Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:54:41 2012 Optimize a model with 283 rows, 195 columns and 900 nonzeros Presolve time: 0.00s Presolved: 283 rows, 195 columns, 900 nonzeros Variable types: 0 continuous, 195 integer (195 binary) Found heuristic solution: objective 63.0000000 Root relaxation: objective 0.000000e+00, 77 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 54 63.00000 0.00000 100% - 0s H 0 0 54.0000000 0.00000 100% - 0s 0 0 0.81250 0 56 54.00000 0.81250 98.5% - 0s H 0 0 52.0000000 0.81250 98.4% - 0s 0 0 0.85417 0 56 52.00000 0.85417 98.4% - 0s 0 0 0.87500 0 56 52.00000 0.87500 98.3% - 0s 0 0 0.93611 0 61 52.00000 0.93611 98.2% - 0s 0 0 0.98810 0 58 52.00000 0.98810 98.1% - 0s H 0 0 50.0000000 0.98810 98.0% - 0s 0 0 1.02083 0 56 50.00000 1.02083 98.0% - 0s 0 0 1.02083 0 56 50.00000 1.02083 98.0% - 0s 0 0 1.02083 0 56 50.00000 1.02083 98.0% - 0s H 0 0 47.0000000 1.02083 97.8% - 0s 0 2 1.04640 0 56 47.00000 1.04640 97.8% - 0s * 31 30 20 40.0000000 6.52500 83.7% 29.3 0s * 62 42 19 35.0000000 7.08929 79.7% 22.4 0s * 64 36 21 34.0000000 7.08929 79.1% 21.9 0s * 680 177 33 33.0000000 20.71429 37.2% 17.6 0s * 2966 10 32 32.0000000 30.23077 5.53% 19.6 1s Explored 2977 nodes (58432 simplex iterations) in 1.98 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%