Build (method = -2) #dp: 127489 Step-3' Graph: 8719 vertices and 26150 arcs (1.41s) Step-4' Graph: 7114 vertices and 22940 arcs (1.46s) #V4/#V3 = 0.82 #A4/#A3 = 0.88 Ready! (1.46s) Optimize a model with 7149 rows, 22941 columns and 54599 nonzeros Presolve removed 315 rows and 560 columns Presolve time: 0.26s Presolved: 6834 rows, 22381 columns, 54426 nonzeros Variable types: 0 continuous, 22381 integer (0 binary) Optimize a model with 6834 rows, 22381 columns and 54426 nonzeros Presolved: 6834 rows, 22381 columns, 54426 nonzeros Root barrier log... Ordering time: 0.17s Barrier statistics: AA' NZ : 3.864e+04 Factor NZ : 1.331e+06 (roughly 20 MBytes of memory) Factor Ops : 7.587e+08 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.46983497e+05 -1.35614868e+07 5.93e+07 1.23e-02 8.71e+03 1s 1 1.95123192e+04 -1.05618075e+07 5.13e+06 5.54e-02 9.35e+02 1s 2 6.71882620e+03 -4.43272702e+06 8.90e+05 1.67e-02 1.99e+02 1s 3 4.33249160e+03 -2.54999670e+06 3.55e+05 8.17e-03 9.30e+01 1s 4 2.94946370e+03 -9.20326026e+05 1.07e+05 2.04e-03 3.30e+01 1s 5 2.01661443e+03 -1.19047622e+05 1.01e+04 1.95e-14 3.90e+00 2s 6 1.83236306e+03 -2.24426207e+04 2.90e+02 1.24e-14 5.69e-01 2s 7 1.72690808e+03 -8.17446348e+03 2.98e-11 4.88e-15 2.21e-01 2s 8 1.60593509e+03 -5.20237260e+03 6.73e-11 2.55e-15 1.52e-01 2s 9 1.54279618e+03 -3.94597367e+03 5.10e-11 2.11e-15 1.23e-01 3s 10 1.42772562e+03 -2.70398250e+03 6.29e-11 1.55e-15 9.23e-02 3s 11 1.25045600e+03 -2.15207976e+03 4.62e-11 1.33e-15 7.60e-02 3s 12 1.03350390e+03 -1.70323775e+03 2.71e-11 1.11e-15 6.11e-02 3s 13 9.66467341e+02 -1.29516550e+03 2.57e-11 8.88e-16 5.05e-02 4s 14 9.35915896e+02 -1.20171874e+03 2.55e-11 8.88e-16 4.78e-02 4s 15 7.58945635e+02 -8.77708530e+02 9.44e-12 6.32e-16 3.66e-02 4s 16 6.37959399e+02 -4.23800309e+02 6.88e-12 5.46e-16 2.37e-02 4s 17 5.62771412e+02 -1.69848165e+02 3.95e-12 3.38e-16 1.64e-02 5s 18 5.07148125e+02 1.22533319e+02 9.98e-12 2.22e-16 8.59e-03 5s 19 4.89215903e+02 1.85416802e+02 1.13e-11 3.33e-16 6.79e-03 5s 20 4.56422579e+02 3.23706150e+02 8.07e-12 3.33e-16 2.97e-03 5s 21 4.36933234e+02 3.71281641e+02 2.97e-11 2.50e-16 1.47e-03 6s 22 4.32625359e+02 3.93874345e+02 3.20e-11 2.35e-16 8.66e-04 6s 23 4.28447178e+02 4.03993732e+02 2.90e-11 1.98e-16 5.46e-04 6s 24 4.24391166e+02 4.07299350e+02 1.29e-11 2.51e-16 3.82e-04 6s 25 4.22900169e+02 4.09251581e+02 8.53e-12 2.21e-16 3.05e-04 7s 26 4.20661162e+02 4.12318932e+02 3.80e-12 1.98e-16 1.86e-04 7s 27 4.20203814e+02 4.13639246e+02 7.77e-12 2.01e-16 1.47e-04 7s 28 4.18960396e+02 4.14334640e+02 6.13e-11 2.22e-16 1.03e-04 7s 29 4.18186278e+02 4.15109355e+02 2.79e-11 3.33e-16 6.87e-05 8s 30 4.17812598e+02 4.16475307e+02 1.92e-11 2.67e-16 2.99e-05 8s 31 4.17583233e+02 4.16881396e+02 4.30e-11 2.24e-16 1.57e-05 8s 32 4.17400637e+02 