
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:38:57 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7056.41.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/grafo7056.41.lp
Reading time = 0.26 seconds
: 161731 rows, 2051 columns, 486740 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 161731 rows, 2051 columns and 486740 nonzeros
Model fingerprint: 0x0f60043e
Variable types: 42 continuous, 2009 integer (2009 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 2.0000000
Presolve removed 64082 rows and 20 columns
Presolve time: 1.16s
Presolved: 97649 rows, 2031 columns, 294777 nonzeros
Variable types: 0 continuous, 2031 integer (1989 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2028 rows, 99677 columns, 296808 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23027    4.4871021e+01   0.000000e+00   7.521765e+04      5s
   49185    4.5000000e+01   0.000000e+00   0.000000e+00      9s
   49185    4.5000000e+01   0.000000e+00   0.000000e+00      9s
   49185    4.5000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 4.500000e+01, 49185 iterations, 8.19 seconds (6.30 work units)
Total elapsed time = 18.82s (DegenMoves)
Total elapsed time = 20.56s (DegenMoves)

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

     0     0   45.00000    0  440    8.00000   45.00000   462%     -   21s
H    0     0                       9.0000000   45.00000   400%     -   21s
     0     0   45.00000    0  695    9.00000   45.00000   400%     -   32s
     0     0   45.00000    0  637    9.00000   45.00000   400%     -   34s
     0     0   45.00000    0  715    9.00000   45.00000   400%     -   50s

Cutting planes:
  Gomory: 4
  Lift-and-project: 43
  Cover: 9
  Clique: 20
  MIR: 109
  GUB cover: 1
  Zero half: 33
  RLT: 68
  BQP: 2

Explored 1 nodes (73132 simplex iterations) in 50.06 seconds (51.69 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 8 2 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.500000000000e+01, gap 400.0000%

Wrote result file './lp_solutions/grafo7056.41.sol'

