Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:25:10 2013 Optimize a model with 781 rows, 50481 columns and 100891 nonzeros Presolve time: 0.07s Presolved: 781 rows, 50481 columns, 100891 nonzeros Variable types: 50410 continuous, 71 integer (71 binary) Root relaxation: objective 6.920932e+04, 1591 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 69209.3180 0 6 - 69209.3180 - - 0s H 0 0 71700.000000 69209.3180 3.47% - 0s 0 0 69404.0681 0 4 71700.0000 69404.0681 3.20% - 0s 0 0 69416.8276 0 3 71700.0000 69416.8276 3.18% - 0s H 0 0 70502.000000 69416.8276 1.54% - 0s 0 0 69441.8681 0 3 70502.0000 69441.8681 1.50% - 0s 0 0 69444.0331 0 5 70502.0000 69444.0331 1.50% - 0s H 0 0 70458.000000 69444.0331 1.44% - 0s 0 0 69444.8110 0 3 70458.0000 69444.8110 1.44% - 0s H 0 0 70405.000000 69444.8110 1.36% - 0s 0 0 69444.8110 0 3 70405.0000 69444.8110 1.36% - 0s 0 0 69444.8110 0 6 70405.0000 69444.8110 1.36% - 1s 0 0 69444.8110 0 4 70405.0000 69444.8110 1.36% - 1s 0 0 69444.8110 0 3 70405.0000 69444.8110 1.36% - 1s 0 0 69444.8110 0 3 70405.0000 69444.8110 1.36% - 1s 0 0 69444.8110 0 5 70405.0000 69444.8110 1.36% - 1s 0 0 69444.8110 0 4 70405.0000 69444.8110 1.36% - 1s 0 0 69444.8110 0 3 70405.0000 69444.8110 1.36% - 1s 0 0 69444.8110 0 3 70405.0000 69444.8110 1.36% - 1s 0 2 69448.5223 0 3 70405.0000 69448.5223 1.36% - 1s H 4 4 69757.000000 69511.4080 0.35% 65.2 2s H 10 5 69740.000000 69511.4080 0.33% 38.3 2s * 11 5 11 69728.000000 69511.4080 0.31% 35.9 2s * 22 0 6 69694.000000 69694.0000 0.0% 35.3 2s Cutting planes: Implied bound: 101 Flow cover: 5 Explored 23 nodes (4293 simplex iterations) in 2.25 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.969400000000e+04, best bound 6.969400000000e+04, gap 0.0%