Build (method = -2) #dp: 66 Step-3' Graph: 19 vertices and 50 arcs (0.00s) Step-4' Graph: 11 vertices and 34 arcs (0.00s) #V4/#V3 = 0.58 #A4/#A3 = 0.68 Ready! (0.00s) Optimize a model with 21 rows, 35 columns and 87 nonzeros Presolve removed 8 rows and 8 columns Presolve time: 0.00s Presolved: 13 rows, 27 columns, 65 nonzeros Variable types: 0 continuous, 27 integer (3 binary) Found heuristic solution: objective 568.0000000 Found heuristic solution: objective 567.0000000 Optimize a model with 13 rows, 27 columns and 65 nonzeros Presolve removed 3 rows and 5 columns Presolved: 10 rows, 22 columns, 55 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.700e+01 Factor NZ : 5.500e+01 Factor Ops : 3.850e+02 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 7.46140477e+02 -3.63192802e+02 3.24e+02 2.78e-02 5.10e+01 0s 1 5.76650710e+02 3.72584955e+02 1.17e+01 1.67e-16 5.00e+00 0s 2 5.66584021e+02 5.40615010e+02 6.81e-02 4.44e-15 5.54e-01 0s 3 5.64933477e+02 5.62854722e+02 5.68e-14 2.22e-16 4.42e-02 0s 4 5.64047526e+02 5.63986434e+02 5.68e-14 2.22e-16 1.30e-03 0s 5 5.64000000e+02 5.64000000e+02 5.68e-14 1.11e-16 9.78e-09 0s 6 5.64000000e+02 5.64000000e+02 5.68e-14 4.72e-17 9.82e-15 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 5.64000000e+02 Root relaxation: objective 5.640000e+02, 15 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 564.0000000 564.00000 0.0% - 0s Explored 0 nodes (15 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 5.640000000000e+02, best bound 5.640000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 564 Solution: 49 x [1, 9] 241 x [2] 34 x [3] 160 x [3, 6] 1 x [3, 7, 10] 4 x [3, 10] 4 x [4, 5, 10] 69 x [4, 6, 8, 10] 2 x [4, 6, 9, 10]