
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 18:18:29 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1804.19.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/grafo1804.19.lp
Reading time = 0.16 seconds
: 101128 rows, 857 columns, 304047 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 101128 rows, 857 columns and 304047 nonzeros
Model fingerprint: 0x8aef9fd7
Variable types: 28 continuous, 829 integer (829 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 1.0000000
Presolve removed 51045 rows and 9 columns
Presolve time: 0.70s
Presolved: 50083 rows, 848 columns, 151069 nonzeros
Variable types: 0 continuous, 848 integer (820 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 848 rows, 50931 columns, 151917 nonzeros


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

    Iter     Pivots    Primal Obj      Dual Obj        Time
       0        201    -infinity     -1.0000000e+00      1s
       1       2411  -2.8666941e+02  -2.3668393e+00      1s
       2       3171  -2.8666941e+02  -8.1540894e+00      1s
       3       3972  -6.3076923e+01  -8.8333075e+00      1s
       4       4558  -3.7057692e+01  -8.8844169e+00      1s
       5       5074  -3.5000000e+01  -1.0042749e+01      1s
       6       5626  -3.5000000e+01  -1.0136409e+01      1s
       7       6300  -3.5000000e+01  -1.0558723e+01      1s
       8       6956  -3.5000000e+01  -1.1896918e+01      1s
       9       7582  -3.5000000e+01  -1.3836462e+01      1s
      10       8256  -3.5000000e+01  -1.3915661e+01      1s

Sifting complete


Root relaxation: objective 3.500000e+01, 10948 iterations, 0.85 seconds (0.69 work units)
Total elapsed time = 5.45s (DegenMoves)

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

     0     0   35.00000    0  387    7.00000   35.00000   400%     -    6s
H    0     0                       8.0000000   35.00000   337%     -    6s
     0     0   35.00000    0  508    8.00000   35.00000   337%     -   11s
     0     0   35.00000    0  493    8.00000   35.00000   337%     -   13s
     0     0   35.00000    0  447    8.00000   35.00000   337%     -   22s
H    0     0                       9.0000000   35.00000   289%     -   23s
     0     0   35.00000    0  415    9.00000   35.00000   289%     -   24s
     0     0   35.00000    0  293    9.00000   35.00000   289%     -   38s
     0     0   35.00000    0  269    9.00000   35.00000   289%     -   39s
     0     0   35.00000    0  389    9.00000   35.00000   289%     -   50s

Cutting planes:
  Cover: 30
  Clique: 52
  MIR: 121
  StrongCG: 1
  GUB cover: 4
  Zero half: 43
  RLT: 64
  BQP: 6

Explored 1 nodes (50176 simplex iterations) in 50.05 seconds (54.76 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 9 8 7 1 

Time limit reached
Best objective 9.000000000000e+00, best bound 3.500000000000e+01, gap 288.8889%

Wrote result file './lp_solutions/grafo1804.19.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 14:06:44 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1804.19.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/grafo1804.19.lp
Reading time = 0.17 seconds
: 101128 rows, 857 columns, 304047 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 101128 rows, 857 columns and 304047 nonzeros
Model fingerprint: 0x8aef9fd7
Variable types: 28 continuous, 829 integer (829 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 1.0000000
Presolve removed 51045 rows and 9 columns
Presolve time: 0.72s
Presolved: 50083 rows, 848 columns, 151069 nonzeros
Variable types: 0 continuous, 848 integer (820 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 848 rows, 50931 columns, 151917 nonzeros


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

    Iter     Pivots    Primal Obj      Dual Obj        Time
       0        201    -infinity     -1.0000000e+00      1s
       1       2411  -2.8666941e+02  -2.3668393e+00      1s
       2       3171  -2.8666941e+02  -8.1540894e+00      1s
       3       3972  -6.3076923e+01  -8.8333075e+00      1s
       4       4558  -3.7057692e+01  -8.8844169e+00      1s
       5       5074  -3.5000000e+01  -1.0042749e+01      1s
       6       5626  -3.5000000e+01  -1.0136409e+01      1s
       7       6300  -3.5000000e+01  -1.0558723e+01      1s
       8       6956  -3.5000000e+01  -1.1896918e+01      1s
       9       7582  -3.5000000e+01  -1.3836462e+01      1s
      10       8256  -3.5000000e+01  -1.3915661e+01      1s

