Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:27:54 2013 Optimize a model with 638 rows, 33698 columns and 67338 nonzeros Presolve time: 0.05s Presolved: 638 rows, 33698 columns, 67338 nonzeros Variable types: 33640 continuous, 58 integer (58 binary) Root relaxation: objective 6.967988e+04, 1509 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 69679.8826 0 10 - 69679.8826 - - 0s H 0 0 72632.000000 69679.8826 4.06% - 0s 0 0 70174.4337 0 6 72632.0000 70174.4337 3.38% - 0s H 0 0 72457.456727 70174.4337 3.15% - 0s H 0 0 71744.000000 70174.4337 2.19% - 0s H 0 0 70306.000000 70174.4337 0.19% - 0s 0 0 70217.8382 0 5 70306.0000 70217.8382 0.13% - 0s 0 0 70221.9159 0 5 70306.0000 70221.9159 0.12% - 0s 0 0 70223.2795 0 5 70306.0000 70223.2795 0.12% - 0s 0 0 70226.2885 0 5 70306.0000 70226.2885 0.11% - 0s 0 0 70227.1713 0 6 70306.0000 70227.1713 0.11% - 0s 0 0 70229.8962 0 3 70306.0000 70229.8962 0.11% - 0s 0 0 70229.8962 0 3 70306.0000 70229.8962 0.11% - 0s 0 0 70248.4520 0 3 70306.0000 70248.4520 0.08% - 0s 0 0 70248.4520 0 7 70306.0000 70248.4520 0.08% - 0s 0 0 70248.4520 0 6 70306.0000 70248.4520 0.08% - 0s 0 0 70248.4520 0 5 70306.0000 70248.4520 0.08% - 0s 0 0 70251.6903 0 4 70306.0000 70251.6903 0.08% - 1s 0 0 70252.8759 0 3 70306.0000 70252.8759 0.08% - 1s 0 0 70252.8759 0 3 70306.0000 70252.8759 0.08% - 1s 0 0 70253.5181 0 3 70306.0000 70253.5181 0.07% - 1s 0 0 70264.9537 0 3 70306.0000 70264.9537 0.06% - 1s 0 0 70270.0417 0 2 70306.0000 70270.0417 0.05% - 1s 0 0 70270.0417 0 2 70306.0000 70270.0417 0.05% - 1s H 0 0 70274.000000 70270.0417 0.01% - 1s Cutting planes: Implied bound: 33 Flow cover: 2 Explored 0 nodes (3531 simplex iterations) in 1.28 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.027400000000e+04, best bound 7.027004166667e+04, gap 0.0056%