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gpt-5.4-nano | RAG off

13_rtllm_arithmetic / task_09 | verified_div_16bit

benchmarkrtllm
task_idrtllm/13_rtllm_arithmetic/task_09
samples_total10
final_success_samples0
final_success_rate_samples0.0%
functional_pass_rate_samples0.0%
synth_pass_rate_samples0.0%
source_runsrun_20260427_102437_171676_163c0c

Что показывает эта страница

Здесь перечислены все реальные попытки этой модели на одной задаче. По каждой попытке можно увидеть, до какой стадии она дошла, где именно сломалась и какое сообщение об ошибке вернулось из syntax, functional или synthesis.

Samples

sample run extract_ok syntax_ok functional_ok openlane_ok final_success failure_stage failure_reason details
sample_1 run_20260427_102437_171676_163c0c ok failed failed skipped failed syntax /data/eval/out/run_20260427_102437_171676_163c0c/tmp/gpt5_4_nano/rtllm__13_rtllm_arithmetic__task_09/sample_1/generated.v:8: error: 'result' has already been declared in this scope.
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\gpt-5-4-nano\rag_off\benchmarks\rtllm\tasks\rtllm__13_rtllm_arithmetic__task_09\samples\run_20260427_102437_171676_163c0c__sample_1
generated.v preview 
module verified_div_16bit (
    input  [15:0] A,
    input  [7:0]  B,
    output [15:0] result,
    output [15:0] odd
);

    reg [15:0] result;
    reg [15:0] odd;

    reg [15:0] a_reg;
    reg [7:0]  b_reg;

    integer i;

    always @(*) begin
        a_reg = A;
        b_reg = B;
    end

    always @(*) begin
        reg [15:0] rem;
        reg [15:0] quot;
        reg [7:0]  divd_bits;
        reg [7:0]  diff;
        reg        gt;

        rem  = 16'd0;
        quot = 16'd0;

        if (b_reg == 8'd0) begin
            quot = 16'd0;
...
syntax details 
[stderr]
/data/eval/out/run_20260427_102437_171676_163c0c/tmp/gpt5_4_nano/rtllm__13_rtllm_arithmetic__task_09/sample_1/generated.v:8: error: 'result' has already been declared in this scope.
/data/eval/out/run_20260427_102437_171676_163c0c/tmp/gpt5_4_nano/rtllm__13_rtllm_arithmetic__task_09/sample_1/generated.v:4:      : It was declared here as a net.
/data/eval/out/run_20260427_102437_171676_163c0c/tmp/gpt5_4_nano/rtllm__13_rtllm_arithmetic__task_09/sample_1/generated.v:9: error: 'odd' has already been declared in this scope.
/data/eval/out/run_20260427_102437_171676_163c0c/tmp/gpt5_4_nano/rtllm__13_rtllm_arithmetic__task_09/sample_1/generated.v:5:      : It was declared here as a net.
functional details 
[stderr]
/data/eval/out/run_20260427_102437_171676_163c0c/tmp/gpt5_4_nano/rtllm__13_rtllm_arithmetic__task_09/sample_1/functional/generated.v:8: error: 'result' has already been declared in this scope.
/data/eval/out/run_20260427_102437_171676_163c0c/tmp/gpt5_4_nano/rtllm__13_rtllm_arithmetic__task_09/sample_1/functional/generated.v:4:      : It was declared here as a net.
/data/eval/out/run_20260427_102437_171676_163c0c/tmp/gpt5_4_nano/rtllm__13_rtllm_arithmetic__task_09/sample_1/functional/generated.v:9: error: 'odd' has already been declared in this scope.
/data/eval/out/run_20260427_102437_171676_163c0c/tmp/gpt5_4_nano/rtllm__13_rtllm_arithmetic__task_09/sample_1/functional/generated.v:5:      : It was declared here as a net.
synthesis details 
[error]
None
errors[] 
[
  {
    "stage": "syntax",
    "code": "syntax.iverilog_failed",
    "message": "/data/eval/out/run_20260427_102437_171676_163c0c/tmp/gpt5_4_nano/rtllm__13_rtllm_arithmetic__task_09/sample_1/generated.v:8: error: 'result' has already been declared in this scope.\n/data/eval/out/run_20260427_102437_171676_163c0c/tmp/gpt5_4_nano/rtllm__13_rtllm_arithmetic__task_09/sample_1/generated.v:4:      : It was declared here as a net.\n/data/eval/out/run_20260427_102437_171676_163c0c/tmp/gpt5_4_nano/rtllm__13_rtllm_arithmetic__task_09/sample_1/generated.v:9: error: 'odd' has already been declared in this scope.\n/data/eval/out/run_20260427_102437_171676_163c0c/tmp/gpt5_4_nano/rtllm__13_rtllm_arithmetic__task_09/sample_1/generated.v:5:      : It was declared here as a net.\n",
    "retryable": false,
    "details": {}
  },
  {
    "stage": "functional",
    "code": "functional.testbench_failed",
    "message": "/data/eval/out/run_20260427_102437_171676_163c0c/tmp/gpt5_4_nano/rtllm__13_rtllm_arithmetic__task_09/sample_1/functional/generated.v:8: error: 'result' has already been declared in this scope.\n/data/eval/out/run_20260427_102437_171676_163c0c/tmp/gpt5_4_nano/rtllm__13_rtllm_arithmetic__task_09/sample_1/functional/generated.v:4:      : It was declared here as a net.\n/data/eval/out/run_20260427_102437_171676_163c0c/tmp/gpt5_4_nano/rtllm__13_rtllm_arithmetic__task_09/sample_1/functional/generated.v:9: error: 'odd' has already been declared in this scope.\n/data/eval/out/run_20260427_102437_171676_163c0c/tmp/gpt5_4_nano/rtllm__13_rtllm_arithmetic__task_09/sample_1/functional/generated.v:5:      : It was declared here as a net.\n",
    "retryable": false,
    "details": {}
  }
]
outcome 
{
  "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
}
sample_2 run_20260427_102437_171676_163c0c ok ok failed skipped failed functional /workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_09/tb.v:34: error: Unknown module type: div_16bit
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\gpt-5-4-nano\rag_off\benchmarks\rtllm\tasks\rtllm__13_rtllm_arithmetic__task_09\samples\run_20260427_102437_171676_163c0c__sample_2
generated.v preview 
module verified_div_16bit (
    input  [15:0] A,
    input  [7:0]  B,
    output [15:0] result,
    output [15:0] odd
);

