Gurobi 5.6.3 (linux64) logging started Tue Oct 7 23:02:00 2014 Optimize a model with 17823 rows, 17822 columns and 53200 nonzeros Presolve time: 0.36s Presolved: 17823 rows, 17822 columns, 53200 nonzeros Variable types: 0 continuous, 17822 integer (17822 binary) Found heuristic solution: objective 14.7205381 Root relaxation: objective 1.129055e+01, 1662 iterations, 0.12 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 11.2905490 11.29055 0.00% - 0s Explored 0 nodes (1662 simplex iterations) in 0.53 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.129054901924e+01, best bound 1.129054901924e+01, gap 0.0%