Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:00:34 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 4.038152e+04, 776 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 40381.5191 0 8 - 40381.5191 - - 0s H 0 0 42156.000000 40381.5191 4.21% - 0s H 0 0 40965.000000 40381.5191 1.42% - 0s 0 0 40813.2218 0 5 40965.0000 40813.2218 0.37% - 0s 0 0 40867.9280 0 4 40965.0000 40867.9280 0.24% - 0s 0 0 40883.2589 0 5 40965.0000 40883.2589 0.20% - 0s 0 0 40883.2747 0 3 40965.0000 40883.2747 0.20% - 0s 0 0 40883.2747 0 3 40965.0000 40883.2747 0.20% - 0s 0 0 40884.2445 0 3 40965.0000 40884.2445 0.20% - 0s 0 0 40885.7579 0 3 40965.0000 40885.7579 0.19% - 0s 0 0 40952.6636 0 2 40965.0000 40952.6636 0.03% - 0s 0 0 40954.2688 0 1 40965.0000 40954.2688 0.03% - 0s 0 0 40957.8235 0 1 40965.0000 40957.8235 0.02% - 0s 0 0 40957.8235 0 2 40965.0000 40957.8235 0.02% - 0s 0 0 40957.8235 0 1 40965.0000 40957.8235 0.02% - 0s * 0 0 0 40959.000000 40959.0000 0.0% - 0s Cutting planes: Implied bound: 14 Flow cover: 1 Explored 0 nodes (1632 simplex iterations) in 0.47 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.095900000000e+04, best bound 4.095900000000e+04, gap 0.0%