
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 10:00:27 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7520.45.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/grafo7520.45.lp
Reading time = 0.12 seconds
: 74111 rows, 2367 columns, 224215 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 74111 rows, 2367 columns and 224215 nonzeros
Model fingerprint: 0x4c5bb4c0
Variable types: 47 continuous, 2320 integer (2320 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 7759 rows and 27 columns
Presolve time: 0.50s
Presolved: 66352 rows, 2340 columns, 201313 nonzeros
Variable types: 0 continuous, 2340 integer (2293 binary)
Root relaxation presolved: 2340 rows, 68692 columns, 203653 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   26793    4.0971117e+01   0.000000e+00   6.382654e+03      5s
   52338    4.0963310e+01   0.000000e+00   1.041644e+02     10s
   57820    4.1000000e+01   0.000000e+00   0.000000e+00     11s
   57820    4.1000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 4.100000e+01, 57820 iterations, 10.47 seconds (8.53 work units)
Total elapsed time = 24.53s (DegenMoves)
Total elapsed time = 28.21s (DegenMoves)
Total elapsed time = 30.74s (DegenMoves)

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

     0     0   41.00000    0  755          -   41.00000      -     -   31s
H    0     0                       6.0000000   41.00000   583%     -   35s
H    0     0                       7.0000000   41.00000   486%     -   35s
     0     0   41.00000    0  835    7.00000   41.00000   486%     -   44s
H    0     0                       9.0000000   41.00000   356%     -   45s
     0     0   41.00000    0  774    9.00000   41.00000   356%     -   45s

Cutting planes:
  Gomory: 4
  Lift-and-project: 29
  Cover: 12
  Clique: 3
  MIR: 106
  StrongCG: 3
  GUB cover: 1
  Zero half: 46
  RLT: 30

Explored 1 nodes (86088 simplex iterations) in 50.17 seconds (45.71 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 7 6 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.100000000000e+01, gap 355.5556%

Wrote result file './lp_solutions/grafo7520.45.sol'

