
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 05:45:41 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3155.39.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/grafo3155.39.lp
Reading time = 0.14 seconds
: 55540 rows, 1810 columns, 167961 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 55540 rows, 1810 columns and 167961 nonzeros
Model fingerprint: 0x2a385364
Variable types: 41 continuous, 1769 integer (1769 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 9653 rows and 28 columns
Presolve time: 0.69s
Presolved: 45887 rows, 1782 columns, 139330 nonzeros
Variable types: 0 continuous, 1782 integer (1741 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 26088 rows, 21581 columns, 99732 nonzeros


Root relaxation: objective 3.900000e+01, 4733 iterations, 3.37 seconds (2.37 work units)
Total elapsed time = 8.66s (DegenMoves)
Total elapsed time = 10.97s (DegenMoves)

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

     0     0   39.00000    0  549    5.00000   39.00000   680%     -   13s
H    0     0                       8.0000000   39.00000   387%     -   13s
     0     0   39.00000    0  708    8.00000   39.00000   387%     -   23s
     0     0   39.00000    0  704    8.00000   39.00000   387%     -   24s
     0     0   39.00000    0  541    8.00000   39.00000   387%     -   50s

Cutting planes:
  Gomory: 4
  Cover: 14
  Clique: 4
  MIR: 123
  StrongCG: 2
  Zero half: 40
  RLT: 62
  Relax-and-lift: 1

Explored 1 nodes (43250 simplex iterations) in 50.06 seconds (36.77 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 5 

Time limit reached
Best objective 8.000000000000e+00, best bound 3.900000000000e+01, gap 387.5000%

Wrote result file './lp_solutions/grafo3155.39.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 03:10:19 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3155.39.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/grafo3155.39.lp
Reading time = 0.09 seconds
: 55540 rows, 1810 columns, 167961 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 55540 rows, 1810 columns and 167961 nonzeros
Model fingerprint: 0x2a385364
Variable types: 41 continuous, 1769 integer (1769 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 9653 rows and 28 columns
Presolve time: 0.36s
Presolved: 45887 rows, 1782 columns, 139330 nonzeros
Variable types: 0 continuous, 1782 integer (1741 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 26088 rows, 21581 columns, 99732 nonzeros


Root relaxation: objective 3.900000e+01, 4733 iterations, 2.46 seconds (2.37 work units)
Total elapsed time = 6.12s (DegenMoves)

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

     0     0   39.00000    0  549    5.00000   39.00000   680%     -    9s
H    0     0                       8.0000000   39.00000   387%     -    9s
     0     0   39.00000    0  708    8.00000   39.00000   387%     -   16s
     0     0   39.00000    0  704    8.00000   39.00000   387%     -   16s
H    0     0                       9.0000000   39.00000   333%     -   35s
     0     0   39.00000    0  541    9.00000   39.00000   333%     -   38s
     0     0   39.00000    0  540    9.00000   39.00000   333%     -   39s
     0     0   39.00000    0  726    9.00000   39.00000   333%     -   50s

Cutting planes:
  Gomory: 1
  Cover: 23
  Clique: 3
  MIR: 137
  StrongCG: 1
  GUB cover: 1
  Zero half: 50
  RLT: 67

Explored 1 nodes (55766 simplex iterations) in 50.05 seconds (46.98 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 8 5 

Time limit reached
Best objective 9.000000000000e+00, best bound 3.900000000000e+01, gap 333.3333%

Wrote result file './lp_solutions/grafo3155.39.sol'

