Build (method = -2) #dp: 596 Step-3' Graph: 66 vertices and 191 arcs (0.00s) Step-4' Graph: 4 vertices and 67 arcs (0.00s) #V4/#V3 = 0.06 #A4/#A3 = 0.35 Ready! (0.00s) Optimize a model with 37 rows, 68 columns and 200 nonzeros Presolve removed 37 rows and 68 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 [3, 19] 2 x [2, 21] 1 x [1, 19] 1 x [18, 33] 1 x [18, 32] 1 x [15, 31] 3 x [22, 30] 1 x [15, 29] 1 x [14, 28] 1 x [14, 27] 2 x [20, 26] 1 x [9, 25] 1 x [9, 24] 1 x [8, 23] 1 x [8, 17] 1 x [6, 16] 1 x [6, 13] 1 x [6, 12] 1 x [5, 11] 1 x [5, 10] 1 x [4, 7]