Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:15 2012 Optimize a model with 338 rows, 110 columns and 676 nonzeros Presolve removed 50 rows and 0 columns Presolve time: 0.00s Presolved: 288 rows, 110 columns, 605 nonzeros Variable types: 0 continuous, 110 integer (110 binary) Found heuristic solution: objective 38.0000000 Root relaxation: objective 4.850000e+01, 132 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 48.50000 0 91 38.00000 48.50000 27.6% - 0s 0 0 47.33333 0 104 38.00000 47.33333 24.6% - 0s H 0 0 41.0000000 47.33333 15.4% - 0s 0 0 47.00000 0 103 41.00000 47.00000 14.6% - 0s 0 0 46.10000 0 109 41.00000 46.10000 12.4% - 0s 0 0 45.62500 0 109 41.00000 45.62500 11.3% - 0s 0 0 45.38462 0 96 41.00000 45.38462 10.7% - 0s 0 0 45.32090 0 110 41.00000 45.32090 10.5% - 0s H 0 0 42.0000000 45.32090 7.91% - 0s 0 0 45.23664 0 107 42.00000 45.23664 7.71% - 0s H 0 0 43.0000000 45.23664 5.20% - 0s 0 0 45.19341 0 109 43.00000 45.19341 5.10% - 0s 0 0 45.11538 0 103 43.00000 45.11538 4.92% - 0s 0 0 45.02698 0 107 43.00000 45.02698 4.71% - 0s 0 0 44.89264 0 109 43.00000 44.89264 4.40% - 0s 0 0 44.89062 0 110 43.00000 44.89062 4.40% - 0s 0 0 44.89062 0 109 43.00000 44.89062 4.40% - 0s 0 2 44.89062 0 109 43.00000 44.89062 4.40% - 0s Cutting planes: Gomory: 1 Zero half: 51 Explored 29 nodes (1170 simplex iterations) in 0.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.300000000000e+01, best bound 4.300000000000e+01, gap 0.0%