Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:21:29 2012 Optimize a model with 463 rows, 445 columns and 1600 nonzeros Presolve removed 0 rows and 28 columns Presolve time: 0.00s Presolved: 463 rows, 417 columns, 1572 nonzeros Variable types: 0 continuous, 417 integer (416 binary) Found heuristic solution: objective 82.0000000 Root relaxation: objective 0.000000e+00, 256 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 0 175 82.00000 0.00000 100% - 0s H 0 0 75.0000000 0.00000 100% - 0s H 0 0 69.0000000 0.00000 100% - 0s H 0 0 64.0000000 0.00000 100% - 0s 0 0 0.26328 0 177 64.00000 0.26328 100% - 0s H 0 0 52.0000000 0.26328 99.5% - 0s 0 0 0.91650 0 181 52.00000 0.91650 98.2% - 0s H 0 0 49.0000000 0.91650 98.1% - 0s H 0 0 45.0000000 0.91650 98.0% - 0s 0 0 0.91682 0 185 45.00000 0.91682 98.0% - 0s 0 0 0.91682 0 185 45.00000 0.91682 98.0% - 0s H 0 0 42.0000000 0.91682 97.8% - 0s H 0 0 38.0000000 0.91682 97.6% - 0s 0 2 0.92253 0 185 38.00000 0.92253 97.6% - 0s H 54 54 19.0000000 1.79702 90.5% 26.0 0s * 56 32 31 17.0000000 1.79702 89.4% 26.2 0s H 81 44 16.0000000 1.83464 88.5% 28.7 0s H 163 72 15.0000000 4.61905 69.2% 32.9 0s * 180 55 14 14.0000000 4.88571 65.1% 32.6 0s Cutting planes: Gomory: 3 Mod-K: 2 Explored 422 nodes (15434 simplex iterations) in 0.65 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.400000000000e+01, best bound 1.400000000000e+01, gap 0.0%