Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:55:34 2013 Optimize a model with 11968 rows, 11628 columns and 46308 nonzeros Presolve removed 34 rows and 0 columns Presolve time: 0.05s Presolved: 11934 rows, 11628 columns, 46274 nonzeros Variable types: 11594 continuous, 34 integer (34 binary) Root relaxation: objective 3.188148e+04, 1611 iterations, 0.22 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 31881.4770 0 26 - 31881.4770 - - 0s H 0 0 37403.000000 31881.4770 14.8% - 0s 0 0 35017.5883 0 4 37403.0000 35017.5883 6.38% - 0s H 0 0 36259.890487 35017.5883 3.43% - 0s H 0 0 35364.000000 35017.5883 0.98% - 0s H 0 0 35060.000000 35017.5883 0.12% - 0s 0 0 35022.5974 0 2 35060.0000 35022.5974 0.11% - 0s 0 2 35022.7542 0 2 35060.0000 35022.7542 0.11% - 0s Cutting planes: Gomory: 1 Implied bound: 25 Explored 6 nodes (2489 simplex iterations) in 0.94 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.506000000000e+04, best bound 3.506000000000e+04, gap 0.0%