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

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7526.38.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/grafo7526.38.lp
Reading time = 0.12 seconds
: 72321 rows, 2079 columns, 218736 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 72321 rows, 2079 columns and 218736 nonzeros
Model fingerprint: 0x0b9f971c
Variable types: 46 continuous, 2033 integer (2033 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 14715 rows and 26 columns
Presolve time: 0.50s
Presolved: 57606 rows, 2053 columns, 175057 nonzeros
Variable types: 0 continuous, 2053 integer (2007 binary)
Found heuristic solution: objective 4.0000000
Root relaxation presolved: 2053 rows, 59659 columns, 177110 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   26493    4.6961934e+01   0.000000e+00   1.046144e+05      5s
   52719    4.6951882e+01   0.000000e+00   1.445198e+02     10s
   56298    4.7000000e+01   0.000000e+00   0.000000e+00     11s
   56298    4.7000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 4.700000e+01, 56298 iterations, 10.06 seconds (8.37 work units)
Total elapsed time = 19.27s (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   47.00000    0  497    4.00000   47.00000  1075%     -   30s
H    0     0                       7.0000000   47.00000   571%     -   30s
H    0     0                       9.0000000   47.00000   422%     -   30s
     0     0   47.00000    0  844    9.00000   47.00000   422%     -   41s
H    0     0                      10.0000000   47.00000   370%     -   42s
     0     0   47.00000    0  815   10.00000   47.00000   370%     -   45s

Cutting planes:
  Gomory: 3
  Lift-and-project: 23
  Cover: 5
  Clique: 7
  MIR: 106
  Zero half: 15
  RLT: 29

Explored 1 nodes (90963 simplex iterations) in 50.27 seconds (49.12 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 10 9 7 4 

Time limit reached
Best objective 1.000000000000e+01, best bound 4.700000000000e+01, gap 370.0000%

Wrote result file './lp_solutions/grafo7526.38.sol'

