
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 07:04:59 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4074.42.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/grafo4074.42.lp
Reading time = 0.19 seconds
: 117830 rows, 2357 columns, 355484 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 117830 rows, 2357 columns and 355484 nonzeros
Model fingerprint: 0x3a5df243
Variable types: 47 continuous, 2310 integer (2310 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 34899 rows and 15 columns
Presolve time: 0.82s
Presolved: 82931 rows, 2342 columns, 251224 nonzeros
Variable types: 0 continuous, 2342 integer (2295 binary)
Root relaxation presolved: 2336 rows, 85267 columns, 253566 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24965    4.9905262e+01   0.000000e+00   4.755128e+03      5s
   46406    5.0000000e+01   0.000000e+00   0.000000e+00     10s
   46406    5.0000000e+01   0.000000e+00   0.000000e+00     10s
   46406    5.0000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 5.000000e+01, 46406 iterations, 8.97 seconds (7.94 work units)
Total elapsed time = 10.25s (DegenMoves)
Total elapsed time = 22.15s (DegenMoves)

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

     0     0   50.00000    0  566          -   50.00000      -     -   25s
H    0     0                       4.0000000   50.00000  1150%     -   27s
     0     0   50.00000    0  844    4.00000   50.00000  1150%     -   37s
H    0     0                       7.0000000   50.00000   614%     -   37s
     0     0   50.00000    0  854    7.00000   50.00000   614%     -   38s
     0     0   50.00000    0  820    7.00000   50.00000   614%     -   50s

Cutting planes:
  Gomory: 6
  Lift-and-project: 15
  Clique: 14
  MIR: 108
  StrongCG: 1
  Zero half: 75
  RLT: 59
  BQP: 3

Explored 1 nodes (73982 simplex iterations) in 50.04 seconds (50.31 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 4 

Time limit reached
Best objective 7.000000000000e+00, best bound 5.000000000000e+01, gap 614.2857%

Wrote result file './lp_solutions/grafo4074.42.sol'

