Gurobi 5.0.1 (linux64) logging started Mon Nov 19 09:30:27 2012 Optimize a model with 6780 rows, 165 columns and 13560 nonzeros Presolve removed 4913 rows and 0 columns Presolve time: 0.29s Presolved: 1867 rows, 165 columns, 13630 nonzeros Variable types: 0 continuous, 165 integer (165 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 2.045620e+01, 774 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 20.45620 0 161 8.00000 20.45620 156% - 0s 0 0 19.78361 0 165 8.00000 19.78361 147% - 0s H 0 0 9.0000000 19.78361 120% - 0s 0 0 19.67133 0 165 9.00000 19.67133 119% - 0s 0 0 19.63689 0 165 9.00000 19.63689 118% - 1s 0 0 19.61151 0 165 9.00000 19.61151 118% - 1s 0 0 19.60700 0 165 9.00000 19.60700 118% - 1s 0 0 19.59895 0 165 9.00000 19.59895 118% - 1s H 0 0 10.0000000 19.59895 96.0% - 1s 0 0 19.58910 0 165 10.00000 19.58910 95.9% - 2s 0 0 19.58348 0 165 10.00000 19.58348 95.8% - 2s 0 0 19.58125 0 165 10.00000 19.58125 95.8% - 2s 0 0 19.58096 0 165 10.00000 19.58096 95.8% - 2s 0 0 19.58073 0 165 10.00000 19.58073 95.8% - 3s 0 0 19.57980 0 165 10.00000 19.57980 95.8% - 3s 0 2 19.57966 0 165 10.00000 19.57966 95.8% - 3s 81 83 11.13689 81 82 10.00000 19.57966 95.8% 102 5s 577 372 14.28621 18 76 10.00000 17.49827 75.0% 82.6 10s 613 397 13.96138 13 165 10.00000 17.49827 75.0% 79.6 15s 657 428 14.08323 36 74 10.00000 17.04122 70.4% 109 20s 912 473 12.40159 39 65 10.00000 15.66813 56.7% 124 25s 1389 513 12.42546 39 59 10.00000 14.87270 48.7% 97.5 30s 1722 505 12.02639 25 42 10.00000 14.34575 43.5% 86.4 35s 2341 626 11.15920 29 42 10.00000 13.68691 36.9% 75.8 40s 3012 600 12.27498 56 58 10.00000 12.65259 26.5% 70.2 45s Cutting planes: Clique: 70 Explored 4153 nodes (244232 simplex iterations) in 49.70 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%