Gurobi 5.0.1 (linux64) logging started Fri Nov 16 04:11:13 2012 Optimize a model with 6271 rows, 2450 columns and 21019 nonzeros Presolve removed 934 rows and 51 columns Presolve time: 0.16s Presolved: 5337 rows, 2399 columns, 18547 nonzeros Variable types: 0 continuous, 2399 integer (2399 binary) Found heuristic solution: objective 49.0000000 Root relaxation: objective 4.000000e+00, 3956 iterations, 0.35 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 4.0000000 4.00000 0.0% - 0s Explored 0 nodes (8318 simplex iterations) in 0.84 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%