
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 03:43:09 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1858.19.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/grafo1858.19.lp
Reading time = 0.01 seconds
: 3665 rows, 355 columns, 11116 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 3665 rows, 355 columns and 11116 nonzeros
Model fingerprint: 0xa5c1d4f3
Variable types: 16 continuous, 339 integer (339 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 2.0000000
Presolve removed 384 rows and 12 columns
Presolve time: 0.04s
Presolved: 3281 rows, 343 columns, 10063 nonzeros
Variable types: 0 continuous, 343 integer (327 binary)
Found heuristic solution: objective 4.0000000

Root relaxation: objective 9.000000e+00, 195 iterations, 0.02 seconds (0.01 work units)

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

     0     0    9.00000    0   54    4.00000    9.00000   125%     -    0s
H    0     0                       6.0000000    9.00000  50.0%     -    0s
     0     0    9.00000    0   54    6.00000    9.00000  50.0%     -    0s
     0     0    9.00000    0   62    6.00000    9.00000  50.0%     -    0s
     0     0    9.00000    0   35    6.00000    9.00000  50.0%     -    0s
     0     0    9.00000    0   31    6.00000    9.00000  50.0%     -    0s
     0     0    9.00000    0   33    6.00000    9.00000  50.0%     -    0s
H    0     0                       7.0000000    9.00000  28.6%     -    0s
     0     0    9.00000    0   33    7.00000    9.00000  28.6%     -    0s
     0     0    9.00000    0   22    7.00000    9.00000  28.6%     -    0s
     0     0    9.00000    0   27    7.00000    9.00000  28.6%     -    0s
     0     0    9.00000    0   28    7.00000    9.00000  28.6%     -    0s
     0     0    9.00000    0   25    7.00000    9.00000  28.6%     -    0s
     0     0    9.00000    0   22    7.00000    9.00000  28.6%     -    0s
     0     0    9.00000    0   32    7.00000    9.00000  28.6%     -    0s
     0     0    9.00000    0   31    7.00000    9.00000  28.6%     -    0s
     0     0    9.00000    0   34    7.00000    9.00000  28.6%     -    0s
     0     0    9.00000    0   27    7.00000    9.00000  28.6%     -    0s
     0     2    9.00000    0   16    7.00000    9.00000  28.6%     -    1s

Cutting planes:
  Cover: 5
  Clique: 1
  MIR: 24
  GUB cover: 1
  Inf proof: 3
  Zero half: 2
  RLT: 14

Explored 161 nodes (8205 simplex iterations) in 1.32 seconds (0.54 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 7 6 4 2 

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/grafo1858.19.sol'

