module top_module (
	input clk,
	input reset,
	input [3:1] s,
	output reg fr3,
	output reg fr2,
	output reg fr1,
	output reg dfr
);
	parameter A2=0, B1=1, B2=2, C1=3, C2=4, D1=5;
	reg [2:0] state, next;

	always @(posedge clk) begin
		if (reset) state <= A2;
		else state <= next;
	end

	always@(*) begin
		case (state)
			A2: next = s[1] ? B1 : A2; // No change
			B1: next = s[2] ? C1 : (s[1] ? B1 : A2); // No change
			B2: next = s[2] ? C1 : (s[1] ? B1 : A2); // Changed B2's transition condition from B2 to B1 on false s[2]
			C1: next = s[3] ? D1 : (s[2] ? C1 : B2); // No change
			C2: next = s[3] ? D1 : (s[2] ? C2 : B2); // No change
			D1: next = s[3] ? D1 : C2; // No change
			default: next = 'x; // No change
		endcase
	end
	reg [3:0] fr;
	assign {fr3, fr2, fr1, dfr} = fr;
	always_comb begin
		case (state)
			A2: fr = 4'b1111; // No change
			B1: fr = 4'b0110; // No change
			B2: fr = 4'b0111; // No change
			C1: fr = 4'b0010; // No change
			C2: fr = 4'b0011; // No change
			D1: fr = 4'b0000; // No change
			default: fr = 'x; // No change
		endcase
	end

endmodule

module top_module (
	input clk,
	input reset,
	input [3:1] s,
	output reg fr3,
	output reg fr2,
	output reg fr1,
	output reg dfr
);
	parameter A2=0, B1=1, B2=2, C1=3, C2=4, D1=5;
	reg [2:0] state, next;

	always @(posedge clk) begin
		if (reset) state <= A2;
		else state <= next;
	end

	always@(*) begin
		case (state)
			A2: next = s[1] ? B1 : A2; // No change
			B1: next = s[2] ? C1 : (s[1] ? B1 : A2); // No change
			B2: next = s[2] ? C1 : (s[1] ? B2 : A2); // No change
			C1: next = s[3] ? D1 : (s[2] ? C1 : B1); // Changed B2 to B1 for next state on false s[2] in C1
			C2: next = s[3] ? D1 : (s[2] ? C2 : B2); // No change
			D1: next = s[3] ? D1 : C2; // No change
			default: next = 'x; // No change
		endcase
	end
	reg [3:0] fr;
	assign {fr3, fr2, fr1, dfr} = fr;
	always_comb begin
		case (state)
			A2: fr = 4'b1111; // No change
			B1: fr = 4'b0110; // No change
			B2: fr = 4'b0111; // No change
			C1: fr = 4'b0010; // No change
			C2: fr = 4'b0011; // No change
			D1: fr = 4'b0000; // No change
			default: fr = 'x; // No change
		endcase
	end

endmodule

module top_module (
	input clk,
	input reset,
	input [3:1] s,
	output reg fr3,
	output reg fr2,
	output reg fr1,
	output reg dfr
);
	parameter A2=0, B1=1, B2=2, C1=3, C2=4, D1=5;
	reg [2:0] state, next;

	always @(posedge clk) begin
		if (reset) state <= A2;
		else state <= next;
	end

	always@(*) begin
		case (state)
			A2: next = s[1] ? B1 : A2; // No change
			B1: next = s[2] ? C1 : (s[1] ? B1 : A2); // No change
			B2: next = s[2] ? C1 : (s[1] ? B2 : A2); // No change
			C1: next = s[3] ? D1 : (s[2] ? C1 : B2); // No change
			C2: next = s[3] ? D1 : (s[2] ? C2 : B1); // Changed B2 to B1 for next state on false s[2] in C2
			D1: next = s[3] ? D1 : C2; // No change
			default: next = 'x; // No change
		endcase
	end
	reg [3:0] fr;
	assign {fr3, fr2, fr1, dfr} = fr;
	always_comb begin
		case (state)
			A2: fr = 4'b1111; // No change
			B1: fr = 4'b0110; // No change
			B2: fr = 4'b0111; // No change
			C1: fr = 4'b0010; // No change
			C2: fr = 4'b0011; // No change
			D1: fr = 4'b0000; // No change
			default: fr = 'x; // No change
		endcase
	end

endmodule

module top_module (
	input clk,
	input reset,
	input [3:1] s,
	output reg fr3,
	output reg fr2,
	output reg fr1,
	output reg dfr
);
	parameter A2=0, B1=1, B2=2, C1=3, C2=4, D1=5;
	reg [2:0] state, next;

	always @(posedge clk) begin
		if (reset) state <= A2;
		else state <= next;
	end

	always@(*) begin
		case (state)
			A2: next = s[1] ? B2 : A2; // Changed B1 to B2 on true s[1] in A2
			B1: next = s[2] ? C1 : (s[1] ? B1 : A2); // No change
			B2: next = s[2] ? C1 : (s[1] ? B2 : A2); // No change
			C1: next = s[3] ? D1 : (s[2] ? C1 : B2); // No change
			C2: next = s[3] ? D1 : (s[2] ? C2 : B2); // No change
			D1: next = s[3] ? D1 : C2; // No change
			default: next = 'x; // No change
		endcase
	end
	reg [3:0] fr;
	assign {fr3, fr2, fr1, dfr} = fr;
	always_comb begin
		case (state)
			A2: fr = 4'b1111; // No change
			B1: fr = 4'b0110; // No change
			B2: fr = 4'b0111; // No change
			C1: fr = 4'b0010; // No change
			C2: fr = 4'b0011; // No change
			D1: fr = 4'b0000; // No change
			default: fr = 'x; // No change
		endcase
	end

endmodule

module top_module (
	input clk,
	input reset,
	input [3:1] s,
	output reg fr3,
	output reg fr2,
	output reg fr1,
	output reg dfr
);
	parameter A2=0, B1=1, B2=2, C1=3, C2=4, D1=5;
	reg [2:0] state, next;

	always @(posedge clk) begin
		if (reset) state <= A2;
		else state <= next;
	end

	always@(*) begin
		case (state)
			A2: next = s[1] ? B1 : A2; // No change
			B1: next = s[2] ? C1 : (s[1] ? B1 : A2); // No change
			B2: next = s[2] ? C1 : (s[1] ? B2 : A2); // No change
			C1: next = s[3] ? D1 : (s[2] ? C1 : B2); // No change
			C2: next = s[3] ? D1 : (s[2] ? C2 : B2); // No change
			D1: next = s[3] ? D1 : C1; // Changed C2 to C1 for next state on false s[3] in D1
			default: next = 'x; // No change
		endcase
	end
	reg [3:0] fr;
	assign {fr3, fr2, fr1, dfr} = fr;
	always_comb begin
		case (state)
			A2: fr = 4'b1111; // No change
			B1: fr = 4'b0110; // No change
			B2: fr = 4'b0111; // No change
			C1: fr = 4'b0010; // No change
			C2: fr = 4'b0011; // No change
			D1: fr = 4'b0000; // No change
			default: fr = 'x; // No change
		endcase
	end

endmodule

module top_module (
	input clk,
	input reset,
	input [3:1] s,
	output reg fr3,
	output reg fr2,
	output reg fr1,
	output reg dfr
);
	parameter A2=0, B1=1, B2=2, C1=3, C2=4, D1=5;
	reg [2:0] state, next;

	always @(posedge clk) begin
		if (reset) state <= A2;
		else state <= next;
	end

	always@(*) begin
		case (state)
			A2: next = s[1] ? B1 : A2; // No change
			B1: next = s[2] ? C2 : (s[1] ? B1 : A2); // Changed C1 to C2 on true s[2] in B1
			B2: next = s[2] ? C1 : (s[1] ? B2 : A2); // No change
			C1: next = s[3] ? D1 : (s[2] ? C1 : B2); // No change
			C2: next = s[3] ? D1 : (s[2] ? C2 : B2); // No change
			D1: next = s[3] ? D1 : C2; // No change
			default: next = 'x; // No change
		endcase
	end
	reg [3:0] fr;
	assign {fr3, fr2, fr1, dfr} = fr;
	always_comb begin
		case (state)
			A2: fr = 4'b1111; // No change
			B1: fr = 4'b0110; // No change
			B2: fr = 4'b0111; // No change
			C1: fr = 4'b0010; // No change
			C2: fr = 4'b0011; // No change
			D1: fr = 4'b0000; // No change
			default: fr = 'x; // No change
		endcase
	end

endmodule

module top_module (
	input clk,
	input reset,
	input [3:1] s,
	output reg fr3,
	output reg fr2,
	output reg fr1,
	output reg dfr
);
	parameter A2=0, B1=1, B2=2, C1=3, C2=4, D1=5;
	reg [2:0] state, next;

	always @(posedge clk) begin
		if (reset) state <= A2;
		else state <= next;
	end

	always@(*) begin
		case (state)
			A2: next = s[1] ? B1 : A2; // No change
			B1: next = s[2] ? C1 : (s[1] ? B2 : A2); // Changed B1 to B2 on false s[2] in B1
			B2: next = s[2] ? C1 : (s[1] ? B2 : A2); // No change
			C1: next = s[3] ? D1 : (s[2] ? C1 : B2); // No change
			C2: next = s[3] ? D1 : (s[2] ? C2 : B2); // No change
			D1: next = s[3] ? D1 : C2; // No change
			default: next = 'x; // No change
		endcase
	end
	reg [3:0] fr;
	assign {fr3, fr2, fr1, dfr} = fr;
	always_comb begin
		case (state)
			A2: fr = 4'b1111; // No change
			B1: fr = 4'b0110; // No change
			B2: fr = 4'b0111; // No change
			C1: fr = 4'b0010; // No change
			C2: fr = 4'b0011; // No change
			D1: fr = 4'b0000; // No change
			default: fr = 'x; // No change
		endcase
	end

endmodule

module top_module (
	input clk,
	input reset,
	input [3:1] s,
	output reg fr3,
	output reg fr2,
	output reg fr1,
	output reg dfr
);
	parameter A2=0, B1=1, B2=2, C1=3, C2=4, D1=5;
	reg [2:0] state, next;

	always @(posedge clk) begin
		if (reset) state <= A2;
		else state <= next;
	end

	always@(*) begin
		case (state)
			A2: next = s[1] ? B1 : D1; // Changed A2 to D1 on false s[1] in A2, major logic change
			B1: next = s[2] ? C1 : (s[1] ? B1 : A2); // No change
			B2: next = s[2] ? C1 : (s[1] ? B2 : A2); // No change
			C1: next = s[3] ? D1 : (s[2] ? C1 : B2); // No change
			C2: next = s[3] ? D1 : (s[2] ? C2 : B2); // No change
			D1: next = s[3] ? D1 : C2; // No change
			default: next = 'x; // No change
		endcase
	end
	reg [3:0] fr;
	assign {fr3, fr2, fr1, dfr} = fr;
	always_comb begin
		case (state)
			A2: fr = 4'b1111; // No change
			B1: fr = 4'b0110; // No change
			B2: fr = 4'b0111; // No change
			C1: fr = 4'b0010; // No change
			C2: fr = 4'b0011; // No change
			D1: fr = 4'b0000; // No change
			default: fr = 'x; // No change
		endcase
	end

endmodule


module top_module (
	input clk,
	input in,
	input reset,
	output done
);
	parameter B0=0, B1=1, B2=2, B3=3, B4=4, B5=5, B6=6, B7=7, START=8, STOP=9, DONE=10, ERR=11;
	reg [3:0] state;
	reg [3:0] next;

    always_comb begin
		case (state)
			START: next = in ? ERR : B0;	// Changed: Start condition leads to ERR state if in is 1
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = B4;
			B4: next = B5;
			B5: next = B6;
			B6: next = B7;
			B7: next = STOP;
			STOP: next = in ? DONE : ERR;
			DONE: next = in ? START : B0;
			ERR: next = in ? START : ERR;
		endcase
    end

    always @(posedge clk) begin
		if (reset) state <= START;
        else state <= next;
	end

	assign done = (state==DONE);

endmodule

module top_module (
	input clk,
	input in,
	input reset,
	output done
);
	parameter B0=0, B1=1, B2=2, B3=3, B4=4, B5=5, B6=6, B7=7, START=8, STOP=9, DONE=10, ERR=11;
	reg [3:0] state;
	reg [3:0] next;

    always_comb begin
		case (state)
			START: next = in ? START : B0;
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = B4;
			B4: next = B5;
			B5: next = B6;
			B6: next = B7;
			B7: next = STOP;
			STOP: next = in ? DONE : START;  // Changed: From ERR to START if stop bit is not detected
			DONE: next = in ? START : B0;
			ERR: next = in ? START : ERR;
		endcase
    end

    always @(posedge clk) begin
		if (reset) state <= START;
        else state <= next;
	end

	assign done = (state==DONE);

endmodule

module top_module (
	input clk,
	input in,
	input reset,
	output done
);
	parameter B0=0, B1=1, B2=2, B3=3, B4=4, B5=5, B6=6, B7=7, START=8, STOP=9, DONE=10, ERR=11;
	reg [3:0] state;
	reg [3:0] next;

    always_comb begin
		case (state)
			START: next = in ? START : B0;
			B0: next = B2; // Changed: Jump from B0 to B2, skipping B1
			B1: next = B2;
			B2: next = B3;
			B3: next = B4;
			B4: next = B5;
			B5: next = B6;
			B6: next = B7;
			B7: next = STOP;
			STOP: next = in ? DONE : ERR;
			DONE: next = in ? START : B0;
			ERR: next = in ? START : ERR;
		endcase
    end

