Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:30:12 2012 Optimize a model with 941 rows, 140 columns and 1882 nonzeros Presolve removed 343 rows and 0 columns Presolve time: 0.01s Presolved: 598 rows, 140 columns, 1542 nonzeros Variable types: 0 continuous, 140 integer (140 binary) Found heuristic solution: objective 32.0000000 Root relaxation: objective 4.734464e+01, 448 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 47.34464 0 140 32.00000 47.34464 48.0% - 0s 0 0 47.04407 0 140 32.00000 47.04407 47.0% - 0s 0 0 46.95768 0 140 32.00000 46.95768 46.7% - 0s H 0 0 33.0000000 46.95768 42.3% - 0s 0 0 46.81330 0 140 33.00000 46.81330 41.9% - 0s H 0 0 34.0000000 46.81330 37.7% - 0s 0 0 46.49170 0 140 34.00000 46.49170 36.7% - 0s 0 0 46.39222 0 140 34.00000 46.39222 36.4% - 0s 0 0 46.23764 0 140 34.00000 46.23764 36.0% - 0s 0 0 46.19394 0 140 34.00000 46.19394 35.9% - 0s 0 0 46.12828 0 140 34.00000 46.12828 35.7% - 0s 0 0 46.05456 0 139 34.00000 46.05456 35.5% - 0s 0 0 45.97482 0 140 34.00000 45.97482 35.2% - 0s 0 0 45.88684 0 140 34.00000 45.88684 35.0% - 0s 0 0 45.72362 0 140 34.00000 45.72362 34.5% - 0s 0 0 45.58411 0 140 34.00000 45.58411 34.1% - 0s 0 0 45.55149 0 139 34.00000 45.55149 34.0% - 0s 0 0 45.52476 0 139 34.00000 45.52476 33.9% - 0s 0 0 45.49556 0 140 34.00000 45.49556 33.8% - 0s 0 0 45.45878 0 140 34.00000 45.45878 33.7% - 0s 0 0 45.45041 0 140 34.00000 45.45041 33.7% - 0s 0 0 45.45041 0 140 34.00000 45.45041 33.7% - 0s 0 2 45.44851 0 140 34.00000 45.44851 33.7% - 0s H 27 15 35.0000000 45.23847 29.3% 67.0 0s H 138 67 36.0000000 43.90500 22.0% 48.7 0s 612 247 38.25000 16 140 36.00000 42.33452 17.6% 40.7 5s H 1483 376 37.0000000 41.82564 13.0% 42.0 7s 2916 573 39.23383 20 93 37.00000 40.17187 8.57% 35.8 10s Cutting planes: Gomory: 4 Zero half: 46 Explored 4649 nodes (148577 simplex iterations) in 12.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.700000000000e+01, best bound 3.700000000000e+01, gap 0.0%