
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 06:51:09 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3989.43.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/grafo3989.43.lp
Reading time = 0.18 seconds
: 81252 rows, 2485 columns, 245900 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 81252 rows, 2485 columns and 245900 nonzeros
Model fingerprint: 0x4a4c405e
Variable types: 51 continuous, 2434 integer (2434 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 9196 rows and 0 columns
Presolve time: 0.74s
Presolved: 72056 rows, 2485 columns, 218685 nonzeros
Variable types: 0 continuous, 2485 integer (2434 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2440 rows, 74496 columns, 221170 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15062    4.7958460e+01   0.000000e+00   7.870447e+04      5s
   32119    4.7929597e+01   0.000000e+00   1.820175e+04     10s
   45719    4.7923153e+01   0.000000e+00   2.065140e+04     15s
   58981    4.8000000e+01   0.000000e+00   0.000000e+00     19s
   58981    4.8000000e+01   0.000000e+00   0.000000e+00     19s
   58981    4.8000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 4.800000e+01, 58981 iterations, 18.33 seconds (10.55 work units)
Total elapsed time = 38.57s (DegenMoves)
Total elapsed time = 44.16s (DegenMoves)

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

     0     0   48.00000    0  875    7.00000   48.00000   586%     -   50s

Explored 1 nodes (82432 simplex iterations) in 50.03 seconds (40.49 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 4.800000000000e+01, gap 585.7143%

Wrote result file './lp_solutions/grafo3989.43.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 05:55:46 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3989.43.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/grafo3989.43.lp
Reading time = 0.13 seconds
: 81252 rows, 2485 columns, 245900 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 81252 rows, 2485 columns and 245900 nonzeros
Model fingerprint: 0x4a4c405e
Variable types: 51 continuous, 2434 integer (2434 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 9196 rows and 0 columns
Presolve time: 0.44s
Presolved: 72056 rows, 2485 columns, 218685 nonzeros
Variable types: 0 continuous, 2485 integer (2434 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2440 rows, 74496 columns, 221170 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22599    4.7940206e+01   0.000000e+00   3.266348e+04      5s
   45039    4.7923326e+01   0.000000e+00   1.870927e+04     10s
   58981    4.8000000e+01   0.000000e+00   0.000000e+00     13s
   58981    4.8000000e+01   0.000000e+00   0.000000e+00     13s
   58981    4.8000000e+01   0.000000e+00   0.000000e+00     13s

Root relaxation: objective 4.800000e+01, 58981 iterations, 12.69 seconds (10.55 work units)
Total elapsed time = 29.13s (DegenMoves)
Total elapsed time = 33.43s (DegenMoves)
Total elapsed time = 40.76s (DegenMoves)

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

     0     0   48.00000    0  679    7.00000   48.00000   586%     -   44s
H    0     0                      12.0000000   48.00000   300%     -   46s
     0     0          -    0        12.00000   48.00000   300%     -   50s

Cutting planes:
  Gomory: 35
  Cover: 10
  MIR: 85
  StrongCG: 1
  Zero half: 9
  RLT: 51

Explored 1 nodes (91920 simplex iterations) in 50.08 seconds (55.67 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 7 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.800000000000e+01, gap 300.0000%

Wrote result file './lp_solutions/grafo3989.43.sol'