    reg [15:0] result_r;
    reg [15:0] odd_r;

    reg [15:0] a_reg;
    reg [7:0]  b_reg;

    integer i;
    reg [15:0] rem;
    reg [15:0] quot;

    always @ (A or B) begin
        a_reg <= A;
        b_reg <= B;
    end

    always @ (A or B) begin
        rem  = 16'd0;
        quot = 16'd0;

        if (b_reg == 8'd0) begin
            quot = 16'd0;
            rem  = a_reg;
        end else begin
            for (i = 15; i >= 0; i = i - 1) begin
                rem = {rem[14:0], a_reg[i]};  // shift in next dividend bit
...
functional details 
[stderr]
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_09/tb.v:34: error: Unknown module type: div_16bit
3 error(s) during elaboration.
*** These modules were missing:
        div_16bit referenced 1 times.
***
synthesis details 
[error]
None
errors[] 
[
  {
    "stage": "functional",
    "code": "functional.testbench_failed",
    "message": "/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_09/tb.v:34: error: Unknown module type: div_16bit\n3 error(s) during elaboration.\n*** These modules were missing:\n        div_16bit referenced 1 times.\n***\n",
    "retryable": false,
    "details": {}
  }
]
outcome 
{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": false,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}
sample_3 run_20260427_102437_171676_163c0c ok ok failed skipped failed functional /workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_09/tb.v:34: error: Unknown module type: div_16bit
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\gpt-5-4-nano\rag_off\benchmarks\rtllm\tasks\rtllm__13_rtllm_arithmetic__task_09\samples\run_20260427_102437_171676_163c0c__sample_3
generated.v preview 
module verified_div_16bit (
    input  [15:0] A,
    input  [7:0]  B,
    output reg [15:0] result,
    output reg [15:0] odd
);

    reg [15:0] a_reg;
    reg [7:0]  b_reg;

    reg [15:0] rem;
    reg [15:0] quo;

    integer i;

    always @(*) begin
        a_reg = A;
        b_reg = B;
    end

    always @(*) begin
        quo = 16'd0;
        rem = 16'd0;

