Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:16:26 2013 Optimize a model with 320 rows, 4140 columns and 8380 nonzeros Presolve removed 20 rows and 20 columns Presolve time: 0.01s Presolved: 300 rows, 4120 columns, 8300 nonzeros Variable types: 4100 continuous, 20 integer (20 binary) Root relaxation: objective 3.573401e+04, 420 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 35734.0139 0 3 - 35734.0139 - - 0s 0 0 35769.9729 0 3 - 35769.9729 - - 0s 0 0 35789.2538 0 4 - 35789.2538 - - 0s 0 0 35805.2355 0 4 - 35805.2355 - - 0s 0 0 35806.2263 0 4 - 35806.2263 - - 0s 0 0 35806.9905 0 4 - 35806.9905 - - 0s 0 0 35807.2439 0 4 - 35807.2439 - - 0s 0 0 35807.5545 0 4 - 35807.5545 - - 0s 0 0 35807.5545 0 4 - 35807.5545 - - 0s H 0 0 36156.920466 35807.5545 0.97% - 0s 0 1 35834.1637 0 4 36156.9205 35834.1637 0.89% - 0s * 4 3 4 36131.385172 36055.8328 0.21% 48.2 0s Cutting planes: Flow cover: 17 Explored 7 nodes (901 simplex iterations) in 0.12 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.613138517161e+04, best bound 3.613138517161e+04, gap 0.0%