Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:34:18 2013 Optimize a model with 2400 rows, 102800 columns and 215900 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.25s Presolved: 2300 rows, 102700 columns, 213800 nonzeros Variable types: 102200 continuous, 500 integer (500 binary) Root relaxation: objective 9.188392e+05, 6936 iterations, 0.43 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 918839.221 0 12 - 918839.221 - - 0s 0 0 918950.838 0 12 - 918950.838 - - 1s 0 0 918987.146 0 9 - 918987.146 - - 1s 0 0 918995.506 0 11 - 918995.506 - - 1s 0 0 918996.386 0 6 - 918996.386 - - 2s 0 0 918996.386 0 6 - 918996.386 - - 2s 0 0 918998.006 0 6 - 918998.006 - - 2s 0 0 918998.006 0 6 - 918998.006 - - 3s 0 0 918998.737 0 6 - 918998.737 - - 3s 0 0 918998.737 0 6 - 918998.737 - - 3s 0 0 918998.737 0 6 - 918998.737 - - 4s H 0 0 930751.20951 918998.737 1.26% - 4s 0 2 919005.415 0 6 930751.210 919005.415 1.26% - 5s 23 23 919411.016 21 3 930751.210 919054.641 1.26% 76.2 10s H 27 11 920345.68263 919054.641 0.14% 65.5 10s 108 29 919252.431 8 3 920345.683 919068.051 0.14% 22.4 15s * 130 13 30 919371.65559 919068.051 0.03% 19.8 17s Cutting planes: Flow cover: 20 Explored 149 nodes (12550 simplex iterations) in 17.68 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.193716555880e+05, best bound 9.192842681540e+05, gap 0.0095%