Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:53:33 2013 Optimize a model with 1300 rows, 27950 columns and 71100 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.10s Presolved: 1250 rows, 27900 columns, 68550 nonzeros Variable types: 27600 continuous, 300 integer (300 binary) Root relaxation: objective 1.715514e+05, 2087 iterations, 0.07 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 0 0 171553.825 0 3 - 171553.825 - - 0s H 0 0 171667.93595 171553.825 0.07% - 0s H 0 0 171605.61113 171553.825 0.03% - 0s 0 0 171564.828 0 3 171605.611 171564.828 0.02% - 0s 0 0 171569.326 0 3 171605.611 171569.326 0.02% - 0s 0 0 171569.505 0 3 171605.611 171569.505 0.02% - 0s 0 0 171575.343 0 3 171605.611 171575.343 0.02% - 0s 0 0 171578.618 0 3 171605.611 171578.618 0.02% - 0s 0 0 171579.745 0 3 171605.611 171579.745 0.02% - 0s 0 0 171583.121 0 3 171605.611 171583.121 0.01% - 0s * 0 0 0 171584.76124 171584.761 0.0% - 0s Cutting planes: Flow cover: 1 Explored 0 nodes (3654 simplex iterations) in 0.65 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%