Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:31:47 2013 Optimize a model with 10800 rows, 45150 columns and 120250 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.29s Presolved: 10750 rows, 45100 columns, 110200 nonzeros Variable types: 35100 continuous, 10000 integer (10000 binary) Root relaxation: objective 1.626233e+05, 3454 iterations, 0.14 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 162623.326 0 10 - 162623.326 - - 0s 0 0 162759.746 0 14 - 162759.746 - - 0s 0 0 162763.426 0 14 - 162763.426 - - 1s 0 0 162763.832 0 14 - 162763.832 - - 1s 0 0 162763.832 0 14 - 162763.832 - - 1s 0 0 162763.832 0 14 - 162763.832 - - 1s H 0 0 163996.61104 162763.832 0.75% - 1s 0 2 162763.832 0 14 163996.611 162763.832 0.75% - 2s H 28 5 162920.60048 162863.281 0.04% 57.2 3s 122 6 162916.683 108 2 162920.600 162863.281 0.04% 15.6 5s * 173 6 157 162918.20364 162863.281 0.03% 12.3 6s Cutting planes: Gomory: 2 Implied bound: 59 Flow cover: 5 Explored 224 nodes (6898 simplex iterations) in 7.29 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.629182036448e+05, best bound 1.629028976737e+05, gap 0.0094%