Executing a process with multiple BusinessRulesTask is getting stuck in an infinite loop

Issue

• A successfully validated DRL is executed by a jbpm process. The execution stops at the node where the business rule task should be executed; the java process consumes all available CPU time and the BPM Suite execution is not possible for any other process.

• If the complete DRL is used, the behaviour described above occurs. If one of the rules is omitted, the rule execution works.

• Following is a simplified version of the rules.

rule r1 ruleflow-group "group1"
    salience 100
when                      
    $person: Person( $addressList : addresses ) 
    Address( zipCode == "10243" ) from $addressList
    $cheese : Cheese( )
then
    System.out.println("r1 executed");
end

rule r2 ruleflow-group "group1"
    salience 5
when                      
    $person: Person( $addressList : addresses ) 
    Address( zipCode == "10318" ) from $addressList
    $cheese : Cheese( )  
then
    System.out.println("r2 executed");
end