Gurobi 5.0.1 (linux64) logging started Mon Dec 10 23:31:36 2012 Optimize a model with 2190 rows, 2160 columns and 7154 nonzeros Presolve removed 101 rows and 60 columns Presolve time: 0.02s Presolved: 2089 rows, 2100 columns, 6914 nonzeros Variable types: 1399 continuous, 701 integer (701 binary) Root relaxation: objective 1.937837e+05, 1058 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 193783.652 0 358 - 193783.652 - - 0s H 0 0 310682.00000 193783.652 37.6% - 0s 0 0 239585.616 0 88 310682.000 239585.616 22.9% - 0s 0 0 241196.878 0 78 310682.000 241196.878 22.4% - 0s 0 0 241714.428 0 37 310682.000 241714.428 22.2% - 0s 0 0 241785.465 0 40 310682.000 241785.465 22.2% - 0s H 0 0 243615.00000 241785.465 0.75% - 0s 0 2 241792.732 0 40 243615.000 241792.732 0.75% - 0s H 54 53 242897.00000 241792.732 0.45% 3.5 0s H 108 103 242771.00000 241792.732 0.40% 3.2 0s * 131 119 124 242657.00000 241792.732 0.36% 3.5 0s H 600 138 242151.00000 241919.875 0.10% 3.9 0s Cutting planes: Gomory: 12 Cover: 1 Implied bound: 1 Flow cover: 101 Flow path: 71 Explored 5107 nodes (18628 simplex iterations) in 3.89 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.421509999973e+05, best bound 2.421268326877e+05, gap 0.0100%