Build (method = -2) #dp: 82 Step-3' Graph: 17 vertices and 44 arcs (0.00s) Step-4' Graph: 16 vertices and 42 arcs (0.00s) #V4/#V3 = 0.94 #A4/#A3 = 0.95 Ready! (0.00s) Optimize a model with 25 rows, 43 columns and 101 nonzeros Presolve removed 25 rows and 43 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 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 17 Solution: 1 x [1, 2, 3, 5, 6, 9] 11 x [1, 4, 5, 6, 7, 8, 9] 1 x [1, 9] 3 x [5, 6, 7, 9] 1 x [6, 8, 9]