Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:00:02 2013 Optimize a model with 2000 rows, 102100 columns and 206700 nonzeros Presolve removed 100 rows and 700 columns Presolve time: 0.51s Presolved: 1900 rows, 101400 columns, 205700 nonzeros Variable types: 101100 continuous, 300 integer (300 binary) Root relaxation: objective 9.188392e+05, 6009 iterations, 0.84 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 918839.221 0 4 - 918839.221 - - 1s H 0 0 1008922.4953 918839.221 8.93% - 1s 0 0 918947.297 0 4 1008922.50 918947.297 8.92% - 2s 0 0 918994.637 0 3 1008922.50 918994.637 8.91% - 3s 0 0 918999.201 0 3 1008922.50 918999.201 8.91% - 3s 0 0 919001.218 0 2 1008922.50 919001.218 8.91% - 4s 0 0 919001.218 0 2 1008922.50 919001.218 8.91% - 4s 0 0 919002.280 0 2 1008922.50 919002.280 8.91% - 5s 0 0 919002.408 0 2 1008922.50 919002.408 8.91% - 5s 0 0 919003.019 0 2 1008922.50 919003.019 8.91% - 6s 0 0 919003.130 0 2 1008922.50 919003.130 8.91% - 6s 0 0 919003.190 0 2 1008922.50 919003.190 8.91% - 7s 0 0 919003.190 0 2 1008922.50 919003.190 8.91% - 7s 0 2 919009.248 0 2 1008922.50 919009.248 8.91% - 8s 3 5 919070.538 3 1 1008922.50 919063.008 8.91% 195 10s H 27 5 919655.74906 919063.008 0.06% 52.7 14s 53 11 919531.290 52 1 919655.749 919063.008 0.06% 28.0 15s * 70 4 8 919365.22666 919080.614 0.03% 27.6 16s Cutting planes: Flow cover: 20 Explored 84 nodes (10862 simplex iterations) in 18.47 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.193652266644e+05, best bound 9.192842681540e+05, gap 0.0088%