
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 06:40:14 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3865.42.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/grafo3865.42.lp
Reading time = 0.30 seconds
: 136222 rows, 2361 columns, 410569 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 136222 rows, 2361 columns and 410569 nonzeros
Model fingerprint: 0xae4bca31
Variable types: 47 continuous, 2314 integer (2314 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 46036 rows and 18 columns
Presolve time: 1.40s
Presolved: 90186 rows, 2343 columns, 272887 nonzeros
Variable types: 0 continuous, 2343 integer (2296 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2331 rows, 92517 columns, 275230 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14845    6.2450441e+01   0.000000e+00   1.567503e+05      5s
   31998    5.5846602e+01   0.000000e+00   4.322674e+04     10s
   49158    5.5826974e+01   0.000000e+00   9.402231e+03     15s
   59129    5.6000000e+01   0.000000e+00   0.000000e+00     18s
   59129    5.6000000e+01   0.000000e+00   0.000000e+00     18s
   59129    5.6000000e+01   0.000000e+00   0.000000e+00     18s

Root relaxation: objective 5.600000e+01, 59129 iterations, 16.49 seconds (9.19 work units)
Total elapsed time = 35.27s (DegenMoves)
Total elapsed time = 40.58s (DegenMoves)

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

     0     0   56.00000    0  501    5.00000   56.00000  1020%     -   41s
H    0     0                       6.0000000   56.00000   833%     -   41s
     0     0          -    0         6.00000   56.00000   833%     -   50s

Cutting planes:
  Gomory: 40
  Cover: 66
  Clique: 15
  MIR: 201
  GUB cover: 7
  Zero half: 44
  RLT: 66
  BQP: 2

Explored 1 nodes (77547 simplex iterations) in 50.02 seconds (39.14 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 6 5 

Time limit reached
Best objective 6.000000000000e+00, best bound 5.600000000000e+01, gap 833.3333%

Wrote result file './lp_solutions/grafo3865.42.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 05:22:14 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3865.42.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/grafo3865.42.lp
Reading time = 0.22 seconds
: 136222 rows, 2361 columns, 410569 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 136222 rows, 2361 columns and 410569 nonzeros
Model fingerprint: 0xae4bca31
Variable types: 47 continuous, 2314 integer (2314 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 46036 rows and 18 columns
Presolve time: 0.89s
Presolved: 90186 rows, 2343 columns, 272887 nonzeros
Variable types: 0 continuous, 2343 integer (2296 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2331 rows, 92517 columns, 275230 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21698    5.5895627e+01   0.000000e+00   5.649261e+04      5s
   45726    5.5829039e+01   0.000000e+00   1.459429e+03     10s
   59129    5.6000000e+01   0.000000e+00   0.000000e+00     13s
   59129    5.6000000e+01   0.000000e+00   0.000000e+00     13s
   59129    5.6000000e+01   0.000000e+00   0.000000e+00     13s

Root relaxation: objective 5.600000e+01, 59129 iterations, 11.85 seconds (9.19 work units)
Total elapsed time = 26.54s (DegenMoves)
Total elapsed time = 30.69s (DegenMoves)

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

     0     0   56.00000    0  501    5.00000   56.00000  1020%     -   31s
H    0     0                       6.0000000   56.00000   833%     -   31s
     0     0   56.00000    0  887    6.00000   56.00000   833%     -   45s
     0     0   56.00000    0  854    6.00000   56.00000   833%     -   46s

Cutting planes:
  Gomory: 2
  Lift-and-project: 32
  Cover: 15
  Clique: 16
  MIR: 152
  GUB cover: 1
  Zero half: 23
  RLT: 24

Explored 1 nodes (82545 simplex iterations) in 50.09 seconds (51.92 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 6 5 

Time limit reached
Best objective 6.000000000000e+00, best bound 5.600000000000e+01, gap 833.3333%

Wrote result file './lp_solutions/grafo3865.42.sol'

