Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:16:13 2013 Optimize a model with 583 rows, 28143 columns and 56233 nonzeros Presolve time: 0.04s Presolved: 583 rows, 28143 columns, 56233 nonzeros Variable types: 28090 continuous, 53 integer (53 binary) Root relaxation: objective 5.446913e+04, 1079 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 54469.1306 0 8 - 54469.1306 - - 0s H 0 0 57866.000000 54469.1306 5.87% - 0s H 0 0 55365.000000 54469.1306 1.62% - 0s 0 0 55118.1213 0 4 55365.0000 55118.1213 0.45% - 0s 0 0 55130.8334 0 4 55365.0000 55130.8334 0.42% - 0s 0 0 55132.8729 0 4 55365.0000 55132.8729 0.42% - 0s 0 0 55137.7001 0 4 55365.0000 55137.7001 0.41% - 0s 0 0 55138.4911 0 3 55365.0000 55138.4911 0.41% - 0s 0 0 55138.4911 0 3 55365.0000 55138.4911 0.41% - 0s 0 0 55138.8290 0 4 55365.0000 55138.8290 0.41% - 0s 0 0 55139.9400 0 4 55365.0000 55139.9400 0.41% - 0s H 0 0 55247.000000 55139.9400 0.19% - 0s 0 0 55139.9400 0 5 55247.0000 55139.9400 0.19% - 0s 0 0 55206.4464 0 2 55247.0000 55206.4464 0.07% - 0s 0 0 55212.5764 0 2 55247.0000 55212.5764 0.06% - 0s 0 0 55213.6431 0 2 55247.0000 55213.6431 0.06% - 0s 0 0 55213.9098 0 2 55247.0000 55213.9098 0.06% - 0s 0 0 55213.9098 0 2 55247.0000 55213.9098 0.06% - 0s 0 0 55214.4443 0 2 55247.0000 55214.4443 0.06% - 0s 0 0 55214.9615 0 2 55247.0000 55214.9615 0.06% - 0s 0 0 55214.9615 0 2 55247.0000 55214.9615 0.06% - 0s 0 0 55214.9615 0 2 55247.0000 55214.9615 0.06% - 0s 0 0 55214.9615 0 2 55247.0000 55214.9615 0.06% - 0s 0 0 55215.2805 0 2 55247.0000 55215.2805 0.06% - 0s 0 0 55215.2805 0 2 55247.0000 55215.2805 0.06% - 0s 0 0 55215.2805 0 2 55247.0000 55215.2805 0.06% - 1s 0 0 55215.3556 0 1 55247.0000 55215.3556 0.06% - 1s 0 0 55245.5000 0 1 55247.0000 55245.5000 0.00% - 1s Cutting planes: Implied bound: 32 Flow cover: 5 Explored 0 nodes (2377 simplex iterations) in 1.09 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.524700000000e+04, best bound 5.524550000000e+04, gap 0.0027%