
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 06:06:33 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6796.37.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/grafo6796.37.lp
Reading time = 0.16 seconds
: 96953 rows, 2088 columns, 292662 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 96953 rows, 2088 columns and 292662 nonzeros
Model fingerprint: 0x5a7c3d21
Variable types: 45 continuous, 2043 integer (2043 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 3.0000000
Presolve removed 31536 rows and 22 columns
Presolve time: 0.72s
Presolved: 65417 rows, 2066 columns, 198598 nonzeros
Variable types: 0 continuous, 2066 integer (2021 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2066 rows, 67483 columns, 200664 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24341    5.0803045e+01   0.000000e+00   4.582099e+03      5s
   38130    5.1000000e+01   0.000000e+00   0.000000e+00      8s
   38130    5.1000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 5.100000e+01, 38130 iterations, 6.73 seconds (5.05 work units)
Total elapsed time = 15.21s (DegenMoves)
Total elapsed time = 23.76s (DegenMoves)
Total elapsed time = 27.74s (DegenMoves)

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

     0     0   51.00000    0  423    7.00000   51.00000   629%     -   29s
H    0     0                       8.0000000   51.00000   537%     -   30s
H    0     0                       9.0000000   51.00000   467%     -   45s
     0     0   51.00000    0  841    9.00000   51.00000   467%     -   45s
     0     0   51.00000    0  819    9.00000   51.00000   467%     -   47s

Cutting planes:
  Gomory: 2
  Lift-and-project: 20
  Cover: 6
  Clique: 10
  MIR: 142
  GUB cover: 1
  Zero half: 22
  RLT: 34

Explored 1 nodes (73382 simplex iterations) in 50.41 seconds (50.39 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 9 8 7 3 

Time limit reached
Best objective 9.000000000000e+00, best bound 5.100000000000e+01, gap 466.6667%

Wrote result file './lp_solutions/grafo6796.37.sol'

