Build (method = -2) #dp: 1384 Step-3' Graph: 107 vertices and 313 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 321 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 3.000000000000e+01, best bound 3.000000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 30 Solution: 1 x [26, 48] 1 x [2, 43] 1 x [15, 41] 1 x [5, 38] 1 x [4, 12] 1 x [2, 31] 1 x [30, 51] 1 x [29, 50] 1 x [24, 42] 1 x [23, 37] 1 x [27, 39] 1 x [19, 25] 1 x [11, 22] 1 x [9, 21] 1 x [20, 40] 1 x [16, 18] 1 x [17, 53] 1 x [15, 49] 1 x [10, 47] 1 x [8, 46] 1 x [7, 45] 1 x [6, 44] 1 x [5, 36] 1 x [4, 35] 1 x [3, 34] 1 x [2, 33] 1 x [1, 32] 1 x [28, 52] 1 x [14, 51] 1 x [13, 50]