Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:21:46 2012 Optimize a model with 6271 rows, 4160 columns and 22654 nonzeros Presolve removed 1090 rows and 2 columns Presolve time: 0.20s Presolved: 5245 rows, 4158 columns, 23900 nonzeros Variable types: 0 continuous, 4158 integer (4158 binary) Found heuristic solution: objective 63.0000000 Root relaxation: objective 3.000000e+00, 3798 iterations, 0.29 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% - 0s Explored 0 nodes (6374 simplex iterations) in 0.77 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%