Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:18 2012 Optimize a model with 356 rows, 114 columns and 712 nonzeros Presolve removed 83 rows and 8 columns Presolve time: 0.00s Presolved: 273 rows, 106 columns, 577 nonzeros Variable types: 0 continuous, 106 integer (106 binary) Found heuristic solution: objective 40.0000000 Root relaxation: objective 4.950000e+01, 160 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 49.50000 0 87 40.00000 49.50000 23.8% - 0s 0 0 49.00000 0 90 40.00000 49.00000 22.5% - 0s 0 0 48.00000 0 93 40.00000 48.00000 20.0% - 0s H 0 0 42.0000000 48.00000 14.3% - 0s 0 0 47.80645 0 103 42.00000 47.80645 13.8% - 0s 0 0 47.33333 0 100 42.00000 47.33333 12.7% - 0s 0 0 46.90000 0 99 42.00000 46.90000 11.7% - 0s 0 0 46.78333 0 105 42.00000 46.78333 11.4% - 0s 0 0 46.58755 0 106 42.00000 46.58755 10.9% - 0s 0 0 46.43871 0 105 42.00000 46.43871 10.6% - 0s H 0 0 43.0000000 46.43871 8.00% - 0s 0 0 46.32192 0 106 43.00000 46.32192 7.73% - 0s 0 0 46.14418 0 101 43.00000 46.14418 7.31% - 0s 0 0 45.99059 0 99 43.00000 45.99059 6.95% - 0s 0 0 45.96546 0 102 43.00000 45.96546 6.90% - 0s 0 0 45.96546 0 102 43.00000 45.96546 6.90% - 0s H 0 0 44.0000000 45.96546 4.47% - 0s 0 2 45.96546 0 102 44.00000 45.96546 4.47% - 0s Cutting planes: Gomory: 1 Zero half: 72 Explored 33 nodes (1535 simplex iterations) in 0.09 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%