Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:56:32 2013 Optimize a model with 13392 rows, 13032 columns and 51912 nonzeros Presolve removed 36 rows and 0 columns Presolve time: 0.06s Presolved: 13356 rows, 13032 columns, 51876 nonzeros Variable types: 12996 continuous, 36 integer (36 binary) Root relaxation: objective 3.436478e+04, 2221 iterations, 0.34 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 34364.7845 0 30 - 34364.7845 - - 0s H 0 0 41164.000000 34364.7845 16.5% - 0s 0 0 39174.5525 0 4 41164.0000 39174.5525 4.83% - 0s H 0 0 39965.000000 39174.5525 1.98% - 0s H 0 0 39503.000000 39174.5525 0.83% - 0s 0 0 39174.8423 0 2 39503.0000 39174.8423 0.83% - 1s H 0 0 39210.000000 39174.8423 0.09% - 1s 0 0 39184.0968 0 1 39210.0000 39184.0968 0.07% - 1s 0 2 39185.9865 0 1 39210.0000 39185.9865 0.06% - 1s Cutting planes: Implied bound: 30 Explored 3 nodes (3252 simplex iterations) in 1.23 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.921000000000e+04, best bound 3.921000000000e+04, gap 0.0%