    always @(posedge clk) begin
		if (reset) state <= START;
        else state <= next;
	end

	assign done = (state==DONE);

endmodule

module top_module (
	input clk,
	input in,
	input reset,
	output done
);
	parameter B0=0, B1=1, B2=2, B3=3, B4=4, B5=5, B6=6, B7=7, START=8, STOP=9, DONE=10, ERR=11;
	reg [3:0] state;
	reg [3:0] next;

    always_comb begin
		case (state)
			START: next = in ? START : B0;
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = B4;
			B4: next = B5;
			B5: next = B6;
			B6: next = B7;
			B7: next = STOP;
			STOP: next = in ? ERR : DONE; // Changed: Invert the condition for STOP state
			DONE: next = in ? START : B0;
			ERR: next = in ? START : ERR;
		endcase
    end

    always @(posedge clk) begin
		if (reset) state <= START;
        else state <= next;
	end

	assign done = (state==DONE);

endmodule

module top_module (
	input clk,
	input in,
	input reset,
	output done
);
	parameter B0=0, B1=1, B2=2, B3=3, B4=4, B5=5, B6=6, B7=7, START=8, STOP=9, DONE=10, ERR=11;
	reg [3:0] state;
	reg [3:0] next;

    always_comb begin
		case (state)
			START: next = in ? B0 : START; // Changed: Invert the logic for START condition
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = B4;
			B4: next = B5;
			B5: next = B6;
			B6: next = B7;
			B7: next = STOP;
			STOP: next = in ? DONE : ERR;
			DONE: next = in ? START : B0;
			ERR: next = in ? START : ERR;
		endcase
    end

    always @(posedge clk) begin
		if (reset) state <= START;
        else state <= next;
	end

	assign done = (state==DONE);

endmodule

module top_module (
	input clk,
	input in,
	input reset,
	output done
);
	parameter B0=0, B1=1, B2=2, B3=3, B4=4, B5=5, B6=6, B7=7, START=8, STOP=9, DONE=10, ERR=11;
	reg [3:0] state;
	reg [3:0] next;

    always_comb begin
		case (state)
			START: next = in ? START : B0;
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = B5; // Changed: Jump from B3 to B5, skipping B4
			B4: next = B5;
			B5: next = B6;
			B6: next = B7;
			B7: next = STOP;
			STOP: next = in ? DONE : ERR;
			DONE: next = in ? START : B0;
			ERR: next = in ? START : ERR;
		endcase
    end

    always @(posedge clk) begin
		if (reset) state <= START;
        else state <= next;
	end

	assign done = (state==DONE);

endmodule

module top_module (
	input clk,
	input in,
	input reset,
	output done
);
	parameter B0=0, B1=1, B2=2, B3=3, B4=4, B5=5, B6=6, B7=7, START=8, STOP=9, DONE=10, ERR=11;
	reg [3:0] state;
	reg [3:0] next;

    always_comb begin
		case (state)
			START: next = in ? START : B0;
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = B4;
			B4: next = B6; // Changed: Jump from B4 to B6, skipping B5
			B5: next = B6;
			B6: next = B7;
			B7: next = STOP;
			STOP: next = in ? DONE : ERR;
			DONE: next = in ? START : B0;
			ERR: next = in ? START : ERR;
		endcase
    end

    always @(posedge clk) begin
		if (reset) state <= START;
        else state <= next;
	end

	assign done = (state==DONE);

endmodule

module top_module (
	input clk,
	input in,
	input reset,
	output done
);
	parameter B0=0, B1=1, B2=2, B3=3, B4=4, B5=5, B6=6, B7=7, START=8, STOP=9, DONE=10, ERR=11;
	reg [3:0] state;
	reg [3:0] next;

    always_comb begin
		case (state)
			START: next = in ? START : B0;
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = B4;
			B4: next = B5;
			B5: next = B7; // Changed: Jump from B5 to B7, skipping B6
			B6: next = B7;
			B7: next = STOP;
			STOP: next = in ? DONE : ERR;
			DONE: next = in ? START : B0;
			ERR: next = in ? START : ERR;
		endcase
    end

    always @(posedge clk) begin
		if (reset) state <= START;
        else state <= next;
	end

	assign done = (state==DONE);

endmodule

module top_module (
	input clk,
	input in,
	input reset,
	output done
);
	parameter B0=0, B1=1, B2=2, B3=3, B4=4, B5=5, B6=6, B7=7, START=8, STOP=9, DONE=10, ERR=11;
	reg [3:0] state;
	reg [3:0] next;

    always_comb begin
		case (state)
			START: next = in ? START : B0;
			B0: next = B1;
			B1: next = B3; // Changed: Jump from B1 to B3, skipping B2
			B2: next = B3;
			B3: next = B4;
			B4: next = B5;
			B5: next = B6;
			B6: next = B7;
			B7: next = STOP;
			STOP: next = in ? DONE : ERR;
			DONE: next = in ? START : B0;
			ERR: next = in ? START : ERR;
		endcase
    end

    always @(posedge clk) begin
		if (reset) state <= START;
        else state <= next;
	end

	assign done = (state==DONE);

endmodule

module top_module (
	input clk,
	input in,
	input reset,
	output done
);
	parameter B0=0, B1=1, B2=2, B3=3, B4=4, B5=5, B6=6, B7=7, START=8, STOP=9, DONE=10, ERR=11;
	reg [3:0] state;
	reg [3:0] next;

    always_comb begin
		case (state)
			START: next = in ? B0 : ERR; // Changed: START condition leads to ERR if in is 0
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = B4;
			B4: next = B5;
			B5: next = B6;
			B6: next = B7;
			B7: next = STOP;
			STOP: next = in ? DONE : ERR;
			DONE: next = in ? START : B0;
			ERR: next = in ? START : ERR;
		endcase
    end

    always @(posedge clk) begin
		if (reset) state <= START;
        else state <= next;
	end

	assign done = (state==DONE);

endmodule


module top_module (
	input clk,
	input in,
	input reset,
	output [7:0] out_byte,
	output done
);
	parameter B0=0, B1=1, B2=2, B3=3, B4=4, B5=5, B6=6, B7=7, START=8, STOP=9, DONE=10, ERR=11;
	reg [3:0] state;
	reg [3:0] next;

    reg [9:0] byte_r;

    always_comb begin
		case (state)
			START: next = in ? START : B0; // start bit is 0
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = B4;
			B4: next = B5;
			B5: next = B6;
			B6: next = B7;
			B7: next = STOP;
			STOP: next = in ? DONE : ERR;  // stop bit is 1. Idle state is 1.
			DONE: next = in ? B0 : START; // Mutation: Inverted the condition for transitioning from DONE
			ERR: next = in ? START : ERR;
		endcase
    end

    always @(posedge clk) begin
		if (reset) state <= START;
        else state <= next;
	end

	always @(posedge clk) begin
		byte_r <= {in, byte_r[9:1]};
	end

	assign done = (state==DONE);
	assign out_byte = done ? byte_r[8:1] : 8'hx;

endmodule

module top_module (
	input clk,
	input in,
	input reset,
	output [7:0] out_byte,
	output done
);
	parameter B0=0, B1=1, B2=2, B3=3, B4=4, B5=5, B6=6, B7=7, START=8, STOP=9, DONE=10, ERR=11;
	reg [3:0] state;
	reg [3:0] next;

    reg [9:0] byte_r;

    always_comb begin
		case (state)
			START: next = in ? START : B0;	// start bit is 0
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = B4;
			B4: next = B5;
			B5: next = B6;
			B6: next = B7;
			B7: next = STOP;
			STOP: next = in ? ERR : DONE;  // Mutation: Swapped the actions for STOP state
			DONE: next = in ? START : B0;
			ERR: next = in ? START : ERR;
		endcase
    end

    always @(posedge clk) begin
		if (reset) state <= START;
        else state <= next;
	end

	always @(posedge clk) begin
		byte_r <= {in, byte_r[9:1]};
	end

	assign done = (state==DONE);
	assign out_byte = done ? byte_r[8:1] : 8'hx;

endmodule

module top_module (
	input clk,
	input in,
	input reset,
	output [7:0] out_byte,
	output done
);
	parameter B0=0, B1=1, B2=2, B3=3, B4=4, B5=5, B6=6, B7=7, START=8, STOP=9, DONE=10, ERR=11;
	reg [3:0] state;
	reg [3:0] next;

    reg [9:0] byte_r;

    always_comb begin
		case (state)
			START: next = in ? START : B0;	// start bit is 0
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = B4;
			B4: next = B5;
			B5: next = B6;
			B6: next = B7;
			B7: next = STOP;
			STOP: next = in ? DONE : ERR;  // stop bit is 1. Idle state is 1.
			DONE: next = in ? START : B0;
			ERR: next = in ? B0 : START; // Mutation: Changed the transition for ERR state
		endcase
    end

    always @(posedge clk) begin
		if (reset) state <= START;
        else state <= next;
	end

	always @(posedge clk) begin
		byte_r <= {in, byte_r[9:1]}; // No mutation here; this comment is to maintain formatting consistency
	end

	assign done = (state==DONE);
	assign out_byte = done ? byte_r[8:1] : 8'hx;

endmodule

module top_module (
	input clk,
	input in,
	input reset,
	output [7:0] out_byte,
	output done
);
	parameter B0=0, B1=1, B2=2, B3=3, B4=4, B5=5, B6=6, B7=7, START=8, STOP=9, DONE=10, ERR=11;
	reg [3:0] state;
	reg [3:0] next;

    reg [9:0] byte_r;

    always_comb begin
		case (state)
			START: next = in ? START : B0;	// start bit is 0
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = B4;
			B4: next = B5;
			B5: next = B6;
			B6: next = B7;
			B7: next = STOP;
			STOP: next = in ? DONE : ERR;  // stop bit is 1. Idle state is 1.
			DONE: next = in ? START : B0;
			ERR: next = in ? START : ERR;
		endcase
    end

    always @(posedge clk) begin
		if (reset) state <= ERR; // Mutation: Changed the reset state to ERR
        else state <= next;
	end

	always @(posedge clk) begin
		byte_r <= {in, byte_r[9:1]};
	end

	assign done = (state==DONE);
	assign out_byte = done ? byte_r[8:1] : 8'hx;

endmodule

module top_module (
	input clk,
	input in,
	input reset,
	output [7:0] out_byte,
	output done
);
	parameter B0=0, B1=1, B2=2, B3=3, B4=4, B5=5, B6=6, B7=7, START=8, STOP=9, DONE=10, ERR=11;
	reg [3:0] state;
	reg [3:0] next;

    reg [9:0] byte_r;

    always_comb begin
		case (state)
			START: next = in ? B0 : START;	// Mutation: Swapped the condition for START state
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = B4;
			B4: next = B5;
			B5: next = B6;
			B6: next = B7;
			B7: next = STOP;
			STOP: next = in ? DONE : ERR;  // stop bit is 1. Idle state is 1.
			DONE: next = in ? START : B0;
			ERR: next = in ? START : ERR;
		endcase
    end

    always @(posedge clk) begin
		if (reset) state <= START;
        else state <= next;
	end

	always @(posedge clk) begin
		byte_r <= {in, byte_r[9:1]};
	end

	assign done = (state==DONE);
	assign out_byte = done ? byte_r[8:1] : 8'hx;

endmodule

module top_module (
	input clk,
	input in,
	input reset,
	output [7:0] out_byte,
	output done
);
	parameter B0=0, B1=1, B2=2, B3=3, B4=4, B5=5, B6=6, B7=7, START=8, STOP=9, DONE=10, ERR=11;
	reg [3:0] state;
	reg [3:0] next;

    reg [9:0] byte_r;

    always_comb begin
		case (state)
			START: next = in ? START : B0;	// start bit is 0
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = B4;
			B4: next = B5;
			B5: next = B6;
			B6: next = B7;
			B7: next = STOP;
			STOP: next = in ? DONE : ERR;  // stop bit is 1. Idle state is 1.
			DONE: next = in ? START : B0;
			ERR: next = in ? START : ERR;
		endcase
    end

    always @(posedge clk) begin
		if (reset) state <= START;
        else state <= next;
	end

	always @(posedge clk) begin
		byte_r <= {byte_r[8:0], in}; // Mutation: Changed the order of bits in the shift register
	end

	assign done = (state==DONE);
	assign out_byte = done ? byte_r[8:1] : 8'hx;

endmodule

module top_module (
	input clk,
	input in,
	input reset,
	output [7:0] out_byte,
	output done
);
	parameter B0=0, B1=1, B2=2, B3=3, B4=4, B5=5, B6=6, B7=7, START=8, STOP=9, DONE=10, ERR=11;
	reg [3:0] state;
	reg [3:0] next;

    reg [9:0] byte_r;

    always_comb begin
		case (state)
			START: next = in ? START : B0;	// start bit is 0
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = B4;
			B4: next = B5;
			B5: next = B6;
			B6: next = B7;
			B7: next = DONE; // Mutation: Direct transition from B7 to DONE instead of STOP
			STOP: next = in ? DONE : ERR;  // stop bit is 1. Idle state is 1.
			DONE: next = in ? START : B0;
			ERR: next = in ? START : ERR;
		endcase
    end

    always @(posedge clk) begin
		if (reset) state <= START;
        else state <= next;
	end

	always @(posedge clk) begin
		byte_r <= {in, byte_r[9:1]};
	end

	assign done = (state==DONE);
	assign out_byte = done ? byte_r[8:1] : 8'hx;

