Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:09:24 2012 Optimize a model with 3408 rows, 600 columns and 10728 nonzeros Presolve removed 747 rows and 0 columns Presolve time: 0.05s Presolved: 2661 rows, 600 columns, 16206 nonzeros Variable types: 0 continuous, 600 integer (600 binary) Found heuristic solution: objective 18.0000000 Root relaxation: objective 7.000000e+00, 2179 iterations, 0.24 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 7.0000000 7.00000 0.0% - 0s Explored 0 nodes (2539 simplex iterations) in 0.33 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%