Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:10:33 2013 Optimize a model with 806 rows, 9052 columns and 480989 nonzeros Presolve time: 0.54s Presolved: 806 rows, 9052 columns, 481133 nonzeros Variable types: 0 continuous, 9052 integer (9052 binary) Found heuristic solution: objective 5450.0000000 Found heuristic solution: objective 4121.0000000 Root relaxation: objective 3.691000e+03, 2214 iterations, 0.47 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3691.0000000 3691.00000 0.0% - 1s Explored 0 nodes (2214 simplex iterations) in 1.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.691000000000e+03, best bound 3.691000000000e+03, gap 0.0%