Gurobi 5.0.1 (linux64) logging started Mon Feb 4 18:51:25 2013 Optimize a model with 10700 rows, 1600 columns and 32800 nonzeros Presolve removed 1804 rows and 834 columns Presolve time: 0.07s Presolved: 8896 rows, 766 columns, 27204 nonzeros Variable types: 14 continuous, 752 integer (752 binary) Found heuristic solution: objective 41723.000000 Root relaxation: objective 3.553862e+04, 2026 iterations, 0.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 35538.6154 0 3 41723.0000 35538.6154 14.8% - 0s H 0 0 35541.000000 35538.6154 0.01% - 0s Explored 0 nodes (2031 simplex iterations) in 0.18 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.554100000000e+04, best bound 3.553900000000e+04, gap 0.0056%