Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:11:20 2013 Optimize a model with 2600 rows, 113600 columns and 291300 nonzeros Presolve removed 100 rows and 2900 columns Presolve time: 0.33s Presolved: 2500 rows, 110700 columns, 281300 nonzeros Variable types: 110100 continuous, 600 integer (600 binary) Root relaxation: objective 8.570461e+05, 7106 iterations, 0.52 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 - - 1s H 0 0 1011290.3926 857046.104 15.3% - 1s 0 0 857083.871 0 3 1011290.39 857083.871 15.2% - 1s 0 0 857089.499 0 3 1011290.39 857089.499 15.2% - 1s 0 0 857102.261 0 3 1011290.39 857102.261 15.2% - 2s 0 0 857104.581 0 3 1011290.39 857104.581 15.2% - 2s 0 0 857105.718 0 3 1011290.39 857105.718 15.2% - 2s 0 0 857106.421 0 3 1011290.39 857106.421 15.2% - 2s 0 0 857106.738 0 3 1011290.39 857106.738 15.2% - 3s 0 0 857106.997 0 3 1011290.39 857106.997 15.2% - 3s 0 0 857107.300 0 3 1011290.39 857107.300 15.2% - 3s 0 0 857107.580 0 3 1011290.39 857107.580 15.2% - 4s 0 0 857107.580 0 3 1011290.39 857107.580 15.2% - 4s 0 2 857173.614 0 3 1011290.39 857173.614 15.2% - 5s 15 17 858744.297 15 3 1011290.39 857997.848 15.2% 123 10s H 27 27 883409.37630 857997.848 2.88% 83.6 12s 36 38 859212.575 36 8 883409.376 857997.848 2.88% 78.0 15s H 54 54 878702.18380 857997.848 2.36% 64.8 17s 65 67 859812.619 65 5 878702.184 857997.848 2.36% 59.9 20s 79 81 861040.485 79 5 878702.184 857997.848 2.36% 56.0 25s H 81 69 863967.50534 857997.848 0.69% 55.2 25s 107 82 863051.420 107 4 863967.505 857997.848 0.69% 47.6 30s H 108 77 863103.20523 857997.848 0.59% 47.1 30s 155 104 861824.004 7 3 863103.205 858197.483 0.57% 40.4 35s H 162 63 861837.37949 858197.483 0.42% 39.8 36s H 189 32 859304.61347 858237.715 0.12% 37.6 39s 190 33 859038.494 14 3 859304.613 858237.715 0.12% 37.6 40s * 211 39 33 859303.79749 858237.715 0.12% 35.0 41s 237 56 858816.067 17 4 859303.797 858323.367 0.11% 39.0 45s H 297 90 859298.49746 858563.774 0.09% 38.0 49s 297 91 858849.220 15 3 859298.497 858563.774 0.09% 38.0 50s * 308 78 26 859210.39245 858563.774 0.08% 37.2 50s 476 218 859209.917 160 4 859210.392 858680.444 0.06% 26.5 55s H 544 25 859029.76689 858904.273 0.01% 25.8 58s 583 51 859029.444 43 3 859029.767 858923.045 0.01% 24.4 60s * 597 34 24 859025.39106 858938.795 0.01% 24.0 60s Cutting planes: Flow cover: 9 Explored 599 nodes (23577 simplex iterations) in 60.56 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.590253910645e+05, best bound 8.589430275831e+05, gap 0.0096%