Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:52:43 2013 Optimize a model with 715 rows, 42315 columns and 84565 nonzeros Presolve time: 0.06s Presolved: 715 rows, 42315 columns, 84565 nonzeros Variable types: 42250 continuous, 65 integer (65 binary) Root relaxation: objective 6.581396e+04, 1593 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 65813.9575 0 7 - 65813.9575 - - 0s H 0 0 69510.000000 65813.9575 5.32% - 0s 0 0 66065.8349 0 5 69510.0000 66065.8349 4.95% - 0s H 0 0 69457.247822 66065.8349 4.88% - 0s H 0 0 68078.000000 66065.8349 2.96% - 0s 0 0 66122.1747 0 4 68078.0000 66122.1747 2.87% - 0s H 0 0 68039.000000 66122.1747 2.82% - 0s 0 0 66141.3830 0 4 68039.0000 66141.3830 2.79% - 0s H 0 0 67952.000000 66141.3830 2.66% - 0s 0 0 66149.9543 0 3 67952.0000 66149.9543 2.65% - 0s H 0 0 67932.000000 66149.9543 2.62% - 0s 0 0 66149.9543 0 3 67932.0000 66149.9543 2.62% - 0s H 0 0 67876.000000 66149.9543 2.54% - 0s 0 0 66149.9543 0 3 67876.0000 66149.9543 2.54% - 0s 0 0 66149.9543 0 3 67876.0000 66149.9543 2.54% - 0s H 0 0 67034.000000 66149.9543 1.32% - 1s 0 2 66150.4015 0 3 67034.0000 66150.4015 1.32% - 1s H 8 7 66794.000000 66232.6331 0.84% 32.8 1s H 10 7 66503.000000 66232.6331 0.41% 26.8 1s H 11 5 66410.000000 66232.6331 0.27% 25.3 1s * 12 4 12 66405.000000 66232.6331 0.26% 24.3 1s Cutting planes: Implied bound: 95 Flow cover: 2 Explored 19 nodes (2547 simplex iterations) in 1.33 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.640500000000e+04, best bound 6.640500000000e+04, gap 0.0%