ProcessModel analyse_requirements {
    Start start {}
    Finish finish {}

    Exec revise_req {
        name = "revise_req"
    }
    Exec make_initial_models {
        name = "make_initial_models"
    }

    Fork fork1 {}

    Exec revise_plant {
        name = "revise_plant"
    }
    Exec revise_environment {
        name = "revise_environment"
    }
    Exec revise_control {
        name = "revise_control"
    }
    Exec revise_query {
        name = "revise_query"
    }
    Exec revise_architecture {
        name = "revise_architecture"
    }

    Exec plant_to_EPN {
        name = "plant_to_EPN"
    }
    Exec print_plant_EPN{
        name = "epn_print"
    }
    Exec environment_to_EPN {
        name = "environment_to_EPN"
    }
    Exec print_env_EPN{
        name = "epn_print"
    }

    Exec control_to_EPN {
        name = "control_to_EPN"
    }
    Exec print_control_EPN{
        name = "epn_print"
    }

    Join join2 {}

    Exec combine_EPN {
        name = "combine_EPN"
    }

    Exec print_pn {
        name = "pn_print"
    }

    Exec EPN_to_PN {
        name = "EPN_to_PN"
    }

    Exec analyse {
        name = "reachability"
    }

    Join join3 {}

    Exec match {
        name = "match"
    }

    Exec bfs {
        name = "bfs"
    }

    Decision found {}

    Data req {
        name = "requirements"
        type = "Requirements"
    }
    Data plant_model {
        name = "plant_model"
        type = "PW_Plant"
    }
    Data environment_model {
        name = "environment_model"
        type = "PW_Environment"
    }
    Data control_model {
        name = "control_model"
        type = "PW_Control"
    }
    Data plant_EPN {
        name = "plant_EPN"
        type = "Encapsulated_PetriNet"
    }
    Data control_EPN {
        name = "control_EPN"
        type = "Encapsulated_PetriNet"
    }
    Data environment_EPN {
        name = "environment_EPN"
        type = "Encapsulated_PetriNet"
    }
    Data merged_EPN {
        name = "merged_EPN"
        type = "Encapsulated_PetriNet"
    }
    Data pn {
        name = "pn"
        type = "PetriNet"
    }
    Data reachability_graph {
        name = "reachability"
        type = "ReachabilityGraph"
    }
    Data query {
        name = "query"
        type = "Query"
    }
    Data architecture {
        name = "architecture"
        type = "Architecture"
    }

    Next (start, make_initial_models) {}
    Next (make_initial_models, revise_req) {}
    Next (revise_req, fork1) {}
    Next (fork1, revise_plant) {}
    Next (fork1, revise_environment) {}
    Next (fork1, revise_control) {}
    Next (fork1, revise_query) {}
    Next (fork1, revise_architecture) {}
    Next (revise_plant, plant_to_EPN) {}
    Next (revise_environment, environment_to_EPN) {}
    Next (revise_control, control_to_EPN) {}
    Next (plant_to_EPN, print_plant_EPN) {}
    Next (print_plant_EPN, join2) {}
    Next (environment_to_EPN, print_env_EPN) {}
    Next (print_env_EPN, join2) {}
    Next (control_to_EPN, print_control_EPN) {}
    Next (print_control_EPN, join2) {}
    Next (revise_architecture, join2) {}
    Next (join2, combine_EPN) {}
    Next (combine_EPN, print_pn) {}
    Next (print_pn, analyse) {}
    Next (analyse, join3) {}
    Next (revise_query, join3) {}
    Next (join3, match) {}
    Next (match, found) {}
    Then (found, bfs) {}
    Next (bfs, fork1) {}
    Else (found, finish) {}

    Consumes (revise_req, req) {
        name = "requirements"
    }
    Produces (revise_req, req) {
    }

    Produces (make_initial_models, plant_model) {
    }
    Produces (make_initial_models, environment_model) {
    }
    Produces (make_initial_models, control_model) {
    }
    Produces (make_initial_models, query) {
    }
    Produces (make_initial_models, architecture) {
    }
    Produces (make_initial_models, req) {
    }

    Consumes (revise_plant, req) {
        name = "requirements"
    }
    Consumes (revise_environment, req) {
        name = "requirements"
    }
    Consumes (revise_control, req) {
        name = "requirements"
    }
    Consumes (revise_query, req) {
        name = "requirements"
    }
    Consumes (revise_architecture, req) {
        name = "requirements"
    }

    Consumes (revise_plant, plant_model) {
        name = "plant"
    }
    Consumes (revise_environment, environment_model) {
        name = "environment"
    }
    Consumes (revise_control, control_model) {
        name = "control"
    }
    Consumes (revise_query, query) {
        name = "query"
    }
    Consumes (revise_architecture, architecture) {
        name = "architecture"
    }
    Produces (revise_plant, plant_model) {
    }
    Produces (revise_control, control_model) {
    }
    Produces (revise_environment, environment_model) {
    }
    Produces (revise_query, query) {
    }
    Produces (revise_architecture, architecture) {
    }

    Consumes (plant_to_EPN, plant_model) {
        name = "plant_model"
    }
    Produces (plant_to_EPN, plant_EPN) {
    }
    Consumes (environment_to_EPN, environment_model) {
        name = "environment_model"
    }
    Produces (environment_to_EPN, environment_EPN) {
    }
    Consumes (control_to_EPN, control_model) {
        name = "control_model"
    }
    Produces (control_to_EPN, control_EPN) {
    }

    Consumes (combine_EPN, plant_EPN) {
        name = "epn_1"
    }
    Consumes (combine_EPN, environment_EPN) {
        name = "epn_2"
    }
    Consumes (combine_EPN, control_EPN) {
        name = "epn_3"
    }
    Consumes (combine_EPN, architecture) {
        name = "architecture"
    }
    Produces (combine_EPN, pn) {
    }

    Consumes (analyse, pn) {
        name = "pn"
    }
    Produces (analyse, reachability_graph) {
    }

    Consumes (match, reachability_graph) {
        name = "reachability_graph"
    }
    Consumes (match, query) {
        name = "query"
    }
    Produces (match, reachability_graph) {
    }

    Consumes (bfs, reachability_graph) {
        name = "reachability_graph"
    }

    Consumes (print_pn, pn) {
        name = "pn"
    }

    Consumes (print_plant_EPN, plant_EPN){
        name = "epn"
    }
    Consumes (print_control_EPN, control_EPN){
        name = "epn"
    }
    Consumes (print_env_EPN, environment_EPN){
        name = "epn"
    }
}