
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 04:30:14 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1984.34.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/grafo1984.34.lp
Reading time = 0.13 seconds
: 62716 rows, 1506 columns, 189242 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 62716 rows, 1506 columns and 189242 nonzeros
Model fingerprint: 0xa8bda210
Variable types: 37 continuous, 1469 integer (1469 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 20556 rows and 18 columns
Presolve time: 0.72s
Presolved: 42160 rows, 1488 columns, 127780 nonzeros
Variable types: 0 continuous, 1488 integer (1451 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 28406 rows, 15242 columns, 100272 nonzeros


Root relaxation: objective 4.400000e+01, 3368 iterations, 2.87 seconds (2.03 work units)
Total elapsed time = 7.24s (DegenMoves)

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

     0     0   44.00000    0  414    6.00000   44.00000   633%     -    7s
H    0     0                       7.0000000   44.00000   529%     -    9s
     0     0   44.00000    0  554    7.00000   44.00000   529%     -   17s
     0     0   44.00000    0  533    7.00000   44.00000   529%     -   19s
     0     0   44.00000    0  446    7.00000   44.00000   529%     -   43s
     0     0   44.00000    0  460    7.00000   44.00000   529%     -   44s
     0     0          -    0         7.00000   44.00000   529%     -   50s

Cutting planes:
  Gomory: 1
  Cover: 41
  Clique: 34
  MIR: 278
  StrongCG: 1
  GUB cover: 1
  Zero half: 26
  RLT: 61
  BQP: 4

Explored 1 nodes (39518 simplex iterations) in 50.06 seconds (32.94 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 6 

Time limit reached
Best objective 7.000000000000e+00, best bound 4.400000000000e+01, gap 528.5714%

Wrote result file './lp_solutions/grafo1984.34.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 21 05:15:07 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1984.34.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/grafo1984.34.lp
Reading time = 0.10 seconds
: 62716 rows, 1506 columns, 189242 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 62716 rows, 1506 columns and 189242 nonzeros
Model fingerprint: 0xa8bda210
Variable types: 37 continuous, 1469 integer (1469 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 20556 rows and 18 columns
Presolve time: 0.45s
Presolved: 42160 rows, 1488 columns, 127780 nonzeros
Variable types: 0 continuous, 1488 integer (1451 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 28406 rows, 15242 columns, 100272 nonzeros


Root relaxation: objective 4.400000e+01, 3368 iterations, 1.97 seconds (2.03 work units)
Total elapsed time = 5.12s (DegenMoves)

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

     0     0   44.00000    0  414    6.00000   44.00000   633%     -    5s
H    0     0                       7.0000000   44.00000   529%     -    6s
     0     0   44.00000    0  554    7.00000   44.00000   529%     -   11s
     0     0   44.00000    0  533    7.00000   44.00000   529%     -   12s
     0     0   44.00000    0  446    7.00000   44.00000   529%     -   30s
     0     0   44.00000    0  460    7.00000   44.00000   529%     -   31s
H    0     0                       9.0000000   44.00000   389%     -   46s
     0     0   44.00000    0  413    9.00000   44.00000   389%     -   46s
     0     0   44.00000    0  406    9.00000   44.00000   389%     -   47s
     0     0          -    0         9.00000   44.00000   389%     -   50s

Cutting planes:
  Cover: 25
  Clique: 26
  MIR: 211
  StrongCG: 3
  Zero half: 33
  RLT: 77
  BQP: 3

Explored 1 nodes (56658 simplex iterations) in 50.06 seconds (48.52 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 7 6 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.400000000000e+01, gap 388.8889%

Wrote result file './lp_solutions/grafo1984.34.sol'

