Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:58:27 2012 Optimize a model with 3588 rows, 121 columns and 7176 nonzeros Presolve removed 2613 rows and 0 columns Presolve time: 0.12s Presolved: 975 rows, 121 columns, 6749 nonzeros Variable types: 0 continuous, 121 integer (121 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.655673e+01, 511 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16.55673 0 118 8.00000 16.55673 107% - 0s H 0 0 9.0000000 16.55673 84.0% - 0s 0 0 16.16996 0 118 9.00000 16.16996 79.7% - 0s 0 0 15.99867 0 119 9.00000 15.99867 77.8% - 0s 0 0 15.97764 0 120 9.00000 15.97764 77.5% - 0s 0 0 15.96946 0 121 9.00000 15.96946 77.4% - 0s 0 0 15.93624 0 121 9.00000 15.93624 77.1% - 1s 0 0 15.92602 0 121 9.00000 15.92602 77.0% - 1s 0 0 15.91900 0 121 9.00000 15.91900 76.9% - 1s 0 0 15.89527 0 121 9.00000 15.89527 76.6% - 1s H 0 0 10.0000000 15.89527 59.0% - 1s 0 0 15.88795 0 121 10.00000 15.88795 58.9% - 1s 0 0 15.88640 0 121 10.00000 15.88640 58.9% - 1s 0 0 15.88532 0 121 10.00000 15.88532 58.9% - 2s 0 0 15.88520 0 121 10.00000 15.88520 58.9% - 2s 0 0 15.88518 0 121 10.00000 15.88518 58.9% - 2s 0 0 15.88518 0 121 10.00000 15.88518 58.9% - 2s 0 2 15.88443 0 121 10.00000 15.88443 58.8% - 2s Cutting planes: Clique: 92 Explored 359 nodes (25451 simplex iterations) in 4.35 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%