Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:00:36 2013 Optimize a model with 2000 rows, 102100 columns and 206700 nonzeros Presolve removed 100 rows and 700 columns Presolve time: 0.36s Presolved: 1900 rows, 101400 columns, 205700 nonzeros Variable types: 101100 continuous, 300 integer (300 binary) Root relaxation: objective 9.053666e+05, 5941 iterations, 0.57 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 905366.638 0 2 - 905366.638 - - 1s H 0 0 969595.08113 905366.638 6.62% - 1s 0 0 905393.038 0 2 969595.081 905393.038 6.62% - 1s 0 0 905442.688 0 2 969595.081 905442.688 6.62% - 2s 0 0 905443.491 0 2 969595.081 905443.491 6.62% - 2s 0 0 905448.962 0 2 969595.081 905448.962 6.62% - 3s 0 0 905449.429 0 2 969595.081 905449.429 6.62% - 3s 0 0 905455.851 0 2 969595.081 905455.851 6.62% - 4s 0 0 905459.180 0 2 969595.081 905459.180 6.61% - 4s 0 0 905460.012 0 2 969595.081 905460.012 6.61% - 5s 0 0 905460.672 0 2 969595.081 905460.672 6.61% - 5s 0 0 905461.822 0 2 969595.081 905461.822 6.61% - 5s 0 0 905461.822 0 2 969595.081 905461.822 6.61% - 6s 0 2 905470.712 0 2 969595.081 905470.712 6.61% - 7s 5 7 906786.317 4 1 969595.081 906520.968 6.51% 309 10s * 20 10 19 907989.63518 906520.968 0.16% 124 13s 26 8 907081.388 6 2 907989.635 906864.352 0.12% 115 15s 50 8 907882.074 2 2 907989.635 907693.617 0.03% 123 20s Cutting planes: Flow cover: 17 Explored 60 nodes (14470 simplex iterations) in 21.31 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.079896351764e+05, best bound 9.079133234287e+05, gap 0.0084%