./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_prev_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54e432b-2cd7-4b54-afb3-24d08924791c/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54e432b-2cd7-4b54-afb3-24d08924791c/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54e432b-2cd7-4b54-afb3-24d08924791c/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54e432b-2cd7-4b54-afb3-24d08924791c/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_prev_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54e432b-2cd7-4b54-afb3-24d08924791c/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54e432b-2cd7-4b54-afb3-24d08924791c/bin/uautomizer-verify-bycVGegfSx --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c9366fdd5d21c350c15a66da5c847539e77b568b4d6276b0911cc19e72422513 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:18:14,752 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:18:14,842 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54e432b-2cd7-4b54-afb3-24d08924791c/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-21 22:18:14,847 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:18:14,848 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:18:14,873 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:18:14,874 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:18:14,874 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:18:14,875 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:18:14,876 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:18:14,876 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:18:14,877 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:18:14,878 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:18:14,878 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:18:14,879 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:18:14,879 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:18:14,880 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:18:14,881 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:18:14,881 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:18:14,882 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:18:14,882 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:18:14,888 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:18:14,889 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:18:14,889 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:18:14,890 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:18:14,890 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:18:14,890 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:18:14,891 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:18:14,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:18:14,892 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:18:14,892 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:18:14,893 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:18:14,893 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:18:14,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:18:14,894 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:18:14,895 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:18:14,895 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:18:14,896 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:18:14,896 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:18:14,896 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_f54e432b-2cd7-4b54-afb3-24d08924791c/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54e432b-2cd7-4b54-afb3-24d08924791c/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9366fdd5d21c350c15a66da5c847539e77b568b4d6276b0911cc19e72422513 [2023-11-21 22:18:15,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:18:15,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:18:15,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:18:15,272 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:18:15,273 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:18:15,274 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54e432b-2cd7-4b54-afb3-24d08924791c/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/aws-c-common/aws_linked_list_prev_harness_negated.i [2023-11-21 22:18:18,429 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:18:18,988 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:18:18,989 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54e432b-2cd7-4b54-afb3-24d08924791c/sv-benchmarks/c/aws-c-common/aws_linked_list_prev_harness_negated.i [2023-11-21 22:18:19,031 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54e432b-2cd7-4b54-afb3-24d08924791c/bin/uautomizer-verify-bycVGegfSx/data/c830bf516/fca7ae7bb6bb4a8d9fa8b997b31a49ee/FLAG8c68b3f95 [2023-11-21 22:18:19,050 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54e432b-2cd7-4b54-afb3-24d08924791c/bin/uautomizer-verify-bycVGegfSx/data/c830bf516/fca7ae7bb6bb4a8d9fa8b997b31a49ee [2023-11-21 22:18:19,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:18:19,061 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:18:19,062 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:18:19,062 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:18:19,067 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:18:19,068 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:18:19" (1/1) ... [2023-11-21 22:18:19,069 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36c13dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:19, skipping insertion in model container [2023-11-21 22:18:19,069 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:18:19" (1/1) ... [2023-11-21 22:18:19,195 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:18:19,474 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_f54e432b-2cd7-4b54-afb3-24d08924791c/sv-benchmarks/c/aws-c-common/aws_linked_list_prev_harness_negated.i[4494,4507] [2023-11-21 22:18:19,482 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_f54e432b-2cd7-4b54-afb3-24d08924791c/sv-benchmarks/c/aws-c-common/aws_linked_list_prev_harness_negated.i[4554,4567] [2023-11-21 22:18:20,422 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:20,422 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:20,423 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:20,424 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:20,425 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:20,441 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:20,442 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:20,445 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:20,446 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:20,448 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:20,449 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:20,450 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:20,450 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:20,942 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 22:18:20,949 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 22:18:20,952 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 22:18:20,954 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 22:18:20,956 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 22:18:20,963 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 22:18:20,964 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 22:18:20,964 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 22:18:20,965 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 22:18:20,968 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 22:18:21,211 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:18:21,230 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:18:21,245 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_f54e432b-2cd7-4b54-afb3-24d08924791c/sv-benchmarks/c/aws-c-common/aws_linked_list_prev_harness_negated.i[4494,4507] [2023-11-21 22:18:21,246 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_f54e432b-2cd7-4b54-afb3-24d08924791c/sv-benchmarks/c/aws-c-common/aws_linked_list_prev_harness_negated.i[4554,4567] [2023-11-21 22:18:21,313 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:21,316 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:21,319 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:21,322 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:21,323 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:21,336 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:21,336 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:21,338 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:21,339 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:21,340 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:21,341 