
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 04:12:38 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1528.50.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/grafo1528.50.lp
Reading time = 0.16 seconds
: 74066 rows, 2482 columns, 223914 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 74066 rows, 2482 columns and 223914 nonzeros
Model fingerprint: 0xa8a7b499
Variable types: 45 continuous, 2437 integer (2437 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 4193 rows and 18 columns
Presolve time: 0.71s
Presolved: 69873 rows, 2464 columns, 211681 nonzeros
Variable types: 0 continuous, 2464 integer (2419 binary)
Root relaxation presolved: 2457 rows, 72330 columns, 214145 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16089    3.3945822e+01   0.000000e+00   2.585589e+03      5s
   19495    3.4000000e+01   0.000000e+00   0.000000e+00      6s
   19495    3.4000000e+01   0.000000e+00   0.000000e+00      6s
   19495    3.4000000e+01   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 3.400000e+01, 19495 iterations, 5.55 seconds (3.37 work units)
Total elapsed time = 16.39s (DegenMoves)

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

     0     0   34.00000    0  389          -   34.00000      -     -   19s
H    0     0                       9.0000000   34.00000   278%     -   23s
     0     0   34.00000    0  770    9.00000   34.00000   278%     -   34s
H    0     0                      11.0000000   34.00000   209%     -   35s
     0     0   34.00000    0  783   11.00000   34.00000   209%     -   35s
     0     0   34.00000    0  719   11.00000   34.00000   209%     -   50s

Cutting planes:
  Gomory: 4
  Lift-and-project: 24
  Cover: 17
  Clique: 6
  MIR: 105
  Zero half: 38
  RLT: 51
  BQP: 1

Explored 1 nodes (44837 simplex iterations) in 50.11 seconds (29.37 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 11 9 

Time limit reached
Best objective 1.100000000000e+01, best bound 3.400000000000e+01, gap 209.0909%

Wrote result file './lp_solutions/grafo1528.50.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:56:31 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1528.50.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/grafo1528.50.lp
Reading time = 0.12 seconds
: 74066 rows, 2482 columns, 223914 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 74066 rows, 2482 columns and 223914 nonzeros
Model fingerprint: 0xa8a7b499
Variable types: 45 continuous, 2437 integer (2437 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 4193 rows and 18 columns
Presolve time: 0.46s
Presolved: 69873 rows, 2464 columns, 211681 nonzeros
Variable types: 0 continuous, 2464 integer (2419 binary)
Root relaxation presolved: 2457 rows, 72330 columns, 214145 nonzeros


Root relaxation: objective 3.400000e+01, 19495 iterations, 3.47 seconds (3.37 work units)
Total elapsed time = 10.79s (DegenMoves)

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

     0     0   34.00000    0  389          -   34.00000      -     -   13s
H    0     0                       9.0000000   34.00000   278%     -   15s
     0     0   34.00000    0  770    9.00000   34.00000   278%     -   22s
H    0     0                      11.0000000   34.00000   209%     -   23s
     0     0   34.00000    0  783   11.00000   34.00000   209%     -   23s
     0     0   34.00000    0  591   11.00000   34.00000   209%     -   50s

Cutting planes:
  Gomory: 4
  Lift-and-project: 24
  Cover: 17
  Clique: 6
  MIR: 105
  Zero half: 38
  RLT: 51
  BQP: 1

Explored 1 nodes (62348 simplex iterations) in 50.07 seconds (48.93 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 11 9 

Time limit reached
Best objective 1.100000000000e+01, best bound 3.400000000000e+01, gap 209.0909%

Wrote result file './lp_solutions/grafo1528.50.sol'

