Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:54:05 2013 Optimize a model with 43030 rows, 42380 columns and 169130 nonzeros Presolve removed 65 rows and 0 columns Presolve time: 0.19s Presolved: 42965 rows, 42380 columns, 169065 nonzeros Variable types: 42315 continuous, 65 integer (65 binary) Root relaxation: objective 5.735036e+04, 5890 iterations, 3.78 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 57350.3575 0 52 - 57350.3575 - - 4s H 0 0 82365.000000 57350.3575 30.4% - 6s 0 0 72221.9655 0 12 82365.0000 72221.9655 12.3% - 9s H 0 0 82124.464293 72221.9655 12.1% - 9s H 0 0 77824.000000 72221.9655 7.20% - 10s 0 0 73107.4575 0 6 77824.0000 73107.4575 6.06% - 10s H 0 0 76926.000000 73107.4575 4.96% - 10s 0 0 73108.5172 0 5 76926.0000 73108.5172 4.96% - 11s H 0 0 76636.000000 73108.5172 4.60% - 11s 0 0 73136.5021 0 4 76636.0000 73136.5021 4.57% - 11s H 0 0 75981.273957 73136.5021 3.74% - 11s H 0 0 74977.000000 73136.5021 2.45% - 11s H 0 0 74622.000000 73136.5021 1.99% - 12s 0 2 73153.8071 0 4 74622.0000 73153.8071 1.97% - 12s H 5 5 73963.862893 73273.1684 0.93% 59.0 12s H 7 7 73924.076923 73273.1684 0.88% 60.7 13s * 11 6 11 73352.000000 73273.1684 0.11% 80.1 13s Cutting planes: Implied bound: 63 Explored 17 nodes (12415 simplex iterations) in 13.61 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.335200000000e+04, best bound 7.335200000000e+04, gap 0.0%