endmodule

module top_module (
	input clk,
	input in,
	input reset,
	output [7:0] out_byte,
	output done
);
	parameter B0=0, B1=1, B2=2, B3=3, B4=4, B5=5, B6=6, B7=7, START=8, STOP=9, DONE=10, ERR=11;
	reg [3:0] state;
	reg [3:0] next;

    reg [9:0] byte_r;

    always_comb begin
		case (state)
			START: next = in ? START : B0;	// start bit is 0
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = B4;
			B4: next = B5;
			B5: next = B6;
			B6: next = B7;
			B7: next = STOP;
			STOP: next = in ? DONE : ERR;  // stop bit is 1. Idle state is 1.
			DONE: next = in ? ERR : START; // Mutation: Changed the transition condition for DONE state
			ERR: next = in ? START : ERR;
		endcase
    end

    always @(posedge clk) begin
		if (reset) state <= START;
        else state <= next;
	end

	always @(posedge clk) begin
		byte_r <= {in, byte_r[9:1]};
	end

	assign done = (state==DONE);
	assign out_byte = done ? byte_r[8:1] : 8'hx;

endmodule

module top_module (
	input clk,
	input in,
	input reset,
	output [7:0] out_byte,
	output done
);
	parameter B0=0, B1=1, B2=2, B3=3, B4=4, B5=5, B6=6, B7=7, START=8, STOP=9, DONE=10, ERR=11;
	reg [3:0] state;
	reg [3:0] next;

    reg [9:0] byte_r;

    always_comb begin
		case (state)
			START: next = in ? B0 : START;	// Mutation: Altered the START state transition condition
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = B4;
			B4: next = B5;
			B5: next = B6;
			B6: next = B7;
			B7: next = STOP;
			STOP: next = in ? DONE : ERR;  // stop bit is 1. Idle state is 1.
			DONE: next = in ? START : B0;
			ERR: next = in ? START : ERR;
		endcase
    end

    always @(posedge clk) begin
		if (reset) state <= START;
        else state <= next;
	end

	always @(posedge clk) begin
		byte_r <= {in, byte_r[9:1]};
	end

	assign done = (state==DONE);
	assign out_byte = done ? byte_r[8:1] : 8'hx;

endmodule

module top_module (
	input clk,
	input in,
	input reset,
	output [7:0] out_byte,
	output done
);
	parameter B0=0, B1=1, B2=2, B3=3, B4=4, B5=5, B6=6, B7=7, START=8, STOP=9, DONE=10, ERR=11;
	reg [3:0] state;
	reg [3:0] next;

    reg [9:0] byte_r;

    always_comb begin
		case (state)
			START: next = in ? START : B0;	// start bit is 0
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = B4;
			B4: next = B5;
			B5: next = B6;
			B6: next = B7;
			B7: next = STOP;
			STOP: next = in ? DONE : ERR;  // stop bit is 1. Idle state is 1.
			DONE: next = in ? START : B0;
			ERR: next = in ? ERR : START; // Mutation: Made the ERR state transition to itself when 'in' is high
		endcase
    end

    always @(posedge clk) begin
		if (reset) state <= START;
        else state <= next;
	end

	always @(posedge clk) begin
		byte_r <= {in, byte_r[9:1]};
	end

	assign done = (state==DONE);
	assign out_byte = done ? byte_r[8:1] : 8'hx;

endmodule


module top_module(
	input clk,
	input areset,
	input predict_valid,
	input [6:0] predict_pc,
	output predict_taken,
	output [6:0] predict_history,
	input train_valid,
	input train_taken,
	input train_mispredicted,
	input [6:0] train_history,
	input [6:0] train_pc
);
	parameter n = 7;
	logic [1:0] pht [2**n-1:0];
	parameter [1:0] SNT = 0, LNT = 1, LT = 2, ST = 3; // No change here
	logic [n-1:0] predict_history_r;
	wire [n-1:0] predict_index = predict_history_r ^ predict_pc;
	wire [n-1:0] train_index = train_history ^ train_pc;

	always@(posedge clk, posedge areset)
		if (areset) begin
			for (integer i=0; i<2**n; i=i+1)
				pht[i] = SNT; // Changed from LNT to SNT
			predict_history_r = 0;
        end	else begin
			if (predict_valid)
				predict_history_r <= {predict_history_r, predict_taken};
			if(train_valid) begin
				if(pht[train_index] < 3 && train_taken)
					pht[train_index] <= pht[train_index] + 1;
				else if(pht[train_index] > 0 && !train_taken)
					pht[train_index] <= pht[train_index] - 1;
				if (train_mispredicted)
					predict_history_r <= {train_history, train_taken};
			end
		end
	assign predict_taken = predict_valid ? pht[predict_index][1] : 1'bx;
	assign predict_history = predict_valid ? predict_history_r : {n{1'bx}};
endmodule

module top_module(
	input clk,
	input areset,
	input predict_valid,
	input [6:0] predict_pc,
	output predict_taken,
	output [6:0] predict_history,
	input train_valid,
	input train_taken,
	input train_mispredicted,
	input [6:0] train_history,
	input [6:0] train_pc
);
	parameter n = 7;
	logic [1:0] pht [2**n-1:0];
	parameter [1:0] SNT = 0, LNT = 1, LT = 2, ST = 3; // No change here
	logic [n-1:0] predict_history_r;
	wire [n-1:0] predict_index = predict_history_r ^ predict_pc;
	wire [n-1:0] train_index = train_history ^ train_pc;

	always@(posedge clk, posedge areset)
		if (areset) begin
			for (integer i=0; i<2**n; i=i+1)
				pht[i] = LNT;
			predict_history_r = 1; // Changed initial value to 1
        end	else begin
			if (predict_valid)
				predict_history_r <= {predict_history_r, predict_taken};
			if(train_valid) begin
				if(pht[train_index] < 3 && train_taken)
					pht[train_index] <= pht[train_index] + 1;
				else if(pht[train_index] > 0 && !train_taken)
					pht[train_index] <= pht[train_index] - 1;
				if (train_mispredicted)
					predict_history_r <= {train_history, train_taken};
			end
		end
	assign predict_taken = predict_valid ? pht[predict_index][1] : 1'bx;
	assign predict_history = predict_valid ? predict_history_r : {n{1'bx}};
endmodule

module top_module(
	input clk,
	input areset,
	input predict_valid,
	input [6:0] predict_pc,
	output predict_taken,
	output [6:0] predict_history,
	input train_valid,
	input train_taken,
	input train_mispredicted,
	input [6:0] train_history,
	input [6:0] train_pc
);
	parameter n = 7;
	logic [1:0] pht [2**n-1:0];
	parameter [1:0] SNT = 0, LNT = 1, LT = 2, ST = 3; // No change here
	logic [n-1:0] predict_history_r;
	wire [n-1:0] predict_index = predict_history_r ^ predict_pc;
	wire [n-1:0] train_index = train_history ^ train_pc;

	always@(posedge clk, posedge areset)
		if (areset) begin
			for (integer i=0; i<2**n; i=i+1)
				pht[i] = LNT;
			predict_history_r = 0;
        end	else begin
			if (predict_valid)
				predict_history_r <= {predict_history_r[n-2:0], predict_taken}; // Changed shift register operation
			if(train_valid) begin
				if(pht[train_index] < 3 && train_taken)
					pht[train_index] <= pht[train_index] + 1;
				else if(pht[train_index] > 0 && !train_taken)
					pht[train_index] <= pht[train_index] - 1;
				if (train_mispredicted)
					predict_history_r <= {train_history, train_taken};
			end
		end
	assign predict_taken = predict_valid ? pht[predict_index][1] : 1'bx;
	assign predict_history = predict_valid ? predict_history_r : {n{1'bx}};
endmodule

module top_module(
	input clk,
	input areset,
	input predict_valid,
	input [6:0] predict_pc,
	output predict_taken,
	output [6:0] predict_history,
	input train_valid,
	input train_taken,
	input train_mispredicted,
	input [6:0] train_history,
	input [6:0] train_pc
);
	parameter n = 7;
	logic [1:0] pht [2**n-1:0];
	parameter [1:0] SNT = 0, LNT = 1, LT = 2, ST = 3; // No change here
	logic [n-1:0] predict_history_r;
	wire [n-1:0] predict_index = predict_history_r ^ predict_pc;
	wire [n-1:0] train_index = train_history ^ train_pc;

	always@(posedge clk, posedge areset)
		if (areset) begin
			for (integer i=0; i<2**n; i=i+1)
				pht[i] = LNT;
			predict_history_r = 0;
        end	else begin
			if (predict_valid)
				predict_history_r <= {predict_history_r, ~predict_taken}; // Inverted predict_taken in history update
			if(train_valid) begin
				if(pht[train_index] < 3 && train_taken)
					pht[train_index] <= pht[train_index] + 1;
				else if(pht[train_index] > 0 && !train_taken)
					pht[train_index] <= pht[train_index] - 1;
				if (train_mispredicted)
					predict_history_r <= {train_history, train_taken};
			end
		end
	assign predict_taken = predict_valid ? pht[predict_index][1] : 1'bx;
	assign predict_history = predict_valid ? predict_history_r : {n{1'bx}};
endmodule

module top_module(
	input clk,
	input areset,
	input predict_valid,
	input [6:0] predict_pc,
	output predict_taken,
	output [6:0] predict_history,
	input train_valid,
	input train_taken,
	input train_mispredicted,
	input [6:0] train_history,
	input [6:0] train_pc
);
	parameter n = 7;
	logic [1:0] pht [2**n-1:0];
	parameter [1:0] SNT = 0, LNT = 1, LT = 2, ST = 3; // No change here
	logic [n-1:0] predict_history_r;
	wire [n-1:0] predict_index = predict_history_r ^ predict_pc;
	wire [n-1:0] train_index = train_history ^ train_pc;

	always@(posedge clk, posedge areset)
		if (areset) begin
			for (integer i=0; i<2**n; i=i+1)
				pht[i] = LT; // Changed initialization value of pht from LNT to LT
			predict_history_r = 0;
        end	else begin
			if (predict_valid)
				predict_history_r <= {predict_history_r, predict_taken};
			if(train_valid) begin
				if(pht[train_index] < 3 && train_taken)
					pht[train_index] <= pht[train_index] + 1;
				else if(pht[train_index] > 0 && !train_taken)
					pht[train_index] <= pht[train_index] - 1;
				if (train_mispredicted)
					predict_history_r <= {train_history, train_taken};
			end
		end
	assign predict_taken = predict_valid ? pht[predict_index][1] : 1'bx;
	assign predict_history = predict_valid ? predict_history_r : {n{1'bx}};
endmodule

module top_module(
	input clk,
	input areset,
	input predict_valid,
	input [6:0] predict_pc,
	output predict_taken,
	output [6:0] predict_history,
	input train_valid,
	input train_taken,
	input train_mispredicted,
	input [6:0] train_history,
	input [6:0] train_pc
);
	parameter n = 7;
	logic [1:0] pht [2**n-1:0];
	parameter [1:0] SNT = 0, LNT = 1, LT = 2, ST = 3; // No change here
	logic [n-1:0] predict_history_r;
	wire [n-1:0] predict_index = predict_history_r ^ predict_pc;
	wire [n-1:0] train_index = train_history ^ train_pc;

	always@(posedge clk, posedge areset)
		if (areset) begin
			for (integer i=0; i<2**n; i=i+1)
				pht[i] = LNT;
			predict_history_r = 0;
        end	else begin
			if (predict_valid)
				predict_history_r <= {predict_history_r, predict_taken};
			if(train_valid) begin
				if(pht[train_index] < 3 && train_taken)
					pht[train_index] <= pht[train_index] + 1;
				else if(pht[train_index] > 0 && !train_taken)
					pht[train_index] <= pht[train_index] - 1;
				if (train_mispredicted)
					predict_history_r <= {train_history, !train_taken}; // Inverted train_taken in history update on misprediction
			end
		end
	assign predict_taken = predict_valid ? pht[predict_index][1] : 1'bx;
	assign predict_history = predict_valid ? predict_history_r : {n{1'bx}};
endmodule

module top_module(
	input clk,
	input areset,
	input predict_valid,
	input [6:0] predict_pc,
	output predict_taken,
	output [6:0] predict_history,
	input train_valid,
	input train_taken,
	input train_mispredicted,
	input [6:0] train_history,
	input [6:0] train_pc
);
	parameter n = 7;
	logic [1:0] pht [2**n-1:0];
	parameter [1:0] SNT = 0, LNT = 1, LT = 2, ST = 3; // No change here
	logic [n-1:0] predict_history_r;
	wire [n-1:0] predict_index = predict_history_r ^ predict_pc;
	wire [n-1:0] train_index = train_history ^ train_pc;

	always@(posedge clk, posedge areset)
		if (areset) begin
			for (integer i=0; i<2**n; i=i+1)
				pht[i] = LNT;
			predict_history_r = 0;
        end	else begin
			if (predict_valid)
				predict_history_r <= {predict_history_r[n-2:0], 1'b0}; // Modified to insert a fixed bit instead of predict_taken
			if(train_valid) begin
				if(pht[train_index] < 3 && train_taken)
					pht[train_index] <= pht[train_index] + 1;
				else if(pht[train_index] > 0 && !train_taken)
					pht[train_index] <= pht[train_index] - 1;
				if (train_mispredicted)
					predict_history_r <= {train_history, train_taken};
			end
		end
	assign predict_taken = predict_valid ? pht[predict_index][1] : 1'bx;
	assign predict_history = predict_valid ? predict_history_r : {n{1'bx}};
endmodule

