./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d105564c-c9aa-4df4-ac8e-72a18ffea7cd/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d105564c-c9aa-4df4-ac8e-72a18ffea7cd/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d105564c-c9aa-4df4-ac8e-72a18ffea7cd/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d105564c-c9aa-4df4-ac8e-72a18ffea7cd/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d105564c-c9aa-4df4-ac8e-72a18ffea7cd/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d105564c-c9aa-4df4-ac8e-72a18ffea7cd/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fbd83f7e524270f26b355be3b6fdf116e3fc11da746439b12c865fa2fec80a91 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:09:48,920 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:09:48,984 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d105564c-c9aa-4df4-ac8e-72a18ffea7cd/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-25 00:09:48,989 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:09:48,990 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:09:49,014 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:09:49,015 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:09:49,015 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:09:49,016 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:09:49,017 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:09:49,017 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:09:49,018 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:09:49,018 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:09:49,019 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:09:49,019 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:09:49,020 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:09:49,020 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:09:49,021 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:09:49,022 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:09:49,022 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:09:49,023 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:09:49,028 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:09:49,028 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:09:49,029 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:09:49,033 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:09:49,033 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:09:49,033 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:09:49,034 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:09:49,034 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:09:49,035 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:09:49,035 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:09:49,035 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:09:49,036 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:09:49,036 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:09:49,036 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:09:49,037 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:09:49,037 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:09:49,038 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:09:49,038 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:09:49,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:09:49,039 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:09:49,039 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:09:49,040 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:09:49,040 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:09:49,040 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d105564c-c9aa-4df4-ac8e-72a18ffea7cd/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d105564c-c9aa-4df4-ac8e-72a18ffea7cd/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbd83f7e524270f26b355be3b6fdf116e3fc11da746439b12c865fa2fec80a91 [2023-11-25 00:09:49,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:09:49,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:09:49,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:09:49,408 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:09:49,409 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:09:49,410 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d105564c-c9aa-4df4-ac8e-72a18ffea7cd/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness_negated.i [2023-11-25 00:09:52,731 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:09:53,339 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:09:53,340 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d105564c-c9aa-4df4-ac8e-72a18ffea7cd/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness_negated.i [2023-11-25 00:09:53,394 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d105564c-c9aa-4df4-ac8e-72a18ffea7cd/bin/utaipan-verify-SwPr7d2a91/data/81b1120ce/8ab1d20e38ee46f6ad086a18511fe9d4/FLAGf67e6002e [2023-11-25 00:09:53,410 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d105564c-c9aa-4df4-ac8e-72a18ffea7cd/bin/utaipan-verify-SwPr7d2a91/data/81b1120ce/8ab1d20e38ee46f6ad086a18511fe9d4 [2023-11-25 00:09:53,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:09:53,419 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:09:53,423 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:09:53,423 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:09:53,428 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:09:53,429 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:09:53" (1/1) ... [2023-11-25 00:09:53,430 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@652d493d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:53, skipping insertion in model container [2023-11-25 00:09:53,430 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:09:53" (1/1) ... [2023-11-25 00:09:53,565 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:09:53,885 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d105564c-c9aa-4df4-ac8e-72a18ffea7cd/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness_negated.i[4495,4508] [2023-11-25 00:09:53,894 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d105564c-c9aa-4df4-ac8e-72a18ffea7cd/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness_negated.i[4555,4568] [2023-11-25 00:09:55,040 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:09:55,041 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:09:55,042 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:09:55,044 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:09:55,050 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:09:55,084 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:09:55,085 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:09:55,088 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:09:55,089 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:09:55,606 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-25 00:09:55,607 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-25 00:09:55,608 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-25 00:09:55,609 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-25 00:09:55,611 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-25 00:09:55,612 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-25 00:09:55,612 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-25 00:09:55,613 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-25 00:09:55,614 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-25 00:09:55,614 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-25 00:09:55,935 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:09:55,936 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:09:56,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:09:56,073 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:09:56,088 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d105564c-c9aa-4df4-ac8e-72a18ffea7cd/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness_negated.i[4495,4508] [2023-11-25 00:09:56,089 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d105564c-c9aa-4df4-ac8e-72a18ffea7cd/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness_negated.i[4555,4568] [2023-11-25 00:09:56,157 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:09:56,158 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:09:56,158 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:09:56,160 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:09:56,160 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:09:56,168 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:09:56,168 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:09:56,169 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:09:56,170 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:09:56,229 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-25 00:09:56,231 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-25 00:09:56,231 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-25 00:09:56,232 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-25 00:09:56,233 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-25 00:09:56,234 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-25 00:09:56,235 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-25 00:09:56,235 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-25 00:09:56,236 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-25 00:09:56,236 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-25 00:09:56,440 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8259] [2023-11-25 00:09:56,442 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:09:56,452 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:09:56,467 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8745-8756] [2023-11-25 00:09:56,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:09:56,729 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:09:56,733 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:09:56,733 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:09:56,734 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:09:56,734 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:09:56,734 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:09:56,734 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:09:56,734 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:09:56,735 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:09:56,735 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:09:56,735 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:09:56,735 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:09:56,735 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:09:56,735 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:09:56,735 