Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:56 2012 Optimize a model with 597 rows, 107 columns and 1194 nonzeros Presolve removed 231 rows and 0 columns Presolve time: 0.00s Presolved: 366 rows, 107 columns, 944 nonzeros Variable types: 0 continuous, 107 integer (107 binary) Found heuristic solution: objective 26.0000000 Root relaxation: objective 3.707171e+01, 241 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 37.07171 0 102 26.00000 37.07171 42.6% - 0s H 0 0 29.0000000 37.07171 27.8% - 0s 0 0 36.47993 0 104 29.00000 36.47993 25.8% - 0s H 0 0 30.0000000 36.47993 21.6% - 0s 0 0 36.25705 0 102 30.00000 36.25705 20.9% - 0s 0 0 36.09313 0 104 30.00000 36.09313 20.3% - 0s 0 0 35.92893 0 102 30.00000 35.92893 19.8% - 0s 0 0 35.77539 0 103 30.00000 35.77539 19.3% - 0s 0 0 35.65361 0 102 30.00000 35.65361 18.8% - 0s 0 0 35.57307 0 102 30.00000 35.57307 18.6% - 0s 0 0 35.43552 0 102 30.00000 35.43552 18.1% - 0s 0 0 35.38070 0 101 30.00000 35.38070 17.9% - 0s 0 0 35.33394 0 103 30.00000 35.33394 17.8% - 0s 0 0 35.26481 0 103 30.00000 35.26481 17.5% - 0s 0 0 35.26281 0 104 30.00000 35.26281 17.5% - 0s 0 0 35.26281 0 103 30.00000 35.26281 17.5% - 0s 0 2 35.26281 0 102 30.00000 35.26281 17.5% - 0s * 146 28 14 31.0000000 33.94545 9.50% 29.9 0s Cutting planes: Clique: 3 Zero half: 56 Explored 248 nodes (7623 simplex iterations) in 0.34 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.100000000000e+01, best bound 3.100000000000e+01, gap 0.0%