Build (method = -2) #dp: 386 Step-3' Graph: 37 vertices and 174 arcs (0.00s) Step-4' Graph: 22 vertices and 144 arcs (0.00s) #V4/#V3 = 0.59 #A4/#A3 = 0.83 Ready! (0.00s) Optimize a model with 59 rows, 145 columns and 396 nonzeros Presolve removed 27 rows and 28 columns Presolve time: 0.00s Presolved: 32 rows, 117 columns, 302 nonzeros Variable types: 0 continuous, 117 integer (66 binary) Found heuristic solution: objective 38.0000000 Found heuristic solution: objective 37.0000000 Found heuristic solution: objective 35.0000000 Optimize a model with 32 rows, 117 columns and 302 nonzeros Presolve removed 1 rows and 1 columns Presolved: 31 rows, 116 columns, 300 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.410e+02 Factor NZ : 3.700e+02 Factor Ops : 5.628e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.03439225e+02 -2.40978598e+02 1.66e+02 1.50e-01 5.53e+00 0s 1 6.92353145e+01 -6.12238393e+01 2.00e+01 3.89e-16 8.87e-01 0s 2 3.87828937e+01 1.60393489e+01 9.00e-01 2.78e-16 1.04e-01 0s 3 3.13533710e+01 2.43524553e+01 1.84e-02 2.22e-16 2.98e-02 0s 4 2.96982345e+01 2.83265772e+01 8.69e-04 2.22e-16 5.82e-03 0s 5 2.93900114e+01 2.91662415e+01 8.23e-05 2.27e-16 9.49e-04 0s 6 2.93338030e+01 2.93324543e+01 4.44e-15 4.44e-16 5.72e-06 0s 7 2.93333333e+01 2.93333333e+01 1.11e-14 2.34e-16 6.24e-12 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 2.93333333e+01 Root relaxation: objective 2.933333e+01, 21 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 29.33333 0 3 35.00000 29.33333 16.2% - 0s H 0 0 30.0000000 29.33333 2.22% - 0s Explored 0 nodes (27 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 3.000000000000e+01, best bound 3.000000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.01 seconds Objective: 30 Solution: 1 x [37] 2 x [36] 1 x [35] 1 x [34] 1 x [33] 2 x [32] 2 x [31] 2 x [2, 30] 1 x [1, 29] 1 x [1, 28] 1 x [6, 27] 1 x [5, 26] 1 x [3, 25] 1 x [8, 24] 1 x [10, 23] 1 x [11, 22] 1 x [9, 21] 2 x [4, 20] 1 x [14, 19] 1 x [15, 18] 1 x [13, 18] 1 x [12, 17] 1 x [16, 16] 1 x [3, 4, 7] 1 x [4]