Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:47:21 2012 Optimize a model with 2300 rows, 97 columns and 4600 nonzeros Presolve removed 1630 rows and 0 columns Presolve time: 0.07s Presolved: 670 rows, 97 columns, 4529 nonzeros Variable types: 0 continuous, 97 integer (97 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.393864e+01, 331 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 13.93864 0 90 7.00000 13.93864 99.1% - 0s H 0 0 9.0000000 13.93864 54.9% - 0s 0 0 13.57564 0 94 9.00000 13.57564 50.8% - 0s 0 0 13.54965 0 93 9.00000 13.54965 50.6% - 0s 0 0 13.53676 0 94 9.00000 13.53676 50.4% - 0s 0 0 13.52556 0 92 9.00000 13.52556 50.3% - 0s 0 0 13.51559 0 94 9.00000 13.51559 50.2% - 0s 0 0 13.51520 0 94 9.00000 13.51520 50.2% - 0s 0 0 13.51514 0 94 9.00000 13.51514 50.2% - 0s 0 2 13.51440 0 94 9.00000 13.51440 50.2% - 0s * 102 18 8 10.0000000 12.50311 25.0% 55.3 0s Cutting planes: Clique: 40 Zero half: 4 Explored 121 nodes (7101 simplex iterations) in 1.01 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%