Build (method = -2) #dp: 45 Step-3' Graph: 13 vertices and 35 arcs (0.00s) Step-4' Graph: 4 vertices and 17 arcs (0.00s) #V4/#V3 = 0.31 #A4/#A3 = 0.49 Ready! (0.00s) Optimize a model with 14 rows, 18 columns and 51 nonzeros Presolve removed 14 rows and 18 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 6.800000000000e+01, best bound 6.800000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 68 Solution: 4 x [4] 10 x [10] 7 x [7] 14 x [2] 1 x [3] 14 x [5, 8] 3 x [5, 9] 1 x [1, 5] 5 x [5, 6] 9 x [5, 5]