
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 21:55:56 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2959.38.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/grafo2959.38.lp
Reading time = 0.12 seconds
: 74727 rows, 1807 columns, 225526 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 74727 rows, 1807 columns and 225526 nonzeros
Model fingerprint: 0x141e8f41
Variable types: 41 continuous, 1766 integer (1766 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 20835 rows and 27 columns
Presolve time: 0.57s
Presolved: 53892 rows, 1780 columns, 163294 nonzeros
Variable types: 0 continuous, 1780 integer (1739 binary)
Found heuristic solution: objective 4.0000000
Root relaxation presolved: 1780 rows, 55672 columns, 165074 nonzeros


Root relaxation: objective 3.900000e+01, 2625 iterations, 0.78 seconds (0.86 work units)
Total elapsed time = 7.50s (DegenMoves)

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

     0     0   39.00000    0  603    4.00000   39.00000   875%     -    7s
H    0     0                       6.0000000   39.00000   550%     -    8s
H    0     0                       8.0000000   39.00000   387%     -    8s
     0     0   39.00000    0  859    8.00000   39.00000   387%     -   20s
     0     0   39.00000    0  817    8.00000   39.00000   387%     -   21s
     0     0   39.00000    0  821    8.00000   39.00000   387%     -   50s

Cutting planes:
  Gomory: 2
  Cover: 3
  Clique: 24
  MIR: 151
  StrongCG: 1
  GUB cover: 1
  Zero half: 55
  RLT: 67
  BQP: 6

Explored 1 nodes (37592 simplex iterations) in 50.08 seconds (39.82 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 8 6 4 

Time limit reached
Best objective 8.000000000000e+00, best bound 3.900000000000e+01, gap 387.5000%

Wrote result file './lp_solutions/grafo2959.38.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 02:39:45 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2959.38.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/grafo2959.38.lp
Reading time = 0.12 seconds
: 74727 rows, 1807 columns, 225526 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 74727 rows, 1807 columns and 225526 nonzeros
Model fingerprint: 0x141e8f41
Variable types: 41 continuous, 1766 integer (1766 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 20835 rows and 27 columns
Presolve time: 0.55s
Presolved: 53892 rows, 1780 columns, 163294 nonzeros
Variable types: 0 continuous, 1780 integer (1739 binary)
Found heuristic solution: objective 4.0000000
Root relaxation presolved: 1780 rows, 55672 columns, 165074 nonzeros


Root relaxation: objective 3.900000e+01, 2625 iterations, 0.74 seconds (0.86 work units)
Total elapsed time = 7.09s (DegenMoves)

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

     0     0   39.00000    0  603    4.00000   39.00000   875%     -    7s
H    0     0                       6.0000000   39.00000   550%     -    7s
H    0     0                       8.0000000   39.00000   387%     -    7s
     0     0   39.00000    0  859    8.00000   39.00000   387%     -   18s
     0     0   39.00000    0  817    8.00000   39.00000   387%     -   19s
     0     0   39.00000    0  821    8.00000   39.00000   387%     -   50s

Cutting planes:
  Gomory: 2
  Cover: 3
  Clique: 24
  MIR: 151
  StrongCG: 1
  GUB cover: 1
  Zero half: 55
  RLT: 67
  BQP: 6

Explored 1 nodes (41906 simplex iterations) in 50.08 seconds (46.39 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 8 6 4 

Time limit reached
Best objective 8.000000000000e+00, best bound 3.900000000000e+01, gap 387.5000%

Wrote result file './lp_solutions/grafo2959.38.sol'

