lib/solvers/glpk.rb in rulp-0.0.16 vs lib/solvers/glpk.rb in rulp-0.0.17

@@ -1,9 +1,9 @@
 class Glpk < Solver
   def solve
     command = "#{executable} --lp #{@filename} %s --cuts --write #{@outfile}"
     command %= options[:gap] ? "--mipgap #{options[:gap]}" : ""
-    system(command)
+    exec(command)
   end
 
   def self.executable
     :glpsol
   end
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