Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:00:35 2013 Optimize a model with 462 rows, 17682 columns and 35322 nonzeros Presolve time: 0.03s Presolved: 462 rows, 17682 columns, 35322 nonzeros Variable types: 17640 continuous, 42 integer (42 binary) Root relaxation: objective 4.007121e+04, 643 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 40071.2076 0 7 - 40071.2076 - - 0s H 0 0 40520.000000 40071.2076 1.11% - 0s H 0 0 40369.000000 40071.2076 0.74% - 0s 0 0 40234.3705 0 2 40369.0000 40234.3705 0.33% - 0s 0 0 40249.7875 0 3 40369.0000 40249.7875 0.30% - 0s 0 0 40249.7875 0 7 40369.0000 40249.7875 0.30% - 0s 0 0 40249.7875 0 2 40369.0000 40249.7875 0.30% - 0s 0 0 40249.7875 0 3 40369.0000 40249.7875 0.30% - 0s 0 0 40255.0252 0 3 40369.0000 40255.0252 0.28% - 0s 0 0 40255.3137 0 3 40369.0000 40255.3137 0.28% - 0s 0 0 40255.5101 0 3 40369.0000 40255.5101 0.28% - 0s 0 0 40256.0387 0 3 40369.0000 40256.0387 0.28% - 0s 0 0 40259.3333 0 2 40369.0000 40259.3333 0.27% - 0s 0 0 40263.7313 0 2 40369.0000 40263.7313 0.26% - 0s 0 0 40347.0825 0 4 40369.0000 40347.0825 0.05% - 0s 0 0 40348.9315 0 3 40369.0000 40348.9315 0.05% - 0s 0 0 40350.4390 0 2 40369.0000 40350.4390 0.05% - 0s 0 2 40353.0000 0 2 40369.0000 40353.0000 0.04% - 0s Cutting planes: Implied bound: 50 Flow cover: 2 Explored 3 nodes (1605 simplex iterations) in 0.49 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.036900000000e+04, best bound 4.036900000000e+04, gap 0.0%