Gurobi 5.0.1 (linux64) logging started Wed Dec 19 14:13:01 2012 Optimize a model with 1762 rows, 1681 columns and 10155 nonzeros Presolve removed 649 rows and 883 columns Presolve time: 0.05s Presolved: 1113 rows, 798 columns, 13921 nonzeros Variable types: 39 continuous, 759 integer (759 binary) Root relaxation: objective 4.237144e+02, 221 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 423.71443 0 76 - 423.71443 - - 0s 0 0 431.39925 0 46 - 431.39925 - - 0s 0 0 432.70697 0 52 - 432.70697 - - 0s 0 0 433.71658 0 52 - 433.71658 - - 0s 0 0 434.14630 0 41 - 434.14630 - - 0s 0 0 434.14630 0 49 - 434.14630 - - 0s 0 0 434.14630 0 42 - 434.14630 - - 0s 0 0 434.14630 0 46 - 434.14630 - - 0s 0 0 434.28915 0 51 - 434.28915 - - 0s 0 0 434.28915 0 53 - 434.28915 - - 0s 0 0 434.28915 0 51 - 434.28915 - - 0s 0 0 434.28915 0 53 - 434.28915 - - 0s 0 0 434.28915 0 52 - 434.28915 - - 0s 0 2 434.30152 0 51 - 434.30152 - - 0s H 608 388 487.0000000 438.87497 9.88% 15.2 2s H 609 368 476.0000000 439.45646 7.68% 15.2 2s H 611 352 471.0000000 440.14297 6.55% 15.1 2s 631 365 452.06714 8 66 471.00000 443.25698 5.89% 14.6 5s H 641 352 461.0000000 443.57115 3.78% 14.4 6s H 723 344 453.0000000 444.14757 1.95% 18.8 7s Cutting planes: Learned: 3 Gomory: 18 Cover: 32 Implied bound: 2 Clique: 6 MIR: 105 GUB cover: 19 Zero half: 124 Explored 931 nodes (19387 simplex iterations) in 7.94 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.530000000000e+02, best bound 4.530000000000e+02, gap 0.0%