Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:21:33 2013 Optimize a model with 61776 rows, 60996 columns and 243516 nonzeros Presolve removed 78 rows and 0 columns Presolve time: 0.28s Presolved: 61698 rows, 60996 columns, 243438 nonzeros Variable types: 60918 continuous, 78 integer (78 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 7718 6.7951474e+04 2.252335e+02 0.000000e+00 5s 8139 6.7993726e+04 0.000000e+00 0.000000e+00 6s Root relaxation: objective 6.799373e+04, 8139 iterations, 6.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 67993.7255 0 59 - 67993.7255 - - 6s H 0 0 111104.00000 67993.7255 38.8% - 10s 0 0 84264.8322 0 22 111104.000 84264.8322 24.2% - 23s H 0 0 104237.00000 84264.8322 19.2% - 24s 0 0 87580.2775 0 6 104237.000 87580.2775 16.0% - 27s H 0 0 94282.043353 87580.2775 7.11% - 27s H 0 0 92661.000000 87580.2775 5.48% - 27s 0 0 87852.5698 0 4 92661.0000 87852.5698 5.19% - 28s H 0 0 90665.795492 87852.5698 3.10% - 28s H 0 0 90043.000000 87852.5698 2.43% - 28s H 0 0 87962.000000 87852.5698 0.12% - 28s 0 0 87877.3000 0 2 87962.0000 87877.3000 0.10% - 29s 0 2 87878.0012 0 2 87962.0000 87878.0012 0.10% - 31s * 6 2 5 87932.000000 87903.5477 0.03% 162 32s Cutting planes: Implied bound: 74 Explored 9 nodes (19313 simplex iterations) in 32.58 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.793200000000e+04, best bound 8.793200000000e+04, gap 0.0%