Build (method = -2) #dp: 2224 Step-3' Graph: 67 vertices and 267 arcs (0.01s) Step-4' Graph: 15 vertices and 163 arcs (0.01s) #V4/#V3 = 0.22 #A4/#A3 = 0.61 Ready! (0.01s) Optimize a model with 95 rows, 164 columns and 467 nonzeros Presolve removed 23 rows and 23 columns Presolve time: 0.00s Presolved: 72 rows, 141 columns, 400 nonzeros Variable types: 0 continuous, 141 integer (0 binary) Found heuristic solution: objective 5708.0000000 Found heuristic solution: objective 4529.0000000 Found heuristic solution: objective 4392.0000000 Optimize a model with 72 rows, 141 columns and 400 nonzeros Presolved: 72 rows, 141 columns, 400 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.410e+02 Factor NZ : 1.091e+03 Factor Ops : 2.184e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.21683818e+05 -4.28120516e+04 2.21e+04 2.22e-16 1.24e+03 0s 1 1.87862065e+04 -1.03273838e+04 1.66e+03 3.33e-15 1.29e+02 0s 2 5.12173865e+03 -2.33905081e+02 5.34e+01 5.11e-15 1.63e+01 0s 3 3.23372715e+03 2.19614430e+03 5.08e-02 2.66e-15 3.04e+00 0s 4 2.88484860e+03 2.63772105e+03 4.67e-03 1.76e-15 7.25e-01 0s 5 2.86072128e+03 2.84498868e+03 3.23e-04 2.52e-15 4.61e-02 0s 6 2.85600676e+03 2.85596828e+03 6.91e-07 2.00e-15 1.13e-04 0s 7 2.85600000e+03 2.85600000e+03 5.34e-12 2.73e-15 1.25e-10 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 2.85600000e+03 Root relaxation: objective 2.856000e+03, 86 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 2856.0000000 2856.00000 0.0% - 0s Explored 0 nodes (86 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.856000000000e+03, best bound 2.856000000000e+03, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 2856 Solution: 48 x [10, 35] 42 x [10, 77] 52 x [69, 76] 71 x [29, 56] 27 x [62, 65] 2 x [21, 23] 1 x [21, 29] 27 x [14, 20] 55 x [33, 70] 2 x [3, 63] 1 x [44, 63] 15 x [63, 76] 90 x [1, 38] 5 x [38, 62] 89 x [26, 32] 64 x [23, 58] 3 x [39, 75] 1 x [39, 54] 33 x [33, 39] 6 x [17, 37] 10 x [17, 78] 57 x [11, 20] 77 x [9, 15] 76 x [2, 4] 5 x [67, 79] 7 x [15, 79] 9 x [10, 79] 92 x [68, 73] 84 x [49, 60] 83 x [5, 16] 87 x [43, 48] 2 x [7, 43] 3 x [43, 66] 69 x [28, 42] 73 x [51, 61] 10 x [27, 51] 1 x [28, 62] 5 x [27, 68] 7 x [27, 49] 16 x [27, 34] 28 x [27, 46] 2 x [20, 27] 72 x [66, 74] 72 x [30, 64] 73 x [7, 41] 80 x [31, 71] 66 x [44, 47] 71 x [37, 59] 77 x [24, 53] 91 x [40, 72] 5 x [7, 72] 4 x [7, 36] 15 x [7, 24] 1 x [7, 29] 79 x [22, 52] 83 x [8, 36] 71 x [19, 57] 78 x [18, 45] 82 x [34, 80] 87 x [6, 67] 73 x [50, 75] 6 x [12, 54] 94 x [12, 13] 73 x [55, 78] 66 x [3, 25]