Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:08:03 2013 Optimize a model with 68 rows, 4160 columns and 52122 nonzeros Presolve removed 22 rows and 119 columns Presolve time: 0.34s Presolved: 46 rows, 4041 columns, 48080 nonzeros Variable types: 4021 continuous, 20 integer (20 binary) Root relaxation: objective 5.737611e+03, 22 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 5737.61109 0 8 - 5737.61109 - - 0s 0 0 5738.60131 0 8 - 5738.60131 - - 0s 0 0 5748.68305 0 7 - 5748.68305 - - 0s 0 0 5748.68305 0 7 - 5748.68305 - - 0s H 0 0 5754.7101032 5748.68305 0.10% - 0s H 0 0 5754.0024064 5748.68305 0.09% - 0s 0 0 5753.91277 0 4 5754.00241 5753.91277 0.00% - 0s Explored 0 nodes (105 simplex iterations) in 0.63 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.754002406443e+03, best bound 5.753912773026e+03, gap 0.0016%