
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:55:48 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5228.43.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/grafo5228.43.lp
Reading time = 0.26 seconds
: 140263 rows, 2635 columns, 423194 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 140263 rows, 2635 columns and 423194 nonzeros
Model fingerprint: 0xd4f29a1f
Variable types: 51 continuous, 2584 integer (2584 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 56554 rows and 71 columns
Presolve time: 1.03s
Presolved: 83709 rows, 2564 columns, 253947 nonzeros
Variable types: 0 continuous, 2564 integer (2513 binary)
Root relaxation presolved: 2561 rows, 86270 columns, 256511 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14017    5.0968474e+01   0.000000e+00   3.824792e+04      5s
   29696    5.0944297e+01   0.000000e+00   2.199812e+04     10s
   45745    5.0936496e+01   0.000000e+00   2.340515e+04     15s
   62277    5.0931930e+01   0.000000e+00   3.052910e+03     20s
   78153    5.0929933e+01   0.000000e+00   5.602728e+03     25s
   92076    5.1000000e+01   0.000000e+00   0.000000e+00     29s
   92076    5.1000000e+01   0.000000e+00   0.000000e+00     29s
   92076    5.1000000e+01   0.000000e+00   0.000000e+00     30s

Root relaxation: objective 5.100000e+01, 92076 iterations, 28.26 seconds (17.60 work units)
Total elapsed time = 46.96s (DegenMoves)

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

     0     0   51.00000    0  439          -   51.00000      -     -   49s
H    0     0                       9.0000000   51.00000   467%     -   50s

Explored 1 nodes (107392 simplex iterations) in 50.08 seconds (36.51 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 9 

Time limit reached
Best objective 9.000000000000e+00, best bound 5.100000000000e+01, gap 466.6667%

Wrote result file './lp_solutions/grafo5228.43.sol'

