Build (method = -2) #dp: 57 Step-3' Graph: 15 vertices and 38 arcs (0.00s) Step-4' Graph: 8 vertices and 24 arcs (0.00s) #V4/#V3 = 0.53 #A4/#A3 = 0.63 Ready! (0.00s) Optimize a model with 18 rows, 25 columns and 63 nonzeros Presolve removed 18 rows and 25 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 8.400000000000e+01, best bound 8.400000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 84 Solution: 3 x [1] 15 x [2] 5 x [3] 4 x [3, 9] 2 x [3, 10] 9 x [4, 8] 13 x [5] 1 x [5, 8] 19 x [6] 13 x [7]