
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 03:46:00 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1893.18.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/grafo1893.18.lp
Reading time = 0.01 seconds
: 4403 rows, 327 columns, 13320 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 4403 rows, 327 columns and 13320 nonzeros
Model fingerprint: 0x9294d54d
Variable types: 15 continuous, 312 integer (312 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]
Found heuristic solution: objective 3.0000000
Presolve removed 1121 rows and 3 columns
Presolve time: 0.06s
Presolved: 3282 rows, 324 columns, 10014 nonzeros
Variable types: 0 continuous, 324 integer (309 binary)
Found heuristic solution: objective 4.0000000

Root relaxation: objective 1.100000e+01, 125 iterations, 0.01 seconds (0.01 work units)

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

     0     0   11.00000    0   36    4.00000   11.00000   175%     -    0s
H    0     0                       6.0000000   11.00000  83.3%     -    0s
     0     0   11.00000    0   53    6.00000   11.00000  83.3%     -    0s
     0     0   10.00000    0   41    6.00000   10.00000  66.7%     -    0s
     0     0   10.00000    0   44    6.00000   10.00000  66.7%     -    0s
     0     0   10.00000    0   75    6.00000   10.00000  66.7%     -    0s
     0     0   10.00000    0   74    6.00000   10.00000  66.7%     -    0s
     0     0    9.75000    0   42    6.00000    9.75000  62.5%     -    0s
     0     0    9.66667    0   37    6.00000    9.66667  61.1%     -    0s
     0     0    9.50000    0   50    6.00000    9.50000  58.3%     -    0s
     0     0    9.50000    0   49    6.00000    9.50000  58.3%     -    0s
     0     0    9.50000    0   44    6.00000    9.50000  58.3%     -    0s
     0     0    9.50000    0   44    6.00000    9.50000  58.3%     -    0s
H    0     0                       7.0000000    9.50000  35.7%     -    1s
     0     2    9.50000    0   44    7.00000    9.50000  35.7%     -    1s

Cutting planes:
  Gomory: 1
  Cover: 41
  Clique: 2
  MIR: 80
  StrongCG: 3
  Inf proof: 51
  Zero half: 8
  RLT: 30

Explored 2125 nodes (65758 simplex iterations) in 3.99 seconds (2.25 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 7 6 4 3 

Optimal solution found (tolerance 1.00e-04)
Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0000%

Wrote result file './lp_solutions/grafo1893.18.sol'

