./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 e7bb482b 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_ca5c2761-a9f8-4a9e-818a-714f5474573a/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5c2761-a9f8-4a9e-818a-714f5474573a/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5c2761-a9f8-4a9e-818a-714f5474573a/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5c2761-a9f8-4a9e-818a-714f5474573a/bin/uautomizer-verify-WvqO1wxjHP/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_ca5c2761-a9f8-4a9e-818a-714f5474573a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5c2761-a9f8-4a9e-818a-714f5474573a/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 49e1717131d7420d39b9655ef16db35c741592e9cf98a9b864b82d9bd38d2f4a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:11:37,560 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:11:37,709 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5c2761-a9f8-4a9e-818a-714f5474573a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-06 23:11:37,714 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:11:37,715 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:11:37,746 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:11:37,747 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:11:37,748 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:11:37,749 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:11:37,750 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:11:37,751 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:11:37,752 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:11:37,753 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:11:37,754 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:11:37,754 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:11:37,755 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:11:37,756 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:11:37,757 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:11:37,757 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:11:37,758 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:11:37,759 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:11:37,765 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:11:37,765 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:11:37,766 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:11:37,767 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:11:37,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:11:37,768 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:11:37,769 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:11:37,769 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:11:37,774 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:11:37,775 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:11:37,776 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:11:37,776 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:11:37,777 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:11:37,777 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:11:37,778 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:11:37,778 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_ca5c2761-a9f8-4a9e-818a-714f5474573a/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5c2761-a9f8-4a9e-818a-714f5474573a/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 49e1717131d7420d39b9655ef16db35c741592e9cf98a9b864b82d9bd38d2f4a [2023-11-06 23:11:38,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:11:38,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:11:38,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:11:38,231 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:11:38,231 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:11:38,233 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5c2761-a9f8-4a9e-818a-714f5474573a/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/aws-c-common/aws_linked_list_prev_harness_negated.i [2023-11-06 23:11:42,198 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:11:42,978 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:11:42,978 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5c2761-a9f8-4a9e-818a-714f5474573a/sv-benchmarks/c/aws-c-common/aws_linked_list_prev_harness_negated.i [2023-11-06 23:11:43,066 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5c2761-a9f8-4a9e-818a-714f5474573a/bin/uautomizer-verify-WvqO1wxjHP/data/ede6b7314/379affa267c749419535dc7568e74a9e/FLAGe36c3b18b [2023-11-06 23:11:43,084 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5c2761-a9f8-4a9e-818a-714f5474573a/bin/uautomizer-verify-WvqO1wxjHP/data/ede6b7314/379affa267c749419535dc7568e74a9e [2023-11-06 23:11:43,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:11:43,090 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:11:43,092 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:11:43,092 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:11:43,099 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:11:43,100 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:11:43" (1/1) ... [2023-11-06 23:11:43,101 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b24b33f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:43, skipping insertion in model container [2023-11-06 23:11:43,102 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:11:43" (1/1) ... [2023-11-06 23:11:43,254 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:11:43,625 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_ca5c2761-a9f8-4a9e-818a-714f5474573a/sv-benchmarks/c/aws-c-common/aws_linked_list_prev_harness_negated.i[4494,4507] [2023-11-06 23:11:43,635 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_ca5c2761-a9f8-4a9e-818a-714f5474573a/sv-benchmarks/c/aws-c-common/aws_linked_list_prev_harness_negated.i[4554,4567] [2023-11-06 23:11:44,879 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:11:44,892 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:11:44,893 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:11:44,894 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:11:44,896 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:11:44,935 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:11:44,936 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:11:44,938 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:11:44,939 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:11:44,942 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:11:44,943 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:11:44,953 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:11:44,954 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:11:45,524 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-06 23:11:45,526 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-06 23:11:45,527 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-06 23:11:45,529 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-06 23:11:45,531 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-06 23:11:45,532 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-06 23:11:45,533 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-06 23:11:45,534 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-06 23:11:45,535 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-06 23:11:45,536 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-06 23:11:45,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:11:45,789 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:11:45,822 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_ca5c2761-a9f8-4a9e-818a-714f5474573a/sv-benchmarks/c/aws-c-common/aws_linked_list_prev_harness_negated.i[4494,4507] [2023-11-06 23:11:45,823 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_ca5c2761-a9f8-4a9e-818a-714f5474573a/sv-benchmarks/c/aws-c-common/aws_linked_list_prev_harness_negated.i[4554,4567] [2023-11-06 23:11:45,878 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:11:45,879 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:11:45,880 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:11:45,881 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:11:45,882 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:11:45,897 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:11:45,898 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:11:45,900 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:11:45,901 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:11:45,903 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:11:45,904 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:11:45,905 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:11:45,906 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:11:45,966 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-06 23:11:45,968 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-06 23:11:45,969 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-06 23:11:45,971 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-06 23:11:45,972 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-06 23:11:45,973 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-06 