Gurobi 5.0.1 (linux64) logging started Mon Nov 19 09:15:11 2012 Optimize a model with 6598 rows, 163 columns and 13196 nonzeros Presolve removed 4795 rows and 0 columns Presolve time: 0.27s Presolved: 1803 rows, 163 columns, 13143 nonzeros Variable types: 0 continuous, 163 integer (163 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 2.035925e+01, 857 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 20.35925 0 163 8.00000 20.35925 154% - 0s 0 0 19.74998 0 161 8.00000 19.74998 147% - 0s H 0 0 9.0000000 19.74998 119% - 0s 0 0 19.54026 0 161 9.00000 19.54026 117% - 0s H 0 0 10.0000000 19.54026 95.4% - 0s 0 0 19.42536 0 161 10.00000 19.42536 94.3% - 1s 0 0 19.37065 0 163 10.00000 19.37065 93.7% - 1s 0 0 19.35441 0 163 10.00000 19.35441 93.5% - 1s 0 0 19.34741 0 163 10.00000 19.34741 93.5% - 1s 0 0 19.34690 0 163 10.00000 19.34690 93.5% - 2s 0 0 19.34682 0 163 10.00000 19.34682 93.5% - 2s 0 0 19.34663 0 163 10.00000 19.34663 93.5% - 2s 0 2 19.34560 0 163 10.00000 19.34560 93.5% - 3s H 86 69 11.0000000 19.33885 75.8% 105 4s 153 114 14.98903 4 72 11.00000 18.89091 71.7% 107 5s 601 279 13.26084 11 163 11.00000 16.19582 47.2% 97.3 12s 609 286 16.19582 16 162 11.00000 16.19582 47.2% 98.1 15s 673 329 15.78418 48 129 11.00000 15.94921 45.0% 132 20s 1314 310 13.54295 29 72 11.00000 14.61093 32.8% 102 25s 1716 210 13.28157 41 68 11.00000 13.44119 22.2% 91.5 30s 1942 87 12.30931 28 48 11.00000 12.64840 15.0% 85.5 35s Cutting planes: Clique: 60 Explored 2066 nodes (169896 simplex iterations) in 37.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.100000000000e+01, best bound 1.100000000000e+01, gap 0.0%