Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:26:36 2012 Optimize a model with 8279 rows, 4830 columns and 29323 nonzeros Presolve removed 830 rows and 2 columns Presolve time: 0.30s Presolved: 7518 rows, 4828 columns, 31936 nonzeros Variable types: 0 continuous, 4828 integer (4828 binary) Found heuristic solution: objective 69.0000000 Root relaxation: objective 3.000000e+00, 5825 iterations, 0.62 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 56 69.00000 3.00000 95.7% - 3s H 0 0 3.0000000 3.00000 0.0% - 3s Explored 0 nodes (22925 simplex iterations) in 3.67 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%