Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:25:20 2013 Optimize a model with 627 rows, 32547 columns and 65037 nonzeros Presolve time: 0.04s Presolved: 627 rows, 32547 columns, 65037 nonzeros Variable types: 32490 continuous, 57 integer (57 binary) Root relaxation: objective 5.726604e+04, 1098 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 57266.0387 0 8 - 57266.0387 - - 0s H 0 0 61304.000000 57266.0387 6.59% - 0s H 0 0 61240.000000 57266.0387 6.49% - 0s H 0 0 58233.000000 57266.0387 1.66% - 0s 0 0 57559.4951 0 6 58233.0000 57559.4951 1.16% - 0s 0 0 57567.5724 0 6 58233.0000 57567.5724 1.14% - 0s 0 0 57573.9704 0 6 58233.0000 57573.9704 1.13% - 0s 0 0 57577.9768 0 6 58233.0000 57577.9768 1.12% - 0s 0 0 57580.1068 0 6 58233.0000 57580.1068 1.12% - 0s 0 0 57581.1236 0 6 58233.0000 57581.1236 1.12% - 0s 0 0 57581.2182 0 4 58233.0000 57581.2182 1.12% - 0s 0 0 57581.5777 0 9 58233.0000 57581.5777 1.12% - 0s 0 0 57583.5195 0 4 58233.0000 57583.5195 1.12% - 0s 0 0 57583.6962 0 8 58233.0000 57583.6962 1.12% - 0s 0 0 57584.4122 0 6 58233.0000 57584.4122 1.11% - 0s H 0 0 58192.000000 57584.4122 1.04% - 0s 0 0 57584.9181 0 7 58192.0000 57584.9181 1.04% - 0s H 0 0 57680.000000 57584.9181 0.16% - 1s 0 0 57584.9181 0 6 57680.0000 57584.9181 0.16% - 1s 0 0 57584.9181 0 5 57680.0000 57584.9181 0.16% - 1s 0 0 57593.3493 0 5 57680.0000 57593.3493 0.15% - 1s 0 0 57603.8270 0 5 57680.0000 57603.8270 0.13% - 1s 0 0 57604.1173 0 5 57680.0000 57604.1173 0.13% - 1s 0 0 57607.8850 0 5 57680.0000 57607.8850 0.13% - 1s 0 0 57607.8869 0 5 57680.0000 57607.8869 0.13% - 1s 0 0 57608.6042 0 5 57680.0000 57608.6042 0.12% - 1s 0 0 57608.9061 0 5 57680.0000 57608.9061 0.12% - 1s 0 0 57608.9758 0 5 57680.0000 57608.9758 0.12% - 1s 0 0 57609.0003 0 5 57680.0000 57609.0003 0.12% - 1s 0 0 57624.3235 0 2 57680.0000 57624.3235 0.10% - 1s 0 0 57624.3347 0 3 57680.0000 57624.3347 0.10% - 1s H 0 0 57637.000000 57624.3347 0.02% - 1s 0 2 57631.6424 0 3 57637.0000 57631.6424 0.01% - 1s Cutting planes: Implied bound: 56 Flow cover: 3 Explored 1 nodes (2636 simplex iterations) in 1.72 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.763700000000e+04, best bound 5.763164242424e+04, gap 0.0093%