
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 09:10:18 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5888.37.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/grafo5888.37.lp
Reading time = 0.14 seconds
: 64947 rows, 2048 columns, 196691 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 64947 rows, 2048 columns and 196691 nonzeros
Model fingerprint: 0xd76dbe08
Variable types: 47 continuous, 2001 integer (2001 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 10732 rows and 35 columns
Presolve time: 0.55s
Presolved: 54215 rows, 2013 columns, 164906 nonzeros
Variable types: 0 continuous, 2013 integer (1966 binary)
Found heuristic solution: objective 3.0000000
Root relaxation presolved: 2013 rows, 56228 columns, 166919 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20291    4.4972865e+01   0.000000e+00   1.347533e+04      5s
   39542    4.4966309e+01   0.000000e+00   1.455219e+02     10s
   41631    4.5000000e+01   0.000000e+00   0.000000e+00     11s
   41631    4.5000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 4.500000e+01, 41631 iterations, 9.91 seconds (5.48 work units)
Total elapsed time = 21.10s (DegenMoves)
Total elapsed time = 29.54s (DegenMoves)
Total elapsed time = 30.81s (DegenMoves)

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

     0     0   45.00000    0  568    3.00000   45.00000  1400%     -   31s
H    0     0                       7.0000000   45.00000   543%     -   35s
H    0     0                       8.0000000   45.00000   462%     -   35s
     0     0   45.00000    0  781    8.00000   45.00000   462%     -   47s
     0     0          -    0         8.00000   45.00000   462%     -   50s

Cutting planes:
  Gomory: 1
  Cover: 2
  MIR: 73
  Zero half: 3
  RLT: 29

Explored 1 nodes (71548 simplex iterations) in 50.10 seconds (35.89 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 8 7 3 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.500000000000e+01, gap 462.5000%

Wrote result file './lp_solutions/grafo5888.37.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 21 08:42:48 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5888.37.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/grafo5888.37.lp
Reading time = 0.11 seconds
: 64947 rows, 2048 columns, 196691 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 64947 rows, 2048 columns and 196691 nonzeros
Model fingerprint: 0xd76dbe08
Variable types: 47 continuous, 2001 integer (2001 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 10732 rows and 35 columns
Presolve time: 0.44s
Presolved: 54215 rows, 2013 columns, 164906 nonzeros
Variable types: 0 continuous, 2013 integer (1966 binary)
Found heuristic solution: objective 3.0000000
Root relaxation presolved: 2013 rows, 56228 columns, 166919 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   28103    4.4968028e+01   0.000000e+00   1.698185e+03      5s
   41631    4.5000000e+01   0.000000e+00   0.000000e+00      8s
   41631    4.5000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.500000e+01, 41631 iterations, 7.09 seconds (5.48 work units)
Total elapsed time = 15.69s (DegenMoves)
Total elapsed time = 22.23s (DegenMoves)

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

     0     0   45.00000    0  568    3.00000   45.00000  1400%     -   23s
H    0     0                       7.0000000   45.00000   543%     -   25s
H    0     0                       8.0000000   45.00000   462%     -   25s
     0     0   45.00000    0  781    8.00000   45.00000   462%     -   34s
     0     0   45.00000    0  781    8.00000   45.00000   462%     -   37s
     0     0   45.00000    0  896    8.00000   45.00000   462%     -   50s

Cutting planes:
  Gomory: 2
  Cover: 9
  MIR: 178
  GUB cover: 1
  Zero half: 62
  RLT: 63

Explored 1 nodes (80596 simplex iterations) in 50.07 seconds (46.92 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 8 7 3 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.500000000000e+01, gap 462.5000%

Wrote result file './lp_solutions/grafo5888.37.sol'

