Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:18:26 2013 Optimize a model with 594 rows, 29214 columns and 58374 nonzeros Presolve time: 0.04s Presolved: 594 rows, 29214 columns, 58374 nonzeros Variable types: 29160 continuous, 54 integer (54 binary) Root relaxation: objective 5.363737e+04, 1154 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 53637.3671 0 8 - 53637.3671 - - 0s H 0 0 57559.000000 53637.3671 6.81% - 0s H 0 0 56427.000000 53637.3671 4.94% - 0s 0 0 53997.6317 0 4 56427.0000 53997.6317 4.31% - 0s H 0 0 56286.038199 53997.6317 4.07% - 0s H 0 0 55510.000000 53997.6317 2.72% - 0s 0 0 54008.0633 0 3 55510.0000 54008.0633 2.71% - 0s H 0 0 55414.227028 54008.0633 2.54% - 0s H 0 0 55205.000000 54008.0633 2.17% - 0s 0 0 54010.3115 0 4 55205.0000 54010.3115 2.16% - 0s H 0 0 55115.000000 54010.3115 2.00% - 0s 0 0 54018.5726 0 4 55115.0000 54018.5726 1.99% - 0s 0 0 54018.8075 0 5 55115.0000 54018.8075 1.99% - 0s H 0 0 55107.000000 54018.8075 1.97% - 0s 0 0 54018.8826 0 4 55107.0000 54018.8826 1.97% - 0s 0 0 54019.0573 0 4 55107.0000 54019.0573 1.97% - 0s 0 2 54040.4499 0 4 55107.0000 54040.4499 1.94% - 0s H 4 4 54591.000000 54235.2619 0.65% 59.5 0s H 6 3 54268.478261 54235.4638 0.06% 50.2 0s * 9 1 8 54261.000000 54251.3333 0.02% 41.2 0s Cutting planes: Implied bound: 72 Flow cover: 3 Explored 13 nodes (1803 simplex iterations) in 0.90 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.426100000000e+04, best bound 5.426100000000e+04, gap 0.0%