./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_88e56018-9389-4fef-b7e8-2c86c4821f97/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e56018-9389-4fef-b7e8-2c86c4821f97/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e56018-9389-4fef-b7e8-2c86c4821f97/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e56018-9389-4fef-b7e8-2c86c4821f97/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e56018-9389-4fef-b7e8-2c86c4821f97/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e56018-9389-4fef-b7e8-2c86c4821f97/bin/utaipan-verify-NcY6lQBIFX --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 00ec05a25160d25197cac7f53dac55ccf03fc65cedd95c88bf0c5d8d545dbe6e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:47:43,525 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:47:43,603 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e56018-9389-4fef-b7e8-2c86c4821f97/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:47:43,607 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:47:43,608 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:47:43,636 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:47:43,636 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:47:43,637 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:47:43,638 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:47:43,638 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:47:43,639 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:47:43,639 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:47:43,640 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:47:43,640 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:47:43,641 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:47:43,642 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:47:43,642 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:47:43,660 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:47:43,661 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:47:43,662 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:47:43,666 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:47:43,667 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:47:43,667 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:47:43,668 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:47:43,669 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:47:43,669 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:47:43,670 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:47:43,670 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:47:43,671 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:47:43,671 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:47:43,672 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:47:43,673 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:47:43,674 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:47:43,674 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:47:43,674 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:47:43,674 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:47:43,675 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:47:43,675 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:47:43,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:47:43,676 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:47:43,676 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:47:43,676 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:47:43,677 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_88e56018-9389-4fef-b7e8-2c86c4821f97/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e56018-9389-4fef-b7e8-2c86c4821f97/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00ec05a25160d25197cac7f53dac55ccf03fc65cedd95c88bf0c5d8d545dbe6e [2023-11-12 00:47:44,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:47:44,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:47:44,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:47:44,044 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:47:44,045 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:47:44,046 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e56018-9389-4fef-b7e8-2c86c4821f97/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness_negated.i [2023-11-12 00:47:47,266 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:47:47,856 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:47:47,858 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e56018-9389-4fef-b7e8-2c86c4821f97/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness_negated.i [2023-11-12 00:47:47,906 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e56018-9389-4fef-b7e8-2c86c4821f97/bin/utaipan-verify-NcY6lQBIFX/data/71809167e/8a52455f767c419cab22d61835febee5/FLAG95f0997fb [2023-11-12 00:47:47,923 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e56018-9389-4fef-b7e8-2c86c4821f97/bin/utaipan-verify-NcY6lQBIFX/data/71809167e/8a52455f767c419cab22d61835febee5 [2023-11-12 00:47:47,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:47:47,933 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:47:47,937 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:47:47,937 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:47:47,943 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:47:47,943 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:47:47" (1/1) ... [2023-11-12 00:47:47,944 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f9919b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:47, skipping insertion in model container [2023-11-12 00:47:47,945 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:47:47" (1/1) ... [2023-11-12 00:47:48,051 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:47:48,404 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_88e56018-9389-4fef-b7e8-2c86c4821f97/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness_negated.i[4494,4507] [2023-11-12 00:47:48,413 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_88e56018-9389-4fef-b7e8-2c86c4821f97/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness_negated.i[4554,4567] [2023-11-12 00:47:49,497 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:47:49,498 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:47:49,499 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:47:49,500 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:47:49,501 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:47:49,516 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:47:49,517 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:47:49,519 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:47:49,520 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:47:49,523 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:47:49,524 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:47:49,525 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:47:49,526 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:47:50,026 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:47:50,027 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:47:50,029 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:47:50,030 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:47:50,032 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:47:50,033 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:47:50,034 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:47:50,035 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:47:50,036 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:47:50,036 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:47:50,313 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:47:50,380 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:47:50,406 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_88e56018-9389-4fef-b7e8-2c86c4821f97/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness_negated.i[4494,4507] [2023-11-12 00:47:50,407 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_88e56018-9389-4fef-b7e8-2c86c4821f97/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness_negated.i[4554,4567] [2023-11-12 00:47:50,482 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:47:50,483 