Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:11:36 2012 Optimize a model with 853 rows, 132 columns and 1706 nonzeros Presolve removed 328 rows and 0 columns Presolve time: 0.01s Presolved: 525 rows, 132 columns, 1344 nonzeros Variable types: 0 continuous, 132 integer (132 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 4.429533e+01, 346 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 44.29533 0 131 29.00000 44.29533 52.7% - 0s 0 0 43.90263 0 132 29.00000 43.90263 51.4% - 0s 0 0 43.77901 0 132 29.00000 43.77901 51.0% - 0s 0 0 43.72696 0 131 29.00000 43.72696 50.8% - 0s 0 0 43.69700 0 132 29.00000 43.69700 50.7% - 0s H 0 0 30.0000000 43.69700 45.7% - 0s 0 0 43.67197 0 132 30.00000 43.67197 45.6% - 0s H 0 0 32.0000000 43.67197 36.5% - 0s 0 0 43.64268 0 132 32.00000 43.64268 36.4% - 0s 0 0 43.59890 0 132 32.00000 43.59890 36.2% - 0s 0 0 43.54614 0 132 32.00000 43.54614 36.1% - 0s 0 0 43.50192 0 132 32.00000 43.50192 35.9% - 0s 0 0 43.48700 0 132 32.00000 43.48700 35.9% - 0s 0 0 43.48311 0 132 32.00000 43.48311 35.9% - 0s 0 0 43.48311 0 132 32.00000 43.48311 35.9% - 0s 0 2 43.47941 0 132 32.00000 43.47941 35.9% - 0s H 7 7 34.0000000 43.47941 27.9% 76.4 0s 3481 1254 36.12963 25 87 34.00000 39.00000 14.7% 31.6 5s 9492 2443 35.50000 30 63 34.00000 37.66667 10.8% 26.8 10s *11602 1886 27 35.0000000 37.33333 6.67% 26.1 11s Explored 14982 nodes (364052 simplex iterations) in 13.27 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%