Optimize a model with 42 rows, 861 columns and 1722 nonzeros Presolve time: 0.00s Presolved: 42 rows, 861 columns, 1722 nonzeros Iteration Objective Primal Inf. Dual Inf. Time 0 3.0000000e+01 8.100000e+01 0.000000e+00 0s 69 1.2145000e+03 0.000000e+00 0.000000e+00 0s Solved in 69 iterations and 0.00 seconds Optimal objective 1.214500000e+03 Optimize a model with 45 rows, 861 columns and 2326 nonzeros Iteration Objective Primal Inf. Dual Inf. Time 0 1.2145000e+03 3.000000e+00 0.000000e+00 0s 5 1.2435000e+03 0.000000e+00 0.000000e+00 0s Solved in 5 iterations and 0.00 seconds Optimal objective 1.243500000e+03 Optimize a model with 45 rows, 861 columns and 2326 nonzeros Presolve time: 0.00s Presolved: 45 rows, 861 columns, 2326 nonzeros Variable types: 0 continuous, 861 integer (861 binary) Found heuristic solution: objective 5673.0000000 Root relaxation: objective 1.243500e+03, 61 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1243.50000 0 6 5673.00000 1243.50000 78.1% - 0s H 0 0 1297.0000000 1243.50000 4.12% - 0s 0 0 1249.50000 0 6 1297.00000 1249.50000 3.66% - 0s 0 0 1249.50000 0 6 1297.00000 1249.50000 3.66% - 0s H 0 0 1286.0000000 1249.50000 2.84% - 0s * 0 0 0 1255.0000000 1255.00000 0.0% - 0s Cutting planes: Gomory: 2 Zero half: 2 Explored 0 nodes (136 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.255000000000e+03, best bound 1.255000000000e+03, gap 0.0% Optimize a model with 47 rows, 861 columns and 3070 nonzeros Presolve time: 0.00s Presolved: 47 rows, 861 columns, 3070 nonzeros MIP start did not produce a feasible solution Variable types: 0 continuous, 861 integer (861 binary) Found heuristic solution: objective 5673.0000000 Root relaxation: objective 1.258500e+03, 62 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1258.50000 0 6 5673.00000 1258.50000 77.8% - 0s Another try with MIP start H 0 0 1285.0000000 1258.50000 2.06% - 0s 0 0 1264.50000 0 6 1285.00000 1264.50000 1.60% - 0s 0 0 1264.50000 0 6 1285.00000 1264.50000 1.60% - 0s * 0 0 0 1273.0000000 1273.00000 0.0% - 0s Cutting planes: Gomory: 2 Zero half: 3 Explored 0 nodes (150 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.273000000000e+03, best bound 1.273000000000e+03, gap 0.0% Gurobi 5.0.1 (linux64) logging started Sun Nov 25 02:42:24 2012