Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:54:32 2013 Optimize a model with 352 rows, 10272 columns and 20512 nonzeros Presolve time: 0.01s Presolved: 352 rows, 10272 columns, 20512 nonzeros Variable types: 10240 continuous, 32 integer (32 binary) Root relaxation: objective 4.365925e+04, 817 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 43659.2463 0 4 - 43659.2463 - - 0s H 0 0 44020.000000 43659.2463 0.82% - 0s 0 0 43978.5289 0 2 44020.0000 43978.5289 0.09% - 0s H 0 0 44003.000000 43978.5289 0.06% - 0s 0 0 43983.3333 0 2 44003.0000 43983.3333 0.04% - 0s 0 0 43983.6757 0 1 44003.0000 43983.6757 0.04% - 0s 0 0 43983.6757 0 1 44003.0000 43983.6757 0.04% - 0s Cutting planes: Implied bound: 27 Flow cover: 1 Explored 0 nodes (995 simplex iterations) in 0.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.400300000000e+04, best bound 4.400300000000e+04, gap 0.0%