23:11:45,974 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-06 23:11:45,975 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-06 23:11:45,976 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-06 23:11:45,977 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-06 23:11:46,036 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:11:46,361 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:11:46,376 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:11:46,377 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:11:46,377 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:11:46,377 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:11:46,377 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:11:46,378 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:11:46,378 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:11:46,379 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:11:46,379 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:11:46,381 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:11:46,381 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:11:46,381 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:11:46,381 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:11:46,382 WARN L672 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:11:46,399 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:11:46,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:46 WrapperNode [2023-11-06 23:11:46,401 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:11:46,403 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:11:46,403 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:11:46,404 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:11:46,411 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:46" (1/1) ... [2023-11-06 23:11:46,531 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:46" (1/1) ... [2023-11-06 23:11:46,606 INFO L138 Inliner]: procedures = 678, calls = 1039, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 56 [2023-11-06 23:11:46,607 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:11:46,607 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:11:46,608 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:11:46,608 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:11:46,621 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:46" (1/1) ... [2023-11-06 23:11:46,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:46" (1/1) ... [2023-11-06 23:11:46,636 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:46" (1/1) ... [2023-11-06 23:11:46,636 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:46" (1/1) ... [2023-11-06 23:11:46,671 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:46" (1/1) ... [2023-11-06 23:11:46,689 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:46" (1/1) ... [2023-11-06 23:11:46,693 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:46" (1/1) ... [2023-11-06 23:11:46,696 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:46" (1/1) ... [2023-11-06 23:11:46,702 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:11:46,703 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:11:46,703 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:11:46,704 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:11:46,721 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:46" (1/1) ... [2023-11-06 23:11:46,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:11:46,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5c2761-a9f8-4a9e-818a-714f5474573a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:11:46,771 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5c2761-a9f8-4a9e-818a-714f5474573a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:11:46,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5c2761-a9f8-4a9e-818a-714f5474573a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:11:46,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:11:46,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-06 23:11:46,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-06 23:11:46,832 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2023-11-06 23:11:46,832 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2023-11-06 23:11:46,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:11:46,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 23:11:46,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:11:46,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:11:46,835 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 23:11:46,835 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 23:11:46,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:11:46,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 23:11:46,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 23:11:46,837 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2023-11-06 23:11:46,837 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2023-11-06 23:11:46,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:11:47,202 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:11:47,204 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:11:47,437 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:11:47,446 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:11:47,447 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 23:11:47,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:11:47 BoogieIcfgContainer [2023-11-06 23:11:47,450 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:11:47,499 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:11:47,499 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:11:47,504 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:11:47,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:11:43" (1/3) ... [2023-11-06 23:11:47,505 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7102a351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:11:47, skipping insertion in model container [2023-11-06 23:11:47,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:46" (2/3) ... [2023-11-06 23:11:47,506 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7102a351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:11:47, skipping insertion in model container [2023-11-06 23:11:47,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:11:47" (3/3) ... [2023-11-06 23:11:47,508 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_prev_harness_negated.i [2023-11-06 23:11:47,539 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:11:47,539 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 23:11:47,612 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:11:47,620 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=LoopsAndPotentialCycles, 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;@61eeeb32, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:11:47,621 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 23:11:47,626 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 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) [2023-11-06 23:11:47,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-06 23:11:47,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:11:47,639 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:11:47,640 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:11:47,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:47,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1117195627, now seen corresponding path program 1 times [2023-11-06 23:11:47,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:47,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188513119] [2023-11-06 23:11:47,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:47,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:48,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:11:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:48,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:11:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:48,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 23:11:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:48,307 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 23:11:48,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:11:48,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188513119] [2023-11-06 23:11:48,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188513119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:11:48,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:11:48,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:11:48,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888565729] [2023-11-06 23:11:48,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:11:48,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 23:11:48,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:11:48,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 23:11:48,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:11:48,369 INFO L87 Difference]: Start difference. First operand has 50 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 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) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 