Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:49:52 2012 Optimize a model with 16819 rows, 21170 columns and 70903 nonzeros Presolve removed 318 rows and 3772 columns Presolve time: 0.35s Presolved: 16501 rows, 17398 columns, 66180 nonzeros Variable types: 0 continuous, 17398 integer (17398 binary) Found heuristic solution: objective 145.0000000 Root relaxation: objective 3.000000e+00, 11664 iterations, 0.97 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 (28177 simplex iterations) in 4.33 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%