Gurobi 5.6.3 (linux64) logging started Tue Oct 7 21:51:36 2014 Optimize a model with 12433 rows, 12432 columns and 37074 nonzeros Presolve time: 0.22s Presolved: 12433 rows, 12432 columns, 37074 nonzeros Variable types: 0 continuous, 12432 integer (12432 binary) Found heuristic solution: objective 14.0518383 Root relaxation: objective 9.628008e+00, 1271 iterations, 0.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 9.6280080 9.62801 0.00% - 0s Explored 0 nodes (1271 simplex iterations) in 0.33 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.628007954943e+00, best bound 9.628007954943e+00, gap 0.0%