
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 06:17:43 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4372.50.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/grafo4372.50.lp
Reading time = 0.30 seconds
: 160198 rows, 3363 columns, 483672 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 160198 rows, 3363 columns and 483672 nonzeros
Model fingerprint: 0xd7893896
Variable types: 58 continuous, 3305 integer (3305 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, 6e+01]
Presolve removed 36902 rows and 21 columns
Presolve time: 1.35s
Presolved: 123296 rows, 3342 columns, 373640 nonzeros
Variable types: 0 continuous, 3342 integer (3284 binary)
Root relaxation presolved: 3330 rows, 126626 columns, 376982 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   12469    5.5959637e+01   0.000000e+00   6.823141e+05      5s
   27011    5.4911416e+01   0.000000e+00   4.133564e+04     10s
   38711    5.4903873e+01   0.000000e+00   2.182610e+04     15s
   50411    5.4901787e+01   0.000000e+00   7.856267e+03     20s
   61643    5.4901437e+01   0.000000e+00   2.522724e+02     25s
   64113    5.5000000e+01   0.000000e+00   0.000000e+00     26s
   64113    5.5000000e+01   0.000000e+00   0.000000e+00     26s
   64113    5.5000000e+01   0.000000e+00   0.000000e+00     26s

Root relaxation: objective 5.500000e+01, 64113 iterations, 24.48 seconds (15.80 work units)
Total elapsed time = 49.50s (DegenMoves)

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

     0     0   55.00000    0  739          -   55.00000      -     -   50s
H    0     0                       7.0000000   55.00000   686%     -   50s

Explored 1 nodes (78018 simplex iterations) in 50.10 seconds (36.59 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 5.500000000000e+01, gap 685.7143%

Wrote result file './lp_solutions/grafo4372.50.sol'

