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codegemma:7b | RAG off

02_clock_domain_crossing / task_24 | cdc_bus_sync

benchmarkilyasov
task_idilyasov/02_clock_domain_crossing/task_24
samples_total10
final_success_samples5
final_success_rate_samples50.0%
functional_pass_rate_samples50.0%
synth_pass_rate_samples50.0%
source_runsrun_20260427_200103_669320_45d5dc

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_200103_669320_45d5dc ok failed failed skipped failed syntax /data/eval/out/run_20260427_200103_669320_45d5dc/tmp/codegemma_7/pashencev__02_clock_domain_crossing__task_24/sample_1/generated.v:2: syntax error
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\codegemma-7b\rag_off\benchmarks\ilyasov\tasks\ilyasov__02_clock_domain_crossing__task_24\samples\run_20260427_200103_669320_45d5dc__sample_1
generated.v preview
module cdc_bus_sync(
    input clk_a, rst_n_a, valid_a, [15:0] data_a,
    input clk_b, rst_n_b,
    output reg [15:0] data_b, output reg valid_b
);

    reg [15:0] data_b_reg;
    reg valid_b_reg;
    reg valid_b_edge;

    always @(posedge clk_a) begin
        if (!rst_n_a) begin
            data_b_reg <= 0;
            valid_b_reg <= 0;
            valid_b_edge <= 0;
        end else begin
            valid_b_edge <= valid_a;
            if (valid_b_edge) begin
                data_b_reg <= data_a;
                valid_b_reg <= 1'b1;
            end else begin
                valid_b_reg <= 0;
            end
        end
    end

    always @(posedge clk_b) begin
        if (!rst_n_b) begin
            data_b <= 0;
            valid_b <= 0;
        end else begin
            data_b <= data_b_reg;
...
syntax details
[stderr]
/data/eval/out/run_20260427_200103_669320_45d5dc/tmp/codegemma_7/pashencev__02_clock_domain_crossing__task_24/sample_1/generated.v:2: syntax error
/data/eval/out/run_20260427_200103_669320_45d5dc/tmp/codegemma_7/pashencev__02_clock_domain_crossing__task_24/sample_1/generated.v:1: Errors in port declarations.
functional details
[stderr]
/data/eval/out/run_20260427_200103_669320_45d5dc/tmp/codegemma_7/pashencev__02_clock_domain_crossing__task_24/sample_1/functional/generated.v:2: syntax error
/data/eval/out/run_20260427_200103_669320_45d5dc/tmp/codegemma_7/pashencev__02_clock_domain_crossing__task_24/sample_1/functional/generated.v:1: Errors in port declarations.
synthesis details
[error]
None
errors[]
[
  {
    "stage": "syntax",
    "code": "syntax.iverilog_failed",
    "message": "/data/eval/out/run_20260427_200103_669320_45d5dc/tmp/codegemma_7/pashencev__02_clock_domain_crossing__task_24/sample_1/generated.v:2: syntax error\n/data/eval/out/run_20260427_200103_669320_45d5dc/tmp/codegemma_7/pashencev__02_clock_domain_crossing__task_24/sample_1/generated.v:1: Errors in port declarations.\n",
    "retryable": false,
    "details": {}
  },
  {
    "stage": "functional",
    "code": "functional.testbench_failed",
    "message": "/data/eval/out/run_20260427_200103_669320_45d5dc/tmp/codegemma_7/pashencev__02_clock_domain_crossing__task_24/sample_1/functional/generated.v:2: syntax error\n/data/eval/out/run_20260427_200103_669320_45d5dc/tmp/codegemma_7/pashencev__02_clock_domain_crossing__task_24/sample_1/functional/generated.v:1: Errors in port declarations.\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_200103_669320_45d5dc ok ok ok ok ok success Full pipeline success
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\codegemma-7b\rag_off\benchmarks\ilyasov\tasks\ilyasov__02_clock_domain_crossing__task_24\samples\run_20260427_200103_669320_45d5dc__sample_2
generated.v preview
module cdc_bus_sync(
    input clk_a, rst_n_a,
    input [15:0] data_a, valid_a,
    input clk_b, rst_n_b,
    output reg [15:0] data_b, valid_b
);

