Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:46:20 2013 Optimize a model with 232 rows, 446 columns and 1490 nonzeros Presolve removed 153 rows and 286 columns Presolve time: 0.01s Presolved: 79 rows, 160 columns, 460 nonzeros Variable types: 91 continuous, 69 integer (69 binary) Root relaxation: objective 4.827478e+03, 9 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 4827.47845 0 2 - 4827.47845 - - 0s 0 0 4827.79657 0 2 - 4827.79657 - - 0s 0 0 4827.91607 0 2 - 4827.91607 - - 0s 0 0 4828.03294 0 2 - 4828.03294 - - 0s 0 0 4828.14730 0 2 - 4828.14730 - - 0s 0 0 4828.25925 0 2 - 4828.25925 - - 0s 0 0 4828.36890 0 2 - 4828.36890 - - 0s 0 0 4828.47632 0 2 - 4828.47632 - - 0s 0 0 4828.58162 0 2 - 4828.58162 - - 0s 0 0 4828.68486 0 2 - 4828.68486 - - 0s 0 0 4828.76011 0 4 - 4828.76011 - - 0s 0 0 4828.82697 0 4 - 4828.82697 - - 0s 0 0 4828.89200 0 4 - 4828.89200 - - 0s 0 0 4828.95585 0 4 - 4828.95585 - - 0s 0 0 4829.01856 0 4 - 4829.01856 - - 0s 0 0 4829.08017 0 4 - 4829.08017 - - 0s 0 0 4829.14072 0 4 - 4829.14072 - - 0s 0 0 4829.20024 0 4 - 4829.20024 - - 0s 0 0 4829.25877 0 4 - 4829.25877 - - 0s 0 0 4829.31634 0 4 - 4829.31634 - - 0s 0 0 4829.37298 0 4 - 4829.37298 - - 0s 0 0 4829.42871 0 4 - 4829.42871 - - 0s 0 0 4829.48357 0 4 - 4829.48357 - - 0s 0 0 4830.96676 0 2 - 4830.96676 - - 0s 0 0 4831.00236 0 2 - 4831.00236 - - 0s H 0 0 4831.8812825 4831.00236 0.02% - 0s 0 1 4831.03266 0 2 4831.88128 4831.03266 0.02% - 0s * 5 3 5 4831.1180431 4831.11804 0.0% 2.6 0s Cutting planes: Gomory: 2 Flow cover: 1 Explored 6 nodes (105 simplex iterations) in 0.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.831118043089e+03, best bound 4.831118043089e+03, gap 0.0%