Gurobi 5.0.1 (linux64) logging started Mon Nov 19 09:09:47 2012 Optimize a model with 6527 rows, 162 columns and 13054 nonzeros Presolve removed 4704 rows and 0 columns Presolve time: 0.28s Presolved: 1823 rows, 162 columns, 13431 nonzeros Variable types: 0 continuous, 162 integer (162 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.986040e+01, 837 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 19.86040 0 162 7.00000 19.86040 184% - 0s H 0 0 8.0000000 19.86040 148% - 0s 0 0 19.42388 0 162 8.00000 19.42388 143% - 0s 0 0 19.35551 0 161 8.00000 19.35551 142% - 0s 0 0 19.32139 0 162 8.00000 19.32139 142% - 1s H 0 0 9.0000000 19.32139 115% - 1s 0 0 19.30270 0 162 9.00000 19.30270 114% - 1s 0 0 19.24524 0 162 9.00000 19.24524 114% - 1s 0 0 19.23709 0 162 9.00000 19.23709 114% - 1s 0 0 19.23014 0 161 9.00000 19.23014 114% - 2s 0 0 19.22476 0 161 9.00000 19.22476 114% - 2s H 0 0 10.0000000 19.22476 92.2% - 2s 0 0 19.22163 0 162 10.00000 19.22163 92.2% - 2s 0 0 19.22116 0 162 10.00000 19.22116 92.2% - 2s 0 0 19.22112 0 162 10.00000 19.22112 92.2% - 2s 0 0 19.22111 0 162 10.00000 19.22111 92.2% - 3s 0 2 19.21570 0 162 10.00000 19.21570 92.2% - 3s 68 70 12.02557 68 89 10.00000 19.21512 92.2% 131 5s 526 324 11.43476 29 54 10.00000 17.37571 73.8% 95.2 10s 606 369 15.51899 2 162 10.00000 16.90326 69.0% 92.8 15s 637 392 16.90326 25 146 10.00000 16.90326 69.0% 112 20s 800 438 13.90340 29 74 10.00000 15.74427 57.4% 140 25s 1516 469 11.02895 21 38 10.00000 14.53222 45.3% 96.5 30s 1846 459 12.39091 28 42 10.00000 14.16351 41.6% 87.6 35s 2504 554 cutoff 30 10.00000 13.39363 33.9% 77.0 40s 3222 414 12.09762 41 59 10.00000 12.19656 22.0% 70.2 45s Cutting planes: Clique: 49 Explored 3947 nodes (244613 simplex iterations) in 48.08 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%