Gurobi 5.0.1 (linux64) logging started Fri Nov 16 19:51:00 2012 Optimize a model with 13493 rows, 17292 columns and 57247 nonzeros Presolve removed 548 rows and 3144 columns Presolve time: 0.27s Presolved: 12945 rows, 14148 columns, 52793 nonzeros Variable types: 0 continuous, 14148 integer (14148 binary) Found heuristic solution: objective 50.0000000 Root relaxation: objective 3.000000e+00, 13879 iterations, 1.09 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% - 2s Explored 0 nodes (22025 simplex iterations) in 2.70 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%