Gurobi 5.6.3 (linux64) logging started Tue Oct 7 21:53:28 2014 Optimize a model with 12657 rows, 12656 columns and 37744 nonzeros Presolve time: 0.22s Presolved: 12657 rows, 12656 columns, 37744 nonzeros Variable types: 0 continuous, 12656 integer (12656 binary) Found heuristic solution: objective 17.0330560 Root relaxation: objective 1.042228e+01, 1300 iterations, 0.09 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 10.4222779 10.42228 0.00% - 0s Explored 0 nodes (1300 simplex iterations) in 0.33 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.042227793456e+01, best bound 1.042227793456e+01, gap 0.0%