
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 08:31:28 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7668.43.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/grafo7668.43.lp
Reading time = 0.24 seconds
: 156853 rows, 2640 columns, 472880 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 156853 rows, 2640 columns and 472880 nonzeros
Model fingerprint: 0x515f7e1f
Variable types: 52 continuous, 2588 integer (2588 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 -0.0000000
Presolve removed 49361 rows and 36 columns
Presolve time: 1.21s
Presolved: 107492 rows, 2604 columns, 325180 nonzeros
Variable types: 0 continuous, 2604 integer (2552 binary)
Found heuristic solution: objective 4.0000000
Root relaxation presolved: 2601 rows, 110093 columns, 327784 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18850    5.6803964e+01   0.000000e+00   1.153950e+05      5s
   40900    5.6746911e+01   0.000000e+00   2.162599e+04     10s
   49729    5.7000000e+01   0.000000e+00   0.000000e+00     12s
   49729    5.7000000e+01   0.000000e+00   0.000000e+00     12s
   49729    5.7000000e+01   0.000000e+00   0.000000e+00     12s

Root relaxation: objective 5.700000e+01, 49729 iterations, 10.89 seconds (8.90 work units)
Total elapsed time = 24.69s (DegenMoves)
Total elapsed time = 27.46s (DegenMoves)

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

     0     0   57.00000    0  738    4.00000   57.00000  1325%     -   29s
H    0     0                       9.0000000   57.00000   533%     -   29s
     0     0          -    0         9.00000   57.00000   533%     -   50s

Cutting planes:
  Gomory: 34
  Cover: 46
  Clique: 33
  MIR: 175
  StrongCG: 1
  GUB cover: 10
  Zero half: 66
  RLT: 78
  BQP: 2

Explored 1 nodes (73900 simplex iterations) in 50.04 seconds (52.53 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 4 -0 

Time limit reached
Best objective 9.000000000000e+00, best bound 5.700000000000e+01, gap 533.3333%

Wrote result file './lp_solutions/grafo7668.43.sol'

