
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 05:49:44 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo499.37.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/grafo499.37.lp
Reading time = 0.15 seconds
: 89940 rows, 2033 columns, 271609 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 89940 rows, 2033 columns and 271609 nonzeros
Model fingerprint: 0x277f0ae6
Variable types: 45 continuous, 1988 integer (1988 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 28200 rows and 29 columns
Presolve time: 0.67s
Presolved: 61740 rows, 2004 columns, 187571 nonzeros
Variable types: 0 continuous, 2004 integer (1959 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2004 rows, 63744 columns, 189575 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25620    4.0798877e+01   0.000000e+00   4.539502e+03      5s
   36933    4.1000000e+01   0.000000e+00   0.000000e+00      7s
   36933    4.1000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 4.100000e+01, 36933 iterations, 6.24 seconds (4.56 work units)
Total elapsed time = 11.93s (DegenMoves)
Total elapsed time = 27.05s (DegenMoves)

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

     0     0   41.00000    0  401    9.00000   41.00000   356%     -   30s
H    0     0                      11.0000000   41.00000   273%     -   30s
     0     0   41.00000    0  705   11.00000   41.00000   273%     -   42s
     0     0   41.00000    0  682   11.00000   41.00000   273%     -   44s
     0     0          -    0        11.00000   41.00000   273%     -   50s

Cutting planes:
  Gomory: 8
  Lift-and-project: 30
  Cover: 7
  Clique: 7
  MIR: 118
  Zero half: 30
  RLT: 42
  BQP: 3

Explored 1 nodes (74330 simplex iterations) in 50.08 seconds (51.82 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 11 9 

Time limit reached
Best objective 1.100000000000e+01, best bound 4.100000000000e+01, gap 272.7273%

Wrote result file './lp_solutions/grafo499.37.sol'

