
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 03:50:12 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo11675.39.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/grafo11675.39.lp
Reading time = 0.15 seconds
: 91983 rows, 2121 columns, 277784 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 91983 rows, 2121 columns and 277784 nonzeros
Model fingerprint: 0x9e3d3154
Variable types: 46 continuous, 2075 integer (2075 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]
Found heuristic solution: objective 4.0000000
Presolve removed 25065 rows and 22 columns
Presolve time: 0.58s
Presolved: 66918 rows, 2099 columns, 202958 nonzeros
Variable types: 0 continuous, 2099 integer (2053 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2099 rows, 69017 columns, 205057 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25962    4.4718150e+01   0.000000e+00   4.893097e+03      5s
   43542    4.5000000e+01   0.000000e+00   0.000000e+00      8s
   43542    4.5000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.500000e+01, 43542 iterations, 7.69 seconds (6.49 work units)
Total elapsed time = 15.09s (DegenMoves)

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

     0     0   45.00000    0  500   11.00000   45.00000   309%     -   16s
H    0     0                      12.0000000   45.00000   275%     -   16s
     0     0   45.00000    0  831   12.00000   45.00000   275%     -   30s
     0     0   45.00000    0  812   12.00000   45.00000   275%     -   32s
     0     0   45.00000    0  586   12.00000   45.00000   275%     -   50s

Cutting planes:
  Gomory: 5
  Lift-and-project: 3
  Cover: 8
  Clique: 11
  MIR: 144
  Zero half: 88
  RLT: 69
  BQP: 3

Explored 1 nodes (75539 simplex iterations) in 50.08 seconds (45.71 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 12 11 4 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.500000000000e+01, gap 275.0000%

Wrote result file './lp_solutions/grafo11675.39.sol'

