Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:57 2012 Optimize a model with 1694 rows, 83 columns and 3388 nonzeros Presolve removed 1163 rows and 0 columns Presolve time: 0.05s Presolved: 531 rows, 83 columns, 3376 nonzeros Variable types: 0 continuous, 83 integer (83 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.309007e+01, 272 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 13.09007 0 78 7.00000 13.09007 87.0% - 0s H 0 0 8.0000000 13.09007 63.6% - 0s 0 0 12.65581 0 80 8.00000 12.65581 58.2% - 0s 0 0 12.52954 0 79 8.00000 12.52954 56.6% - 0s 0 0 12.48955 0 81 8.00000 12.48955 56.1% - 0s H 0 0 9.0000000 12.48955 38.8% - 0s 0 0 12.48729 0 81 9.00000 12.48729 38.7% - 0s 0 0 12.48486 0 81 9.00000 12.48486 38.7% - 0s H 0 0 10.0000000 12.48486 24.8% - 0s 0 0 12.48465 0 82 10.00000 12.48465 24.8% - 0s 0 0 12.48463 0 82 10.00000 12.48463 24.8% - 0s 0 2 12.48291 0 82 10.00000 12.48291 24.8% - 0s Cutting planes: Clique: 33 Zero half: 2 Explored 19 nodes (1683 simplex iterations) in 0.50 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+01, best bound 1.000000000000e+01, gap 0.0%