
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 03:31:08 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1975.33.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/grafo1975.33.lp
Reading time = 0.24 seconds
: 151133 rows, 1909 columns, 455147 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 151133 rows, 1909 columns and 455147 nonzeros
Model fingerprint: 0x2ea68630
Variable types: 45 continuous, 1864 integer (1864 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 61082 rows and 30 columns
Presolve time: 1.13s
Presolved: 90051 rows, 1879 columns, 272184 nonzeros
Variable types: 0 continuous, 1879 integer (1834 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 1879 rows, 91930 columns, 274063 nonzeros


Root relaxation: objective 4.800000e+01, 2723 iterations, 1.08 seconds (1.47 work units)
Total elapsed time = 14.09s (DegenMoves)
Total elapsed time = 15.62s (DegenMoves)

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

     0     0   48.00000    0  639    6.00000   48.00000   700%     -   15s
H    0     0                       7.0000000   48.00000   586%     -   16s
H    0     0                       8.0000000   48.00000   500%     -   16s
     0     0   48.00000    0  903    8.00000   48.00000   500%     -   37s
     0     0   48.00000    0  891    8.00000   48.00000   500%     -   38s
     0     0          -    0         8.00000   48.00000   500%     -   50s

Cutting planes:
  Gomory: 2
  Cover: 20
  Clique: 51
  MIR: 139
  StrongCG: 2
  GUB cover: 1
  Zero half: 26
  RLT: 105
  BQP: 14

Explored 1 nodes (27579 simplex iterations) in 50.01 seconds (54.32 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 8 7 6 -0 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.800000000000e+01, gap 500.0000%

Wrote result file './lp_solutions/grafo1975.33.sol'

