qwen3-coder:30b | RAG on

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    reg [7:0] product_reg0;
    reg [7:0] product_reg1;
    reg [7:0] product_reg2;
    reg [7:0] product_reg3;
    reg [7:0] product_reg4;
    
    wire [7:0] partial_product [0:size-1];
    wire [7:0] sum1, sum2, sum3;
    
    // Generate partial products
    genvar i;
    for (i = 0; i < size; i = i + 1) begin : gen_partial_products
        assign partial_product[i] = (mul_b[i] == 1'b1) ? (mul_a << i) : 8'd0;
    end
    
    // First level of addition
    assign sum1 = partial_product[0] + partial_product[1];
    assign sum2 = partial_product[2] + partial_product[3];
    
    // Second level of addition
    assign sum3 = sum1 + sum2;
...

[stdout]
===========Test completed with         101 / 100 failures===========
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_14/tb.v:55: $finish called at 3010 (1ns)

[error]
OpenLane failed: 2

[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    reg [7:0] product_reg0;
    reg [7:0] product_reg1;
    reg [7:0] product_reg2;
    reg [7:0] product_reg3;
    reg [7:0] product_reg4;
    
    wire [7:0] partial_product [0:size-1];
    wire [7:0] sum0, sum1, sum2, sum3;
    
    // Extend inputs
    wire [7:0] a_extended = {mul_a, 4'b0000};
    wire [7:0] b_extended = {mul_b, 4'b0000};
    
    // Generate partial products
    genvar i;
    for (i = 0; i < size; i = i + 1) begin : gen_partial_products
        assign partial_product[i] = (b_extended[i] == 1'b1) ? (a_extended << i) : 8'd0;
    end
    
    // First level addition
    assign sum0 = partial_product[0] + partial_product[1];
    assign sum1 = partial_product[2] + partial_product[3];
...

[stdout]
===========Test completed with         100 / 100 failures===========
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_14/tb.v:55: $finish called at 3010 (1ns)

[error]
OpenLane failed: 2

[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    reg [7:0] sum_reg0;
    reg [7:0] sum_reg1;
    reg [7:0] product_reg;
    
    wire [7:0] partial_product [0:size-1];
    
    // Generate partial products
    genvar i;
    for (i = 0; i < size; i = i + 1) begin : gen_partial_products
        assign partial_product[i] = (mul_b[i] == 1'b1) ? {mul_a << i, {i{1'b0}}} : 8'd0;
    end
    
    always @(posedge clk or negedge rst_n) begin
        if (!rst_n) begin
            sum_reg0 <= 8'd0;
            sum_reg1 <= 8'd0;
            product_reg <= 8'd0;
        end else begin
            // First level of addition
            sum_reg0 <= partial_product[0] + partial_product[1] + partial_product[2] + partial_product[3];
            // Second level of addition
            sum_reg1 <= sum_reg0;
...

[stdout]
===========Test completed with          92 / 100 failures===========
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_14/tb.v:55: $finish called at 3010 (1ns)

[error]
OpenLane failed: 2

[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    reg [7:0] product_reg;
    reg [7:0] sum_reg0, sum_reg1, sum_reg2;
    reg [3:0] a_ext;
    reg [7:0] b_ext;
    
    // Extend inputs
    assign a_ext = {4{1'b0}} | mul_a;
    assign b_ext = {4{1'b0}} | mul_b;
    
    always @(posedge clk or negedge rst_n) begin
        if (!rst_n) begin
            product_reg <= 8'b0;
            sum_reg0 <= 8'b0;
            sum_reg1 <= 8'b0;
            sum_reg2 <= 8'b0;
        end else begin
            // First level partial products
            sum_reg0 <= (b_ext[0] ? a_ext : 8'b0) +
                        (b_ext[1] ? {a_ext[2:0], 1'b0} : 8'b0) +
                        (b_ext[2] ? {a_ext[3:0], 2'b0} : 8'b0) +
                        (b_ext[3] ? {a_ext[3:0], 3'b0} : 8'b0);
...

[stdout]
===========Test completed with         100 / 100 failures===========
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_14/tb.v:55: $finish called at 3010 (1ns)

[error]
OpenLane failed: 2

[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    reg [7:0] product_reg;
    reg [7:0] sum_reg0, sum_reg1, sum_reg2;
    reg [7:0] partial_product;
    reg [3:0] multiplicand_ext;
    reg [3:0] multiplier_ext;
    
    integer i;
    
    // Extend inputs
    assign multiplicand_ext = {4{1'b0}} | mul_a;
    assign multiplier_ext = {4{1'b0}} | mul_b;
    
    always @(posedge clk or negedge rst_n) begin
        if (!rst_n) begin
            product_reg <= 8'b0;
            sum_reg0 <= 8'b0;
            sum_reg1 <= 8'b0;
            sum_reg2 <= 8'b0;
        end else begin
            // First level of registers for partial products
            for (i = 0; i < size; i = i + 1) begin
                if (multiplier_ext[i] == 1'b1) begin
...

