Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:54:01 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 2.629811e+04, 1342 iterations, 0.14 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 26298.1053 0 24 - 26298.1053 - - 0s H 0 0 29614.000000 26298.1053 11.2% - 0s 0 0 28730.0909 0 1 29614.0000 28730.0909 2.98% - 0s H 0 0 29061.242424 28730.0909 1.14% - 0s H 0 0 28973.000000 28730.0909 0.84% - 0s H 0 0 28773.000000 28730.0909 0.15% - 0s H 0 0 28770.000000 28730.0909 0.14% - 0s 0 0 28770.0000 0 1 28770.0000 28770.0000 0.0% - 0s Cutting planes: Implied bound: 20 Explored 1 nodes (1777 simplex iterations) in 0.57 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.877000000000e+04, best bound 2.877000000000e+04, gap 0.0%