Build (method = -2) #dp: 1398 Step-3' Graph: 106 vertices and 311 arcs (0.01s) Step-4' Graph: 4 vertices and 107 arcs (0.01s) #V4/#V3 = 0.04 #A4/#A3 = 0.34 Ready! (0.01s) Optimize a model with 57 rows, 108 columns and 320 nonzeros Presolve removed 57 rows and 108 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: 0.02 seconds Gurobi run time: 0.00 seconds Total run time: 0.02 seconds Objective: 50 Solution: 1 x [24, 53] 1 x [22, 52] 2 x [32, 51] 3 x [29, 50] 2 x [27, 49] 2 x [26, 48] 2 x [25, 47] 1 x [18, 46] 4 x [17, 45] 1 x [17, 44] 2 x [24, 43] 2 x [22, 42] 2 x [19, 41] 1 x [15, 40] 1 x [15, 39] 2 x [18, 38] 1 x [15, 37] 2 x [16, 36] 1 x [14, 35] 1 x [14, 34] 2 x [16, 33] 1 x [11, 31] 3 x [28, 30] 1 x [11, 23] 1 x [8, 21] 1 x [8, 20] 1 x [7, 13] 1 x [7, 12] 1 x [5, 10] 1 x [5, 9] 1 x [4, 6] 1 x [3, 4] 1 x [1, 2]