Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:19:53 2013 Optimize a model with 1100 rows, 25850 columns and 53800 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.16s Presolved: 1050 rows, 25800 columns, 53250 nonzeros Variable types: 25600 continuous, 200 integer (200 binary) Root relaxation: objective 1.715514e+05, 2742 iterations, 0.12 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 171551.420 0 6 - 171551.420 - - 0s H 0 0 196851.25107 171551.420 12.9% - 0s H 0 0 171605.18442 171551.420 0.03% - 0s 0 0 171553.825 0 3 171605.184 171553.825 0.03% - 0s 0 0 171564.828 0 3 171605.184 171564.828 0.02% - 0s 0 0 171569.326 0 3 171605.184 171569.326 0.02% - 0s 0 0 171569.505 0 3 171605.184 171569.505 0.02% - 0s 0 0 171575.343 0 3 171605.184 171575.343 0.02% - 0s 0 0 171578.618 0 3 171605.184 171578.618 0.02% - 0s 0 0 171579.745 0 3 171605.184 171579.745 0.01% - 0s 0 0 171583.121 0 3 171605.184 171583.121 0.01% - 0s * 0 0 0 171584.76124 171584.761 0.0% - 0s Cutting planes: Flow cover: 1 Explored 0 nodes (4160 simplex iterations) in 0.85 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.715847612416e+05, best bound 1.715847612416e+05, gap 0.0%