Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:19 2013 Optimize a model with 340 rows, 1620 columns and 3610 nonzeros Presolve removed 20 rows and 30 columns Presolve time: 0.01s Presolved: 320 rows, 1590 columns, 3180 nonzeros Variable types: 1400 continuous, 190 integer (190 binary) Root relaxation: objective 2.207062e+04, 155 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 22070.6191 0 1 - 22070.6191 - - 0s 0 0 22084.8411 0 2 - 22084.8411 - - 0s 0 0 22087.9100 0 2 - 22087.9100 - - 0s 0 0 22087.9100 0 2 - 22087.9100 - - 0s 0 0 22087.9100 0 2 - 22087.9100 - - 0s 0 0 22088.2677 0 2 - 22088.2677 - - 0s 0 0 22088.6381 0 2 - 22088.6381 - - 0s 0 0 22088.7519 0 2 - 22088.7519 - - 0s 0 0 22088.7764 0 2 - 22088.7764 - - 0s 0 0 22088.7979 0 2 - 22088.7979 - - 0s 0 0 22088.7979 0 2 - 22088.7979 - - 0s 0 2 22099.4394 0 2 - 22099.4394 - - 0s * 28 24 27 22772.258980 22250.5858 2.29% 4.6 0s * 35 13 5 22377.541060 22262.7940 0.51% 4.8 0s * 41 11 5 22372.936866 22275.9274 0.43% 4.8 0s * 47 9 6 22369.054386 22289.8897 0.35% 4.5 0s * 51 8 6 22363.439602 22302.5691 0.27% 4.4 0s * 55 7 7 22356.298993 22304.2718 0.23% 4.2 0s * 78 4 7 22347.189013 22323.5332 0.11% 3.8 0s * 81 1 8 22336.209791 22331.4786 0.02% 3.8 0s * 83 0 9 22332.970758 22332.9708 0.0% 3.9 0s Cutting planes: Gomory: 1 Flow cover: 10 Explored 84 nodes (557 simplex iterations) in 0.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.233297075756e+04, best bound 2.233297075756e+04, gap 0.0%