Gurobi 5.0.1 (linux64) logging started Mon Nov 19 10:23:38 2012 Optimize a model with 7238 rows, 171 columns and 14476 nonzeros Presolve removed 5159 rows and 0 columns Presolve time: 0.32s Presolved: 2079 rows, 171 columns, 15003 nonzeros Variable types: 0 continuous, 171 integer (171 binary) Found heuristic solution: objective 9.0000000 Root relaxation: objective 2.126923e+01, 883 iterations, 0.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 21.26923 0 168 9.00000 21.26923 136% - 0s 0 0 20.68143 0 169 9.00000 20.68143 130% - 0s 0 0 20.40707 0 171 9.00000 20.40707 127% - 1s 0 0 20.33426 0 171 9.00000 20.33426 126% - 1s 0 0 20.26291 0 171 9.00000 20.26291 125% - 1s 0 0 20.18944 0 171 9.00000 20.18944 124% - 1s 0 0 20.17307 0 171 9.00000 20.17307 124% - 2s H 0 0 10.0000000 20.17307 102% - 2s 0 0 20.15831 0 171 10.00000 20.15831 102% - 2s 0 0 20.15580 0 171 10.00000 20.15580 102% - 2s 0 0 20.15397 0 171 10.00000 20.15397 102% - 2s 0 0 20.14867 0 171 10.00000 20.14867 101% - 3s 0 0 20.14792 0 171 10.00000 20.14792 101% - 3s 0 0 20.14758 0 171 10.00000 20.14758 101% - 3s 0 0 20.14747 0 171 10.00000 20.14747 101% - 3s 0 2 20.14746 0 171 10.00000 20.14746 101% - 4s 18 20 18.20955 18 153 10.00000 20.14746 101% 134 5s 433 321 12.26787 33 67 10.00000 18.94795 89.5% 89.7 10s H 600 355 11.0000000 18.20952 65.5% 89.6 17s 605 359 13.05392 22 171 11.00000 18.20952 65.5% 88.9 20s 612 363 12.73642 33 171 11.00000 18.20952 65.5% 87.9 25s 618 369 18.20952 11 169 11.00000 18.20952 65.5% 90.5 30s 661 398 14.80126 32 79 11.00000 17.76073 61.5% 120 35s 821 429 12.36160 30 46 11.00000 16.29925 48.2% 141 40s 1271 445 cutoff 25 11.00000 15.55943 41.4% 111 45s 1479 430 14.25060 33 75 11.00000 15.22585 38.4% 103 50s 1731 409 cutoff 31 11.00000 14.79476 34.5% 96.7 55s 2210 415 13.65585 48 71 11.00000 13.72797 24.8% 89.2 60s 2815 84 cutoff 36 11.00000 12.46181 13.3% 77.8 65s Cutting planes: Gomory: 9 Clique: 76 Zero half: 2 Explored 2949 nodes (222829 simplex iterations) in 65.22 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%