
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 07:45:12 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7387.39.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/grafo7387.39.lp
Reading time = 0.14 seconds
: 57270 rows, 2032 columns, 173530 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 57270 rows, 2032 columns and 173530 nonzeros
Model fingerprint: 0x9d953d79
Variable types: 46 continuous, 1986 integer (1986 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 5478 rows and 1 columns
Presolve time: 0.72s
Presolved: 51792 rows, 2031 columns, 157349 nonzeros
Variable types: 0 continuous, 2031 integer (1985 binary)
Found heuristic solution: objective 4.0000000
Root relaxation presolved: 27473 rows, 26350 columns, 108711 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    4085    4.2999781e+01   1.742774e+03   0.000000e+00      5s
    8065    4.2999768e+01   3.593176e+03   0.000000e+00     10s
    9210    4.3000000e+01   0.000000e+00   0.000000e+00     11s
    9210    4.3000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 4.300000e+01, 9210 iterations, 10.57 seconds (6.11 work units)
Total elapsed time = 22.07s (DegenMoves)
Total elapsed time = 25.47s (DegenMoves)

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

     0     0   43.00000    0  810    4.00000   43.00000   975%     -   30s
H    0     0                       7.0000000   43.00000   514%     -   30s
     0     0          -    0         7.00000   43.00000   514%     -   50s

Cutting planes:
  Gomory: 20
  Cover: 17
  Clique: 1
  MIR: 170
  Zero half: 70
  RLT: 57
  BQP: 1

Explored 1 nodes (33637 simplex iterations) in 50.09 seconds (34.27 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 4.300000000000e+01, gap 514.2857%

Wrote result file './lp_solutions/grafo7387.39.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 04:57:49 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7387.39.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/grafo7387.39.lp
Reading time = 0.13 seconds
: 57270 rows, 2032 columns, 173530 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 57270 rows, 2032 columns and 173530 nonzeros
Model fingerprint: 0x9d953d79
Variable types: 46 continuous, 1986 integer (1986 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 5478 rows and 1 columns
Presolve time: 0.46s
Presolved: 51792 rows, 2031 columns, 157349 nonzeros
Variable types: 0 continuous, 2031 integer (1985 binary)
Found heuristic solution: objective 4.0000000
Root relaxation presolved: 27473 rows, 26350 columns, 108711 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    4625    4.2999778e+01   1.188939e+03   0.000000e+00      5s
    8705    4.2999767e+01   6.995190e+01   0.000000e+00     10s
    9210    4.3000000e+01   0.000000e+00   0.000000e+00     11s
    9210    4.3000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 4.300000e+01, 9210 iterations, 10.49 seconds (6.11 work units)
Total elapsed time = 22.52s (DegenMoves)
Total elapsed time = 25.98s (DegenMoves)

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

     0     0   43.00000    0  810    4.00000   43.00000   975%     -   31s
H    0     0                       7.0000000   43.00000   514%     -   31s
     0     0          -    0         7.00000   43.00000   514%     -   50s

Cutting planes:
  Gomory: 20
  Cover: 17
  Clique: 1
  MIR: 170
  Zero half: 70
  RLT: 57
  BQP: 1

Explored 1 nodes (32065 simplex iterations) in 50.12 seconds (32.47 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 4.300000000000e+01, gap 514.2857%

Wrote result file './lp_solutions/grafo7387.39.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 20 06:00:40 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7387.39.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/grafo7387.39.lp
Reading time = 0.10 seconds
: 57270 rows, 2032 columns, 173530 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 57270 rows, 2032 columns and 173530 nonzeros
Model fingerprint: 0x9d953d79
Variable types: 46 continuous, 1986 integer (1986 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 5478 rows and 1 columns
Presolve time: 0.37s
Presolved: 51792 rows, 2031 columns, 157349 nonzeros
Variable types: 0 continuous, 2031 integer (1985 binary)
Found heuristic solution: objective 4.0000000
Root relaxation presolved: 27473 rows, 26350 columns, 108711 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    4985    4.2999776e+01   7.425356e+03   0.000000e+00      5s
    9210    4.3000000e+01   0.000000e+00   0.000000e+00     10s
    9210    4.3000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 4.300000e+01, 9210 iterations, 9.11 seconds (6.11 work units)
Total elapsed time = 19.31s (DegenMoves)
Total elapsed time = 22.38s (DegenMoves)
Total elapsed time = 25.55s (DegenMoves)

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

     0     0   43.00000    0  810    4.00000   43.00000   975%     -   26s
H    0     0                       7.0000000   43.00000   514%     -   26s
H    0     0                       8.0000000   43.00000   437%     -   48s
     0     0   43.00000    0 1026    8.00000   43.00000   437%     -   48s
     0     0          -    0         8.00000   43.00000   437%     -   50s

Cutting planes:
  Gomory: 5
  Cover: 1
  Clique: 1
  MIR: 54
  Zero half: 9
  RLT: 36

Explored 1 nodes (36042 simplex iterations) in 50.08 seconds (37.44 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 8 7 4 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.300000000000e+01, gap 437.5000%

Wrote result file './lp_solutions/grafo7387.39.sol'

