Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:55:26 2012 Optimize a model with 20348 rows, 23562 columns and 83842 nonzeros Presolve removed 336 rows and 4286 columns Presolve time: 0.46s Presolved: 20012 rows, 19276 columns, 78531 nonzeros Variable types: 0 continuous, 19276 integer (19276 binary) Found heuristic solution: objective 153.0000000 Root relaxation: objective 3.000000e+00, 12592 iterations, 1.24 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% - 5s Explored 0 nodes (28737 simplex iterations) in 5.20 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%