Gurobi 5.0.1 (linux64) logging started Fri Nov 16 04:22:40 2012 Optimize a model with 6069 rows, 2652 columns and 20655 nonzeros Presolve removed 1327 rows and 51 columns Presolve time: 0.13s Presolved: 4742 rows, 2601 columns, 17493 nonzeros Variable types: 0 continuous, 2601 integer (2601 binary) Found heuristic solution: objective 32.0000000 Root relaxation: objective 4.000000e+00, 3740 iterations, 0.28 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 (4485 simplex iterations) in 0.48 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%