Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:59:44 2013 Optimize a model with 451 rows, 16851 columns and 33661 nonzeros Presolve time: 0.02s Presolved: 451 rows, 16851 columns, 33661 nonzeros Variable types: 16810 continuous, 41 integer (41 binary) Root relaxation: objective 4.111761e+04, 669 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 41117.6107 0 3 - 41117.6107 - - 0s H 0 0 42555.000000 41117.6107 3.38% - 0s 0 0 41147.3985 0 3 42555.0000 41147.3985 3.31% - 0s 0 0 41162.3819 0 3 42555.0000 41162.3819 3.27% - 0s H 0 0 42336.000000 41162.3819 2.77% - 0s 0 0 41162.6629 0 1 42336.0000 41162.6629 2.77% - 0s H 0 0 41612.595506 41162.6629 1.08% - 0s H 0 0 41389.000000 41162.6629 0.55% - 0s 0 0 41162.7753 0 1 41389.0000 41162.7753 0.55% - 0s 0 0 41163.3820 0 1 41389.0000 41163.3820 0.55% - 0s 0 0 41163.9101 0 1 41389.0000 41163.9101 0.54% - 0s H 0 0 41381.000000 41163.9101 0.52% - 0s 0 0 41163.9101 0 3 41381.0000 41163.9101 0.52% - 0s 0 0 41163.9101 0 3 41381.0000 41163.9101 0.52% - 0s 0 0 41163.9101 0 3 41381.0000 41163.9101 0.52% - 0s 0 0 41163.9101 0 1 41381.0000 41163.9101 0.52% - 0s 0 0 41163.9101 0 1 41381.0000 41163.9101 0.52% - 0s 0 0 41163.9101 0 1 41381.0000 41163.9101 0.52% - 0s 0 2 41181.8583 0 1 41381.0000 41181.8583 0.48% - 0s * 7 1 3 41358.000000 41355.0000 0.01% 41.3 0s Cutting planes: Implied bound: 23 Flow cover: 3 Explored 8 nodes (1691 simplex iterations) in 0.50 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.135800000000e+04, best bound 4.135500000000e+04, gap 0.0073%