Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:02:48 2013 Optimize a model with 432 rows, 846 columns and 2890 nonzeros Presolve removed 80 rows and 140 columns Presolve time: 0.03s Presolved: 352 rows, 706 columns, 2097 nonzeros Variable types: 364 continuous, 342 integer (342 binary) Root relaxation: objective 3.883634e+03, 12 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3883.63402 0 2 - 3883.63402 - - 0s 0 0 3884.91798 0 3 - 3884.91798 - - 0s 0 0 3890.11845 0 3 - 3890.11845 - - 0s 0 0 3890.27665 0 2 - 3890.27665 - - 0s 0 0 3890.43895 0 2 - 3890.43895 - - 0s 0 0 3890.53036 0 2 - 3890.53036 - - 0s 0 0 3890.57514 0 2 - 3890.57514 - - 0s 0 0 3890.61931 0 2 - 3890.61931 - - 0s H 0 0 3902.4646099 3890.61931 0.30% - 0s 0 2 3890.61931 0 2 3902.46461 3890.61931 0.30% - 0s * 45 3 40 3893.8998644 3893.89986 0.0% 3.6 0s Cutting planes: Gomory: 1 Cover: 3 Flow cover: 2 Explored 46 nodes (219 simplex iterations) in 0.18 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.893899864364e+03, best bound 3.893899864364e+03, gap 0.0%