Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:16:29 2013 Optimize a model with 360 rows, 4140 columns and 8380 nonzeros Presolve removed 60 rows and 40 columns Presolve time: 0.01s Presolved: 300 rows, 4100 columns, 8220 nonzeros Variable types: 4080 continuous, 20 integer (20 binary) Root relaxation: objective 3.860476e+04, 427 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 38604.7615 0 3 - 38604.7615 - - 0s 0 0 38707.2876 0 3 - 38707.2876 - - 0s 0 0 38730.0202 0 3 - 38730.0202 - - 0s 0 0 38747.8626 0 3 - 38747.8626 - - 0s 0 0 38751.3149 0 3 - 38751.3149 - - 0s 0 0 38754.9285 0 3 - 38754.9285 - - 0s 0 0 38758.3168 0 3 - 38758.3168 - - 0s 0 0 38762.1638 0 3 - 38762.1638 - - 0s 0 0 38763.0917 0 3 - 38763.0917 - - 0s 0 0 38763.5720 0 3 - 38763.5720 - - 0s 0 0 38765.8906 0 3 - 38765.8906 - - 0s 0 0 38768.1439 0 3 - 38768.1439 - - 0s 0 0 38768.4155 0 3 - 38768.4155 - - 0s 0 0 38769.0126 0 3 - 38769.0126 - - 0s 0 0 38769.2014 0 3 - 38769.2014 - - 0s 0 0 38769.6286 0 3 - 38769.6286 - - 0s 0 0 38770.3374 0 3 - 38770.3374 - - 0s 0 0 38771.0185 0 3 - 38771.0185 - - 0s 0 0 38771.3851 0 3 - 38771.3851 - - 0s 0 0 38771.5146 0 3 - 38771.5146 - - 0s 0 0 38771.9280 0 3 - 38771.9280 - - 0s 0 0 38772.1798 0 3 - 38772.1798 - - 0s 0 0 38772.7602 0 3 - 38772.7602 - - 0s 0 0 38772.9177 0 3 - 38772.9177 - - 0s 0 0 38772.9374 0 3 - 38772.9374 - - 0s 0 0 38773.0857 0 3 - 38773.0857 - - 0s 0 0 38773.0857 0 3 - 38773.0857 - - 0s H 0 0 39452.594278 38773.0857 1.72% - 0s 0 2 38774.7476 0 3 39452.5943 38774.7476 1.72% - 0s * 6 4 5 38852.147852 38818.1585 0.09% 33.2 0s Cutting planes: Flow cover: 27 Explored 9 nodes (1136 simplex iterations) in 0.22 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.885214785166e+04, best bound 3.885119918711e+04, gap 0.0024%