Build (method = -2) #dp: 3300 Step-3' Graph: 67 vertices and 280 arcs (0.01s) Step-4' Graph: 26 vertices and 198 arcs (0.01s) #V4/#V3 = 0.39 #A4/#A3 = 0.71 Ready! (0.01s) Optimize a model with 126 rows, 199 columns and 550 nonzeros Presolve removed 53 rows and 55 columns Presolve time: 0.00s Presolved: 73 rows, 144 columns, 388 nonzeros Variable types: 0 continuous, 144 integer (1 binary) Found heuristic solution: objective 5206.0000000 Found heuristic solution: objective 3965.0000000 Found heuristic solution: objective 2908.0000000 Optimize a model with 73 rows, 144 columns and 388 nonzeros Presolved: 73 rows, 144 columns, 388 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.430e+02 Factor NZ : 1.083e+03 Factor Ops : 2.166e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 8.26580735e+04 -8.44144399e+04 1.42e+04 2.22e-16 1.57e+03 0s 1 1.94217489e+04 -2.30607699e+04 1.71e+03 5.55e-16 2.27e+02 0s 2 4.93960239e+03 -1.51885856e+03 2.74e+01 5.33e-15 2.02e+01 0s 3 3.74011545e+03 1.91002861e+03 4.96e-01 1.76e-15 5.42e+00 0s 4 2.84770158e+03 2.56208457e+03 1.66e-02 1.44e-15 8.45e-01 0s 5 2.83001563e+03 2.73534746e+03 7.49e-03 1.11e-15 2.80e-01 0s 6 2.78442574e+03 2.77874191e+03 5.58e-04 9.99e-16 1.68e-02 0s 7 2.78350209e+03 2.78349777e+03 1.73e-07 1.15e-15 1.28e-05 0s 8 2.78350000e+03 2.78350000e+03 1.95e-11 9.99e-16 1.28e-08 0s 9 2.78350000e+03 2.78350000e+03 6.42e-12 1.27e-15 1.28e-11 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 2.78350000e+03 Root relaxation: objective 2.783500e+03, 68 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2783.50000 0 2 2908.00000 2783.50000 4.28% - 0s H 0 0 2784.0000000 2783.50000 0.02% - 0s Explored 0 nodes (68 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.784000000000e+03, best bound 2.784000000000e+03, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.01 seconds Total run time: 0.03 seconds Objective: 2784 Solution: 44 x [73] 1 x [72, 73] 91 x [27, 72] 27 x [51, 63] 8 x [85] 76 x [39, 85] 4 x [51, 85] 95 x [61] 46 x [36] 56 x [31, 96] 24 x [31, 51] 54 x [30] 72 x [32, 33] 49 x [40, 70] 4 x [57] 2 x [40, 57] 23 x [57, 58] 2 x [24, 64] 22 x [50, 64] 80 x [24, 44] 97 x [15, 76] 2 x [15, 24] 17 x [6, 97] 7 x [40, 97] 65 x [16, 93] 5 x [13, 38] 1 x [38, 83] 17 x [32, 38] 27 x [14, 89] 9 x [67] 39 x [49, 50] 57 x [19, 95] 25 x [13, 95] 92 x [75, 83] 82 x [17, 53] 1 x [14, 53] 2 x [53, 83] 2 x [42, 80] 11 x [10, 80] 2 x [65, 91] 2 x [12, 91] 90 x [46, 91] 1 x [11, 91] 42 x [29, 68] 14 x [12, 29] 7 x [1, 11] 40 x [1, 10] 71 x [2, 94] 6 x [55, 90] 2 x [22, 90] 22 x [11, 90] 2 x [22, 48] 48 x [69, 78] 76 x [37, 92] 1 x [3, 7] 2 x [28, 99] 63 x [28, 88] 88 x [8, 9] 4 x [43, 79] 92 x [20, 43] 69 x [62, 82] 14 x [59, 87] 37 x [65, 87] 60 x [42, 81] 2 x [66, 98] 50 x [60, 66] 7 x [23, 66] 6 x [25, 84] 4 x [45, 84] 15 x [74, 84] 1 x [79, 84] 1 x [84, 92] 86 x [59, 77] 64 x [54, 56] 6 x [18, 47] 33 x [18, 86] 79 x [26, 47] 2 x [47, 52] 42 x [52, 98] 59 x [4, 35] 1 x [5, 47] 4 x [47, 100] 19 x [35, 100] 1 x [7, 23] 50 x [23, 34] 24 x [7, 41] 1 x [7] 11 x [21, 94] 1 x [21, 71] 22 x [21, 62]