Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:41:30 2013 Optimize a model with 935 rows, 72335 columns and 144585 nonzeros Presolve time: 0.11s Presolved: 935 rows, 72335 columns, 144585 nonzeros Variable types: 72250 continuous, 85 integer (85 binary) Root relaxation: objective 9.936358e+04, 2507 iterations, 0.09 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 99363.5842 0 6 - 99363.5842 - - 0s H 0 0 103699.00000 99363.5842 4.18% - 0s H 0 0 99695.000000 99363.5842 0.33% - 0s 0 0 99462.1678 0 2 99695.0000 99462.1678 0.23% - 0s 0 0 99462.1678 0 6 99695.0000 99462.1678 0.23% - 0s 0 0 99462.1678 0 2 99695.0000 99462.1678 0.23% - 0s 0 0 99464.8732 0 1 99695.0000 99464.8732 0.23% - 1s 0 0 99466.4085 0 1 99695.0000 99466.4085 0.23% - 1s 0 0 99466.9859 0 1 99695.0000 99466.9859 0.23% - 1s 0 0 99466.9859 0 1 99695.0000 99466.9859 0.23% - 1s 0 2 99467.6720 0 1 99695.0000 99467.6720 0.23% - 1s * 8 3 6 99624.000000 99594.6667 0.03% 53.6 1s Cutting planes: Implied bound: 28 Flow cover: 3 Explored 10 nodes (5100 simplex iterations) in 1.71 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.962400000000e+04, best bound 9.961539130435e+04, gap 0.0086%