    reg [15:0] data_b_reg;
    reg valid_b_reg;
    reg valid_b_edge;

    always @(posedge clk_a) begin
        if (~rst_n_a) begin
            data_b_reg <= 0;
            valid_b_reg <= 0;
            valid_b_edge <= 0;
        end else begin
            valid_b_edge <= valid_a & ~valid_b_reg;
            valid_b_reg <= valid_a;
            if (valid_b_edge) begin
                data_b_reg <= data_a;
                valid_b <= 1'b1;
            end else begin
                valid_b <= 1'b0;
            end
        end
    end

    assign data_b = data_b_reg;

endmodule
functional details
[stdout]
TEST_PASSED
/workspace/banchmarks/pashencev/02_clock_domain_crossing/task_24/tb.v:81: $finish called at 150000 (1ps)
synthesis details
[error]
None
outcome
{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": true,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": true,
  "success": true
}
sample_3 run_20260427_200103_669320_45d5dc ok failed failed skipped failed syntax /data/eval/out/run_20260427_200103_669320_45d5dc/tmp/codegemma_7/pashencev__02_clock_domain_crossing__task_24/sample_3/generated.v:22: error: valid_b Unable to assign to unresolved wires.
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\codegemma-7b\rag_off\benchmarks\ilyasov\tasks\ilyasov__02_clock_domain_crossing__task_24\samples\run_20260427_200103_669320_45d5dc__sample_3
generated.v preview
module cdc_bus_sync(
    input clk_a, rst_n_a,
    input [15:0] data_a, valid_a,
    input clk_b, rst_n_b,
    output reg [15:0] data_b, valid_b
);

    reg data_b_sync;
    reg valid_b_sync;
    reg valid_b_edge;

    always @(posedge clk_a) begin
        if (!rst_n_a) begin
            data_b_sync <= 0;
            valid_b_sync <= 0;
            valid_b_edge <= 0;
        end else begin
            valid_b_edge <= valid_a & ~valid_b_sync;
            valid_b_sync <= #1 valid_a;
            if (valid_b_edge) begin
                data_b_sync <= data_a;
                valid_b <= #1 1'b1;
            end else begin
                valid_b <= 0;
            end
        end
    end

    assign data_b = data_b_sync;
    assign valid_b = valid_b_sync;

