Gurobi 5.6.3 (linux64) logging started Tue Oct 7 22:35:22 2014 Optimize a model with 15751 rows, 15750 columns and 47000 nonzeros Presolve time: 0.29s Presolved: 15751 rows, 15750 columns, 47000 nonzeros Variable types: 0 continuous, 15750 integer (15750 binary) Found heuristic solution: objective 16.1909968 Root relaxation: objective 1.111558e+01, 1535 iterations, 0.10 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 11.1155802 11.11558 0.00% - 0s Explored 0 nodes (1535 simplex iterations) in 0.44 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.111558024277e+01, best bound 1.111558024277e+01, gap 0.0%