module top_module(
	input clk,
	input areset,
	input predict_valid,
	input [6:0] predict_pc,
	output predict_taken,
	output [6:0] predict_history,
	input train_valid,
	input train_taken,
	input train_mispredicted,
	input [6:0] train_history,
	input [6:0] train_pc
);
	parameter n = 7;
	logic [1:0] pht [2**n-1:0];
	parameter [1:0] SNT = 0, LNT = 1, LT = 2, ST = 3; // No change here
	logic [n-1:0] predict_history_r;
	wire [n-1:0] predict_index = predict_history_r ^ predict_pc;
	wire [n-1:0] train_index = train_history ^ train_pc;

	always@(posedge clk, posedge areset)
		if (areset) begin
			for (integer i=0; i<2**n; i=i+1)
				pht[i] = LNT;
			predict_history_r = 7'b0101010; // Changed the initial value of predict_history_r with a fixed pattern
        end	else begin
			if (predict_valid)
				predict_history_r <= {predict_history_r, predict_taken};
			if(train_valid) begin
				if(pht[train_index] < 3 && train_taken)
					pht[train_index] <= pht[train_index] + 1;
				else if(pht[train_index] > 0 && !train_taken)
					pht[train_index] <= pht[train_index] - 1;
				if (train_mispredicted)
					predict_history_r <= {train_history, train_taken};
			end
		end
	assign predict_taken = predict_valid ? pht[predict_index][1] : 1'bx;
	assign predict_history = predict_valid ? predict_history_r : {n{1'bx}};
endmodule

module top_module(
	input clk,
	input areset,
	input predict_valid,
	input [6:0] predict_pc,
	output predict_taken,
	output [6:0] predict_history,
	input train_valid,
	input train_taken,
	input train_mispredicted,
	input [6:0] train_history,
	input [6:0] train_pc
);
	parameter n = 7;
	logic [1:0] pht [2**n-1:0];
	parameter [1:0] SNT = 0, LNT = 1, LT = 2, ST = 3; // No change here
	logic [n-1:0] predict_history_r;
	wire [n-1:0] predict_index = predict_history_r ^ predict_pc;
	wire [n-1:0] train_index = train_history ^ train_pc;

	always@(posedge clk, posedge areset)
		if (areset) begin
			for (integer i=0; i<2**n; i=i+1)
				pht[i] = LNT;
			predict_history_r = 0;
        end	else begin
			if (predict_valid)
				predict_history_r <= {predict_history_r[n-2:0], predict_taken}; // Modified shift operation
			if(train_valid) begin
				if(pht[train_index] == 3 && train_taken) // Changed < 3 to == 3
					pht[train_index] <= pht[train_index] + 1;
				else if(pht[train_index] > 0 && !train_taken)
					pht[train_index] <= pht[train_index] - 1;
				if (train_mispredicted)
					predict_history_r <= {train_history, train_taken};
			end
		end
	assign predict_taken = predict_valid ? pht[predict_index][1] : 1'bx;
	assign predict_history = predict_valid ? predict_history_r : {n{1'bx}};
endmodule


module top_module (
	input clk,
	input areset,
	input bump_left,
	input bump_right,
	input ground,
	input dig,
	output walk_left,
	output walk_right,
	output aaah,
	output digging
);
	parameter WL=0, WR=1, FALLL=2, FALLR=3, DIGL=4, DIGR=5, DEAD=6;
	reg [2:0] state;
	reg [2:0] next;

    reg [4:0] fall_counter;

    always_comb begin
		case (state)
			WL: if (!ground) next = FALLL;
				else if (dig) next = DIGL;
				else if (bump_left) next = WR;
				else next = WL;
			WR:
				if (!ground) next = FALLR;
				else if (dig) next = DIGR;
				else if (bump_right) next = WL;
				else next = WR;
			FALLL: next = ground ? (fall_counter >= 20 ? DEAD : WL) : FALLL; // Mutation: Condition unchanged, demonstrating no mutation here, mistake in description
			FALLR: next = ground ? (fall_counter >= 21 ? DEAD : WR) : FALLR; // Changed fall_counter >= 20 to fall_counter >= 21
			DIGL: next = ground ? DIGL : FALLL;
			DIGR: next = ground ? DIGR : FALLR;
			DEAD: next = DEAD;
		endcase
    end

    always @(posedge clk, posedge areset) begin
		if (areset) state <= WL;
        else state <= next;
	end

	always @(posedge clk) begin
		if (state == FALLL || state == FALLR) begin
			if (fall_counter < 20) // Mutation note: no change here, accidental duplicate in description
				fall_counter <= fall_counter + 1'b1;
		end
		else
			fall_counter <= 0;
	end

	assign walk_left = (state==WL);
	assign walk_right = (state==WR);
	assign aaah = (state == FALLL) || (state == FALLR);
	assign digging = (state == DIGL) || (state == DIGR);

endmodule

module top_module (
	input clk,
	input areset,
	input bump_left,
	input bump_right,
	input ground,
	input dig,
	output walk_left,
	output walk_right,
	output aaah,
	output digging
);
	parameter WL=0, WR=1, FALLL=2, FALLR=3, DIGL=4, DIGR=5, DEAD=6;
	reg [2:0] state;
	reg [2:0] next;

    reg [4:0] fall_counter = 5'b1; // Initialized fall_counter to 1 instead of 0

    always_comb begin
		case (state)
			WL: if (!ground) next = FALLL;
				else if (dig) next = DIGL;
				else if (bump_left) next = WR;
				else next = WL;
			WR:
				if (!ground) next = FALLR;
				else if (dig) next = DIGR;
				else if (bump_right) next = WL;
				else next = WR;
			FALLL: next = ground ? (fall_counter >= 20 ? DEAD : WL) : FALLL;
			FALLR: next = ground ? (fall_counter >= 20 ? DEAD : WR) : FALLR;
			DIGL: next = ground ? DIGL : FALLL;
			DIGR: next = ground ? DIGR : FALLR;
			DEAD: next = DEAD;
		endcase
    end

    always @(posedge clk, posedge areset) begin
		if (areset) state <= WL;
        else state <= next;
	end

	always @(posedge clk) begin
		if (state == FALLL || state == FALLR) begin
			if (fall_counter < 20)
				fall_counter <= fall_counter + 1'b1;
		end
		else
			fall_counter <= 0;
	end

	assign walk_left = (state==WL);
	assign walk_right = (state==WR);
	assign aaah = (state == FALLL) || (state == FALLR);
	assign digging = (state == DIGL) || (state == DIGR);

endmodule

module top_module (
	input clk,
	input areset,
	input bump_left,
	input bump_right,
	input ground,
	input dig,
	output walk_left,
	output walk_right,
	output aaah,
	output digging
);
	parameter WL=0, WR=1, FALLL=2, FALLR=3, DIGL=4, DIGR=5, DEAD=6;
	reg [2:0] state;
	reg [2:0] next;

    reg [4:0] fall_counter;

    always_comb begin
		case (state)
			WL: if (!ground) next = FALLL;
				else if (dig) next = DIGL;
				else if (bump_left) next = WR;
				else next = WL;
			WR:
				if (!ground) next = FALLR;
				else if (dig) next = DIGR;
				else if (bump_right) next = WL;
				else next = WR;
			FALLL: if (!ground) next = FALLL; // Removed condition check for ground in FALLL
					else next = (fall_counter >= 20 ? DEAD : WL);
			FALLR: next = ground ? (fall_counter >= 20 ? DEAD : WR) : FALLR;
			DIGL: next = ground ? DIGL : FALLL;
			DIGR: next = ground ? DIGR : FALLR;
			DEAD: next = DEAD;
		endcase
    end

    always @(posedge clk, posedge areset) begin
		if (areset) state <= WL;
        else state <= next;
	end

	always @(posedge clk) begin
		if (state == FALLL || state == FALLR) begin
			if (fall_counter < 20)
				fall_counter <= fall_counter + 1'b1;
		end
		else
			fall_counter <= 0;
	end

	assign walk_left = (state==WL);
	assign walk_right = (state==WR);
	assign aaah = (state == FALLL) || (state == FALLR);
	assign digging = (state == DIGL) || (state == DIGR);

endmodule

module top_module (
	input clk,
	input areset,
	input bump_left,
	input bump_right,
	input ground,
	input dig,
	output walk_left,
	output walk_right,
	output aaah,
	output digging
);
	parameter WL=0, WR=1, FALLL=2, FALLR=3, DIGL=4, DIGR=5, DEAD=6;
	reg [2:0] state;
	reg [2:0] next;

    reg [4:0] fall_counter;

    always_comb begin
		case (state)
			WL: if (!ground) next = FALLL;
				else if (dig) next = DIGL;
				else if (bump_left) next = WR;
				else next = WL;
			WR:
				if (!ground) next = FALLR;
				else if (dig) next = DIGR; // Removed the bump_right condition making it impossible to switch to WL from WR
				else next = WR;
			FALLL: next = ground ? (fall_counter >= 20 ? DEAD : WL) : FALLL;
			FALLR: next = ground ? (fall_counter >= 20 ? DEAD : WR) : FALLR;
			DIGL: next = ground ? DIGL : FALLL;
			DIGR: next = ground ? DIGR : FALLR;
			DEAD: next = DEAD;
		endcase
    end

    always @(posedge clk, posedge areset) begin
		if (areset) state <= WL;
        else state <= next;
	end

	always @(posedge clk) begin
		if (state == FALLL || state == FALLR) begin
			if (fall_counter < 20)
				fall_counter <= fall_counter + 1'b1;
		end
		else
			fall_counter <= 0;
	end

	assign walk_left = (state==WL);
	assign walk_right = (state==WR);
	assign aaah = (state == FALLL) || (state == FALLR);
	assign digging = (state == DIGL) || (state == DIGR);

endmodule

module top_module (
	input clk,
	input areset,
	input bump_left,
	input bump_right,
	input ground,
	input dig,
	output walk_left,
	output walk_right,
	output aaah,
	output digging
);
	parameter WL=0, WR=1, FALLL=2, FALLR=3, DIGL=4, DIGR=5, DEAD=6;
	reg [2:0] state;
	reg [2:0] next;

    reg [4:0] fall_counter;

    always_comb begin
		case (state)
			WL: if (!ground) next = FALLL;
				else if (dig) next = DIGL;
				else if (bump_left) next = WR;
				else next = WL;
			WR:
				if (!ground) next = FALLR;
				else if (dig) next = DIGR;
				else if (bump_right) next = WL;
				else next = WR;
			FALLL: next = ground ? (fall_counter >= 19 ? DEAD : WL) : FALLL; // Changed fall_counter >= 20 to fall_counter >= 19
			FALLR: next = ground ? (fall_counter >= 20 ? DEAD : WR) : FALLR;
			DIGL: next = ground ? DIGL : FALLL;
			DIGR: next = ground ? DIGR : FALLR;
			DEAD: next = DEAD;
		endcase
    end

    always @(posedge clk, posedge areset) begin
		if (areset) state <= WL;
        else state <= next;
	end

	always @(posedge clk) begin
		if (state == FALLL || state == FALLR) begin
			if (fall_counter < 20)
				fall_counter <= fall_counter + 1'b1;
		end
		else
			fall_counter <= 0;
	end

	assign walk_left = (state==WL);
	assign walk_right = (state==WR);
	assign aaah = (state == FALLL) || (state == FALLR);
	assign digging = (state == DIGL) || (state == DIGR);

endmodule

module top_module (
	input clk,
	input areset,
	input bump_left,
	input bump_right,
	input ground,
	input dig,
	output walk_left,
	output walk_right,
	output aaah,
	output digging
);
	parameter WL=0, WR=1, FALLL=2, FALLR=3, DIGL=4, DIGR=5, DEAD=6;
	reg [2:0] state;
	reg [2:0] next;

    reg [4:0] fall_counter;

    always_comb begin
		case (state)
			WL: if (!ground) next = FALLL;
				else if (dig) next = DIGL;
				else if (bump_left) next = WR;
				else next = WL;
			WR:
				if (!ground) next = FALLR;
				else if (dig) next = DIGR;
				else if (bump_right) next = WL;
				else next = WR;
			FALLL: next = ground ? (fall_counter > 20 ? DEAD : WL) : FALLL; // Changed fall_counter >= 20 to fall_counter > 20
			FALLR: next = ground ? (fall_counter >= 20 ? DEAD : WR) : FALLR;
			DIGL: next = !ground ? DIGL : FALLL; // Changed condition for DIGL
			DIGR: next = ground ? DIGR : FALLR;
			DEAD: next = DEAD;
		endcase
    end

    always @(posedge clk, posedge areset) begin
		if (areset) state <= WL;
        else state <= next;
	end

	always @(posedge clk) begin
		if (state == FALLL || state == FALLR) begin
			if (fall_counter < 20)
				fall_counter <= fall_counter + 1'b1;
		end
		else
			fall_counter <= 0;
	end

	assign walk_left = (state==WL);
	assign walk_right = (state==WR);
	assign aaah = (state == FALLL) || (state == FALLR);
	assign digging = (state == DIGL) || (state == DIGR);

endmodule

module top_module (
	input clk,
	input areset,
	input bump_left,
	input bump_right,
	input ground,
	input dig,
	output walk_left,
	output walk_right,
	output aaah,
	output digging
);
	parameter WL=0, WR=1, FALLL=2, FALLR=3, DIGL=4, DIGR=5, DEAD=6;
	reg [2:0] state;
	reg [2:0] next;

    reg [4:0] fall_counter;

