Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:47:20 2012 Optimize a model with 2298 rows, 96 columns and 4596 nonzeros Presolve removed 1622 rows and 0 columns Presolve time: 0.07s Presolved: 676 rows, 96 columns, 4487 nonzeros Variable types: 0 continuous, 96 integer (96 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.375636e+01, 368 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 13.75636 0 89 6.00000 13.75636 129% - 0s H 0 0 7.0000000 13.75636 96.5% - 0s H 0 0 8.0000000 13.75636 72.0% - 0s 0 0 13.34038 0 93 8.00000 13.34038 66.8% - 0s H 0 0 9.0000000 13.34038 48.2% - 0s 0 0 13.28118 0 94 9.00000 13.28118 47.6% - 0s 0 0 13.26054 0 96 9.00000 13.26054 47.3% - 0s 0 0 13.25085 0 96 9.00000 13.25085 47.2% - 0s 0 0 13.24469 0 95 9.00000 13.24469 47.2% - 0s 0 0 13.24275 0 96 9.00000 13.24275 47.1% - 0s 0 0 13.24239 0 95 9.00000 13.24239 47.1% - 0s 0 0 13.24225 0 95 9.00000 13.24225 47.1% - 0s 0 2 13.24050 0 95 9.00000 13.24050 47.1% - 0s Cutting planes: Clique: 59 Zero half: 5 Explored 118 nodes (7928 simplex iterations) in 1.27 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%