Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:58:53 2014 Optimize a model with 7483 rows, 7482 columns and 22274 nonzeros Presolve time: 0.16s Presolved: 7483 rows, 7482 columns, 22274 nonzeros Variable types: 0 continuous, 7482 integer (7482 binary) Found heuristic solution: objective 19.1098693 Root relaxation: objective 9.033444e+00, 923 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 9.0334437 9.03344 0.00% - 0s Explored 0 nodes (923 simplex iterations) in 0.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.033443709760e+00, best bound 9.033443709760e+00, gap 0.0%