
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 22:03:28 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3421.38.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/grafo3421.38.lp
Reading time = 0.17 seconds
: 104786 rows, 2039 columns, 316031 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 104786 rows, 2039 columns and 316031 nonzeros
Model fingerprint: 0x80eeed43
Variable types: 45 continuous, 1994 integer (1994 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 33518 rows and 27 columns
Presolve time: 0.83s
Presolved: 71268 rows, 2012 columns, 215814 nonzeros
Variable types: 0 continuous, 2012 integer (1967 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2012 rows, 73280 columns, 217826 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25309    4.7824982e+01   0.000000e+00   2.492120e+04      5s
   47148    4.8000000e+01   0.000000e+00   0.000000e+00      9s
   47148    4.8000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 4.800000e+01, 47148 iterations, 8.49 seconds (5.57 work units)
Total elapsed time = 15.64s (DegenMoves)

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

     0     0   48.00000    0  404    7.00000   48.00000   586%     -   17s
H    0     0                       8.0000000   48.00000   500%     -   19s
     0     0   48.00000    0  668    8.00000   48.00000   500%     -   29s
     0     0   48.00000    0  637    8.00000   48.00000   500%     -   31s
     0     0   48.00000    0  727    8.00000   48.00000   500%     -   50s

Cutting planes:
  Gomory: 12
  Lift-and-project: 24
  Cover: 12
  Clique: 33
  MIR: 165
  StrongCG: 1
  GUB cover: 2
  Zero half: 39
  RLT: 76
  BQP: 4

Explored 1 nodes (68317 simplex iterations) in 50.10 seconds (35.07 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 7 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.800000000000e+01, gap 500.0000%

Wrote result file './lp_solutions/grafo3421.38.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 02:47:18 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3421.38.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/grafo3421.38.lp
Reading time = 0.17 seconds
: 104786 rows, 2039 columns, 316031 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 104786 rows, 2039 columns and 316031 nonzeros
Model fingerprint: 0x80eeed43
Variable types: 45 continuous, 1994 integer (1994 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 33518 rows and 27 columns
Presolve time: 0.81s
Presolved: 71268 rows, 2012 columns, 215814 nonzeros
Variable types: 0 continuous, 2012 integer (1967 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2012 rows, 73280 columns, 217826 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   27169    4.7822703e+01   0.000000e+00   6.228027e+03      5s
   47148    4.8000000e+01   0.000000e+00   0.000000e+00      9s
   47148    4.8000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 4.800000e+01, 47148 iterations, 7.60 seconds (5.57 work units)
Total elapsed time = 14.03s (DegenMoves)
Total elapsed time = 15.22s (DegenMoves)

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

     0     0   48.00000    0  404    7.00000   48.00000   586%     -   15s
H    0     0                       8.0000000   48.00000   500%     -   16s
     0     0   48.00000    0  668    8.00000   48.00000   500%     -   24s
     0     0   48.00000    0  637    8.00000   48.00000   500%     -   25s
     0     0   48.00000    0  727    8.00000   48.00000   500%     -   50s

Cutting planes:
  Gomory: 12
  Lift-and-project: 24
  Cover: 12
  Clique: 33
  MIR: 165
  StrongCG: 1
  GUB cover: 2
  Zero half: 39
  RLT: 76
  BQP: 4

Explored 1 nodes (76163 simplex iterations) in 50.10 seconds (45.25 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 7 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.800000000000e+01, gap 500.0000%

Wrote result file './lp_solutions/grafo3421.38.sol'

