Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:02:01 2012 Optimize a model with 11988 rows, 6642 columns and 42282 nonzeros Presolve removed 1135 rows and 81 columns Presolve time: 0.22s Presolved: 10853 rows, 6561 columns, 39447 nonzeros Variable types: 0 continuous, 6561 integer (6561 binary) Found heuristic solution: objective 48.0000000 Root relaxation: objective 3.000000e+00, 11059 iterations, 1.83 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% - 3s Explored 0 nodes (18714 simplex iterations) in 3.44 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%