
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 05:49:02 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3218.42.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/grafo3218.42.lp
Reading time = 0.17 seconds
: 67212 rows, 1875 columns, 202905 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 67212 rows, 1875 columns and 202905 nonzeros
Model fingerprint: 0x73d2af7c
Variable types: 39 continuous, 1836 integer (1836 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 3.0000000
Presolve removed 15028 rows and 19 columns
Presolve time: 0.63s
Presolved: 52184 rows, 1856 columns, 158163 nonzeros
Variable types: 0 continuous, 1856 integer (1817 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 1853 rows, 54037 columns, 160019 nonzeros


Root relaxation: objective 3.800000e+01, 1346 iterations, 0.45 seconds (0.23 work units)

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

     0     0   38.00000    0  257   11.00000   38.00000   245%     -    3s
H    0     0                      12.0000000   38.00000   217%     -    5s
     0     0   38.00000    0  620   12.00000   38.00000   217%     -   12s
     0     0   38.00000    0  561   12.00000   38.00000   217%     -   13s
H    0     0                      14.0000000   38.00000   171%     -   35s
H    0     0                      15.0000000   38.00000   153%     -   35s
     0     0   38.00000    0  509   15.00000   38.00000   153%     -   35s
     0     0   38.00000    0  524   15.00000   38.00000   153%     -   37s
     0     0   38.00000    0  486   15.00000   38.00000   153%     -   49s

Cutting planes:
  Lift-and-project: 1
  Clique: 2
  MIR: 10
  RLT: 14
  BQP: 1

Explored 1 nodes (37480 simplex iterations) in 50.11 seconds (31.56 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 15 14 12 ... 3

Time limit reached
Best objective 1.500000000000e+01, best bound 3.800000000000e+01, gap 153.3333%

Wrote result file './lp_solutions/grafo3218.42.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 05:17:13 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3218.42.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/grafo3218.42.lp
Reading time = 0.11 seconds
: 67212 rows, 1875 columns, 202905 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 67212 rows, 1875 columns and 202905 nonzeros
Model fingerprint: 0x73d2af7c
Variable types: 39 continuous, 1836 integer (1836 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 3.0000000
Presolve removed 15028 rows and 19 columns
Presolve time: 0.45s
Presolved: 52184 rows, 1856 columns, 158163 nonzeros
Variable types: 0 continuous, 1856 integer (1817 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 1853 rows, 54037 columns, 160019 nonzeros


Root relaxation: objective 3.800000e+01, 1346 iterations, 0.25 seconds (0.23 work units)

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

     0     0   38.00000    0  257   11.00000   38.00000   245%     -    2s
H    0     0                      12.0000000   38.00000   217%     -    3s
     0     0   38.00000    0  620   12.00000   38.00000   217%     -    7s
     0     0   38.00000    0  561   12.00000   38.00000   217%     -    8s
H    0     0                      14.0000000   38.00000   171%     -   24s
H    0     0                      15.0000000   38.00000   153%     -   24s
     0     0   38.00000    0  509   15.00000   38.00000   153%     -   24s
     0     0   38.00000    0  524   15.00000   38.00000   153%     -   25s
     0     0   38.00000    0  486   15.00000   38.00000   153%     -   33s
     0     0   38.00000    0  472   15.00000   38.00000   153%     -   34s
     0     0   38.00000    0  451   15.00000   38.00000   153%     -   50s

Cutting planes:
  Lift-and-project: 1
  Cover: 31
  Clique: 4
  MIR: 135
  StrongCG: 1
  GUB cover: 4
  Zero half: 69
  RLT: 59
  BQP: 2

Explored 1 nodes (53088 simplex iterations) in 50.06 seconds (46.00 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 15 14 12 ... 3

Time limit reached
Best objective 1.500000000000e+01, best bound 3.800000000000e+01, gap 153.3333%

Wrote result file './lp_solutions/grafo3218.42.sol'

