./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 30e01a73 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_6d028a3e-8b17-4c50-a3a0-c3a0d962a1c6/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d028a3e-8b17-4c50-a3a0-c3a0d962a1c6/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d028a3e-8b17-4c50-a3a0-c3a0d962a1c6/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d028a3e-8b17-4c50-a3a0-c3a0d962a1c6/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.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_6d028a3e-8b17-4c50-a3a0-c3a0d962a1c6/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d028a3e-8b17-4c50-a3a0-c3a0d962a1c6/bin/utaipan-verify-mE87zJ7Ire --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 c9366fdd5d21c350c15a66da5c847539e77b568b4d6276b0911cc19e72422513 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:37:55,232 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:37:55,305 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d028a3e-8b17-4c50-a3a0-c3a0d962a1c6/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 20:37:55,313 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:37:55,313 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:37:55,354 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:37:55,355 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:37:55,356 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:37:55,362 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:37:55,367 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:37:55,368 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:37:55,369 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:37:55,369 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:37:55,371 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:37:55,372 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:37:55,372 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:37:55,372 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:37:55,373 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:37:55,373 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:37:55,374 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:37:55,374 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:37:55,375 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:37:55,376 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:37:55,376 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:37:55,377 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:37:55,377 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:37:55,378 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:37:55,378 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:37:55,378 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:37:55,379 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:37:55,380 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:37:55,381 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:37:55,381 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:37:55,381 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:37:55,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:37:55,382 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:37:55,382 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:37:55,382 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:37:55,383 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:37:55,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:37:55,383 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:37:55,384 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:37:55,384 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:37:55,384 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:37:55,385 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_6d028a3e-8b17-4c50-a3a0-c3a0d962a1c6/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d028a3e-8b17-4c50-a3a0-c3a0d962a1c6/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9366fdd5d21c350c15a66da5c847539e77b568b4d6276b0911cc19e72422513 [2023-11-23 20:37:55,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:37:55,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:37:55,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:37:55,749 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:37:55,749 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:37:55,751 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d028a3e-8b17-4c50-a3a0-c3a0d962a1c6/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/aws-c-common/aws_linked_list_prev_harness_negated.i [2023-11-23 20:37:58,967 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:37:59,465 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:37:59,465 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d028a3e-8b17-4c50-a3a0-c3a0d962a1c6/sv-benchmarks/c/aws-c-common/aws_linked_list_prev_harness_negated.i [2023-11-23 20:37:59,513 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d028a3e-8b17-4c50-a3a0-c3a0d962a1c6/bin/utaipan-verify-mE87zJ7Ire/data/af60f8cbc/31ecd3df6cd64a96807757d6d9890056/FLAG2f657bd89 [2023-11-23 20:37:59,532 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d028a3e-8b17-4c50-a3a0-c3a0d962a1c6/bin/utaipan-verify-mE87zJ7Ire/data/af60f8cbc/31ecd3df6cd64a96807757d6d9890056 [2023-11-23 20:37:59,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:37:59,541 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:37:59,548 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:37:59,548 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:37:59,554 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:37:59,555 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:37:59" (1/1) ... [2023-11-23 20:37:59,558 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@746e85f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:59, skipping insertion in model container [2023-11-23 20:37:59,558 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:37:59" (1/1) ... [2023-11-23 20:37:59,671 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:37:59,979 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_6d028a3e-8b17-4c50-a3a0-c3a0d962a1c6/sv-benchmarks/c/aws-c-common/aws_linked_list_prev_harness_negated.i[4494,4507] [2023-11-23 20:37:59,988 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_6d028a3e-8b17-4c50-a3a0-c3a0d962a1c6/sv-benchmarks/c/aws-c-common/aws_linked_list_prev_harness_negated.i[4554,4567] [2023-11-23 20:38:01,142 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:38:01,143 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:38:01,143 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:38:01,145 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:38:01,146 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:38:01,164 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:38:01,165 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:38:01,167 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:38:01,168 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:38:01,172 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:38:01,182 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:38:01,183 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:38:01,183 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:38:01,693 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 20:38:01,695 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 20:38:01,696 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 20:38:01,698 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 20:38:01,700 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 20:38:01,701 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 20:38:01,701 