Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:53:19 2013 Optimize a model with 8176 rows, 7896 columns and 31416 nonzeros Presolve removed 28 rows and 0 columns Presolve time: 0.04s Presolved: 8148 rows, 7896 columns, 31388 nonzeros Variable types: 7868 continuous, 28 integer (28 binary) Root relaxation: objective 2.863761e+04, 1021 iterations, 0.10 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 28637.6143 0 19 - 28637.6143 - - 0s H 0 0 31266.000000 28637.6143 8.41% - 0s * 0 0 0 30000.000000 30000.0000 0.0% - 0s Cutting planes: Gomory: 14 Implied bound: 19 Explored 0 nodes (1400 simplex iterations) in 0.38 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+04, best bound 3.000000000000e+04, gap 0.0%