Gurobi 5.0.1 (linux64) logging started Wed Dec 19 14:01:19 2012 Optimize a model with 902 rows, 840 columns and 3620 nonzeros Presolve removed 156 rows and 40 columns Presolve time: 0.02s Presolved: 746 rows, 800 columns, 3365 nonzeros Variable types: 380 continuous, 420 integer (420 binary) Root relaxation: objective 2.004201e+02, 810 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 200.42010 0 43 - 200.42010 - - 0s 0 0 241.05102 0 47 - 241.05102 - - 0s 0 0 288.18002 0 40 - 288.18002 - - 0s 0 0 290.38559 0 45 - 290.38559 - - 0s 0 0 293.32994 0 48 - 293.32994 - - 0s 0 0 293.87966 0 49 - 293.87966 - - 0s 0 0 294.38716 0 43 - 294.38716 - - 0s 0 0 295.30383 0 35 - 295.30383 - - 0s 0 0 295.81182 0 42 - 295.81182 - - 0s H 0 0 352.0000000 295.81182 16.0% - 0s 0 0 295.81182 0 41 352.00000 295.81182 16.0% - 0s 0 0 295.81182 0 42 352.00000 295.81182 16.0% - 0s 0 0 295.81182 0 47 352.00000 295.81182 16.0% - 0s 0 0 295.81182 0 41 352.00000 295.81182 16.0% - 0s 0 0 295.81182 0 34 352.00000 295.81182 16.0% - 0s 0 0 295.81932 0 41 352.00000 295.81932 16.0% - 0s 0 0 295.86538 0 42 352.00000 295.86538 15.9% - 0s 0 2 295.90640 0 42 352.00000 295.90640 15.9% - 0s Cutting planes: Gomory: 1 Cover: 9 Implied bound: 3 Flow cover: 28 GUB cover: 8 Explored 104 nodes (5922 simplex iterations) in 0.75 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.520000000000e+02, best bound 3.520000000000e+02, gap 0.0%