Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:53:04 2012 Optimize a model with 155 rows, 95 columns and 480 nonzeros Presolve time: 0.00s Presolved: 155 rows, 95 columns, 480 nonzeros Variable types: 0 continuous, 95 integer (95 binary) Found heuristic solution: objective 39.0000000 Root relaxation: objective 0.000000e+00, 28 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 18 39.00000 0.00000 100% - 0s 0 0 0.71429 0 20 39.00000 0.71429 98.2% - 0s 0 0 1.07143 0 21 39.00000 1.07143 97.3% - 0s 0 0 1.07143 0 20 39.00000 1.07143 97.3% - 0s 0 0 1.07429 0 27 39.00000 1.07429 97.2% - 0s 0 0 1.14286 0 20 39.00000 1.14286 97.1% - 0s 0 0 1.14286 0 20 39.00000 1.14286 97.1% - 0s 0 0 1.14286 0 20 39.00000 1.14286 97.1% - 0s H 0 0 37.0000000 1.14286 96.9% - 0s H 0 0 34.0000000 1.14286 96.6% - 0s H 0 0 32.0000000 1.14286 96.4% - 0s 0 2 1.14286 0 20 32.00000 1.14286 96.4% - 0s * 25 10 10 31.0000000 7.57143 75.6% 19.0 0s * 136 55 12 30.0000000 13.52381 54.9% 13.5 0s * 146 57 11 29.0000000 13.71429 52.7% 13.1 0s * 210 56 12 28.0000000 15.93407 43.1% 12.2 0s * 249 38 8 27.0000000 16.93506 37.3% 11.9 0s Cutting planes: Gomory: 1 Zero half: 7 Explored 344 nodes (3908 simplex iterations) in 0.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.700000000000e+01, best bound 2.700000000000e+01, gap 0.0%