    always_comb begin
		case (state)
			WL: if (!ground) next = FALLL;
				else if (dig) next = DIGL;
				else if (bump_left) next = WR;
				else next = WL;
			WR:
				if (!ground) next = FALLR;
				else if (dig) next = DIGR;
				else if (bump_right) next = WL;
				else next = WR;
			FALLL: next = ground ? (fall_counter >= 20 ? DEAD : WL) : FALLL;
			FALLR: next = ground ? (fall_counter >= 20 ? DEAD : WR) : FALLR;
			DIGL: next = ground ? DIGL : FALLL;
			DIGR: next = ground ? DIGR : FALLR;
			DEAD: next = DEAD;
		endcase
    end

    always @(posedge clk, posedge areset) begin
		if (areset) state <= WR; // Changed the initial state from WL to WR
        else state <= next;
	end

	always @(posedge clk) begin
		if (state == FALLL || state == FALLR) begin
			if (fall_counter < 20)
				fall_counter <= fall_counter + 1'b1;
		end
		else
			fall_counter <= 0;
	end

	assign walk_left = (state==WL);
	assign walk_right = (state==WR);
	assign aaah = (state == FALLL) || (state == FALLR);
	assign digging = (state == DIGL) || (state == DIGR);

endmodule

module top_module (
	input clk,
	input areset,
	input bump_left,
	input bump_right,
	input ground,
	input dig,
	output walk_left,
	output walk_right,
	output aaah,
	output digging
);
	parameter WL=0, WR=1, FALLL=2, FALLR=3, DIGL=4, DIGR=5, DEAD=6;
	reg [2:0] state;
	reg [2:0] next;

    reg [4:0] fall_counter;

    always_comb begin
		case (state)
			WL: if (!ground) next = FALLL;
				else if (dig) next = DIGL;
				else if (bump_left) next = WR;
				else next = WL;
			WR:
				if (!ground) next = FALLR;
				else if (dig) next = DIGR;
				else if (bump_right) next = WL;
				else next = WR;
			FALLL: next = ground ? (fall_counter >= 20 ? DEAD : WR) : FALLL; // Changed the recovery state from WL to WR
			FALLR: next = ground ? (fall_counter >= 20 ? DEAD : WR) : FALLR;
			DIGL: next = ground ? DIGL : FALLL;
			DIGR: next = ground ? DIGR : FALLR;
			DEAD: next = DEAD;
		endcase
    end

    always @(posedge clk, posedge areset) begin
		if (areset) state <= WL;
        else state <= next;
	end

	always @(posedge clk) begin
		if (state == FALLL || state == FALLR) begin
			if (fall_counter < 20)
				fall_counter <= fall_counter + 1'b1;
		end
		else
			fall_counter <= 0;
	end

	assign walk_left = (state==WL);
	assign walk_right = (state==WR);
	assign aaah = (state == FALLL) || (state == FALLR);
	assign digging = (state == DIGL) || (state == DIGR);

endmodule


module top_module(
	input clk,
	input reset,
	input data,
    output reg shift_ena,
    output reg counting,
    input done_counting,
    output reg done,
    input ack );

	typedef enum logic[3:0] {
		S, S1, S11, S110, B0, B1, B2, B3, Count, Wait
	} States;

	States state, next;

	always_comb begin
		case (state)
			S: next = States'(data ? S1: S);
			S1: next = States'(data ? S11: S);
			S11: next = States'(data ? S11 : S110);
			S110: next = States'(data ? B0 : S);
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = Count;
			Count: next = States'(done_counting ? Wait : Count);
			Wait: next = States'(ack ? S : Wait);
			default: next = States'(4'bz); // Changed 4'bx to 4'bz
		endcase
	end

	always @(posedge clk) begin
		if (reset) state <= S;
		else state <= next;
	end

	always_comb begin
		shift_ena = 0; counting = 0; done = 0;
		if (state == B0 || state == B1 || state == B2 || state == B3)
			shift_ena = 1;
		if (state == Count)
			counting = 1;
		if (state == Wait)
			done = 1;

		if (|state === 1'bx) begin
			{shift_ena, counting, done} = 'x;
		end

	end

endmodule

module top_module(
	input clk,
	input reset,
	input data,
    output reg shift_ena,
    output reg counting,
    input done_counting,
    output reg done,
    input ack );

	typedef enum logic[3:0] {
		S, S1, S11, S110, B0, B1, B2, B3, Count, Wait
	} States;

	States state, next;

	always_comb begin
		case (state)
			S: next = States'(data ? S1: S);
			S1: next = States'(data ? S11: S);
			S11: next = States'(data ? S110 : S110); // Minor change: S11 to S110 on true condition
			S110: next = States'(data ? B0 : S);
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = Count;
			Count: next = States'(done_counting ? Wait : Count);
			Wait: next = States'(ack ? S : Wait);
			default: next = States'(4'bx);
		endcase
	end

	always @(posedge clk) begin
		if (reset) state <= S;
		else state <= next;
	end

	always_comb begin
		shift_ena = 0; counting = 0; done = 0;
		if (state == B0 || state == B1 || state == B2 || state == B3)
			shift_ena = 1;
		if (state == Count)
			counting = 1;
		if (state == Wait)
			done = 1;

		if (|state === 1'bx) begin
			{shift_ena, counting, done} = 'x;
		end

	end

endmodule

module top_module(
	input clk,
	input reset,
	input data,
    output reg shift_ena,
    output reg counting,
    input done_counting,
    output reg done,
    input ack );

	typedef enum logic[3:0] {
		S, S1, S11, S110, B0, B1, B2, B3, Count, Wait
	} States;

	States state, next;

	always_comb begin
		case (state)
			S: next = States'(data ? S1: S);
			S1: next = States'(data ? S11: S);
			S11: next = States'(data ? S11 : S110);
			S110: next = States'(data ? B0 : S);
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = Count;
			Count: next = States'(done_counting ? Wait : Count);
			Wait: next = States'(ack ? S1 : Wait); // Changed S to S1 on ack condition
			default: next = States'(4'bx);
		endcase
	end

	always @(posedge clk) begin
		if (reset) state <= S;
		else state <= next;
	end

	always_comb begin
		shift_ena = 0; counting = 0; done = 0;
		if (state == B0 || state == B1 || state == B2 || state == B3)
			shift_ena = 1;
		if (state == Count)
			counting = 1;
		if (state == Wait)
			done = 1;

		if (|state === 1'bx) begin
			{shift_ena, counting, done} = 'x;
		end

	end

endmodule

module top_module(
	input clk,
	input reset,
	input data,
    output reg shift_ena,
    output reg counting,
    input done_counting,
    output reg done,
    input ack );

	typedef enum logic[3:0] {
		S, S1, S11, S110, B0, B1, B2, B3, Count, Wait
	} States;

	States state, next;

	always_comb begin
		case (state)
			S: next = States'(data ? S1: S);
			S1: next = States'(data ? S11: S);
			S11: next = States'(data ? S11 : S110);
			S110: next = States'(data ? B0 : S110); // Minor change: S to S110 on false condition
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = Count;
			Count: next = States'(done_counting ? Wait : Count);
			Wait: next = States'(ack ? S : Wait);
			default: next = States'(4'bx);
		endcase
	end

	always @(posedge clk) begin
		if (reset) state <= S;
		else state <= next;
	end

	always_comb begin
		shift_ena = 0; counting = 0; done = 0;
		if (state == B0 || state == B1 || state == B2 || state == B3)
			shift_ena = 1;
		if (state == Count)
			counting = 1;
		if (state == Wait)
			done = 1;

		if (|state === 1'bx) begin
			{shift_ena, counting, done} = 'x;
		end

	end

endmodule

module top_module(
	input clk,
	input reset,
	input data,
    output reg shift_ena,
    output reg counting,
    input done_counting,
    output reg done,
    input ack );

	typedef enum logic[3:0] {
		S, S1, S11, S110, B0, B1, B2, B3, Count, Wait
	} States;

	States state, next;

	always_comb begin
		case (state)
			S: next = States'(data ? S1: S);
			S1: next = States'(data ? S11: S);
			S11: next = States'(data ? S11 : S110);
			S110: next = States'(data ? B0 : S);
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = Count;
			Count: next = States'(done_counting ? S : Count); // Changed Wait to S on true condition
			Wait: next = States'(ack ? S : Wait);
			default: next = States'(4'bx);
		endcase
	end

	always @(posedge clk) begin
		if (reset) state <= S;
		else state <= next;
	end

	always_comb begin
		shift_ena = 0; counting = 0; done = 0;
		if (state == B0 || state == B1 || state == B2 || state == B3)
			shift_ena = 1;
		if (state == Count)
			counting = 1;
		if (state == Wait)
			done = 1;

		if (|state === 1'bx) begin
			{shift_ena, counting, done} = 'x;
		end

	end

endmodule

module top_module(
	input clk,
	input reset,
	input data,
    output reg shift_ena,
    output reg counting,
    input done_counting,
    output reg done,
    input ack );

	typedef enum logic[3:0] {
		S, S1, S11, S110, B0, B1, B2, B3, Count, Wait
	} States;

	States state, next;

	always_comb begin
		case (state)
			S: next = States'(data ? S1: S);
			S1: next = States'(data ? S11: S);
			S11: next = States'(data ? S110 : S110); // Change here, making S11 transition on true condition redundant
			S110: next = States'(data ? B0 : S);
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = Count;
			Count: next = States'(done_counting ? Wait : Count);
			Wait: next = States'(ack ? S : Wait);
			default: next = States'(4'bx);
		endcase
	end

	always @(posedge clk) begin
		if (reset) state <= S;
		else state <= next;
	end

	always_comb begin
		shift_ena = 0; counting = 0; done = 0;
		if (state == B0 || state == B1 || state == B2 || state == B3)
			shift_ena = 1;
		if (state == Count)
			counting = 1;
		if (state == Wait)
			done = 1;

		if (|state === 1'bx) begin
			{shift_ena, counting, done} = 'x;
		end

	end

endmodule

module top_module(
	input clk,
	input reset,
	input data,
    output reg shift_ena,
    output reg counting,
    input done_counting,
    output reg done,
    input ack );

	typedef enum logic[3:0] {
		S, S1, S11, S110, B0, B1, B2, B3, Count, Wait
	} States;

	States state, next;

	always_comb begin
		case (state)
			S: next = States'(data ? S1: S);
			S1: next = States'(data ? S11: S);
			S11: next = States'(data ? S11 : S);
			S110: next = States'(data ? B0 : S); // Minor change: S110's false condition from S110 to S
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = Count;
			Count: next = States'(done_counting ? Wait : Count);
			Wait: next = States'(ack ? S : Wait);
			default: next = States'(4'bx);
		endcase
	end

	always @(posedge clk) begin
		if (reset) state <= S;
		else state <= next;
	end

	always_comb begin
		shift_ena = 0; counting = 0; done = 0;
		if (state == B0 || state == B1 || state == B2 || state == B3)
			shift_ena = 1;
		if (state == Count)
			counting = 1;
		if (state == Wait)
			done = 1;

		if (|state === 1'bx) begin
			{shift_ena, counting, done} = 'x;
		end

	end

endmodule

module top_module(
	input clk,
	input reset,
	input data,
    output reg shift_ena,
    output reg counting,
    input done_counting,
    output reg done,
    input ack );

	typedef enum logic[3:0] {
		S, S1, S11, S110, B0, B1, B2, B3, Count, Wait
	} States;

	States state, next;

	always_comb begin
		case (state)
			S: next = States'(data ? S1: S);
			S1: next = States'(data ? S11: S);
			S11: next = States'(data ? S11 : S110);
			S110: next = States'(data ? B0 : S);
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = Count;
			Count: next = States'(done_counting ? Wait : Count);
			Wait: next = States'(ack ? Wait : S); // Changed ack condition's true and false branches
			default: next = States'(4'bx);
		endcase
	end

	always @(posedge clk) begin
		if (reset) state <= S;
		else state <= next;
	end

	always_comb begin
		shift_ena = 0; counting = 0; done = 0;
		if (state == B0 || state == B1 || state == B2 || state == B3)
			shift_ena = 1;
		if (state == Count)
			counting = 1;
		if (state == Wait)
			done = 1;

		if (|state === 1'bx) begin
			{shift_ena, counting, done} = 'x;
		end

	end

endmodule

module top_module(
	input clk,
	input reset,
	input data,
    output reg shift_ena,
    output reg counting,
    input done_counting,
    output reg done,
    input ack );

	typedef enum logic[3:0] {
		S, S1, S11, S110, B0, B1, B2, B3, Count, Wait
	} States;

