Build (method = -2) #dp: 1119 Step-3' Graph: 61 vertices and 180 arcs (0.00s) Step-4' Graph: 23 vertices and 104 arcs (0.00s) #V4/#V3 = 0.38 #A4/#A3 = 0.58 Ready! (0.00s) Optimize a model with 32 rows, 105 columns and 278 nonzeros Presolve removed 4 rows and 7 columns Presolve time: 0.00s Presolved: 28 rows, 98 columns, 265 nonzeros Variable types: 0 continuous, 98 integer (0 binary) Found heuristic solution: objective 998.0000000 Found heuristic solution: objective 418.0000000 Optimize a model with 28 rows, 98 columns and 265 nonzeros Presolved: 28 rows, 98 columns, 265 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.380e+02 Factor NZ : 3.400e+02 Factor Ops : 5.074e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 4.24367850e+03 -9.98875905e+03 5.14e+03 1.11e-16 3.03e+02 0s 1 9.60153393e+02 -4.12552596e+03 3.71e+02 6.66e-16 3.83e+01 0s 2 4.45718322e+02 -2.11387864e+02 1.04e+01 1.67e-15 3.42e+00 0s 3 2.03728037e+02 3.24490059e+01 2.00e+00 7.22e-16 8.53e-01 0s 4 1.76754990e+02 1.46416345e+02 1.88e-01 6.79e-16 1.48e-01 0s 5 1.67783988e+02 1.64038081e+02 3.00e-02 6.87e-16 1.83e-02 0s 6 1.66750264e+02 1.66626823e+02 4.68e-13 7.43e-16 6.02e-04 0s 7 1.66666737e+02 1.66666244e+02 2.58e-13 4.44e-16 2.40e-06 0s 8 1.66666667e+02 1.66666666e+02 1.38e-13 1.13e-15 2.40e-09 0s Barrier solved model in 8 iterations and 0.00 seconds Optimal objective 1.66666667e+02 Root relaxation: objective 1.666667e+02, 67 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 166.66667 0 16 418.00000 166.66667 60.1% - 0s H 0 0 168.0000000 166.66667 0.79% - 0s H 0 0 167.0000000 166.66667 0.20% - 0s Explored 0 nodes (79 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.670000000000e+02, best bound 1.670000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 167 Solution: 1 x [1, 4, 5, 7, 9] 57 x [1, 4, 4, 5, 7, 9] 14 x [5, 7, 7, 8, 8, 9] 1 x [1, 8, 8, 8, 9] 55 x [1, 3, 3, 5, 7, 9] 2 x [1, 3, 6, 8, 8, 8] 2 x [1, 2, 3, 8, 8, 8] 28 x [3, 5, 7, 8, 8, 8] 7 x [1, 5, 7, 8, 8, 8]