Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:10:18 2013 Optimize a model with 2000 rows, 101100 columns and 203800 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.42s Presolved: 1900 rows, 101000 columns, 203200 nonzeros Variable types: 100700 continuous, 300 integer (300 binary) Root relaxation: objective 9.188392e+05, 6284 iterations, 0.68 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 918839.221 0 8 - 918839.221 - - 1s H 0 0 1008922.4953 918839.221 8.93% - 1s H 0 0 964242.10084 918839.221 4.71% - 1s 0 0 918947.227 0 8 964242.101 918947.227 4.70% - 2s 0 0 918995.011 0 6 964242.101 918995.011 4.69% - 2s 0 0 919001.683 0 4 964242.101 919001.683 4.69% - 2s H 0 0 926823.02818 919001.683 0.84% - 3s 0 0 919001.683 0 4 926823.028 919001.683 0.84% - 3s 0 0 919001.683 0 4 926823.028 919001.683 0.84% - 4s 0 0 919002.488 0 4 926823.028 919002.488 0.84% - 4s 0 0 919002.488 0 4 926823.028 919002.488 0.84% - 5s 0 2 919004.117 0 4 926823.028 919004.117 0.84% - 6s 16 16 919381.624 14 2 926823.028 919070.257 0.84% 97.1 10s H 27 9 919655.74906 919070.257 0.06% 58.6 11s * 77 6 8 919365.22666 919284.268 0.01% 37.0 14s Cutting planes: Flow cover: 17 Explored 78 nodes (10480 simplex iterations) in 14.01 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%