Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:25:15 2013 Optimize a model with 3600 rows, 104300 columns and 214500 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.35s Presolved: 3500 rows, 104200 columns, 212400 nonzeros Variable types: 102200 continuous, 2000 integer (2000 binary) Root relaxation: objective 7.543716e+05, 7202 iterations, 0.57 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 754371.571 0 8 - 754371.571 - - 1s H 0 0 982042.73564 754371.571 23.2% - 1s 0 0 754447.547 0 8 982042.736 754447.547 23.2% - 1s 0 0 754486.105 0 4 982042.736 754486.105 23.2% - 2s 0 0 754501.614 0 8 982042.736 754501.614 23.2% - 2s 0 0 754505.991 0 6 982042.736 754505.991 23.2% - 2s 0 0 754506.566 0 8 982042.736 754506.566 23.2% - 2s 0 0 754507.702 0 8 982042.736 754507.702 23.2% - 3s 0 0 754510.882 0 8 982042.736 754510.882 23.2% - 3s 0 0 754510.988 0 8 982042.736 754510.988 23.2% - 3s 0 0 754512.210 0 8 982042.736 754512.210 23.2% - 4s 0 0 754512.552 0 8 982042.736 754512.552 23.2% - 4s 0 0 754512.552 0 8 982042.736 754512.552 23.2% - 5s 0 2 754512.552 0 8 982042.736 754512.552 23.2% - 6s 14 16 759749.615 7 6 982042.736 754769.728 23.1% 437 10s H 27 19 757834.90286 754769.728 0.40% 362 12s 50 19 755534.271 33 2 757834.903 754769.728 0.40% 209 15s * 85 16 63 756224.67995 754769.728 0.19% 131 18s 107 13 755980.538 79 2 756224.680 754769.728 0.19% 109 20s * 153 12 18 755729.74415 754769.728 0.13% 88.8 23s * 169 12 34 755679.58081 754769.728 0.12% 80.7 24s 172 12 755065.061 3 4 755679.581 754995.078 0.09% 81.1 25s Cutting planes: Implied bound: 16 Flow cover: 31 Explored 221 nodes (27235 simplex iterations) in 29.12 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.556795808113e+05, best bound 7.556447027981e+05, gap 0.0046%