Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:02:26 2013 Optimize a model with 484 rows, 19404 columns and 38764 nonzeros Presolve time: 0.03s Presolved: 484 rows, 19404 columns, 38764 nonzeros Variable types: 19360 continuous, 44 integer (44 binary) Root relaxation: objective 4.355569e+04, 837 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 43555.6928 0 7 - 43555.6928 - - 0s H 0 0 44893.000000 43555.6928 2.98% - 0s H 0 0 44011.000000 43555.6928 1.03% - 0s 0 0 43755.0029 0 5 44011.0000 43755.0029 0.58% - 0s 0 0 43774.9440 0 4 44011.0000 43774.9440 0.54% - 0s 0 0 43776.7955 0 4 44011.0000 43776.7955 0.53% - 0s 0 0 43776.8983 0 4 44011.0000 43776.8983 0.53% - 0s 0 0 43777.1711 0 4 44011.0000 43777.1711 0.53% - 0s 0 0 43784.5141 0 4 44011.0000 43784.5141 0.51% - 0s H 0 0 43906.000000 43784.5141 0.28% - 0s 0 0 43784.5141 0 9 43906.0000 43784.5141 0.28% - 0s H 0 0 43838.000000 43784.5141 0.12% - 0s 0 0 43808.3333 0 2 43838.0000 43808.3333 0.07% - 0s 0 0 43813.2845 0 2 43838.0000 43813.2845 0.06% - 0s 0 0 43813.2857 0 1 43838.0000 43813.2857 0.06% - 0s 0 0 43825.5754 0 2 43838.0000 43825.5754 0.03% - 0s 0 0 43827.8462 0 1 43838.0000 43827.8462 0.02% - 0s H 0 0 43834.000000 43827.8462 0.01% - 0s H 0 0 43828.000000 43827.8462 0.00% - 0s Cutting planes: Implied bound: 27 Flow cover: 1 Explored 0 nodes (1764 simplex iterations) in 0.56 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.382800000000e+04, best bound 4.382784615385e+04, gap 0.0004%