Build (method = -2) #dp: 46 Step-3' Graph: 14 vertices and 35 arcs (0.00s) Step-4' Graph: 8 vertices and 23 arcs (0.00s) #V4/#V3 = 0.57 #A4/#A3 = 0.66 Ready! (0.00s) Optimize a model with 18 rows, 24 columns and 60 nonzeros Presolve removed 13 rows and 17 columns Presolve time: 0.00s Presolved: 5 rows, 7 columns, 15 nonzeros Variable types: 0 continuous, 7 integer (0 binary) Found heuristic solution: objective 56.0000000 Found heuristic solution: objective 54.0000000 Optimize a model with 5 rows, 7 columns and 15 nonzeros Presolve removed 5 rows and 7 columns Presolve: All rows and columns removed Root relaxation: cutoff, 0 iterations, 0.00 seconds 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 5.400000000000e+01, best bound 5.400000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 54 Solution: 11 x [1, 9] 9 x [2, 10] 1 x [3] 4 x [3, 9] 10 x [4] 14 x [5, 8] 1 x [6] 2 x [6, 7, 10] 2 x [6, 8, 10]