Gurobi 5.0.1 (linux64) logging started Fri Jan 18 03:27:20 2013 Optimize a model with 2800 rows, 126500 columns and 401500 nonzeros Presolve removed 100 rows and 5700 columns Presolve time: 0.63s Presolved: 2700 rows, 120800 columns, 381500 nonzeros Variable types: 120100 continuous, 700 integer (700 binary) Root relaxation: objective 9.053666e+05, 6721 iterations, 0.79 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 905366.638 0 8 - 905366.638 - - 1s 0 0 905391.881 0 8 - 905391.881 - - 2s 0 0 905414.299 0 8 - 905414.299 - - 3s 0 0 905414.522 0 8 - 905414.522 - - 3s 0 0 905416.793 0 8 - 905416.793 - - 3s 0 0 905419.103 0 8 - 905419.103 - - 4s 0 0 905420.123 0 8 - 905420.123 - - 4s 0 0 905420.599 0 8 - 905420.599 - - 4s 0 0 905420.750 0 8 - 905420.750 - - 4s 0 0 905420.750 0 8 - 905420.750 - - 5s 0 0 905420.862 0 8 - 905420.862 - - 5s 0 0 905420.862 0 8 - 905420.862 - - 7s 0 2 905480.168 0 8 - 905480.168 - - 14s 4 6 906790.929 3 8 - 905535.404 - 313 17s 6 8 907302.399 4 8 - 905535.404 - 360 20s 16 18 906702.675 14 6 - 905535.404 - 201 26s 24 26 906957.316 22 10 - 905535.404 - 163 30s 34 36 907391.623 32 9 - 905535.404 - 142 35s 48 50 907883.918 46 6 - 905535.404 - 130 40s 63 65 908261.343 61 4 - 905535.404 - 112 45s 80 82 908490.107 78 4 - 905535.404 - 96.3 50s 99 101 908700.912 97 10 - 905535.404 - 85.3 55s 119 121 909240.896 117 4 - 905535.404 - 77.2 60s 139 141 909569.868 137 7 - 905535.404 - 71.4 65s 157 159 909946.813 155 4 - 905535.404 - 66.9 70s 179 181 911367.558 177 4 - 905535.404 - 62.8 75s 201 203 912213.757 198 5 - 905535.404 - 61.2 80s 224 226 913174.328 221 1 - 905535.404 - 58.7 85s 307 309 922702.312 295 4 - 905535.404 - 46.7 90s * 358 306 345 922754.30090 905535.404 1.87% 40.3 93s 378 318 907949.612 18 4 922754.301 905663.580 1.85% 42.9 95s * 386 55 26 908018.35356 905663.580 0.26% 42.2 95s 426 70 907061.921 4 4 908018.354 906161.121 0.20% 47.1 100s 469 89 906481.298 7 7 908018.354 906186.167 0.20% 51.1 105s 504 108 907700.684 8 8 908018.354 906431.028 0.17% 55.5 110s 528 99 907643.625 10 8 908018.354 906645.179 0.15% 60.7 115s 562 88 907107.941 5 5 908018.354 906779.681 0.14% 64.6 120s 600 75 907310.494 7 5 908018.354 906957.591 0.12% 68.8 125s 653 56 cutoff 34 908018.354 907401.443 0.07% 70.4 130s Cutting planes: Flow cover: 16 Explored 709 nodes (58341 simplex iterations) in 133.49 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.080183535562e+05, best bound 9.079346156932e+05, gap 0.0092%