Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:55:57 2013 Optimize a model with 12670 rows, 12320 columns and 49070 nonzeros Presolve removed 35 rows and 0 columns Presolve time: 0.05s Presolved: 12635 rows, 12320 columns, 49035 nonzeros Variable types: 12285 continuous, 35 integer (35 binary) Root relaxation: objective 3.652123e+04, 2272 iterations, 0.49 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 36521.2288 0 32 - 36521.2288 - - 0s H 0 0 43804.000000 36521.2288 16.6% - 0s 0 0 40854.3333 0 1 43804.0000 40854.3333 6.73% - 1s H 0 0 41067.666667 40854.3333 0.52% - 1s H 0 0 40882.000000 40854.3333 0.07% - 1s 0 0 40872.2632 0 1 40882.0000 40872.2632 0.02% - 1s 0 0 40881.1139 0 1 40882.0000 40881.1139 0.00% - 1s Cutting planes: Gomory: 1 Implied bound: 33 Explored 0 nodes (3279 simplex iterations) in 1.30 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.088200000000e+04, best bound 4.088111392405e+04, gap 0.0022%