Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:00:36 2013 Optimize a model with 462 rows, 17682 columns and 35322 nonzeros Presolve time: 0.02s Presolved: 462 rows, 17682 columns, 35322 nonzeros Variable types: 17640 continuous, 42 integer (42 binary) Root relaxation: objective 4.460079e+04, 780 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 44600.7903 0 11 - 44600.7903 - - 0s H 0 0 46225.000000 44600.7903 3.51% - 0s 0 0 44903.4619 0 4 46225.0000 44903.4619 2.86% - 0s H 0 0 45665.472727 44903.4619 1.67% - 0s H 0 0 45456.000000 44903.4619 1.22% - 0s H 0 0 45031.000000 44903.4619 0.28% - 0s 0 0 44920.5550 0 4 45031.0000 44920.5550 0.25% - 0s 0 0 44935.0032 0 4 45031.0000 44935.0032 0.21% - 0s 0 0 44936.4239 0 4 45031.0000 44936.4239 0.21% - 0s 0 0 44936.4239 0 4 45031.0000 44936.4239 0.21% - 0s 0 0 44936.4239 0 11 45031.0000 44936.4239 0.21% - 0s 0 0 44936.4239 0 4 45031.0000 44936.4239 0.21% - 0s 0 0 44936.4239 0 4 45031.0000 44936.4239 0.21% - 0s 0 0 44936.4239 0 5 45031.0000 44936.4239 0.21% - 0s 0 0 44936.4239 0 4 45031.0000 44936.4239 0.21% - 0s 0 0 44936.4239 0 4 45031.0000 44936.4239 0.21% - 0s 0 2 44970.9569 0 4 45031.0000 44970.9569 0.13% - 0s * 11 3 8 45015.000000 44988.5037 0.06% 11.7 0s H 13 3 44998.533333 44989.8000 0.02% 13.8 0s * 14 3 3 44993.000000 44990.9438 0.00% 14.3 0s Cutting planes: Implied bound: 86 Flow cover: 6 Explored 15 nodes (2084 simplex iterations) in 0.59 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.499300000000e+04, best bound 4.499094377322e+04, gap 0.0046%