Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:10:18 2012 Optimize a model with 441 rows, 427 columns and 1527 nonzeros Presolve removed 0 rows and 26 columns Presolve time: 0.00s Presolved: 441 rows, 401 columns, 1501 nonzeros Variable types: 0 continuous, 401 integer (400 binary) Found heuristic solution: objective 70.0000000 Root relaxation: objective 0.000000e+00, 224 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 170 70.00000 0.00000 100% - 0s H 0 0 65.0000000 0.00000 100% - 0s H 0 0 59.0000000 0.00000 100% - 0s H 0 0 54.0000000 0.00000 100% - 0s 0 0 0.34506 0 172 54.00000 0.34506 99.4% - 0s H 0 0 52.0000000 0.34506 99.3% - 0s H 0 0 48.0000000 0.34506 99.3% - 0s 0 0 0.66667 0 172 48.00000 0.66667 98.6% - 0s H 0 0 45.0000000 0.66667 98.5% - 0s 0 0 0.66667 0 174 45.00000 0.66667 98.5% - 0s 0 0 0.66667 0 172 45.00000 0.66667 98.5% - 0s H 0 0 42.0000000 0.66667 98.4% - 0s 0 0 0.66667 0 174 42.00000 0.66667 98.4% - 0s 0 0 0.66667 0 174 42.00000 0.66667 98.4% - 0s H 0 0 41.0000000 0.66667 98.4% - 0s H 0 0 39.0000000 0.66667 98.3% - 0s H 0 0 37.0000000 0.66667 98.2% - 0s H 0 0 35.0000000 0.66667 98.1% - 0s 0 2 0.66667 0 172 35.00000 0.66667 98.1% - 0s H 27 27 16.0000000 1.00000 93.8% 51.3 0s H 514 134 15.0000000 7.90769 47.3% 26.8 0s Cutting planes: Gomory: 3 Zero half: 2 Explored 1164 nodes (29514 simplex iterations) in 1.20 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%