Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:41:02 2013 Optimize a model with 10160 rows, 21030 columns and 72050 nonzeros Presolve removed 10 rows and 10 columns Presolve time: 0.23s Presolved: 10150 rows, 21020 columns, 62040 nonzeros Variable types: 11020 continuous, 10000 integer (10000 binary) Root relaxation: objective 2.337984e+04, 167 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 23379.8401 0 2 - 23379.8401 - - 1s 0 0 23389.6524 0 2 - 23389.6524 - - 1s 0 0 23390.1765 0 2 - 23390.1765 - - 1s 0 0 23393.4950 0 2 - 23393.4950 - - 1s 0 0 23396.3788 0 2 - 23396.3788 - - 1s 0 0 23396.8604 0 4 - 23396.8604 - - 1s 0 0 23398.7676 0 2 - 23398.7676 - - 1s 0 0 23400.2998 0 5 - 23400.2998 - - 2s 0 0 23400.8409 0 2 - 23400.8409 - - 2s 0 0 23402.2800 0 6 - 23402.2800 - - 2s 0 0 23402.6905 0 2 - 23402.6905 - - 2s 0 0 23404.3498 0 6 - 23404.3498 - - 2s 0 0 23405.0789 0 4 - 23405.0789 - - 2s 0 0 23405.4850 0 9 - 23405.4850 - - 2s 0 0 23405.9181 0 2 - 23405.9181 - - 2s 0 0 23406.6230 0 4 - 23406.6230 - - 2s 0 0 23406.7901 0 3 - 23406.7901 - - 2s 0 0 23407.3563 0 2 - 23407.3563 - - 2s 0 0 23407.3809 0 7 - 23407.3809 - - 2s 0 0 23407.4940 0 13 - 23407.4940 - - 2s 0 0 23407.8713 0 14 - 23407.8713 - - 3s 0 0 23407.8827 0 13 - 23407.8827 - - 3s 0 0 23407.8925 0 13 - 23407.8925 - - 3s 0 0 23407.9255 0 13 - 23407.9255 - - 3s 0 0 23407.9255 0 13 - 23407.9255 - - 3s 0 2 23407.9255 0 13 - 23407.9255 - - 4s 1 3 23549.0137 1 6 - 23407.9255 - 260 5s * 27 5 14 23527.309019 23527.3088 0.00% 192 5s Cutting planes: Gomory: 1 Implied bound: 19 Flow cover: 6 Explored 28 nodes (5708 simplex iterations) in 5.79 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.352730901912e+04, best bound 2.352730879316e+04, gap 0.0000%