Gurobi 5.0.1 (linux64) logging started Sat Dec 8 03:30:54 2012 Optimize a model with 555 rows, 540 columns and 1777 nonzeros Presolve removed 52 rows and 31 columns Presolve time: 0.01s Presolved: 503 rows, 509 columns, 1689 nonzeros Variable types: 339 continuous, 170 integer (170 binary) Root relaxation: objective 5.222160e+04, 249 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 52221.6007 0 77 - 52221.6007 - - 0s H 0 0 87290.000000 52221.6007 40.2% - 0s H 0 0 86491.000000 52221.6007 39.6% - 0s 0 0 61914.5787 0 26 86491.0000 61914.5787 28.4% - 0s 0 0 62149.8997 0 34 86491.0000 62149.8997 28.1% - 0s 0 0 62207.9797 0 21 86491.0000 62207.9797 28.1% - 0s 0 0 62251.7143 0 21 86491.0000 62251.7143 28.0% - 0s 0 0 62255.7251 0 19 86491.0000 62255.7251 28.0% - 0s 0 0 62264.7428 0 20 86491.0000 62264.7428 28.0% - 0s 0 2 62265.1679 0 20 86491.0000 62265.1679 28.0% - 0s H 19 19 63850.083645 62266.4585 2.48% 5.9 0s H 20 20 63582.000000 62266.4585 2.07% 5.8 0s H 27 26 63089.000000 62266.4585 1.30% 6.4 0s * 32 27 27 63087.000000 62266.4585 1.30% 6.0 0s H 36 27 63083.000000 62266.4585 1.29% 5.5 0s * 37 27 30 63061.000000 62266.4585 1.26% 5.6 0s * 126 87 39 62916.000000 62296.5683 0.98% 4.8 1s H 410 178 62782.000000 62440.4383 0.54% 5.4 3s * 413 164 15 62746.000000 62440.4383 0.49% 5.4 4s 500 183 cutoff 8 62746.0000 62463.8615 0.45% 5.8 5s H 600 181 62678.000000 62475.7309 0.32% 5.9 6s * 708 167 26 62674.000000 62475.7309 0.32% 7.1 8s 867 115 cutoff 22 62674.0000 62589.6746 0.13% 6.8 10s Cutting planes: Gomory: 2 Cover: 2 Flow cover: 11 Flow path: 1 Explored 927 nodes (6592 simplex iterations) in 10.69 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.267400000000e+04, best bound 6.266900386551e+04, gap 0.0080%