
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 06:11:42 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3525.40.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/grafo3525.40.lp
Reading time = 0.21 seconds
: 106474 rows, 2242 columns, 321306 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 106474 rows, 2242 columns and 321306 nonzeros
Model fingerprint: 0x68c94d64
Variable types: 47 continuous, 2195 integer (2195 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 31330 rows and 18 columns
Presolve time: 1.15s
Presolved: 75144 rows, 2224 columns, 227704 nonzeros
Variable types: 0 continuous, 2224 integer (2177 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2218 rows, 77362 columns, 229928 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17980    5.5816725e+01   0.000000e+00   2.492415e+04      5s
   35767    5.5784166e+01   0.000000e+00   8.030895e+03     10s
   47668    5.6000000e+01   0.000000e+00   0.000000e+00     14s
   47668    5.6000000e+01   0.000000e+00   0.000000e+00     14s
   47668    5.6000000e+01   0.000000e+00   0.000000e+00     14s

Root relaxation: objective 5.600000e+01, 47668 iterations, 12.33 seconds (6.50 work units)
Total elapsed time = 26.53s (DegenMoves)
Total elapsed time = 46.59s (DegenMoves)

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

     0     0   56.00000    0  670   10.00000   56.00000   460%     -   50s

Explored 1 nodes (74918 simplex iterations) in 50.03 seconds (50.22 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 1 

Time limit reached
Best objective 1.000000000000e+01, best bound 5.600000000000e+01, gap 460.0000%

Wrote result file './lp_solutions/grafo3525.40.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 04:07:39 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3525.40.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/grafo3525.40.lp
Reading time = 0.17 seconds
: 106474 rows, 2242 columns, 321306 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 106474 rows, 2242 columns and 321306 nonzeros
Model fingerprint: 0x68c94d64
Variable types: 47 continuous, 2195 integer (2195 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 31330 rows and 18 columns
Presolve time: 0.70s
Presolved: 75144 rows, 2224 columns, 227704 nonzeros
Variable types: 0 continuous, 2224 integer (2177 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2218 rows, 77362 columns, 229928 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25966    5.5793745e+01   0.000000e+00   5.509135e+04      5s
   47668    5.6000000e+01   0.000000e+00   0.000000e+00      9s
   47668    5.6000000e+01   0.000000e+00   0.000000e+00      9s
   47668    5.6000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 5.600000e+01, 47668 iterations, 8.58 seconds (6.50 work units)
Total elapsed time = 19.71s (DegenMoves)
Total elapsed time = 36.05s (DegenMoves)
Total elapsed time = 40.19s (DegenMoves)

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

     0     0   56.00000    0  469   10.00000   56.00000   460%     -   42s
     0     0          -    0        10.00000   56.00000   460%     -   50s

Cutting planes:
  Gomory: 39
  Cover: 49
  Clique: 3
  MIR: 170
  GUB cover: 3
  Zero half: 20
  RLT: 56

Explored 1 nodes (79488 simplex iterations) in 50.09 seconds (60.80 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 1 

Time limit reached
Best objective 1.000000000000e+01, best bound 5.600000000000e+01, gap 460.0000%

Wrote result file './lp_solutions/grafo3525.40.sol'