endmodule
syntax details
[stderr]
/data/eval/out/run_20260427_200103_669320_45d5dc/tmp/codegemma_7/pashencev__02_clock_domain_crossing__task_24/sample_3/generated.v:22: error: valid_b Unable to assign to unresolved wires.
/data/eval/out/run_20260427_200103_669320_45d5dc/tmp/codegemma_7/pashencev__02_clock_domain_crossing__task_24/sample_3/generated.v:24: error: valid_b Unable to assign to unresolved wires.
2 error(s) during elaboration.
functional details
[stderr]
/data/eval/out/run_20260427_200103_669320_45d5dc/tmp/codegemma_7/pashencev__02_clock_domain_crossing__task_24/sample_3/functional/generated.v:22: error: valid_b Unable to assign to unresolved wires.
/data/eval/out/run_20260427_200103_669320_45d5dc/tmp/codegemma_7/pashencev__02_clock_domain_crossing__task_24/sample_3/functional/generated.v:24: error: valid_b Unable to assign to unresolved wires.
/workspace/banchmarks/pashencev/02_clock_domain_crossing/task_24/tb.v:15: warning: Port 4 (valid_a) of cdc_bus_sync expects 16 bits, got 1.
/workspace/banchmarks/pashencev/02_clock_domain_crossing/task_24/tb.v:15:        : Padding 15 high bits of the port.
/workspace/banchmarks/pashencev/02_clock_domain_crossing/task_24/tb.v:15: warning: Port 8 (valid_b) of cdc_bus_sync expects 16 bits, got 1.
/workspace/banchmarks/pashencev/02_clock_domain_crossing/task_24/tb.v:15:        : Padding 15 high bits of the port.
warning: Found both default and explicit timescale based delays. Use
       : -Wtimescale to find the design element(s) with no explicit
       : timescale.
2 error(s) during elaboration.
synthesis details
[error]
None
errors[]
[
  {
    "stage": "syntax",
    "code": "syntax.iverilog_failed",
    "message": "/data/eval/out/run_20260427_200103_669320_45d5dc/tmp/codegemma_7/pashencev__02_clock_domain_crossing__task_24/sample_3/generated.v:22: error: valid_b Unable to assign to unresolved wires.\n/data/eval/out/run_20260427_200103_669320_45d5dc/tmp/codegemma_7/pashencev__02_clock_domain_crossing__task_24/sample_3/generated.v:24: error: valid_b Unable to assign to unresolved wires.\n2 error(s) during elaboration.\n",
    "retryable": false,
    "details": {}
  },
  {
    "stage": "functional",
    "code": "functional.testbench_failed",
    "message": "/data/eval/out/run_20260427_200103_669320_45d5dc/tmp/codegemma_7/pashencev__02_clock_domain_crossing__task_24/sample_3/functional/generated.v:22: error: valid_b Unable to assign to unresolved wires.\n/data/eval/out/run_20260427_200103_669320_45d5dc/tmp/codegemma_7/pashencev__02_clock_domain_crossing__task_24/sample_3/functional/generated.v:24: error: valid_b Unable to assign to unresolved wires.\n/workspace/banchmarks/pashencev/02_clock_domain_crossing/task_24/tb.v:15: warning: Port 4 (valid_a) of cdc_bus_sync expects 16 bits, got 1.\n/workspace/banchmarks/pashencev/02_clock_domain_crossing/task_24/tb.v:15:        : Padding 15 high bits of the port.\n/workspace/banchmarks/pashencev/02_clock_domain_crossing/task_24/tb.v:15: warning: Port 8 (valid_b) of cdc_bus_sync expects 16 bits, got 1.\n/workspace/banchmarks/pashencev/02_clock_domain_crossing/task_24/tb.v:15:        : Padding 15 high bits of the port.\nwarning: Found both default and explicit timescale based delays. Use\n       : -Wtimescale to find the design element(s) with no explicit\n       : timescale.\n2 error(s) during elaboration.\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_4 run_20260427_200103_669320_45d5dc ok ok failed failed failed functional Functional output contains failure marker: TEST_FAILED. ERROR: Data corrupted during transfer. Expected FFFF, got 0000
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\codegemma-7b\rag_off\benchmarks\ilyasov\tasks\ilyasov__02_clock_domain_crossing__task_24\samples\run_20260427_200103_669320_45d5dc__sample_4
generated.v preview
module cdc_bus_sync(
    input clk_a, rst_n_a,
    input [15:0] data_a, valid_a,
    input clk_b, rst_n_b,
    output reg [15:0] data_b, valid_b
);

    reg data_b_reg;
    reg valid_b_reg;
    reg valid_a_sync;
    reg valid_a_edge;

    always @(posedge clk_a) begin
        if (!rst_n_a) begin
            valid_a_sync <= 0;
        end else begin
            valid_a_sync <= valid_a;
        end
    end