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:47:50,483 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:47:50,484 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:47:50,484 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:47:50,496 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:47:50,497 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:47:50,498 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:47:50,499 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:47:50,501 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:47:50,502 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:47:50,502 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:47:50,503 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:47:50,547 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:47:50,548 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:47:50,549 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:47:50,550 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:47:50,551 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:47:50,552 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:47:50,553 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:47:50,553 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:47:50,554 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:47:50,555 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:47:50,598 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:47:50,807 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:47:50,808 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:47:50,808 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:47:50,808 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:47:50,808 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:47:50,808 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:47:50,808 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:47:50,809 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:47:50,809 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:47:50,809 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:47:50,809 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:47:50,809 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:47:50,810 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:47:50,810 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:47:50,810 WARN L672 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:47:50,818 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:47:50,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:50 WrapperNode [2023-11-12 00:47:50,819 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:47:50,820 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:47:50,820 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:47:50,820 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:47:50,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:50" (1/1) ... [2023-11-12 00:47:50,905 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:50" (1/1) ... [2023-11-12 00:47:50,957 INFO L138 Inliner]: procedures = 678, calls = 1039, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 56 [2023-11-12 00:47:50,958 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:47:50,961 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:47:50,961 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:47:50,963 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:47:50,972 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:50" (1/1) ... [2023-11-12 00:47:50,973 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:50" (1/1) ... [2023-11-12 00:47:50,983 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:50" (1/1) ... [2023-11-12 00:47:50,984 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:50" (1/1) ... [2023-11-12 00:47:51,005 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:50" (1/1) ... [2023-11-12 00:47:51,015 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:50" (1/1) ... [2023-11-12 00:47:51,022 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:50" (1/1) ... [2023-11-12 00:47:51,034 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:50" (1/1) ... [2023-11-12 00:47:51,039 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:47:51,043 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:47:51,043 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:47:51,043 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:47:51,044 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:50" (1/1) ... [2023-11-12 00:47:51,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:47:51,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e56018-9389-4fef-b7e8-2c86c4821f97/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:47:51,077 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e56018-9389-4fef-b7e8-2c86c4821f97/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:47:51,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e56018-9389-4fef-b7e8-2c86c4821f97/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:47:51,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:47:51,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:47:51,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:47:51,124 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2023-11-12 00:47:51,124 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2023-11-12 00:47:51,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:47:51,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:47:51,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:47:51,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:47:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:47:51,125 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:47:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:47:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:47:51,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:47:51,126 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2023-11-12 00:47:51,126 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2023-11-12 00:47:51,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:47:51,428 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:47:51,430 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:47:51,602 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:47:51,738 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:47:51,738 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:47:51,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:47:51 BoogieIcfgContainer [2023-11-12 00:47:51,741 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:47:51,744 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:47:51,744 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:47:51,748 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:47:51,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:47:47" (1/3) ... [2023-11-12 00:47:51,749 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4b84db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:47:51, skipping insertion in model container [2023-11-12 00:47:51,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:50" (2/3) ... [2023-11-12 00:47:51,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4b84db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:47:51, skipping insertion in model container [2023-11-12 00:47:51,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:47:51" (3/3) ... [2023-11-12 00:47:51,751 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_next_harness_negated.i [2023-11-12 00:47:51,772 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:47:51,772 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:47:51,822 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:47:51,828 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;@69478f95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:47:51,829 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:47:51,833 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) [2023-11-12 00:47:51,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-12 00:47:51,841 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:47:51,842 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:47:51,843 