
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 03:22:48 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7412.43.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/grafo7412.43.lp
Reading time = 0.26 seconds
: 142839 rows, 2243 columns, 430274 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 142839 rows, 2243 columns and 430274 nonzeros
Model fingerprint: 0x4a03f2a6
Variable types: 44 continuous, 2199 integer (2199 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 69811 rows and 64 columns
Presolve time: 1.12s
Presolved: 73028 rows, 2179 columns, 221181 nonzeros
Variable types: 0 continuous, 2179 integer (2135 binary)
Root relaxation presolved: 2179 rows, 75207 columns, 223360 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17142    4.6777306e+01   0.000000e+00   3.611177e+04      5s
   37919    4.6751421e+01   0.000000e+00   3.364203e+03     10s
   48081    4.7000000e+01   0.000000e+00   0.000000e+00     13s
   48081    4.7000000e+01   0.000000e+00   0.000000e+00     13s

Root relaxation: objective 4.700000e+01, 48081 iterations, 11.36 seconds (6.62 work units)
Total elapsed time = 26.07s (DegenMoves)
Total elapsed time = 30.37s (DegenMoves)

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

     0     0   47.00000    0  553          -   47.00000      -     -   33s
H    0     0                       6.0000000   47.00000   683%     -   36s
     0     0          -    0         6.00000   47.00000   683%     -   50s

Cutting planes:
  Gomory: 37
  Cover: 41
  Clique: 13
  MIR: 143
  StrongCG: 1
  GUB cover: 4
  Zero half: 82
  RLT: 73
  BQP: 1

Explored 1 nodes (71008 simplex iterations) in 50.13 seconds (38.83 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 6 

Time limit reached
Best objective 6.000000000000e+00, best bound 4.700000000000e+01, gap 683.3333%

Wrote result file './lp_solutions/grafo7412.43.sol'

