
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 05:08:46 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2775.25.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/grafo2775.25.lp
Reading time = 0.03 seconds
: 8812 rows, 471 columns, 26524 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 8812 rows, 471 columns and 26524 nonzeros
Model fingerprint: 0xcd235ac6
Variable types: 14 continuous, 457 integer (457 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 -0.0000000
Presolve removed 2148 rows and 6 columns
Presolve time: 0.07s
Presolved: 6664 rows, 465 columns, 20146 nonzeros
Variable types: 0 continuous, 465 integer (451 binary)
Found heuristic solution: objective 2.0000000

Root relaxation: objective 1.400000e+01, 439 iterations, 0.08 seconds (0.04 work units)

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

     0     0   14.00000    0   72    2.00000   14.00000   600%     -    0s
H    0     0                       3.0000000   14.00000   367%     -    0s
H    0     0                       5.0000000   14.00000   180%     -    0s
     0     0   14.00000    0   76    5.00000   14.00000   180%     -    0s
H    0     0                       6.0000000   14.00000   133%     -    0s
H    0     0                       7.0000000   14.00000   100%     -    0s
     0     0   14.00000    0   75    7.00000   14.00000   100%     -    0s
     0     0   14.00000    0   92    7.00000   14.00000   100%     -    0s
     0     0   13.66667    0   92    7.00000   13.66667  95.2%     -    0s
     0     0   13.66667    0   93    7.00000   13.66667  95.2%     -    1s
     0     0   13.66667    0   80    7.00000   13.66667  95.2%     -    1s
     0     0   13.50000    0   78    7.00000   13.50000  92.9%     -    1s
     0     0   13.50000    0   77    7.00000   13.50000  92.9%     -    1s
     0     0   13.33333    0   92    7.00000   13.33333  90.5%     -    2s
H    0     0                       8.0000000   13.33333  66.7%     -    2s
     0     0   13.33333    0   91    8.00000   13.33333  66.7%     -    2s
     0     0   13.16667    0   75    8.00000   13.16667  64.6%     -    2s
     0     0   13.16667    0   61    8.00000   13.16667  64.6%     -    2s
     0     2   13.16667    0   61    8.00000   13.16667  64.6%     -    3s
   277   163    9.00000   23   56    8.00000   13.16667  64.6%  46.5    5s
  2053   588     cutoff   24         8.00000   11.00000  37.5%  31.0   10s
  5758   303    9.00000   24   51    8.00000    9.00000  12.5%  23.2   15s

Cutting planes:
  Gomory: 11
  Cover: 38
  Clique: 3
  MIR: 180
  StrongCG: 4
  GUB cover: 1
  Inf proof: 2
  Zero half: 21
  RLT: 62

Explored 7282 nodes (168188 simplex iterations) in 19.31 seconds (11.07 work units)
Thread count was 8 (of 8 available processors)

Solution count 7: 8 7 6 ... -0

Optimal solution found (tolerance 1.00e-04)
Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0000%

Wrote result file './lp_solutions/grafo2775.25.sol'

