Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:53:34 2013 Optimize a model with 319 rows, 8439 columns and 16849 nonzeros Presolve time: 0.01s Presolved: 319 rows, 8439 columns, 16849 nonzeros Variable types: 8410 continuous, 29 integer (29 binary) Root relaxation: objective 2.518961e+04, 255 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 25189.6146 0 4 - 25189.6146 - - 0s H 0 0 25323.000000 25189.6146 0.53% - 0s 0 0 25287.5299 0 2 25323.0000 25287.5299 0.14% - 0s 0 0 25304.3084 0 2 25323.0000 25304.3084 0.07% - 0s 0 0 25304.3084 0 4 25323.0000 25304.3084 0.07% - 0s 0 0 25304.3084 0 2 25323.0000 25304.3084 0.07% - 0s 0 0 25304.3084 0 2 25323.0000 25304.3084 0.07% - 0s 0 0 25308.6646 0 3 25323.0000 25308.6646 0.06% - 0s 0 0 25314.5469 0 4 25323.0000 25314.5469 0.03% - 0s 0 0 25319.0577 0 2 25323.0000 25319.0577 0.02% - 0s 0 0 25321.0455 0 2 25323.0000 25321.0455 0.01% - 0s Cutting planes: Implied bound: 36 Flow cover: 4 Explored 0 nodes (649 simplex iterations) in 0.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.532300000000e+04, best bound 2.532104545455e+04, gap 0.0077%