Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:08:44 2013 Optimize a model with 2000 rows, 101100 columns and 203800 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.49s Presolved: 1900 rows, 101000 columns, 203200 nonzeros Variable types: 100700 continuous, 300 integer (300 binary) Root relaxation: objective 7.672886e+05, 5508 iterations, 0.63 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 767288.564 0 6 - 767288.564 - - 1s H 0 0 926712.22000 767288.564 17.2% - 1s H 0 0 775398.43744 767288.564 1.05% - 2s 0 0 767326.495 0 4 775398.437 767326.495 1.04% - 2s 0 0 767326.495 0 4 775398.437 767326.495 1.04% - 2s 0 0 767326.495 0 4 775398.437 767326.495 1.04% - 3s 0 0 767326.495 0 4 775398.437 767326.495 1.04% - 3s 0 0 767326.495 0 4 775398.437 767326.495 1.04% - 4s 0 0 767326.495 0 4 775398.437 767326.495 1.04% - 4s 0 2 767335.589 0 4 775398.437 767335.589 1.04% - 5s * 18 3 17 768324.01239 767800.496 0.07% 64.5 9s 20 2 767857.706 1 2 768324.012 767857.706 0.06% 71.3 10s Cutting planes: Flow cover: 6 Explored 32 nodes (8369 simplex iterations) in 11.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.683240123860e+05, best bound 7.683240123860e+05, gap 0.0000%