
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 05:52:23 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3270.41.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/grafo3270.41.lp
Reading time = 0.12 seconds
: 57919 rows, 1950 columns, 175254 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 57919 rows, 1950 columns and 175254 nonzeros
Model fingerprint: 0xbf8dcaa1
Variable types: 43 continuous, 1907 integer (1907 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 7074 rows and 33 columns
Presolve time: 0.71s
Presolved: 50845 rows, 1917 columns, 154360 nonzeros
Variable types: 0 continuous, 1917 integer (1874 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 27844 rows, 24918 columns, 108358 nonzeros


Root relaxation: objective 3.300000e+01, 4725 iterations, 3.67 seconds (2.41 work units)
Total elapsed time = 9.87s (DegenMoves)
Total elapsed time = 10.24s (DegenMoves)

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

     0     0   33.00000    0  563    5.00000   33.00000   560%     -   10s
H    0     0                       6.0000000   33.00000   450%     -   10s
H    0     0                       8.0000000   33.00000   312%     -   14s
     0     0   33.00000    0  598    8.00000   33.00000   312%     -   20s
     0     0   33.00000    0  581    8.00000   33.00000   312%     -   21s
H    0     0                       9.0000000   33.00000   267%     -   47s
     0     0   33.00000    0  717    9.00000   33.00000   267%     -   47s
     0     0   33.00000    0  709    9.00000   33.00000   267%     -   49s

Cutting planes:
  Gomory: 2
  Lift-and-project: 1
  Cover: 9
  Clique: 4
  MIR: 108
  StrongCG: 1
  GUB cover: 1
  Zero half: 14
  RLT: 24
  Relax-and-lift: 1
  BQP: 3
  PSD: 1

Explored 1 nodes (34097 simplex iterations) in 50.11 seconds (30.46 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 9 8 6 5 

Time limit reached
Best objective 9.000000000000e+00, best bound 3.300000000000e+01, gap 266.6667%

Wrote result file './lp_solutions/grafo3270.41.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 04:51:14 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3270.41.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/grafo3270.41.lp
Reading time = 0.09 seconds
: 57919 rows, 1950 columns, 175254 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 57919 rows, 1950 columns and 175254 nonzeros
Model fingerprint: 0xbf8dcaa1
Variable types: 43 continuous, 1907 integer (1907 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 7074 rows and 33 columns
Presolve time: 0.38s
Presolved: 50845 rows, 1917 columns, 154360 nonzeros
Variable types: 0 continuous, 1917 integer (1874 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 27844 rows, 24918 columns, 108358 nonzeros


Root relaxation: objective 3.300000e+01, 4725 iterations, 2.53 seconds (2.41 work units)
Total elapsed time = 6.96s (DegenMoves)

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

     0     0   33.00000    0  563    5.00000   33.00000   560%     -    7s
H    0     0                       6.0000000   33.00000   450%     -    7s
H    0     0                       8.0000000   33.00000   312%     -    9s
     0     0   33.00000    0  598    8.00000   33.00000   312%     -   13s
     0     0   33.00000    0  581    8.00000   33.00000   312%     -   14s
H    0     0                       9.0000000   33.00000   267%     -   32s
     0     0   33.00000    0  717    9.00000   33.00000   267%     -   32s
     0     0   33.00000    0  709    9.00000   33.00000   267%     -   33s
     0     0   33.00000    0  649    9.00000   33.00000   267%     -   50s

Cutting planes:
  Gomory: 2
  Lift-and-project: 1
  Cover: 9
  Clique: 4
  MIR: 105
  StrongCG: 1
  GUB cover: 1
  Zero half: 40
  RLT: 42
  Relax-and-lift: 1
  BQP: 2

Explored 1 nodes (51107 simplex iterations) in 50.06 seconds (45.66 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 9 8 6 5 

Time limit reached
Best objective 9.000000000000e+00, best bound 3.300000000000e+01, gap 266.6667%

Wrote result file './lp_solutions/grafo3270.41.sol'

