
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 04:05:05 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1433.47.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/grafo1433.47.lp
Reading time = 0.24 seconds
: 116170 rows, 2915 columns, 351115 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 116170 rows, 2915 columns and 351115 nonzeros
Model fingerprint: 0x63a19d36
Variable types: 55 continuous, 2860 integer (2860 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, 6e+01]
Presolve removed 18032 rows and 42 columns
Presolve time: 1.29s
Presolved: 98138 rows, 2873 columns, 297466 nonzeros
Variable types: 0 continuous, 2873 integer (2818 binary)
Root relaxation presolved: 2873 rows, 101011 columns, 300339 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   10987    4.8694020e+01   0.000000e+00   5.828812e+04      5s
   26066    4.8628046e+01   0.000000e+00   3.798552e+04     10s
   39971    4.8615418e+01   0.000000e+00   7.633373e+03     15s
   52247    4.8612608e+01   0.000000e+00   8.738474e+01     20s
   55794    4.9000000e+01   0.000000e+00   0.000000e+00     22s
   55794    4.9000000e+01   0.000000e+00   0.000000e+00     22s

Root relaxation: objective 4.900000e+01, 55794 iterations, 20.04 seconds (12.87 work units)
Total elapsed time = 43.99s (DegenMoves)
Total elapsed time = 45.50s (DegenMoves)

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

     0     0   49.00000    0  640          -   49.00000      -     -   46s
H    0     0                       6.0000000   49.00000   717%     -   50s

Cutting planes:
  Cover: 39
  Clique: 11
  MIR: 163
  StrongCG: 2
  GUB cover: 18

Explored 1 nodes (70781 simplex iterations) in 50.07 seconds (34.59 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 6 

Time limit reached
Best objective 6.000000000000e+00, best bound 4.900000000000e+01, gap 716.6667%

Wrote result file './lp_solutions/grafo1433.47.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:08:42 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1433.47.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/grafo1433.47.lp
Reading time = 0.18 seconds
: 116170 rows, 2915 columns, 351115 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 116170 rows, 2915 columns and 351115 nonzeros
Model fingerprint: 0x63a19d36
Variable types: 55 continuous, 2860 integer (2860 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, 6e+01]
Presolve removed 18032 rows and 42 columns
Presolve time: 0.85s
Presolved: 98138 rows, 2873 columns, 297466 nonzeros
Variable types: 0 continuous, 2873 integer (2818 binary)
Root relaxation presolved: 2873 rows, 101011 columns, 300339 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17354    4.8652787e+01   0.000000e+00   4.756999e+04      5s
   35174    4.8618104e+01   0.000000e+00   2.297508e+03     10s
   53039    4.8612563e+01   0.000000e+00   1.419271e+02     15s
   55794    4.9000000e+01   0.000000e+00   0.000000e+00     16s
   55794    4.9000000e+01   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 4.900000e+01, 55794 iterations, 14.83 seconds (12.87 work units)
Total elapsed time = 34.44s (DegenMoves)
Total elapsed time = 35.12s (DegenMoves)

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

     0     0   49.00000    0  640          -   49.00000      -     -   36s
H    0     0                       6.0000000   49.00000   717%     -   40s
     0     0          -    0         6.00000   49.00000   717%     -   50s

Cutting planes:
  Gomory: 44
  Cover: 38
  Clique: 11
  MIR: 155
  StrongCG: 2
  GUB cover: 18
  Zero half: 86
  RLT: 40
  BQP: 3

Explored 1 nodes (76987 simplex iterations) in 50.02 seconds (45.08 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 6 

Time limit reached
Best objective 6.000000000000e+00, best bound 4.900000000000e+01, gap 716.6667%

Wrote result file './lp_solutions/grafo1433.47.sol'

