
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 11:36:18 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5989.49.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/grafo5989.49.lp
Reading time = 0.24 seconds
: 140073 rows, 2840 columns, 422456 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 140073 rows, 2840 columns and 422456 nonzeros
Model fingerprint: 0xd6f83d1d
Variable types: 50 continuous, 2790 integer (2790 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 35933 rows and 19 columns
Presolve time: 1.05s
Presolved: 104140 rows, 2821 columns, 315187 nonzeros
Variable types: 0 continuous, 2821 integer (2771 binary)
Root relaxation presolved: 2812 rows, 106952 columns, 318008 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16211    5.2755652e+01   0.000000e+00   8.118304e+04      5s
   34361    5.2707741e+01   0.000000e+00   2.340145e+04     10s
   51641    5.2698438e+01   0.000000e+00   4.597448e+02     15s
   62888    5.3000000e+01   0.000000e+00   0.000000e+00     19s
   62888    5.3000000e+01   0.000000e+00   0.000000e+00     19s
   62888    5.3000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 5.300000e+01, 62888 iterations, 17.34 seconds (12.53 work units)
Total elapsed time = 46.70s (DegenMoves)

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

     0     0   53.00000    0  865          -   53.00000      -     -   50s
H    0     0                       4.0000000   53.00000  1225%     -   50s

Explored 1 nodes (81164 simplex iterations) in 50.07 seconds (43.58 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 4 

Time limit reached
Best objective 4.000000000000e+00, best bound 5.300000000000e+01, gap 1225.0000%

Wrote result file './lp_solutions/grafo5989.49.sol'

