
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 04:31:04 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1990.34.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/grafo1990.34.lp
Reading time = 0.08 seconds
: 39954 rows, 1300 columns, 120710 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 39954 rows, 1300 columns and 120710 nonzeros
Model fingerprint: 0x8a5ddc8f
Variable types: 33 continuous, 1267 integer (1267 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]
Found heuristic solution: objective 1.0000000
Presolve removed 10033 rows and 16 columns
Presolve time: 0.31s
Presolved: 29921 rows, 1284 columns, 90804 nonzeros
Variable types: 0 continuous, 1284 integer (1251 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 18481 rows, 12724 columns, 67924 nonzeros


Root relaxation: objective 3.400000e+01, 2836 iterations, 1.67 seconds (1.06 work units)

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

     0     0   34.00000    0  385    6.00000   34.00000   467%     -    5s
     0     0   34.00000    0  584    6.00000   34.00000   467%     -    9s
     0     0   34.00000    0  577    6.00000   34.00000   467%     -   10s
     0     0   34.00000    0  318    6.00000   34.00000   467%     -   18s
H    0     0                       7.0000000   34.00000   386%     -   18s
     0     0   34.00000    0  307    7.00000   34.00000   386%     -   18s
     0     0   34.00000    0  273    7.00000   34.00000   386%     -   26s
     0     0   34.00000    0  310    7.00000   34.00000   386%     -   26s
     0     0   34.00000    0  338    7.00000   34.00000   386%     -   36s
     0     0   34.00000    0  301    7.00000   34.00000   386%     -   36s
H    0     0                       8.0000000   34.00000   325%     -   43s
     0     0   34.00000    0  328    8.00000   34.00000   325%     -   43s
     0     0   34.00000    0  273    8.00000   34.00000   325%     -   43s
     0     0   34.00000    0  396    8.00000   34.00000   325%     -   50s

Cutting planes:
  Gomory: 1
  Cover: 19
  Clique: 4
  MIR: 148
  StrongCG: 1
  GUB cover: 1
  Zero half: 25
  RLT: 60

Explored 1 nodes (59391 simplex iterations) in 50.04 seconds (33.14 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 8 7 6 1 

Time limit reached
Best objective 8.000000000000e+00, best bound 3.400000000000e+01, gap 325.0000%

Wrote result file './lp_solutions/grafo1990.34.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 21 05:15:57 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1990.34.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/grafo1990.34.lp
Reading time = 0.07 seconds
: 39954 rows, 1300 columns, 120710 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 39954 rows, 1300 columns and 120710 nonzeros
Model fingerprint: 0x8a5ddc8f
Variable types: 33 continuous, 1267 integer (1267 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]
Found heuristic solution: objective 1.0000000
Presolve removed 10033 rows and 16 columns
Presolve time: 0.27s
Presolved: 29921 rows, 1284 columns, 90804 nonzeros
Variable types: 0 continuous, 1284 integer (1251 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 18481 rows, 12724 columns, 67924 nonzeros


Root relaxation: objective 3.400000e+01, 2836 iterations, 1.05 seconds (1.06 work units)

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

     0     0   34.00000    0  385    6.00000   34.00000   467%     -    3s
     0     0   34.00000    0  584    6.00000   34.00000   467%     -    7s
     0     0   34.00000    0  577    6.00000   34.00000   467%     -    7s
     0     0   34.00000    0  318    6.00000   34.00000   467%     -   13s
H    0     0                       7.0000000   34.00000   386%     -   13s
     0     0   34.00000    0  307    7.00000   34.00000   386%     -   13s
     0     0   34.00000    0  273    7.00000   34.00000   386%     -   18s
     0     0   34.00000    0  310    7.00000   34.00000   386%     -   18s
     0     0   34.00000    0  338    7.00000   34.00000   386%     -   25s
     0     0   34.00000    0  301    7.00000   34.00000   386%     -   25s
H    0     0                       8.0000000   34.00000   325%     -   30s
     0     0   34.00000    0  328    8.00000   34.00000   325%     -   30s
     0     0   34.00000    0  273    8.00000   34.00000   325%     -   30s
H    0     0                       9.0000000   34.00000   278%     -   35s
     0     0   34.00000    0  396    9.00000   34.00000   278%     -   35s
     0     0   34.00000    0  372    9.00000   34.00000   278%     -   35s
     0     0   34.00000    0  325    9.00000   34.00000   278%     -   40s
     0     0   34.00000    0  350    9.00000   34.00000   278%     -   41s
H    0     0                      12.0000000   34.00000   183%     -   45s
H    0     0                      15.0000000   34.00000   127%     -   45s
     0     0   34.00000    0  377   15.00000   34.00000   127%     -   45s
     0     0   34.00000    0  355   15.00000   34.00000   127%     -   47s
     0     2   34.00000    0  355   15.00000   34.00000   127%     -   50s

Cutting planes:
  Gomory: 1
  Clique: 8
  MIR: 46
  Zero half: 5
  RLT: 35

Explored 1 nodes (79566 simplex iterations) in 50.04 seconds (47.12 work units)
Thread count was 8 (of 8 available processors)

Solution count 7: 15 12 9 ... 1

Time limit reached
Best objective 1.500000000000e+01, best bound 3.400000000000e+01, gap 126.6667%

Wrote result file './lp_solutions/grafo1990.34.sol'

