Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:22:08 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 6962 6.5103332e+04 9.978264e+03 0.000000e+00 5s 7803 6.5299411e+04 0.000000e+00 0.000000e+00 7s Root relaxation: objective 6.529941e+04, 7803 iterations, 6.70 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 65299.4105 0 64 - 65299.4105 - - 7s H 0 0 106529.00000 65299.4105 38.7% - 12s 0 0 86284.1452 0 19 106529.000 86284.1452 19.0% - 22s H 0 0 100822.00000 86284.1452 14.4% - 22s 0 0 87621.0708 0 8 100822.000 87621.0708 13.1% - 24s H 0 0 98763.298948 87621.0708 11.3% - 24s H 0 0 95498.000000 87621.0708 8.25% - 24s 0 0 87742.8048 0 5 95498.0000 87742.8048 8.12% - 24s H 0 0 91794.776486 87742.8048 4.41% - 24s H 0 0 89446.000000 87742.8048 1.90% - 24s H 0 0 89211.000000 87742.8048 1.65% - 25s 0 2 87748.1419 0 5 89211.0000 87748.1419 1.64% - 26s H 8 7 88667.362069 88054.2242 0.69% 355 29s H 12 10 88648.576923 88054.2242 0.67% 323 29s H 14 9 88606.951613 88054.2242 0.62% 292 29s * 18 9 15 88574.000000 88054.2242 0.59% 231 29s 19 10 88145.1275 2 2 88574.0000 88070.1082 0.57% 227 30s * 23 9 5 88479.000000 88070.1082 0.46% 256 30s H 30 4 88335.000000 88070.1082 0.30% 225 31s Cutting planes: Gomory: 1 Implied bound: 76 Explored 62 nodes (26997 simplex iterations) in 33.27 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.833500000000e+04, best bound 8.833500000000e+04, gap 0.0%