Build (method = -2) #dp: 81 Step-3' Graph: 21 vertices and 56 arcs (0.00s) Step-4' Graph: 12 vertices and 38 arcs (0.00s) #V4/#V3 = 0.57 #A4/#A3 = 0.68 Ready! (0.00s) Optimize a model with 22 rows, 39 columns and 97 nonzeros Presolve removed 10 rows and 12 columns Presolve time: 0.00s Presolved: 12 rows, 27 columns, 67 nonzeros Variable types: 0 continuous, 27 integer (0 binary) Found heuristic solution: objective 619.0000000 Found heuristic solution: objective 614.0000000 Found heuristic solution: objective 613.0000000 Found heuristic solution: objective 612.0000000 Optimize a model with 12 rows, 27 columns and 67 nonzeros Presolved: 12 rows, 27 columns, 67 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.900e+01 Factor NZ : 7.800e+01 Factor Ops : 6.500e+02 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 9.90559549e+02 -1.12888690e+03 3.89e+02 1.11e-16 9.23e+01 0s 1 6.61483234e+02 1.08028964e+02 3.61e+01 3.33e-16 1.29e+01 0s 2 6.17909035e+02 4.68004312e+02 5.19e+00 4.44e-16 2.87e+00 0s 3 6.11238239e+02 5.97992561e+02 5.68e-14 1.11e-16 2.32e-01 0s 4 6.09320013e+02 6.08625454e+02 1.14e-13 2.22e-16 1.22e-02 0s 5 6.09000327e+02 6.08999388e+02 2.84e-14 1.11e-16 1.65e-05 0s 6 6.09000000e+02 6.09000000e+02 8.53e-14 3.33e-16 1.65e-11 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 6.09000000e+02 Root relaxation: objective 6.090000e+02, 17 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 609.0000000 609.00000 0.0% - 0s Explored 0 nodes (17 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 6.090000000000e+02, best bound 6.090000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 609 Solution: 132 x [1] 85 x [2] 54 x [2, 8] 94 x [3] 5 x [3, 7] 51 x [4] 56 x [4, 8, 10] 5 x [4, 10] 39 x [5, 6] 88 x [6, 9, 10]