
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 03:08:16 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6492.38.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/grafo6492.38.lp
Reading time = 0.19 seconds
: 118806 rows, 2067 columns, 358221 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 118806 rows, 2067 columns and 358221 nonzeros
Model fingerprint: 0x383e1cc6
Variable types: 46 continuous, 2021 integer (2021 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 39927 rows and 27 columns
Presolve time: 0.94s
Presolved: 78879 rows, 2040 columns, 238708 nonzeros
Variable types: 0 continuous, 2040 integer (1994 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2037 rows, 80916 columns, 240748 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24951    4.4805358e+01   0.000000e+00   4.000643e+03      5s
   37619    4.5000000e+01   0.000000e+00   0.000000e+00      7s
   37619    4.5000000e+01   0.000000e+00   0.000000e+00      7s
   37619    4.5000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 4.500000e+01, 37619 iterations, 6.25 seconds (5.07 work units)
Total elapsed time = 16.72s (DegenMoves)

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

     0     0   45.00000    0  462    5.00000   45.00000   800%     -   19s
H    0     0                       7.0000000   45.00000   543%     -   19s
     0     0   45.00000    0  684    7.00000   45.00000   543%     -   26s
     0     0   45.00000    0  675    7.00000   45.00000   543%     -   27s
     0     0   45.00000    0  687    7.00000   45.00000   543%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 34
  Cover: 22
  Clique: 23
  MIR: 145
  GUB cover: 2
  Zero half: 57
  RLT: 51
  BQP: 3

Explored 1 nodes (69339 simplex iterations) in 50.04 seconds (54.87 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 5 

Time limit reached
Best objective 7.000000000000e+00, best bound 4.500000000000e+01, gap 542.8571%

Wrote result file './lp_solutions/grafo6492.38.sol'