[stdout]
===========Test completed with           x / 100 failures===========
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_14/tb.v:55: $finish called at 3010 (1ns)

[error]
OpenLane failed: 2

[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    // Extended input signals
    wire [7:0] a_ext = {mul_a, 4'b0000};
    wire [7:0] b_ext = {mul_b, 4'b0000};
    
    // Partial products
    wire [7:0] pp0 = b_ext[0] ? a_ext : 8'b00000000;
    wire [7:0] pp1 = b_ext[1] ? (a_ext << 1) : 8'b00000000;
    wire [7:0] pp2 = b_ext[2] ? (a_ext << 2) : 8'b00000000;
    wire [7:0] pp3 = b_ext[3] ? (a_ext << 3) : 8'b00000000;
    
    // Intermediate sum registers
    reg [7:0] sum0;
    reg [7:0] sum1;
    reg [7:0] sum2;
    reg [7:0] sum3;
    
    // Final product register
    reg [7:0] product;
    
    always @(posedge clk or negedge rst_n) begin
        if (!rst_n) begin
            sum0 <= 8'b00000000;
...

[stdout]
===========Test completed with         100 / 100 failures===========
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_14/tb.v:55: $finish called at 3010 (1ns)

[error]
OpenLane failed: 2

[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    // Extended input signals
    wire [7:0] ext_a;
    wire [7:0] ext_b;
    
    // Partial products
    wire [7:0] pp0, pp1, pp2, pp3;
    
    // Intermediate sums
    reg [7:0] sum0, sum1, sum2;
    reg [7:0] product;
    
    // Extend inputs
    assign ext_a = {4'b0000, mul_a};
    assign ext_b = {4'b0000, mul_b};
    
    // Generate partial products
    assign pp0 = (ext_b[0]) ? ext_a : 8'd0;
    assign pp1 = (ext_b[1]) ? (ext_a << 1) : 8'd0;
    assign pp2 = (ext_b[2]) ? (ext_a << 2) : 8'd0;
    assign pp3 = (ext_b[3]) ? (ext_a << 3) : 8'd0;
    
    always @(posedge clk or negedge rst_n) begin
...

[stdout]
===========Test completed with          96 / 100 failures===========
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_14/tb.v:55: $finish called at 3010 (1ns)

[error]
OpenLane failed: 2

[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    reg [7:0] product_reg0;
    reg [7:0] product_reg1;
    reg [7:0] product_reg2;
    reg [7:0] product_reg3;
    reg [7:0] product_reg4;
    
    wire [7:0] partial_product [0:size-1];
    wire [7:0] sum0, sum1, sum2, sum3;
    
    // Generate partial products
    genvar i;
    for (i = 0; i < size; i = i + 1) begin : gen_partial_products
        assign partial_product[i] = (mul_b[i] == 1'b1) ? (mul_a << i) : 8'd0;
    end
    
    // First level of addition
    assign sum0 = partial_product[0] + partial_product[1];
    assign sum1 = partial_product[2] + partial_product[3];
    
    // Second level of addition
    assign sum2 = sum0 + sum1;
...

[stdout]
===========Test completed with         101 / 100 failures===========
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_14/tb.v:55: $finish called at 3010 (1ns)

[error]
OpenLane failed: 2

[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    // Extended input signals
    wire [7:0] a_ext = {mul_a, 4'b0000};
    wire [7:0] b_ext = {mul_b, 4'b0000};
    
    // Partial products
    wire [7:0] pp0 = b_ext[0] ? a_ext : 8'b00000000;
    wire [7:0] pp1 = b_ext[1] ? (a_ext << 1) : 8'b00000000;
    wire [7:0] pp2 = b_ext[2] ? (a_ext << 2) : 8'b00000000;
    wire [7:0] pp3 = b_ext[3] ? (a_ext << 3) : 8'b00000000;
    
    // Intermediate sums
    reg [7:0] sum0;
    reg [7:0] sum1;
    reg [7:0] sum2;
    reg [7:0] sum3;
    
    // Final product
    reg [7:0] product;
    
    always @(posedge clk or negedge rst_n) begin
        if (!rst_n) begin
            sum0 <= 8'b00000000;
...

[stdout]
===========Test completed with         100 / 100 failures===========
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_14/tb.v:55: $finish called at 3010 (1ns)

[error]
OpenLane failed: 2

[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    // Extended input signals
    wire [7:0] ext_a;
    wire [7:0] ext_b;
    
    // Partial products
    wire [7:0] pp0, pp1, pp2, pp3;
    
    // Intermediate sums
    reg [7:0] sum0, sum1, sum2;
    reg [7:0] product;
    
    // Extend inputs
    assign ext_a = {4'b0000, mul_a};
    assign ext_b = {4'b0000, mul_b};
    
    // Generate partial products
    assign pp0 = (ext_b[0] == 1'b1) ? ext_a : 8'd0;
    assign pp1 = (ext_b[1] == 1'b1) ? (ext_a << 1) : 8'd0;
    assign pp2 = (ext_b[2] == 1'b1) ? (ext_a << 2) : 8'd0;
    assign pp3 = (ext_b[3] == 1'b1) ? (ext_a << 3) : 8'd0;
    
    // Pipeline stages
...

