Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:52:48 2013 Optimize a model with 286 rows, 6786 columns and 13546 nonzeros Presolve time: 0.01s Presolved: 286 rows, 6786 columns, 13546 nonzeros Variable types: 6760 continuous, 26 integer (26 binary) Root relaxation: objective 3.221149e+04, 466 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 32211.4922 0 3 - 32211.4922 - - 0s H 0 0 32457.000000 32211.4922 0.76% - 0s H 0 0 32445.000000 32211.4922 0.72% - 0s 0 0 32436.5994 0 2 32445.0000 32436.5994 0.03% - 0s 0 0 32438.3373 0 3 32445.0000 32438.3373 0.02% - 0s 0 0 32438.4566 0 2 32445.0000 32438.4566 0.02% - 0s 0 0 32440.3757 0 3 32445.0000 32440.3757 0.01% - 0s 0 0 32440.3994 0 2 32445.0000 32440.3994 0.01% - 0s 0 0 32440.4848 0 1 32445.0000 32440.4848 0.01% - 0s 0 0 32444.8571 0 1 32445.0000 32444.8571 0.00% - 0s Cutting planes: Implied bound: 41 Flow cover: 3 Explored 0 nodes (543 simplex iterations) in 0.09 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.244500000000e+04, best bound 3.244485714286e+04, gap 0.0004%