Build (method = -2) #dp: 1032 Step-3' Graph: 90 vertices and 262 arcs (0.01s) Step-4' Graph: 4 vertices and 90 arcs (0.01s) #V4/#V3 = 0.04 #A4/#A3 = 0.34 Ready! (0.01s) Optimize a model with 48 rows, 91 columns and 270 nonzeros Presolve removed 48 rows and 91 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: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 60 Solution: 1 x [44, 44] 2 x [17, 43] 4 x [19, 42] 1 x [27, 41] 1 x [25, 40] 4 x [18, 39] 3 x [20, 38] 3 x [13, 37] 2 x [12, 36] 2 x [10, 35] 5 x [21, 34] 4 x [16, 33] 2 x [2, 32] 4 x [11, 31] 3 x [9, 30] 2 x [1, 29] 1 x [25, 28] 4 x [6, 27] 3 x [7, 26] 4 x [5, 24] 1 x [15, 23] 1 x [14, 23] 1 x [8, 23] 1 x [4, 22] 1 x [3, 22]