[stdout]
===========Test completed with          96 / 100 failures===========
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_14/tb.v:55: $finish called at 3010 (1ns)

[error]
OpenLane failed: 2

[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    reg [7:0] product_reg;
    reg [7:0] sum_reg0, sum_reg1, sum_reg2;
    reg [7:0] partial_product;
    reg [3:0] multiplicand_ext;
    reg [3:0] multiplier_ext;
    
    integer i;
    
    // Extend inputs
    assign multiplicand_ext = {4{1'b0}} | mul_a;
    assign multiplier_ext = {4{1'b0}} | mul_b;
    
    always @(posedge clk or negedge rst_n) begin
        if (!rst_n) begin
            product_reg <= 8'b0;
            sum_reg0 <= 8'b0;
            sum_reg1 <= 8'b0;
            sum_reg2 <= 8'b0;
        end else begin
            // First level of partial products
            partial_product <= 8'b0;
            for (i = 0; i < size; i = i + 1) begin
...

[stderr]
/data/eval/out/run_20260424_203453_201510_6e98ce/tmp/qwen3_coder_30b/13_rtllm_arithmetic__task_14/sample_4/generated.v:34: syntax error
/data/eval/out/run_20260424_203453_201510_6e98ce/tmp/qwen3_coder_30b/13_rtllm_arithmetic__task_14/sample_4/generated.v:34: error: Malformed statement

[stderr]
/data/eval/out/run_20260424_203453_201510_6e98ce/tmp/qwen3_coder_30b/13_rtllm_arithmetic__task_14/sample_4/functional/generated.v:34: syntax error
/data/eval/out/run_20260424_203453_201510_6e98ce/tmp/qwen3_coder_30b/13_rtllm_arithmetic__task_14/sample_4/functional/generated.v:34: error: Malformed statement

[error]
None

[
  {
    "stage": "syntax",
    "code": "syntax.iverilog_failed",
    "message": "/data/eval/out/run_20260424_203453_201510_6e98ce/tmp/qwen3_coder_30b/13_rtllm_arithmetic__task_14/sample_4/generated.v:34: syntax error\n/data/eval/out/run_20260424_203453_201510_6e98ce/tmp/qwen3_coder_30b/13_rtllm_arithmetic__task_14/sample_4/generated.v:34: error: Malformed statement\n",
    "retryable": false,
    "details": {}
  },
  {
    "stage": "functional",
    "code": "functional.testbench_failed",
    "message": "/data/eval/out/run_20260424_203453_201510_6e98ce/tmp/qwen3_coder_30b/13_rtllm_arithmetic__task_14/sample_4/functional/generated.v:34: syntax error\n/data/eval/out/run_20260424_203453_201510_6e98ce/tmp/qwen3_coder_30b/13_rtllm_arithmetic__task_14/sample_4/functional/generated.v:34: error: Malformed statement\n",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": false,
  "functional_ok": false,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    reg [7:0] product_reg0;
    reg [7:0] product_reg1;
    reg [7:0] product_reg2;
    reg [7:0] product_reg3;
    reg [7:0] product_reg4;
    
    wire [7:0] partial_product [0:size-1];
    wire [7:0] sum1, sum2, sum3;
    
    // Generate partial products
    genvar i;
    for (i = 0; i < size; i = i + 1) begin : gen_partial_products
        assign partial_product[i] = (mul_b[i] == 1'b1) ? 
            {mul_a, {i{1'b0}}} : 
            8'b0;
    end
    
    // First level of addition
    assign sum1 = partial_product[0] + partial_product[1];
    assign sum2 = partial_product[2] + partial_product[3];
    
    // Second level of addition
...

[stdout]
===========Test completed with         101 / 100 failures===========
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_14/tb.v:55: $finish called at 3010 (1ns)

[error]
OpenLane failed: 2

[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    // Extended input signals
    wire [7:0] a_ext;
    wire [7:0] b_ext;
    
    // Partial products
    wire [7:0] pp0, pp1, pp2, pp3;
    
    // Intermediate sums
    reg [7:0] sum0, sum1, sum2;
    reg [7:0] product;
    
    // Extend inputs
    assign a_ext = {4'b0000, mul_a};
    assign b_ext = {4'b0000, mul_b};
    
    // Generate partial products
    assign pp0 = (b_ext[0]) ? a_ext : 8'b00000000;
    assign pp1 = (b_ext[1]) ? (a_ext << 1) : 8'b00000000;
    assign pp2 = (b_ext[2]) ? (a_ext << 2) : 8'b00000000;
    assign pp3 = (b_ext[3]) ? (a_ext << 3) : 8'b00000000;
    
    // Add partial products
...

[stdout]
===========Test completed with          96 / 100 failures===========
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_14/tb.v:55: $finish called at 3010 (1ns)

[error]
OpenLane failed: 2

[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    reg [7:0] product_reg;
    reg [7:0] sum_reg0, sum_reg1, sum_reg2;
    reg [7:0] partial_product;
    reg [3:0] multiplicand_ext;
    reg [3:0] multiplier_ext;
    
    integer i;
    
    // Extend inputs
    assign multiplicand_ext = {4{1'b0}} | mul_a;
    assign multiplier_ext = {4{1'b0}} | mul_b;
    
    always @(posedge clk or negedge rst_n) begin
        if (!rst_n) begin
            product_reg <= 8'b0;
            sum_reg0 <= 8'b0;
            sum_reg1 <= 8'b0;
            sum_reg2 <= 8'b0;
        end else begin
            // First level of partial products
            for (i = 0; i < size; i = i + 1) begin
                if (multiplier_ext[i] == 1'b1) begin
...

