
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 05:56:35 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3387.40.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/grafo3387.40.lp
Reading time = 0.15 seconds
: 67565 rows, 2271 columns, 204659 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 67565 rows, 2271 columns and 204659 nonzeros
Model fingerprint: 0x25e88ae5
Variable types: 49 continuous, 2222 integer (2222 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 7074 rows and 0 columns
Presolve time: 0.51s
Presolved: 60491 rows, 2271 columns, 183848 nonzeros
Variable types: 0 continuous, 2271 integer (2222 binary)
Found heuristic solution: objective 4.0000000
Root relaxation presolved: 2223 rows, 62714 columns, 186119 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19289    4.5971306e+01   0.000000e+00   4.039626e+04      5s
   38019    4.5960846e+01   0.000000e+00   9.010466e+03     10s
   53941    4.6000000e+01   0.000000e+00   0.000000e+00     15s
   53941    4.6000000e+01   0.000000e+00   0.000000e+00     15s
   53941    4.6000000e+01   0.000000e+00   0.000000e+00     15s

Root relaxation: objective 4.600000e+01, 53941 iterations, 13.99 seconds (8.48 work units)
Total elapsed time = 35.09s (DegenMoves)
Total elapsed time = 42.07s (DegenMoves)
Total elapsed time = 47.50s (DegenMoves)

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

     0     0   46.00000    0  911    4.00000   46.00000  1050%     -   50s

Explored 1 nodes (81024 simplex iterations) in 50.03 seconds (43.50 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 4 

Time limit reached
Best objective 4.000000000000e+00, best bound 4.600000000000e+01, gap 1050.0000%

Wrote result file './lp_solutions/grafo3387.40.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 04:06:49 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3387.40.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/grafo3387.40.lp
Reading time = 0.11 seconds
: 67565 rows, 2271 columns, 204659 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 67565 rows, 2271 columns and 204659 nonzeros
Model fingerprint: 0x25e88ae5
Variable types: 49 continuous, 2222 integer (2222 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 7074 rows and 0 columns
Presolve time: 0.37s
Presolved: 60491 rows, 2271 columns, 183848 nonzeros
Variable types: 0 continuous, 2271 integer (2222 binary)
Found heuristic solution: objective 4.0000000
Root relaxation presolved: 2223 rows, 62714 columns, 186119 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   26436    4.5965657e+01   0.000000e+00   2.984220e+04      5s
   50790    4.5959485e+01   0.000000e+00   1.192707e+02     10s
   53941    4.6000000e+01   0.000000e+00   0.000000e+00     11s
   53941    4.6000000e+01   0.000000e+00   0.000000e+00     11s
   53941    4.6000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 4.600000e+01, 53941 iterations, 10.25 seconds (8.48 work units)
Total elapsed time = 27.41s (DegenMoves)
Total elapsed time = 32.78s (DegenMoves)
Total elapsed time = 36.69s (DegenMoves)
Total elapsed time = 40.50s (DegenMoves)

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

     0     0   46.00000    0  868    4.00000   46.00000  1050%     -   41s
H    0     0                       9.0000000   46.00000   411%     -   41s
     0     0          -    0         9.00000   46.00000   411%     -   50s

Cutting planes:
  Gomory: 20
  Cover: 26
  Clique: 8
  MIR: 111
  StrongCG: 1
  Zero half: 18
  RLT: 46
  BQP: 3

Explored 1 nodes (86360 simplex iterations) in 50.07 seconds (52.74 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 4 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.600000000000e+01, gap 411.1111%

Wrote result file './lp_solutions/grafo3387.40.sol'

