Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:08:11 2013 Optimize a model with 2000 rows, 101100 columns and 203800 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.44s Presolved: 1900 rows, 101000 columns, 203200 nonzeros Variable types: 100700 continuous, 300 integer (300 binary) Root relaxation: objective 7.543716e+05, 6282 iterations, 0.65 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 799636.19752 754371.571 5.66% - 1s H 0 0 757248.92496 754371.571 0.38% - 2s 0 0 754446.935 0 6 757248.925 754446.935 0.37% - 2s 0 0 754477.662 0 6 757248.925 754477.662 0.37% - 2s 0 0 754507.063 0 10 757248.925 754507.063 0.36% - 3s 0 0 754516.615 0 8 757248.925 754516.615 0.36% - 3s 0 0 754518.877 0 8 757248.925 754518.877 0.36% - 3s 0 0 754519.540 0 8 757248.925 754519.540 0.36% - 4s 0 0 754521.638 0 8 757248.925 754521.638 0.36% - 4s 0 0 754528.165 0 8 757248.925 754528.165 0.36% - 4s 0 0 754528.450 0 8 757248.925 754528.450 0.36% - 5s 0 0 754529.273 0 8 757248.925 754529.273 0.36% - 5s 0 0 754529.273 0 8 757248.925 754529.273 0.36% - 6s 0 2 754531.140 0 8 757248.925 754531.140 0.36% - 7s 13 12 755313.174 12 4 757248.925 754736.728 0.33% 121 10s H 27 12 756060.44872 754736.728 0.18% 65.0 11s H 54 19 755703.34771 754769.728 0.12% 55.9 14s * 58 19 15 755674.17564 754769.728 0.12% 53.9 14s 63 16 755029.774 3 2 755674.176 754849.118 0.11% 63.1 15s Cutting planes: Flow cover: 38 Explored 100 nodes (14432 simplex iterations) in 17.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.556741756437e+05, best bound 7.556261737311e+05, gap 0.0064%