Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:53:59 2013 Optimize a model with 9360 rows, 9060 columns and 36060 nonzeros Presolve removed 30 rows and 0 columns Presolve time: 0.04s Presolved: 9330 rows, 9060 columns, 36030 nonzeros Variable types: 9030 continuous, 30 integer (30 binary) Root relaxation: objective 2.682282e+04, 1241 iterations, 0.10 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 26822.8236 0 23 - 26822.8236 - - 0s H 0 0 30881.000000 26822.8236 13.1% - 0s 0 0 28788.7778 0 2 30881.0000 28788.7778 6.78% - 0s H 0 0 29206.000000 28788.7778 1.43% - 0s H 0 0 28948.000000 28788.7778 0.55% - 0s H 0 0 28792.000000 28788.7778 0.01% - 0s 0 0 cutoff 0 28792.0000 28792.0000 0.0% - 0s Cutting planes: Implied bound: 21 Explored 0 nodes (1637 simplex iterations) in 0.41 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.879200000000e+04, best bound 2.879200000000e+04, gap 0.0%