Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:17 2012 Optimize a model with 299 rows, 113 columns and 598 nonzeros Presolve removed 73 rows and 10 columns Presolve time: 0.00s Presolved: 226 rows, 103 columns, 474 nonzeros Variable types: 0 continuous, 103 integer (103 binary) Found heuristic solution: objective 43.0000000 Root relaxation: objective 5.150000e+01, 143 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 51.50000 0 79 43.00000 51.50000 19.8% - 0s 0 0 50.00000 0 80 43.00000 50.00000 16.3% - 0s 0 0 49.60000 0 95 43.00000 49.60000 15.3% - 0s H 0 0 44.0000000 49.60000 12.7% - 0s 0 0 49.50000 0 81 44.00000 49.50000 12.5% - 0s 0 0 49.33333 0 92 44.00000 49.33333 12.1% - 0s 0 0 49.08333 0 96 44.00000 49.08333 11.6% - 0s 0 0 48.94118 0 95 44.00000 48.94118 11.2% - 0s 0 0 48.50000 0 96 44.00000 48.50000 10.2% - 0s 0 0 48.50000 0 95 44.00000 48.50000 10.2% - 0s 0 0 48.40000 0 96 44.00000 48.40000 10.0% - 0s 0 0 48.15385 0 100 44.00000 48.15385 9.44% - 0s 0 0 48.12381 0 99 44.00000 48.12381 9.37% - 0s H 0 0 45.0000000 48.12381 6.94% - 0s H 0 0 46.0000000 48.12381 4.62% - 0s 0 0 48.05970 0 93 46.00000 48.05970 4.48% - 0s 0 0 48.00000 0 101 46.00000 48.00000 4.35% - 0s 0 0 48.00000 0 101 46.00000 48.00000 4.35% - 0s 0 0 48.00000 0 91 46.00000 48.00000 4.35% - 0s 0 2 48.00000 0 91 46.00000 48.00000 4.35% - 0s * 13 2 4 47.0000000 47.25000 0.53% 18.8 0s Cutting planes: Gomory: 1 Zero half: 35 Explored 14 nodes (979 simplex iterations) in 0.06 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%