
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 01:59:05 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2229.25.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/grafo2229.25.lp
Reading time = 0.62 seconds
: 375665 rows, 1758 columns, 1128762 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 375665 rows, 1758 columns and 1128762 nonzeros
Model fingerprint: 0x97130f23
Variable types: 42 continuous, 1716 integer (1716 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]
Presolve removed 187370 rows and 5 columns
Presolve time: 2.59s
Presolved: 188295 rows, 1753 columns, 567041 nonzeros
Variable types: 0 continuous, 1753 integer (1711 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 1751 rows, 190046 columns, 568794 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    2165    4.8265334e+01   3.675398e+03   0.000000e+00      5s
    3047    5.7000000e+01   0.000000e+00   0.000000e+00      6s
    3047    5.7000000e+01   0.000000e+00   0.000000e+00      6s
    3047    5.7000000e+01   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 5.700000e+01, 3047 iterations, 3.08 seconds (3.85 work units)

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

     0     0   57.00000    0  935    6.00000   57.00000   850%     -   37s
H    0     0                       9.0000000   57.00000   533%     -   38s
     0     0          -    0         9.00000   57.00000   533%     -   50s

Cutting planes:
  Gomory: 7
  Cover: 23
  Clique: 127
  MIR: 39
  Zero half: 72
  RLT: 101
  BQP: 17

Explored 1 nodes (11045 simplex iterations) in 50.05 seconds (41.74 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 6 

Time limit reached
Best objective 9.000000000000e+00, best bound 5.700000000000e+01, gap 533.3333%

Wrote result file './lp_solutions/grafo2229.25.sol'

