Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:40:34 2013 Optimize a model with 1140 rows, 2020 columns and 6010 nonzeros Presolve removed 30 rows and 20 columns Presolve time: 0.04s Presolved: 1110 rows, 2000 columns, 4980 nonzeros Variable types: 1510 continuous, 490 integer (490 binary) Root relaxation: objective 1.791602e+04, 470 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 17916.0191 0 3 - 17916.0191 - - 0s 0 0 17963.3800 0 4 - 17963.3800 - - 0s 0 0 17964.2613 0 5 - 17964.2613 - - 0s 0 0 17979.0395 0 4 - 17979.0395 - - 0s 0 0 17979.2349 0 5 - 17979.2349 - - 0s 0 0 17979.2643 0 5 - 17979.2643 - - 0s H 0 0 17987.076412 17979.2643 0.04% - 0s 0 0 17979.2643 0 2 17987.0764 17979.2643 0.04% - 0s 0 0 17979.2643 0 4 17987.0764 17979.2643 0.04% - 0s 0 0 17979.2643 0 4 17987.0764 17979.2643 0.04% - 0s 0 0 17980.0700 0 5 17987.0764 17980.0700 0.04% - 0s 0 0 17980.2561 0 4 17987.0764 17980.2561 0.04% - 0s 0 0 17980.3611 0 4 17987.0764 17980.3611 0.04% - 0s 0 0 17980.4686 0 4 17987.0764 17980.4686 0.04% - 0s H 0 0 17985.766233 17980.4686 0.03% - 0s H 0 0 17985.100199 17980.4686 0.03% - 0s 0 2 17980.6468 0 4 17985.1002 17980.6468 0.02% - 0s * 7 5 6 17984.200283 17981.5396 0.01% 2.9 0s Cutting planes: Gomory: 1 Flow cover: 3 Explored 12 nodes (730 simplex iterations) in 0.18 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.798420028333e+04, best bound 1.798356710302e+04, gap 0.0035%