Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:56:58 2012 Optimize a model with 291 rows, 194 columns and 919 nonzeros Presolve time: 0.00s Presolved: 291 rows, 194 columns, 919 nonzeros Variable types: 0 continuous, 194 integer (194 binary) Found heuristic solution: objective 63.0000000 Root relaxation: objective 0.000000e+00, 79 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 49 63.00000 0.00000 100% - 0s H 0 0 61.0000000 0.00000 100% - 0s H 0 0 54.0000000 0.00000 100% - 0s 0 0 0.72029 0 50 54.00000 0.72029 98.7% - 0s 0 0 1.21978 0 52 54.00000 1.21978 97.7% - 0s 0 0 1.29533 0 52 54.00000 1.29533 97.6% - 0s 0 0 1.29540 0 52 54.00000 1.29540 97.6% - 0s 0 0 1.29611 0 52 54.00000 1.29611 97.6% - 0s 0 2 1.37027 0 52 54.00000 1.37027 97.5% - 0s * 44 39 25 49.0000000 5.20833 89.4% 22.7 0s * 75 57 18 44.0000000 5.43478 87.6% 24.1 0s * 110 75 22 42.0000000 9.50000 77.4% 23.3 0s * 117 68 23 41.0000000 9.50000 76.8% 22.1 0s * 160 96 13 40.0000000 10.00000 75.0% 26.5 0s * 196 119 14 38.0000000 12.61111 66.8% 28.0 0s H 883 223 37.0000000 20.28571 45.2% 23.9 0s * 970 210 20 36.0000000 20.28571 43.7% 24.3 0s Cutting planes: Gomory: 2 Mod-K: 2 Explored 2714 nodes (54586 simplex iterations) in 1.99 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.600000000000e+01, best bound 3.600000000000e+01, gap 0.0%