Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:27:21 2014 Optimize a model with 871 rows, 870 columns and 2552 nonzeros Presolve time: 0.01s Presolved: 871 rows, 870 columns, 2552 nonzeros Variable types: 0 continuous, 870 integer (870 binary) Found heuristic solution: objective 7.7939218 Root relaxation: objective 6.003620e+00, 348 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 6.0036198 6.00362 0.00% - 0s Explored 0 nodes (348 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.003619760853e+00, best bound 6.003619760853e+00, gap 0.0%