Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:20:43 2012 Optimize a model with 962 rows, 137 columns and 1924 nonzeros Presolve removed 389 rows and 0 columns Presolve time: 0.01s Presolved: 573 rows, 137 columns, 1515 nonzeros Variable types: 0 continuous, 137 integer (137 binary) Found heuristic solution: objective 33.0000000 Root relaxation: objective 4.524285e+01, 385 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 45.24285 0 135 33.00000 45.24285 37.1% - 0s 0 0 44.80447 0 135 33.00000 44.80447 35.8% - 0s 0 0 44.40012 0 135 33.00000 44.40012 34.5% - 0s 0 0 44.25809 0 133 33.00000 44.25809 34.1% - 0s 0 0 44.14011 0 135 33.00000 44.14011 33.8% - 0s 0 0 44.02992 0 136 33.00000 44.02992 33.4% - 0s 0 0 44.02830 0 136 33.00000 44.02830 33.4% - 0s 0 0 44.02830 0 136 33.00000 44.02830 33.4% - 0s 0 2 44.02785 0 135 33.00000 44.02785 33.4% - 0s H 263 88 35.0000000 41.72279 19.2% 40.1 0s 2806 632 37.44444 26 98 35.00000 38.83333 11.0% 36.0 5s Explored 7380 nodes (218503 simplex iterations) in 9.39 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.500000000000e+01, best bound 3.500000000000e+01, gap 0.0%