Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:11:49 2012 Optimize a model with 153 rows, 128 columns and 508 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 153 rows, 127 columns, 507 nonzeros Variable types: 0 continuous, 127 integer (126 binary) Found heuristic solution: objective 32.0000000 Root relaxation: objective 0.000000e+00, 79 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 50 32.00000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s 0 0 0.50087 0 51 22.00000 0.50087 97.7% - 0s H 0 0 19.0000000 0.50087 97.4% - 0s 0 0 1.04113 0 54 19.00000 1.04113 94.5% - 0s 0 0 1.04749 0 54 19.00000 1.04749 94.5% - 0s 0 0 1.04749 0 54 19.00000 1.04749 94.5% - 0s H 0 0 18.0000000 1.04749 94.2% - 0s H 0 0 17.0000000 1.04749 93.8% - 0s H 0 0 16.0000000 1.04749 93.5% - 0s 0 2 1.09345 0 54 16.00000 1.09345 93.2% - 0s * 11 11 8 10.0000000 4.06182 59.4% 25.5 0s * 48 11 8 8.0000000 4.13131 48.4% 14.0 0s Cutting planes: Gomory: 3 Mod-K: 1 Explored 62 nodes (1128 simplex iterations) in 0.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%