Build (method = -2) #dp: 1171 Step-3' Graph: 94 vertices and 275 arcs (0.01s) Step-4' Graph: 4 vertices and 95 arcs (0.01s) #V4/#V3 = 0.04 #A4/#A3 = 0.35 Ready! (0.01s) Optimize a model with 51 rows, 96 columns and 284 nonzeros Presolve removed 51 rows and 96 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 2.500000000000e+01, best bound 2.500000000000e+01, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.00 seconds Total run time: 0.02 seconds Objective: 25 Solution: 1 x [19, 42] 1 x [17, 19] 1 x [15, 23] 1 x [14, 23] 1 x [13, 29] 1 x [8, 28] 1 x [4, 27] 1 x [1, 26] 1 x [20, 30] 1 x [18, 44] 1 x [16, 41] 1 x [12, 38] 1 x [11, 37] 1 x [10, 43] 1 x [5, 34] 1 x [3, 33] 1 x [3, 32] 1 x [2, 31] 1 x [25, 47] 1 x [24, 46] 1 x [22, 45] 1 x [21, 40] 1 x [9, 39] 1 x [7, 36] 1 x [6, 35]