Build (method = -2) #dp: 10401 Step-3' Graph: 166 vertices and 1494 arcs (0.05s) Step-4' Graph: 101 vertices and 1364 arcs (0.05s) #V4/#V3 = 0.61 #A4/#A3 = 0.91 Ready! (0.05s) Optimize a model with 189 rows, 1365 columns and 3898 nonzeros Presolve removed 27 rows and 31 columns Presolve time: 0.02s Presolved: 162 rows, 1334 columns, 3822 nonzeros Variable types: 0 continuous, 1334 integer (340 binary) Found heuristic solution: objective 167.0000000 Optimize a model with 162 rows, 1334 columns and 3822 nonzeros Presolved: 162 rows, 1334 columns, 3822 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.087e+03 Factor NZ : 5.691e+03 Factor Ops : 3.021e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.80191745e+04 -2.86293137e+04 1.76e+04 2.26e-01 1.34e+02 0s 1 4.07373056e+03 -5.52835647e+03 2.66e+03 6.66e-16 2.05e+01 0s 2 5.05461245e+02 -1.85499007e+03 1.73e+02 7.11e-15 1.91e+00 0s 3 2.18281372e+02 -6.78541162e+02 2.50e+01 1.89e-15 4.42e-01 0s 4 1.25398148e+02 -1.47354868e+02 2.42e+00 1.11e-15 1.07e-01 0s 5 9.88613905e+01 -4.92528422e+01 1.19e+00 4.44e-16 5.68e-02 0s 6 8.19030783e+01 1.62004864e+01 4.68e-01 3.33e-16 2.47e-02 0s 7 7.36925860e+01 5.24978032e+01 1.67e-01 3.33e-16 7.87e-03 0s 8 7.00913074e+01 6.22083093e+01 2.28e-02 2.22e-16 2.91e-03 0s 9 6.92519133e+01 6.74275971e+01 1.83e-03 3.33e-16 6.72e-04 0s 10 6.90835145e+01 6.84268707e+01 3.40e-04 2.48e-16 2.42e-04 0s 11 6.90393845e+01 6.89450165e+01 7.69e-05 3.33e-16 3.47e-05 0s 12 6.90203519e+01 6.90187527e+01 2.31e-07 3.33e-16 5.89e-07 0s 13 6.90200000e+01 6.90200000e+01 9.59e-13 3.33e-16 2.68e-12 0s Barrier solved model in 13 iterations and 0.02 seconds Optimal objective 6.90200000e+01 Root relaxation: objective 6.902000e+01, 826 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 69.02000 0 44 167.00000 69.02000 58.7% - 0s H 0 0 71.0000000 69.02000 2.79% - 0s H 0 0 70.0000000 69.02000 1.40% - 0s Explored 0 nodes (1962 simplex iterations) in 0.17 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 7.000000000000e+01, best bound 7.000000000000e+01, gap 0.0% Preprocessing time: 0.07 seconds Gurobi run time: 0.17 seconds Total run time: 0.24 seconds Objective: 70 Solution: 1 x [6, 37, 88] 1 x [13, 32, 87] 2 x [15, 30, 86] 2 x [17, 28, 86] 1 x [18, 27, 86] 1 x [22, 23, 86] 2 x [45, 85] 1 x [16, 30, 85] 1 x [17, 30, 84] 1 x [17, 31, 83] 3 x [47, 82] 1 x [11, 38, 82] 1 x [13, 36, 82] 1 x [14, 36, 81] 1 x [50, 80] 1 x [18, 33, 80] 1 x [22, 29, 80] 1 x [19, 33, 79] 1 x [10, 43, 78] 3 x [20, 34, 77] 1 x [54, 76] 1 x [12, 43, 76] 1 x [1, 54, 75] 1 x [4, 50, 75] 1 x [8, 46, 75] 1 x [11, 44, 75] 2 x [16, 41, 74] 1 x [27, 28, 74] 2 x [4, 52, 73] 1 x [5, 52, 72] 1 x [8, 49, 72] 1 x [19, 72] 1 x [2, 56, 71] 1 x [6, 52, 71] 1 x [1, 59, 70] 2 x [2, 58, 70] 1 x [24, 70] 1 x [13, 70] 2 x [25, 35, 69] 1 x [21, 42, 68] 2 x [3, 59, 67] 1 x [17, 46, 66] 1 x [9, 55, 65] 1 x [9, 56, 64] 1 x [14, 51, 64] 1 x [3, 63, 63] 1 x [26, 41, 62] 1 x [7, 61, 61] 1 x [26, 42, 60] 3 x [32, 40, 57] 1 x [35, 36, 57] 1 x [21, 48, 56] 1 x [35, 40, 54] 1 x [31, 44, 53] 1 x [38, 39, 52] 1 x [32, 47, 48]