[stdout]
===========Test completed with           x / 100 failures===========
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_14/tb.v:55: $finish called at 3010 (1ns)

[error]
OpenLane failed: 2

[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    // Extended input signals
    wire [7:0] a_ext = {mul_a, 4'b0000};
    wire [7:0] b_ext = {mul_b, 4'b0000};
    
    // Partial products
    wire [7:0] pp0 = b_ext[0] ? a_ext : 8'b00000000;
    wire [7:0] pp1 = b_ext[1] ? (a_ext << 1) : 8'b00000000;
    wire [7:0] pp2 = b_ext[2] ? (a_ext << 2) : 8'b00000000;
    wire [7:0] pp3 = b_ext[3] ? (a_ext << 3) : 8'b00000000;
    
    // Intermediate sums
    reg [7:0] sum0;
    reg [7:0] sum1;
    reg [7:0] sum2;
    reg [7:0] sum3;
    
    // Final product
    reg [7:0] product;
    
    always @(posedge clk or negedge rst_n) begin
        if (!rst_n) begin
            sum0 <= 8'b00000000;
...

[stdout]
===========Test completed with         100 / 100 failures===========
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_14/tb.v:55: $finish called at 3010 (1ns)

[error]
OpenLane failed: 2

[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    // Extended input signals
    wire [7:0] a_ext;
    wire [7:0] b_ext;
    
    // Partial products
    wire [7:0] pp0, pp1, pp2, pp3;
    
    // Intermediate sums
    reg [7:0] sum0, sum1, sum2;
    
    // Extended inputs
    assign a_ext = {mul_a, 4'b0000};
    assign b_ext = {mul_b, 4'b0000};
    
    // Partial product generation
    assign pp0 = (b_ext[0]) ? a_ext : 8'b00000000;
    assign pp1 = (b_ext[1]) ? (a_ext << 1) : 8'b00000000;
    assign pp2 = (b_ext[2]) ? (a_ext << 2) : 8'b00000000;
    assign pp3 = (b_ext[3]) ? (a_ext << 3) : 8'b00000000;
    
    // Add partial products
    always @(posedge clk or negedge rst_n) begin
...

[stderr]
/data/eval/out/run_20260426_141859_833435_7c9834/tmp/qwen_coder_30/rtllm__13_rtllm_arithmetic__task_14/sample_5/generated.v:47: error: mul_out is not a valid l-value in multi_pipe_4bit.
/data/eval/out/run_20260426_141859_833435_7c9834/tmp/qwen_coder_30/rtllm__13_rtllm_arithmetic__task_14/sample_5/generated.v:6:      : mul_out is declared here as wire.
/data/eval/out/run_20260426_141859_833435_7c9834/tmp/qwen_coder_30/rtllm__13_rtllm_arithmetic__task_14/sample_5/generated.v:49: error: mul_out is not a valid l-value in multi_pipe_4bit.
/data/eval/out/run_20260426_141859_833435_7c9834/tmp/qwen_coder_30/rtllm__13_rtllm_arithmetic__task_14/sample_5/generated.v:6:      : mul_out is declared here as wire.
2 error(s) during elaboration.

[stderr]
/data/eval/out/run_20260426_141859_833435_7c9834/tmp/qwen_coder_30/rtllm__13_rtllm_arithmetic__task_14/sample_5/functional/generated.v:47: error: mul_out is not a valid l-value in multi_pipe_tb.dut.
/data/eval/out/run_20260426_141859_833435_7c9834/tmp/qwen_coder_30/rtllm__13_rtllm_arithmetic__task_14/sample_5/functional/generated.v:6:      : mul_out is declared here as wire.
/data/eval/out/run_20260426_141859_833435_7c9834/tmp/qwen_coder_30/rtllm__13_rtllm_arithmetic__task_14/sample_5/functional/generated.v:49: error: mul_out is not a valid l-value in multi_pipe_tb.dut.
/data/eval/out/run_20260426_141859_833435_7c9834/tmp/qwen_coder_30/rtllm__13_rtllm_arithmetic__task_14/sample_5/functional/generated.v:6:      : mul_out is declared here as wire.
2 error(s) during elaboration.

