
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 05:02:58 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6403.41.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/grafo6403.41.lp
Reading time = 0.16 seconds
: 100610 rows, 2512 columns, 304100 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 100610 rows, 2512 columns and 304100 nonzeros
Model fingerprint: 0xbca8e333
Variable types: 52 continuous, 2460 integer (2460 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 20758 rows and 37 columns
Presolve time: 0.69s
Presolved: 79852 rows, 2475 columns, 242242 nonzeros
Variable types: 0 continuous, 2475 integer (2423 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2475 rows, 82327 columns, 244717 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22509    5.7711560e+01   0.000000e+00   1.190559e+04      5s
   39636    5.8000000e+01   0.000000e+00   0.000000e+00      9s
   39636    5.8000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 5.800000e+01, 39636 iterations, 8.22 seconds (6.69 work units)
Total elapsed time = 23.28s (DegenMoves)

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

     0     0   58.00000    0  842    7.00000   58.00000   729%     -   48s
H    0     0                       9.0000000   58.00000   544%     -   48s

Cutting planes:
  Cover: 38
  Clique: 15
  MIR: 217
  StrongCG: 1
  GUB cover: 3

Explored 1 nodes (73965 simplex iterations) in 50.02 seconds (65.60 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 7 

Time limit reached
Best objective 9.000000000000e+00, best bound 5.800000000000e+01, gap 544.4444%

Wrote result file './lp_solutions/grafo6403.41.sol'