    always @(posedge clk_b) begin
        if (!rst_n_b) begin
            valid_b_reg <= 0;
            data_b_reg <= 0;
        end else begin
            valid_b_reg <= valid_a_sync;
            if (valid_a_edge) begin
                data_b_reg <= data_a;
            end
        end
    end
...
functional details
[stdout]
ERROR: Data corrupted during transfer. Expected FFFF, got 0000
TEST_FAILED
/workspace/banchmarks/pashencev/02_clock_domain_crossing/task_24/tb.v:81: $finish called at 135000 (1ps)
synthesis details
[error]
None
errors[]
[
  {
    "stage": "functional",
    "code": "functional.output_failed_marker",
    "message": "Functional output contains failure marker: TEST_FAILED. ERROR: Data corrupted during transfer. Expected FFFF, got 0000",
    "retryable": false,
    "details": {
      "marker": "TEST_FAILED"
    }
  },
  {
    "stage": "openlane",
    "code": "openlane.invalidated_by_functional_failure",
    "message": "OpenLane result invalidated because functional validation failed after output-marker correction",
    "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_200103_669320_45d5dc ok ok ok ok ok success Full pipeline success
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\codegemma-7b\rag_off\benchmarks\ilyasov\tasks\ilyasov__02_clock_domain_crossing__task_24\samples\run_20260427_200103_669320_45d5dc__sample_5
generated.v preview
module cdc_bus_sync(
    input clk_a, rst_n_a,
    input [15:0] data_a, valid_a,
    input clk_b, rst_n_b,
    output reg [15:0] data_b, valid_b
);

    reg valid_b_sync;
    reg valid_b_edge;

    always @(posedge clk_a) begin
        if (!rst_n_a) begin
            valid_b_sync <= 0;
            valid_b_edge <= 0;
        end else begin
            valid_b_sync <= valid_a;
            valid_b_edge <= ~valid_b_edge & valid_b_sync;
        end
    end

    always @(posedge clk_b) begin
        if (!rst_n_b) begin
            data_b <= 0;
            valid_b <= 0;
        end else begin
            if (valid_b_edge) begin
                data_b <= data_a;
                valid_b <= 1;
            end else begin
                valid_b <= 0;
            end
        end
...
functional details
[stdout]
TEST_PASSED
/workspace/banchmarks/pashencev/02_clock_domain_crossing/task_24/tb.v:81: $finish called at 158000 (1ps)
synthesis details
[error]
None
outcome
{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": true,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": true,
  "success": true
}
sample_6 run_20260427_200103_669320_45d5dc ok failed failed skipped failed syntax /data/eval/out/run_20260427_200103_669320_45d5dc/tmp/codegemma_7/pashencev__02_clock_domain_crossing__task_24/sample_6/generated.v:2: syntax error
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\codegemma-7b\rag_off\benchmarks\ilyasov\tasks\ilyasov__02_clock_domain_crossing__task_24\samples\run_20260427_200103_669320_45d5dc__sample_6
generated.v preview
module cdc_bus_sync(
    input clk_a, rst_n_a, valid_a, [15:0] data_a,
    input clk_b, rst_n_b,
    output reg [15:0] data_b, output reg valid_b
);

    reg data_b_reg;
    reg valid_b_reg;
    reg valid_a_sync;

    always @(posedge clk_a) begin
        if (!rst_n_a) begin
            valid_a_sync <= 0;
        end else begin
            valid_a_sync <= valid_a;
        end
    end