4.17058120e+02 1.27e-11 3.33e-16 7.65e-06 8s 33 4.17331760e+02 4.17191183e+02 2.09e-11 2.22e-16 3.14e-06 8s 34 4.17313722e+02 4.17233001e+02 2.03e-11 2.73e-16 1.80e-06 9s 35 4.17264253e+02 4.17256098e+02 1.33e-11 2.22e-16 1.82e-07 9s 36 4.17263001e+02 4.17262993e+02 2.17e-11 2.86e-16 1.88e-10 9s 37 4.17263000e+02 4.17263000e+02 2.62e-12 2.37e-16 1.88e-13 9s Barrier solved model in 37 iterations and 9.40 seconds Optimal objective 4.17263000e+02 Root crossover log... 833 DPushes remaining with DInf 0.0000000e+00 9s 0 DPushes remaining with DInf 6.6678010e-01 9s 7065 PPushes remaining with PInf 0.0000000e+00 9s 0 PPushes remaining with PInf 0.0000000e+00 10s Push phase complete: Pinf 0.0000000e+00, Dinf 6.6678010e-01 10s Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 7900 4.1726300e+02 0.000000e+00 0.000000e+00 10s 7900 4.1726300e+02 0.000000e+00 0.000000e+00 10s Root relaxation: objective 4.172630e+02, 7900 iterations, 10.02 seconds Total elapsed time = 19.17s Total elapsed time = 24.72s Total elapsed time = 30.73s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 417.26300 0 248 - 417.26300 - - 37s H 0 0 418.0000000 417.26300 0.18% - 38s Explored 0 nodes (46038 simplex iterations) in 38.32 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 4.180000000000e+02, best bound 4.180000000000e+02, gap 0.0% Preprocessing time: 1.57 seconds Gurobi run time: 38.32 seconds Total run time: 39.89 seconds Objective: 418 Solution: 39 x [1, 2, 4, 5, 8, 20, 35] 5 x [1, 2, 6, 7, 19, 20, 21, 29] 7 x [1, 2, 6, 7, 20, 25, 26, 28, 30] 16 x [1, 2, 6, 7, 20, 26, 28, 29, 33, 34] 3 x [1, 2, 6, 7, 20, 26, 28, 30, 31, 34] 15 x [1, 2, 6, 7, 20, 26, 28, 30, 32, 33] 6 x [1, 2, 11, 15, 20, 22, 23, 25, 28, 33, 34] 5 x [1, 2, 12, 17, 20, 22, 23, 26, 27, 30, 34] 31 x [1, 3, 9, 16, 20, 22, 23, 25, 28, 33, 34] 13 x [1, 4, 7, 12, 13, 17, 20, 35] 18 x [1, 4, 11, 15, 16, 19, 20, 21, 31] 10 x [1, 4, 11, 15, 16, 20, 21, 23, 26] 14 x [1, 6, 9, 13, 15, 20, 21, 22, 33] 30 x [1, 6, 9, 13, 15, 20, 27, 28, 30, 34] 39 x [1, 6, 9, 13, 15, 22, 25, 26, 30, 34] 3 x [1, 6, 12, 14, 20, 21, 22, 25, 26, 30, 34] 1 x [1, 6, 13, 15, 20, 21, 22, 33] 3 x [1, 7, 12, 16, 20, 21, 24, 27, 28, 29, 31, 34] 12 x [1, 7, 13, 15, 18, 19, 20, 21, 28, 35] 17 x [2, 4, 6, 7, 11, 12, 32] 3 x [2, 4, 7, 11, 12, 14, 20] 1 x [3, 4, 11, 18, 19, 20, 21, 28, 35] 8 x [3, 5, 7, 11, 12, 13, 20, 35] 4 x [3, 6, 10, 11, 12, 13, 14] 12 x [3, 6, 10, 16, 17, 18, 20, 21, 32] 5 x [3, 10, 11, 12, 14, 19, 20, 21, 28, 35] 1 x [3, 10, 16, 20, 21, 25, 34] 73 x [4, 6, 8, 17, 20, 22, 23, 26, 27, 30, 34] 16 x [4, 6, 13, 14, 16, 20, 21, 22, 27, 33] 3 x [5, 7, 11, 14, 16, 20, 21, 22, 27, 33] 3 x [5, 11, 12, 13, 17, 20, 21, 22, 23, 28, 35] 1 x [5, 11, 12, 17, 19, 20, 22, 23, 27, 30, 34] 1 x [5, 11, 12, 17, 19, 20, 22, 23, 27, 34]