Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:13:53 2013 Optimize a model with 759 rows, 47679 columns and 95289 nonzeros Presolve time: 0.07s Presolved: 759 rows, 47679 columns, 95289 nonzeros Variable types: 47610 continuous, 69 integer (69 binary) Root relaxation: objective 7.461858e+04, 2047 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 74618.5829 0 9 - 74618.5829 - - 0s H 0 0 82775.000000 74618.5829 9.85% - 0s 0 0 75055.6752 0 6 82775.0000 75055.6752 9.33% - 0s H 0 0 82179.000000 75055.6752 8.67% - 0s 0 0 75178.9973 0 6 82179.0000 75178.9973 8.52% - 0s H 0 0 81775.000000 75178.9973 8.07% - 0s 0 0 75238.8629 0 7 81775.0000 75238.8629 7.99% - 0s H 0 0 78200.000000 75238.8629 3.79% - 0s 0 0 75256.5339 0 4 78200.0000 75256.5339 3.76% - 0s H 0 0 77169.843137 75256.5339 2.48% - 0s H 0 0 76545.000000 75256.5339 1.68% - 0s 0 0 75256.6088 0 3 76545.0000 75256.6088 1.68% - 0s H 0 0 76516.000000 75256.6088 1.65% - 0s 0 0 75256.6088 0 3 76516.0000 75256.6088 1.65% - 0s 0 0 75256.6088 0 3 76516.0000 75256.6088 1.65% - 0s 0 0 75256.6088 0 3 76516.0000 75256.6088 1.65% - 0s 0 2 75265.2627 0 3 76516.0000 75265.2627 1.63% - 1s * 5 3 5 75411.000000 75391.0800 0.03% 49.8 1s Cutting planes: Implied bound: 77 Flow cover: 6 Explored 9 nodes (2704 simplex iterations) in 1.36 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.541100000000e+04, best bound 7.541100000000e+04, gap 0.0%