Build (method = -2) #dp: 1896 Step-3' Graph: 54 vertices and 468 arcs (0.00s) Step-4' Graph: 54 vertices and 468 arcs (0.01s) #V4/#V3 = 1.00 #A4/#A3 = 1.00 Ready! (0.01s) Optimize a model with 122 rows, 469 columns and 1306 nonzeros Presolve removed 44 rows and 50 columns Presolve time: 0.01s Presolved: 78 rows, 419 columns, 1162 nonzeros Variable types: 0 continuous, 419 integer (77 binary) Found heuristic solution: objective 189.0000000 Found heuristic solution: objective 179.0000000 Optimize a model with 78 rows, 419 columns and 1162 nonzeros Presolved: 78 rows, 419 columns, 1162 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 5.860e+02 Factor NZ : 1.406e+03 Factor Ops : 3.023e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.13740032e+03 -2.63680950e+03 6.88e+03 1.89e-01 3.46e+01 0s 1 6.89872583e+02 -1.02278361e+03 1.22e+03 1.44e-15 6.60e+00 0s 2 2.05682284e+02 -2.79707136e+02 6.20e+01 9.44e-16 7.49e-01 0s 3 1.54232493e+02 3.64373406e+01 4.26e+00 6.66e-16 1.44e-01 0s 4 1.34543563e+02 7.93116527e+01 1.17e+00 7.77e-16 6.56e-02 0s 5 1.20814634e+02 1.08963436e+02 1.71e-01 6.80e-16 1.40e-02 0s 6 1.18916974e+02 1.15482600e+02 8.82e-02 7.77e-16 4.06e-03 0s 7 1.17914959e+02 1.16498156e+02 1.69e-02 8.77e-16 1.66e-03 0s 8 1.17543177e+02 1.17402178e+02 1.14e-03 7.75e-16 1.64e-04 0s 9 1.17500137e+02 1.17499600e+02 2.87e-06 7.17e-16 6.26e-07 0s 10 1.17500000e+02 1.17500000e+02 3.55e-12 8.94e-16 6.26e-10 0s 11 1.17500000e+02 1.17500000e+02 1.08e-13 7.47e-16 6.43e-16 0s Barrier solved model in 11 iterations and 0.01 seconds Optimal objective 1.17500000e+02 Root relaxation: objective 1.175000e+02, 75 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 117.50000 0 7 179.00000 117.50000 34.4% - 0s H 0 0 118.0000000 117.50000 0.42% - 0s Explored 0 nodes (100 simplex iterations) in 0.02 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.180000000000e+02, best bound 1.180000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.02 seconds Total run time: 0.03 seconds Objective: 118 Solution: 1 x [68] 3 x [67] 2 x [66] 1 x [65] 4 x [64] 3 x [63] 3 x [62] 8 x [61] 3 x [60] 2 x [59] 2 x [58] 3 x [1, 57] 5 x [56] 2 x [2, 55] 2 x [5, 54] 1 x [4, 54] 3 x [3, 54] 1 x [1, 54] 1 x [6, 53] 2 x [7, 52] 2 x [8, 51] 1 x [7, 51] 4 x [8, 50] 2 x [10, 49] 4 x [11, 48] 3 x [13, 47] 1 x [11, 47] 3 x [14, 46] 1 x [9, 46] 1 x [15, 45] 2 x [12, 45] 2 x [16, 44] 2 x [17, 43] 2 x [18, 42] 2 x [17, 41] 2 x [20, 40] 4 x [20, 39] 3 x [19, 38] 5 x [21, 37] 2 x [22, 36] 1 x [18, 36] 1 x [24, 35] 1 x [23, 35] 1 x [21, 35] 1 x [17, 35] 3 x [25, 34] 1 x [26, 33] 2 x [27, 32] 1 x [27, 31] 1 x [30] 1 x [29, 30] 2 x [26, 28] 1 x [7, 7, 12] 1 x [6, 6, 12]