Gurobi 5.6.3 (linux64) logging started Tue Oct 7 22:56:59 2014 Optimize a model with 17293 rows, 17292 columns and 51614 nonzeros Presolve time: 0.33s Presolved: 17293 rows, 17292 columns, 51614 nonzeros Variable types: 0 continuous, 17292 integer (17292 binary) Found heuristic solution: objective 16.1128796 Root relaxation: objective 1.086551e+01, 1532 iterations, 0.12 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 10.8655129 10.86551 0.00% - 0s Explored 0 nodes (1532 simplex iterations) in 0.48 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.086551288895e+01, best bound 1.086551288895e+01, gap 0.0%