^0 53: l10 -> [15] : [ 2<=n^0 && 1+tmp^post_2<=0 ], cost: 4+4*n^0 54: l10 -> [15] : [ 1-n^0==0 ], cost: 2+6*n^0 55: l10 -> [15] : [ 2<=n^0 ], cost: -5+7*n^0 Computing asymptotic complexity for rule 52 Solved the limit problem by the following transformations: Created initial limit problem: 4+4*n^0 (+), -1+n^0 (+/+!), tmp^post_2 (+/+!) [not solved] removing all constraints (solved by SMT) resulting limit problem: [solved] applying transformation rule (C) using substitution {n^0==n,tmp^post_2==n} resulting limit problem: [solved] Solution: n^0 / n tmp^post_2 / n Resulting cost 4+4*n has complexity: Poly(n^1) Found new complexity Poly(n^1). Obtained the following overall complexity (w.r.t. the length of the input n): Complexity: Poly(n^1) Cpx degree: 1 Solved cost: 4+4*n Rule cost: 4+4*n^0 Rule guard: [ 2<=n^0 && 1<=tmp^post_2 ] WORST_CASE(Omega(n^1),?)