Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:20:27 2013 Optimize a model with 605 rows, 30305 columns and 60555 nonzeros Presolve time: 0.04s Presolved: 605 rows, 30305 columns, 60555 nonzeros Variable types: 30250 continuous, 55 integer (55 binary) Root relaxation: objective 5.322287e+04, 989 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 53222.8697 0 4 - 53222.8697 - - 0s H 0 0 54613.000000 53222.8697 2.55% - 0s H 0 0 53654.000000 53222.8697 0.80% - 0s 0 0 53251.3992 0 4 53654.0000 53251.3992 0.75% - 0s 0 0 53264.6192 0 5 53654.0000 53264.6192 0.73% - 0s 0 0 53269.6649 0 4 53654.0000 53269.6649 0.72% - 0s 0 0 53270.3591 0 3 53654.0000 53270.3591 0.72% - 0s 0 0 53270.4903 0 3 53654.0000 53270.4903 0.71% - 0s 0 0 53270.5190 0 3 53654.0000 53270.5190 0.71% - 0s 0 0 53270.7082 0 3 53654.0000 53270.7082 0.71% - 0s 0 0 53270.8387 0 3 53654.0000 53270.8387 0.71% - 0s 0 0 53270.8994 0 3 53654.0000 53270.8994 0.71% - 0s 0 0 53270.9032 0 2 53654.0000 53270.9032 0.71% - 0s 0 0 53270.9270 0 3 53654.0000 53270.9270 0.71% - 0s 0 0 53271.0404 0 2 53654.0000 53271.0404 0.71% - 0s 0 0 53271.0404 0 4 53654.0000 53271.0404 0.71% - 0s 0 0 53271.0404 0 5 53654.0000 53271.0404 0.71% - 0s 0 0 53271.0404 0 3 53654.0000 53271.0404 0.71% - 0s 0 0 53271.0404 0 3 53654.0000 53271.0404 0.71% - 0s 0 0 53271.0404 0 2 53654.0000 53271.0404 0.71% - 1s 0 0 53271.0404 0 2 53654.0000 53271.0404 0.71% - 1s H 0 0 53567.000000 53271.0404 0.55% - 1s 0 2 53273.4076 0 2 53567.0000 53273.4076 0.55% - 1s * 10 4 8 53533.000000 53483.3223 0.09% 42.1 1s Cutting planes: Implied bound: 37 Flow cover: 5 Explored 15 nodes (2643 simplex iterations) in 1.35 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.353300000000e+04, best bound 5.353300000000e+04, gap 0.0%