Gurobi 5.0.1 (linux64) logging started Fri Nov 16 19:51:21 2012 Optimize a model with 12313 rows, 17292 columns and 53577 nonzeros Presolve removed 299 rows and 4587 columns Presolve time: 0.23s Presolved: 12014 rows, 12705 columns, 48153 nonzeros Variable types: 0 continuous, 12705 integer (12705 binary) Found heuristic solution: objective 131.0000000 Root relaxation: objective 3.000000e+00, 8548 iterations, 0.55 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 (23066 simplex iterations) in 2.51 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%