Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:25:04 2013 Optimize a model with 71484 rows, 70644 columns and 282324 nonzeros Presolve removed 3046 rows and 0 columns Presolve time: 0.46s Presolved: 68438 rows, 70644 columns, 276232 nonzeros Variable types: 70560 continuous, 84 integer (84 binary) Root relaxation: objective 1.042874e+05, 15977 iterations, 3.35 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 104287.442 0 3 - 104287.442 - - 4s H 0 0 106091.00000 104287.442 1.70% - 4s H 0 0 104473.00000 104287.442 0.18% - 4s 0 0 104295.779 0 5 104473.000 104295.779 0.17% - 5s 0 0 104295.779 0 3 104473.000 104295.779 0.17% - 7s 0 0 104295.779 0 5 104473.000 104295.779 0.17% - 7s 0 0 104296.398 0 4 104473.000 104296.398 0.17% - 7s 0 0 104296.398 0 4 104473.000 104296.398 0.17% - 7s 0 2 104296.795 0 4 104473.000 104296.795 0.17% - 9s Cutting planes: Gomory: 4 Flow cover: 2 Explored 8 nodes (21778 simplex iterations) in 9.69 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.044730000000e+05, best bound 1.044730000000e+05, gap 0.0%