
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 04:04:14 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1418.50.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/grafo1418.50.lp
Reading time = 0.16 seconds
: 83651 rows, 2558 columns, 252766 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 83651 rows, 2558 columns and 252766 nonzeros
Model fingerprint: 0x78867819
Variable types: 46 continuous, 2512 integer (2512 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 8977 rows and 32 columns
Presolve time: 0.98s
Presolved: 74674 rows, 2526 columns, 226238 nonzeros
Variable types: 0 continuous, 2526 integer (2480 binary)
Root relaxation presolved: 2526 rows, 77200 columns, 228764 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15537    4.0975649e+01   0.000000e+00   3.911572e+04      5s
   33217    4.0961011e+01   0.000000e+00   5.176820e+03     10s
   42289    4.1000000e+01   0.000000e+00   0.000000e+00     13s
   42289    4.1000000e+01   0.000000e+00   0.000000e+00     13s

Root relaxation: objective 4.100000e+01, 42289 iterations, 11.88 seconds (8.12 work units)
Total elapsed time = 22.81s (DegenMoves)

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

     0     0   41.00000    0  363          -   41.00000      -     -   23s
H    0     0                       8.0000000   41.00000   412%     -   25s
     0     0   41.00000    0  554    8.00000   41.00000   412%     -   32s
H    0     0                       9.0000000   41.00000   356%     -   32s
     0     0   41.00000    0  541    9.00000   41.00000   356%     -   34s
     0     0   41.00000    0  656    9.00000   41.00000   356%     -   50s

Cutting planes:
  Gomory: 14
  Lift-and-project: 49
  Cover: 12
  Clique: 2
  MIR: 148
  GUB cover: 1
  Zero half: 47
  RLT: 47
  BQP: 1

Explored 1 nodes (65156 simplex iterations) in 50.12 seconds (30.41 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 8 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.100000000000e+01, gap 355.5556%

Wrote result file './lp_solutions/grafo1418.50.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:54:50 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1418.50.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/grafo1418.50.lp
Reading time = 0.13 seconds
: 83651 rows, 2558 columns, 252766 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 83651 rows, 2558 columns and 252766 nonzeros
Model fingerprint: 0x78867819
Variable types: 46 continuous, 2512 integer (2512 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 8977 rows and 32 columns
Presolve time: 0.55s
Presolved: 74674 rows, 2526 columns, 226238 nonzeros
Variable types: 0 continuous, 2526 integer (2480 binary)
Root relaxation presolved: 2526 rows, 77200 columns, 228764 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24377    4.0965369e+01   0.000000e+00   1.127185e+05      5s
   42289    4.1000000e+01   0.000000e+00   0.000000e+00      9s
   42289    4.1000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 4.100000e+01, 42289 iterations, 8.32 seconds (8.12 work units)
Total elapsed time = 16.45s (DegenMoves)

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

     0     0   41.00000    0  363          -   41.00000      -     -   16s
H    0     0                       8.0000000   41.00000   412%     -   18s
     0     0   41.00000    0  554    8.00000   41.00000   412%     -   22s
H    0     0                       9.0000000   41.00000   356%     -   22s
     0     0   41.00000    0  541    9.00000   41.00000   356%     -   23s
     0     0   41.00000    0  325    9.00000   41.00000   356%     -   36s
H    0     0                      10.0000000   41.00000   310%     -   37s
     0     0   41.00000    0  320   10.00000   41.00000   310%     -   37s
     0     0   41.00000    0  366   10.00000   41.00000   310%     -   47s
     0     0   41.00000    0  362   10.00000   41.00000   310%     -   48s
     0     0          -    0        10.00000   41.00000   310%     -   50s

Cutting planes:
  Cover: 32
  Clique: 1
  MIR: 165
  StrongCG: 1
  Zero half: 44
  RLT: 58

Explored 1 nodes (83675 simplex iterations) in 50.10 seconds (46.34 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 10 9 8 

Time limit reached
Best objective 1.000000000000e+01, best bound 4.100000000000e+01, gap 310.0000%

Wrote result file './lp_solutions/grafo1418.50.sol'

