Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:07:46 2013 Optimize a model with 748 rows, 46308 columns and 92548 nonzeros Presolve time: 0.07s Presolved: 748 rows, 46308 columns, 92548 nonzeros Variable types: 46240 continuous, 68 integer (68 binary) Root relaxation: objective 6.855176e+04, 1550 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 68551.7647 0 8 - 68551.7647 - - 0s H 0 0 71684.000000 68551.7647 4.37% - 0s 0 0 69067.7596 0 7 71684.0000 69067.7596 3.65% - 0s 0 0 69175.8918 0 6 71684.0000 69175.8918 3.50% - 0s H 0 0 71362.000000 69175.8918 3.06% - 0s 0 0 69176.0668 0 6 71362.0000 69176.0668 3.06% - 0s H 0 0 71348.000000 69176.0668 3.04% - 0s 0 0 69176.0668 0 6 71348.0000 69176.0668 3.04% - 0s H 0 0 71037.000000 69176.0668 2.62% - 0s 0 0 69176.4974 0 7 71037.0000 69176.4974 2.62% - 0s H 0 0 71027.000000 69176.4974 2.61% - 0s H 0 0 69523.000000 69176.4974 0.50% - 0s 0 0 69176.4974 0 8 69523.0000 69176.4974 0.50% - 1s 0 0 69176.4974 0 6 69523.0000 69176.4974 0.50% - 1s 0 0 69176.4974 0 6 69523.0000 69176.4974 0.50% - 1s 0 0 69176.4974 0 6 69523.0000 69176.4974 0.50% - 1s 0 0 69176.4974 0 6 69523.0000 69176.4974 0.50% - 1s 0 0 69176.4974 0 6 69523.0000 69176.4974 0.50% - 1s 0 0 69177.1254 0 7 69523.0000 69177.1254 0.50% - 1s 0 2 69195.8338 0 7 69523.0000 69195.8338 0.47% - 1s * 11 9 9 69420.000000 69295.0534 0.18% 47.1 1s * 16 3 6 69346.000000 69311.7204 0.05% 38.5 1s Cutting planes: Implied bound: 91 Flow cover: 12 Explored 19 nodes (4045 simplex iterations) in 1.94 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.934600000000e+04, best bound 6.934600000000e+04, gap 0.0%