[error]
None

[
  {
    "stage": "syntax",
    "code": "syntax.iverilog_failed",
    "message": "/data/eval/out/run_20260426_141859_833435_7c9834/tmp/qwen_coder_30/rtllm__13_rtllm_arithmetic__task_14/sample_5/generated.v:47: error: mul_out is not a valid l-value in multi_pipe_4bit.\n/data/eval/out/run_20260426_141859_833435_7c9834/tmp/qwen_coder_30/rtllm__13_rtllm_arithmetic__task_14/sample_5/generated.v:6:      : mul_out is declared here as wire.\n/data/eval/out/run_20260426_141859_833435_7c9834/tmp/qwen_coder_30/rtllm__13_rtllm_arithmetic__task_14/sample_5/generated.v:49: error: mul_out is not a valid l-value in multi_pipe_4bit.\n/data/eval/out/run_20260426_141859_833435_7c9834/tmp/qwen_coder_30/rtllm__13_rtllm_arithmetic__task_14/sample_5/generated.v:6:      : mul_out is declared here as wire.\n2 error(s) during elaboration.\n",
    "retryable": false,
    "details": {}
  },
  {
    "stage": "functional",
    "code": "functional.testbench_failed",
    "message": "/data/eval/out/run_20260426_141859_833435_7c9834/tmp/qwen_coder_30/rtllm__13_rtllm_arithmetic__task_14/sample_5/functional/generated.v:47: error: mul_out is not a valid l-value in multi_pipe_tb.dut.\n/data/eval/out/run_20260426_141859_833435_7c9834/tmp/qwen_coder_30/rtllm__13_rtllm_arithmetic__task_14/sample_5/functional/generated.v:6:      : mul_out is declared here as wire.\n/data/eval/out/run_20260426_141859_833435_7c9834/tmp/qwen_coder_30/rtllm__13_rtllm_arithmetic__task_14/sample_5/functional/generated.v:49: error: mul_out is not a valid l-value in multi_pipe_tb.dut.\n/data/eval/out/run_20260426_141859_833435_7c9834/tmp/qwen_coder_30/rtllm__13_rtllm_arithmetic__task_14/sample_5/functional/generated.v:6:      : mul_out is declared here as wire.\n2 error(s) during elaboration.\n",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": false,
  "functional_ok": false,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    reg [7:0] product_reg;
    reg [7:0] sum_reg0, sum_reg1, sum_reg2;
    reg [7:0] partial_product;
    reg [3:0] multiplicand_ext;
    reg [3:0] multiplier_ext;
    
    integer i;
    
    // Extend inputs
    assign multiplicand_ext = {4{1'b0}} | mul_a;
    assign multiplier_ext = {4{1'b0}} | mul_b;
    
    always @(posedge clk or negedge rst_n) begin
        if (!rst_n) begin
            product_reg <= 8'b0;
            sum_reg0 <= 8'b0;
            sum_reg1 <= 8'b0;
            sum_reg2 <= 8'b0;
        end else begin
            // First level of registers for partial products
            for (i = 0; i < size; i = i + 1) begin
                if (multiplier_ext[i] == 1'b1) begin
...

[stdout]
===========Test completed with           x / 100 failures===========
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_14/tb.v:55: $finish called at 3010 (1ns)

[error]
OpenLane failed: 2

[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    reg [7:0] product_reg0;
    reg [7:0] product_reg1;
    reg [7:0] product_reg2;
    reg [7:0] product_reg3;
    reg [7:0] product_reg4;
    
    wire [7:0] partial_product [0:size-1];
    wire [7:0] sum1;
    wire [7:0] sum2;
    wire [7:0] sum3;
    wire [7:0] sum4;
    
    // Generate partial products
    genvar i;
    for (i = 0; i < size; i = i + 1) begin : gen_partial_products
        assign partial_product[i] = (mul_b[i] == 1'b1) ? (mul_a << i) : 8'd0;
    end
    
    // First level of addition
    assign sum1 = partial_product[0] + partial_product[1];
    assign sum2 = partial_product[2] + partial_product[3];
...

[stdout]
===========Test completed with         101 / 100 failures===========
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_14/tb.v:55: $finish called at 3010 (1ns)

[error]
OpenLane failed: 2

[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    // Extended input signals
    wire [7:0] a_ext;
    wire [7:0] b_ext;
    
    // Partial products
    wire [7:0] pp0, pp1, pp2, pp3;
    
    // Intermediate sums
    reg [7:0] sum0, sum1, sum2;
    reg [7:0] product;
    
    // Extend inputs
    assign a_ext = {4'b0000, mul_a};
    assign b_ext = {4'b0000, mul_b};
    
    // Generate partial products
    assign pp0 = (b_ext[0]) ? a_ext : 8'b00000000;
    assign pp1 = (b_ext[1]) ? (a_ext << 1) : 8'b00000000;
    assign pp2 = (b_ext[2]) ? (a_ext << 2) : 8'b00000000;
    assign pp3 = (b_ext[3]) ? (a_ext << 3) : 8'b00000000;
    
    // First level of addition
...

[stdout]
===========Test completed with          96 / 100 failures===========
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_14/tb.v:55: $finish called at 3010 (1ns)

[error]
OpenLane failed: 2

[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    reg [7:0] product_reg;
    reg [7:0] sum_reg0;
    reg [7:0] sum_reg1;
    reg [7:0] sum_reg2;
    reg [7:0] sum_reg3;
    
    wire [7:0] partial_product0;
    wire [7:0] partial_product1;
    wire [7:0] partial_product2;
    wire [7:0] partial_product3;
    
    wire [7:0] sum0;
    wire [7:0] sum1;
    wire [7:0] sum2;
    wire [7:0] sum3;
    
    // Extend inputs
    wire [7:0] a_extended = {mul_a, 4'b0000};
    wire [7:0] b_extended = {mul_b, 4'b0000};
    
    // Generate partial products
    assign partial_product0 = (b_extended[0]) ? a_extended : 8'b00000000;
...