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:21,342 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:21,342 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:18:21,389 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 22:18:21,390 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 22:18:21,391 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 22:18:21,392 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 22:18:21,393 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 22:18:21,394 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 22:18:21,395 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 22:18:21,395 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 22:18:21,396 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 22:18:21,397 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 22:18:21,450 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:18:21,783 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:21,784 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:21,784 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:21,784 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:21,785 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:21,785 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:21,786 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:21,787 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:21,787 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:21,787 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:21,787 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:21,787 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:21,788 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:21,788 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:21,789 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:21,796 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:18:21,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:21 WrapperNode [2023-11-21 22:18:21,799 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:18:21,801 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:18:21,801 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:18:21,801 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:18:21,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:21" (1/1) ... [2023-11-21 22:18:21,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:21" (1/1) ... [2023-11-21 22:18:22,025 INFO L138 Inliner]: procedures = 678, calls = 1039, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 56 [2023-11-21 22:18:22,026 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:18:22,027 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:18:22,027 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:18:22,028 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:18:22,037 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:21" (1/1) ... [2023-11-21 22:18:22,038 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:21" (1/1) ... [2023-11-21 22:18:22,042 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:21" (1/1) ... [2023-11-21 22:18:22,059 INFO L187 HeapSplitter]: Split 17 memory accesses to 4 slices as follows [2, 5, 6, 4] [2023-11-21 22:18:22,060 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:21" (1/1) ... [2023-11-21 22:18:22,060 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:21" (1/1) ... [2023-11-21 22:18:22,074 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:21" (1/1) ... [2023-11-21 22:18:22,076 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:21" (1/1) ... [2023-11-21 22:18:22,094 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:21" (1/1) ... [2023-11-21 22:18:22,097 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:21" (1/1) ... [2023-11-21 22:18:22,103 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:18:22,104 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:18:22,105 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:18:22,105 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:18:22,114 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:21" (1/1) ... [2023-11-21 22:18:22,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:18:22,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54e432b-2cd7-4b54-afb3-24d08924791c/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:18:22,147 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54e432b-2cd7-4b54-afb3-24d08924791c/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:18:22,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54e432b-2cd7-4b54-afb3-24d08924791c/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:18:22,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:18:22,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 22:18:22,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 22:18:22,188 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2023-11-21 22:18:22,189 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2023-11-21 22:18:22,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:18:22,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-21 22:18:22,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-21 22:18:22,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-21 22:18:22,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-21 22:18:22,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:18:22,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:18:22,190 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 22:18:22,190 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 22:18:22,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:18:22,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-21 22:18:22,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-21 22:18:22,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-21 22:18:22,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-21 22:18:22,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-21 22:18:22,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-21 22:18:22,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-21 22:18:22,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-21 22:18:22,192 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2023-11-21 22:18:22,192 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2023-11-21 22:18:22,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:18:22,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:18:22,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 22:18:22,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 22:18:22,444 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:18:22,447 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:18:22,699 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:18:22,861 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:18:22,861 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:18:22,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:18:22 BoogieIcfgContainer [2023-11-21 22:18:22,864 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:18:22,870 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:18:22,870 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:18:22,874 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:18:22,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:18:19" (1/3) ... [2023-11-21 22:18:22,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3b2341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:18:22, skipping insertion in model container [2023-11-21 22:18:22,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:21" (2/3) ... [2023-11-21 22:18:22,880 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3b2341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:18:22, skipping insertion in model container [2023-11-21 22:18:22,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:18:22" (3/3) ... [2023-11-21 22:18:22,883 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_prev_harness_negated.i [2023-11-21 22:18:22,906 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:18:22,906 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:18:22,948 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:18:22,955 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=PETRI_NET, 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;@4642df32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:18:22,955 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:18:22,959 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-21 22:18:22,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 22:18:22,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:18:22,968 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:22,969 