Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:13:21 2013 Optimize a model with 20140 rows, 21020 columns and 82010 nonzeros Presolve removed 30 rows and 20 columns Presolve time: 0.28s Presolved: 20110 rows, 21000 columns, 61980 nonzeros Variable types: 11010 continuous, 9990 integer (9990 binary) Root relaxation: objective 1.931845e+04, 6697 iterations, 0.31 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 19318.446870 19318.4469 0.0% - 0s Explored 0 nodes (6697 simplex iterations) in 0.69 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.931844686955e+04, best bound 1.931844686955e+04, gap 0.0%