Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:23:22 2013 Optimize a model with 20700 rows, 45100 columns and 130050 nonzeros Presolve removed 150 rows and 100 columns Presolve time: 0.36s Presolved: 20550 rows, 45000 columns, 109900 nonzeros Variable types: 35050 continuous, 9950 integer (9950 binary) Root relaxation: objective 1.650739e+05, 10179 iterations, 0.49 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 165073.856 0 2 - 165073.856 - - 1s 0 0 165248.565 0 4 - 165248.565 - - 1s 0 0 165340.326 0 4 - 165340.326 - - 1s 0 0 165392.847 0 3 - 165392.847 - - 1s 0 0 165394.764 0 3 - 165394.764 - - 1s 0 0 165404.793 0 1 - 165404.793 - - 2s 0 0 165410.231 0 1 - 165410.231 - - 2s 0 0 165414.436 0 2 - 165414.436 - - 2s 0 0 165415.801 0 2 - 165415.801 - - 2s 0 0 165418.539 0 2 - 165418.539 - - 2s 0 0 165419.552 0 2 - 165419.552 - - 3s 0 0 165419.758 0 2 - 165419.758 - - 3s 0 2 165422.036 0 2 - 165422.036 - - 5s 70 72 165590.368 56 3 - 165472.618 - 57.7 10s H 93 46 165643.33576 165472.618 0.10% 55.9 11s 355 166 cutoff 34 165643.336 165511.230 0.08% 23.1 15s H 551 187 165629.95229 165532.014 0.06% 17.6 17s H 700 191 165622.03860 165543.673 0.05% 15.2 19s 701 191 165619.906 33 2 165622.039 165543.673 0.05% 15.2 20s 825 245 165591.383 17 1 165622.039 165543.673 0.05% 20.1 25s 1534 200 165611.984 24 1 165622.039 165568.105 0.03% 12.9 30s 2275 125 165597.879 19 1 165622.039 165597.879 0.01% 10.0 35s Cutting planes: Gomory: 6 Flow cover: 10 Explored 2424 nodes (34447 simplex iterations) in 36.18 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.656220386021e+05, best bound 1.656063070720e+05, gap 0.0095%