Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:47:15 2013 Optimize a model with 680 rows, 24260 columns and 248680 nonzeros Presolve removed 20 rows and 20 columns Presolve time: 0.44s Presolved: 660 rows, 24240 columns, 228660 nonzeros Variable types: 24040 continuous, 200 integer (200 binary) Root relaxation: objective 3.573401e+04, 491 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 35734.0139 0 9 - 35734.0139 - - 0s 0 0 35734.2701 0 9 - 35734.2701 - - 0s 0 0 35734.2905 0 9 - 35734.2905 - - 1s 0 0 35734.3592 0 9 - 35734.3592 - - 1s 0 0 35734.4171 0 9 - 35734.4171 - - 1s 0 0 35734.4553 0 9 - 35734.4553 - - 1s 0 0 35734.4591 0 9 - 35734.4591 - - 1s 0 0 35734.4591 0 9 - 35734.4591 - - 1s 0 0 35734.4688 0 9 - 35734.4688 - - 1s 0 0 35734.4688 0 9 - 35734.4688 - - 2s 0 0 35734.4688 0 9 - 35734.4688 - - 2s 0 2 35735.0538 0 9 - 35735.0538 - - 5s * 32 16 29 36181.017452 35751.5014 1.19% 10.2 5s H 62 29 36180.037109 35769.7427 1.13% 9.2 5s * 63 29 27 36180.026831 35769.7427 1.13% 9.1 5s * 85 29 16 36179.547500 35805.5904 1.03% 9.8 6s * 120 25 24 36175.618629 36169.4258 0.02% 9.7 6s * 157 18 23 36175.538038 36169.5234 0.02% 8.1 6s * 173 23 20 36174.795049 36169.5234 0.01% 7.7 6s * 174 22 20 36174.782147 36169.5234 0.01% 7.6 6s * 176 19 18 36174.630451 36169.5234 0.01% 7.6 6s Cutting planes: Flow cover: 12 Explored 181 nodes (2329 simplex iterations) in 6.63 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.617463045082e+04, best bound 3.617119449906e+04, gap 0.0095%