
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 21:52:34 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2548.38.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/grafo2548.38.lp
Reading time = 0.09 seconds
: 71951 rows, 1951 columns, 217488 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 71951 rows, 1951 columns and 217488 nonzeros
Model fingerprint: 0x2d26f591
Variable types: 42 continuous, 1909 integer (1909 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 20661 rows and 9 columns
Presolve time: 0.33s
Presolved: 51290 rows, 1942 columns, 155995 nonzeros
Variable types: 0 continuous, 1942 integer (1900 binary)
Root relaxation presolved: 1934 rows, 53224 columns, 157937 nonzeros


Root relaxation: objective 4.300000e+01, 1890 iterations, 0.28 seconds (0.34 work units)

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

     0     0   43.00000    0  539          -   43.00000      -     -    3s
H    0     0                      11.0000000   43.00000   291%     -    4s
     0     0   43.00000    0  830   11.00000   43.00000   291%     -   10s
H    0     0                      12.0000000   43.00000   258%     -   10s
     0     0   43.00000    0  818   12.00000   43.00000   258%     -   11s
H    0     0                      13.0000000   43.00000   231%     -   26s
     0     0   43.00000    0  439   13.00000   43.00000   231%     -   26s
H    0     0                      14.0000000   43.00000   207%     -   27s
     0     0   43.00000    0  476   14.00000   43.00000   207%     -   27s
H    0     0                      17.0000000   43.00000   153%     -   44s
     0     0   43.00000    0  463   17.00000   43.00000   153%     -   44s
     0     0   43.00000    0  384   17.00000   43.00000   153%     -   44s
     0     0   43.00000    0  556   17.00000   43.00000   153%     -   50s

Cutting planes:
  Cover: 35
  Clique: 14
  MIR: 122
  GUB cover: 1
  Zero half: 36
  RLT: 65
  BQP: 5

Explored 1 nodes (62864 simplex iterations) in 50.05 seconds (56.37 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 17 14 13 ... 11

Time limit reached
Best objective 1.700000000000e+01, best bound 4.300000000000e+01, gap 152.9412%

Wrote result file './lp_solutions/grafo2548.38.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 02:36:24 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2548.38.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/grafo2548.38.lp
Reading time = 0.13 seconds
: 71951 rows, 1951 columns, 217488 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 71951 rows, 1951 columns and 217488 nonzeros
Model fingerprint: 0x2d26f591
Variable types: 42 continuous, 1909 integer (1909 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 20661 rows and 9 columns
Presolve time: 0.45s
Presolved: 51290 rows, 1942 columns, 155995 nonzeros
Variable types: 0 continuous, 1942 integer (1900 binary)
Root relaxation presolved: 1934 rows, 53224 columns, 157937 nonzeros


Root relaxation: objective 4.300000e+01, 1890 iterations, 0.36 seconds (0.34 work units)

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

     0     0   43.00000    0  539          -   43.00000      -     -    4s
H    0     0                      11.0000000   43.00000   291%     -    5s
     0     0   43.00000    0  830   11.00000   43.00000   291%     -   12s
H    0     0                      12.0000000   43.00000   258%     -   12s
     0     0   43.00000    0  818   12.00000   43.00000   258%     -   14s
H    0     0                      13.0000000   43.00000   231%     -   32s
     0     0   43.00000    0  439   13.00000   43.00000   231%     -   32s
H    0     0                      14.0000000   43.00000   207%     -   32s
     0     0   43.00000    0  476   14.00000   43.00000   207%     -   32s
     0     0   43.00000    0  507   14.00000   43.00000   207%     -   50s

Cutting planes:
  Cover: 36
  Clique: 15
  MIR: 140
  Zero half: 45
  RLT: 72
  BQP: 6

Explored 1 nodes (51831 simplex iterations) in 50.08 seconds (47.47 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 14 13 12 11 

Time limit reached
Best objective 1.400000000000e+01, best bound 4.300000000000e+01, gap 207.1429%

Wrote result file './lp_solutions/grafo2548.38.sol'

