Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:49:32 2013 Optimize a model with 66501 rows, 65691 columns and 262521 nonzeros Presolve removed 1597 rows and 0 columns Presolve time: 0.42s Presolved: 64904 rows, 65691 columns, 259327 nonzeros Variable types: 65610 continuous, 81 integer (81 binary) Root relaxation: objective 1.037127e+05, 15704 iterations, 3.45 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 103712.652 0 4 - 103712.652 - - 4s H 0 0 105407.00000 103712.652 1.61% - 4s H 0 0 103863.00000 103712.652 0.14% - 4s 0 0 103716.487 0 5 103863.000 103716.487 0.14% - 4s 0 0 103717.475 0 5 103863.000 103717.475 0.14% - 5s 0 0 103717.684 0 5 103863.000 103717.684 0.14% - 5s 0 0 103717.967 0 3 103863.000 103717.967 0.14% - 6s H 0 0 103800.00000 103717.967 0.08% - 7s 0 0 103717.967 0 3 103800.000 103717.967 0.08% - 8s 0 0 103718.125 0 4 103800.000 103718.125 0.08% - 8s 0 0 103718.238 0 4 103800.000 103718.238 0.08% - 8s 0 0 103742.846 0 3 103800.000 103742.846 0.06% - 9s 0 0 103756.245 0 2 103800.000 103756.245 0.04% - 9s 0 2 103758.703 0 2 103800.000 103758.703 0.04% - 9s Cutting planes: Flow cover: 1 Explored 3 nodes (19695 simplex iterations) in 9.75 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.038000000000e+05, best bound 1.037993333333e+05, gap 0.0006%