Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:19:38 2013 Optimize a model with 29808 rows, 29268 columns and 116748 nonzeros Presolve removed 54 rows and 0 columns Presolve time: 0.13s Presolved: 29754 rows, 29268 columns, 116694 nonzeros Variable types: 29214 continuous, 54 integer (54 binary) Root relaxation: objective 4.501745e+04, 3046 iterations, 1.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 45017.4525 0 42 - 45017.4525 - - 1s H 0 0 63113.000000 45017.4525 28.7% - 1s 0 0 53917.0746 0 9 63113.0000 53917.0746 14.6% - 3s H 0 0 58979.760653 53917.0746 8.58% - 3s H 0 0 56388.000000 53917.0746 4.38% - 3s H 0 0 56018.000000 53917.0746 3.75% - 3s 0 0 54086.1791 0 5 56018.0000 54086.1791 3.45% - 3s H 0 0 55765.000000 54086.1791 3.01% - 3s 0 0 54086.7879 0 1 55765.0000 54086.7879 3.01% - 3s H 0 0 54562.363636 54086.7879 0.87% - 3s H 0 0 54484.000000 54086.7879 0.73% - 3s H 0 0 54438.000000 54086.7879 0.65% - 4s 0 2 54087.9718 0 1 54438.0000 54087.9718 0.64% - 4s H 4 4 54371.819277 54352.6867 0.04% 149 4s * 5 1 4 54353.000000 54353.0000 0.0% 131 4s Cutting planes: Gomory: 2 Implied bound: 45 Explored 6 nodes (5841 simplex iterations) in 4.78 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.435300000000e+04, best bound 5.435300000000e+04, gap 0.0%