
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 07:28:02 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5284.39.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/grafo5284.39.lp
Reading time = 0.18 seconds
: 91640 rows, 2439 columns, 277175 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 91640 rows, 2439 columns and 277175 nonzeros
Model fingerprint: 0xb1c62cbe
Variable types: 52 continuous, 2387 integer (2387 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 17648 rows and 0 columns
Presolve time: 0.79s
Presolved: 73992 rows, 2439 columns, 224662 nonzeros
Variable types: 0 continuous, 2439 integer (2387 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2400 rows, 76392 columns, 227101 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16158    5.8957941e+01   0.000000e+00   8.487975e+04      5s
   33193    5.8934895e+01   0.000000e+00   2.341986e+04     10s
   49853    5.8928192e+01   0.000000e+00   2.398605e+04     15s
   63427    5.9000000e+01   0.000000e+00   0.000000e+00     19s
   63427    5.9000000e+01   0.000000e+00   0.000000e+00     19s
   63427    5.9000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 5.900000e+01, 63427 iterations, 18.40 seconds (11.03 work units)
Total elapsed time = 44.34s (DegenMoves)

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

     0     0   59.00000    0 1027    9.00000   59.00000   556%     -   50s

Explored 1 nodes (83302 simplex iterations) in 50.04 seconds (38.67 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 1 

Time limit reached
Best objective 9.000000000000e+00, best bound 5.900000000000e+01, gap 555.5556%

Wrote result file './lp_solutions/grafo5284.39.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 03:20:22 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5284.39.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/grafo5284.39.lp
Reading time = 0.15 seconds
: 91640 rows, 2439 columns, 277175 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 91640 rows, 2439 columns and 277175 nonzeros
Model fingerprint: 0xb1c62cbe
Variable types: 52 continuous, 2387 integer (2387 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 17648 rows and 0 columns
Presolve time: 0.50s
Presolved: 73992 rows, 2439 columns, 224662 nonzeros
Variable types: 0 continuous, 2439 integer (2387 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2400 rows, 76392 columns, 227101 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23673    5.8943594e+01   0.000000e+00   3.774629e+04      5s
   46453    5.8929028e+01   0.000000e+00   1.216428e+04     10s
   63427    5.9000000e+01   0.000000e+00   0.000000e+00     14s
   63427    5.9000000e+01   0.000000e+00   0.000000e+00     14s
   63427    5.9000000e+01   0.000000e+00   0.000000e+00     14s

Root relaxation: objective 5.900000e+01, 63427 iterations, 13.34 seconds (11.03 work units)
Total elapsed time = 34.42s (DegenMoves)
Total elapsed time = 39.08s (DegenMoves)
Total elapsed time = 41.85s (DegenMoves)

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

     0     0   59.00000    0  865    9.00000   59.00000   556%     -   43s
H    0     0                      11.0000000   59.00000   436%     -   43s
     0     0          -    0        11.00000   59.00000   436%     -   50s

Cutting planes:
  Gomory: 32
  Cover: 8
  Clique: 1
  MIR: 101
  Zero half: 12
  RLT: 35

Explored 1 nodes (89117 simplex iterations) in 50.06 seconds (49.85 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 11 9 1 

Time limit reached
Best objective 1.100000000000e+01, best bound 5.900000000000e+01, gap 436.3636%

Wrote result file './lp_solutions/grafo5284.39.sol'

