Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:12:40 2012 Optimize a model with 185 rows, 148 columns and 608 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 185 rows, 147 columns, 607 nonzeros Variable types: 0 continuous, 147 integer (146 binary) Found heuristic solution: objective 40.0000000 Root relaxation: objective 0.000000e+00, 82 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 54 40.00000 0.00000 100% - 0s H 0 0 31.0000000 0.00000 100% - 0s H 0 0 28.0000000 0.00000 100% - 0s 0 0 0.62593 0 55 28.00000 0.62593 97.8% - 0s 0 0 1.08333 0 56 28.00000 1.08333 96.1% - 0s H 0 0 20.0000000 1.08333 94.6% - 0s H 0 0 19.0000000 1.08333 94.3% - 0s 0 0 1.11702 0 58 19.00000 1.11702 94.1% - 0s 0 0 1.11702 0 59 19.00000 1.11702 94.1% - 0s 0 0 1.11702 0 58 19.00000 1.11702 94.1% - 0s 0 2 1.20909 0 58 19.00000 1.20909 93.6% - 0s * 14 13 9 15.0000000 4.31206 71.3% 39.4 0s * 44 20 11 14.0000000 5.33188 61.9% 28.5 0s * 48 16 10 13.0000000 5.33188 59.0% 26.7 0s Cutting planes: Gomory: 2 Mod-K: 2 Explored 142 nodes (3606 simplex iterations) in 0.15 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.300000000000e+01, best bound 1.300000000000e+01, gap 0.0%