Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:23 2012 Optimize a model with 350 rows, 119 columns and 700 nonzeros Presolve removed 83 rows and 9 columns Presolve time: 0.00s Presolved: 267 rows, 110 columns, 568 nonzeros Variable types: 0 continuous, 110 integer (110 binary) Found heuristic solution: objective 40.0000000 Root relaxation: objective 5.250000e+01, 139 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 52.50000 0 93 40.00000 52.50000 31.2% - 0s 0 0 51.33333 0 98 40.00000 51.33333 28.3% - 0s H 0 0 41.0000000 51.33333 25.2% - 0s 0 0 50.62500 0 104 41.00000 50.62500 23.5% - 0s H 0 0 46.0000000 50.62500 10.1% - 0s 0 0 50.21875 0 108 46.00000 50.21875 9.17% - 0s 0 0 49.72222 0 104 46.00000 49.72222 8.09% - 0s H 0 0 47.0000000 49.72222 5.79% - 0s 0 0 49.46491 0 109 47.00000 49.46491 5.24% - 0s 0 0 49.36364 0 109 47.00000 49.36364 5.03% - 0s 0 0 49.16190 0 105 47.00000 49.16190 4.60% - 0s 0 0 49.00635 0 107 47.00000 49.00635 4.27% - 0s 0 0 48.88889 0 105 47.00000 48.88889 4.02% - 0s 0 0 48.85401 0 109 47.00000 48.85401 3.94% - 0s 0 0 48.85401 0 109 47.00000 48.85401 3.94% - 0s 0 2 48.85401 0 109 47.00000 48.85401 3.94% - 0s Cutting planes: Gomory: 1 Zero half: 70 Explored 29 nodes (1486 simplex iterations) in 0.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.700000000000e+01, best bound 4.700000000000e+01, gap 0.0%