[stdout]
===========Test completed with         100 / 100 failures===========
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_14/tb.v:55: $finish called at 3010 (1ns)

[error]
OpenLane failed: 2

[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    // Extended input signals
    wire [7:0] a_ext = {mul_a, 4'b0000};
    wire [7:0] b_ext = {mul_b, 4'b0000};
    
    // Partial products
    wire [7:0] pp0 = b_ext[0] ? a_ext : 8'b00000000;
    wire [7:0] pp1 = b_ext[1] ? (a_ext << 1) : 8'b00000000;
    wire [7:0] pp2 = b_ext[2] ? (a_ext << 2) : 8'b00000000;
    wire [7:0] pp3 = b_ext[3] ? (a_ext << 3) : 8'b00000000;
    
    // Intermediate sums
    reg [7:0] sum0;
    reg [7:0] sum1;
    reg [7:0] sum2;
    reg [7:0] sum3;
    
    // Final product
    reg [7:0] product;
    
    always @(posedge clk or negedge rst_n) begin
        if (!rst_n) begin
            sum0 <= 8'b00000000;
...

[stdout]
===========Test completed with         100 / 100 failures===========
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_14/tb.v:55: $finish called at 3010 (1ns)

[error]
OpenLane failed: 2

[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    // Extended input signals
    wire [7:0] ext_a;
    wire [7:0] ext_b;
    
    // Partial products
    wire [7:0] pp0, pp1, pp2, pp3;
    
    // Intermediate sums
    reg [7:0] sum0, sum1, sum2;
    reg [7:0] product;
    
    // Extend inputs
    assign ext_a = {4'b0000, mul_a};
    assign ext_b = {4'b0000, mul_b};
    
    // Generate partial products
    assign pp0 = (ext_b[0]) ? ext_a : 8'd0;
    assign pp1 = (ext_b[1]) ? (ext_a << 1) : 8'd0;
    assign pp2 = (ext_b[2]) ? (ext_a << 2) : 8'd0;
    assign pp3 = (ext_b[3]) ? (ext_a << 3) : 8'd0;
    
    always @(posedge clk or negedge rst_n) begin
...

[stdout]
===========Test completed with          96 / 100 failures===========
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_14/tb.v:55: $finish called at 3010 (1ns)

[error]
OpenLane failed: 2

[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    reg [7:0] product_reg0;
    reg [7:0] product_reg1;
    reg [7:0] product_reg2;
    reg [7:0] product_reg3;
    reg [7:0] product_reg4;
    
    wire [7:0] partial_product [0:size-1];
    wire [7:0] sum1, sum2, sum3;
    
    // Generate partial products
    genvar i;
    for (i = 0; i < size; i = i + 1) begin : gen_partial_products
        assign partial_product[i] = (mul_b[i] == 1'b1) ? (mul_a << i) : 8'd0;
    end
    
    // First level of addition
    assign sum1 = product_reg0 + partial_product[0];
    assign sum2 = product_reg1 + partial_product[1];
    assign sum3 = product_reg2 + partial_product[2];
    
    // Second level of addition
    assign product_reg3 = sum1 + partial_product[3];
...

[stderr]
/data/eval/out/run_20260424_203453_201510_6e98ce/tmp/qwen3_coder_30b/13_rtllm_arithmetic__task_14/sample_8/generated.v:44: error: product_reg3 Unable to assign to unresolved wires.
/data/eval/out/run_20260424_203453_201510_6e98ce/tmp/qwen3_coder_30b/13_rtllm_arithmetic__task_14/sample_8/generated.v:45: error: product_reg4 Unable to assign to unresolved wires.
/data/eval/out/run_20260424_203453_201510_6e98ce/tmp/qwen3_coder_30b/13_rtllm_arithmetic__task_14/sample_8/generated.v:50: error: product_reg3 Unable to assign to unresolved wires.
/data/eval/out/run_20260424_203453_201510_6e98ce/tmp/qwen3_coder_30b/13_rtllm_arithmetic__task_14/sample_8/generated.v:51: error: product_reg4 Unable to assign to unresolved wires.
4 error(s) during elaboration.

[stderr]
/data/eval/out/run_20260424_203453_201510_6e98ce/tmp/qwen3_coder_30b/13_rtllm_arithmetic__task_14/sample_8/functional/generated.v:44: error: product_reg3 Unable to assign to unresolved wires.
/data/eval/out/run_20260424_203453_201510_6e98ce/tmp/qwen3_coder_30b/13_rtllm_arithmetic__task_14/sample_8/functional/generated.v:45: error: product_reg4 Unable to assign to unresolved wires.
/data/eval/out/run_20260424_203453_201510_6e98ce/tmp/qwen3_coder_30b/13_rtllm_arithmetic__task_14/sample_8/functional/generated.v:50: error: product_reg3 Unable to assign to unresolved wires.
/data/eval/out/run_20260424_203453_201510_6e98ce/tmp/qwen3_coder_30b/13_rtllm_arithmetic__task_14/sample_8/functional/generated.v:51: error: product_reg4 Unable to assign to unresolved wires.
4 error(s) during elaboration.

