Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:21:20 2013 Optimize a model with 1561 rows, 441 columns and 4851 nonzeros Presolve removed 391 rows and 233 columns Presolve time: 0.01s Presolved: 1170 rows, 208 columns, 3652 nonzeros Variable types: 8 continuous, 200 integer (200 binary) Found heuristic solution: objective 10357.000000 Root relaxation: objective 8.620946e+03, 713 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 8620.94587 0 3 10357.0000 8620.94587 16.8% - 0s H 0 0 8625.0000000 8620.94587 0.05% - 0s 0 0 cutoff 0 8625.00000 8624.00863 0.01% - 0s Cutting planes: Implied bound: 1 MIR: 2 Explored 0 nodes (724 simplex iterations) in 0.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.625000000000e+03, best bound 8.625000000000e+03, gap 0.0%