Build (method = -2) #dp: 2261 Step-3' Graph: 215 vertices and 861 arcs (0.01s) Step-4' Graph: 168 vertices and 767 arcs (0.01s) #V4/#V3 = 0.78 #A4/#A3 = 0.89 Ready! (0.01s) Optimize a model with 178 rows, 768 columns and 1975 nonzeros Presolve removed 37 rows and 64 columns Presolve time: 0.01s Presolved: 141 rows, 704 columns, 1892 nonzeros Variable types: 0 continuous, 704 integer (0 binary) Found heuristic solution: objective 96.0000000 Optimize a model with 141 rows, 704 columns and 1892 nonzeros Presolved: 141 rows, 704 columns, 1892 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.050e+03 Factor NZ : 3.551e+03 Factor Ops : 1.046e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.10563853e+03 -2.09677715e+04 1.37e+04 2.22e-16 1.06e+02 0s 1 3.37184299e+02 -9.99030887e+03 2.23e+03 6.66e-16 2.01e+01 0s 2 1.61861541e+02 -3.38416144e+03 4.22e+02 1.89e-15 4.50e+00 0s 3 1.11820988e+02 -8.76887647e+02 2.76e+01 1.18e-14 7.87e-01 0s 4 9.38079757e+01 -2.19927640e+02 8.23e+00 2.89e-15 2.32e-01 0s 5 6.36324271e+01 -1.93004328e+02 3.70e+00 2.55e-15 1.86e-01 0s 6 6.14935203e+01 -1.26998417e+02 2.98e+00 1.55e-15 1.36e-01 0s 7 5.53165462e+01 -9.06547695e+01 2.54e+00 7.98e-16 1.05e-01 0s 8 3.36854139e+01 -4.05776736e+01 1.30e+00 7.25e-16 5.35e-02 0s 9 2.22590033e+01 -1.87337755e+01 7.22e-01 5.94e-16 2.95e-02 0s 10 2.22000755e+01 -8.60863954e+00 6.17e-01 5.64e-16 2.22e-02 0s 11 1.56300437e+01 4.60654668e+00 1.84e-01 5.77e-16 7.88e-03 0s 12 1.37520143e+01 1.00693510e+01 2.02e-02 5.38e-16 2.60e-03 0s 13 1.28379972e+01 1.12961435e+01 5.41e-03 5.56e-16 1.09e-03 0s 14 1.26423861e+01 1.19908805e+01 2.23e-03 5.99e-16 4.60e-04 0s 15 1.25746262e+01 1.22330254e+01 1.39e-03 6.13e-16 2.41e-04 0s 16 1.25401689e+01 1.24548829e+01 6.86e-04 7.15e-16 6.03e-05 0s 17 1.25004883e+01 1.24988520e+01 1.18e-05 5.27e-16 1.16e-06 0s 18 1.25000005e+01 1.24999989e+01 1.55e-12 5.39e-16 1.16e-09 0s 19 1.25000000e+01 1.25000000e+01 1.92e-12 4.89e-16 1.23e-15 0s Barrier solved model in 19 iterations and 0.01 seconds Optimal objective 1.25000000e+01 Root relaxation: objective 1.250000e+01, 434 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 12.50000 0 30 96.00000 12.50000 87.0% - 0s H 0 0 14.0000000 12.50000 10.7% - 0s H 0 0 13.0000000 12.50000 3.85% - 0s Explored 0 nodes (750 simplex iterations) in 0.06 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.300000000000e+01, best bound 1.300000000000e+01, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.06 seconds Total run time: 0.08 seconds Objective: 13 Solution: 6 x [1, 1, 1, 1, 3, 8, 9, 10] 1 x [1, 6, 6, 6, 7, 8, 8] 3 x [1, 3, 7, 8, 8, 8, 8, 8] 1 x [2, 2, 2, 3, 4, 9] 1 x [3, 3, 4, 4, 4, 5, 5] 1 x [3, 4, 5, 5, 5, 6, 6, 9]