Build (method = -2) #dp: 179 Step-3' Graph: 32 vertices and 87 arcs (0.00s) Step-4' Graph: 5 vertices and 33 arcs (0.00s) #V4/#V3 = 0.16 #A4/#A3 = 0.38 Ready! (0.00s) Optimize a model with 15 rows, 34 columns and 98 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.00s Presolved: 13 rows, 32 columns, 94 nonzeros Variable types: 0 continuous, 32 integer (3 binary) Found heuristic solution: objective 98.0000000 Found heuristic solution: objective 95.0000000 Optimize a model with 13 rows, 32 columns and 94 nonzeros Presolved: 13 rows, 32 columns, 94 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.300e+01 Factor NZ : 9.100e+01 Factor Ops : 8.190e+02 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.99330202e+02 -2.64333794e+02 6.41e+01 3.68e-02 1.98e+01 0s 1 7.02547342e+01 -1.16602094e+02 5.66e-01 2.22e-16 2.69e+00 0s 2 4.39315919e+01 5.67242271e+00 3.40e-03 2.22e-16 5.29e-01 0s 3 3.33969552e+01 3.13220716e+01 1.78e-14 4.44e-16 2.84e-02 0s 4 3.33334294e+01 3.33313233e+01 5.83e-15 4.44e-16 2.89e-05 0s 5 3.33333333e+01 3.33333333e+01 1.22e-14 2.22e-16 2.89e-11 0s Barrier solved model in 5 iterations and 0.00 seconds Optimal objective 3.33333333e+01 Root relaxation: objective 3.333333e+01, 26 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 33.33333 0 3 95.00000 33.33333 64.9% - 0s H 0 0 34.0000000 33.33333 1.96% - 0s Explored 0 nodes (32 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 3.400000000000e+01, best bound 3.400000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 34 Solution: 4 x [3, 8, 10] 1 x [4, 5, 9] 10 x [2, 4, 9] 5 x [3, 3, 7] 12 x [1, 6, 8] 1 x [4, 6, 7] 1 x [4]