Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:08:12 2013 Optimize a model with 748 rows, 46308 columns and 92548 nonzeros Presolve time: 0.07s Presolved: 748 rows, 46308 columns, 92548 nonzeros Variable types: 46240 continuous, 68 integer (68 binary) Root relaxation: objective 7.916761e+04, 1872 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 79167.6097 0 6 - 79167.6097 - - 0s H 0 0 81329.000000 79167.6097 2.66% - 0s H 0 0 80478.000000 79167.6097 1.63% - 0s 0 0 79726.6884 0 5 80478.0000 79726.6884 0.93% - 0s 0 0 79815.4939 0 4 80478.0000 79815.4939 0.82% - 0s 0 0 79833.1408 0 5 80478.0000 79833.1408 0.80% - 0s 0 0 79835.1887 0 4 80478.0000 79835.1887 0.80% - 0s 0 0 79836.0737 0 4 80478.0000 79836.0737 0.80% - 0s 0 0 79836.6172 0 4 80478.0000 79836.6172 0.80% - 0s 0 0 79836.6172 0 6 80478.0000 79836.6172 0.80% - 1s 0 0 79836.6172 0 5 80478.0000 79836.6172 0.80% - 1s 0 0 79836.6172 0 4 80478.0000 79836.6172 0.80% - 1s 0 0 79836.6172 0 5 80478.0000 79836.6172 0.80% - 1s 0 0 79836.6172 0 4 80478.0000 79836.6172 0.80% - 1s 0 0 79836.6172 0 4 80478.0000 79836.6172 0.80% - 1s 0 0 79836.6172 0 4 80478.0000 79836.6172 0.80% - 1s 0 2 79869.0869 0 4 80478.0000 79869.0869 0.76% - 1s * 9 7 7 80055.000000 80017.2650 0.05% 38.7 2s Cutting planes: Implied bound: 92 Flow cover: 3 Explored 14 nodes (4763 simplex iterations) in 2.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.005500000000e+04, best bound 8.005307292437e+04, gap 0.0024%