
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 03:15:49 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6748.38.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/grafo6748.38.lp
Reading time = 0.24 seconds
: 148078 rows, 1932 columns, 445792 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 148078 rows, 1932 columns and 445792 nonzeros
Model fingerprint: 0x3bdd879b
Variable types: 42 continuous, 1890 integer (1890 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 59016 rows and 20 columns
Presolve time: 1.00s
Presolved: 89062 rows, 1912 columns, 269094 nonzeros
Variable types: 0 continuous, 1912 integer (1870 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 1903 rows, 90965 columns, 271006 nonzeros


Root relaxation: objective 4.000000e+01, 1916 iterations, 0.56 seconds (0.61 work units)
Total elapsed time = 8.91s (DegenMoves)

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

     0     0   40.00000    0  456    7.00000   40.00000   471%     -    9s
H    0     0                       9.0000000   40.00000   344%     -   10s
     0     0   40.00000    0  563    9.00000   40.00000   344%     -   16s
     0     0   40.00000    0  558    9.00000   40.00000   344%     -   17s
     0     0   40.00000    0  454    9.00000   40.00000   344%     -   40s
     0     0   40.00000    0  393    9.00000   40.00000   344%     -   40s
     0     0   40.00000    0  589    9.00000   40.00000   344%     -   50s

Cutting planes:
  Gomory: 1
  Cover: 39
  Clique: 22
  MIR: 96
  StrongCG: 3
  Zero half: 53
  RLT: 53
  Relax-and-lift: 1
  BQP: 2

Explored 1 nodes (35349 simplex iterations) in 50.04 seconds (59.20 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 7 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.000000000000e+01, gap 344.4444%

Wrote result file './lp_solutions/grafo6748.38.sol'

