
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 09:15:20 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5941.41.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/grafo5941.41.lp
Reading time = 0.13 seconds
: 49758 rows, 1901 columns, 150683 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 49758 rows, 1901 columns and 150683 nonzeros
Model fingerprint: 0x7c2e5a83
Variable types: 42 continuous, 1859 integer (1859 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 3387 rows and 1 columns
Presolve time: 0.33s
Presolved: 46371 rows, 1900 columns, 140830 nonzeros
Variable types: 0 continuous, 1900 integer (1858 binary)
Found heuristic solution: objective 4.0000000
Root relaxation presolved: 24231 rows, 24040 columns, 96550 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    5926    3.1000000e+01   0.000000e+00   0.000000e+00      5s

Root relaxation: objective 3.100000e+01, 5926 iterations, 4.57 seconds (2.91 work units)
Total elapsed time = 26.92s (DegenMoves)
Total elapsed time = 31.01s (DegenMoves)

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

     0     0   31.00000    0  469    4.00000   31.00000   675%     -   31s
H    0     0                       9.0000000   31.00000   244%     -   31s
H    0     0                      10.0000000   31.00000   210%     -   31s
     0     0   31.00000    0  739   10.00000   31.00000   210%     -   42s
     0     0   31.00000    0  701   10.00000   31.00000   210%     -   44s
     0     0          -    0        10.00000   31.00000   210%     -   50s

Cutting planes:
  Gomory: 6
  Lift-and-project: 30
  Cover: 13
  Clique: 1
  MIR: 77
  StrongCG: 2
  Zero half: 18
  RLT: 66

Explored 1 nodes (44198 simplex iterations) in 50.07 seconds (37.88 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 10 9 4 

Time limit reached
Best objective 1.000000000000e+01, best bound 3.100000000000e+01, gap 210.0000%

Wrote result file './lp_solutions/grafo5941.41.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 04:57:06 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5941.41.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/grafo5941.41.lp
Reading time = 0.08 seconds
: 49758 rows, 1901 columns, 150683 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 49758 rows, 1901 columns and 150683 nonzeros
Model fingerprint: 0x7c2e5a83
Variable types: 42 continuous, 1859 integer (1859 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 3387 rows and 1 columns
Presolve time: 0.27s
Presolved: 46371 rows, 1900 columns, 140830 nonzeros
Variable types: 0 continuous, 1900 integer (1858 binary)
Found heuristic solution: objective 4.0000000
Root relaxation presolved: 24231 rows, 24040 columns, 96550 nonzeros


Root relaxation: objective 3.100000e+01, 5926 iterations, 3.25 seconds (2.91 work units)
Total elapsed time = 7.08s (DegenMoves)
Total elapsed time = 20.53s (DegenMoves)

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

     0     0   31.00000    0  469    4.00000   31.00000   675%     -   23s
H    0     0                       9.0000000   31.00000   244%     -   23s
H    0     0                      10.0000000   31.00000   210%     -   23s
     0     0   31.00000    0  739   10.00000   31.00000   210%     -   31s
     0     0   31.00000    0  701   10.00000   31.00000   210%     -   32s
     0     0   31.00000    0  750   10.00000   31.00000   210%     -   50s

Cutting planes:
  Gomory: 6
  Lift-and-project: 30
  Cover: 13
  Clique: 1
  MIR: 77
  StrongCG: 2
  Zero half: 18
  RLT: 66

Explored 1 nodes (58360 simplex iterations) in 50.05 seconds (49.68 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 10 9 4 

Time limit reached
Best objective 1.000000000000e+01, best bound 3.100000000000e+01, gap 210.0000%

Wrote result file './lp_solutions/grafo5941.41.sol'

