Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:31:51 2012 Optimize a model with 335 rows, 244 columns and 1079 nonzeros Presolve time: 0.00s Presolved: 335 rows, 244 columns, 1079 nonzeros Variable types: 0 continuous, 244 integer (244 binary) Found heuristic solution: objective 73.0000000 Root relaxation: objective 0.000000e+00, 122 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 76 73.00000 0.00000 100% - 0s H 0 0 59.0000000 0.00000 100% - 0s 0 0 0.57812 0 77 59.00000 0.57812 99.0% - 0s H 0 0 53.0000000 0.57812 98.9% - 0s 0 0 1.02353 0 80 53.00000 1.02353 98.1% - 0s H 0 0 52.0000000 1.02353 98.0% - 0s 0 0 1.05438 0 80 52.00000 1.05438 98.0% - 0s 0 0 1.06675 0 81 52.00000 1.06675 97.9% - 0s 0 0 1.06675 0 81 52.00000 1.06675 97.9% - 0s H 0 0 51.0000000 1.06675 97.9% - 0s 0 2 1.11685 0 81 51.00000 1.11685 97.8% - 0s H 27 27 48.0000000 4.67171 90.3% 40.6 0s * 37 33 26 38.0000000 4.67171 87.7% 34.3 0s * 90 63 19 36.0000000 6.59211 81.7% 30.5 0s * 129 84 14 34.0000000 6.60190 80.6% 30.5 0s * 384 159 14 33.0000000 11.34574 65.6% 28.4 0s * 704 231 24 32.0000000 16.98229 46.9% 28.7 0s * 1224 142 25 31.0000000 20.00000 35.5% 26.1 1s Explored 2211 nodes (52451 simplex iterations) in 1.88 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%