Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:11:32 2013 Optimize a model with 604 rows, 7152 columns and 263437 nonzeros Presolve removed 44 rows and 108 columns Presolve time: 0.58s Presolved: 560 rows, 7044 columns, 259162 nonzeros Variable types: 0 continuous, 7044 integer (7044 binary) Found heuristic solution: objective 4076.0000000 Root relaxation: objective 2.856000e+03, 1046 iterations, 0.12 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 2856.0000000 2856.00000 0.0% - 0s Explored 0 nodes (1046 simplex iterations) in 0.74 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.856000000000e+03, best bound 2.856000000000e+03, gap 0.0%