Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:12:22 2013 Optimize a model with 3000 rows, 121100 columns and 402800 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.49s Presolved: 2900 rows, 121000 columns, 382700 nonzeros Variable types: 120200 continuous, 800 integer (800 binary) Root relaxation: objective 9.481640e+05, 6230 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 948207.128 0 12 - 948207.128 - - 2s 0 0 948250.546 0 17 - 948250.546 - - 2s 0 0 948259.887 0 18 - 948259.887 - - 2s 0 0 948265.610 0 18 - 948265.610 - - 3s 0 0 948265.610 0 18 - 948265.610 - - 3s 0 0 948267.308 0 17 - 948267.308 - - 3s 0 0 948267.366 0 18 - 948267.366 - - 4s 0 0 948267.366 0 18 - 948267.366 - - 4s 0 0 948267.594 0 18 - 948267.594 - - 5s 0 0 948267.594 0 18 - 948267.594 - - 5s 0 0 948267.594 0 18 - 948267.594 - - 8s 0 2 948272.293 0 18 - 948272.293 - - 13s 13 15 949366.576 13 3 - 948445.883 - 98.4 15s 40 42 949819.256 38 3 - 948445.883 - 44.1 20s 57 59 949871.198 55 3 - 948445.883 - 31.9 25s 68 70 949894.239 66 3 - 948445.883 - 27.3 30s 87 89 949940.913 85 3 - 948445.883 - 21.9 35s 114 116 950035.788 112 3 - 948445.883 - 17.2 40s 133 135 950273.340 131 3 - 948445.883 - 15.1 45s 159 161 950577.128 157 3 - 948445.883 - 13.0 50s 225 227 950814.627 223 1 - 948445.883 - 9.6 55s 258 260 950870.202 256 1 - 948445.883 - 8.6 60s * 267 161 265 950891.77105 948445.883 0.26% 8.4 61s 277 161 948721.142 6 6 950891.771 948576.094 0.24% 13.8 65s 298 169 948668.974 4 3 950891.771 948601.110 0.24% 23.2 70s 321 171 950598.176 4 3 950891.771 948884.785 0.21% 33.3 75s 348 178 950178.054 21 3 950891.771 948917.077 0.21% 38.3 80s H 353 133 950729.64720 948917.077 0.19% 38.0 81s 369 138 950558.628 41 3 950729.647 948917.077 0.19% 37.4 85s * 391 134 63 950627.92571 948917.077 0.18% 35.8 87s 403 131 949389.866 6 6 950627.926 949146.387 0.16% 39.7 90s 432 126 949694.872 16 6 950627.926 949468.272 0.12% 46.7 95s H 463 98 950372.64298 949468.272 0.10% 45.8 97s * 501 82 39 950276.23626 949738.307 0.06% 44.3 99s 528 63 cutoff 71 950276.236 949908.710 0.04% 42.4 100s Cutting planes: Flow cover: 24 Explored 635 nodes (32820 simplex iterations) in 104.78 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%