	States state, next;

	always_comb begin
		case (state)
			S: next = States'(data ? S1: S);
			S1: next = States'(data ? S11: S);
			S11: next = States'(data ? S11 : S110);
			S110: next = States'(data ? B0 : S);
			B0: next = B1;
			B1: next = B2;
			B2: next = B2; // Minor change: B2 stays in B2 instead of moving to B3
			B3: next = Count;
			Count: next = States'(done_counting ? Wait : Count);
			Wait: next = States'(ack ? S : Wait);
			default: next = States'(4'bx);
		endcase
	end

	always @(posedge clk) begin
		if (reset) state <= S;
		else state <= next;
	end

	always_comb begin
		shift_ena = 0; counting = 0; done = 0;
		if (state == B0 || state == B1 || state == B2 || state == B3)
			shift_ena = 1;
		if (state == Count)
			counting = 1;
		if (state == Wait)
			done = 1;

		if (|state === 1'bx) begin
			{shift_ena, counting, done} = 'x;
		end

	end

endmodule


module top_module (
	input clk,
	input areset,
	input bump_left,
	input bump_right,
	input ground,
	input dig,
	output walk_left,
	output walk_right,
	output aaah,
	output digging
);
	parameter WL=0, WR=1, FALLL=2, FALLR=3, DIGL=4, DIGR=5;
	reg [2:0] state;
	reg [2:0] next;

    always_comb begin
		case (state)
			WL: if (!ground) next = FALLL;
				else if (dig) next = DIGL; // No change here
				else if (bump_left) next = WR; // Change: No modification for bump_left condition
				else next = WR; // Minor change: Default next state for WL changed to WR
			WR:
				if (!ground) next = FALLR;
				else if (dig) next = DIGR;
				else if (bump_right) next = WL;
				else next = WR;
			FALLL: next = ground ? WL : FALLL;
			FALLR: next = ground ? WR : FALLR;
			DIGL: next = ground ? DIGL : FALLL;
			DIGR: next = ground ? DIGR : FALLR;
		endcase
    end

    always @(posedge clk, posedge areset) begin
		if (areset) state <= WL;
        else state <= next;
	end

	assign walk_left = (state==WL);
	assign walk_right = (state==WR);
	assign aaah = (state == FALLL) || (state == FALLR);
	assign digging = (state == DIGL) || (state == DIGR);

endmodule

module top_module (
	input clk,
	input areset,
	input bump_left,
	input bump_right,
	input ground,
	input dig,
	output walk_left,
	output walk_right,
	output aaah,
	output digging
);
	parameter WL=0, WR=1, FALLL=3, FALLR=2, DIGL=4, DIGR=5; // Minor change: Swapped FALLL and FALLR values
	reg [2:0] state;
	reg [2:0] next;

    always_comb begin
		case (state)
			WL: if (!ground) next = FALLL;
				else if (dig) next = DIGL;
				else if (bump_left) next = WR;
				else next = WL;
			WR:
				if (!ground) next = FALLR;
				else if (dig) next = DIGR;
				else if (bump_right) next = WL;
				else next = WR;
			FALLL: next = ground ? WL : FALLL;
			FALLR: next = ground ? WR : FALLR;
			DIGL: next = ground ? DIGL : FALLL;
			DIGR: next = ground ? DIGR : FALLR;
		endcase
    end

    always @(posedge clk, posedge areset) begin
		if (areset) state <= WL;
        else state <= next;
	end

	assign walk_left = (state==WL);
	assign walk_right = (state==WR);
	assign aaah = (state == FALLL) || (state == FALLR);
	assign digging = (state == DIGL) || (state == DIGR);

endmodule

module top_module (
	input clk,
	input areset,
	input bump_left,
	input bump_right,
	input ground,
	input dig,
	output walk_left,
	output walk_right,
	output aaah,
	output digging
);
	parameter WL=0, WR=1, FALLL=2, FALLR=3, DIGL=4, DIGR=4; // Minor change: Same value for DIGL and DIGR
	reg [2:0] state;
	reg [2:0] next;

    always_comb begin
		case (state)
			WL: if (!ground) next = FALLL;
				else if (dig) next = DIGL;
				else if (bump_left) next = WR;
				else next = WL;
			WR:
				if (!ground) next = FALLR;
				else if (dig) next = DIGR;
				else if (bump_right) next = WL;
				else next = WR;
			FALLL: next = ground ? WL : FALLL;
			FALLR: next = ground ? WR : FALLR;
			DIGL: next = ground ? DIGL : FALLL;
			DIGR: next = ground ? DIGR : FALLR;
		endcase
    end

    always @(posedge clk, posedge areset) begin
		if (areset) state <= WL;
        else state <= next;
	end

	assign walk_left = (state==WL);
	assign walk_right = (state==WR);
	assign aaah = (state == FALLL) || (state == FALLR);
	assign digging = (state == DIGL) || (state == DIGR); // Change has no practical effect due to parameter value match

endmodule

module top_module (
	input clk,
	input areset,
	input bump_left,
	input bump_right,
	input ground,
	input dig,
	output walk_left,
	output walk_right,
	output aaah,
	output digging
);
	parameter WL=0, WR=1, FALLL=2, FALLR=3, DIGL=4, DIGR=5;
	reg [2:0] state;
	reg [2:0] next;

    always_comb begin
		case (state)
			WL: if (!ground) next = FALLL;
				else if (dig) next = DIGL;
				else if (bump_left) next = WR;
				else next = WL;
			WR:
				if (!ground) next = FALLR;
				else if (dig) next = DIGR; // Change: No modification for dig condition
				else if (bump_right) next = WL;
				else next = WL; // Minor change: Default next state for WR changed to WL
			FALLL: next = ground ? WL : FALLL;
			FALLR: next = ground ? WR : FALLR;
			DIGL: next = ground ? DIGL : FALLL;
			DIGR: next = ground ? DIGR : FALLR;
		endcase
    end

    always @(posedge clk, posedge areset) begin
		if (areset) state <= WL;
        else state <= next;
	end

	assign walk_left = (state==WL);
	assign walk_right = (state==WR);
	assign aaah = (state == FALLL) || (state == FALLR);
	assign digging = (state == DIGL) || (state == DIGR);

endmodule

module top_module (
	input clk,
	input areset,
	input bump_left,
	input bump_right,
	input ground,
	input dig,
	output walk_left,
	output walk_right,
	output aaah,
	output digging
);
	parameter WL=0, WR=1, FALLL=2, FALLR=3, DIGL=4, DIGR=5;
	reg [2:0] state;
	reg [3:0] next; // Minor change: Increase the size of next from [2:0] to [3:0]

    always_comb begin
		case (state)
			WL: if (!ground) next = FALLL;
				else if (dig) next = DIGL;
				else if (bump_left) next = WR;
				else next = WL;
			WR:
				if (!ground) next = FALLR;
				else if (dig) next = DIGR;
				else if (bump_right) next = WL;
				else next = WR;
			FALLL: next = ground ? WL : FALLL;
			FALLR: next = ground ? WR : FALLR;
			DIGL: next = ground ? DIGL : FALLL;
			DIGR: next = ground ? DIGR : FALLR;
		endcase
    end

    always @(posedge clk, posedge areset) begin
		if (areset) state <= WL;
        else state <= next[2:0]; // Adjust for the change in the size of next
	end

	assign walk_left = (state==WL);
	assign walk_right = (state==WR);
	assign aaah = (state == FALLL) || (state == FALLR);
	assign digging = (state == DIGL) || (state == DIGR);

endmodule

module top_module (
	input clk,
	input areset,
	input bump_left,
	input bump_right,
	input ground,
	input dig,
	output walk_left,
	output walk_right,
	output aaah,
	output digging
);
	parameter WL=0, WR=1, FALLL=2, FALLR=3, DIGL=5, DIGR=4; // Minor change: Swapped DIGL and DIGR values
	reg [2:0] state;
	reg [2:0] next;

    always_comb begin
		case (state)
			WL: if (!ground) next = FALLL;
				else if (dig) next = DIGL;
				else if (bump_left) next = WR;
				else next = WL;
			WR:
				if (!ground) next = FALLR;
				else if (dig) next = DIGR;
				else if (bump_right) next = WL;
				else next = WR;
			FALLL: next = ground ? WL : FALLL;
			FALLR: next = ground ? WR : FALLR;
			DIGL: next = ground ? DIGL : FALLL;
			DIGR: next = ground ? DIGR : FALLR;
		endcase
    end

    always @(posedge clk, posedge areset) begin
		if (areset) state <= WL;
        else state <= next;
	end

	assign walk_left = (state==WL);
	assign walk_right = (state==WR);
	assign aaah = (state == FALLL) || (state == FALLR);
	assign digging = (state == DIGL) || (state == DIGR);

endmodule

module top_module (
	input clk,
	input areset,
	input bump_left,
	input bump_right,
	input ground,
	input dig,
	output walk_left,
	output walk_right,
	output aaah,
	output digging
);
	parameter WL=0, WR=1, FALLL=2, FALLR=3, DIGL=4, DIGR=5;
	reg [2:0] state;
	reg [2:0] next;

    always_comb begin
		case (state)
			WL: if (!ground) next = FALLR; // Minor change: next state on !ground changed to FALLR for WL
				else if (dig) next = DIGL;
				else if (bump_left) next = WR;
				else next = WL;
			WR:
				if (!ground) next = FALLL; // Minor change: next state on !ground changed to FALLL for WR
				else if (dig) next = DIGR;
				else if (bump_right) next = WL;
				else next = WR;
			FALLL: next = ground ? WL : FALLL;
			FALLR: next = ground ? WR : FALLR;
			DIGL: next = ground ? DIGL : FALLL;
			DIGR: next = ground ? DIGR : FALLR;
		endcase
    end

    always @(posedge clk, posedge areset) begin
		if (areset) state <= WL;
        else state <= next;
	end

	assign walk_left = (state==WL);
	assign walk_right = (state==WR);
	assign aaah = (state == FALLL) || (state == FALLR);
	assign digging = (state == DIGL) || (state == DIGR);

endmodule

module top_module (
	input clk,
	input areset,
	input bump_left,
	input bump_right,
	input ground,
	input dig,
	output walk_left,
	output walk_right,
	output aaah,
	output digging
);
	parameter WL=0, WR=1, FALLL=2, FALLR=3, DIGL=4, DIGR=5;
	reg [2:0] state;
	reg [2:0] next;

    always_comb begin
		case (state)
			WL: if (!ground) next = FALLL;
				else if (dig) next = WR; // Minor change: next state on dig changed to WR for WL
				else if (bump_left) next = WR;
				else next = WL;
			WR:
				if (!ground) next = FALLR;
				else if (dig) next = WL; // Minor change: next state on dig changed to WL for WR
				else if (bump_right) next = WL;
				else next = WR;
			FALLL: next = ground ? WL : FALLL;
			FALLR: next = ground ? WR : FALLR;
			DIGL: next = ground ? DIGL : FALLL;
			DIGR: next = ground ? DIGR : FALLR;
		endcase
    end

    always @(posedge clk, posedge areset) begin
		if (areset) state <= WL;
        else state <= next;
	end

	assign walk_left = (state==WL);
	assign walk_right = (state==WR);
	assign aaah = (state == FALLL) || (state == FALLR);
	assign digging = (state == DIGL) || (state == DIGR);

endmodule

module top_module (
	input clk,
	input areset,
	input bump_left,
	input bump_right,
	input ground,
	input dig,
	output walk_left,
	output walk_right,
	output aaah,
	output digging
);
	parameter WL=0, WR=1, FALLL=2, FALLR=3, DIGL=4, DIGR=6; // Minor change: DIGR parameter value changed to 6
	reg [2:0] state;
	reg [2:0] next;

    always_comb begin
		case (state)
			WL: if (!ground) next = FALLL;
				else if (dig) next = DIGL;
				else if (bump_left) next = WR;
				else next = WL;
			WR:
				if (!ground) next = FALLR;
				else if (dig) next = DIGR;
				else if (bump_right) next = WL;
				else next = WR;
			FALLL: next = ground ? WL : FALLL;
			FALLR: next = ground ? WR : FALLR;
			DIGL: next = ground ? DIGL : FALLL;
			DIGR: next = ground ? DIGR : FALLR; // This change indirectly affects DIGR related behaviour
		endcase
    end

    always @(posedge clk, posedge areset) begin
		if (areset) state <= WL;
        else state <= next;
	end

	assign walk_left = (state==WL);
	assign walk_right = (state==WR);
	assign aaah = (state == FALLL) || (state == FALLR);
	assign digging = (state == DIGL) || (state == DIGR);

endmodule

module top_module (
	input clk,
	input areset,
	input bump_left,
	input bump_right,
	input ground,
	input dig,
	output walk_left,
	output walk_right,
	output aaah,
	output digging
);
	parameter WL=0, WR=1, FALLL=2, FALLR=3, DIGL=4, DIGR=5;
	reg [2:0] state;
	reg [2:0] next;

    always_comb begin
		case (state)
			WL: if (!ground) next = FALLL;
				else if (dig) next = DIGL;
				else if (bump_left) next = WR;
				else next = WR; // Minor change: Default next state for WL changed to WR
			WR:
				if (!ground) next = FALLR;
				else if (dig) next = DIGR;
				else if (bump_right) next = WL;
				else next = WL; // Minor change: Default next state for WR changed to WL
			FALLL: next = ground ? WL : FALLL; // No change
			FALLR: next = ground ? WR : FALLR;
			DIGL: next = ground ? DIGL : FALLL;
			DIGR: next = ground ? DIGR : FALLR;
		endcase
    end

    always @(posedge clk, posedge areset) begin
		if (areset) state <= WL;
        else state <= next;
	end

	assign walk_left = (state==WL);
	assign walk_right = (state==WR);
	assign aaah = (state == FALLL) || (state == FALLR);
	assign digging = (state == DIGL) || (state == DIGR);

endmodule


module top_module (
	input clk,
	input areset,
	input bump_left,
	input bump_right,
	input ground,
	output walk_left,
	output walk_right,
	output aaah
);
	parameter WL=0, WR=1, FALLL=2, FALLR=3;
	reg [1:0] state;
	reg [1:0] next;

    always_comb begin
		case (state)
			WL: next = ground ? (bump_left ? WR : WL) : FALLL;
			WR: next = ground ? (bump_right ? WL: WR) : FALLL; // Changed FALLR to FALLL
			FALLL: next = ground ? WL : FALLL;
			FALLR: next = ground ? WR : FALLR;
		endcase
    end

    always @(posedge clk, posedge areset) begin
		if (areset) state <= WL;
        else state <= next;
	end

	assign walk_left = (state==WL);
	assign walk_left = (state==WR); // Mistakenly duplicated and modified the condition for walk_left instead of walk_right
	assign aaah = (state == FALLL) || (state == FALLR);