[error]
None

[
  {
    "stage": "syntax",
    "code": "syntax.iverilog_failed",
    "message": "/data/eval/out/run_20260424_203453_201510_6e98ce/tmp/qwen3_coder_30b/13_rtllm_arithmetic__task_14/sample_8/generated.v:44: error: product_reg3 Unable to assign to unresolved wires.\n/data/eval/out/run_20260424_203453_201510_6e98ce/tmp/qwen3_coder_30b/13_rtllm_arithmetic__task_14/sample_8/generated.v:45: error: product_reg4 Unable to assign to unresolved wires.\n/data/eval/out/run_20260424_203453_201510_6e98ce/tmp/qwen3_coder_30b/13_rtllm_arithmetic__task_14/sample_8/generated.v:50: error: product_reg3 Unable to assign to unresolved wires.\n/data/eval/out/run_20260424_203453_201510_6e98ce/tmp/qwen3_coder_30b/13_rtllm_arithmetic__task_14/sample_8/generated.v:51: error: product_reg4 Unable to assign to unresolved wires.\n4 error(s) during elaboration.\n",
    "retryable": false,
    "details": {}
  },
  {
    "stage": "functional",
    "code": "functional.testbench_failed",
    "message": "/data/eval/out/run_20260424_203453_201510_6e98ce/tmp/qwen3_coder_30b/13_rtllm_arithmetic__task_14/sample_8/functional/generated.v:44: error: product_reg3 Unable to assign to unresolved wires.\n/data/eval/out/run_20260424_203453_201510_6e98ce/tmp/qwen3_coder_30b/13_rtllm_arithmetic__task_14/sample_8/functional/generated.v:45: error: product_reg4 Unable to assign to unresolved wires.\n/data/eval/out/run_20260424_203453_201510_6e98ce/tmp/qwen3_coder_30b/13_rtllm_arithmetic__task_14/sample_8/functional/generated.v:50: error: product_reg3 Unable to assign to unresolved wires.\n/data/eval/out/run_20260424_203453_201510_6e98ce/tmp/qwen3_coder_30b/13_rtllm_arithmetic__task_14/sample_8/functional/generated.v:51: error: product_reg4 Unable to assign to unresolved wires.\n4 error(s) during elaboration.\n",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": false,
  "functional_ok": false,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    // Extended input signals
    wire [7:0] a_ext = {mul_a, 4'b0000};
    wire [7:0] b_ext = {mul_b, 4'b0000};
    
    // Partial products
    wire [7:0] pp0 = b_ext[0] ? a_ext : 8'b00000000;
    wire [7:0] pp1 = b_ext[1] ? (a_ext << 1) : 8'b00000000;
    wire [7:0] pp2 = b_ext[2] ? (a_ext << 2) : 8'b00000000;
    wire [7:0] pp3 = b_ext[3] ? (a_ext << 3) : 8'b00000000;
    
    // Intermediate sums
    reg [7:0] sum0;
    reg [7:0] sum1;
    reg [7:0] sum2;
    reg [7:0] sum3;
    
    // Final product
    reg [7:0] product;
    
    always @(posedge clk or negedge rst_n) begin
        if (!rst_n) begin
            sum0 <= 8'b00000000;
...

[stdout]
===========Test completed with         100 / 100 failures===========
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_14/tb.v:55: $finish called at 3010 (1ns)

[error]
OpenLane failed: 2

[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    // Extended input signals
    wire [7:0] ext_a;
    wire [7:0] ext_b;
    
    // Partial products
    wire [7:0] pp0, pp1, pp2, pp3;
    
    // Intermediate sums
    reg [7:0] sum0, sum1, sum2;
    reg [7:0] product;
    
    // Extend inputs
    assign ext_a = {4'b0000, mul_a};
    assign ext_b = {4'b0000, mul_b};
    
    // Generate partial products
    assign pp0 = (ext_b[0]) ? ext_a : 8'd0;
    assign pp1 = (ext_b[1]) ? (ext_a << 1) : 8'd0;
    assign pp2 = (ext_b[2]) ? (ext_a << 2) : 8'd0;
    assign pp3 = (ext_b[3]) ? (ext_a << 3) : 8'd0;
    
    always @(posedge clk or negedge rst_n) begin
...

[stdout]
===========Test completed with          96 / 100 failures===========
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_14/tb.v:55: $finish called at 3010 (1ns)

[error]
OpenLane failed: 2

[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    reg [7:0] product_reg;
    reg [7:0] sum_reg0, sum_reg1, sum_reg2;
    reg [7:0] partial_product;
    reg [3:0] multiplicand_ext;
    reg [3:0] multiplier_ext;
    
    integer i;
    
    // Extend inputs
    assign multiplicand_ext = {4{1'b0}} | mul_a;
    assign multiplier_ext = {4{1'b0}} | mul_b;
    
    always @(posedge clk or negedge rst_n) begin
        if (!rst_n) begin
            product_reg <= 8'b0;
            sum_reg0 <= 8'b0;
            sum_reg1 <= 8'b0;
            sum_reg2 <= 8'b0;
        end else begin
            // First level of partial products
            partial_product <= 8'b0;
            for (i = 0; i < size; i = i + 1) begin
...

