
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 09:52:03 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6569.45.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/grafo6569.45.lp
Reading time = 0.25 seconds
: 157302 rows, 2577 columns, 474065 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 157302 rows, 2577 columns and 474065 nonzeros
Model fingerprint: 0x5f8d71aa
Variable types: 49 continuous, 2528 integer (2528 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 50738 rows and 19 columns
Presolve time: 1.05s
Presolved: 106564 rows, 2558 columns, 322225 nonzeros
Variable types: 0 continuous, 2558 integer (2509 binary)
Root relaxation presolved: 2549 rows, 109113 columns, 324783 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20322    4.7843548e+01   0.000000e+00   1.336925e+05      5s
   43360    4.7786590e+01   0.000000e+00   5.669660e+03     10s
   53967    4.8000000e+01   0.000000e+00   0.000000e+00     13s
   53967    4.8000000e+01   0.000000e+00   0.000000e+00     13s
   53967    4.8000000e+01   0.000000e+00   0.000000e+00     13s

Root relaxation: objective 4.800000e+01, 53967 iterations, 11.27 seconds (9.11 work units)
Total elapsed time = 24.75s (DegenMoves)
Total elapsed time = 26.35s (DegenMoves)

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

     0     0   48.00000    0  418          -   48.00000      -     -   28s
H    0     0                       3.0000000   48.00000  1500%     -   28s
     0     0   48.00000    0  850    3.00000   48.00000  1500%     -   45s
H    0     0                       8.0000000   48.00000   500%     -   46s
H    0     0                       9.0000000   48.00000   433%     -   46s
     0     0   48.00000    0  791    9.00000   48.00000   433%     -   46s

Cutting planes:
  Gomory: 6
  Lift-and-project: 23
  Cover: 10
  Clique: 15
  MIR: 115
  GUB cover: 1
  Zero half: 47
  RLT: 23

Explored 1 nodes (75627 simplex iterations) in 50.24 seconds (50.83 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 8 3 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.800000000000e+01, gap 433.3333%

Wrote result file './lp_solutions/grafo6569.45.sol'

