Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:57:02 2013 Optimize a model with 726 rows, 43626 columns and 87186 nonzeros Presolve time: 0.06s Presolved: 726 rows, 43626 columns, 87186 nonzeros Variable types: 43560 continuous, 66 integer (66 binary) Root relaxation: objective 8.356654e+04, 2072 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 83566.5391 0 8 - 83566.5391 - - 0s H 0 0 86395.000000 83566.5391 3.27% - 0s 0 0 84064.4685 0 6 86395.0000 84064.4685 2.70% - 0s 0 0 84093.1929 0 5 86395.0000 84093.1929 2.66% - 0s 0 0 84093.4940 0 5 86395.0000 84093.4940 2.66% - 0s 0 0 84096.0671 0 5 86395.0000 84096.0671 2.66% - 0s 0 0 84098.5518 0 4 86395.0000 84098.5518 2.66% - 0s H 0 0 86068.000000 84098.5518 2.29% - 0s 0 0 84098.5518 0 4 86068.0000 84098.5518 2.29% - 0s H 0 0 84280.000000 84098.5518 0.22% - 0s 0 0 84098.5518 0 8 84280.0000 84098.5518 0.22% - 1s 0 0 84098.5518 0 6 84280.0000 84098.5518 0.22% - 1s 0 0 84098.5518 0 5 84280.0000 84098.5518 0.22% - 1s 0 0 84098.5518 0 5 84280.0000 84098.5518 0.22% - 1s 0 0 84098.5518 0 4 84280.0000 84098.5518 0.22% - 1s 0 0 84098.5518 0 4 84280.0000 84098.5518 0.22% - 1s 0 0 84099.9010 0 4 84280.0000 84099.9010 0.21% - 1s 0 2 84102.3454 0 4 84280.0000 84102.3454 0.21% - 1s * 6 3 6 84158.000000 84138.1106 0.02% 35.5 1s Cutting planes: Implied bound: 83 Flow cover: 7 Explored 9 nodes (4643 simplex iterations) in 1.72 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.415800000000e+04, best bound 8.415800000000e+04, gap 0.0%