Sifting complete


Root relaxation: objective 3.500000e+01, 10948 iterations, 0.83 seconds (0.69 work units)
Total elapsed time = 5.68s (DegenMoves)

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

     0     0   35.00000    0  387    7.00000   35.00000   400%     -    6s
H    0     0                       8.0000000   35.00000   337%     -    6s
     0     0   35.00000    0  508    8.00000   35.00000   337%     -   11s
     0     0   35.00000    0  493    8.00000   35.00000   337%     -   13s
     0     0   35.00000    0  447    8.00000   35.00000   337%     -   24s
H    0     0                       9.0000000   35.00000   289%     -   24s
     0     0   35.00000    0  415    9.00000   35.00000   289%     -   25s
     0     0   35.00000    0  293    9.00000   35.00000   289%     -   40s
     0     0   35.00000    0  269    9.00000   35.00000   289%     -   41s
     0     0   35.00000    0  389    9.00000   35.00000   289%     -   50s

Cutting planes:
  Cover: 30
  Clique: 52
  MIR: 121
  StrongCG: 1
  GUB cover: 4
  Zero half: 43
  RLT: 64
  BQP: 6

Explored 1 nodes (48193 simplex iterations) in 50.05 seconds (51.29 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 9 8 7 1 

Time limit reached
Best objective 9.000000000000e+00, best bound 3.500000000000e+01, gap 288.8889%

Wrote result file './lp_solutions/grafo1804.19.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 14:50:24 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1804.19.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/grafo1804.19.lp
Reading time = 0.17 seconds
: 101128 rows, 857 columns, 304047 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 101128 rows, 857 columns and 304047 nonzeros
Model fingerprint: 0x8aef9fd7
Variable types: 28 continuous, 829 integer (829 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 1.0000000
Presolve removed 51045 rows and 9 columns
Presolve time: 0.81s
Presolved: 50083 rows, 848 columns, 151069 nonzeros
Variable types: 0 continuous, 848 integer (820 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 848 rows, 50931 columns, 151917 nonzeros


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

    Iter     Pivots    Primal Obj      Dual Obj        Time
       0        201    -infinity     -1.0000000e+00      1s
       1       2411  -2.8666941e+02  -2.3668393e+00      1s
       2       3171  -2.8666941e+02  -8.1540894e+00      1s
       3       3972  -6.3076923e+01  -8.8333075e+00      1s
       4       4558  -3.7057692e+01  -8.8844169e+00      1s
       5       5074  -3.5000000e+01  -1.0042749e+01      1s
       6       5626  -3.5000000e+01  -1.0136409e+01      1s
       7       6300  -3.5000000e+01  -1.0558723e+01      1s
       8       6956  -3.5000000e+01  -1.1896918e+01      1s
       9       7582  -3.5000000e+01  -1.3836462e+01      1s
      10       8256  -3.5000000e+01  -1.3915661e+01      2s

Sifting complete


Root relaxation: objective 3.500000e+01, 10948 iterations, 0.89 seconds (0.69 work units)
Total elapsed time = 5.84s (DegenMoves)

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

     0     0   35.00000    0  387    7.00000   35.00000   400%     -    6s
H    0     0                       8.0000000   35.00000   337%     -    6s
     0     0   35.00000    0  508    8.00000   35.00000   337%     -   12s
     0     0   35.00000    0  493    8.00000   35.00000   337%     -   13s
     0     0   35.00000    0  447    8.00000   35.00000   337%     -   24s
H    0     0                       9.0000000   35.00000   289%     -   24s
     0     0   35.00000    0  415    9.00000   35.00000   289%     -   25s
     0     0   35.00000    0  293    9.00000   35.00000   289%     -   41s
     0     0   35.00000    0  269    9.00000   35.00000   289%     -   42s
     0     0   35.00000    0  501    9.00000   35.00000   289%     -   50s

Cutting planes:
  Cover: 30
  Clique: 52
  MIR: 121
  StrongCG: 1
  GUB cover: 4
  Zero half: 43
  RLT: 64
  BQP: 6

Explored 1 nodes (46680 simplex iterations) in 50.05 seconds (49.27 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 9 8 7 1 

Time limit reached
Best objective 9.000000000000e+00, best bound 3.500000000000e+01, gap 288.8889%

Wrote result file './lp_solutions/grafo1804.19.sol'

