Gurobi 5.0.1 (linux64) logging started Wed Apr 24 12:29:30 2013 Optimize a model with 1980 rows, 324180 columns and 648180 nonzeros Presolve time: 0.84s Presolved: 1980 rows, 324180 columns, 648180 nonzeros Variable types: 324000 continuous, 180 integer (180 binary) Root relaxation: objective 3.433235e+05, 9613 iterations, 0.97 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 343323.542 0 8 - 343323.542 - - 2s H 0 0 387002.00000 343323.542 11.3% - 3s H 0 0 349609.00000 343323.542 1.80% - 4s 0 0 343769.433 0 7 349609.000 343769.433 1.67% - 5s 0 0 343769.433 0 8 349609.000 343769.433 1.67% - 7s 0 0 343769.433 0 7 349609.000 343769.433 1.67% - 8s 0 0 343830.297 0 6 349609.000 343830.297 1.65% - 9s 0 0 343843.361 0 7 349609.000 343843.361 1.65% - 10s 0 0 343855.266 0 6 349609.000 343855.266 1.65% - 10s 0 0 343862.460 0 6 349609.000 343862.460 1.64% - 11s 0 0 343868.969 0 6 349609.000 343868.969 1.64% - 11s 0 0 343869.000 0 6 349609.000 343869.000 1.64% - 12s 0 0 343869.007 0 6 349609.000 343869.007 1.64% - 13s 0 0 343872.552 0 6 349609.000 343872.552 1.64% - 13s 0 0 343872.564 0 6 349609.000 343872.564 1.64% - 14s 0 0 343872.564 0 6 349609.000 343872.564 1.64% - 14s 0 0 343872.741 0 6 349609.000 343872.741 1.64% - 15s 0 2 343878.591 0 6 349609.000 343878.591 1.64% - 18s 4 6 344214.145 3 5 349609.000 344053.902 1.59% 357 20s H 9 9 345143.00000 344180.331 0.28% 241 21s * 11 11 9 344409.00000 344180.331 0.07% 221 22s Cutting planes: Implied bound: 256 Flow cover: 19 Explored 27 nodes (24868 simplex iterations) in 23.70 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.444090000000e+05, best bound 3.444021048579e+05, gap 0.0020%