Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:00:23 2012 Optimize a model with 783 rows, 125 columns and 1566 nonzeros Presolve removed 298 rows and 0 columns Presolve time: 0.00s Presolved: 485 rows, 125 columns, 1233 nonzeros Variable types: 0 continuous, 125 integer (125 binary) Found heuristic solution: objective 30.0000000 Root relaxation: objective 4.227907e+01, 314 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 42.27907 0 124 30.00000 42.27907 40.9% - 0s H 0 0 32.0000000 42.27907 32.1% - 0s 0 0 41.94026 0 124 32.00000 41.94026 31.1% - 0s 0 0 41.53650 0 125 32.00000 41.53650 29.8% - 0s 0 0 41.38333 0 122 32.00000 41.38333 29.3% - 0s 0 0 41.30501 0 123 32.00000 41.30501 29.1% - 0s 0 0 41.23145 0 123 32.00000 41.23145 28.8% - 0s 0 0 41.13619 0 124 32.00000 41.13619 28.6% - 0s 0 0 41.04378 0 125 32.00000 41.04378 28.3% - 0s 0 0 40.99299 0 124 32.00000 40.99299 28.1% - 0s 0 0 40.95291 0 123 32.00000 40.95291 28.0% - 0s 0 0 40.92377 0 125 32.00000 40.92377 27.9% - 0s 0 0 40.89241 0 125 32.00000 40.89241 27.8% - 0s 0 0 40.88039 0 124 32.00000 40.88039 27.8% - 0s 0 0 40.82310 0 124 32.00000 40.82310 27.6% - 0s 0 0 40.75390 0 122 32.00000 40.75390 27.4% - 0s 0 0 40.71452 0 124 32.00000 40.71452 27.2% - 0s 0 0 40.69501 0 124 32.00000 40.69501 27.2% - 0s 0 0 40.69158 0 125 32.00000 40.69158 27.2% - 0s 0 0 40.69158 0 125 32.00000 40.69158 27.2% - 0s 0 2 40.69017 0 125 32.00000 40.69017 27.2% - 0s * 13 12 12 33.0000000 40.69017 23.3% 55.7 0s * 241 87 18 34.0000000 38.91852 14.5% 36.9 0s 984 170 35.40000 23 79 34.00000 37.59091 10.6% 35.6 5s * 1123 93 23 35.0000000 37.28947 6.54% 34.4 5s Cutting planes: Gomory: 3 Clique: 2 Zero half: 43 Explored 1262 nodes (42639 simplex iterations) in 5.23 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%