Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:07:31 2013 Optimize a model with 528 rows, 23088 columns and 46128 nonzeros Presolve time: 0.03s Presolved: 528 rows, 23088 columns, 46128 nonzeros Variable types: 23040 continuous, 48 integer (48 binary) Root relaxation: objective 4.689169e+04, 735 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 46891.6931 0 11 - 46891.6931 - - 0s H 0 0 48438.000000 46891.6931 3.19% - 0s H 0 0 47575.000000 46891.6931 1.44% - 0s 0 0 47176.5956 0 7 47575.0000 47176.5956 0.84% - 0s 0 0 47206.1444 0 6 47575.0000 47206.1444 0.78% - 0s 0 0 47214.2876 0 6 47575.0000 47214.2876 0.76% - 0s 0 0 47217.3906 0 5 47575.0000 47217.3906 0.75% - 0s 0 0 47224.4295 0 6 47575.0000 47224.4295 0.74% - 0s 0 0 47224.8751 0 6 47575.0000 47224.8751 0.74% - 0s 0 0 47225.0970 0 5 47575.0000 47225.0970 0.74% - 0s 0 0 47225.0970 0 5 47575.0000 47225.0970 0.74% - 0s 0 0 47359.9047 0 6 47575.0000 47359.9047 0.45% - 0s 0 0 47362.2665 0 5 47575.0000 47362.2665 0.45% - 0s 0 0 47362.2665 0 9 47575.0000 47362.2665 0.45% - 0s 0 0 47388.9987 0 5 47575.0000 47388.9987 0.39% - 0s 0 0 47401.5660 0 4 47575.0000 47401.5660 0.36% - 0s 0 0 47406.4211 0 4 47575.0000 47406.4211 0.35% - 0s 0 0 47409.2622 0 3 47575.0000 47409.2622 0.35% - 0s 0 0 47410.2163 0 3 47575.0000 47410.2163 0.35% - 0s 0 2 47413.9895 0 3 47575.0000 47413.9895 0.34% - 0s * 7 3 6 47493.000000 47442.6057 0.11% 24.1 0s Cutting planes: Implied bound: 83 Flow cover: 9 Explored 13 nodes (2338 simplex iterations) in 0.99 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.749300000000e+04, best bound 4.748900000000e+04, gap 0.0084%