        if (b_reg == 8'd0) begin
            quo = 16'd0;
            rem = a_reg;
        end else begin
            for (i = 15; i >= 0; i = i - 1) begin
                rem = {rem[14:0], a_reg[i]};

                if (rem[15:8] > b_reg) begin
...
functional details 
[stderr]
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_09/tb.v:34: error: Unknown module type: div_16bit
3 error(s) during elaboration.
*** These modules were missing:
        div_16bit referenced 1 times.
***
synthesis details 
[error]
None
errors[] 
[
  {
    "stage": "functional",
    "code": "functional.testbench_failed",
    "message": "/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_09/tb.v:34: error: Unknown module type: div_16bit\n3 error(s) during elaboration.\n*** These modules were missing:\n        div_16bit referenced 1 times.\n***\n",
    "retryable": false,
    "details": {}
  }
]
outcome 
{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": false,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}
sample_4 run_20260427_102437_171676_163c0c ok ok failed skipped failed functional /workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_09/tb.v:34: error: Unknown module type: div_16bit
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\gpt-5-4-nano\rag_off\benchmarks\rtllm\tasks\rtllm__13_rtllm_arithmetic__task_09\samples\run_20260427_102437_171676_163c0c__sample_4
generated.v preview 
module verified_div_16bit (
    input  [15:0] A,
    input  [7:0]  B,
    output [15:0] result,
    output [15:0] odd
);

    reg [15:0] result_reg;
    reg [15:0] odd_reg;

    reg [15:0] a_reg;
    reg [7:0]  b_reg;

    assign result = result_reg;
    assign odd    = odd_reg;

    always @(*) begin
        a_reg = A;
        b_reg = B;
    end

    integer i;
    reg [15:0] rem;
    reg [15:0] quot;
    reg [7:0]  divbits;
    reg [7:0]  diff;

    always @(*) begin
        rem  = 16'd0;
        quot = 16'd0;

        if (b_reg == 8'd0) begin
...
functional details 
[stderr]
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_09/tb.v:34: error: Unknown module type: div_16bit
3 error(s) during elaboration.
*** These modules were missing:
        div_16bit referenced 1 times.
***
synthesis details 
[error]
None
errors[] 
[
  {
    "stage": "functional",
    "code": "functional.testbench_failed",
    "message": "/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_09/tb.v:34: error: Unknown module type: div_16bit\n3 error(s) during elaboration.\n*** These modules were missing:\n        div_16bit referenced 1 times.\n***\n",
    "retryable": false,
    "details": {}
  }
]
outcome 
{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": false,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}
sample_5 run_20260427_102437_171676_163c0c ok ok failed skipped failed functional /workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_09/tb.v:34: error: Unknown module type: div_16bit
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\gpt-5-4-nano\rag_off\benchmarks\rtllm\tasks\rtllm__13_rtllm_arithmetic__task_09\samples\run_20260427_102437_171676_163c0c__sample_5
generated.v preview 
module verified_div_16bit(
    input  [15:0] A,
    input  [7:0]  B,
    output [15:0] result,
    output [15:0] odd
);
    reg [15:0] a_reg;
    reg [7:0]  b_reg;

    reg [15:0] q_reg;
    reg [15:0] r_reg;

    integer i;

    always @(*) begin
        a_reg = A;
        b_reg = B;
    end

    always @(*) begin
        q_reg = 16'd0;
        r_reg = 16'd0;

        if (b_reg == 8'd0) begin
            q_reg = 16'hFFFF;
            r_reg = a_reg;
        end else begin
            for (i = 15; i >= 0; i = i - 1) begin
                if (r_reg[7:0] > b_reg) begin
                    q_reg[i] = 1'b1;
                    r_reg[7:0] = r_reg[7:0] - b_reg;
                end else begin
...
functional details 
[stderr]
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_09/tb.v:34: error: Unknown module type: div_16bit
3 error(s) during elaboration.
*** These modules were missing:
        div_16bit referenced 1 times.
***
synthesis details 
[error]
None
errors[] 
[
  {
    "stage": "functional",
    "code": "functional.testbench_failed",
    "message": "/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_09/tb.v:34: error: Unknown module type: div_16bit\n3 error(s) during elaboration.\n*** These modules were missing:\n        div_16bit referenced 1 times.\n***\n",
    "retryable": false,
    "details": {}
  }
]
outcome 
{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": false,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}
sample_6 run_20260427_102437_171676_163c0c ok ok failed skipped failed functional /workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_09/tb.v:34: error: Unknown module type: div_16bit
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\gpt-5-4-nano\rag_off\benchmarks\rtllm\tasks\rtllm__13_rtllm_arithmetic__task_09\samples\run_20260427_102437_171676_163c0c__sample_6
generated.v preview 
module verified_div_16bit(
    input  [15:0] A,
    input  [7:0]  B,
    output [15:0] result,
    output [15:0] odd
);
    reg [15:0] a_reg;
    reg [7:0]  b_reg;

