Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:52:22 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 6.552769e+04, 1691 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 65527.6930 0 7 - 65527.6930 - - 0s H 0 0 68398.000000 65527.6930 4.20% - 0s 0 0 65852.3129 0 8 68398.0000 65852.3129 3.72% - 0s H 0 0 68320.000000 65852.3129 3.61% - 0s H 0 0 66239.000000 65852.3129 0.58% - 0s 0 0 65885.5363 0 6 66239.0000 65885.5363 0.53% - 0s 0 0 65885.5363 0 7 66239.0000 65885.5363 0.53% - 0s 0 0 65885.5363 0 8 66239.0000 65885.5363 0.53% - 0s 0 0 65886.0223 0 6 66239.0000 65886.0223 0.53% - 0s 0 0 65902.7195 0 6 66239.0000 65902.7195 0.51% - 0s 0 0 65903.3911 0 6 66239.0000 65903.3911 0.51% - 0s 0 0 65904.2010 0 6 66239.0000 65904.2010 0.51% - 0s 0 2 65907.8355 0 6 66239.0000 65907.8355 0.50% - 1s * 7 4 5 66138.000000 66007.7446 0.20% 71.0 1s Cutting planes: Implied bound: 129 Flow cover: 4 Explored 17 nodes (4258 simplex iterations) in 1.33 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.613800000000e+04, best bound 6.613800000000e+04, gap 0.0%