Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:47:57 2012 Optimize a model with 15335 rows, 20306 columns and 65602 nonzeros Presolve removed 286 rows and 2 columns Presolve time: 0.27s Presolved: 15191 rows, 20304 columns, 84844 nonzeros Variable types: 0 continuous, 20304 integer (20304 binary) Found heuristic solution: objective 142.0000000 Root relaxation: objective 3.000000e+00, 11040 iterations, 0.82 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 (28397 simplex iterations) in 4.71 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%