
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 21:50:54 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2304.38.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/grafo2304.38.lp
Reading time = 0.16 seconds
: 128318 rows, 2180 columns, 386927 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 128318 rows, 2180 columns and 386927 nonzeros
Model fingerprint: 0x14294900
Variable types: 48 continuous, 2132 integer (2132 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 3.0000000
Presolve removed 42855 rows and 24 columns
Presolve time: 0.82s
Presolved: 85463 rows, 2156 columns, 258588 nonzeros
Variable types: 0 continuous, 2156 integer (2108 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2156 rows, 87619 columns, 260744 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   29832    4.8824734e+01   0.000000e+00   8.663485e+03      5s
   37174    4.9000000e+01   0.000000e+00   0.000000e+00      6s
   37174    4.9000000e+01   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 4.900000e+01, 37174 iterations, 5.22 seconds (5.45 work units)
Total elapsed time = 12.89s (DegenMoves)
Total elapsed time = 15.14s (DegenMoves)

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

     0     0   49.00000    0  522    9.00000   49.00000   444%     -   15s
     0     0   49.00000    0  741    9.00000   49.00000   444%     -   25s
     0     0   49.00000    0  734    9.00000   49.00000   444%     -   26s
     0     0   49.00000    0  537    9.00000   49.00000   444%     -   47s
     0     0   49.00000    0  422    9.00000   49.00000   444%     -   48s
     0     0          -    0         9.00000   49.00000   444%     -   50s

Cutting planes:
  Lift-and-project: 1
  Cover: 51
  Clique: 38
  MIR: 207
  StrongCG: 1
  GUB cover: 11
  Zero half: 44
  RLT: 86
  BQP: 2

Explored 1 nodes (75265 simplex iterations) in 50.01 seconds (67.49 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 3 

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

Wrote result file './lp_solutions/grafo2304.38.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 02:34:43 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2304.38.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/grafo2304.38.lp
Reading time = 0.20 seconds
: 128318 rows, 2180 columns, 386927 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 128318 rows, 2180 columns and 386927 nonzeros
Model fingerprint: 0x14294900
Variable types: 48 continuous, 2132 integer (2132 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 3.0000000
Presolve removed 42855 rows and 24 columns
Presolve time: 1.04s
Presolved: 85463 rows, 2156 columns, 258588 nonzeros
Variable types: 0 continuous, 2156 integer (2108 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2156 rows, 87619 columns, 260744 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22760    4.8834948e+01   0.000000e+00   4.737334e+03      5s
   37174    4.9000000e+01   0.000000e+00   0.000000e+00      8s
   37174    4.9000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.900000e+01, 37174 iterations, 6.59 seconds (5.45 work units)
Total elapsed time = 16.17s (DegenMoves)

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

     0     0   49.00000    0  522    9.00000   49.00000   444%     -   19s
     0     0   49.00000    0  741    9.00000   49.00000   444%     -   32s
     0     0   49.00000    0  734    9.00000   49.00000   444%     -   33s
     0     0   49.00000    0  852    9.00000   49.00000   444%     -   50s

Cutting planes:
  Gomory: 6
  Lift-and-project: 30
  Cover: 17
  Clique: 35
  MIR: 137
  GUB cover: 2
  Zero half: 10
  RLT: 68
  BQP: 2

Explored 1 nodes (65103 simplex iterations) in 50.04 seconds (52.36 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 3 

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

Wrote result file './lp_solutions/grafo2304.38.sol'

