Build (method = -2) #dp: 1083 Step-3' Graph: 90 vertices and 263 arcs (0.00s) Step-4' Graph: 4 vertices and 91 arcs (0.00s) #V4/#V3 = 0.04 #A4/#A3 = 0.35 Ready! (0.00s) Optimize a model with 49 rows, 92 columns and 272 nonzeros Presolve removed 49 rows and 92 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: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 25 Solution: 1 x [34, 38] 1 x [30, 37] 1 x [29, 33] 1 x [29, 31] 1 x [16, 25] 1 x [20, 32] 1 x [9, 18] 1 x [8, 15] 1 x [5, 39] 1 x [3, 10] 1 x [1, 7] 1 x [6, 44] 1 x [4, 35] 1 x [2, 26] 1 x [24, 45] 1 x [23, 28] 1 x [22, 41] 1 x [22, 40] 1 x [22, 36] 1 x [19, 27] 1 x [11, 19] 1 x [14, 21] 1 x [13, 17] 1 x [13, 43] 1 x [12, 42]