Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:08:28 2013 Optimize a model with 73226 rows, 5776 columns and 222376 nonzeros Presolve removed 6718 rows and 2949 columns Presolve time: 0.64s Presolved: 66508 rows, 2827 columns, 201855 nonzeros Variable types: 32 continuous, 2795 integer (2795 binary) Found heuristic solution: objective 122603.00000 Root relaxation: objective 9.829159e+04, 15891 iterations, 1.65 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 98291.5852 0 8 122603.000 98291.5852 19.8% - 2s H 0 0 98305.000000 98291.5852 0.01% - 2s H 0 0 98300.000000 98291.5852 0.01% - 2s Explored 0 nodes (15918 simplex iterations) in 2.55 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.830000000000e+04, best bound 9.829200000000e+04, gap 0.0081%