Gurobi 5.0.1 (linux64) logging started Fri Jan 18 06:00:29 2013 Optimize a model with 25800 rows, 75150 columns and 225250 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.87s Presolved: 25750 rows, 75100 columns, 200200 nonzeros Variable types: 50100 continuous, 25000 integer (25000 binary) Root relaxation: objective 1.626233e+05, 3920 iterations, 0.26 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 - - 1s 0 0 162759.583 0 16 - 162759.583 - - 2s 0 0 162765.697 0 12 - 162765.697 - - 2s 0 0 162766.040 0 12 - 162766.040 - - 3s 0 0 162766.040 0 12 - 162766.040 - - 3s 0 0 162767.884 0 14 - 162767.884 - - 3s 0 0 162767.884 0 14 - 162767.884 - - 4s 0 0 162767.957 0 14 - 162767.957 - - 4s 0 0 162767.957 0 14 - 162767.957 - - 5s 0 0 162767.957 0 14 - 162767.957 - - 5s 0 2 162767.957 0 14 - 162767.957 - - 9s 2 4 164689.513 1 6 - 162779.904 - 476 10s * 31 31 16 167231.88469 162863.281 2.61% 137 12s H 32 10 162929.29610 162863.281 0.04% 132 12s 92 7 162916.266 74 2 162929.296 162863.281 0.04% 48.4 15s * 170 10 146 162918.21263 162863.281 0.03% 29.3 18s 199 6 162905.664 36 2 162918.213 162863.281 0.03% 26.8 20s Cutting planes: Gomory: 2 Implied bound: 59 Flow cover: 6 Explored 258 nodes (12607 simplex iterations) in 22.27 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.629182126288e+05, best bound 1.629182126288e+05, gap 0.0%