Build (method = -2) #dp: 14194 Step-3' Graph: 124 vertices and 1370 arcs (0.08s) Step-4' Graph: 61 vertices and 1244 arcs (0.08s) #V4/#V3 = 0.49 #A4/#A3 = 0.91 Ready! (0.08s) Optimize a model with 161 rows, 1245 columns and 3620 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.01s Presolved: 159 rows, 1243 columns, 3616 nonzeros Variable types: 0 continuous, 1243 integer (47 binary) Found heuristic solution: objective 1781.0000000 Found heuristic solution: objective 1771.0000000 Optimize a model with 159 rows, 1243 columns and 3616 nonzeros Presolved: 159 rows, 1243 columns, 3616 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.091e+03 Factor NZ : 3.735e+03 Factor Ops : 1.376e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 8.11595236e+04 -1.32987321e+05 4.13e+04 9.21e-02 5.90e+02 0s 1 1.82441947e+04 -3.35760206e+04 5.70e+03 7.77e-16 8.53e+01 0s 2 3.68060109e+03 -1.38548458e+04 6.66e+02 2.20e-14 1.36e+01 0s 3 1.60639029e+03 -3.45110751e+03 3.48e+01 5.33e-15 2.16e+00 0s 4 9.14585712e+02 -8.60034946e+02 4.47e+00 1.11e-15 7.00e-01 0s 5 6.10826700e+02 -2.29519639e+02 2.25e+00 5.55e-16 3.30e-01 0s 6 5.01848097e+02 1.90724678e+02 1.00e+00 3.33e-16 1.21e-01 0s 7 4.66900987e+02 4.21954408e+02 3.20e-01 3.52e-16 1.74e-02 0s 8 4.48350737e+02 4.47761139e+02 3.59e-12 3.33e-16 2.28e-04 0s 9 4.48250029e+02 4.48249966e+02 8.49e-13 4.44e-16 2.44e-08 0s 10 4.48250000e+02 4.48250000e+02 5.68e-13 2.22e-16 2.44e-11 0s Barrier solved model in 10 iterations and 0.01 seconds Optimal objective 4.48250000e+02 Root relaxation: objective 4.482500e+02, 1055 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 448.25000 0 22 1771.00000 448.25000 74.7% - 0s H 0 0 449.0000000 448.25000 0.17% - 0s Explored 0 nodes (1226 simplex iterations) in 0.06 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 4.490000000000e+02, best bound 4.490000000000e+02, gap 0.0% Preprocessing time: 0.09 seconds Gurobi run time: 0.06 seconds Total run time: 0.15 seconds Objective: 449 Solution: 2 x [11, 12, 68, 99] 7 x [8, 22, 41, 99] 15 x [1, 6, 68, 75] 12 x [36, 40, 56, 60] 1 x [7, 56, 67, 75] 15 x [15, 28, 84, 97] 9 x [2, 39, 76, 84] 14 x [29, 58, 74, 87] 6 x [7, 37, 44, 93] 2 x [17, 23, 61, 72] 1 x [17, 41, 50, 61] 5 x [17, 45, 50, 66] 15 x [14, 17, 38, 45] 19 x [41, 53, 70, 80] 2 x [11, 20, 32, 72] 2 x [30, 36, 52, 59] 8 x [16, 29, 32, 51] 3 x [24, 29, 42, 58] 1 x [29, 40] 18 x [5, 48, 58, 79] 19 x [7, 10, 20, 93] 12 x [10, 14, 15, 46] 10 x [54, 57, 81, 95] 16 x [23, 30, 63, 92] 3 x [7, 23, 35, 73] 1 x [88, 90, 92, 100] 1 x [54, 71, 88, 92] 1 x [9, 45, 88, 92] 5 x [25, 28, 51, 84] 16 x [40, 66, 78, 96] 22 x [4, 26, 32, 69] 1 x [2, 13, 69, 88] 7 x [36, 85, 89, 100] 1 x [22, 55, 85] 17 x [22, 55, 55, 85] 7 x [42, 53, 64, 78] 23 x [42, 86, 91, 94] 6 x [2, 34, 47, 88] 19 x [12, 43, 83, 95] 16 x [9, 19, 24, 47] 2 x [22, 31, 67, 78] 10 x [21, 67, 86, 91] 3 x [24, 45, 70, 95] 14 x [2, 34, 71, 98] 6 x [4, 49, 69, 79] 2 x [27, 35, 78, 78] 15 x [1, 3, 65, 77] 1 x [11, 65, 76, 95] 29 x [11, 18, 62, 73] 6 x [18, 65, 82, 83] 1 x [33, 77, 78, 81]