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:18:22,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:22,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1904282237, now seen corresponding path program 1 times [2023-11-21 22:18:22,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:22,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547563376] [2023-11-21 22:18:22,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:22,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:18:23,380 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:18:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:18:23,566 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:18:23,574 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:18:23,575 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 22:18:23,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:18:23,586 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-21 22:18:23,592 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:18:23,616 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret341 could not be translated [2023-11-21 22:18:23,617 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret341 could not be translated [2023-11-21 22:18:23,618 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret343 could not be translated [2023-11-21 22:18:23,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:18:23 BoogieIcfgContainer [2023-11-21 22:18:23,630 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:18:23,633 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:18:23,633 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:18:23,633 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:18:23,634 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:18:22" (3/4) ... [2023-11-21 22:18:23,635 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-21 22:18:23,651 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret341 could not be translated [2023-11-21 22:18:23,652 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret341 could not be translated [2023-11-21 22:18:23,654 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret343 could not be translated [2023-11-21 22:18:23,709 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54e432b-2cd7-4b54-afb3-24d08924791c/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 22:18:23,715 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:18:23,719 INFO L158 Benchmark]: Toolchain (without parser) took 4655.47ms. Allocated memory was 163.6MB in the beginning and 251.7MB in the end (delta: 88.1MB). Free memory was 127.5MB in the beginning and 193.4MB in the end (delta: -65.9MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2023-11-21 22:18:23,719 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 163.6MB. Free memory is still 131.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:18:23,720 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2737.57ms. Allocated memory is still 163.6MB. Free memory was 126.9MB in the beginning and 64.5MB in the end (delta: 62.4MB). Peak memory consumption was 96.6MB. Max. memory is 16.1GB. [2023-11-21 22:18:23,720 INFO L158 Benchmark]: Boogie Procedure Inliner took 225.57ms. Allocated memory is still 163.6MB. Free memory was 64.5MB in the beginning and 115.8MB in the end (delta: -51.3MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2023-11-21 22:18:23,720 INFO L158 Benchmark]: Boogie Preprocessor took 77.04ms. Allocated memory is still 163.6MB. Free memory was 115.8MB in the beginning and 111.7MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 22:18:23,721 INFO L158 Benchmark]: RCFGBuilder took 759.50ms. Allocated memory is still 163.6MB. Free memory was 111.7MB in the beginning and 82.3MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-21 22:18:23,721 INFO L158 Benchmark]: TraceAbstraction took 760.94ms. Allocated memory was 163.6MB in the beginning and 251.7MB in the end (delta: 88.1MB). Free memory was 81.4MB in the beginning and 195.5MB in the end (delta: -114.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-11-21 22:18:23,722 INFO L158 Benchmark]: Witness Printer took 82.49ms. Allocated memory is still 251.7MB. Free memory was 195.5MB in the beginning and 193.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:18:23,724 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 163.6MB. Free memory is still 131.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2737.57ms. Allocated memory is still 163.6MB. Free memory was 126.9MB in the beginning and 64.5MB in the end (delta: 62.4MB). Peak memory consumption was 96.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 225.57ms. Allocated memory is still 163.6MB. Free memory was 64.5MB in the beginning and 115.8MB in the end (delta: -51.3MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.04ms. Allocated memory is still 163.6MB. Free memory was 115.8MB in the beginning and 111.7MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 759.50ms. Allocated memory is still 163.6MB. Free memory was 111.7MB in the beginning and 82.3MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 760.94ms. Allocated memory was 163.6MB in the beginning and 251.7MB in the end (delta: 88.1MB). Free memory was 81.4MB in the beginning and 195.5MB in the end (delta: -114.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 82.49ms. Allocated memory is still 251.7MB. Free memory was 195.5MB in the beginning and 193.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret341 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret341 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret343 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret341 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret341 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret343 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 223]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L6903-L6908] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6903-L6908] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6903-L6908] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6903-L6908] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6903-L6908] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6903-L6908] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L7328] static __thread int tl_last_error = 0; [L7361] CALL aws_linked_list_prev_harness() [L7346] struct aws_linked_list_node node; [L7347] struct aws_linked_list_node before; [L7350] node.prev = &before [L7351] before.next = &node [L7354] CALL aws_linked_list_prev(&node) [L4849] CALL, EXPR aws_linked_list_node_prev_is_valid(node) VAL [node={7:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4731] EXPR node && node->prev [L4731] EXPR node && node->prev [L4731] EXPR node->prev [L4731] EXPR node && node->prev [L4731] EXPR node && node->prev && node->prev->next == node [L4731] EXPR node && node->prev && node->prev->next == node [L4731] EXPR node->prev [L4731] EXPR node->prev->next [L4731] EXPR node && node->prev && node->prev->next == node [L4731] return node && node->prev && node->prev->next == node; [L4849] RET, EXPR aws_linked_list_node_prev_is_valid(node) VAL [node={7:0}, node={7:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4849] CALL assume_abort_if_not((aws_linked_list_node_prev_is_valid(node))) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L211] COND FALSE !(!cond) [L4849] RET assume_abort_if_not((aws_linked_list_node_prev_is_valid(node))) VAL [node={7:0}, node={7:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4850] EXPR node->prev [L4850] struct aws_linked_list_node *rval = node->prev; [L4851] CALL, EXPR aws_linked_list_node_prev_is_valid(node) VAL [node={7:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4731] EXPR node && node->prev [L4731] EXPR node && node->prev [L4731] EXPR node->prev [L4731] EXPR node && node->prev [L4731] EXPR node && node->prev && node->prev->next == node [L4731] EXPR node && node->prev && node->prev->next == node [L4731] EXPR node->prev [L4731] EXPR node->prev->next [L4731] EXPR node && node->prev && node->prev->next == node [L4731] return node && node->prev && node->prev->next == node; [L4851] RET, EXPR aws_linked_list_node_prev_is_valid(node) VAL [node={7:0}, node={7:0}, rval={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4851] CALL __VERIFIER_assert(!((aws_linked_list_node_prev_is_valid(node)))) VAL [\old(cond)=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L223] COND TRUE !cond VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L223] reach_error() VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-21 22:18:23,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54e432b-2cd7-4b54-afb3-24d08924791c/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE