Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:10 2012 Optimize a model with 469 rows, 97 columns and 938 nonzeros Presolve removed 151 rows and 0 columns Presolve time: 0.00s Presolved: 318 rows, 97 columns, 769 nonzeros Variable types: 0 continuous, 97 integer (97 binary) Found heuristic solution: objective 26.0000000 Root relaxation: objective 3.588000e+01, 195 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 35.88000 0 97 26.00000 35.88000 38.0% - 0s H 0 0 27.0000000 35.88000 32.9% - 0s 0 0 35.12770 0 96 27.00000 35.12770 30.1% - 0s H 0 0 28.0000000 35.12770 25.5% - 0s H 0 0 29.0000000 35.12770 21.1% - 0s 0 0 34.83612 0 97 29.00000 34.83612 20.1% - 0s 0 0 34.50000 0 96 29.00000 34.50000 19.0% - 0s 0 0 34.31707 0 94 29.00000 34.31707 18.3% - 0s 0 0 34.23454 0 97 29.00000 34.23454 18.1% - 0s 0 0 34.06238 0 96 29.00000 34.06238 17.5% - 0s 0 0 33.95023 0 95 29.00000 33.95023 17.1% - 0s 0 0 33.85864 0 97 29.00000 33.85864 16.8% - 0s 0 0 33.82210 0 97 29.00000 33.82210 16.6% - 0s 0 0 33.77903 0 97 29.00000 33.77903 16.5% - 0s 0 0 33.73805 0 97 29.00000 33.73805 16.3% - 0s 0 0 33.66372 0 97 29.00000 33.66372 16.1% - 0s 0 0 33.65452 0 97 29.00000 33.65452 16.1% - 0s 0 0 33.65452 0 97 29.00000 33.65452 16.1% - 0s 0 2 33.65188 0 97 29.00000 33.65188 16.0% - 0s * 10 5 5 30.0000000 33.64850 12.2% 31.8 0s Cutting planes: Clique: 1 Zero half: 67 Explored 111 nodes (3943 simplex iterations) in 0.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+01, best bound 3.000000000000e+01, gap 0.0%