
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:05:59 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3800.42.log"
Using license file /Users/sara/gurobi.lic
Academic license - for non-commercial use only - expires 2025-05-12

Gurobi Optimizer version 11.0.1 build v11.0.1rc0 (mac64[x86] - Darwin 21.6.0 21G651)
Copyright (c) 2024, Gurobi Optimization, LLC

Read LP format model from file ./lp_problems/grafo3800.42.lp
Reading time = 0.24 seconds
: 128023 rows, 2275 columns, 385931 nonzeros

CPU model: Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
Thread count: 4 physical cores, 8 logical processors, using up to 8 threads

Optimize a model with 128023 rows, 2275 columns and 385931 nonzeros
Model fingerprint: 0xaf1428b2
Variable types: 45 continuous, 2230 integer (2230 binary)
Coefficient statistics:
  Matrix range     [5e-01, 5e+01]
  Objective range  [1e+00, 1e+00]
  Bounds range     [1e+00, 1e+00]
  RHS range        [1e+00, 5e+01]
Presolve removed 47686 rows and 18 columns
Presolve time: 1.06s
Presolved: 80337 rows, 2257 columns, 243385 nonzeros
Variable types: 0 continuous, 2257 integer (2212 binary)
Root relaxation presolved: 2257 rows, 82594 columns, 245642 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17736    4.5702692e+01   0.000000e+00   5.097585e+04      5s
   36800    4.6000000e+01   0.000000e+00   0.000000e+00     10s
   36800    4.6000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 4.600000e+01, 36800 iterations, 8.45 seconds (5.51 work units)
Total elapsed time = 22.85s (DegenMoves)
Total elapsed time = 26.18s (DegenMoves)
Total elapsed time = 30.42s (DegenMoves)

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0   46.00000    0  604          -   46.00000      -     -   31s
H    0     0                       6.0000000   46.00000   667%     -   34s
     0     0   46.00000    0  868    6.00000   46.00000   667%     -   48s
H    0     0                      10.0000000   46.00000   360%     -   49s
     0     0          -    0        10.00000   46.00000   360%     -   50s

Cutting planes:
  Gomory: 4
  Cover: 3
  Clique: 19
  MIR: 62
  StrongCG: 1
  Zero half: 5
  RLT: 41
  BQP: 4

Explored 1 nodes (62975 simplex iterations) in 50.02 seconds (44.02 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 6 

Time limit reached
Best objective 1.000000000000e+01, best bound 4.600000000000e+01, gap 360.0000%

Wrote result file './lp_solutions/grafo3800.42.sol'