23:11:48,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:11:48,403 INFO L93 Difference]: Finished difference Result 94 states and 124 transitions. [2023-11-06 23:11:48,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 23:11:48,406 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2023-11-06 23:11:48,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:11:48,416 INFO L225 Difference]: With dead ends: 94 [2023-11-06 23:11:48,416 INFO L226 Difference]: Without dead ends: 45 [2023-11-06 23:11:48,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:11:48,424 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:11:48,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:11:48,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-06 23:11:48,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-11-06 23:11:48,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 29 states have internal predecessors, (33), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-06 23:11:48,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2023-11-06 23:11:48,474 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 28 [2023-11-06 23:11:48,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:11:48,476 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2023-11-06 23:11:48,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 23:11:48,477 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2023-11-06 23:11:48,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-06 23:11:48,479 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:11:48,480 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:11:48,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:11:48,480 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:11:48,481 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:48,482 INFO L85 PathProgramCache]: Analyzing trace with hash 96127273, now seen corresponding path program 1 times [2023-11-06 23:11:48,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:48,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687959271] [2023-11-06 23:11:48,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:48,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:11:48,683 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:11:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:11:48,843 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:11:48,844 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 23:11:48,847 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 23:11:48,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:11:48,853 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 23:11:48,857 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 23:11:48,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:11:48 BoogieIcfgContainer [2023-11-06 23:11:48,922 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 23:11:48,926 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 23:11:48,926 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 23:11:48,926 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 23:11:48,927 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:11:47" (3/4) ... [2023-11-06 23:11:48,929 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-06 23:11:49,006 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5c2761-a9f8-4a9e-818a-714f5474573a/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 23:11:49,006 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 23:11:49,007 INFO L158 Benchmark]: Toolchain (without parser) took 5917.60ms. Allocated memory was 157.3MB in the beginning and 211.8MB in the end (delta: 54.5MB). Free memory was 107.7MB in the beginning and 99.5MB in the end (delta: 8.2MB). Peak memory consumption was 62.2MB. Max. memory is 16.1GB. [2023-11-06 23:11:49,007 INFO L158 Benchmark]: CDTParser took 0.71ms. Allocated memory is still 109.1MB. Free memory is still 77.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:11:49,010 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3310.23ms. Allocated memory is still 157.3MB. Free memory was 107.7MB in the beginning and 89.4MB in the end (delta: 18.3MB). Peak memory consumption was 78.4MB. Max. memory is 16.1GB. [2023-11-06 23:11:49,011 INFO L158 Benchmark]: Boogie Procedure Inliner took 203.80ms. Allocated memory is still 157.3MB. Free memory was 89.4MB in the beginning and 83.8MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-06 23:11:49,011 INFO L158 Benchmark]: Boogie Preprocessor took 94.95ms. Allocated memory is still 157.3MB. Free memory was 83.8MB in the beginning and 81.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:11:49,012 INFO L158 Benchmark]: RCFGBuilder took 746.74ms. Allocated memory is still 157.3MB. Free memory was 81.1MB in the beginning and 61.7MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-06 23:11:49,013 INFO L158 Benchmark]: TraceAbstraction took 1423.39ms. Allocated memory is still 211.8MB. Free memory was 162.3MB in the beginning and 101.6MB in the end (delta: 60.7MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. [2023-11-06 23:11:49,014 INFO L158 Benchmark]: Witness Printer took 80.83ms. Allocated memory is still 211.8MB. Free memory was 101.6MB in the beginning and 99.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:11:49,016 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71ms. Allocated memory is still 109.1MB. Free memory is still 77.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3310.23ms. Allocated memory is still 157.3MB. Free memory was 107.7MB in the beginning and 89.4MB in the end (delta: 18.3MB). Peak memory consumption was 78.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 203.80ms. Allocated memory is still 157.3MB. Free memory was 89.4MB in the beginning and 83.8MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 94.95ms. Allocated memory is still 157.3MB. Free memory was 83.8MB in the beginning and 81.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 746.74ms. Allocated memory is still 157.3MB. Free memory was 81.1MB in the beginning and 61.7MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1423.39ms. Allocated memory is still 211.8MB. Free memory was 162.3MB in the beginning and 101.6MB in the end (delta: 60.7MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. * Witness Printer took 80.83ms. Allocated memory is still 211.8MB. Free memory was 101.6MB in the beginning and 99.5MB 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.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: [L6915-L6920] 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, }; [L7360] static __thread int tl_last_error = 0; VAL [s_can_fail_allocator_static={4:0}, tl_last_error=0] [L7393] CALL aws_linked_list_prev_harness() [L7378] struct aws_linked_list_node node; [L7379] struct aws_linked_list_node before; [L7382] node.prev = &before [L7383] before.next = &node [L7386] CALL aws_linked_list_prev(&node) [L4849] CALL, EXPR aws_linked_list_node_prev_is_valid(node) VAL [node={6:0}, 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 VAL [node && node->prev=1, node->prev={7:0}, node={6:0}, node={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [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 VAL [node && node->prev && node->prev->next == node=1, node && node->prev=1, node->prev->next={6:0}, node->prev={7:0}, node->prev={7:0}, node={6:0}, node={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4731] return node && node->prev && node->prev->next == node; [L4849] RET, EXPR aws_linked_list_node_prev_is_valid(node) VAL [aws_linked_list_node_prev_is_valid(node)=1, node={6:0}, node={6:0}, 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) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4849] RET assume_abort_if_not((aws_linked_list_node_prev_is_valid(node))) VAL [aws_linked_list_node_prev_is_valid(node)=1, node={6:0}, node={6:0}, 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={6:0}, 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 VAL [node && node->prev=1, node->prev={7:0}, node={6:0}, node={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [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 VAL [node && node->prev && node->prev->next == node=1, node && node->prev=1, node->prev->next={6:0}, node->prev={7:0}, node->prev={7:0}, node={6:0}, node={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4731] return node && node->prev && node->prev->next == node; [L4851] RET, EXPR aws_linked_list_node_prev_is_valid(node) VAL [aws_linked_list_node_prev_is_valid(node)=1, node={6:0}, node={6:0}, rval={7:0}, 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, 50 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 61 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 61 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 27 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 7/7 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! [2023-11-06 23:11:49,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5c2761-a9f8-4a9e-818a-714f5474573a/bin/uautomizer-verify-WvqO1wxjHP/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