Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:49:27 2013 Optimize a model with 41728 rows, 41088 columns and 163968 nonzeros Presolve removed 64 rows and 0 columns Presolve time: 0.18s Presolved: 41664 rows, 41088 columns, 163904 nonzeros Variable types: 41024 continuous, 64 integer (64 binary) Root relaxation: objective 5.962123e+04, 6869 iterations, 4.13 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 59621.2299 0 53 - 59621.2299 - - 4s H 0 0 100553.00000 59621.2299 40.7% - 6s 0 0 78308.7128 0 8 100553.000 78308.7128 22.1% - 11s H 0 0 87157.752981 78308.7128 10.2% - 11s H 0 0 83555.000000 78308.7128 6.28% - 11s 0 0 80366.8685 0 2 83555.0000 80366.8685 3.82% - 12s H 0 0 82281.444840 80366.8685 2.33% - 12s H 0 0 81736.000000 80366.8685 1.68% - 12s 0 0 80472.4913 0 2 81736.0000 80472.4913 1.55% - 12s H 0 0 81318.459459 80472.4913 1.04% - 12s H 0 0 81034.000000 80472.4913 0.69% - 12s H 0 0 80917.000000 80472.4913 0.55% - 13s 0 2 80494.3075 0 2 80917.0000 80494.3075 0.52% - 13s H 3 2 80870.625000 80557.3750 0.39% 129 13s H 5 3 80746.675676 80557.6495 0.23% 97.6 13s H 11 5 80654.000000 80568.5126 0.11% 69.6 14s * 22 3 5 80598.000000 80575.2000 0.03% 66.8 14s * 23 0 4 80576.000000 80576.0000 0.0% 64.8 14s Cutting planes: Implied bound: 61 Explored 24 nodes (14704 simplex iterations) in 14.91 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.057600000000e+04, best bound 8.057600000000e+04, gap 0.0%