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:09:56,736 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:09:56,736 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:09:56,736 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:09:56,744 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:09:56,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:56 WrapperNode [2023-11-25 00:09:56,744 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:09:56,746 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:09:56,746 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:09:56,746 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:09:56,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:56" (1/1) ... [2023-11-25 00:09:56,908 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:56" (1/1) ... [2023-11-25 00:09:57,012 INFO L138 Inliner]: procedures = 690, calls = 2627, calls flagged for inlining = 63, calls inlined = 10, statements flattened = 869 [2023-11-25 00:09:57,013 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:09:57,014 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:09:57,014 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:09:57,014 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:09:57,024 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:56" (1/1) ... [2023-11-25 00:09:57,024 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:56" (1/1) ... [2023-11-25 00:09:57,044 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:56" (1/1) ... [2023-11-25 00:09:57,045 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:56" (1/1) ... [2023-11-25 00:09:57,089 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:56" (1/1) ... [2023-11-25 00:09:57,097 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:56" (1/1) ... [2023-11-25 00:09:57,104 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:56" (1/1) ... [2023-11-25 00:09:57,126 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:56" (1/1) ... [2023-11-25 00:09:57,136 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:09:57,137 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:09:57,137 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:09:57,137 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:09:57,138 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:56" (1/1) ... [2023-11-25 00:09:57,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:09:57,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d105564c-c9aa-4df4-ac8e-72a18ffea7cd/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:09:57,184 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d105564c-c9aa-4df4-ac8e-72a18ffea7cd/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:09:57,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d105564c-c9aa-4df4-ac8e-72a18ffea7cd/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:09:57,232 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-25 00:09:57,232 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-25 00:09:57,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:09:57,233 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-25 00:09:57,233 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-25 00:09:57,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-25 00:09:57,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-25 00:09:57,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-25 00:09:57,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:09:57,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:09:57,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:09:57,234 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-25 00:09:57,234 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-25 00:09:57,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:09:57,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:09:57,235 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-25 00:09:57,235 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-25 00:09:57,235 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-25 00:09:57,235 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-25 00:09:57,236 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-25 00:09:57,236 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-25 00:09:57,236 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-25 00:09:57,236 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-25 00:09:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:09:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-25 00:09:57,238 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2023-11-25 00:09:57,238 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2023-11-25 00:09:57,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-25 00:09:57,238 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-25 00:09:57,238 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-25 00:09:57,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-25 00:09:57,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:09:57,596 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:09:57,599 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:09:59,037 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:09:59,485 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:09:59,486 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-25 00:09:59,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:09:59 BoogieIcfgContainer [2023-11-25 00:09:59,487 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:09:59,491 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:09:59,491 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:09:59,495 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:09:59,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:09:53" (1/3) ... [2023-11-25 00:09:59,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4f7a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:09:59, skipping insertion in model container [2023-11-25 00:09:59,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:56" (2/3) ... [2023-11-25 00:09:59,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4f7a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:09:59, skipping insertion in model container [2023-11-25 00:09:59,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:09:59" (3/3) ... [2023-11-25 00:09:59,500 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_u8_harness_negated.i [2023-11-25 00:09:59,519 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:09:59,519 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:09:59,581 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:09:59,594 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@713cdb8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:09:59,594 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:09:59,598 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 53 states have internal predecessors, (62), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-25 00:09:59,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-25 00:09:59,609 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:09:59,610 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:09:59,610 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:09:59,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:09:59,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1135056023, now seen corresponding path program 1 times [2023-11-25 00:09:59,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:09:59,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906769359] [2023-11-25 00:09:59,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:09:59,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:10:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:15,176 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-25 00:10:15,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:10:15,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906769359] [2023-11-25 00:10:15,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906769359] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:10:15,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113040989] [2023-11-25 00:10:15,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:15,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:10:15,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d105564c-c9aa-4df4-ac8e-72a18ffea7cd/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:10:15,182 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d105564c-c9aa-4df4-ac8e-72a18ffea7cd/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:10:15,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d105564c-c9aa-4df4-ac8e-72a18ffea7cd/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:10:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:16,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 2573 conjuncts, 150 conjunts are in the unsatisfiable core [2023-11-25 00:10:16,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:16,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-25 00:10:16,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-25 00:10:16,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-25 00:10:17,157 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-25 00:10:17,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-25 00:10:17,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-25 00:10:17,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-25 00:10:20,267 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-25 00:10:20,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-25 00:10:20,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:10:20,310 INFO L349 Elim1Store]: treesize reduction 55, result has 1.8 percent of original size [2023-11-25 00:10:20,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 1 [2023-11-25 00:10:20,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:10:20,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2023-11-25 00:10:20,610 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-25 00:10:20,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-25 00:10:20,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-25 00:10:27,075 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-25 00:10:27,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 49 [2023-11-25 00:10:28,784 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-25 00:10:28,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 106 treesize of output 134 [2023-11-25 00:10:28,921 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:10:28,921 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:10:31,497 WARN L176 XnfTransformerHelper]: Simplifying conjunction of 56951 disjunctions. This might take some time...