Build (method = -2) #dp: 579 Step-3' Graph: 64 vertices and 185 arcs (0.00s) Step-4' Graph: 4 vertices and 65 arcs (0.00s) #V4/#V3 = 0.06 #A4/#A3 = 0.35 Ready! (0.00s) Optimize a model with 36 rows, 66 columns and 194 nonzeros Presolve removed 36 rows and 66 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 [16, 25] 1 x [16, 24] 1 x [14, 23] 3 x [9, 22] 2 x [18, 21] 1 x [14, 20] 3 x [19, 27] 1 x [8, 17] 1 x [8, 15] 1 x [7, 13] 1 x [7, 12] 1 x [6, 11] 1 x [6, 10] 1 x [4, 5] 1 x [3, 5] 1 x [1, 2] 1 x [1, 32] 1 x [30, 31] 1 x [29, 30] 1 x [26, 28]