Build (method = -2) #dp: 1228 Step-3' Graph: 195 vertices and 578 arcs (0.01s) Step-4' Graph: 33 vertices and 254 arcs (0.01s) #V4/#V3 = 0.17 #A4/#A3 = 0.44 Ready! (0.01s) Optimize a model with 153 rows, 255 columns and 703 nonzeros Presolve removed 115 rows and 117 columns Presolve time: 0.00s Presolved: 38 rows, 138 columns, 368 nonzeros Variable types: 0 continuous, 138 integer (106 binary) Found heuristic solution: objective 109.0000000 Found heuristic solution: objective 108.0000000 Optimize a model with 38 rows, 138 columns and 368 nonzeros Presolved: 38 rows, 138 columns, 368 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.980e+02 Factor NZ : 5.910e+02 Factor Ops : 1.122e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.57154722e+02 -4.27149362e+01 1.79e+02 2.47e-01 3.65e+00 0s 1 1.24394106e+02 4.92678563e+01 2.65e+01 4.44e-16 6.54e-01 0s 2 1.11949559e+02 9.21533578e+01 2.86e+00 2.50e-16 1.00e-01 0s 3 1.08513168e+02 1.01477139e+02 1.37e-02 2.50e-16 2.55e-02 0s 4 1.07101983e+02 1.04821332e+02 1.42e-03 2.22e-16 8.24e-03 0s 5 1.06569622e+02 1.05964840e+02 2.47e-04 2.22e-16 2.19e-03 0s 6 1.06471271e+02 1.06307276e+02 3.52e-05 1.36e-16 5.92e-04 0s 7 1.06448814e+02 1.06431255e+02 7.08e-06 2.22e-16 6.34e-05 0s 8 1.06444449e+02 1.06444431e+02 1.02e-14 2.26e-16 6.51e-08 0s 9 1.06444444e+02 1.06444444e+02 1.35e-14 2.22e-16 6.52e-14 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 1.06444444e+02 Root relaxation: objective 1.064444e+02, 38 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 106.44444 0 17 108.00000 106.44444 1.44% - 0s H 0 0 107.0000000 106.44444 0.52% - 0s Explored 0 nodes (59 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.070000000000e+02, best bound 1.070000000000e+02, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.01 seconds Total run time: 0.03 seconds Objective: 107 Solution: 1 x [48] 1 x [84] 1 x [114] 1 x [23] 1 x [107] 1 x [11] 1 x [77] 1 x [40] 1 x [86] 1 x [119] 1 x [75] 1 x [79] 1 x [87] 1 x [5] 1 x [26] 1 x [25] 1 x [41] 1 x [108] 1 x [61] 1 x [68] 1 x [44] 1 x [53] 1 x [64] 1 x [36] 1 x [9] 1 x [37] 1 x [91] 1 x [10] 1 x [27] 1 x [14] 1 x [31] 1 x [47] 1 x [51] 1 x [71] 1 x [74] 1 x [1, 57] 1 x [98] 1 x [46, 104] 1 x [24] 1 x [59] 1 x [2, 100] 1 x [83] 1 x [93] 1 x [105] 1 x [113] 1 x [58] 1 x [106] 1 x [101, 111] 1 x [62] 1 x [34, 97] 1 x [17] 1 x [67] 1 x [3] 1 x [13] 1 x [99] 1 x [19] 1 x [82] 1 x [102] 1 x [32] 1 x [118] 1 x [88] 1 x [73, 78] 1 x [56] 1 x [90] 1 x [22] 1 x [30] 1 x [8] 1 x [65, 92, 115] 1 x [117] 1 x [72, 116] 1 x [45] 1 x [15] 1 x [29] 1 x [52] 1 x [69] 1 x [42] 1 x [54] 1 x [20] 1 x [4] 1 x [60] 1 x [109] 1 x [16] 1 x [12] 1 x [50] 1 x [80] 1 x [38] 1 x [43] 1 x [76] 1 x [94] 1 x [33, 110, 120] 1 x [112] 1 x [70] 1 x [89] 1 x [103] 1 x [63] 1 x [95] 1 x [81] 1 x [21] 1 x [55] 1 x [6] 1 x [7] 1 x [18] 1 x [28] 1 x [39] 1 x [35] 1 x [66] 1 x [49, 85, 96]