Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:03 2012 Optimize a model with 412 rows, 93 columns and 824 nonzeros Presolve removed 135 rows and 0 columns Presolve time: 0.00s Presolved: 277 rows, 93 columns, 666 nonzeros Variable types: 0 continuous, 93 integer (93 binary) Found heuristic solution: objective 22.0000000 Root relaxation: objective 3.500000e+01, 147 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 35.00000 0 70 22.00000 35.00000 59.1% - 0s H 0 0 24.0000000 35.00000 45.8% - 0s 0 0 34.00000 0 90 24.00000 34.00000 41.7% - 0s H 0 0 26.0000000 34.00000 30.8% - 0s 0 0 33.55670 0 90 26.00000 33.55670 29.1% - 0s 0 0 33.22093 0 92 26.00000 33.22093 27.8% - 0s 0 0 33.06410 0 92 26.00000 33.06410 27.2% - 0s H 0 0 27.0000000 33.06410 22.5% - 0s 0 0 32.98110 0 93 27.00000 32.98110 22.2% - 0s H 0 0 28.0000000 32.98110 17.8% - 0s 0 0 32.92420 0 92 28.00000 32.92420 17.6% - 0s 0 0 32.82842 0 92 28.00000 32.82842 17.2% - 0s H 0 0 29.0000000 32.82842 13.2% - 0s 0 0 32.75024 0 93 29.00000 32.75024 12.9% - 0s 0 0 32.67390 0 91 29.00000 32.67390 12.7% - 0s 0 0 32.59057 0 92 29.00000 32.59057 12.4% - 0s 0 0 32.49345 0 90 29.00000 32.49345 12.0% - 0s 0 0 32.43181 0 91 29.00000 32.43181 11.8% - 0s 0 0 32.39777 0 93 29.00000 32.39777 11.7% - 0s 0 2 32.39541 0 93 29.00000 32.39541 11.7% - 0s Cutting planes: Zero half: 73 Explored 98 nodes (3432 simplex iterations) in 0.16 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.900000000000e+01, best bound 2.900000000000e+01, gap 0.0%