Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:25:08 2012 Optimize a model with 319 rows, 232 columns and 1027 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 319 rows, 231 columns, 1026 nonzeros Variable types: 0 continuous, 231 integer (230 binary) Found heuristic solution: objective 70.0000000 Root relaxation: objective 0.000000e+00, 135 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 71 70.00000 0.00000 100% - 0s H 0 0 58.0000000 0.00000 100% - 0s H 0 0 57.0000000 0.00000 100% - 0s 0 0 0.64464 0 72 57.00000 0.64464 98.9% - 0s 0 0 1.04432 0 75 57.00000 1.04432 98.2% - 0s H 0 0 50.0000000 1.04432 97.9% - 0s H 0 0 49.0000000 1.04432 97.9% - 0s H 0 0 47.0000000 1.04432 97.8% - 0s 0 2 1.04714 0 75 47.00000 1.04714 97.8% - 0s * 34 34 19 37.0000000 4.04687 89.1% 35.2 0s * 80 54 22 33.0000000 4.09760 87.6% 25.9 0s 6194 208 cutoff 24 33.00000 25.43478 22.9% 21.2 5s * 7025 26 28 32.0000000 30.33333 5.21% 20.7 5s Cutting planes: Gomory: 3 Zero half: 1 Explored 7052 nodes (145856 simplex iterations) in 5.51 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.200000000000e+01, best bound 3.200000000000e+01, gap 0.0%