
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 04:49:30 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2255.39.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/grafo2255.39.lp
Reading time = 0.08 seconds
: 41028 rows, 1638 columns, 124166 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 41028 rows, 1638 columns and 124166 nonzeros
Model fingerprint: 0x505c133e
Variable types: 37 continuous, 1601 integer (1601 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 4620 rows and 28 columns
Presolve time: 0.34s
Presolved: 36408 rows, 1610 columns, 110648 nonzeros
Variable types: 0 continuous, 1610 integer (1573 binary)
Root relaxation presolved: 19499 rows, 18519 columns, 76830 nonzeros


Root relaxation: objective 3.200000e+01, 1539 iterations, 0.59 seconds (0.34 work units)

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

     0     0   32.00000    0  318          -   32.00000      -     -    3s
H    0     0                       8.0000000   32.00000   300%     -    4s
H    0     0                      10.0000000   32.00000   220%     -    4s
     0     0   32.00000    0  432   10.00000   32.00000   220%     -    5s
H    0     0                      11.0000000   32.00000   191%     -    5s
     0     0   32.00000    0  418   11.00000   32.00000   191%     -    5s
H    0     0                      12.0000000   32.00000   167%     -   17s
H    0     0                      13.0000000   32.00000   146%     -   17s
     0     0   31.00000    0  362   13.00000   31.00000   138%     -   17s
     0     0   31.00000    0  316   13.00000   31.00000   138%     -   17s
H    0     0                      14.0000000   31.00000   121%     -   23s
     0     0   31.00000    0  385   14.00000   31.00000   121%     -   23s
     0     0   31.00000    0  377   14.00000   31.00000   121%     -   24s
     0     0   31.00000    0  339   14.00000   31.00000   121%     -   34s
     0     0   31.00000    0  323   14.00000   31.00000   121%     -   35s
     0     0   31.00000    0  323   14.00000   31.00000   121%     -   47s
     0     0   31.00000    0  357   14.00000   31.00000   121%     -   48s
     0     0          -    0        14.00000   31.00000   121%     -   50s

Cutting planes:
  Lift-and-project: 1
  Cover: 25
  Clique: 1
  MIR: 136
  GUB cover: 1
  Zero half: 30
  RLT: 51
  Relax-and-lift: 1

Explored 1 nodes (57250 simplex iterations) in 50.07 seconds (29.20 work units)
Thread count was 8 (of 8 available processors)

Solution count 6: 14 13 12 ... 8

Time limit reached
Best objective 1.400000000000e+01, best bound 3.100000000000e+01, gap 121.4286%

Wrote result file './lp_solutions/grafo2255.39.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 03:06:58 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2255.39.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/grafo2255.39.lp
Reading time = 0.07 seconds
: 41028 rows, 1638 columns, 124166 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 41028 rows, 1638 columns and 124166 nonzeros
Model fingerprint: 0x505c133e
Variable types: 37 continuous, 1601 integer (1601 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 4620 rows and 28 columns
Presolve time: 0.26s
Presolved: 36408 rows, 1610 columns, 110648 nonzeros
Variable types: 0 continuous, 1610 integer (1573 binary)
Root relaxation presolved: 19499 rows, 18519 columns, 76830 nonzeros


Root relaxation: objective 3.200000e+01, 1539 iterations, 0.38 seconds (0.34 work units)

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

     0     0   32.00000    0  318          -   32.00000      -     -    2s
H    0     0                       8.0000000   32.00000   300%     -    2s
H    0     0                      10.0000000   32.00000   220%     -    2s
     0     0   32.00000    0  432   10.00000   32.00000   220%     -    3s
H    0     0                      11.0000000   32.00000   191%     -    3s
     0     0   32.00000    0  418   11.00000   32.00000   191%     -    3s
H    0     0                      12.0000000   32.00000   167%     -   11s
H    0     0                      13.0000000   32.00000   146%     -   11s
     0     0   31.00000    0  362   13.00000   31.00000   138%     -   11s
     0     0   31.00000    0  316   13.00000   31.00000   138%     -   11s
H    0     0                      14.0000000   31.00000   121%     -   15s
     0     0   31.00000    0  385   14.00000   31.00000   121%     -   15s
     0     0   31.00000    0  377   14.00000   31.00000   121%     -   15s
     0     0   31.00000    0  339   14.00000   31.00000   121%     -   21s
     0     0   31.00000    0  323   14.00000   31.00000   121%     -   21s
     0     0   31.00000    0  323   14.00000   31.00000   121%     -   29s
     0     0   31.00000    0  357   14.00000   31.00000   121%     -   30s
H    0     0                      15.0000000   31.00000   107%     -   34s
     0     0   31.00000    0  363   15.00000   31.00000   107%     -   34s
     0     0   31.00000    0  363   15.00000   31.00000   107%     -   35s
     0     2   31.00000    0  310   15.00000   31.00000   107%     -   40s
   160   169   28.00000   36  250   15.00000   31.00000   107%   127   45s
   421   423   20.00000   85  312   15.00000   31.00000   107%   137   50s

Cutting planes:
  Lift-and-project: 1
  Cover: 8
  Clique: 3
  MIR: 123
  StrongCG: 2
  GUB cover: 2
  Zero half: 17
  RLT: 59

Explored 422 nodes (124961 simplex iterations) in 50.03 seconds (52.02 work units)
Thread count was 8 (of 8 available processors)

Solution count 7: 15 14 13 ... 8

Time limit reached
Best objective 1.500000000000e+01, best bound 3.100000000000e+01, gap 106.6667%

Wrote result file './lp_solutions/grafo2255.39.sol'

