Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:45:09 2012 Optimize a model with 15150 rows, 19460 columns and 64216 nonzeros Presolve removed 308 rows and 3894 columns Presolve time: 0.31s Presolved: 14842 rows, 15566 columns, 59415 nonzeros Variable types: 0 continuous, 15566 integer (15566 binary) Found heuristic solution: objective 139.0000000 Root relaxation: objective 3.000000e+00, 10011 iterations, 0.72 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3.0000000 3.00000 0.0% - 4s Explored 0 nodes (24748 simplex iterations) in 4.61 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%