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 20:38:01,702 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 20:38:01,703 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 20:38:01,704 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 20:38:01,914 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:38:01,941 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:38:01,968 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_6d028a3e-8b17-4c50-a3a0-c3a0d962a1c6/sv-benchmarks/c/aws-c-common/aws_linked_list_prev_harness_negated.i[4494,4507] [2023-11-23 20:38:01,969 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_6d028a3e-8b17-4c50-a3a0-c3a0d962a1c6/sv-benchmarks/c/aws-c-common/aws_linked_list_prev_harness_negated.i[4554,4567] [2023-11-23 20:38:02,058 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:38:02,061 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:38:02,065 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:38:02,066 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:38:02,067 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:38:02,085 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:38:02,096 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:38:02,098 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:38:02,098 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:38:02,099 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:38:02,103 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:38:02,103 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:38:02,104 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:38:02,161 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 20:38:02,162 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 20:38:02,163 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 20:38:02,164 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 20:38:02,165 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 20:38:02,165 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 20:38:02,166 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 20:38:02,167 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 20:38:02,167 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 20:38:02,168 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 20:38:02,227 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:38:02,571 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:38:02,571 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:38:02,571 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:38:02,571 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:38:02,572 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:38:02,572 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:38:02,572 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:38:02,573 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:38:02,573 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:38:02,573 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:38:02,573 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:38:02,574 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:38:02,574 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:38:02,574 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:38:02,575 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:38:02,582 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:38:02,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:02 WrapperNode [2023-11-23 20:38:02,582 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:38:02,583 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:38:02,583 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:38:02,583 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:38:02,589 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:02" (1/1) ... [2023-11-23 20:38:02,662 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:02" (1/1) ... [2023-11-23 20:38:02,700 INFO L138 Inliner]: procedures = 678, calls = 1039, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 56 [2023-11-23 20:38:02,700 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:38:02,701 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:38:02,701 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:38:02,701 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:38:02,712 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:02" (1/1) ... [2023-11-23 20:38:02,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:02" (1/1) ... [2023-11-23 20:38:02,717 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:02" (1/1) ... [2023-11-23 20:38:02,717 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:02" (1/1) ... [2023-11-23 20:38:02,735 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:02" (1/1) ... [2023-11-23 20:38:02,749 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:02" (1/1) ... [2023-11-23 20:38:02,754 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:02" (1/1) ... [2023-11-23 20:38:02,756 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:02" (1/1) ... [2023-11-23 20:38:02,777 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:38:02,778 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:38:02,778 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:38:02,778 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:38:02,779 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:02" (1/1) ... [2023-11-23 20:38:02,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:38:02,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d028a3e-8b17-4c50-a3a0-c3a0d962a1c6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:38:02,827 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d028a3e-8b17-4c50-a3a0-c3a0d962a1c6/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:38:02,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d028a3e-8b17-4c50-a3a0-c3a0d962a1c6/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:38:02,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:38:02,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 20:38:02,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 20:38:02,877 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2023-11-23 20:38:02,877 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2023-11-23 20:38:02,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:38:02,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 20:38:02,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:38:02,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:38:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:38:02,878 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:38:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:38:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 20:38:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 20:38:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2023-11-23 20:38:02,879 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2023-11-23 20:38:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:38:03,185 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:38:03,187 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:38:03,354 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:38:03,496 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:38:03,497 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:38:03,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:38:03 BoogieIcfgContainer [2023-11-23 20:38:03,498 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:38:03,501 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:38:03,501 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:38:03,507 