doc: update README

README.md

@@ -11,8 +11,7 @@ optimal solution of a graph from a `.dot` file. It provides the following
 functionalities:
 
 1. **Generate a Random Graph**: Users can specify the number of nodes, edges,
-and labels to generate a random, deterministic, and connected graph. This is
-achieved using the `generateRandomGraph` function in `Graph.cpp`.
+and labels to generate a random, deterministic, and connected graph.
 
 2. **Extract Optimal Solution from a .dot File**: Users can provide a `.dot`
 file to extract and optimize the graph.
@@ -20,14 +19,13 @@ file to extract and optimize the graph.
 After generating the graph or loading it from a file, the program performs the
 following steps:
 
-1. **Generate Regular Expression of the Graph**: The
-`RegularExpressionGeneration` function in `graph.cpp` is used to generate the
+1. **Generate Regular Expression of the Graph**: The tool generates the
 regular expression of the graph.
 
 2. **Extract All Paths from the Regular Expression**: All the paths of the graph
 are extracted from the regular expression.
 
-3. **Pass to the Linear Program**:
+3. **Pass to the Integer Linear Program**:
    - **Variables**: Paths of the graph.
    - **Constraints**: Labels representing transitions in the graph.
 
@@ -54,7 +52,8 @@ the selected paths.
 Make sure to install the necessary dependencies before running the program:
 
 - `gcc` >= 9.3.0
-- `cmake`
+- `cmake` >= 3.18
+- `ninja`
 
 ## Build
 
@@ -83,9 +82,9 @@ cd assets
 To generate a random graph, use the following options:
 
 ```sh
-./optlp  --nb-nodes <n> \
-         --nb-edges <m> \
-         --nb-labels <l>
+./optlp  random --nb-nodes <n> \
+                --nb-edges <m> \
+                --nb-labels <l>
 ```
 
 where:
@@ -97,7 +96,7 @@ where:
 **Example:**
 
 ```sh
-./optlp --nb-nodes 200 --nb-edges 100 --nb-labels 20
+./optlp random --nb-nodes 200 --nb-edges 100 --nb-labels 20
 ```
 
 ### Extracting the Optimal Solution from a .dot File
@@ -106,18 +105,18 @@ To extract the optimal solution of a graph from a `.dot` file, use the following
 option:
 
 ```sh
-./optlp --input-file <filename.dot> --output-folder <foldername>
+./optlp from-file --input-file <filename.dot> --output-folder <folder name>
 ```
 
 where:
 
 - `--input-file <filename.dot>`: Specifies the .dot file containing the graph.
-- `--output-folder <foldername>`: Specifies the folder containing the result.
+- `--output-folder <folder name>`: Specifies the folder containing the result.
 
 **Example:**
 
 ```sh
-./optlp --input-file ./toys_examples/graph3.dot --output-folder ./result/
+./optlp from-file --input-file ./toys_examples/graph3.dot --output-folder ./result/
 ```
 
 ### Help
@@ -132,9 +131,14 @@ display a help message with usage instructions.
 The help message will display the following:
 
 ```sh
-/**************************************************************/
-/********************         help         ********************/
-/ -To generate a random graph: use the options --nb-nodes <n> --nb-edges <m> --nb-labels <l>
- -To extract the optimal solution of a .dot file: use the option -d <filename.dot>
-/**************************************************************/
+❯ ./assets/optlp --help
+OptLP: A tool to find the minimum number of shortest paths that cover all system actions
+Usage: ./assets/optlp [OPTIONS] [SUBCOMMAND]
+
+Options:
+  -h,--help                   Print this help message and exit
+
+Subcommands:
+  random                      Generate a random LTS
+  from-file                   Load an LTS from a dot file
 ```