Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:01:27 2013 Optimize a model with 473 rows, 18533 columns and 37023 nonzeros Presolve time: 0.02s Presolved: 473 rows, 18533 columns, 37023 nonzeros Variable types: 18490 continuous, 43 integer (43 binary) Root relaxation: objective 4.522780e+04, 818 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 45227.8049 0 8 - 45227.8049 - - 0s H 0 0 47033.000000 45227.8049 3.84% - 0s H 0 0 45871.000000 45227.8049 1.40% - 0s 0 0 45633.4735 0 4 45871.0000 45633.4735 0.52% - 0s 0 0 45649.1474 0 5 45871.0000 45649.1474 0.48% - 0s 0 0 45655.0157 0 3 45871.0000 45655.0157 0.47% - 0s 0 0 45655.8402 0 3 45871.0000 45655.8402 0.47% - 0s H 0 0 45736.000000 45655.8402 0.18% - 0s 0 0 45655.8402 0 8 45736.0000 45655.8402 0.18% - 0s 0 0 45670.6031 0 4 45736.0000 45670.6031 0.14% - 0s 0 0 45681.0126 0 4 45736.0000 45681.0126 0.12% - 0s 0 0 45689.4032 0 4 45736.0000 45689.4032 0.10% - 0s 0 0 45694.1977 0 3 45736.0000 45694.1977 0.09% - 0s 0 0 45694.2922 0 4 45736.0000 45694.2922 0.09% - 0s 0 0 45694.3212 0 4 45736.0000 45694.3212 0.09% - 0s 0 0 45694.3403 0 4 45736.0000 45694.3403 0.09% - 0s 0 0 45694.4538 0 3 45736.0000 45694.4538 0.09% - 0s H 0 0 45715.000000 45694.4538 0.04% - 0s 0 1 45713.0000 0 1 45715.0000 45713.0000 0.00% - 0s Cutting planes: Implied bound: 90 Flow cover: 3 Explored 1 nodes (1861 simplex iterations) in 0.58 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.571500000000e+04, best bound 4.571300000000e+04, gap 0.0044%