Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:31:43 2012 Optimize a model with 361 rows, 257 columns and 1157 nonzeros Presolve time: 0.00s Presolved: 361 rows, 257 columns, 1157 nonzeros Variable types: 0 continuous, 257 integer (257 binary) Found heuristic solution: objective 86.0000000 Root relaxation: objective 0.000000e+00, 110 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 77 86.00000 0.00000 100% - 0s H 0 0 75.0000000 0.00000 100% - 0s H 0 0 73.0000000 0.00000 100% - 0s H 0 0 58.0000000 0.00000 100% - 0s 0 0 0.67097 0 82 58.00000 0.67097 98.8% - 0s 0 0 0.85499 0 84 58.00000 0.85499 98.5% - 0s 0 0 0.85793 0 86 58.00000 0.85793 98.5% - 0s 0 0 0.88088 0 90 58.00000 0.88088 98.5% - 0s 0 0 0.90780 0 94 58.00000 0.90780 98.4% - 0s 0 0 0.91590 0 84 58.00000 0.91590 98.4% - 0s 0 0 0.92235 0 97 58.00000 0.92235 98.4% - 0s 0 2 0.92446 0 97 58.00000 0.92446 98.4% - 0s * 42 32 26 42.0000000 4.33333 89.7% 29.0 0s H 54 36 40.0000000 4.33527 89.2% 29.2 0s * 315 189 17 38.0000000 11.32339 70.2% 23.5 0s * 1064 391 28 37.0000000 15.37061 58.5% 26.3 1s 5467 613 cutoff 23 37.00000 26.82353 27.5% 23.4 5s Explored 9851 nodes (216060 simplex iterations) in 8.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.700000000000e+01, best bound 3.700000000000e+01, gap 0.0%