Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:12:26 2012 Optimize a model with 4520 rows, 134 columns and 9040 nonzeros Presolve removed 3233 rows and 0 columns Presolve time: 0.17s Presolved: 1287 rows, 134 columns, 9167 nonzeros Variable types: 0 continuous, 134 integer (134 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.724347e+01, 635 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 17.24347 0 131 7.00000 17.24347 146% - 0s H 0 0 8.0000000 17.24347 116% - 0s 0 0 16.93222 0 134 8.00000 16.93222 112% - 0s 0 0 16.88139 0 134 8.00000 16.88139 111% - 0s H 0 0 9.0000000 16.88139 87.6% - 0s 0 0 16.87766 0 134 9.00000 16.87766 87.5% - 0s 0 0 16.86913 0 134 9.00000 16.86913 87.4% - 1s 0 2 16.86765 0 134 9.00000 16.86765 87.4% - 1s H 600 199 10.0000000 13.38763 33.9% 68.2 6s 652 233 11.41475 33 55 10.00000 13.38763 33.9% 87.6 10s Cutting planes: Clique: 28 Explored 1198 nodes (83704 simplex iterations) in 12.22 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%