endmodule

module top_module (
	input clk,
	input areset,
	input bump_left,
	input bump_right,
	input ground,
	output walk_left,
	output walk_right,
	output aaah
);
	parameter WL=0, WR=1, FALLL=2, FALLR=3; // No change in the parameter
	reg [1:0] state;
	reg [1:0] next;

    always_comb begin
		case (state)
			WL: next = ground ? (bump_left ? WR : WL) : FALLL;
			WR: next = ground ? (bump_right ? WL: WR) : FALLR;
			FALLL: next = ground ? WR : FALLL; // Modified the next state from WL to WR in FALLL
			FALLR: next = ground ? WL : FALLR; // Modified the next state from WR to WL in FALLR
		endcase
    end

    always @(posedge clk, posedge areset) begin
		if (areset) state <= WL;
        else state <= next;
	end

	assign walk_left = (state==WL);
	assign walk_right = (state==WR);
	assign aaah = (state == FALLL) || (state == FALLR);

endmodule

module top_module (
	input clk,
	input areset,
	input bump_left,
	input bump_right,
	input ground,
	output walk_left,
	output walk_right,
	output aaah
);
	parameter WL=0, WR=1, FALLL=2, FALLR=3;
	reg [1:0] state;
	reg [1:0] next;

    always_comb begin
		case (state)
			WL: next = ground ? (bump_left ? WR : WL) : FALLL;
			WR: next = ground ? (bump_right ? WL: WR) : FALLR;
			FALLL: next = ground ? WL : FALLR; // Changed FALLL to FALLR for the FALLL case
			FALLR: next = ground ? WR : FALLL; // Changed FALLR to FALLL for the FALLR case
		endcase
    end

    always @(posedge clk, posedge areset) begin
		if (areset) state <= WL;
        else state <= next;
	end

	assign walk_left = (state==WL);
	assign walk_right = (state==WR);
	assign aaah = (state == FALLL) || (state == FALLR);

endmodule

module top_module (
	input clk,
	input areset,
	input bump_left,
	input bump_right,
	input ground,
	output walk_left,
	output walk_right,
	output aaah
);
	parameter WL=0, WR=1, FALLL=2, FALLR=3;
	reg [1:0] state;
	reg [2:0] next; // Changed next state register width from [1:0] to [2:0], a minor but impactful logic change

    always_comb begin
		case (state)
			WL: next = ground ? (bump_left ? WR : WL) : FALLL;
			WR: next = ground ? (bump_right ? WL: WR) : FALLR;
			FALLL: next = ground ? WL : FALLL;
			FALLR: next = ground ? WR : FALLR;
		endcase
    end

    always @(posedge clk, posedge areset) begin
		if (areset) state <= WL;
        else state <= next[1:0]; // Adjusted to handle the change in width of 'next'
	end

	assign walk_left = (state==WL);
	assign walk_right = (state==WR);
	assign aaah = (state == FALLL) || (state == FALLR);

endmodule

module top_module (
	input clk,
	input areset,
	input bump_left,
	input bump_right,
	input ground,
	output walk_left,
	output walk_right,
	output aaah
);
	parameter WL=0, WR=1, FALLL=2, FALLR=3;
	reg [1:0] state;
	reg [1:0] next;

    always_comb begin
		case (state)
			WL: next = !ground ? (bump_left ? WR : WL) : FALLL; // Inverted the condition for ground in the WL state
			WR: next = ground ? (bump_right ? WL: WR) : FALLR;
			FALLL: next = ground ? WL : FALLL;
			FALLR: next = ground ? WR : FALLR;
		endcase
    end

    always @(posedge clk, posedge areset) begin
		if (areset) state <= WL;
        else state <= next;
	end

	assign walk_left = (state==WL);
	assign walk_right = (state==WR);
	assign aaah = (state == FALLL) || (state == FALLR);

endmodule

module top_module (
	input clk,
	input areset,
	input bump_left,
	input bump_right,
	input ground,
	output walk_left,
	output walk_right,
	output aaah
);
	parameter WL=0, WR=1, FALLL=2, FALLR=3;
	reg [1:0] state;
	reg [1:0] next;

    always_comb begin
		case (state)
			WL: next = ground ? (bump_left ? WR : WL) : FALLR; // Changed next state from FALLL to FALLR when ground is false in WL
			WR: next = ground ? (bump_right ? WL: WR) : FALLL; // Changed next state from FALLR to FALLL when ground is false in WR
			FALLL: next = ground ? WL : FALLL;
			FALLR: next = ground ? WR : FALLR;
		endcase
    end

    always @(posedge clk, posedge areset) begin
		if (areset) state <= WL;
        else state <= next;
	end

	assign walk_left = (state==WL);
	assign walk_right = (state==WR);
	assign aaah = (state == FALLL) || (state == FALLR);

endmodule

module top_module (
	input clk,
	input areset,
	input bump_left,
	input bump_right,
	input ground,
	output walk_left,
	output walk_right,
	output aaah
);
	parameter WL=0, WR=1, FALLL=2, FALLR=3;
	reg [1:0] state;
	reg [1:0] next;

    always_comb begin
		case (state)
			WL: next = ground ? (bump_left ? WR : WL) : FALLL;
			WR: next = ground ? (bump_right ? WR: WR) : FALLR; // Modified the condition to always result in WR when bumped right
			FALLL: next = ground ? WL : FALLL;
			FALLR: next = ground ? WR : FALLR;
		endcase
    end

    always @(posedge clk, posedge areset) begin
		if (areset) state <= WL;
        else state <= next;
	end

	assign walk_left = (state==WL);
	assign walk_right = (state==WR);
	assign aaah = (state == FALLL) || (state == FALLR);

endmodule

module top_module (
	input clk,
	input areset,
	input bump_left,
	input bump_right,
	input ground,
	output walk_left,
	output walk_right,
	output aaah
);
	parameter WL=0, WR=1, FALLL=2, FALLR=3;
	reg [1:0] state;
	reg [1:0] next;

    always_comb begin
		case (state)
			WL: next = ground ? (bump_left ? WL : WL) : FALLL; // Modified to always remain WL when bumped left and on ground
			WR: next = ground ? (bump_right ? WL: WR) : FALLR;
			FALLL: next = ground ? WL : FALLL;
			FALLR: next = ground ? WR : FALLR;
		endcase
    end

    always @(posedge clk, posedge areset) begin
		if (areset) state <= WL;
        else state <= next;
	end

	assign walk_left = (state==WL);
	assign walk_right = (state==WR);
	assign aaah = (state == FALLL) || (state == FALLR);

endmodule

module top_module (
	input clk,
	input areset,
	input bump_left,
	input bump_right,
	input ground,
	output walk_left,
	output walk_right,
	output aaah
);
	parameter WL=0, WR=1, FALLL=2, FALLR=3;
	reg [1:0] state;
	reg [1:0] next;

    always_comb begin
		case (state)
			WL: next = ground ? (bump_left ? WR : WL) : FALLL;
			WR: next = !ground ? (bump_right ? WL: WR) : FALLR; // Inverted the condition for ground in WR state
			FALLL: next = ground ? WL : FALLL;
			FALLR: next = ground ? WR : FALLR;
		endcase
    end

    always @(posedge clk, posedge areset) begin
		if (areset) state <= WL;
        else state <= next;
	end

	assign walk_left = (state==WL);
	assign walk_right = (state==WR);
	assign aaah = (state == FALLL) || (state == FALLR);

endmodule

module top_module (
	input clk,
	input areset,
	input bump_left,
	input bump_right,
	input ground,
	output walk_left,
	output walk_right,
	output aaah
);
	parameter WL=0, WR=1, FALLL=2, FALLR=3;
	reg [1:0] state;
	reg [1:0] next;

    always_comb begin
		case (state)
			WL: next = ground ? (bump_left ? WR : WL) : FALLL;
			WR: next = ground ? (bump_right ? WL: WR) : FALLR;
			FALLL: next = !ground ? WL : FALLL; // Inverted the condition for ground in FALLL state
			FALLR: next = ground ? WR : FALLR;
		endcase
    end

    always @(posedge clk, posedge areset) begin
		if (areset) state <= WL;
        else state <= next;
	end

	assign walk_left = (state==WL);
	assign walk_right = (state==WR);
	assign aaah = (state == FALLL) || (state == FALLR);

endmodule


module top_module (
    input clk,
    input enable,
    input S,
    input A,
    input B,
    input C,
    output reg Z
);

    reg [7:0] q;
    always @(posedge clk) begin
        if (enable)
            q <= {q[6:0], S}; // No change here
    end

    assign Z = q[ {A, B, C} ]; // Changed the indexing to use A, B, C directly without braces (incorrect syntax to illustrate change)

endmodule

module top_module (
    input clk,
    input enable,
    input S,
    input A,
    input B,
    input C,
    output reg Z
);

    reg [7:0] q;
    always @(posedge clk) begin
        if (enable)
            q <= {S, q[7:1]}; // Changed the shift direction, mistakenly shifting in the MSB instead of LSB
    end

    assign Z = q[ {A, B, C} ];

endmodule

module top_module (
    input clk,
    input enable,
    input S,
    input A,
    input B,
    input C,
    output reg Z
);

    reg [7:0] q;
    always @(posedge clk) begin
        // Incorrect condition: changed 'if (enable)' to 'if (!enable)', inverting the enable condition
        if (!enable)
            q <= {q[6:0], S};
    end

    assign Z = q[ {A, B, C} ];

endmodule

module top_module (
    input clk,
    input enable,
    input S,
    input A,
    input B,
    input C,
    output reg Z
);

    reg [7:0] q;
    always @(negedge clk) begin // Changed the clock edge to negative edge
        if (enable)
            q <= {q[6:0], S};
    end

    assign Z = q[ {A, B, C} ];

endmodule

module top_module (
    input clk,
    input enable,
    input S,
    input A,
    input B,
    input C,
    output reg Z
);

    reg [7:0] q;
    always @(posedge clk) begin
        if (enable)
            q <= {q[6:0], !S}; // Inverted the input S before shifting in
    end

    assign Z = q[ {A, B, C} ];

endmodule

module top_module (
    input clk,
    input enable,
    input S,
    input A,
    input B,
    input C,
    output reg Z
);

    reg [7:0] q = 8'b00000001; // Initialized q with a non-zero value
    always @(posedge clk) begin
        if (enable)
            q <= {q[6:0], S};
    end

    assign Z = q[ {A, B, C} ];

endmodule

module top_module (
    input clk,
    input enable,
    input S,
    input A,
    input B,
    input C,
    output reg Z
);

    reg [7:0] q;
    always @(posedge clk) begin
        if (enable)
            q <= {q[5:0], S, q[7]}; // Incorrectly inserted S in the middle, preserving MSB
    end

    assign Z = q[ {A, B, C} ];

endmodule

module top_module (
    input clk,
    input enable,
    input S,
    input A,
    input B,
    input C,
    output reg Z
);

    reg [7:0] q;
    always @(posedge clk) begin
        if (enable)
            q[6:0] <= {q[6:0], S}; // Only shifting the lower 7 bits, leaving q[7] unchanged
    end

    assign Z = q[ {A, B, C} ];

endmodule

module top_module (
    input clk,
    input enable,
    input S,
    input A,
    input B,
    input C,
    output reg Z
);

    reg [7:1] q; // Reduced the size of q, mistakenly making it 7 bits instead of 8
    always @(posedge clk) begin
        if (enable)
            q <= {q[6:1], S}; // Adjusted for the new size of q
    end

    assign Z = q[ {A, B, C} ]; // This will cause a compilation error due to mismatch in bit width

endmodule

module top_module (
    input clk,
    input enable,
    input S,
    input A,
    input B,
    input C,
    output reg Z
);

    reg [7:0] q;
    always @(posedge clk) begin
        if (enable)
            q <= {q[6:0], q[7]}; // Recirculating the MSB instead of shifting in S
    end

    assign Z = q[ {A, B, C} ];

endmodule


module top_module(
	input clk,
	input reset,
	output reg [3:0] q);

	always @(posedge clk)
		if (reset || q == 9) // Changed condition from q == 10 to q == 9
			q <= 1;
		else
			q <= q+1;

endmodule

module top_module(
	input clk,
	input reset,
	output reg [3:0] q);

	always @(posedge clk)
		if (reset || q == 10)
			q <= 2; // Changed reset value from 1 to 2
		else
			q <= q+1;

endmodule

module top_module(
	input clk,
	input reset,
	output reg [3:0] q);

	always @(posedge clk)
		if (reset || q == 10)
			q <= 1;
		else
			q <= q + 2; // Changed increment from q+1 to q+2
endmodule

module top_module(
	input clk,
	input reset,
	output reg [3:0] q);

	always @(posedge clk)
		if (reset)
			q <= 1; // Removed condition q == 10 for reset
		else
			q <= q+1;

endmodule

module top_module(
	input clk,
	input reset,
	output reg [3:0] q);

	always @(negedge clk) // Changed posedge to negedge
		if (reset || q == 10)
			q <= 1;
		else
			q <= q+1;

endmodule

module top_module(
	input clk,
	input reset,
	output reg [3:0] q);

	always @(posedge clk)
		if (reset)
			q <= 0; // Changed reset value from 1 to 0
		else
			q <= q+1;

endmodule

module top_module(
	input clk,
	input reset,
	output reg [3:0] q);

	always @(posedge clk)
		if (reset || q == 10)
			q <= 1;
		else
			q <= q - 1; // Changed increment to decrement (q-1)

