Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:18:20 2013 Optimize a model with 594 rows, 29214 columns and 58374 nonzeros Presolve time: 0.04s Presolved: 594 rows, 29214 columns, 58374 nonzeros Variable types: 29160 continuous, 54 integer (54 binary) Root relaxation: objective 6.131428e+04, 1189 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 61314.2809 0 7 - 61314.2809 - - 0s H 0 0 61966.000000 61314.2809 1.05% - 0s 0 0 61523.6915 0 5 61966.0000 61523.6915 0.71% - 0s 0 0 61544.9464 0 4 61966.0000 61544.9464 0.68% - 0s H 0 0 61643.000000 61544.9464 0.16% - 0s 0 0 61549.3058 0 4 61643.0000 61549.3058 0.15% - 0s 0 0 61549.3058 0 7 61643.0000 61549.3058 0.15% - 0s 0 0 61549.3058 0 5 61643.0000 61549.3058 0.15% - 0s 0 0 61549.3058 0 4 61643.0000 61549.3058 0.15% - 0s 0 0 61549.3058 0 5 61643.0000 61549.3058 0.15% - 0s 0 0 61550.8789 0 4 61643.0000 61550.8789 0.15% - 0s 0 0 61550.9027 0 4 61643.0000 61550.9027 0.15% - 0s 0 0 61551.1583 0 4 61643.0000 61551.1583 0.15% - 0s 0 0 61568.6237 0 3 61643.0000 61568.6237 0.12% - 0s 0 0 61608.5909 0 4 61643.0000 61608.5909 0.06% - 0s 0 0 61613.7971 0 2 61643.0000 61613.7971 0.05% - 0s 0 2 61614.4545 0 2 61643.0000 61614.4545 0.05% - 0s Cutting planes: Implied bound: 87 Flow cover: 2 Explored 5 nodes (2873 simplex iterations) in 0.84 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.164300000000e+04, best bound 6.164300000000e+04, gap 0.0%