
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov  1 21:21:49 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo10042.39.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/grafo10042.39.lp
Reading time = 0.50 seconds
: 109598 rows, 2109 columns, 330573 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 109598 rows, 2109 columns and 330573 nonzeros
Model fingerprint: 0xf1d89026
Variable types: 45 continuous, 2064 integer (2064 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 35189 rows and 16 columns
Presolve time: 2.08s
Presolved: 74409 rows, 2093 columns, 225402 nonzeros
Variable types: 0 continuous, 2093 integer (2048 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2087 rows, 76496 columns, 227495 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    8236    5.4029038e+01   0.000000e+00   5.472759e+05      5s
   20914    4.8953791e+01   0.000000e+00   2.061894e+04     10s
   33588    4.8940997e+01   0.000000e+00   2.055322e+03     15s
   45366    4.9000000e+01   0.000000e+00   0.000000e+00     20s
   45366    4.9000000e+01   0.000000e+00   0.000000e+00     20s
   45366    4.9000000e+01   0.000000e+00   0.000000e+00     20s

Root relaxation: objective 4.900000e+01, 45366 iterations, 17.19 seconds (6.40 work units)
Total elapsed time = 38.57s (DegenMoves)
Total elapsed time = 43.22s (DegenMoves)
Total elapsed time = 45.31s (DegenMoves)

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

     0     0   49.00000    0  488    9.00000   49.00000   444%     -   45s

Cutting planes:
  Cover: 43
  Clique: 19
  MIR: 177
  GUB cover: 4

Explored 1 nodes (57571 simplex iterations) in 50.12 seconds (22.12 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 9 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.900000000000e+01, gap 444.4444%

Wrote result file './lp_solutions/grafo10042.39.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 03:36:47 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo10042.39.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/grafo10042.39.lp
Reading time = 0.18 seconds
: 109598 rows, 2109 columns, 330573 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 109598 rows, 2109 columns and 330573 nonzeros
Model fingerprint: 0xf1d89026
Variable types: 45 continuous, 2064 integer (2064 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 35189 rows and 16 columns
Presolve time: 0.77s
Presolved: 74409 rows, 2093 columns, 225402 nonzeros
Variable types: 0 continuous, 2093 integer (2048 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2087 rows, 76496 columns, 227495 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   26676    4.8946010e+01   0.000000e+00   9.464694e+03      5s
   45366    4.9000000e+01   0.000000e+00   0.000000e+00      9s
   45366    4.9000000e+01   0.000000e+00   0.000000e+00      9s
   45366    4.9000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 4.900000e+01, 45366 iterations, 7.66 seconds (6.40 work units)
Total elapsed time = 17.00s (DegenMoves)

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

     0     0   49.00000    0  488    9.00000   49.00000   444%     -   20s
     0     0   49.00000    0  730    9.00000   49.00000   444%     -   31s
     0     0   49.00000    0  726    9.00000   49.00000   444%     -   32s
     0     0   49.00000    0  843    9.00000   49.00000   444%     -   50s

Cutting planes:
  Gomory: 2
  Lift-and-project: 38
  Cover: 17
  Clique: 18
  MIR: 123
  GUB cover: 1
  Zero half: 14
  RLT: 74
  BQP: 1

Explored 1 nodes (72596 simplex iterations) in 50.08 seconds (47.60 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 9 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.900000000000e+01, gap 444.4444%

Wrote result file './lp_solutions/grafo10042.39.sol'

