Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:00:39 2013 Optimize a model with 18144 rows, 17724 columns and 70644 nonzeros Presolve removed 42 rows and 0 columns Presolve time: 0.08s Presolved: 18102 rows, 17724 columns, 70602 nonzeros Variable types: 17682 continuous, 42 integer (42 binary) Root relaxation: objective 3.638393e+04, 2121 iterations, 0.38 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 36383.9305 0 32 - 36383.9305 - - 0s H 0 0 45186.000000 36383.9305 19.5% - 0s 0 0 42191.6684 0 3 45186.0000 42191.6684 6.63% - 1s H 0 0 42651.769194 42191.6684 1.08% - 1s H 0 0 42328.000000 42191.6684 0.32% - 1s H 0 0 42239.000000 42191.6684 0.11% - 1s 0 0 42199.4203 0 2 42239.0000 42199.4203 0.09% - 1s 0 0 cutoff 0 42239.0000 42239.0000 0.0% - 1s Cutting planes: Gomory: 1 Implied bound: 32 Explored 0 nodes (3376 simplex iterations) in 1.48 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.223900000000e+04, best bound 4.223900000000e+04, gap 0.0%