Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:02:08 2012 Optimize a model with 20065 rows, 25122 columns and 84528 nonzeros Presolve removed 663 rows and 4584 columns Presolve time: 0.44s Presolved: 19402 rows, 20538 columns, 78120 nonzeros Variable types: 0 continuous, 20538 integer (20538 binary) Found heuristic solution: objective 158.0000000 Root relaxation: objective 3.000000e+00, 12376 iterations, 1.09 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% - 5s Explored 0 nodes (30556 simplex iterations) in 5.16 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%