Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:42:57 2012 Optimize a model with 5407 rows, 147 columns and 10814 nonzeros Presolve removed 3888 rows and 0 columns Presolve time: 0.21s Presolved: 1519 rows, 147 columns, 11039 nonzeros Variable types: 0 continuous, 147 integer (147 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.845260e+01, 686 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 18.45260 0 146 6.00000 18.45260 208% - 0s H 0 0 7.0000000 18.45260 164% - 0s H 0 0 8.0000000 18.45260 131% - 0s 0 0 18.03863 0 145 8.00000 18.03863 125% - 0s 0 0 17.93248 0 145 8.00000 17.93248 124% - 0s H 0 0 9.0000000 17.93248 99.2% - 0s 0 0 17.86884 0 147 9.00000 17.86884 98.5% - 0s 0 0 17.81005 0 146 9.00000 17.81005 97.9% - 1s 0 0 17.76755 0 147 9.00000 17.76755 97.4% - 1s 0 0 17.73327 0 147 9.00000 17.73327 97.0% - 1s 0 0 17.71741 0 146 9.00000 17.71741 96.9% - 1s 0 0 17.69927 0 147 9.00000 17.69927 96.7% - 2s 0 0 17.67481 0 147 9.00000 17.67481 96.4% - 2s 0 0 17.66134 0 147 9.00000 17.66134 96.2% - 2s 0 0 17.65284 0 147 9.00000 17.65284 96.1% - 2s 0 0 17.64612 0 147 9.00000 17.64612 96.1% - 2s 0 0 17.64491 0 147 9.00000 17.64491 96.1% - 3s 0 0 17.64421 0 147 9.00000 17.64421 96.0% - 3s 0 0 17.64366 0 147 9.00000 17.64366 96.0% - 3s 0 2 17.64260 0 147 9.00000 17.64260 96.0% - 3s 105 92 14.74942 2 83 9.00000 17.38802 93.2% 98.8 5s H 279 173 10.0000000 16.84871 68.5% 77.5 6s 722 246 11.13235 7 35 10.00000 13.74079 37.4% 75.8 10s Cutting planes: Clique: 170 Explored 1166 nodes (81034 simplex iterations) in 14.12 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%