
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 06:03:18 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6928.43.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/grafo6928.43.lp
Reading time = 0.11 seconds
: 73602 rows, 2376 columns, 222782 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 73602 rows, 2376 columns and 222782 nonzeros
Model fingerprint: 0xe7369406
Variable types: 49 continuous, 2327 integer (2327 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 7561 rows and 50 columns
Presolve time: 0.51s
Presolved: 66041 rows, 2326 columns, 200596 nonzeros
Variable types: 0 continuous, 2326 integer (2277 binary)
Root relaxation presolved: 2326 rows, 68367 columns, 202922 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24972    4.1962424e+01   0.000000e+00   1.988964e+03      5s
   41010    4.2000000e+01   0.000000e+00   0.000000e+00      8s
   41010    4.2000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.200000e+01, 41010 iterations, 7.60 seconds (5.82 work units)
Total elapsed time = 20.06s (DegenMoves)
Total elapsed time = 26.25s (DegenMoves)

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

     0     0   42.00000    0  639          -   42.00000      -     -   30s
H    0     0                       8.0000000   42.00000   425%     -   30s
H    0     0                      10.0000000   42.00000   320%     -   30s
     0     0          -    0        10.00000   42.00000   320%     -   50s

Cutting planes:
  Gomory: 29
  Cover: 38
  Clique: 1
  MIR: 147
  StrongCG: 1
  GUB cover: 9
  Zero half: 61
  RLT: 49

Explored 1 nodes (76054 simplex iterations) in 50.08 seconds (49.80 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 8 

Time limit reached
Best objective 1.000000000000e+01, best bound 4.200000000000e+01, gap 320.0000%

Wrote result file './lp_solutions/grafo6928.43.sol'

