
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 18:30:13 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1767.32.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/grafo1767.32.lp
Reading time = 0.10 seconds
: 60938 rows, 1622 columns, 184209 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 60938 rows, 1622 columns and 184209 nonzeros
Model fingerprint: 0x274f8b1d
Variable types: 41 continuous, 1581 integer (1581 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 17026 rows and 21 columns
Presolve time: 0.42s
Presolved: 43912 rows, 1601 columns, 133483 nonzeros
Variable types: 0 continuous, 1601 integer (1560 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 28292 rows, 17221 columns, 102243 nonzeros


Root relaxation: objective 4.100000e+01, 2150 iterations, 0.90 seconds (0.87 work units)

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

     0     0   41.00000    0  449    8.00000   41.00000   413%     -    4s
     0     0   41.00000    0  802    8.00000   41.00000   412%     -   12s
H    0     0                       9.0000000   41.00000   356%     -   15s
     0     0   41.00000    0  760    9.00000   41.00000   356%     -   16s
     0     0   41.00000    0  572    9.00000   41.00000   356%     -   41s
     0     0   41.00000    0  560    9.00000   41.00000   356%     -   41s
     0     0          -    0         9.00000   41.00000   356%     -   50s

Cutting planes:
  Gomory: 1
  Cover: 34
  Clique: 26
  MIR: 154
  GUB cover: 1
  Inf proof: 1
  Zero half: 31
  RLT: 58
  BQP: 1

Explored 1 nodes (46778 simplex iterations) in 50.04 seconds (45.37 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 8 -0 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.100000000000e+01, gap 355.5556%

Wrote result file './lp_solutions/grafo1767.32.sol'

