Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:53:05 2012 Optimize a model with 18449 rows, 22650 columns and 77248 nonzeros Presolve removed 627 rows and 3752 columns Presolve time: 0.39s Presolved: 17822 rows, 18898 columns, 71760 nonzeros Variable types: 0 continuous, 18898 integer (18898 binary) Found heuristic solution: objective 150.0000000 Root relaxation: objective 3.000000e+00, 11006 iterations, 0.92 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% - 7s Explored 0 nodes (25878 simplex iterations) in 7.33 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%