Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:56:54 2013 Optimize a model with 407 rows, 13727 columns and 27417 nonzeros Presolve time: 0.02s Presolved: 407 rows, 13727 columns, 27417 nonzeros Variable types: 13690 continuous, 37 integer (37 binary) Root relaxation: objective 3.663573e+04, 496 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 36635.7315 0 8 - 36635.7315 - - 0s H 0 0 37821.000000 36635.7315 3.13% - 0s H 0 0 36982.000000 36635.7315 0.94% - 0s 0 0 36936.7620 0 4 36982.0000 36936.7620 0.12% - 0s 0 0 36944.0872 0 5 36982.0000 36944.0872 0.10% - 0s 0 0 36946.5461 0 4 36982.0000 36946.5461 0.10% - 0s 0 0 36946.9043 0 3 36982.0000 36946.9043 0.09% - 0s 0 0 36958.4308 0 3 36982.0000 36958.4308 0.06% - 0s 0 0 36965.8953 0 4 36982.0000 36965.8953 0.04% - 0s 0 0 36967.0143 0 3 36982.0000 36967.0143 0.04% - 0s 0 0 36967.1308 0 2 36982.0000 36967.1308 0.04% - 0s H 0 0 36975.000000 36967.1308 0.02% - 0s 0 0 36967.1308 0 6 36975.0000 36967.1308 0.02% - 0s 0 0 36967.1308 0 2 36975.0000 36967.1308 0.02% - 0s 0 0 36968.5308 0 2 36975.0000 36968.5308 0.02% - 0s 0 0 36971.3000 0 1 36975.0000 36971.3000 0.01% - 0s 0 2 36972.0000 0 1 36975.0000 36972.0000 0.01% - 0s Cutting planes: Implied bound: 13 Flow cover: 1 Explored 1 nodes (1033 simplex iterations) in 0.33 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.697500000000e+04, best bound 3.697200000000e+04, gap 0.0081%