Gurobi 5.6.3 (linux64) logging started Tue Oct 7 22:50:50 2014 Optimize a model with 16771 rows, 16770 columns and 50052 nonzeros Presolve time: 0.32s Presolved: 16771 rows, 16770 columns, 50052 nonzeros Variable types: 0 continuous, 16770 integer (16770 binary) Found heuristic solution: objective 17.3430977 Root relaxation: objective 1.165425e+01, 1548 iterations, 0.10 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 11.6542477 11.65425 0.00% - 0s Explored 0 nodes (1548 simplex iterations) in 0.47 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.165424766227e+01, best bound 1.165424766227e+01, gap 0.0%