Gurobi 5.0.1 (linux64) logging started Sun Dec 9 10:43:39 2012 Optimize a model with 3000 rows, 2970 columns and 11334 nonzeros Presolve removed 481 rows and 65 columns Presolve time: 0.02s Presolved: 2519 rows, 2905 columns, 10292 nonzeros Variable types: 2741 continuous, 164 integer (164 binary) Root relaxation: objective 6.345454e+04, 312 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 63454.5356 0 21 - 63454.5356 - - 0s H 0 0 66978.000000 63454.5356 5.26% - 0s 0 0 63597.2871 0 26 66978.0000 63597.2871 5.05% - 0s 0 0 63614.4205 0 37 66978.0000 63614.4205 5.02% - 0s 0 0 63618.9919 0 29 66978.0000 63618.9919 5.02% - 0s 0 0 63619.2425 0 33 66978.0000 63619.2425 5.01% - 0s 0 0 63621.5495 0 32 66978.0000 63621.5495 5.01% - 0s 0 2 63632.0289 0 32 66978.0000 63632.0289 5.00% - 0s H 54 46 65469.000000 63796.0062 2.56% 8.5 0s H 270 192 65310.000000 63893.1849 2.17% 7.7 0s * 292 204 38 65276.000000 63893.1849 2.12% 7.6 0s H 380 235 65197.000000 63900.2509 1.99% 7.9 0s H 399 233 65129.000000 63900.2509 1.89% 7.7 0s * 402 226 36 65091.000000 63900.2509 1.83% 7.7 0s * 483 141 33 64555.000000 63978.6844 0.89% 7.5 0s Cutting planes: Gomory: 3 Flow cover: 16 Explored 1706 nodes (12699 simplex iterations) in 1.95 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.455500000000e+04, best bound 6.455148044426e+04, gap 0.0055%