Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:47:18 2012 Optimize a model with 16045 rows, 20306 columns and 67732 nonzeros Presolve removed 309 rows and 3268 columns Presolve time: 0.33s Presolved: 15736 rows, 17038 columns, 63534 nonzeros Variable types: 0 continuous, 17038 integer (17038 binary) Found heuristic solution: objective 142.0000000 Root relaxation: objective 3.000000e+00, 11032 iterations, 0.72 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 20 142.00000 3.00000 97.9% - 4s H 0 0 3.0000000 3.00000 0.0% - 4s Explored 0 nodes (31835 simplex iterations) in 4.48 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%