
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 07:35:32 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3104.39.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/grafo3104.39.lp
Reading time = 0.21 seconds
: 129320 rows, 2249 columns, 389939 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 129320 rows, 2249 columns and 389939 nonzeros
Model fingerprint: 0x9a3a7e5f
Variable types: 47 continuous, 2202 integer (2202 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 47343 rows and 22 columns
Presolve time: 0.92s
Presolved: 81977 rows, 2227 columns, 248371 nonzeros
Variable types: 0 continuous, 2227 integer (2180 binary)
Root relaxation presolved: 2227 rows, 84204 columns, 250598 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21665    5.2739853e+01   0.000000e+00   1.065230e+05      5s
   47405    5.2700869e+01   0.000000e+00   1.012343e+02     10s
   48335    5.3000000e+01   0.000000e+00   0.000000e+00     10s
   48335    5.3000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 5.300000e+01, 48335 iterations, 9.12 seconds (6.80 work units)
Total elapsed time = 21.63s (DegenMoves)
Total elapsed time = 37.43s (DegenMoves)
Total elapsed time = 43.01s (DegenMoves)
Total elapsed time = 45.77s (DegenMoves)

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

     0     0   53.00000    0  632          -   53.00000      -     -   47s
H    0     0                       4.0000000   53.00000  1225%     -   50s

Cutting planes:
  Cover: 45
  Clique: 26
  MIR: 269
  StrongCG: 1
  GUB cover: 2

Explored 1 nodes (80161 simplex iterations) in 50.03 seconds (59.66 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/grafo3104.39.sol'

