Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:07:35 2013 Optimize a model with 528 rows, 23088 columns and 46128 nonzeros Presolve time: 0.03s Presolved: 528 rows, 23088 columns, 46128 nonzeros Variable types: 23040 continuous, 48 integer (48 binary) Root relaxation: objective 4.620034e+04, 696 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 46200.3447 0 11 - 46200.3447 - - 0s H 0 0 50822.000000 46200.3447 9.09% - 0s H 0 0 50684.000000 46200.3447 8.85% - 0s H 0 0 47096.000000 46200.3447 1.90% - 0s 0 0 46992.5580 0 5 47096.0000 46992.5580 0.22% - 0s 0 0 47041.0734 0 5 47096.0000 47041.0734 0.12% - 0s 0 0 47049.3031 0 3 47096.0000 47049.3031 0.10% - 0s 0 0 47049.3031 0 11 47096.0000 47049.3031 0.10% - 0s 0 0 47049.3031 0 5 47096.0000 47049.3031 0.10% - 0s 0 0 47049.3031 0 5 47096.0000 47049.3031 0.10% - 0s 0 0 47049.3031 0 5 47096.0000 47049.3031 0.10% - 0s 0 0 47050.2237 0 2 47096.0000 47050.2237 0.10% - 0s 0 0 47050.2237 0 2 47096.0000 47050.2237 0.10% - 0s 0 0 47050.2237 0 2 47096.0000 47050.2237 0.10% - 0s 0 0 47093.0000 0 1 47096.0000 47093.0000 0.01% - 0s Cutting planes: Implied bound: 80 Flow cover: 1 Explored 0 nodes (2001 simplex iterations) in 0.54 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.709600000000e+04, best bound 4.709300000000e+04, gap 0.0064%