
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 03:09:57 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6578.38.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/grafo6578.38.lp
Reading time = 0.24 seconds
: 147284 rows, 2277 columns, 443884 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 147284 rows, 2277 columns and 443884 nonzeros
Model fingerprint: 0x796c59bf
Variable types: 48 continuous, 2229 integer (2229 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 53420 rows and 26 columns
Presolve time: 1.06s
Presolved: 93864 rows, 2251 columns, 284031 nonzeros
Variable types: 0 continuous, 2251 integer (2203 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2248 rows, 96112 columns, 286282 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21180    5.5906929e+01   0.000000e+00   8.080038e+04      5s
   47056    5.5780080e+01   0.000000e+00   1.162949e+04     10s
   72466    5.5768214e+01   0.000000e+00   2.774284e+02     15s
   76599    5.6000000e+01   0.000000e+00   0.000000e+00     16s
   76599    5.6000000e+01   0.000000e+00   0.000000e+00     16s
   76599    5.6000000e+01   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 5.600000e+01, 76599 iterations, 14.64 seconds (11.05 work units)
Total elapsed time = 27.03s (DegenMoves)

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

     0     0   56.00000    0  541   10.00000   56.00000   460%     -   29s
     0     0   56.00000    0  933   10.00000   56.00000   460%     -   44s
     0     0   56.00000    0  860   10.00000   56.00000   460%     -   47s
     0     0          -    0        10.00000   56.00000   460%     -   50s

Cutting planes:
  Gomory: 4
  Lift-and-project: 1
  Cover: 13
  Clique: 27
  MIR: 189
  Zero half: 115
  RLT: 71

Explored 1 nodes (98408 simplex iterations) in 50.04 seconds (49.73 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 10 

Time limit reached
Best objective 1.000000000000e+01, best bound 5.600000000000e+01, gap 460.0000%

Wrote result file './lp_solutions/grafo6578.38.sol'

