
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:38:07 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6530.41.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/grafo6530.41.lp
Reading time = 0.40 seconds
: 192969 rows, 2200 columns, 580691 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 192969 rows, 2200 columns and 580691 nonzeros
Model fingerprint: 0xb916e31a
Variable types: 43 continuous, 2157 integer (2157 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 84993 rows and 18 columns
Presolve time: 1.73s
Presolved: 107976 rows, 2182 columns, 326153 nonzeros
Variable types: 0 continuous, 2182 integer (2139 binary)
Root relaxation presolved: 2182 rows, 110158 columns, 328335 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15319    4.6055379e+01   0.000000e+00   2.359911e+06      5s
   35977    4.3880855e+01   0.000000e+00   3.940694e+04     10s
   58510    4.3846122e+01   0.000000e+00   1.320234e+04     15s
   67246    4.4000000e+01   0.000000e+00   0.000000e+00     17s
   67246    4.4000000e+01   0.000000e+00   0.000000e+00     17s

Root relaxation: objective 4.400000e+01, 67246 iterations, 15.26 seconds (9.19 work units)
Total elapsed time = 27.34s (DegenMoves)

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

     0     0   44.00000    0  449          -   44.00000      -     -   29s
H    0     0                       4.0000000   44.00000  1000%     -   35s
     0     0   44.00000    0  709    4.00000   44.00000  1000%     -   47s
H    0     0                       7.0000000   44.00000   529%     -   48s
     0     0   44.00000    0  691    7.00000   44.00000   529%     -   49s

Cutting planes:
  Gomory: 2
  Cover: 11
  Clique: 18
  MIR: 76
  GUB cover: 1
  Zero half: 5
  RLT: 25
  BQP: 2

Explored 1 nodes (82740 simplex iterations) in 50.08 seconds (39.89 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 4 

Time limit reached
Best objective 7.000000000000e+00, best bound 4.400000000000e+01, gap 528.5714%

Wrote result file './lp_solutions/grafo6530.41.sol'

