
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:49:26 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo9860.40.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/grafo9860.40.lp
Reading time = 0.14 seconds
: 88737 rows, 2258 columns, 268185 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 88737 rows, 2258 columns and 268185 nonzeros
Model fingerprint: 0x464c6349
Variable types: 46 continuous, 2212 integer (2212 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 22455 rows and 21 columns
Presolve time: 0.53s
Presolved: 66282 rows, 2237 columns, 201327 nonzeros
Variable types: 0 continuous, 2237 integer (2191 binary)
Root relaxation presolved: 2228 rows, 68510 columns, 203564 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24412    4.9908332e+01   0.000000e+00   1.375733e+04      5s
   47970    4.9897513e+01   0.000000e+00   2.415374e+02     10s
   51803    5.0000000e+01   0.000000e+00   0.000000e+00     11s
   51803    5.0000000e+01   0.000000e+00   0.000000e+00     11s
   51803    5.0000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 5.000000e+01, 51803 iterations, 10.19 seconds (9.66 work units)
Total elapsed time = 18.40s (DegenMoves)
Total elapsed time = 21.80s (DegenMoves)

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

     0     0   50.00000    0  501          -   50.00000      -     -   22s
H    0     0                      12.0000000   50.00000   317%     -   24s
H    0     0                      13.0000000   50.00000   285%     -   24s
     0     0   50.00000    0  722   13.00000   50.00000   285%     -   30s
     0     0   50.00000    0  668   13.00000   50.00000   285%     -   31s
     0     0   50.00000    0  683   13.00000   50.00000   285%     -   50s

Cutting planes:
  Gomory: 6
  Lift-and-project: 29
  Cover: 11
  Clique: 11
  MIR: 153
  Zero half: 63
  RLT: 55

Explored 1 nodes (84626 simplex iterations) in 50.06 seconds (48.14 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 5.000000000000e+01, gap 284.6154%

Wrote result file './lp_solutions/grafo9860.40.sol'

