Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:02:36 2013 Optimize a model with 725 rows, 6618 columns and 376445 nonzeros Presolve removed 155 rows and 834 columns Presolve time: 1.20s Presolved: 570 rows, 5784 columns, 321304 nonzeros Variable types: 0 continuous, 5784 integer (5784 binary) Found heuristic solution: objective 3688.0000000 Root relaxation: objective 3.165000e+03, 1241 iterations, 0.14 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3165.0000000 3165.00000 0.0% - 1s Explored 0 nodes (1241 simplex iterations) in 1.39 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.165000000000e+03, best bound 3.165000000000e+03, gap 0.0%