Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:07:28 2013 Optimize a model with 1016 rows, 2013 columns and 7025 nonzeros Presolve removed 13 rows and 51 columns Presolve time: 0.06s Presolved: 1003 rows, 1962 columns, 5885 nonzeros Variable types: 1000 continuous, 962 integer (962 binary) Found heuristic solution: objective 3887.5966454 Root relaxation: objective 3.883314e+03, 6 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3883.31425 0 2 3887.59665 3883.31425 0.11% - 0s 0 0 3883.59420 0 2 3887.59665 3883.59420 0.10% - 0s 0 0 3883.87140 0 2 3887.59665 3883.87140 0.10% - 0s 0 0 3884.14594 0 2 3887.59665 3884.14594 0.09% - 0s 0 0 3884.41789 0 2 3887.59665 3884.41789 0.08% - 0s 0 0 3884.68731 0 2 3887.59665 3884.68731 0.07% - 0s 0 0 3884.95427 0 2 3887.59665 3884.95427 0.07% - 0s 0 0 3885.21883 0 2 3887.59665 3885.21883 0.06% - 0s 0 0 3885.48105 0 2 3887.59665 3885.48105 0.05% - 0s 0 0 3885.74099 0 2 3887.59665 3885.74099 0.05% - 0s 0 0 3885.99869 0 2 3887.59665 3885.99869 0.04% - 0s 0 0 3886.25421 0 2 3887.59665 3886.25421 0.03% - 0s 0 0 3886.50759 0 2 3887.59665 3886.50759 0.03% - 0s 0 0 3886.75889 0 2 3887.59665 3886.75889 0.02% - 0s 0 0 3887.00814 0 2 3887.59665 3887.00814 0.02% - 0s 0 0 3887.25540 0 2 3887.59665 3887.25540 0.01% - 0s Explored 0 nodes (80 simplex iterations) in 0.32 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.887596645355e+03, best bound 3.887255395657e+03, gap 0.0088%