Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:00:36 2013 Optimize a model with 221 rows, 435 columns and 28727 nonzeros Presolve removed 5 rows and 22 columns Presolve time: 0.09s Presolved: 216 rows, 413 columns, 27713 nonzeros Variable types: 0 continuous, 413 integer (413 binary) Found heuristic solution: objective 521.0000000 Found heuristic solution: objective 452.0000000 Root relaxation: cutoff, 121 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 cutoff 0 452.00000 451.00045 0.22% - 0s Explored 0 nodes (121 simplex iterations) in 0.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.520000000000e+02, best bound 4.520000000000e+02, gap 0.0%