
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 00:09:47 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1140.15.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/grafo1140.15.lp
Reading time = 0.43 seconds
: 242658 rows, 658 columns, 728515 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 242658 rows, 658 columns and 728515 nonzeros
Model fingerprint: 0xec5f47fd
Variable types: 22 continuous, 636 integer (636 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 125657 rows and 3 columns
Presolve time: 1.81s
Presolved: 117001 rows, 655 columns, 351764 nonzeros
Variable types: 0 continuous, 655 integer (633 binary)
Root relaxation presolved: 654 rows, 117655 columns, 352419 nonzeros


Starting sifting (using dual simplex for sub-problems)...

    Iter     Pivots    Primal Obj      Dual Obj        Time
       0        207    -infinity     -1.0000362e+00      3s
       1       1884  -1.2515516e+05  -1.3504623e+00      3s
       2       2983  -2.3006589e+01  -1.9183052e+01      3s

Sifting complete


Root relaxation: objective 2.300000e+01, 3524 iterations, 0.63 seconds (0.48 work units)
Total elapsed time = 7.41s (DegenMoves)
Total elapsed time = 12.05s (DegenMoves)
Total elapsed time = 15.58s (DegenMoves)

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

     0     0   23.00000    0  254          -   23.00000      -     -   16s
H    0     0                       5.0000000   23.00000   360%     -   16s
     0     0   23.00000    0  326    5.00000   23.00000   360%     -   22s
H    0     0                       6.0000000   23.00000   283%     -   23s
H    0     0                       7.0000000   23.00000   229%     -   23s
     0     0   23.00000    0  323    7.00000   23.00000   229%     -   23s
     0     0   23.00000    0  239    7.00000   23.00000   229%     -   43s
     0     0   23.00000    0  231    7.00000   23.00000   229%     -   45s
     0     0   23.00000    0  272    7.00000   23.00000   229%     -   50s

Cutting planes:
  Cover: 27
  Clique: 36
  MIR: 56
  StrongCG: 6
  GUB cover: 1
  Zero half: 59
  RLT: 42
  BQP: 3

Explored 1 nodes (21623 simplex iterations) in 50.05 seconds (58.06 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 7 6 5 

Time limit reached
Best objective 7.000000000000e+00, best bound 2.300000000000e+01, gap 228.5714%

Wrote result file './lp_solutions/grafo1140.15.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 00:12:00 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1140.15.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/grafo1140.15.lp
Reading time = 0.41 seconds
: 242658 rows, 658 columns, 728515 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 242658 rows, 658 columns and 728515 nonzeros
Model fingerprint: 0xec5f47fd
Variable types: 22 continuous, 636 integer (636 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 125657 rows and 3 columns
Presolve time: 1.82s
Presolved: 117001 rows, 655 columns, 351764 nonzeros
Variable types: 0 continuous, 655 integer (633 binary)
Root relaxation presolved: 654 rows, 117655 columns, 352419 nonzeros


Starting sifting (using dual simplex for sub-problems)...

    Iter     Pivots    Primal Obj      Dual Obj        Time
       0        207    -infinity     -1.0000362e+00      2s
       1       1884  -1.2515516e+05  -1.3504623e+00      3s
       2       2983  -2.3006589e+01  -1.9183052e+01      3s

Sifting complete


Root relaxation: objective 2.300000e+01, 3524 iterations, 0.62 seconds (0.48 work units)
Total elapsed time = 6.41s (DegenMoves)

Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 00:33:06 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1140.15.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/grafo1140.15.lp
Reading time = 0.41 seconds
: 242658 rows, 658 columns, 728515 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 242658 rows, 658 columns and 728515 nonzeros
Model fingerprint: 0xec5f47fd
Variable types: 22 continuous, 636 integer (636 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 125657 rows and 3 columns
Presolve time: 1.89s
Presolved: 117001 rows, 655 columns, 351764 nonzeros
Variable types: 0 continuous, 655 integer (633 binary)
Root relaxation presolved: 654 rows, 117655 columns, 352419 nonzeros


Starting sifting (using dual simplex for sub-problems)...

    Iter     Pivots    Primal Obj      Dual Obj        Time
       0        207    -infinity     -1.0000362e+00      3s
       1       1884  -1.2515516e+05  -1.3504623e+00      3s
       2       2983  -2.3006589e+01  -1.9183052e+01      3s

Sifting complete


Root relaxation: objective 2.300000e+01, 3524 iterations, 0.58 seconds (0.48 work units)
Total elapsed time = 6.56s (DegenMoves)
Total elapsed time = 10.91s (DegenMoves)

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

     0     0   23.00000    0  254          -   23.00000      -     -   15s
H    0     0                       5.0000000   23.00000   360%     -   15s
     0     0   23.00000    0  326    5.00000   23.00000   360%     -   20s
H    0     0                       6.0000000   23.00000   283%     -   21s
H    0     0                       7.0000000   23.00000   229%     -   21s
     0     0   23.00000    0  323    7.00000   23.00000   229%     -   21s
     0     0   23.00000    0  239    7.00000   23.00000   229%     -   41s
     0     0   23.00000    0  231    7.00000   23.00000   229%     -   43s
     0     0   23.00000    0  243    7.00000   23.00000   229%     -   50s

Cutting planes:
  Cover: 27
  Clique: 36
  MIR: 56
  StrongCG: 6
  GUB cover: 1
  Zero half: 59
  RLT: 42
  BQP: 3

Explored 1 nodes (22740 simplex iterations) in 50.06 seconds (60.61 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 7 6 5 

Time limit reached
Best objective 7.000000000000e+00, best bound 2.300000000000e+01, gap 228.5714%

Wrote result file './lp_solutions/grafo1140.15.sol'

