Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:00:00 2013 Optimize a model with 17302 rows, 16892 columns and 67322 nonzeros Presolve removed 41 rows and 0 columns Presolve time: 0.07s Presolved: 17261 rows, 16892 columns, 67281 nonzeros Variable types: 16851 continuous, 41 integer (41 binary) Root relaxation: objective 3.713560e+04, 2452 iterations, 0.66 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 37135.6017 0 38 - 37135.6017 - - 0s H 0 0 45894.000000 37135.6017 19.1% - 1s 0 0 42728.9107 0 2 45894.0000 42728.9107 6.90% - 1s H 0 0 44549.714286 42728.9107 4.09% - 1s H 0 0 43811.000000 42728.9107 2.47% - 1s 0 2 42728.9228 0 2 43811.0000 42728.9228 2.47% - 2s H 1 1 43455.846154 42728.9228 1.67% 0.0 2s H 2 2 43074.500000 42738.0000 0.78% 9.0 2s * 6 2 6 42766.000000 42755.0000 0.03% 48.2 2s * 8 0 2 42755.000000 42755.0000 0.0% 46.9 2s Cutting planes: Implied bound: 33 Explored 9 nodes (4023 simplex iterations) in 2.32 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.275500000000e+04, best bound 4.275500000000e+04, gap 0.0%