
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 04:14:18 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1536.47.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/grafo1536.47.lp
Reading time = 0.14 seconds
: 59509 rows, 2136 columns, 179876 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 59509 rows, 2136 columns and 179876 nonzeros
Model fingerprint: 0xf6e0f9ef
Variable types: 41 continuous, 2095 integer (2095 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 3701 rows and 1 columns
Presolve time: 0.51s
Presolved: 55808 rows, 2135 columns, 169080 nonzeros
Variable types: 0 continuous, 2135 integer (2094 binary)
Root relaxation presolved: 28933 rows, 29010 columns, 115330 nonzeros


Root relaxation: objective 3.100000e+01, 1376 iterations, 0.70 seconds (0.34 work units)

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

     0     0   31.00000    0  310          -   31.00000      -     -    2s
H    0     0                       9.0000000   31.00000   244%     -    2s
H    0     0                      11.0000000   31.00000   182%     -    2s
H    0     0                      12.0000000   31.00000   158%     -    3s
     0     0   30.00000    0  579   12.00000   30.00000   150%     -    7s
     0     0   30.00000    0  521   12.00000   30.00000   150%     -    8s
H    0     0                      14.0000000   30.00000   114%     -   23s
H    0     0                      15.0000000   30.00000   100%     -   23s
     0     0   30.00000    0  408   15.00000   30.00000   100%     -   24s
     0     0   30.00000    0  391   15.00000   30.00000   100%     -   25s
H    0     0                      16.0000000   30.00000  87.5%     -   35s
     0     0   30.00000    0  353   16.00000   30.00000  87.5%     -   35s
     0     0   30.00000    0  265   16.00000   30.00000  87.5%     -   36s
     0     0   30.00000    0  328   16.00000   30.00000  87.5%     -   50s

Cutting planes:
  Gomory: 1
  Cover: 24
  Clique: 3
  MIR: 109
  StrongCG: 2
  Zero half: 19
  RLT: 45

Explored 1 nodes (46460 simplex iterations) in 50.08 seconds (31.57 work units)
Thread count was 8 (of 8 available processors)

Solution count 6: 16 15 14 ... 9

Time limit reached
Best objective 1.600000000000e+01, best bound 3.000000000000e+01, gap 87.5000%

Wrote result file './lp_solutions/grafo1536.47.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:10:23 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1536.47.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/grafo1536.47.lp
Reading time = 0.09 seconds
: 59509 rows, 2136 columns, 179876 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 59509 rows, 2136 columns and 179876 nonzeros
Model fingerprint: 0xf6e0f9ef
Variable types: 41 continuous, 2095 integer (2095 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 3701 rows and 1 columns
Presolve time: 0.33s
Presolved: 55808 rows, 2135 columns, 169080 nonzeros
Variable types: 0 continuous, 2135 integer (2094 binary)
Root relaxation presolved: 28933 rows, 29010 columns, 115330 nonzeros


Root relaxation: objective 3.100000e+01, 1376 iterations, 0.43 seconds (0.34 work units)

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

     0     0   31.00000    0  310          -   31.00000      -     -    1s
H    0     0                       9.0000000   31.00000   244%     -    1s
H    0     0                      11.0000000   31.00000   182%     -    1s
H    0     0                      12.0000000   31.00000   158%     -    1s
     0     0   30.00000    0  579   12.00000   30.00000   150%     -    4s
     0     0   30.00000    0  521   12.00000   30.00000   150%     -    5s
H    0     0                      14.0000000   30.00000   114%     -   15s
H    0     0                      15.0000000   30.00000   100%     -   15s
     0     0   30.00000    0  408   15.00000   30.00000   100%     -   15s
     0     0   30.00000    0  391   15.00000   30.00000   100%     -   16s
H    0     0                      16.0000000   30.00000  87.5%     -   23s
     0     0   30.00000    0  353   16.00000   30.00000  87.5%     -   23s
     0     0   30.00000    0  265   16.00000   30.00000  87.5%     -   23s
H    0     0                      17.0000000   30.00000  76.5%     -   34s
     0     0   30.00000    0  328   17.00000   30.00000  76.5%     -   34s
     0     0   30.00000    0  391   17.00000   30.00000  76.5%     -   35s
     0     0   30.00000    0  347   17.00000   30.00000  76.5%     -   44s
     0     0   30.00000    0  347   17.00000   30.00000  76.5%     -   45s
     0     0   30.00000    0  545   17.00000   30.00000  76.5%     -   50s

Cutting planes:
  Lift-and-project: 2
  Cover: 26
  Clique: 6
  MIR: 78
  StrongCG: 1
  Zero half: 26
  RLT: 57
  BQP: 2

Explored 1 nodes (68368 simplex iterations) in 50.08 seconds (46.42 work units)
Thread count was 8 (of 8 available processors)

Solution count 7: 17 16 15 ... 9

Time limit reached
Best objective 1.700000000000e+01, best bound 3.000000000000e+01, gap 76.4706%

Wrote result file './lp_solutions/grafo1536.47.sol'

