
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 04:32:11 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6974.39.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/grafo6974.39.lp
Reading time = 0.20 seconds
: 125097 rows, 2230 columns, 377274 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 125097 rows, 2230 columns and 377274 nonzeros
Model fingerprint: 0xfc06c1bb
Variable types: 47 continuous, 2183 integer (2183 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 41800 rows and 9 columns
Presolve time: 0.81s
Presolved: 83297 rows, 2221 columns, 252200 nonzeros
Variable types: 0 continuous, 2221 integer (2174 binary)
Root relaxation presolved: 2214 rows, 85511 columns, 254421 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25501    5.1904643e+01   0.000000e+00   6.801702e+03      5s
   42847    5.2000000e+01   0.000000e+00   0.000000e+00      8s
   42847    5.2000000e+01   0.000000e+00   0.000000e+00      8s
   42847    5.2000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 5.200000e+01, 42847 iterations, 7.44 seconds (5.93 work units)
Total elapsed time = 18.18s (DegenMoves)
Total elapsed time = 20.04s (DegenMoves)

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

     0     0   52.00000    0  673          -   52.00000      -     -   23s
H    0     0                       4.0000000   52.00000  1200%     -   26s
     0     0   52.00000    0  874    4.00000   52.00000  1200%     -   38s
H    0     0                      10.0000000   52.00000   420%     -   39s
     0     0   52.00000    0  837   10.00000   52.00000   420%     -   40s
     0     0          -    0        10.00000   52.00000   420%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 26
  Cover: 17
  Clique: 35
  MIR: 118
  GUB cover: 2
  Zero half: 29
  RLT: 67
  BQP: 8

Explored 1 nodes (69902 simplex iterations) in 50.02 seconds (53.01 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 4 

Time limit reached
Best objective 1.000000000000e+01, best bound 5.200000000000e+01, gap 420.0000%

Wrote result file './lp_solutions/grafo6974.39.sol'

