Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:32:51 2014 Optimize a model with 2971 rows, 2970 columns and 8802 nonzeros Presolve time: 0.06s Presolved: 2971 rows, 2970 columns, 8802 nonzeros Variable types: 0 continuous, 2970 integer (2970 binary) Found heuristic solution: objective 13.0286354 Root relaxation: objective 6.885294e+00, 723 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 6.8852942 6.88529 0.00% - 0s Explored 0 nodes (723 simplex iterations) in 0.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.885294201979e+00, best bound 6.885294201979e+00, gap 0.0%