Build (method = -2) #dp: 3095 Step-3' Graph: 155 vertices and 457 arcs (0.02s) Step-4' Graph: 4 vertices and 155 arcs (0.02s) #V4/#V3 = 0.03 #A4/#A3 = 0.34 Ready! (0.02s) Optimize a model with 81 rows, 156 columns and 465 nonzeros Presolve removed 81 rows and 156 columns Presolve time: 0.00s Explored 0 nodes (0 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 5.000000000000e+01, best bound 5.000000000000e+01, gap 0.0% Preprocessing time: 0.04 seconds Gurobi run time: 0.00 seconds Total run time: 0.04 seconds Objective: 50 Solution: 1 x [21, 29] 1 x [23, 30] 1 x [23, 56] 1 x [9, 32] 1 x [24, 45] 1 x [45, 55] 1 x [16, 33] 1 x [36, 72] 1 x [25, 71] 1 x [18, 69] 1 x [17, 62] 1 x [16, 53] 1 x [15, 59] 1 x [14, 54] 1 x [12, 47] 1 x [41, 44] 1 x [7, 43] 1 x [5, 39] 1 x [4, 32] 1 x [3, 28] 1 x [22, 52] 1 x [6, 58] 1 x [2, 57] 1 x [49, 72] 1 x [48, 71] 1 x [51, 73] 1 x [46, 69] 1 x [42, 50] 1 x [66, 70] 1 x [63, 76] 1 x [40, 62] 1 x [60, 61] 1 x [38, 59] 1 x [37, 54] 1 x [35, 47] 1 x [34, 44] 1 x [31, 43] 1 x [26, 39] 1 x [20, 32] 1 x [19, 28] 1 x [13, 27] 1 x [10, 22] 1 x [8, 11] 1 x [6, 77] 1 x [2, 75] 1 x [1, 74] 1 x [68, 73] 1 x [67, 70] 1 x [63, 65] 1 x [60, 64]