
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 05:40:34 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4622.48.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/grafo4622.48.lp
Reading time = 0.24 seconds
: 132363 rows, 2821 columns, 399405 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 132363 rows, 2821 columns and 399405 nonzeros
Model fingerprint: 0xc6c99d30
Variable types: 50 continuous, 2771 integer (2771 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 34701 rows and 103 columns
Presolve time: 1.25s
Presolved: 97662 rows, 2718 columns, 295704 nonzeros
Variable types: 0 continuous, 2718 integer (2668 binary)
Root relaxation presolved: 2718 rows, 100380 columns, 298422 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15515    4.1953843e+01   0.000000e+00   4.791960e+04      5s
   33282    4.1929475e+01   0.000000e+00   7.442407e+03     10s
   48834    4.1924559e+01   0.000000e+00   1.004921e+03     15s
   55631    4.2000000e+01   0.000000e+00   0.000000e+00     17s
   55631    4.2000000e+01   0.000000e+00   0.000000e+00     17s

Root relaxation: objective 4.200000e+01, 55631 iterations, 15.93 seconds (11.68 work units)
Total elapsed time = 34.40s (DegenMoves)
Total elapsed time = 35.82s (DegenMoves)

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

     0     0   42.00000    0  541          -   42.00000      -     -   37s
H    0     0                       7.0000000   42.00000   500%     -   41s
     0     0          -    0         7.00000   42.00000   500%     -   50s

Cutting planes:
  Gomory: 31
  Cover: 47
  Clique: 30
  MIR: 137
  StrongCG: 1
  GUB cover: 3
  Zero half: 41
  RLT: 68
  BQP: 9

Explored 1 nodes (74892 simplex iterations) in 50.03 seconds (40.42 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 4.200000000000e+01, gap 500.0000%

Wrote result file './lp_solutions/grafo4622.48.sol'

