
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 05:28:57 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6464.42.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/grafo6464.42.lp
Reading time = 0.16 seconds
: 92143 rows, 2569 columns, 278770 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 92143 rows, 2569 columns and 278770 nonzeros
Model fingerprint: 0x066c74b4
Variable types: 52 continuous, 2517 integer (2517 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 14966 rows and 0 columns
Presolve time: 0.50s
Presolved: 77177 rows, 2569 columns, 234289 nonzeros
Variable types: 0 continuous, 2569 integer (2517 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2545 rows, 79722 columns, 236858 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22144    5.8925769e+01   0.000000e+00   3.781358e+04      5s
   42180    5.8911892e+01   0.000000e+00   5.091449e+03     10s
   62149    5.8908168e+01   0.000000e+00   1.373952e+01     15s
   64228    5.9000000e+01   0.000000e+00   0.000000e+00     16s
   64228    5.9000000e+01   0.000000e+00   0.000000e+00     16s
   64228    5.9000000e+01   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 5.900000e+01, 64228 iterations, 14.89 seconds (12.70 work units)
Total elapsed time = 33.04s (DegenMoves)
Total elapsed time = 36.48s (DegenMoves)
Total elapsed time = 42.83s (DegenMoves)

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

     0     0   59.00000    0  851   10.00000   59.00000   490%     -   43s
H    0     0                      11.0000000   59.00000   436%     -   43s
     0     0          -    0        11.00000   59.00000   436%     -   50s

Cutting planes:
  Gomory: 22
  Cover: 31
  MIR: 122
  Zero half: 13
  RLT: 40

Explored 1 nodes (91295 simplex iterations) in 50.01 seconds (51.59 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 11 10 

Time limit reached
Best objective 1.100000000000e+01, best bound 5.900000000000e+01, gap 436.3636%

Wrote result file './lp_solutions/grafo6464.42.sol'

