Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:56:02 2012 Optimize a model with 707 rows, 121 columns and 1414 nonzeros Presolve removed 255 rows and 0 columns Presolve time: 0.00s Presolved: 452 rows, 121 columns, 1129 nonzeros Variable types: 0 continuous, 121 integer (121 binary) Found heuristic solution: objective 26.0000000 Root relaxation: objective 4.143416e+01, 312 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 41.43416 0 117 26.00000 41.43416 59.4% - 0s H 0 0 27.0000000 41.43416 53.5% - 0s 0 0 40.90588 0 118 27.00000 40.90588 51.5% - 0s H 0 0 30.0000000 40.90588 36.4% - 0s 0 0 40.47810 0 116 30.00000 40.47810 34.9% - 0s 0 0 40.16927 0 117 30.00000 40.16927 33.9% - 0s 0 0 40.01615 0 119 30.00000 40.01615 33.4% - 0s 0 0 39.88737 0 118 30.00000 39.88737 33.0% - 0s 0 0 39.78869 0 119 30.00000 39.78869 32.6% - 0s 0 0 39.75553 0 118 30.00000 39.75553 32.5% - 0s 0 0 39.73222 0 120 30.00000 39.73222 32.4% - 0s 0 0 39.66639 0 120 30.00000 39.66639 32.2% - 0s 0 0 39.61471 0 120 30.00000 39.61471 32.0% - 0s 0 0 39.59539 0 120 30.00000 39.59539 32.0% - 0s 0 0 39.55072 0 118 30.00000 39.55072 31.8% - 0s 0 0 39.50418 0 116 30.00000 39.50418 31.7% - 0s 0 0 39.45493 0 120 30.00000 39.45493 31.5% - 0s 0 0 39.43513 0 120 30.00000 39.43513 31.5% - 0s 0 0 39.43342 0 119 30.00000 39.43342 31.4% - 0s 0 0 39.42966 0 117 30.00000 39.42966 31.4% - 0s 0 0 39.41206 0 118 30.00000 39.41206 31.4% - 0s 0 0 39.40199 0 119 30.00000 39.40199 31.3% - 0s 0 0 39.40199 0 118 30.00000 39.40199 31.3% - 0s 0 2 39.40199 0 118 30.00000 39.40199 31.3% - 0s H 19 13 31.0000000 39.39386 27.1% 28.8 0s * 149 66 19 32.0000000 38.56565 20.5% 32.8 0s 612 213 36.00000 7 118 32.00000 36.89474 15.3% 27.8 5s 3782 272 33.00000 22 65 32.00000 34.00000 6.25% 21.7 10s Cutting planes: Gomory: 2 Clique: 1 Zero half: 52 Explored 4367 nodes (90359 simplex iterations) in 10.38 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.200000000000e+01, best bound 3.200000000000e+01, gap 0.0%