Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:07:20 2012 Optimize a model with 2204 rows, 462 columns and 6970 nonzeros Presolve removed 1325 rows and 2 columns Presolve time: 0.06s Presolved: 879 rows, 460 columns, 4765 nonzeros Variable types: 0 continuous, 460 integer (460 binary) Found heuristic solution: objective 21.0000000 Root relaxation: objective 6.000000e+00, 1695 iterations, 0.09 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 6.0000000 6.00000 0.0% - 0s Explored 0 nodes (2589 simplex iterations) in 0.19 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%