Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:59:37 2013 Optimize a model with 451 rows, 16851 columns and 33661 nonzeros Presolve time: 0.02s Presolved: 451 rows, 16851 columns, 33661 nonzeros Variable types: 16810 continuous, 41 integer (41 binary) Root relaxation: objective 3.635894e+04, 489 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 36358.9365 0 9 - 36358.9365 - - 0s H 0 0 37684.000000 36358.9365 3.52% - 0s H 0 0 36866.000000 36358.9365 1.38% - 0s 0 0 36768.6887 0 5 36866.0000 36768.6887 0.26% - 0s 0 0 36808.0845 0 5 36866.0000 36808.0845 0.16% - 0s 0 0 36812.9311 0 4 36866.0000 36812.9311 0.14% - 0s 0 0 36813.3637 0 4 36866.0000 36813.3637 0.14% - 0s 0 0 36813.4567 0 3 36866.0000 36813.4567 0.14% - 0s 0 0 36813.6428 0 2 36866.0000 36813.6428 0.14% - 0s 0 0 36813.6428 0 2 36866.0000 36813.6428 0.14% - 0s 0 0 36813.6428 0 9 36866.0000 36813.6428 0.14% - 0s 0 0 36813.6428 0 5 36866.0000 36813.6428 0.14% - 0s 0 0 36813.6428 0 5 36866.0000 36813.6428 0.14% - 0s 0 0 36813.6428 0 4 36866.0000 36813.6428 0.14% - 0s 0 0 36813.6428 0 3 36866.0000 36813.6428 0.14% - 0s 0 0 36813.6428 0 2 36866.0000 36813.6428 0.14% - 0s 0 2 36814.3460 0 2 36866.0000 36814.3460 0.14% - 0s Cutting planes: Implied bound: 67 Flow cover: 5 Explored 8 nodes (1522 simplex iterations) in 0.56 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.686600000000e+04, best bound 3.686600000000e+04, gap 0.0%