
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 09:49:32 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6524.45.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/grafo6524.45.lp
Reading time = 0.28 seconds
: 172942 rows, 3006 columns, 521653 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 172942 rows, 3006 columns and 521653 nonzeros
Model fingerprint: 0xb8b4c305
Variable types: 56 continuous, 2950 integer (2950 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 53465 rows and 33 columns
Presolve time: 1.38s
Presolved: 119477 rows, 2973 columns, 361917 nonzeros
Variable types: 0 continuous, 2973 integer (2917 binary)
Root relaxation presolved: 2964 rows, 122441 columns, 364890 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16443    5.7933804e+01   0.000000e+00   6.863440e+04      5s
   33964    5.5894978e+01   0.000000e+00   4.858807e+04     10s
   50512    5.5883335e+01   0.000000e+00   4.334132e+04     15s
   66181    5.5878152e+01   0.000000e+00   6.819784e+03     20s
   83208    5.5876495e+01   0.000000e+00   2.391670e+01     25s
   86928    5.6000000e+01   0.000000e+00   0.000000e+00     26s
   86928    5.6000000e+01   0.000000e+00   0.000000e+00     26s
   86928    5.6000000e+01   0.000000e+00   0.000000e+00     26s

Root relaxation: objective 5.600000e+01, 86928 iterations, 24.64 seconds (23.50 work units)

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

     0     0   56.00000    0 1827          -   56.00000      -     -   50s
H    0     0                       4.0000000   56.00000  1300%     -   50s

Explored 1 nodes (101229 simplex iterations) in 50.05 seconds (48.28 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 4 

Time limit reached
Best objective 4.000000000000e+00, best bound 5.600000000000e+01, gap 1300.0000%

Wrote result file './lp_solutions/grafo6524.45.sol'

