Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:47:16 2012 Optimize a model with 15903 rows, 20306 columns and 67306 nonzeros Presolve removed 313 rows and 3836 columns Presolve time: 0.32s Presolved: 15590 rows, 16470 columns, 62542 nonzeros Variable types: 0 continuous, 16470 integer (16470 binary) Found heuristic solution: objective 142.0000000 Root relaxation: objective 3.000000e+00, 10593 iterations, 0.64 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% - 1s Explored 0 nodes (25157 simplex iterations) in 1.44 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%