
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:48:07 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6320.49.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/grafo6320.49.lp
Reading time = 0.16 seconds
: 104779 rows, 2988 columns, 316958 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 104779 rows, 2988 columns and 316958 nonzeros
Model fingerprint: 0xc144e958
Variable types: 55 continuous, 2933 integer (2933 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 9755 rows and 2 columns
Presolve time: 0.59s
Presolved: 95024 rows, 2986 columns, 288031 nonzeros
Variable types: 0 continuous, 2986 integer (2931 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 2962 rows, 97986 columns, 291017 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21170    4.8907385e+01   0.000000e+00   4.635726e+04      5s
   40340    4.8898373e+01   0.000000e+00   1.265140e+03     10s
   45320    4.9000000e+01   0.000000e+00   0.000000e+00     11s
   45320    4.9000000e+01   0.000000e+00   0.000000e+00     11s
   45320    4.9000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 4.900000e+01, 45320 iterations, 10.58 seconds (9.40 work units)
Total elapsed time = 22.01s (DegenMoves)

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

     0     0   49.00000    0  559   12.00000   49.00000   308%     -   24s
H    0     0                      13.0000000   49.00000   277%     -   24s
     0     0   49.00000    0  697   13.00000   49.00000   277%     -   33s
     0     0   49.00000    0  686   13.00000   49.00000   277%     -   34s
     0     0   49.00000    0  806   13.00000   49.00000   277%     -   50s

Cutting planes:
  Gomory: 12
  Lift-and-project: 42
  Cover: 24
  Clique: 5
  MIR: 136
  StrongCG: 1
  Zero half: 40
  RLT: 39

Explored 1 nodes (75575 simplex iterations) in 50.05 seconds (47.25 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 13 12 

Time limit reached
Best objective 1.300000000000e+01, best bound 4.900000000000e+01, gap 276.9231%

Wrote result file './lp_solutions/grafo6320.49.sol'

