Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:02:59 2013 Optimize a model with 1070 rows, 3260 columns and 8505 nonzeros Presolve removed 10 rows and 15 columns Presolve time: 0.17s Presolved: 1060 rows, 3245 columns, 6490 nonzeros Variable types: 2250 continuous, 995 integer (995 binary) Root relaxation: objective 1.309958e+04, 58 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 13099.5797 0 1 - 13099.5797 - - 0s 0 0 13099.8753 0 2 - 13099.8753 - - 0s 0 0 13099.8753 0 2 - 13099.8753 - - 0s H 0 0 13293.354531 13099.8753 1.46% - 0s 0 2 13102.8684 0 2 13293.3545 13102.8684 1.43% - 0s * 11 2 11 13130.103286 13130.1033 0.0% 1.5 0s Cutting planes: Gomory: 1 Flow cover: 1 Explored 12 nodes (283 simplex iterations) in 0.40 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.313010328625e+04, best bound 1.313010328625e+04, gap 0.0%