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:38:03,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:37:59" (1/3) ... [2023-11-23 20:38:03,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3133bf09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:38:03, skipping insertion in model container [2023-11-23 20:38:03,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:02" (2/3) ... [2023-11-23 20:38:03,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3133bf09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:38:03, skipping insertion in model container [2023-11-23 20:38:03,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:38:03" (3/3) ... [2023-11-23 20:38:03,511 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_prev_harness_negated.i [2023-11-23 20:38:03,564 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:38:03,565 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:38:03,618 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:38:03,626 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;@1609de47, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:38:03,626 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:38:03,631 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) [2023-11-23 20:38:03,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 20:38:03,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:38:03,641 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:38:03,641 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:38:03,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:38:03,647 INFO L85 PathProgramCache]: Analyzing trace with hash 846701445, now seen corresponding path program 1 times [2023-11-23 20:38:03,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:38:03,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304147276] [2023-11-23 20:38:03,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:38:03,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:38:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:38:03,954 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:38:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:38:04,156 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 20:38:04,158 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 20:38:04,159 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 20:38:04,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:38:04,173 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 20:38:04,178 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 20:38:04,205 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret341 could not be translated [2023-11-23 20:38:04,206 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret341 could not be translated [2023-11-23 20:38:04,207 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret343 could not be translated [2023-11-23 20:38:04,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 08:38:04 BoogieIcfgContainer [2023-11-23 20:38:04,223 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 20:38:04,225 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:38:04,226 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:38:04,226 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:38:04,227 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:38:03" (3/4) ... [2023-11-23 20:38:04,228 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-23 20:38:04,245 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret341 could not be translated [2023-11-23 20:38:04,246 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret341 could not be translated [2023-11-23 20:38:04,248 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret343 could not be translated [2023-11-23 20:38:04,297 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d028a3e-8b17-4c50-a3a0-c3a0d962a1c6/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 20:38:04,297 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:38:04,298 INFO L158 Benchmark]: Toolchain (without parser) took 4757.33ms. Allocated memory was 174.1MB in the beginning and 226.5MB in the end (delta: 52.4MB). Free memory was 121.9MB in the beginning and 146.3MB in the end (delta: -24.3MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. [2023-11-23 20:38:04,299 INFO L158 Benchmark]: CDTParser took 1.17ms. Allocated memory is still 109.1MB. Free memory was 60.4MB in the beginning and 60.3MB in the end (delta: 151.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:38:04,300 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3034.88ms. Allocated memory is still 174.1MB. Free memory was 121.5MB in the beginning and 102.5MB in the end (delta: 19.0MB). Peak memory consumption was 62.3MB. Max. memory is 16.1GB. [2023-11-23 20:38:04,300 INFO L158 Benchmark]: Boogie Procedure Inliner took 117.43ms. Allocated memory is still 174.1MB. Free memory was 102.5MB in the beginning and 97.4MB in the end (delta: 5.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 20:38:04,301 INFO L158 Benchmark]: Boogie Preprocessor took 75.87ms. Allocated memory is still 174.1MB. Free memory was 97.4MB in the beginning and 94.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:38:04,301 INFO L158 Benchmark]: RCFGBuilder took 720.96ms. Allocated memory is still 174.1MB. Free memory was 94.5MB in the beginning and 66.0MB in the end (delta: 28.5MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-23 20:38:04,302 INFO L158 Benchmark]: TraceAbstraction took 722.02ms. Allocated memory was 174.1MB in the beginning and 226.5MB in the end (delta: 52.4MB). Free memory was 65.1MB in the beginning and 148.4MB in the end (delta: -83.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:38:04,302 INFO L158 Benchmark]: Witness Printer took 71.86ms. Allocated memory is still 226.5MB. Free memory was 148.4MB in the beginning and 146.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:38:04,305 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.17ms. Allocated memory is still 109.1MB. Free memory was 60.4MB in the beginning and 60.3MB in the end (delta: 151.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3034.88ms. Allocated memory is still 174.1MB. Free memory was 121.5MB in the beginning and 102.5MB in the end (delta: 19.0MB). Peak memory consumption was 62.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 117.43ms. Allocated memory is still 174.1MB. Free memory was 102.5MB in the beginning and 97.4MB in the end (delta: 5.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.87ms. Allocated memory is still 174.1MB. Free memory was 97.4MB in the beginning and 94.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 720.96ms. Allocated memory is still 174.1MB. Free memory was 94.5MB in the beginning and 66.0MB in the end (delta: 28.5MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 722.02ms. Allocated memory was 174.1MB in the beginning and 226.5MB in the end (delta: 52.4MB). Free memory was 65.1MB in the beginning and 148.4MB in the end (delta: -83.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 71.86ms. Allocated memory is still 226.5MB. Free memory was 148.4MB in the beginning and 146.3MB 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, }; [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->prev [L4731] EXPR node && node->prev [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->prev [L4731] EXPR node && node->prev [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: 0.6s, 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! [2023-11-23 20:38:04,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d028a3e-8b17-4c50-a3a0-c3a0d962a1c6/bin/utaipan-verify-mE87zJ7Ire/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