
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 08:18:20 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5620.42.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/grafo5620.42.lp
Reading time = 0.15 seconds
: 71612 rows, 2103 columns, 216457 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 71612 rows, 2103 columns and 216457 nonzeros
Model fingerprint: 0x4bc2fd23
Variable types: 44 continuous, 2059 integer (2059 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 1.0000000
Presolve removed 13049 rows and 24 columns
Presolve time: 0.71s
Presolved: 58563 rows, 2079 columns, 177739 nonzeros
Variable types: 0 continuous, 2079 integer (2035 binary)
Found heuristic solution: objective 3.0000000
Root relaxation presolved: 2073 rows, 60636 columns, 179818 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20437    4.0974663e+01   0.000000e+00   1.399696e+04      5s
   38718    4.0969525e+01   0.000000e+00   7.242112e+01     10s
   39524    4.1000000e+01   0.000000e+00   0.000000e+00     10s
   39524    4.1000000e+01   0.000000e+00   0.000000e+00     10s
   39524    4.1000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 4.100000e+01, 39524 iterations, 9.45 seconds (6.29 work units)
Total elapsed time = 19.17s (DegenMoves)
Total elapsed time = 28.04s (DegenMoves)
Total elapsed time = 30.24s (DegenMoves)

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

     0     0   41.00000    0  441    3.00000   41.00000  1267%     -   32s
H    0     0                       7.0000000   41.00000   486%     -   32s
     0     0   41.00000    0  694    7.00000   41.00000   486%     -   43s
H    0     0                       8.0000000   41.00000   412%     -   45s
     0     0   41.00000    0  597    8.00000   41.00000   412%     -   45s

Cutting planes:
  Gomory: 5
  Lift-and-project: 28
  Cover: 13
  Clique: 1
  MIR: 104
  StrongCG: 1
  GUB cover: 2
  Zero half: 28
  RLT: 44

Explored 1 nodes (67455 simplex iterations) in 50.24 seconds (36.29 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 8 7 3 1 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.100000000000e+01, gap 412.5000%

Wrote result file './lp_solutions/grafo5620.42.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 05:23:55 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5620.42.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/grafo5620.42.lp
Reading time = 0.12 seconds
: 71612 rows, 2103 columns, 216457 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 71612 rows, 2103 columns and 216457 nonzeros
Model fingerprint: 0x4bc2fd23
Variable types: 44 continuous, 2059 integer (2059 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 1.0000000
Presolve removed 13049 rows and 24 columns
Presolve time: 0.46s
Presolved: 58563 rows, 2079 columns, 177739 nonzeros
Variable types: 0 continuous, 2079 integer (2035 binary)
Found heuristic solution: objective 3.0000000
Root relaxation presolved: 2073 rows, 60636 columns, 179818 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   28213    4.0970600e+01   0.000000e+00   2.591185e+03      5s
   39524    4.1000000e+01   0.000000e+00   0.000000e+00      7s
   39524    4.1000000e+01   0.000000e+00   0.000000e+00      7s
   39524    4.1000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 4.100000e+01, 39524 iterations, 6.85 seconds (6.29 work units)
Total elapsed time = 14.31s (DegenMoves)
Total elapsed time = 21.05s (DegenMoves)

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

     0     0   41.00000    0  441    3.00000   41.00000  1267%     -   23s
H    0     0                       7.0000000   41.00000   486%     -   24s
     0     0   41.00000    0  694    7.00000   41.00000   486%     -   30s
H    0     0                       8.0000000   41.00000   412%     -   32s
     0     0   41.00000    0  597    8.00000   41.00000   412%     -   32s
     0     0   41.00000    0  484    8.00000   41.00000   412%     -   49s
H    0     0                       9.0000000   41.00000   356%     -   49s
     0     0          -    0         9.00000   41.00000   356%     -   50s

Cutting planes:
  Clique: 4
  MIR: 24
  Zero half: 1
  RLT: 20

Explored 1 nodes (81399 simplex iterations) in 50.06 seconds (50.36 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 9 8 7 ... 1

Time limit reached
Best objective 9.000000000000e+00, best bound 4.100000000000e+01, gap 355.5556%

Wrote result file './lp_solutions/grafo5620.42.sol'

