
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 04:02:33 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1402.48.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/grafo1402.48.lp
Reading time = 0.17 seconds
: 82636 rows, 2514 columns, 249781 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 82636 rows, 2514 columns and 249781 nonzeros
Model fingerprint: 0xa0062a26
Variable types: 47 continuous, 2467 integer (2467 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 9208 rows and 1 columns
Presolve time: 0.92s
Presolved: 73428 rows, 2513 columns, 222542 nonzeros
Variable types: 0 continuous, 2513 integer (2466 binary)
Root relaxation presolved: 2486 rows, 75914 columns, 225055 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16307    4.1928270e+01   0.000000e+00   1.138265e+04      5s
   31346    4.2000000e+01   0.000000e+00   0.000000e+00     10s
   31346    4.2000000e+01   0.000000e+00   0.000000e+00     10s
   31346    4.2000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 4.200000e+01, 31346 iterations, 8.64 seconds (5.22 work units)
Total elapsed time = 18.29s (DegenMoves)
Total elapsed time = 20.05s (DegenMoves)

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

     0     0   42.00000    0  482          -   42.00000      -     -   20s
H    0     0                       5.0000000   42.00000   740%     -   24s
     0     0   42.00000    0  702    5.00000   42.00000   740%     -   30s
H    0     0                       7.0000000   42.00000   500%     -   31s
     0     0   42.00000    0  697    7.00000   42.00000   500%     -   32s
     0     0   42.00000    0  731    7.00000   42.00000   500%     -   50s

Cutting planes:
  Gomory: 3
  Lift-and-project: 29
  Cover: 20
  Clique: 2
  MIR: 118
  Zero half: 18
  RLT: 60
  PSD: 1

Explored 1 nodes (54451 simplex iterations) in 50.13 seconds (29.25 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 5 

Time limit reached
Best objective 7.000000000000e+00, best bound 4.200000000000e+01, gap 500.0000%

Wrote result file './lp_solutions/grafo1402.48.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:26:19 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1402.48.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/grafo1402.48.lp
Reading time = 0.18 seconds
: 82636 rows, 2514 columns, 249781 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 82636 rows, 2514 columns and 249781 nonzeros
Model fingerprint: 0xa0062a26
Variable types: 47 continuous, 2467 integer (2467 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 9208 rows and 1 columns
Presolve time: 0.45s
Presolved: 73428 rows, 2513 columns, 222542 nonzeros
Variable types: 0 continuous, 2513 integer (2466 binary)
Root relaxation presolved: 2486 rows, 75914 columns, 225055 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25487    4.1919366e+01   0.000000e+00   1.018055e+03      5s
   31346    4.2000000e+01   0.000000e+00   0.000000e+00      6s
   31346    4.2000000e+01   0.000000e+00   0.000000e+00      6s
   31346    4.2000000e+01   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 4.200000e+01, 31346 iterations, 5.78 seconds (5.22 work units)
Total elapsed time = 12.87s (DegenMoves)

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

     0     0   42.00000    0  482          -   42.00000      -     -   14s
H    0     0                       5.0000000   42.00000   740%     -   16s
     0     0   42.00000    0  702    5.00000   42.00000   740%     -   20s
H    0     0                       7.0000000   42.00000   500%     -   21s
     0     0   42.00000    0  697    7.00000   42.00000   500%     -   21s
     0     0   42.00000    0  702    7.00000   42.00000   500%     -   50s

Cutting planes:
  Gomory: 3
  Lift-and-project: 29
  Cover: 20
  Clique: 2
  MIR: 118
  Zero half: 18
  RLT: 60
  PSD: 1

Explored 1 nodes (68515 simplex iterations) in 50.06 seconds (48.41 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 5 

Time limit reached
Best objective 7.000000000000e+00, best bound 4.200000000000e+01, gap 500.0000%

Wrote result file './lp_solutions/grafo1402.48.sol'

