Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:32:39 2013 Optimize a model with 10800 rows, 45150 columns and 120250 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.28s Presolved: 10750 rows, 45100 columns, 110200 nonzeros Variable types: 35100 continuous, 10000 integer (10000 binary) Root relaxation: objective 2.198499e+05, 4432 iterations, 0.17 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 219849.939 0 4 - 219849.939 - - 0s 0 0 219895.548 0 3 - 219895.548 - - 0s 0 0 219910.859 0 2 - 219910.859 - - 1s 0 0 219917.304 0 2 - 219917.304 - - 1s 0 0 219917.304 0 2 - 219917.304 - - 1s 0 0 219917.304 0 2 - 219917.304 - - 1s 0 0 219919.066 0 2 - 219919.066 - - 1s 0 0 219919.066 0 2 - 219919.066 - - 1s 0 0 219919.066 0 2 - 219919.066 - - 1s H 0 0 223801.34234 219919.066 1.73% - 2s 0 2 219919.066 0 2 223801.342 219919.066 1.73% - 2s 54 31 221792.359 36 2 223801.342 220950.526 1.27% 54.9 5s 203 45 222429.930 177 6 223801.342 220950.526 1.27% 25.3 10s 343 55 223359.201 312 2 223801.342 220950.526 1.27% 17.8 15s H 432 51 223448.22129 220950.526 1.12% 15.2 17s 521 54 221360.472 4 4 223448.221 221014.973 1.09% 13.9 20s * 543 17 15 221990.67135 221014.973 0.44% 15.3 20s Cutting planes: Gomory: 1 Implied bound: 76 Flow cover: 1 Explored 597 nodes (15542 simplex iterations) in 22.38 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.219906713538e+05, best bound 2.219802889396e+05, gap 0.0047%