Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:14 2012 Optimize a model with 333 rows, 110 columns and 666 nonzeros Presolve removed 74 rows and 5 columns Presolve time: 0.00s Presolved: 259 rows, 105 columns, 556 nonzeros Variable types: 0 continuous, 105 integer (105 binary) Found heuristic solution: objective 41.0000000 Root relaxation: objective 4.775000e+01, 170 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 47.75000 0 82 41.00000 47.75000 16.5% - 0s H 0 0 42.0000000 47.75000 13.7% - 0s 0 0 47.00000 0 82 42.00000 47.00000 11.9% - 0s 0 0 46.95349 0 103 42.00000 46.95349 11.8% - 0s 0 0 46.50000 0 94 42.00000 46.50000 10.7% - 0s 0 0 46.25000 0 100 42.00000 46.25000 10.1% - 0s 0 0 46.22807 0 101 42.00000 46.22807 10.1% - 0s 0 0 46.19697 0 102 42.00000 46.19697 10.0% - 0s 0 0 46.11111 0 103 42.00000 46.11111 9.79% - 0s 0 0 46.06758 0 100 42.00000 46.06758 9.68% - 0s 0 0 45.99469 0 103 42.00000 45.99469 9.51% - 0s 0 0 45.93548 0 102 42.00000 45.93548 9.37% - 0s 0 0 45.87199 0 103 42.00000 45.87199 9.22% - 0s 0 0 45.77368 0 103 42.00000 45.77368 8.98% - 0s H 0 0 43.0000000 45.77368 6.45% - 0s 0 0 45.75581 0 103 43.00000 45.75581 6.41% - 0s 0 0 45.75581 0 103 43.00000 45.75581 6.41% - 0s 0 2 45.75581 0 103 43.00000 45.75581 6.41% - 0s * 6 6 4 44.0000000 45.66667 3.79% 26.0 0s Cutting planes: Gomory: 2 Zero half: 47 Explored 21 nodes (1141 simplex iterations) in 0.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.400000000000e+01, best bound 4.400000000000e+01, gap 0.0%