
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:37:13 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6689.48.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/grafo6689.48.lp
Reading time = 0.14 seconds
: 87576 rows, 2583 columns, 264716 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 87576 rows, 2583 columns and 264716 nonzeros
Model fingerprint: 0xe224fabf
Variable types: 49 continuous, 2534 integer (2534 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 1.0000000
Presolve removed 9590 rows and 0 columns
Presolve time: 0.48s
Presolved: 77986 rows, 2583 columns, 236347 nonzeros
Variable types: 0 continuous, 2583 integer (2534 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2535 rows, 80521 columns, 238930 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24248    3.7971550e+01   0.000000e+00   2.834201e+04      5s
   45968    3.7963929e+01   0.000000e+00   6.648124e+02     10s
   57384    3.8000000e+01   0.000000e+00   0.000000e+00     13s
   57384    3.8000000e+01   0.000000e+00   0.000000e+00     13s
   57384    3.8000000e+01   0.000000e+00   0.000000e+00     13s

Root relaxation: objective 3.800000e+01, 57384 iterations, 12.33 seconds (10.94 work units)
Total elapsed time = 27.38s (DegenMoves)
Total elapsed time = 30.60s (DegenMoves)

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

     0     0   38.00000    0  701    7.00000   38.00000   443%     -   31s
H    0     0                       9.0000000   38.00000   322%     -   31s
     0     0          -    0         9.00000   38.00000   322%     -   50s

Cutting planes:
  Gomory: 32
  Cover: 26
  MIR: 136
  Zero half: 25
  RLT: 41
  BQP: 1

Explored 1 nodes (83832 simplex iterations) in 50.02 seconds (46.31 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 7 1 

Time limit reached
Best objective 9.000000000000e+00, best bound 3.800000000000e+01, gap 322.2222%

Wrote result file './lp_solutions/grafo6689.48.sol'

