Gurobi 5.0.1 (linux64) logging started Fri Jan 18 08:27:42 2013 Optimize a model with 3400 rows, 201300 columns and 1403400 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 2.37s Presolved: 3300 rows, 201200 columns, 1303300 nonzeros Variable types: 200200 continuous, 1000 integer (1000 binary) Root relaxation: objective 8.570461e+05, 6759 iterations, 1.40 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 857046.104 0 3 - 857046.104 - - 4s 0 0 857050.886 0 3 - 857050.886 - - 6s 0 0 857050.886 0 3 - 857050.886 - - 7s 0 0 857051.290 0 4 - 857051.290 - - 8s 0 0 857051.290 0 4 - 857051.290 - - 9s 0 0 857051.290 0 4 - 857051.290 - - 11s 0 2 857061.751 0 4 - 857061.751 - - 26s 4 6 858414.919 4 6 - 858225.942 - 212 30s 12 14 859113.281 12 3 - 858225.942 - 115 35s 21 23 859800.554 21 3 - 858225.942 - 88.4 40s 33 35 860718.535 33 1 - 858225.942 - 73.0 45s 45 47 861605.017 45 1 - 858225.942 - 64.0 50s 57 59 862298.403 57 1 - 858225.942 - 59.1 55s 70 72 863681.870 70 1 - 858225.942 - 55.9 60s 89 91 864205.545 89 1 - 858225.942 - 45.6 65s 109 111 864782.167 109 1 - 858225.942 - 38.8 70s 136 138 865526.588 136 1 - 858225.942 - 32.3 75s 187 189 866504.952 187 1 - 858225.942 - 24.4 80s 262 264 867450.480 262 1 - 858225.942 - 17.8 85s * 301 136 301 867735.48414 858225.942 1.10% 15.8 88s 304 132 858333.459 2 6 867735.484 858239.942 1.09% 16.1 90s 315 141 858831.307 13 3 867735.484 858239.942 1.09% 16.6 95s H 331 11 859200.04055 858239.942 0.11% 16.3 99s 336 10 858312.493 3 3 859200.041 858294.754 0.11% 17.0 100s H 358 21 859174.54361 858294.754 0.10% 17.1 101s 375 22 858451.167 3 3 859174.544 858451.167 0.08% 19.8 105s H 412 28 859043.36273 858451.167 0.07% 19.3 108s 436 34 859022.469 49 2 859043.363 858451.167 0.07% 18.5 110s H 439 33 859022.53041 858451.167 0.07% 18.4 110s 492 35 859001.567 18 3 859022.530 858660.751 0.04% 19.2 115s Cutting planes: Flow cover: 4 Explored 543 nodes (17524 simplex iterations) in 118.63 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.590225304113e+05, best bound 8.589468474328e+05, gap 0.0088%