Gurobi 5.0.1 (linux64) logging started Fri Jan 18 03:50:20 2013 Optimize a model with 2800 rows, 111000 columns and 292500 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.34s Presolved: 2700 rows, 110900 columns, 282400 nonzeros Variable types: 110200 continuous, 700 integer (700 binary) Root relaxation: objective 9.481640e+05, 6565 iterations, 0.57 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 948163.962 0 12 - 948163.962 - - 1s 0 0 948239.806 0 12 - 948239.806 - - 1s 0 0 948286.577 0 15 - 948286.577 - - 1s 0 0 948300.453 0 16 - 948300.453 - - 2s 0 0 948304.505 0 16 - 948304.505 - - 2s 0 0 948304.923 0 16 - 948304.923 - - 2s 0 0 948306.160 0 18 - 948306.160 - - 3s 0 0 948307.457 0 18 - 948307.457 - - 3s 0 0 948308.681 0 18 - 948308.681 - - 4s 0 0 948308.681 0 18 - 948308.681 - - 6s 0 2 948316.799 0 18 - 948316.799 - - 12s 9 11 952255.999 8 6 - 948425.328 - 205 17s 16 18 949582.490 15 3 - 948425.328 - 148 20s 29 31 949793.838 26 3 - 948425.328 - 89.5 25s 45 47 949853.945 42 3 - 948425.328 - 59.0 30s 71 73 949941.201 68 3 - 948425.328 - 38.5 35s 103 105 950235.830 99 3 - 948425.328 - 27.7 40s 136 138 950529.041 132 1 - 948425.328 - 21.5 45s 171 173 950702.946 167 1 - 948425.328 - 17.5 50s 219 221 950813.930 215 1 - 948425.328 - 14.0 55s * 232 148 228 950831.82871 948425.328 0.25% 13.3 57s 246 154 950392.116 11 3 950831.829 948457.426 0.25% 20.9 60s 281 161 950308.903 24 3 950831.829 949166.575 0.18% 26.4 65s H 288 126 950677.28338 949166.575 0.16% 26.3 66s * 304 116 46 950519.07513 949166.575 0.14% 25.5 68s 313 112 949501.029 3 8 950519.075 949362.997 0.12% 31.2 70s H 342 94 950389.35995 949535.072 0.09% 34.9 73s H 369 106 950378.00788 949535.072 0.09% 32.9 74s 370 107 950371.402 58 3 950378.008 949535.072 0.09% 32.8 75s * 371 104 59 950372.52037 949535.072 0.09% 32.7 75s 451 105 949938.666 17 3 950372.520 949897.358 0.05% 30.0 80s * 484 74 37 950276.23626 949924.613 0.04% 29.6 81s Cutting planes: Flow cover: 26 Explored 555 nodes (24390 simplex iterations) in 84.86 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.502762362556e+05, best bound 9.501821065164e+05, gap 0.0099%