Gurobi 5.0.1 (linux64) logging started Wed Dec 19 14:01:16 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, 3366 nonzeros Variable types: 380 continuous, 420 integer (420 binary) Root relaxation: objective 2.074226e+02, 822 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 207.42259 0 43 - 207.42259 - - 0s 0 0 264.91590 0 47 - 264.91590 - - 0s 0 0 282.26091 0 43 - 282.26091 - - 0s 0 0 290.15246 0 48 - 290.15246 - - 0s H 0 0 336.0000000 290.15246 13.6% - 0s 0 0 295.84037 0 43 336.00000 295.84037 12.0% - 0s 0 0 297.39025 0 47 336.00000 297.39025 11.5% - 0s 0 0 297.82271 0 44 336.00000 297.82271 11.4% - 0s 0 0 297.90212 0 41 336.00000 297.90212 11.3% - 0s 0 0 297.93897 0 37 336.00000 297.93897 11.3% - 0s 0 0 297.93897 0 47 336.00000 297.93897 11.3% - 0s 0 0 297.93897 0 36 336.00000 297.93897 11.3% - 0s 0 0 297.93897 0 39 336.00000 297.93897 11.3% - 0s 0 0 297.93897 0 41 336.00000 297.93897 11.3% - 0s 0 0 297.93897 0 42 336.00000 297.93897 11.3% - 0s 0 0 297.93897 0 45 336.00000 297.93897 11.3% - 0s 0 0 297.93897 0 36 336.00000 297.93897 11.3% - 0s 0 2 298.52829 0 36 336.00000 298.52829 11.2% - 0s H 28 12 335.0000000 303.89413 9.29% 27.2 0s Cutting planes: Gomory: 8 Cover: 16 Implied bound: 21 Flow cover: 31 GUB cover: 4 Explored 832 nodes (19855 simplex iterations) in 1.30 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.350000000000e+02, best bound 3.350000000000e+02, gap 0.0%