Build (method = -2) #dp: 12464 Step-3' Graph: 203 vertices and 657 arcs (0.05s) Step-4' Graph: 40 vertices and 331 arcs (0.05s) #V4/#V3 = 0.20 #A4/#A3 = 0.50 Ready! (0.05s) Optimize a model with 197 rows, 332 columns and 920 nonzeros Presolve removed 145 rows and 182 columns Presolve time: 0.00s Presolved: 52 rows, 150 columns, 358 nonzeros Variable types: 0 continuous, 150 integer (42 binary) Found heuristic solution: objective 95.0000000 Optimize a model with 52 rows, 150 columns and 358 nonzeros Presolve removed 0 rows and 1 columns Presolved: 52 rows, 149 columns, 356 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.010e+02 Factor NZ : 6.310e+02 Factor Ops : 1.004e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 4.46976787e+03 -4.27909984e+03 1.36e+03 2.22e-16 8.47e+01 0s 1 9.06585878e+02 -1.33754202e+03 1.83e+02 8.88e-16 1.28e+01 0s 2 1.56549739e+02 -1.60692864e+02 4.66e+00 4.71e-14 1.11e+00 0s 3 1.09468417e+02 2.09067544e+01 9.58e-02 1.35e-14 2.84e-01 0s 4 9.17185133e+01 7.96929596e+01 4.07e-03 2.66e-15 3.85e-02 0s 5 9.00148938e+01 8.98401513e+01 8.05e-05 2.66e-15 5.60e-04 0s 6 9.00000000e+01 8.99999997e+01 2.42e-10 3.11e-15 1.08e-09 0s 7 9.00000000e+01 9.00000000e+01 2.08e-13 2.22e-15 1.40e-15 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 9.00000000e+01 Root relaxation: objective 9.000000e+01, 70 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 90.0000000 90.00000 0.0% - 0s Explored 0 nodes (70 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 9.000000000000e+01, best bound 9.000000000000e+01, gap 0.0% Preprocessing time: 0.06 seconds Gurobi run time: 0.01 seconds Total run time: 0.07 seconds Objective: 90 Solution: 1 x [76, 145] 1 x [78, 105] 1 x [57, 75] 2 x [77, 98] 1 x [82, 97] 1 x [90, 93] 2 x [67, 92] 1 x [81, 91] 1 x [80, 89] 1 x [88, 95] 1 x [86, 96] 1 x [85, 100] 1 x [79, 103] 2 x [70, 102] 1 x [106, 139] 1 x [104, 126] 1 x [73, 107] 1 x [72, 109] 1 x [71, 108] 1 x [66, 69] 1 x [65, 68] 1 x [3, 113] 1 x [63, 114] 1 x [62, 112] 1 x [60, 61] 2 x [59, 110] 1 x [58, 118] 1 x [47, 56] 1 x [55, 119] 1 x [46, 54] 1 x [42, 52] 1 x [36, 50] 1 x [49, 123] 1 x [34, 48] 1 x [32, 94] 1 x [41, 127] 1 x [40, 129] 1 x [28, 51] 1 x [26, 37] 2 x [33, 128] 2 x [31, 101] 1 x [30, 134] 2 x [27, 136] 1 x [138, 144] 2 x [23, 43] 1 x [21, 132] 1 x [19, 131] 1 x [22, 83] 1 x [14, 147] 1 x [11, 22] 1 x [17, 44] 1 x [7, 16] 2 x [6, 148] 1 x [5, 12] 1 x [4, 10] 1 x [1, 154] 1 x [8, 157] 1 x [2, 156] 1 x [9, 155] 1 x [13, 153] 1 x [12, 152] 1 x [15, 151] 1 x [20, 150] 1 x [18, 149] 1 x [130, 146] 1 x [26, 143] 1 x [25, 142] 1 x [24, 141] 1 x [137, 140] 1 x [133, 135] 1 x [29, 125] 1 x [35, 124] 1 x [39, 122] 1 x [38, 121] 1 x [45, 120] 1 x [53, 117] 2 x [111, 116] 1 x [64, 115] 1 x [74, 99] 1 x [84, 87]