
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 18:48:04 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2284.20.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/grafo2284.20.lp
Reading time = 0.08 seconds
: 48517 rows, 850 columns, 146203 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 48517 rows, 850 columns and 146203 nonzeros
Model fingerprint: 0x0a1f6353
Variable types: 29 continuous, 821 integer (821 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 -0.0000000
Presolve removed 22206 rows and 2 columns
Presolve time: 0.28s
Presolved: 26311 rows, 848 columns, 79703 nonzeros
Variable types: 0 continuous, 848 integer (819 binary)
Found heuristic solution: objective 2.0000000
Root relaxation presolved: 21517 rows, 5642 columns, 70115 nonzeros


Root relaxation: objective 3.800000e+01, 1298 iterations, 0.45 seconds (0.53 work units)

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

     0     0   38.00000    0  331    2.00000   38.00000  1800%     -    1s
H    0     0                       5.0000000   38.00000   660%     -    1s
H    0     0                       6.0000000   38.00000   533%     -    2s
     0     0   38.00000    0  487    6.00000   38.00000   533%     -    4s
     0     0   38.00000    0  484    6.00000   38.00000   533%     -    4s
H    0     0                       7.0000000   38.00000   443%     -   14s
     0     0   38.00000    0  301    7.00000   38.00000   443%     -   14s
     0     0   38.00000    0  317    7.00000   38.00000   443%     -   14s
H    0     0                       9.0000000   38.00000   322%     -   23s
     0     0   38.00000    0  347    9.00000   38.00000   322%     -   23s
     0     0   38.00000    0  331    9.00000   38.00000   322%     -   23s
     0     0   38.00000    0  390    9.00000   38.00000   322%     -   28s
     0     0   38.00000    0  391    9.00000   38.00000   322%     -   28s
     0     0   38.00000    0  340    9.00000   38.00000   322%     -   30s
     0     0   38.00000    0  351    9.00000   38.00000   322%     -   31s
     0     0   38.00000    0  314    9.00000   38.00000   322%     -   41s
     0     0   38.00000    0  314    9.00000   38.00000   322%     -   41s
     0     2   38.00000    0  314    9.00000   38.00000   322%     -   46s
    27    31   37.00000    7  377    9.00000   38.00000   322%   579   50s

Cutting planes:
  Cover: 1
  Clique: 22
  MIR: 94
  Zero half: 4
  RLT: 53
  BQP: 1

Explored 30 nodes (80297 simplex iterations) in 50.02 seconds (56.67 work units)
Thread count was 8 (of 8 available processors)

Solution count 6: 9 7 6 ... -0

Time limit reached
Best objective 9.000000000000e+00, best bound 3.800000000000e+01, gap 322.2222%

Wrote result file './lp_solutions/grafo2284.20.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 15:05:23 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2284.20.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/grafo2284.20.lp
Reading time = 0.08 seconds
: 48517 rows, 850 columns, 146203 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 48517 rows, 850 columns and 146203 nonzeros
Model fingerprint: 0x0a1f6353
Variable types: 29 continuous, 821 integer (821 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 -0.0000000
Presolve removed 22206 rows and 2 columns
Presolve time: 0.28s
Presolved: 26311 rows, 848 columns, 79703 nonzeros
Variable types: 0 continuous, 848 integer (819 binary)
Found heuristic solution: objective 2.0000000
Root relaxation presolved: 21517 rows, 5642 columns, 70115 nonzeros


Root relaxation: objective 3.800000e+01, 1298 iterations, 0.46 seconds (0.53 work units)

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

     0     0   38.00000    0  331    2.00000   38.00000  1800%     -    1s
H    0     0                       5.0000000   38.00000   660%     -    2s
H    0     0                       6.0000000   38.00000   533%     -    2s
     0     0   38.00000    0  487    6.00000   38.00000   533%     -    4s
     0     0   38.00000    0  484    6.00000   38.00000   533%     -    4s
H    0     0                       7.0000000   38.00000   443%     -   14s
     0     0   38.00000    0  301    7.00000   38.00000   443%     -   14s
     0     0   38.00000    0  317    7.00000   38.00000   443%     -   14s
H    0     0                       9.0000000   38.00000   322%     -   23s
     0     0   38.00000    0  347    9.00000   38.00000   322%     -   23s
     0     0   38.00000    0  331    9.00000   38.00000   322%     -   23s
     0     0   38.00000    0  390    9.00000   38.00000   322%     -   28s
     0     0   38.00000    0  391    9.00000   38.00000   322%     -   28s
     0     0   38.00000    0  340    9.00000   38.00000   322%     -   30s
     0     0   38.00000    0  351    9.00000   38.00000   322%     -   31s
     0     0   38.00000    0  314    9.00000   38.00000   322%     -   41s
     0     0   38.00000    0  314    9.00000   38.00000   322%     -   42s
     0     2   38.00000    0  314    9.00000   38.00000   322%     -   46s
    23    27   38.00000    6  246    9.00000   38.00000   322%   605   50s

Cutting planes:
  Cover: 1
  Clique: 22
  MIR: 94
  Zero half: 4
  RLT: 53
  BQP: 1

Explored 26 nodes (78770 simplex iterations) in 50.02 seconds (56.02 work units)
Thread count was 8 (of 8 available processors)

Solution count 6: 9 7 6 ... -0

Time limit reached
Best objective 9.000000000000e+00, best bound 3.800000000000e+01, gap 322.2222%

Wrote result file './lp_solutions/grafo2284.20.sol'

