Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:53:53 2013 Optimize a model with 9360 rows, 9060 columns and 36060 nonzeros Presolve removed 30 rows and 0 columns Presolve time: 0.05s Presolved: 9330 rows, 9060 columns, 36030 nonzeros Variable types: 9030 continuous, 30 integer (30 binary) Root relaxation: objective 3.097328e+04, 1686 iterations, 0.17 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 30973.2774 0 22 - 30973.2774 - - 0s H 0 0 34509.000000 30973.2774 10.2% - 0s 0 0 34050.9688 0 1 34509.0000 34050.9688 1.33% - 0s H 0 0 34148.000000 34050.9688 0.28% - 0s H 0 0 34052.000000 34050.9688 0.00% - 0s Cutting planes: Implied bound: 21 Explored 0 nodes (2181 simplex iterations) in 0.50 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.405200000000e+04, best bound 3.405096875000e+04, gap 0.0030%