Gurobi 5.0.1 (linux64) logging started Mon Dec 10 23:29:44 2012 Optimize a model with 2190 rows, 2160 columns and 7153 nonzeros Presolve removed 99 rows and 61 columns Presolve time: 0.02s Presolved: 2091 rows, 2099 columns, 6921 nonzeros Variable types: 1398 continuous, 701 integer (701 binary) Root relaxation: objective 1.892453e+05, 1077 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 189245.254 0 386 - 189245.254 - - 0s H 0 0 331860.00000 189245.254 43.0% - 0s H 0 0 331275.00000 189245.254 42.9% - 0s 0 0 239431.395 0 76 331275.000 239431.395 27.7% - 0s 0 0 241153.982 0 61 331275.000 241153.982 27.2% - 0s 0 0 241822.874 0 1 331275.000 241822.874 27.0% - 0s 0 0 241822.874 0 1 331275.000 241822.874 27.0% - 0s H 0 0 241824.00000 241822.874 0.00% - 0s Cutting planes: Gomory: 24 Cover: 4 Implied bound: 2 Flow cover: 222 Flow path: 167 Explored 0 nodes (1588 simplex iterations) in 0.20 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.418240000000e+05, best bound 2.418228741722e+05, gap 0.0005%