Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:03:23 2013 Optimize a model with 20745 rows, 20295 columns and 81045 nonzeros Presolve removed 1696 rows and 0 columns Presolve time: 0.11s Presolved: 19049 rows, 20295 columns, 77653 nonzeros Variable types: 20250 continuous, 45 integer (45 binary) Root relaxation: objective 4.394292e+04, 3782 iterations, 0.38 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 43942.9177 0 2 - 43942.9177 - - 0s H 0 0 44064.000000 43942.9177 0.27% - 0s 0 0 43943.7342 0 3 44064.0000 43943.7342 0.27% - 0s H 0 0 44032.000000 43943.7342 0.20% - 0s 0 0 44015.9311 0 3 44032.0000 44015.9311 0.04% - 0s 0 0 44018.0702 0 2 44032.0000 44018.0702 0.03% - 1s 0 0 44018.0702 0 2 44032.0000 44018.0702 0.03% - 1s 0 0 44018.6025 0 3 44032.0000 44018.6025 0.03% - 1s 0 0 cutoff 0 44032.0000 44032.0000 0.0% - 1s Cutting planes: Gomory: 1 Explored 0 nodes (4594 simplex iterations) in 1.55 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.403200000000e+04, best bound 4.403200000000e+04, gap 0.0%