    reg [15:0] q_reg;
    reg [15:0] r_reg;

    integer i;

    always @(*) begin
        a_reg = A;
        b_reg = B;
    end

    always @(*) begin
        reg [15:0] rem;
        reg [15:0] quot;
        reg [7:0]  top_bits;
        reg [7:0]  diff;
        reg [15:0] next_rem;

        rem = 16'd0;
        quot = 16'd0;

        if (b_reg == 8'd0) begin
            quot = 16'd0;
            rem  = a_reg;
...
functional details 
[stderr]
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_09/tb.v:34: error: Unknown module type: div_16bit
3 error(s) during elaboration.
*** These modules were missing:
        div_16bit referenced 1 times.
***
synthesis details 
[error]
None
errors[] 
[
  {
    "stage": "functional",
    "code": "functional.testbench_failed",
    "message": "/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_09/tb.v:34: error: Unknown module type: div_16bit\n3 error(s) during elaboration.\n*** These modules were missing:\n        div_16bit referenced 1 times.\n***\n",
    "retryable": false,
    "details": {}
  }
]
outcome 
{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": false,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}
sample_7 run_20260427_102437_171676_163c0c ok ok failed skipped failed functional /workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_09/tb.v:34: error: Unknown module type: div_16bit
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\gpt-5-4-nano\rag_off\benchmarks\rtllm\tasks\rtllm__13_rtllm_arithmetic__task_09\samples\run_20260427_102437_171676_163c0c__sample_7
generated.v preview 
module verified_div_16bit(
    input  [15:0] A,
    input  [7:0]  B,
    output [15:0] result,
    output [15:0] odd
);
    reg [15:0] a_reg;
    reg [7:0]  b_reg;

    reg [15:0] result_reg;
    reg [15:0] odd_reg;

    assign result = result_reg;
    assign odd    = odd_reg;

    always @(*) begin
        a_reg = A;
        b_reg = B;
    end

    integer i;
    reg [15:0] rem;
    reg [15:0] quot;

    always @(*) begin
        rem  = 16'd0;
        quot = 16'd0;

        if (b_reg == 8'd0) begin
            quot = 16'hFFFF;
            rem  = a_reg;
        end else begin
...
functional details 
[stderr]
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_09/tb.v:34: error: Unknown module type: div_16bit
3 error(s) during elaboration.
*** These modules were missing:
        div_16bit referenced 1 times.
***
synthesis details 
[error]
None
errors[] 
[
  {
    "stage": "functional",
    "code": "functional.testbench_failed",
    "message": "/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_09/tb.v:34: error: Unknown module type: div_16bit\n3 error(s) during elaboration.\n*** These modules were missing:\n        div_16bit referenced 1 times.\n***\n",
    "retryable": false,
    "details": {}
  }
]
outcome 
{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": false,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}
sample_8 run_20260427_102437_171676_163c0c ok ok failed skipped failed functional /workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_09/tb.v:34: error: Unknown module type: div_16bit
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\gpt-5-4-nano\rag_off\benchmarks\rtllm\tasks\rtllm__13_rtllm_arithmetic__task_09\samples\run_20260427_102437_171676_163c0c__sample_8
generated.v preview 
module verified_div_16bit (
    input  [15:0] A,
    input  [7:0]  B,
    output [15:0] result,
    output [15:0] odd
);

    reg [15:0] result_reg;
    reg [15:0] odd_reg;

    reg [15:0] a_reg;
    reg [7:0]  b_reg;

    assign result = result_reg;
    assign odd    = odd_reg;

    always @(*) begin
        a_reg = A;
        b_reg = B;
    end

    integer i;
    reg [15:0] rem;
    reg [15:0] quot;
    reg [7:0]  divd_bits;
    reg [7:0]  diff;

