Gurobi 5.6.3 (linux64) logging started Tue Oct 7 21:31:54 2014 Optimize a model with 10921 rows, 10920 columns and 32552 nonzeros Presolve time: 0.18s Presolved: 10921 rows, 10920 columns, 32552 nonzeros Variable types: 0 continuous, 10920 integer (10920 binary) Found heuristic solution: objective 16.6433722 Root relaxation: objective 9.314859e+00, 1147 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 9.3148594 9.31486 0.00% - 0s Explored 0 nodes (1147 simplex iterations) in 0.28 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.314859408814e+00, best bound 9.314859408814e+00, gap 0.0%