
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov  1 21:37:12 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo10088.39.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/grafo10088.39.lp
Reading time = 0.60 seconds
: 130189 rows, 2414 columns, 392801 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 130189 rows, 2414 columns and 392801 nonzeros
Model fingerprint: 0x3a696505
Variable types: 50 continuous, 2364 integer (2364 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 40710 rows and 25 columns
Presolve time: 2.39s
Presolved: 89479 rows, 2389 columns, 271150 nonzeros
Variable types: 0 continuous, 2389 integer (2339 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2386 rows, 91865 columns, 273539 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    6443    6.3773483e+01   0.000000e+00   4.704885e+06      5s
   17903    5.5950187e+01   0.000000e+00   4.148246e+04     10s
   28939    5.5932182e+01   0.000000e+00   3.660917e+04     15s
   39620    5.5925741e+01   0.000000e+00   4.353858e+04     20s
   49654    5.5923574e+01   0.000000e+00   1.639877e+03     25s
   59270    5.5922949e+01   0.000000e+00   2.176913e+02     30s
   67014    5.6000000e+01   0.000000e+00   0.000000e+00     34s
   67014    5.6000000e+01   0.000000e+00   0.000000e+00     34s
   67014    5.6000000e+01   0.000000e+00   0.000000e+00     34s

Root relaxation: objective 5.600000e+01, 67014 iterations, 31.56 seconds (12.36 work units)
Total elapsed time = 35.02s (DegenMoves)

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

     0     0   56.00000    0 1504    7.00000   56.00000   700%     -   50s

Explored 1 nodes (71514 simplex iterations) in 50.06 seconds (20.77 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 5.600000000000e+01, gap 700.0000%

Wrote result file './lp_solutions/grafo10088.39.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 03:39:18 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo10088.39.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/grafo10088.39.lp
Reading time = 0.21 seconds
: 130189 rows, 2414 columns, 392801 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 130189 rows, 2414 columns and 392801 nonzeros
Model fingerprint: 0x3a696505
Variable types: 50 continuous, 2364 integer (2364 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 40710 rows and 25 columns
Presolve time: 0.97s
Presolved: 89479 rows, 2389 columns, 271150 nonzeros
Variable types: 0 continuous, 2389 integer (2339 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2386 rows, 91865 columns, 273539 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22397    5.5939592e+01   0.000000e+00   1.809806e+05      5s
   43382    5.5924610e+01   0.000000e+00   1.102813e+04     10s
   63983    5.5922866e+01   0.000000e+00   3.948489e+01     15s
   67014    5.6000000e+01   0.000000e+00   0.000000e+00     16s
   67014    5.6000000e+01   0.000000e+00   0.000000e+00     16s
   67014    5.6000000e+01   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 5.600000e+01, 67014 iterations, 14.68 seconds (12.36 work units)
Total elapsed time = 33.87s (DegenMoves)
Total elapsed time = 43.59s (DegenMoves)
Total elapsed time = 45.26s (DegenMoves)

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

     0     0   56.00000    0  521    7.00000   56.00000   700%     -   45s
H    0     0                       8.0000000   56.00000   600%     -   45s
H    0     0                      11.0000000   56.00000   409%     -   45s
     0     0          -    0        11.00000   56.00000   409%     -   50s

Cutting planes:
  Gomory: 34
  Cover: 40
  Clique: 9
  MIR: 170
  StrongCG: 4
  GUB cover: 8
  Zero half: 64
  RLT: 51

Explored 1 nodes (93031 simplex iterations) in 50.02 seconds (57.16 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 11 8 7 

Time limit reached
Best objective 1.100000000000e+01, best bound 5.600000000000e+01, gap 409.0909%

Wrote result file './lp_solutions/grafo10088.39.sol'

