Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:53:33 2013 Optimize a model with 319 rows, 8439 columns and 16849 nonzeros Presolve time: 0.01s Presolved: 319 rows, 8439 columns, 16849 nonzeros Variable types: 8410 continuous, 29 integer (29 binary) Root relaxation: objective 2.880763e+04, 451 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 28807.6296 0 5 - 28807.6296 - - 0s H 0 0 29417.000000 28807.6296 2.07% - 0s 0 0 29124.7910 0 3 29417.0000 29124.7910 0.99% - 0s 0 0 29143.6746 0 4 29417.0000 29143.6746 0.93% - 0s H 0 0 29321.000000 29143.6746 0.60% - 0s 0 0 29154.3157 0 5 29321.0000 29154.3157 0.57% - 0s H 0 0 29296.000000 29154.3157 0.48% - 0s 0 0 29157.1961 0 4 29296.0000 29157.1961 0.47% - 0s 0 0 29157.2932 0 4 29296.0000 29157.2932 0.47% - 0s 0 0 29157.5675 0 4 29296.0000 29157.5675 0.47% - 0s 0 0 29162.9732 0 3 29296.0000 29162.9732 0.45% - 0s 0 0 29162.9732 0 4 29296.0000 29162.9732 0.45% - 0s H 0 0 29175.000000 29162.9732 0.04% - 0s 0 0 29162.9732 0 3 29175.0000 29162.9732 0.04% - 0s 0 0 29162.9732 0 3 29175.0000 29162.9732 0.04% - 0s 0 0 29162.9732 0 3 29175.0000 29162.9732 0.04% - 0s 0 0 29163.1875 0 3 29175.0000 29163.1875 0.04% - 0s 0 0 29163.2254 0 3 29175.0000 29163.2254 0.04% - 0s 0 0 29172.5000 0 1 29175.0000 29172.5000 0.01% - 0s Cutting planes: Implied bound: 20 Flow cover: 4 Explored 0 nodes (1075 simplex iterations) in 0.24 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.917500000000e+04, best bound 2.917250000000e+04, gap 0.0086%