Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:48:00 2012 Optimize a model with 2467 rows, 99 columns and 4934 nonzeros Presolve removed 1761 rows and 0 columns Presolve time: 0.07s Presolved: 706 rows, 99 columns, 4831 nonzeros Variable types: 0 continuous, 99 integer (99 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.389377e+01, 416 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 13.89377 0 92 7.00000 13.89377 98.5% - 0s H 0 0 8.0000000 13.89377 73.7% - 0s 0 0 13.44581 0 98 8.00000 13.44581 68.1% - 0s 0 0 13.39006 0 96 8.00000 13.39006 67.4% - 0s 0 0 13.36699 0 97 8.00000 13.36699 67.1% - 0s 0 0 13.36011 0 97 8.00000 13.36011 67.0% - 0s H 0 0 9.0000000 13.36011 48.4% - 0s 0 0 13.35917 0 97 9.00000 13.35917 48.4% - 0s 0 0 13.35871 0 98 9.00000 13.35871 48.4% - 0s 0 0 13.35853 0 98 9.00000 13.35853 48.4% - 0s 0 2 13.35700 0 98 9.00000 13.35700 48.4% - 1s Cutting planes: Clique: 67 Zero half: 2 Explored 132 nodes (8884 simplex iterations) in 1.50 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%