Gurobi 5.6.3 (linux64) logging started Tue Oct 7 22:46:23 2014 Optimize a model with 16513 rows, 16512 columns and 49280 nonzeros Presolve time: 0.37s Presolved: 16513 rows, 16512 columns, 49280 nonzeros Variable types: 0 continuous, 16512 integer (16512 binary) Found heuristic solution: objective 20.2706730 Root relaxation: objective 1.196233e+01, 1741 iterations, 0.13 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 11.9623262 11.96233 0.00% - 0s Explored 0 nodes (1741 simplex iterations) in 0.54 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.196232615491e+01, best bound 1.196232615491e+01, gap 0.0%