
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 05:20:15 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo290.18.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/grafo290.18.lp
Reading time = 0.01 seconds
: 3463 rows, 312 columns, 10474 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 3463 rows, 312 columns and 10474 nonzeros
Model fingerprint: 0xfd63fbcf
Variable types: 14 continuous, 298 integer (298 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 698 rows and 7 columns
Presolve time: 0.04s
Presolved: 2765 rows, 305 columns, 8455 nonzeros
Variable types: 0 continuous, 305 integer (291 binary)

Root relaxation: objective 1.100000e+01, 134 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   67    2.00000   11.00000   450%     -    0s
H    0     0                       4.0000000   11.00000   175%     -    0s
     0     0   11.00000    0  105    4.00000   11.00000   175%     -    0s
     0     0   11.00000    0   97    4.00000   11.00000   175%     -    0s
H    0     0                       5.0000000   11.00000   120%     -    0s
     0     0   11.00000    0   89    5.00000   11.00000   120%     -    0s
H    0     0                       6.0000000   11.00000  83.3%     -    0s
     0     0   11.00000    0   91    6.00000   11.00000  83.3%     -    0s
     0     0   10.66667    0   84    6.00000   10.66667  77.8%     -    0s
     0     0   10.66667    0   82    6.00000   10.66667  77.8%     -    0s
     0     0   10.33333    0   81    6.00000   10.33333  72.2%     -    0s
     0     0   10.33333    0   88    6.00000   10.33333  72.2%     -    0s
     0     0   10.33333    0   89    6.00000   10.33333  72.2%     -    0s
     0     0   10.33333    0   45    6.00000   10.33333  72.2%     -    0s
     0     2   10.33333    0   40    6.00000   10.33333  72.2%     -    1s
H 1455   405                       7.0000000    9.50000  35.7%  35.2    3s

Cutting planes:
  Gomory: 1
  Lift-and-project: 1
  Cover: 18
  Clique: 2
  MIR: 57
  StrongCG: 1
  GUB cover: 2
  Inf proof: 64
  Zero half: 6
  RLT: 27
  BQP: 1

Explored 2723 nodes (88378 simplex iterations) in 4.30 seconds (2.50 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 7 6 5 ... 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/grafo290.18.sol'