[stdout]
===========Test completed with           x / 100 failures===========
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_14/tb.v:55: $finish called at 3010 (1ns)

[error]
OpenLane failed: 2

[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    // Extended input signals
    wire [7:0] a_ext = {mul_a, 4'b0000};
    wire [7:0] b_ext = {mul_b, 4'b0000};
    
    // Partial products
    wire [7:0] pp0 = b_ext[0] ? a_ext : 8'b00000000;
    wire [7:0] pp1 = b_ext[1] ? (a_ext << 1) : 8'b00000000;
    wire [7:0] pp2 = b_ext[2] ? (a_ext << 2) : 8'b00000000;
    wire [7:0] pp3 = b_ext[3] ? (a_ext << 3) : 8'b00000000;
    
    // Intermediate sums
    reg [7:0] sum0;
    reg [7:0] sum1;
    reg [7:0] sum2;
    reg [7:0] sum3;
    
    // Final product
    reg [7:0] product;
    
    always @(posedge clk or negedge rst_n) begin
        if (!rst_n) begin
            sum0 <= 8'b00000000;
...

[stdout]
===========Test completed with         100 / 100 failures===========
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_14/tb.v:55: $finish called at 3010 (1ns)

[error]
OpenLane failed: 2

[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    // Extended input signals
    wire [7:0] ext_a;
    wire [7:0] ext_b;
    
    // Partial products
    wire [7:0] pp0, pp1, pp2, pp3;
    
    // Intermediate sums
    reg [7:0] sum0, sum1, sum2;
    reg [7:0] product;
    
    // Extend inputs
    assign ext_a = {4'b0000, mul_a};
    assign ext_b = {4'b0000, mul_b};
    
    // Generate partial products
    assign pp0 = (ext_b[0]) ? ext_a : 8'd0;
    assign pp1 = (ext_b[1]) ? (ext_a << 1) : 8'd0;
    assign pp2 = (ext_b[2]) ? (ext_a << 2) : 8'd0;
    assign pp3 = (ext_b[3]) ? (ext_a << 3) : 8'd0;
    
    always @(posedge clk or negedge rst_n) begin
...

[stdout]
===========Test completed with          96 / 100 failures===========
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_14/tb.v:55: $finish called at 3010 (1ns)

[error]
OpenLane failed: 2

[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    reg [7:0] product_reg;
    reg [7:0] sum_reg0, sum_reg1, sum_reg2;
    reg [7:0] partial_product;
    reg [3:0] multiplicand_ext;
    reg [3:0] multiplier_ext;
    
    integer i;
    
    // Extend inputs
    assign multiplicand_ext = {4{1'b0}} | mul_a;
    assign multiplier_ext = {4{1'b0}} | mul_b;
    
    always @(posedge clk or negedge rst_n) begin
        if (!rst_n) begin
            product_reg <= 8'b0;
            sum_reg0 <= 8'b0;
            sum_reg1 <= 8'b0;
            sum_reg2 <= 8'b0;
        end else begin
            // First level of partial products
            partial_product <= 8'b0;
            for (i = 0; i < size; i = i + 1) begin
...

[stdout]
===========Test completed with           x / 100 failures===========
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_14/tb.v:55: $finish called at 3010 (1ns)

[error]
OpenLane failed: 2

[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    // Extended input signals
    wire [7:0] a_ext = {mul_a, 4'b0000};
    wire [7:0] b_ext = {mul_b, 4'b0000};
    
    // Partial products
    wire [7:0] pp0 = b_ext[0] ? a_ext : 8'b00000000;
    wire [7:0] pp1 = b_ext[1] ? (a_ext << 1) : 8'b00000000;
    wire [7:0] pp2 = b_ext[2] ? (a_ext << 2) : 8'b00000000;
    wire [7:0] pp3 = b_ext[3] ? (a_ext << 3) : 8'b00000000;
    
    // Intermediate sum registers
    reg [7:0] sum0;
    reg [7:0] sum1;
    reg [7:0] sum2;
    reg [7:0] sum3;
    
    // Final product register
    reg [7:0] product;
    
    always @(posedge clk or negedge rst_n) begin
        if (!rst_n) begin
            sum0 <= 8'b00000000;
...

[stdout]
===========Test completed with         100 / 100 failures===========
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_14/tb.v:55: $finish called at 3010 (1ns)

[error]
OpenLane failed: 2

[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module multi_pipe_4bit (
    input clk,
    input rst_n,
    input [3:0] mul_a,
    input [3:0] mul_b,
    output [7:0] mul_out
);

    parameter size = 4;
    
    // Extended input signals
    wire [7:0] a_ext;
    wire [7:0] b_ext;
    
    // Partial products
    wire [7:0] pp0, pp1, pp2, pp3;
    
    // Intermediate sums
    reg [7:0] sum0, sum1, sum2;
    reg [7:0] product;
    
    // Extend inputs
    assign a_ext = {4'b0000, mul_a};
    assign b_ext = {4'b0000, mul_b};
    
    // Generate partial products
    assign pp0 = (b_ext[0]) ? a_ext : 8'b00000000;
    assign pp1 = (b_ext[1]) ? (a_ext << 1) : 8'b00000000;
    assign pp2 = (b_ext[2]) ? (a_ext << 2) : 8'b00000000;
    assign pp3 = (b_ext[3]) ? (a_ext << 3) : 8'b00000000;
    
    // Add partial products
...

[stdout]
===========Test completed with          96 / 100 failures===========
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_14/tb.v:55: $finish called at 3010 (1ns)

[error]
OpenLane failed: 2

[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}