
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 06:57:52 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4068.38.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/grafo4068.38.lp
Reading time = 0.17 seconds
: 78015 rows, 2194 columns, 236075 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 78015 rows, 2194 columns and 236075 nonzeros
Model fingerprint: 0x8e1f5400
Variable types: 49 continuous, 2145 integer (2145 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 14336 rows and 29 columns
Presolve time: 0.75s
Presolved: 63679 rows, 2165 columns, 193462 nonzeros
Variable types: 0 continuous, 2165 integer (2116 binary)
Root relaxation presolved: 2165 rows, 65844 columns, 195627 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15401    4.7719808e+01   0.000000e+00   6.156694e+04      5s
   34608    4.7691914e+01   0.000000e+00   4.712611e+04     10s
   53522    4.7686972e+01   0.000000e+00   4.054266e+02     15s
   58015    4.8000000e+01   0.000000e+00   0.000000e+00     16s
   58015    4.8000000e+01   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 4.800000e+01, 58015 iterations, 15.46 seconds (8.94 work units)
Total elapsed time = 27.83s (DegenMoves)

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

     0     0   48.00000    0  507          -   48.00000      -     -   29s
H    0     0                       8.0000000   48.00000   500%     -   32s
H    0     0                      10.0000000   48.00000   380%     -   32s
     0     0   48.00000    0  669   10.00000   48.00000   380%     -   41s
H    0     0                      12.0000000   48.00000   300%     -   42s
     0     0   48.00000    0  681   12.00000   48.00000   300%     -   45s

Cutting planes:
  Gomory: 10
  Lift-and-project: 33
  Cover: 16
  Clique: 5
  MIR: 133
  StrongCG: 1
  Zero half: 14
  RLT: 41

Explored 1 nodes (75676 simplex iterations) in 50.23 seconds (29.52 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 12 10 8 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.800000000000e+01, gap 300.0000%

Wrote result file './lp_solutions/grafo4068.38.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 21 09:29:44 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4068.38.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/grafo4068.38.lp
Reading time = 0.13 seconds
: 78015 rows, 2194 columns, 236075 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 78015 rows, 2194 columns and 236075 nonzeros
Model fingerprint: 0x8e1f5400
Variable types: 49 continuous, 2145 integer (2145 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 14336 rows and 29 columns
Presolve time: 0.53s
Presolved: 63679 rows, 2165 columns, 193462 nonzeros
Variable types: 0 continuous, 2165 integer (2116 binary)
Root relaxation presolved: 2165 rows, 65844 columns, 195627 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23083    4.7702096e+01   0.000000e+00   2.769374e+04      5s
   47751    4.7687628e+01   0.000000e+00   5.615551e+02     10s
   58015    4.8000000e+01   0.000000e+00   0.000000e+00     12s
   58015    4.8000000e+01   0.000000e+00   0.000000e+00     12s

Root relaxation: objective 4.800000e+01, 58015 iterations, 11.47 seconds (8.94 work units)
Total elapsed time = 21.30s (DegenMoves)

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

     0     0   48.00000    0  507          -   48.00000      -     -   22s
H    0     0                       8.0000000   48.00000   500%     -   24s
H    0     0                      10.0000000   48.00000   380%     -   24s
     0     0   48.00000    0  669   10.00000   48.00000   380%     -   30s
H    0     0                      12.0000000   48.00000   300%     -   31s
     0     0   48.00000    0  681   12.00000   48.00000   300%     -   33s
     0     0   48.00000    0  766   12.00000   48.00000   300%     -   50s

Cutting planes:
  Gomory: 10
  Lift-and-project: 36
  Cover: 16
  Clique: 5
  MIR: 129
  StrongCG: 1
  Zero half: 13
  RLT: 59

Explored 1 nodes (84952 simplex iterations) in 50.10 seconds (40.46 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 12 10 8 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.800000000000e+01, gap 300.0000%

Wrote result file './lp_solutions/grafo4068.38.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 02:25:04 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4068.38.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/grafo4068.38.lp
Reading time = 0.12 seconds
: 78015 rows, 2194 columns, 236075 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 78015 rows, 2194 columns and 236075 nonzeros
Model fingerprint: 0x8e1f5400
Variable types: 49 continuous, 2145 integer (2145 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 14336 rows and 29 columns
Presolve time: 0.51s
Presolved: 63679 rows, 2165 columns, 193462 nonzeros
Variable types: 0 continuous, 2165 integer (2116 binary)
Root relaxation presolved: 2165 rows, 65844 columns, 195627 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23723    4.7701341e+01   0.000000e+00   7.021536e+03      5s
   49675    4.7687341e+01   0.000000e+00   7.600115e+02     10s
   58015    4.8000000e+01   0.000000e+00   0.000000e+00     12s
   58015    4.8000000e+01   0.000000e+00   0.000000e+00     12s

Root relaxation: objective 4.800000e+01, 58015 iterations, 11.04 seconds (8.94 work units)
Total elapsed time = 20.57s (DegenMoves)

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

     0     0   48.00000    0  507          -   48.00000      -     -   21s
H    0     0                       8.0000000   48.00000   500%     -   23s
H    0     0                      10.0000000   48.00000   380%     -   23s
     0     0   48.00000    0  669   10.00000   48.00000   380%     -   29s
H    0     0                      12.0000000   48.00000   300%     -   30s
     0     0   48.00000    0  681   12.00000   48.00000   300%     -   32s
     0     0   48.00000    0  766   12.00000   48.00000   300%     -   50s

Cutting planes:
  Gomory: 10
  Lift-and-project: 36
  Cover: 16
  Clique: 5
  MIR: 129
  StrongCG: 1
  Zero half: 13
  RLT: 59

Explored 1 nodes (86683 simplex iterations) in 50.10 seconds (41.84 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 12 10 8 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.800000000000e+01, gap 300.0000%

Wrote result file './lp_solutions/grafo4068.38.sol'