    always @(posedge clk_b) begin
        if (!rst_n_b) begin
            data_b <= 0;
            valid_b <= 0;
        end else begin
            if (valid_a_sync) begin
                data_b <= data_a;
                valid_b <= 1;
            end else begin
                valid_b <= 0;
            end
        end
    end
...
syntax details
[stderr]
/data/eval/out/run_20260427_200103_669320_45d5dc/tmp/codegemma_7/pashencev__02_clock_domain_crossing__task_24/sample_6/generated.v:2: syntax error
/data/eval/out/run_20260427_200103_669320_45d5dc/tmp/codegemma_7/pashencev__02_clock_domain_crossing__task_24/sample_6/generated.v:1: Errors in port declarations.
functional details
[stderr]
/data/eval/out/run_20260427_200103_669320_45d5dc/tmp/codegemma_7/pashencev__02_clock_domain_crossing__task_24/sample_6/functional/generated.v:2: syntax error
/data/eval/out/run_20260427_200103_669320_45d5dc/tmp/codegemma_7/pashencev__02_clock_domain_crossing__task_24/sample_6/functional/generated.v:1: Errors in port declarations.
synthesis details
[error]
None
errors[]
[
  {
    "stage": "syntax",
    "code": "syntax.iverilog_failed",
    "message": "/data/eval/out/run_20260427_200103_669320_45d5dc/tmp/codegemma_7/pashencev__02_clock_domain_crossing__task_24/sample_6/generated.v:2: syntax error\n/data/eval/out/run_20260427_200103_669320_45d5dc/tmp/codegemma_7/pashencev__02_clock_domain_crossing__task_24/sample_6/generated.v:1: Errors in port declarations.\n",
    "retryable": false,
    "details": {}
  },
  {
    "stage": "functional",
    "code": "functional.testbench_failed",
    "message": "/data/eval/out/run_20260427_200103_669320_45d5dc/tmp/codegemma_7/pashencev__02_clock_domain_crossing__task_24/sample_6/functional/generated.v:2: syntax error\n/data/eval/out/run_20260427_200103_669320_45d5dc/tmp/codegemma_7/pashencev__02_clock_domain_crossing__task_24/sample_6/functional/generated.v:1: Errors in port declarations.\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_7 run_20260427_200103_669320_45d5dc ok ok ok ok ok success Full pipeline success
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\codegemma-7b\rag_off\benchmarks\ilyasov\tasks\ilyasov__02_clock_domain_crossing__task_24\samples\run_20260427_200103_669320_45d5dc__sample_7
generated.v preview
module cdc_bus_sync(
    input clk_a, rst_n_a, valid_a,
    input clk_b, rst_n_b,
    input [15:0] data_a,
    output reg [15:0] data_b,
    output reg valid_b
);

    reg valid_a_sync;
    reg valid_b_edge;

    always @(posedge clk_a) begin
        if (!rst_n_a) begin
            valid_a_sync <= 0;
        end else begin
            valid_a_sync <= valid_a;
        end
    end

    always @(posedge clk_b) begin
        if (!rst_n_b) begin
            valid_b_edge <= 0;
            data_b <= 0;
            valid_b <= 0;
        end else begin
            if (valid_a_sync) begin
                valid_b_edge <= 1;
            end
            if (valid_b_edge) begin
                data_b <= data_a;
                valid_b <= 1;
            end else begin
...
functional details
[stdout]
TEST_PASSED
/workspace/banchmarks/pashencev/02_clock_domain_crossing/task_24/tb.v:81: $finish called at 146000 (1ps)
synthesis details
[error]
None
outcome
{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": true,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": true,
  "success": true
}
sample_8 run_20260427_200103_669320_45d5dc ok ok ok ok ok success Full pipeline success
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\codegemma-7b\rag_off\benchmarks\ilyasov\tasks\ilyasov__02_clock_domain_crossing__task_24\samples\run_20260427_200103_669320_45d5dc__sample_8
generated.v preview
module cdc_bus_sync(
    input clk_a, rst_n_a, valid_a,
    input clk_b, rst_n_b,
    input [15:0] data_a,
    output reg [15:0] data_b,
    output reg valid_b
);

    reg valid_b_sync;
    reg valid_b_edge;

    always @(posedge clk_a) begin
        if (!rst_n_a) begin
            valid_b_sync <= 0;
            valid_b_edge <= 0;
        end else begin
            valid_b_sync <= valid_a;
            valid_b_edge <= valid_b_sync & ~valid_b;
        end
    end

