
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 05:31:25 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2985.43.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/grafo2985.43.lp
Reading time = 0.14 seconds
: 79362 rows, 2256 columns, 239792 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 79362 rows, 2256 columns and 239792 nonzeros
Model fingerprint: 0xc25c286b
Variable types: 46 continuous, 2210 integer (2210 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 -0.0000000
Presolve removed 14698 rows and 42 columns
Presolve time: 0.87s
Presolved: 64664 rows, 2214 columns, 196198 nonzeros
Variable types: 0 continuous, 2214 integer (2168 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2214 rows, 66878 columns, 198412 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17473    4.7919921e+01   0.000000e+00   2.345156e+04      5s
   36662    4.8000000e+01   0.000000e+00   0.000000e+00     10s
   36662    4.8000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 4.800000e+01, 36662 iterations, 9.04 seconds (5.48 work units)
Total elapsed time = 22.24s (DegenMoves)
Total elapsed time = 25.16s (DegenMoves)

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

     0     0   48.00000    0  574    5.00000   48.00000   860%     -   27s
H    0     0                       8.0000000   48.00000   500%     -   27s
     0     0          -    0         8.00000   48.00000   500%     -   50s

Cutting planes:
  Gomory: 38
  Cover: 37
  Clique: 3
  MIR: 180
  GUB cover: 8
  Zero half: 70
  RLT: 31

Explored 1 nodes (61262 simplex iterations) in 50.09 seconds (34.63 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 8 5 -0 

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

Wrote result file './lp_solutions/grafo2985.43.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 05:48:13 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2985.43.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/grafo2985.43.lp
Reading time = 0.13 seconds
: 79362 rows, 2256 columns, 239792 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 79362 rows, 2256 columns and 239792 nonzeros
Model fingerprint: 0xc25c286b
Variable types: 46 continuous, 2210 integer (2210 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 -0.0000000
Presolve removed 14698 rows and 42 columns
Presolve time: 0.52s
Presolved: 64664 rows, 2214 columns, 196198 nonzeros
Variable types: 0 continuous, 2214 integer (2168 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2214 rows, 66878 columns, 198412 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   26713    4.7912337e+01   0.000000e+00   6.448733e+03      5s
   36662    4.8000000e+01   0.000000e+00   0.000000e+00      7s
   36662    4.8000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 4.800000e+01, 36662 iterations, 6.41 seconds (5.48 work units)
Total elapsed time = 16.91s (DegenMoves)
Total elapsed time = 20.09s (DegenMoves)

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

     0     0   48.00000    0  574    5.00000   48.00000   860%     -   20s
H    0     0                       8.0000000   48.00000   500%     -   20s
     0     0   48.00000    0  982    8.00000   48.00000   500%     -   40s
     0     0   48.00000    0  996    8.00000   48.00000   500%     -   50s

Cutting planes:
  Gomory: 2
  Cover: 1
  Clique: 2
  MIR: 42
  GUB cover: 1
  Zero half: 5
  RLT: 23

Explored 1 nodes (68723 simplex iterations) in 50.12 seconds (46.04 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 8 5 -0 

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

Wrote result file './lp_solutions/grafo2985.43.sol'

