Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:02:12 2013 Optimize a model with 836 rows, 57836 columns and 115596 nonzeros Presolve time: 0.08s Presolved: 836 rows, 57836 columns, 115596 nonzeros Variable types: 57760 continuous, 76 integer (76 binary) Root relaxation: objective 8.318309e+04, 2363 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 83183.0918 0 5 - 83183.0918 - - 0s H 0 0 85750.000000 83183.0918 2.99% - 0s H 0 0 83944.000000 83183.0918 0.91% - 0s 0 0 83284.4666 0 4 83944.0000 83284.4666 0.79% - 0s 0 0 83299.5388 0 4 83944.0000 83299.5388 0.77% - 0s 0 0 83301.5615 0 4 83944.0000 83301.5615 0.77% - 0s 0 0 83304.1324 0 4 83944.0000 83304.1324 0.76% - 0s 0 0 83304.1455 0 3 83944.0000 83304.1455 0.76% - 0s 0 0 83304.1455 0 3 83944.0000 83304.1455 0.76% - 0s 0 0 83304.2423 0 3 83944.0000 83304.2423 0.76% - 0s 0 0 83305.5366 0 3 83944.0000 83305.5366 0.76% - 1s 0 0 83305.5435 0 3 83944.0000 83305.5435 0.76% - 1s 0 0 83305.5435 0 3 83944.0000 83305.5435 0.76% - 1s 0 0 83305.5435 0 3 83944.0000 83305.5435 0.76% - 1s 0 0 83305.5435 0 5 83944.0000 83305.5435 0.76% - 1s 0 0 83305.5435 0 4 83944.0000 83305.5435 0.76% - 1s 0 0 83305.5435 0 3 83944.0000 83305.5435 0.76% - 1s 0 0 83305.5435 0 3 83944.0000 83305.5435 0.76% - 1s 0 0 83305.5435 0 3 83944.0000 83305.5435 0.76% - 2s 0 0 83305.5435 0 4 83944.0000 83305.5435 0.76% - 2s 0 0 83305.5435 0 3 83944.0000 83305.5435 0.76% - 2s 0 0 83305.5435 0 3 83944.0000 83305.5435 0.76% - 2s 0 0 83305.5435 0 3 83944.0000 83305.5435 0.76% - 2s 0 0 83305.5435 0 3 83944.0000 83305.5435 0.76% - 2s 0 0 83305.5435 0 3 83944.0000 83305.5435 0.76% - 2s 0 0 83305.5435 0 3 83944.0000 83305.5435 0.76% - 2s 0 0 83305.5435 0 3 83944.0000 83305.5435 0.76% - 2s 0 0 83305.5435 0 3 83944.0000 83305.5435 0.76% - 2s 0 2 83306.4488 0 3 83944.0000 83306.4488 0.76% - 2s H 9 7 83937.000000 83387.5044 0.65% 74.3 3s H 11 9 83764.000000 83387.5044 0.45% 67.9 3s H 12 9 83740.000000 83387.5044 0.42% 66.8 3s H 14 9 83591.000000 83387.5044 0.24% 58.9 3s * 15 7 13 83531.000000 83387.5044 0.17% 57.4 3s Cutting planes: Implied bound: 73 Flow cover: 8 Explored 28 nodes (6212 simplex iterations) in 3.45 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.353100000000e+04, best bound 8.353100000000e+04, gap 0.0%