Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:04:32 2013 Optimize a model with 58672 rows, 57912 columns and 231192 nonzeros Presolve removed 76 rows and 0 columns Presolve time: 0.27s Presolved: 58596 rows, 57912 columns, 231116 nonzeros Variable types: 57836 continuous, 76 integer (76 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 7263 6.6693244e+04 2.105354e+03 0.000000e+00 5s 7936 6.6828149e+04 0.000000e+00 0.000000e+00 7s Root relaxation: objective 6.682815e+04, 7936 iterations, 6.59 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 66828.1493 0 59 - 66828.1493 - - 7s H 0 0 108360.00000 66828.1493 38.3% - 9s 0 0 85709.2394 0 20 108360.000 85709.2394 20.9% - 18s H 0 0 96528.000000 85709.2394 11.2% - 19s H 0 0 95357.000000 85709.2394 10.1% - 19s 0 0 90703.0038 0 7 95357.0000 90703.0038 4.88% - 22s 0 0 91174.2060 0 4 95357.0000 91174.2060 4.39% - 23s H 0 0 94043.407297 91174.2060 3.05% - 23s H 0 0 93296.000000 91174.2060 2.27% - 23s H 0 0 92114.470588 91174.2060 1.02% - 24s 0 2 91174.8905 0 4 92114.4706 91174.8905 1.02% - 24s 1 3 91226.5254 1 4 92114.4706 91226.5254 0.96% 279 25s H 5 5 91702.554945 91293.0456 0.45% 178 25s H 7 6 91563.395349 91293.0456 0.30% 197 26s * 9 4 8 91399.000000 91293.0456 0.12% 178 26s Cutting planes: Implied bound: 75 Explored 22 nodes (20935 simplex iterations) in 27.38 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.139900000000e+04, best bound 9.139900000000e+04, gap 0.0%