    always @(*) begin
        rem  = 16'd0;
        quot = 16'd0;

        if (b_reg == 8'd0) begin
...
functional details 
[stderr]
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_09/tb.v:34: error: Unknown module type: div_16bit
3 error(s) during elaboration.
*** These modules were missing:
        div_16bit referenced 1 times.
***
synthesis details 
[error]
None
errors[] 
[
  {
    "stage": "functional",
    "code": "functional.testbench_failed",
    "message": "/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_09/tb.v:34: error: Unknown module type: div_16bit\n3 error(s) during elaboration.\n*** These modules were missing:\n        div_16bit referenced 1 times.\n***\n",
    "retryable": false,
    "details": {}
  }
]
outcome 
{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": false,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}
sample_9 run_20260427_102437_171676_163c0c ok ok failed skipped failed functional /workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_09/tb.v:34: error: Unknown module type: div_16bit
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\gpt-5-4-nano\rag_off\benchmarks\rtllm\tasks\rtllm__13_rtllm_arithmetic__task_09\samples\run_20260427_102437_171676_163c0c__sample_9
generated.v preview 
module verified_div_16bit(
    input  [15:0] A,
    input  [7:0]  B,
    output [15:0] result,
    output [15:0] odd
);
    reg [15:0] result_reg;
    reg [15:0] odd_reg;

    reg [15:0] a_reg;
    reg [7:0]  b_reg;

    assign result = result_reg;
    assign odd    = odd_reg;

    always @(*) begin
        a_reg = A;
        b_reg = B;
    end

    integer i;
    reg [15:0] rem;
    reg [15:0] quot;
    reg [7:0]  div_part;
    reg [7:0]  diff;

    always @(*) begin
        rem  = 16'd0;
        quot = 16'd0;

        if (b_reg == 8'd0) begin
            quot = 16'hFFFF;
...
functional details 
[stderr]
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_09/tb.v:34: error: Unknown module type: div_16bit
3 error(s) during elaboration.
*** These modules were missing:
        div_16bit referenced 1 times.
***
synthesis details 
[error]
None
errors[] 
[
  {
    "stage": "functional",
    "code": "functional.testbench_failed",
    "message": "/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_09/tb.v:34: error: Unknown module type: div_16bit\n3 error(s) during elaboration.\n*** These modules were missing:\n        div_16bit referenced 1 times.\n***\n",
    "retryable": false,
    "details": {}
  }
]
outcome 
{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": false,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}
sample_10 run_20260427_102437_171676_163c0c ok ok failed skipped failed functional /workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_09/tb.v:34: error: Unknown module type: div_16bit
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\gpt-5-4-nano\rag_off\benchmarks\rtllm\tasks\rtllm__13_rtllm_arithmetic__task_09\samples\run_20260427_102437_171676_163c0c__sample_10
generated.v preview 
module verified_div_16bit (
    input  [15:0] A,
    input  [7:0]  B,
    output [15:0] result,
    output [15:0] odd
);

    reg [15:0] a_reg;
    reg [7:0]  b_reg;

    reg [15:0] q_reg;
    reg [15:0] r_reg;

    integer i;

    always @(*) begin
        a_reg = A;
        b_reg = B;
    end

    always @(*) begin
        q_reg = 16'd0;
        r_reg = 16'd0;

        if (b_reg == 8'd0) begin
            q_reg = 16'd0;
            r_reg = a_reg;
        end else begin
            for (i = 15; i >= 0; i = i - 1) begin
                if (r_reg[15:8] > {8{1'b0}}) begin
                    // no-op; keep structure consistent
                end
...
functional details 
[stderr]
/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_09/tb.v:34: error: Unknown module type: div_16bit
3 error(s) during elaboration.
*** These modules were missing:
        div_16bit referenced 1 times.
***
synthesis details 
[error]
None
errors[] 
[
  {
    "stage": "functional",
    "code": "functional.testbench_failed",
    "message": "/workspace/banchmarks/rtllm/13_rtllm_arithmetic/task_09/tb.v:34: error: Unknown module type: div_16bit\n3 error(s) during elaboration.\n*** These modules were missing:\n        div_16bit referenced 1 times.\n***\n",
    "retryable": false,
    "details": {}
  }
]
outcome 
{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": false,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}