Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:32:29 2014 Optimize a model with 2863 rows, 2862 columns and 8480 nonzeros Presolve time: 0.05s Presolved: 2863 rows, 2862 columns, 8480 nonzeros Variable types: 0 continuous, 2862 integer (2862 binary) Found heuristic solution: objective 11.5412244 Root relaxation: objective 6.895565e+00, 647 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 6.8955653 6.89557 0.00% - 0s Explored 0 nodes (647 simplex iterations) in 0.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.895565312030e+00, best bound 6.895565312030e+00, gap 0.0%