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:47:51,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:47:51,848 INFO L85 PathProgramCache]: Analyzing trace with hash 133471204, now seen corresponding path program 1 times [2023-11-12 00:47:51,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:47:51,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055244150] [2023-11-12 00:47:51,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:47:51,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:47:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:47:52,141 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:47:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:47:52,321 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:47:52,322 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:47:52,324 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 00:47:52,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:47:52,331 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-12 00:47:52,336 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:47:52,353 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret336 could not be translated [2023-11-12 00:47:52,355 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret336 could not be translated [2023-11-12 00:47:52,356 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret338 could not be translated [2023-11-12 00:47:52,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:47:52 BoogieIcfgContainer [2023-11-12 00:47:52,364 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:47:52,365 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:47:52,365 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:47:52,366 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:47:52,366 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:47:51" (3/4) ... [2023-11-12 00:47:52,367 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-12 00:47:52,373 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret336 could not be translated [2023-11-12 00:47:52,374 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret336 could not be translated [2023-11-12 00:47:52,374 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret338 could not be translated [2023-11-12 00:47:52,412 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e56018-9389-4fef-b7e8-2c86c4821f97/bin/utaipan-verify-NcY6lQBIFX/witness.graphml [2023-11-12 00:47:52,412 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:47:52,413 INFO L158 Benchmark]: Toolchain (without parser) took 4479.83ms. Allocated memory was 140.5MB in the beginning and 199.2MB in the end (delta: 58.7MB). Free memory was 101.6MB in the beginning and 81.7MB in the end (delta: 19.8MB). Peak memory consumption was 81.6MB. Max. memory is 16.1GB. [2023-11-12 00:47:52,414 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 140.5MB. Free memory is still 109.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:47:52,414 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2882.21ms. Allocated memory was 140.5MB in the beginning and 199.2MB in the end (delta: 58.7MB). Free memory was 101.6MB in the beginning and 154.1MB in the end (delta: -52.5MB). Peak memory consumption was 81.6MB. Max. memory is 16.1GB. [2023-11-12 00:47:52,415 INFO L158 Benchmark]: Boogie Procedure Inliner took 138.58ms. Allocated memory is still 199.2MB. Free memory was 154.1MB in the beginning and 148.8MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-12 00:47:52,415 INFO L158 Benchmark]: Boogie Preprocessor took 81.29ms. Allocated memory is still 199.2MB. Free memory was 148.8MB in the beginning and 146.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:47:52,416 INFO L158 Benchmark]: RCFGBuilder took 698.44ms. Allocated memory is still 199.2MB. Free memory was 146.7MB in the beginning and 116.3MB in the end (delta: 30.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-12 00:47:52,417 INFO L158 Benchmark]: TraceAbstraction took 620.79ms. Allocated memory is still 199.2MB. Free memory was 116.3MB in the beginning and 84.9MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-11-12 00:47:52,417 INFO L158 Benchmark]: Witness Printer took 46.91ms. Allocated memory is still 199.2MB. Free memory was 83.8MB in the beginning and 81.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:47:52,420 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 140.5MB. Free memory is still 109.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2882.21ms. Allocated memory was 140.5MB in the beginning and 199.2MB in the end (delta: 58.7MB). Free memory was 101.6MB in the beginning and 154.1MB in the end (delta: -52.5MB). Peak memory consumption was 81.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 138.58ms. Allocated memory is still 199.2MB. Free memory was 154.1MB in the beginning and 148.8MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 81.29ms. Allocated memory is still 199.2MB. Free memory was 148.8MB in the beginning and 146.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 698.44ms. Allocated memory is still 199.2MB. Free memory was 146.7MB in the beginning and 116.3MB in the end (delta: 30.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 620.79ms. Allocated memory is still 199.2MB. Free memory was 116.3MB in the beginning and 84.9MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 46.91ms. Allocated memory is still 199.2MB. Free memory was 83.8MB in the beginning and 81.7MB 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~ret336 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret336 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret338 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret336 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret336 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret338 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, }; [L7328] static __thread int tl_last_error = 0; [L7361] CALL aws_linked_list_next_harness() [L7346] struct aws_linked_list_node node; [L7347] struct aws_linked_list_node after; [L7350] node.next = &after [L7351] after.prev = &node [L7354] CALL aws_linked_list_next(&node) [L4837] CALL, EXPR aws_linked_list_node_next_is_valid(node) VAL [node={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4720] EXPR node && node->next [L4720] EXPR node->next [L4720] EXPR node && node->next [L4720] EXPR node && node->next && node->next->prev == node [L4720] EXPR node->next [L4720] EXPR node->next->prev [L4720] EXPR node && node->next && node->next->prev == node [L4720] return node && node->next && node->next->prev == node; [L4837] RET, EXPR aws_linked_list_node_next_is_valid(node) VAL [node={6:0}, node={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4837] CALL assume_abort_if_not((aws_linked_list_node_next_is_valid(node))) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L211] COND FALSE !(!cond) [L4837] RET assume_abort_if_not((aws_linked_list_node_next_is_valid(node))) VAL [node={6:0}, node={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4838] EXPR node->next [L4838] struct aws_linked_list_node *rval = node->next; [L4839] CALL, EXPR aws_linked_list_node_next_is_valid(node) VAL [node={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4720] EXPR node && node->next [L4720] EXPR node->next [L4720] EXPR node && node->next [L4720] EXPR node && node->next && node->next->prev == node [L4720] EXPR node->next [L4720] EXPR node->next->prev [L4720] EXPR node && node->next && node->next->prev == node [L4720] return node && node->next && node->next->prev == node; [L4839] RET, EXPR aws_linked_list_node_next_is_valid(node) VAL [node={6:0}, node={6:0}, rval={7:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4839] CALL __VERIFIER_assert(!((aws_linked_list_node_next_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: 0.5s, 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, 0.2s 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! [2023-11-12 00:47:52,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e56018-9389-4fef-b7e8-2c86c4821f97/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, 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