
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:23:48 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7547.47.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/grafo7547.47.lp
Reading time = 0.16 seconds
: 105554 rows, 2822 columns, 319095 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 105554 rows, 2822 columns and 319095 nonzeros
Model fingerprint: 0xcd953a4b
Variable types: 53 continuous, 2769 integer (2769 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 15217 rows and 2 columns
Presolve time: 0.59s
Presolved: 90337 rows, 2820 columns, 273867 nonzeros
Variable types: 0 continuous, 2820 integer (2767 binary)
Root relaxation presolved: 2781 rows, 93118 columns, 276687 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19645    4.8941330e+01   0.000000e+00   1.231489e+05      5s
   39841    4.8919951e+01   0.000000e+00   1.538969e+04     10s
   58057    4.8914342e+01   0.000000e+00   1.408743e+03     15s
   69075    4.9000000e+01   0.000000e+00   0.000000e+00     18s
   69075    4.9000000e+01   0.000000e+00   0.000000e+00     18s
   69075    4.9000000e+01   0.000000e+00   0.000000e+00     18s

Root relaxation: objective 4.900000e+01, 69075 iterations, 17.26 seconds (14.69 work units)
Total elapsed time = 39.51s (DegenMoves)
Total elapsed time = 46.14s (DegenMoves)

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

     0     0   49.00000    0  838          -   49.00000      -     -   50s
H    0     0                       4.0000000   49.00000  1125%     -   50s

Explored 1 nodes (93993 simplex iterations) in 50.04 seconds (54.92 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 4 

Time limit reached
Best objective 4.000000000000e+00, best bound 4.900000000000e+01, gap 1125.0000%

Wrote result file './lp_solutions/grafo7547.47.sol'