    always @(posedge clk_b) begin
        if (!rst_n_b) begin
            data_b <= 0;
            valid_b <= 0;
        end else begin
            if (valid_b_edge) begin
                data_b <= data_a;
                valid_b <= 1;
            end else begin
                valid_b <= 0;
            end
...
functional details
[stdout]
TEST_PASSED
/workspace/banchmarks/pashencev/02_clock_domain_crossing/task_24/tb.v:81: $finish called at 158000 (1ps)
synthesis details
[error]
None
outcome
{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": true,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": true,
  "success": true
}
sample_9 run_20260427_200103_669320_45d5dc ok ok ok ok ok success Full pipeline success
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\codegemma-7b\rag_off\benchmarks\ilyasov\tasks\ilyasov__02_clock_domain_crossing__task_24\samples\run_20260427_200103_669320_45d5dc__sample_9
generated.v preview
module cdc_bus_sync(
    input clk_a, rst_n_a,
    input [15:0] data_a, valid_a,
    input clk_b, rst_n_b,
    output reg [15:0] data_b, valid_b
);

    reg valid_b_sync;
    reg valid_b_edge;

    always @(posedge clk_a) begin
        if (~rst_n_a) begin
            valid_b_sync <= 0;
            valid_b_edge <= 0;
        end else begin
            valid_b_sync <= valid_a;
            if (valid_a && !valid_b_edge) begin
                valid_b_edge <= 1;
            end else begin
                valid_b_edge <= 0;
            end
        end
    end

    always @(posedge clk_b) begin
        if (~rst_n_b) begin
            data_b <= 0;
            valid_b <= 0;
        end else begin
            if (valid_b_edge) begin
                data_b <= data_a;
                valid_b <= 1;
...
functional details
[stdout]
TEST_PASSED
/workspace/banchmarks/pashencev/02_clock_domain_crossing/task_24/tb.v:81: $finish called at 135000 (1ps)
synthesis details
[error]
None
outcome
{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": true,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": true,
  "success": true
}
sample_10 run_20260427_200103_669320_45d5dc ok ok failed failed failed functional Functional output contains failure marker: TEST_FAILED. ERROR: Simulation timed out. valid_b was never asserted.
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\codegemma-7b\rag_off\benchmarks\ilyasov\tasks\ilyasov__02_clock_domain_crossing__task_24\samples\run_20260427_200103_669320_45d5dc__sample_10
generated.v preview
module cdc_bus_sync(
    input clk_a, rst_n_a,
    input [15:0] data_a, valid_a,
    input clk_b, rst_n_b,
    output reg [15:0] data_b, valid_b
);

    reg valid_b_sync;
    reg valid_b_edge;

    always @(posedge clk_a) begin
        if (!rst_n_a) begin
            valid_b_sync <= 0;
            valid_b_edge <= 0;
        end else begin
            valid_b_sync <= valid_a;
            valid_b_edge <= valid_b_sync & ~valid_b_sync_d;
        end
    end

    always @(posedge clk_b) begin
        if (!rst_n_b) begin
            data_b <= 0;
            valid_b <= 0;
        end else begin
            if (valid_b_edge) begin
                data_b <= data_a;
                valid_b <= 1;
            end else begin
                valid_b <= 0;
            end
        end
...
functional details
[stdout]
ERROR: Simulation timed out. valid_b was never asserted.
TEST_FAILED
/workspace/banchmarks/pashencev/02_clock_domain_crossing/task_24/tb.v:89: $finish called at 1000000 (1ps)
synthesis details
[error]
None
errors[]
[
  {
    "stage": "functional",
    "code": "functional.output_failed_marker",
    "message": "Functional output contains failure marker: TEST_FAILED. ERROR: Simulation timed out. valid_b was never asserted.",
    "retryable": false,
    "details": {
      "marker": "TEST_FAILED"
    }
  },
  {
    "stage": "openlane",
    "code": "openlane.invalidated_by_functional_failure",
    "message": "OpenLane result invalidated because functional validation failed after output-marker correction",
    "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
}