Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:52:38 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 6.165580e+04, 1564 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 61655.7958 0 7 - 61655.7958 - - 0s H 0 0 64423.000000 61655.7958 4.30% - 0s 0 0 61981.2796 0 6 64423.0000 61981.2796 3.79% - 0s 0 0 62019.6212 0 7 64423.0000 62019.6212 3.73% - 0s 0 0 62029.6716 0 6 64423.0000 62029.6716 3.72% - 0s 0 0 62034.0346 0 6 64423.0000 62034.0346 3.71% - 0s 0 0 62035.7378 0 6 64423.0000 62035.7378 3.71% - 0s 0 0 62035.7378 0 6 64423.0000 62035.7378 3.71% - 0s H 0 0 62176.000000 62035.7378 0.23% - 0s 0 0 62035.7378 0 7 62176.0000 62035.7378 0.23% - 1s 0 0 62035.7378 0 6 62176.0000 62035.7378 0.23% - 1s 0 0 62035.7378 0 7 62176.0000 62035.7378 0.23% - 1s 0 0 62035.7378 0 5 62176.0000 62035.7378 0.23% - 1s 0 0 62035.7378 0 5 62176.0000 62035.7378 0.23% - 1s 0 0 62037.7119 0 5 62176.0000 62037.7119 0.22% - 1s 0 0 62038.3971 0 5 62176.0000 62038.3971 0.22% - 1s 0 0 62038.3971 0 5 62176.0000 62038.3971 0.22% - 1s 0 0 62038.3971 0 5 62176.0000 62038.3971 0.22% - 1s 0 2 62040.1353 0 5 62176.0000 62040.1353 0.22% - 1s Cutting planes: Implied bound: 83 Flow cover: 9 Explored 10 nodes (3551 simplex iterations) in 1.65 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.217600000000e+04, best bound 6.217122397773e+04, gap 0.0077%