Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:51:09 2012 Optimize a model with 651 rows, 113 columns and 1302 nonzeros Presolve removed 236 rows and 0 columns Presolve time: 0.01s Presolved: 415 rows, 113 columns, 1032 nonzeros Variable types: 0 continuous, 113 integer (113 binary) Found heuristic solution: objective 27.0000000 Root relaxation: objective 3.880916e+01, 275 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 38.80916 0 107 27.00000 38.80916 43.7% - 0s H 0 0 28.0000000 38.80916 38.6% - 0s 0 0 38.33300 0 108 28.00000 38.33300 36.9% - 0s H 0 0 29.0000000 38.33300 32.2% - 0s 0 0 38.26162 0 109 29.00000 38.26162 31.9% - 0s 0 0 38.08893 0 107 29.00000 38.08893 31.3% - 0s 0 0 37.95392 0 108 29.00000 37.95392 30.9% - 0s 0 0 37.88689 0 109 29.00000 37.88689 30.6% - 0s 0 0 37.83964 0 109 29.00000 37.83964 30.5% - 0s 0 0 37.78566 0 110 29.00000 37.78566 30.3% - 0s H 0 0 30.0000000 37.78566 26.0% - 0s 0 0 37.74779 0 110 30.00000 37.74779 25.8% - 0s 0 0 37.68335 0 111 30.00000 37.68335 25.6% - 0s 0 0 37.57626 0 110 30.00000 37.57626 25.3% - 0s 0 0 37.49248 0 110 30.00000 37.49248 25.0% - 0s 0 0 37.42447 0 112 30.00000 37.42447 24.7% - 0s 0 0 37.39526 0 111 30.00000 37.39526 24.7% - 0s 0 0 37.27915 0 111 30.00000 37.27915 24.3% - 0s 0 0 37.20192 0 111 30.00000 37.20192 24.0% - 0s 0 0 37.19034 0 111 30.00000 37.19034 24.0% - 0s 0 0 37.19034 0 110 30.00000 37.19034 24.0% - 0s 0 2 37.18960 0 110 30.00000 37.18960 24.0% - 0s * 64 26 8 31.0000000 36.82824 18.8% 27.2 0s H 195 42 32.0000000 35.74886 11.7% 26.2 0s Cutting planes: Gomory: 1 Clique: 4 Zero half: 60 Explored 648 nodes (16777 simplex iterations) in 0.67 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.200000000000e+01, best bound 3.200000000000e+01, gap 0.0%