Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:12:39 2013 Optimize a model with 85400 rows, 6400 columns and 259200 nonzeros Presolve removed 6622 rows and 3255 columns Presolve time: 0.81s Presolved: 78778 rows, 3145 columns, 238644 nonzeros Variable types: 30 continuous, 3115 integer (3115 binary) Found heuristic solution: objective 126704.00000 Root relaxation: objective 9.767386e+04, 16527 iterations, 1.87 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 97673.8590 0 14 126704.000 97673.8590 22.9% - 3s H 0 0 97687.000000 97673.8590 0.01% - 3s H 0 0 97682.000000 97673.8590 0.01% - 3s Explored 0 nodes (16617 simplex iterations) in 3.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.768200000000e+04, best bound 9.767400000000e+04, gap 0.0082%