Build (method = -2) #dp: 1208 Step-3' Graph: 96 vertices and 281 arcs (0.01s) Step-4' Graph: 4 vertices and 97 arcs (0.01s) #V4/#V3 = 0.04 #A4/#A3 = 0.35 Ready! (0.01s) Optimize a model with 52 rows, 98 columns and 290 nonzeros Presolve removed 52 rows and 98 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 6.000000000000e+01, best bound 6.000000000000e+01, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.00 seconds Total run time: 0.02 seconds Objective: 60 Solution: 1 x [47, 48] 2 x [28, 47] 5 x [21, 46] 2 x [22, 45] 2 x [19, 44] 1 x [16, 43] 2 x [17, 42] 4 x [25, 41] 1 x [15, 40] 1 x [10, 39] 4 x [23, 38] 2 x [16, 37] 1 x [6, 36] 4 x [7, 35] 5 x [8, 34] 2 x [15, 33] 3 x [27, 32] 2 x [13, 31] 2 x [12, 30] 2 x [10, 29] 4 x [2, 26] 1 x [6, 24] 1 x [6, 20] 1 x [4, 18] 1 x [4, 14] 1 x [4, 11] 1 x [2, 9] 1 x [2, 5] 1 x [1, 3]