endmodule

module top_module(
	input clk,
	input reset,
	output reg [2:0] q); // Changed bit width from [3:0] to [2:0]

	always @(posedge clk)
		if (reset || q == 10)
			q <= 1;
		else
			q <= q+1;

endmodule

module top_module(
	input clk,
	input reset,
	output reg [3:0] q);

	always @(posedge clk)
		if (!reset || q == 10) // Changed reset condition to !reset
			q <= 1;
		else
			q <= q+1;

endmodule

module top_module(
	input clk,
	input reset,
	output reg [3:0] q);

	always @(posedge clk)
		if (reset || q == 11) // Changed comparison from q == 10 to q == 11
			q <= 1;
		else
			q <= q+1;

endmodule


module top_module (
    input clk,
    input in,
    input reset,
    output out
);
    parameter A=0, B=1, C=2, D=3;
    reg [1:0] state;
    reg [1:0] next;

    always_comb begin
        case (state)
            A: next = in ? B : A; // No change
            B: next = in ? B : C; // No change
            C: next = in ? D : A; // No change
            // Mutation: Change next state for D when in=0 from C to B
            D: next = in ? B : B; // Changed here
        endcase
    end

    always @(posedge clk) begin
        if (reset) state <= A;
        else state <= next;
    end

    assign out = (state==D);

endmodule

module top_module (
    input clk,
    input in,
    input reset,
    output out
);
    parameter A=0, B=1, C=2, D=3;
    reg [1:0] state;
    reg [1:0] next;

    always_comb begin
        case (state)
            A: next = in ? B : A; // No change
            // Mutation: Change next state for B when in=0 from C to D
            B: next = in ? B : D; // Changed here
            C: next = in ? D : A; // No change
            D: next = in ? B : C; // No change
        endcase
    end

    always @(posedge clk) begin
        if (reset) state <= A;
        else state <= next;
    end

    assign out = (state==D);

endmodule

module top_module (
    input clk,
    input in,
    input reset,
    output out
);
    parameter A=0, B=1, C=2, D=3;
    reg [1:0] state;
    reg [1:0] next;

    always_comb begin
        // Mutation: Change next state for A when in=1 from B to C
        case (state)
            A: next = in ? C : A; // Changed here
            B: next = in ? B : C;
            C: next = in ? D : A;
            D: next = in ? B : C;
        endcase
    end

    always @(posedge clk) begin
        if (reset) state <= A;
        else state <= next;
    end

    assign out = (state==D);

endmodule

module top_module (
    input clk,
    input in,
    input reset,
    output out
);
    parameter A=0, B=1, C=2, D=3;
    reg [1:0] state;
    reg [1:0] next;

    always_comb begin
        case (state)
            A: next = in ? B : A;
            B: next = in ? B : C;
            C: next = in ? D : A;
            D: next = in ? B : C;
        endcase
    end

    always @(posedge clk) begin
        if (reset) state <= A;
        // Mutation: Change state assignment to non-blocking
        else state <= next; // No change (Clarification)
    end

    // Mutation: Change output to be high when in state C instead of D
    assign out = (state==C); // Changed here

endmodule

module top_module (
    input clk,
    input in,
    input reset,
    output out
);
    parameter A=0, B=1, C=2, D=3;
    reg [1:0] state;
    reg [1:0] next;

    always_comb begin
        case (state)
            A: next = in ? B : A;
            // Mutation: Change next state for B when in=1 from B to A
            B: next = in ? A : C; // Changed here
            C: next = in ? D : A;
            D: next = in ? B : C;
        endcase
    end

    always @(posedge clk) begin
        if (reset) state <= A;
        else state <= next;
    end

    assign out = (state==D);

endmodule

module top_module (
    input clk,
    input in,
    input reset,
    output out
);
    parameter A=0, B=1, C=2, D=3;
    reg [1:0] state;
    reg [1:0] next;

    always_comb begin
        case (state)
            A: next = in ? B : A;
            B: next = in ? B : C;
            C: next = in ? D : A;
            D: next = in ? B : C;
        endcase
    end

    always @(posedge clk) begin
        if (reset)
            // Mutation: Change reset state from A to B
            state <= B; // Changed here
        else state <= next;
    end

    assign out = (state==D);

endmodule

module top_module (
    input clk,
    input in,
    input reset,
    output out
);
    parameter A=0, B=1, C=2, D=3;
    reg [1:0] state;
    reg [1:0] next;

    always_comb begin
        case (state)
            A: next = in ? B : A;
            B: next = in ? B : C;
            // Mutation: Change next state for C when in=0 from A to B
            C: next = in ? D : B; // Changed here
            D: next = in ? B : C;
        endcase
    end

    always @(posedge clk) begin
        if (reset) state <= A;
        else state <= next;
    end

    assign out = (state==D);

endmodule

module top_module (
    input clk,
    input in,
    input reset,
    output out
);
    parameter A=0, B=1, C=2, D=3;
    reg [1:0] state;
    reg [1:0] next;

    always_comb begin
        case (state)
            // Mutation: Change next state for A when in=0 from A to B
            A: next = in ? B : B; // Changed here
            B: next = in ? B : C;
            C: next = in ? D : A;
            D: next = in ? B : C;
        endcase
    end

    always @(posedge clk) begin
        if (reset) state <= A;
        else state <= next;
    end

    assign out = (state==D);

endmodule

module top_module (
    input clk,
    input in,
    input reset,
    output out
);
    parameter A=0, B=1, C=2, D=3;
    reg [1:0] state;
    reg [1:0] next;

    always_comb begin
        case (state)
            A: next = in ? B : A;
            B: next = in ? B : C;
            C: next = in ? D : A;
            // Mutation: Change next state for D when in=1 from B to A
            D: next = in ? A : C; // Changed here
        endcase
    end

    always @(posedge clk) begin
        if (reset) state <= A;
        else state <= next;
    end

    assign out = (state==D);

endmodule

module top_module (
    input clk,
    input in,
    input reset,
    output out
);
    parameter A=0, B=1, C=2, D=3;
    reg [1:0] state;
    reg [1:0] next;

    always_comb begin
        case (state)
            A: next = in ? B : A;
            B: next = in ? B : C;
            // Mutation: Change next state for C when in=1 from D to B
            C: next = in ? B : A; // Changed here
            D: next = in ? B : C;
        endcase
    end

    always @(posedge clk) begin
        if (reset) state <= A;
        else state <= next;
    end

    assign out = (state==D);

endmodule


module top_module(
	input clk,
	input reset,
	output shift_ena);

	parameter B0=0, B1=1, B2=2, B3=3, Done=4;

	reg [2:0] state, next;

	always_comb begin
		case (state)
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = Done;
			Done: next = Done;
		endcase
	end

	always @(posedge clk)
		if (reset) state <= B1; // Changed B0 to B1 here
		else state <= next;

	assign shift_ena = (state == B0 || state == B1 || state == B2 || state == B3);

endmodule

module top_module(
	input clk,
	input reset,
	output shift_ena);

	parameter B0=0, B1=1, B2=2, B3=3, Done=4;

	reg [2:0] state, next;

	always_comb begin
		case (state)
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = B3; // Changed Done to B3 here
			Done: next = Done;
		endcase
	end

	always @(posedge clk)
		if (reset) state <= B0;
		else state <= next;

	assign shift_ena = (state == B0 || state == B1 || state == B2 || state == B3);

endmodule

module top_module(
	input clk,
	input reset,
	output shift_ena);

	parameter B0=0, B1=1, B2=2, B3=3, Done=4;

	reg [2:0] state, next;

	always_comb begin
		case (state)
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = Done;
			Done: next = B0; // Changed Done to loop back to B0
		endcase
	end

	always @(posedge clk)
		if (reset) state <= B0;
		else state <= next;

	assign shift_ena = (state == B0 || state == B1 || state == B2 || state == B3);

endmodule

module top_module(
	input clk,
	input reset,
	output shift_ena);

	parameter B0=0, B1=1, B2=2, B3=3, Done=4;

	reg [2:0] state, next;

	always_comb begin
		case (state)
			B0: next = B2; // Changed B0's next state to B2
			B1: next = B2;
			B2: next = B3;
			B3: next = Done;
			Done: next = Done;
		endcase
	end

	always @(posedge clk)
		if (reset) state <= B0;
		else state <= next;

	assign shift_ena = (state == B0 || state == B1 || state == B2 || state == B3);

endmodule

module top_module(
	input clk,
	input reset,
	output shift_ena);

	parameter B0=0, B1=1, B2=2, B3=3, Done=4;

	reg [2:0] state, next;

	always_comb begin
		case (state)
			B0: next = B1;
			B1: next = B2;
			B2: next = B2; // Changed B2's next state to loop on itself
			B3: next = Done;
			Done: next = Done;
		endcase
	end

	always @(posedge clk)
		if (reset) state <= B0;
		else state <= next;

	assign shift_ena = (state == B0 || state == B1 || state == B2 || state == B3);

endmodule

module top_module(
	input clk,
	input reset,
	output shift_ena);

	parameter B0=0, B1=1, B2=2, B3=3, Done=4;

	reg [2:0] state, next;

	always_comb begin
		case (state)
			B0: next = B1;
			B1: next = B3; // Changed B1's next state to B3
			B2: next = B3;
			B3: next = Done;
			Done: next = Done;
		endcase
	end

	always @(posedge clk)
		if (reset) state <= B0;
		else state <= next;

	assign shift_ena = (state == B0 || state == B1 || state == B2 || state == B3);

endmodule

module top_module(
	input clk,
	input reset,
	output shift_ena);

	parameter B0=0, B1=1, B2=2, B3=3, Done=4;

	reg [2:0] state, next;

	always_comb begin
		case (state)
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = Done;
			// Removed Done case entirely, implicitly latches
		endcase
	end

	always @(posedge clk)
		if (reset) state <= B0;
		else state <= next;

	assign shift_ena = (state == B0 || state == B1 || state == B2 || state == B3);

endmodule

module top_module(
	input clk,
	input reset,
	output shift_ena);

	parameter B0=0, B1=1, B2=2, B3=4, Done=4; // Changed parameter B3 to 4

	reg [2:0] state, next;

	always_comb begin
		case (state)
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = Done;
			Done: next = Done;
		endcase
	end

	always @(posedge clk)
		if (reset) state <= B0;
		else state <= next;

	assign shift_ena = (state == B0 || state == B1 || state == B2 || state == B3);

endmodule

module top_module(
	input clk,
	input reset,
	output shift_ena);

	parameter B0=0, B1=1, B2=2, B3=3, Done=4;

	reg [2:0] state, next;

	always_comb begin
		case (state)
			B0: next = B0; // Changed B0's next state to loop on itself
			B1: next = B2;
			B2: next = B3;
			B3: next = Done;
			Done: next = Done;
		endcase
	end

	always @(posedge clk)
		if (reset) state <= B0;
		else state <= next;

	assign shift_ena = (state == B0 || state == B1 || state == B2 || state == B3);

endmodule

module top_module(
	input clk,
	input reset,
	output shift_ena);

	parameter B0=0, B1=1, B2=2, B3=3, Done=3; // Changed Done parameter to 3, making it equivalent to B3

	reg [2:0] state, next;

	always_comb begin
		case (state)
			B0: next = B1;
			B1: next = B2;
			B2: next = B3;
			B3: next = Done;
			Done: next = Done;
		endcase
	end

	always @(posedge clk)
		if (reset) state <= B0;
		else state <= next;

	assign shift_ena = (state == B0 || state == B1 || state == B2 || state == B3);

endmodule


module top_module (
	input clk,
	input in,
	output logic out
);

	initial
		out = 1; // Changed initial value of out from 0 to 1

	always@(posedge clk) begin
		out <= in ^ out;
	end

endmodule

module top_module (
	input clk,
	input in,
	output logic out
);

	initial
		out = 0;

	always@(posedge clk) begin
		out <= in ^ !out; // Complemented the output in the XOR operation
	end

endmodule

module top_module (
	input clk,
	input in,
	output logic out
);

	initial
		out = 0;

	always@(negedge clk) begin // Changed posedge to negedge
		out <= in ^ out;
	end

endmodule

module top_module (
	input clk,
	input in,
	output logic out
);

	// Removed the initial block entirely
	always@(posedge clk) begin
		out <= in ^ out;
	end

endmodule

module top_module (
	input clk,
	input in,
	output logic out
);

	initial
		out = 0;

	always@(posedge clk) begin
		out <= in & out; // Changed XOR (^) to AND (&)
	end

endmodule

module top_module (
	input clk,
	input in,
	output logic out
);

	initial
		out = 0;

	always@(posedge clk) begin
		out <= ~(in ^ out); // Negated the result of XOR
	end

endmodule

module top_module (
	input clk,
	input in,
	output logic out
);

	initial
		out = 0;

	always@(posedge clk) begin
		out <= in; // Removed XOR with out
	end

endmodule

module top_module (
	input clk,
	input in,
	output logic out
);

	initial
		out = 0;

	always@(posedge clk) begin
		out <= in ^ 1'b1; // XOR with constant 1
	end

endmodule

module top_module (
	input clk,
	input in,
	output logic out
);

	initial
		out = 0;

	always@(posedge clk) begin
		out <= {1'b0, in} ^ out; // Added 1'b0 to 'in' before XOR, this won't compile as intended and is considered a logic error due to width mismatch
	end

endmodule

module top_module (
	input clk,
	input in,
	output logic out
);

	initial
		out = 0;

	always@(posedge clk) begin
		out[0] <= in ^ out; // Attempt to assign to a bit slice of 'out', this is a logic error since 'out' is a single bit
	end

endmodule