Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:05:05 2013 Optimize a model with 577 rows, 5818 columns and 229860 nonzeros Presolve removed 39 rows and 106 columns Presolve time: 1.24s Presolved: 538 rows, 5712 columns, 227033 nonzeros Variable types: 0 continuous, 5712 integer (5712 binary) Found heuristic solution: objective 3436.0000000 Root relaxation: objective 2.336000e+03, 974 iterations, 0.10 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 2336.0000000 2336.00000 0.0% - 1s Explored 0 nodes (974 simplex iterations) in 1.38 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.336000000000e+03, best bound 2.336000000000e+03, gap 0.0%