Build (method = -2) #dp: 104 Step-3' Graph: 20 vertices and 53 arcs (0.00s) Step-4' Graph: 18 vertices and 49 arcs (0.00s) #V4/#V3 = 0.90 #A4/#A3 = 0.92 Ready! (0.00s) Optimize a model with 28 rows, 50 columns and 118 nonzeros Presolve removed 28 rows and 50 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 2.400000000000e+01, best bound 2.400000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 24 Solution: 1 x [1, 3, 5, 6, 7, 10] 1 x [1, 4, 5, 6, 7, 9] 1 x [1, 5, 6, 7, 10] 2 x [2, 3, 5, 6, 7, 9, 10] 4 x [2, 5, 6, 7, 9, 10] 14 x [3, 5, 7] 1 x [5, 8, 10]