Build (method = -2) #dp: 48 Step-3' Graph: 11 vertices and 29 arcs (0.00s) Step-4' Graph: 6 vertices and 19 arcs (0.00s) #V4/#V3 = 0.55 #A4/#A3 = 0.66 Ready! (0.00s) Optimize a model with 16 rows, 20 columns and 53 nonzeros Presolve removed 16 rows and 20 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 8.100000000000e+01, best bound 8.100000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 81 Solution: 4 x [9] 22 x [5] 4 x [10] 12 x [3] 3 x [3, 4] 20 x [7] 5 x [1, 8] 1 x [2, 6] 10 x [6, 6]