
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 00:56:48 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo9898.40.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/grafo9898.40.lp
Reading time = 0.10 seconds
: 50484 rows, 1884 columns, 152889 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 50484 rows, 1884 columns and 152889 nonzeros
Model fingerprint: 0xb400cc0c
Variable types: 39 continuous, 1845 integer (1845 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 7448 rows and 18 columns
Presolve time: 0.37s
Presolved: 43036 rows, 1866 columns, 131022 nonzeros
Variable types: 0 continuous, 1866 integer (1827 binary)
Root relaxation presolved: 24017 rows, 20885 columns, 92984 nonzeros


Root relaxation: objective 3.800000e+01, 1252 iterations, 0.37 seconds (0.24 work units)

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

     0     0   38.00000    0  320          -   38.00000      -     -    1s
     0     0   38.00000    0  542          -   38.00000      -     -    6s
     0     0   38.00000    0  537          -   38.00000      -     -    7s
H    0     0                      13.0000000   38.00000   192%     -   10s
     0     0   38.00000    0  480   13.00000   38.00000   192%     -   18s
H    0     0                      14.0000000   38.00000   171%     -   19s
     0     0   38.00000    0  506   14.00000   38.00000   171%     -   19s
     0     0   38.00000    0  468   14.00000   38.00000   171%     -   39s
     0     0   38.00000    0  500   14.00000   38.00000   171%     -   41s
     0     0   38.00000    0  630   14.00000   38.00000   171%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 1
  Cover: 31
  Clique: 7
  MIR: 143
  Inf proof: 2
  Zero half: 24
  RLT: 41
  BQP: 1

Explored 1 nodes (48323 simplex iterations) in 50.06 seconds (34.10 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 14 13 

Time limit reached
Best objective 1.400000000000e+01, best bound 3.800000000000e+01, gap 171.4286%

Wrote result file './lp_solutions/grafo9898.40.sol'

