Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:52:01 2013 Optimize a model with 4662 rows, 4452 columns and 17682 nonzeros Presolve removed 21 rows and 0 columns Presolve time: 0.02s Presolved: 4641 rows, 4452 columns, 17661 nonzeros Variable types: 4431 continuous, 21 integer (21 binary) Root relaxation: objective 1.732106e+04, 512 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 17321.0559 0 13 - 17321.0559 - - 0s H 0 0 18166.000000 17321.0559 4.65% - 0s 0 0 17998.2745 0 4 18166.0000 17998.2745 0.92% - 0s H 0 0 18047.000000 17998.2745 0.27% - 0s 0 0 17998.2745 0 4 18047.0000 17998.2745 0.27% - 0s 0 2 18007.1875 0 4 18047.0000 18007.1875 0.22% - 0s * 4 2 4 18016.000000 18016.0000 0.0% 10.8 0s Cutting planes: Implied bound: 11 Explored 5 nodes (718 simplex iterations) in 0.19 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.801600000000e+04, best bound 1.801600000000e+04, gap 0.0%