Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:11:04 2012 Optimize a model with 23451 rows, 27060 columns and 96594 nonzeros Presolve removed 682 rows and 3938 columns Presolve time: 0.52s Presolved: 22769 rows, 23122 columns, 90740 nonzeros Variable types: 0 continuous, 23122 integer (23122 binary) Found heuristic solution: objective 164.0000000 Root relaxation: objective 3.000000e+00, 14052 iterations, 1.80 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% - 2s Explored 0 nodes (14052 simplex iterations) in 2.39 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%