
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 20:53:05 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2070.37.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/grafo2070.37.lp
Reading time = 0.12 seconds
: 74344 rows, 2022 columns, 224763 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 74344 rows, 2022 columns and 224763 nonzeros
Model fingerprint: 0xf3c6c893
Variable types: 45 continuous, 1977 integer (1977 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 18456 rows and 23 columns
Presolve time: 0.50s
Presolved: 55888 rows, 1999 columns, 169995 nonzeros
Variable types: 0 continuous, 1999 integer (1954 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 1984 rows, 57872 columns, 171994 nonzeros


Root relaxation: objective 4.500000e+01, 2893 iterations, 0.91 seconds (1.08 work units)
Total elapsed time = 9.54s (DegenMoves)
Total elapsed time = 14.26s (DegenMoves)
Total elapsed time = 16.96s (DegenMoves)

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

     0     0   45.00000    0  580    7.00000   45.00000   543%     -   20s
H    0     0                       9.0000000   45.00000   400%     -   20s
     0     0   45.00000    0  847    9.00000   45.00000   400%     -   37s
     0     0   45.00000    0  806    9.00000   45.00000   400%     -   41s
     0     0          -    0         9.00000   45.00000   400%     -   50s

Cutting planes:
  Gomory: 4
  Cover: 5
  Clique: 1
  MIR: 89
  StrongCG: 1
  Zero half: 130
  RLT: 82

Explored 1 nodes (40221 simplex iterations) in 50.06 seconds (45.95 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 4.500000000000e+01, gap 400.0000%

Wrote result file './lp_solutions/grafo2070.37.sol'

