Optimize a model with 29 rows, 406 columns and 812 nonzeros Presolve time: 0.00s Presolved: 29 rows, 406 columns, 812 nonzeros Iteration Objective Primal Inf. Dual Inf. Time 0 6.8000000e+01 5.500000e+01 0.000000e+00 0s 49 1.5460000e+03 0.000000e+00 0.000000e+00 0s Solved in 49 iterations and 0.00 seconds Optimal objective 1.546000000e+03 Optimize a model with 32 rows, 406 columns and 1035 nonzeros Iteration Objective Primal Inf. Dual Inf. Time 0 1.5460000e+03 3.000000e+00 0.000000e+00 0s 9 1.5950000e+03 0.000000e+00 0.000000e+00 0s Solved in 9 iterations and 0.00 seconds Optimal objective 1.595000000e+03 Optimize a model with 34 rows, 406 columns and 1341 nonzeros Iteration Objective Primal Inf. Dual Inf. Time 0 1.5950000e+03 2.000000e+00 0.000000e+00 0s 3 1.6000000e+03 0.000000e+00 0.000000e+00 0s Solved in 3 iterations and 0.00 seconds Optimal objective 1.600000000e+03 Optimize a model with 34 rows, 406 columns and 1341 nonzeros Presolve time: 0.00s Presolved: 34 rows, 406 columns, 1341 nonzeros Variable types: 0 continuous, 406 integer (406 binary) Found heuristic solution: objective 3988.0000000 Root relaxation: objective 1.600000e+03, 49 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1600.00000 0 6 3988.00000 1600.00000 59.9% - 0s H 0 0 1708.0000000 1600.00000 6.32% - 0s 0 0 1605.50000 0 12 1708.00000 1605.50000 6.00% - 0s 0 0 1605.50000 0 6 1708.00000 1605.50000 6.00% - 0s 0 0 1605.50000 0 12 1708.00000 1605.50000 6.00% - 0s 0 0 1608.00000 0 16 1708.00000 1608.00000 5.85% - 0s 0 0 1608.66667 0 19 1708.00000 1608.66667 5.82% - 0s 0 0 1608.66667 0 20 1708.00000 1608.66667 5.82% - 0s 0 0 1608.66667 0 20 1708.00000 1608.66667 5.82% - 0s H 0 0 1609.0000000 1608.66667 0.02% - 0s Cutting planes: Gomory: 1 Zero half: 6 Explored 0 nodes (121 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.609000000000e+03, best bound 1.609000000000e+03, gap 0.0% Optimize a model with 36 rows, 406 columns and 1549 nonzeros Presolve time: 0.00s Presolved: 36 rows, 406 columns, 1549 nonzeros MIP start did not produce a feasible solution Variable types: 0 continuous, 406 integer (406 binary) Found heuristic solution: objective 3988.0000000 Root relaxation: objective 1.608000e+03, 51 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1608.00000 0 8 3988.00000 1608.00000 59.7% - 0s Another try with MIP start H 0 0 1711.0000000 1608.00000 6.02% - 0s * 0 0 0 1610.0000000 1610.00000 0.0% - 0s Cutting planes: Zero half: 2 Explored 0 nodes (52 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.610000000000e+03, best bound 1.610000000000e+03, gap 0.0% Gurobi 5.0.1 (linux64) logging started Sun Nov 25 02:42:23 2012