Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:30:59 2012 Optimize a model with 974 rows, 140 columns and 1948 nonzeros Presolve removed 373 rows and 0 columns Presolve time: 0.01s Presolved: 601 rows, 140 columns, 1566 nonzeros Variable types: 0 continuous, 140 integer (140 binary) Found heuristic solution: objective 27.0000000 Root relaxation: objective 4.632905e+01, 391 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 46.32905 0 139 27.00000 46.32905 71.6% - 0s H 0 0 28.0000000 46.32905 65.5% - 0s 0 0 45.99994 0 139 28.00000 45.99994 64.3% - 0s H 0 0 30.0000000 45.99994 53.3% - 0s 0 0 45.83723 0 139 30.00000 45.83723 52.8% - 0s 0 0 45.69254 0 140 30.00000 45.69254 52.3% - 0s 0 0 45.52439 0 139 30.00000 45.52439 51.7% - 0s 0 0 45.35981 0 139 30.00000 45.35981 51.2% - 0s 0 0 45.23207 0 139 30.00000 45.23207 50.8% - 0s H 0 0 31.0000000 45.23207 45.9% - 0s 0 0 45.05143 0 139 31.00000 45.05143 45.3% - 0s 0 0 44.91020 0 139 31.00000 44.91020 44.9% - 0s 0 0 44.86075 0 139 31.00000 44.86075 44.7% - 0s 0 0 44.77406 0 138 31.00000 44.77406 44.4% - 0s 0 0 44.68649 0 139 31.00000 44.68649 44.1% - 0s 0 0 44.64432 0 138 31.00000 44.64432 44.0% - 0s 0 0 44.60744 0 139 31.00000 44.60744 43.9% - 0s 0 0 44.58840 0 139 31.00000 44.58840 43.8% - 0s 0 0 44.56792 0 139 31.00000 44.56792 43.8% - 0s 0 0 44.54960 0 139 31.00000 44.54960 43.7% - 0s 0 0 44.54330 0 139 31.00000 44.54330 43.7% - 0s 0 0 44.53017 0 139 31.00000 44.53017 43.6% - 0s 0 2 44.52857 0 139 31.00000 44.52857 43.6% - 0s H 27 20 32.0000000 44.52431 39.1% 42.3 0s * 122 64 10 33.0000000 43.28467 31.2% 46.7 0s 612 288 37.79487 17 139 33.00000 41.61235 26.1% 39.4 5s 626 298 40.06250 6 138 33.00000 41.61235 26.1% 38.5 10s H 1600 568 34.0000000 40.87917 20.2% 43.3 13s 2587 1054 37.04192 32 95 34.00000 39.70759 16.8% 39.7 15s 5697 1978 37.50000 26 92 34.00000 38.23077 12.4% 33.7 20s 9288 2175 35.00000 31 79 34.00000 37.26087 9.59% 30.7 25s 14052 1043 35.33333 32 65 34.00000 36.00000 5.88% 28.4 30s Cutting planes: Gomory: 1 Clique: 5 Zero half: 97 Explored 15616 nodes (427599 simplex iterations) in 33.63 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.400000000000e+01, best bound 3.400000000000e+01, gap 0.0%