Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:18 2012 Optimize a model with 322 rows, 114 columns and 644 nonzeros Presolve removed 57 rows and 0 columns Presolve time: 0.00s Presolved: 265 rows, 114 columns, 564 nonzeros Variable types: 0 continuous, 114 integer (114 binary) Found heuristic solution: objective 42.0000000 Root relaxation: objective 4.966667e+01, 193 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 49.66667 0 107 42.00000 49.66667 18.3% - 0s 0 0 49.00000 0 110 42.00000 49.00000 16.7% - 0s 0 0 48.83333 0 112 42.00000 48.83333 16.3% - 0s 0 0 48.54167 0 113 42.00000 48.54167 15.6% - 0s 0 0 48.22222 0 113 42.00000 48.22222 14.8% - 0s 0 0 47.98387 0 113 42.00000 47.98387 14.2% - 0s 0 0 47.77778 0 109 42.00000 47.77778 13.8% - 0s 0 0 47.52338 0 110 42.00000 47.52338 13.2% - 0s H 0 0 43.0000000 47.52338 10.5% - 0s 0 0 47.38710 0 112 43.00000 47.38710 10.2% - 0s 0 0 47.21519 0 110 43.00000 47.21519 9.80% - 0s 0 0 47.14286 0 113 43.00000 47.14286 9.63% - 0s 0 0 47.14286 0 113 43.00000 47.14286 9.63% - 0s 0 0 47.14286 0 112 43.00000 47.14286 9.63% - 0s H 0 0 44.0000000 47.14286 7.14% - 0s H 0 0 46.0000000 47.14286 2.48% - 0s 0 2 47.14286 0 112 46.00000 47.14286 2.48% - 0s Cutting planes: Zero half: 38 Explored 5 nodes (851 simplex iterations) in 0.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.600000000000e+01, best bound 4.600000000000e+01, gap 0.0%