Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:58:50 2012 Optimize a model with 6431 rows, 11990 columns and 30847 nonzeros Presolve removed 474 rows and 4142 columns Presolve time: 0.15s Presolved: 5957 rows, 7848 columns, 25615 nonzeros Variable types: 0 continuous, 7848 integer (7848 binary) Found heuristic solution: objective 24.0000000 Root relaxation: objective 3.000000e+00, 8197 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 (11570 simplex iterations) in 0.67 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%