./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_8f37fbda-2286-4752-953d-66c0a5c65b80/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f37fbda-2286-4752-953d-66c0a5c65b80/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f37fbda-2286-4752-953d-66c0a5c65b80/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f37fbda-2286-4752-953d-66c0a5c65b80/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f37fbda-2286-4752-953d-66c0a5c65b80/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f37fbda-2286-4752-953d-66c0a5c65b80/bin/uautomizer-uyxdKDjOR8 --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 3e8367033bd30dfa8871a8cc79785065b8ba832aaa85f1eca9c2c64bf38c1bb0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 12:12:51,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:12:51,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:12:51,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:12:51,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:12:51,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:12:51,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:12:51,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:12:51,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:12:51,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:12:51,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:12:51,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:12:51,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:12:51,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:12:51,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:12:51,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:12:51,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:12:51,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:12:51,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:12:51,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:12:51,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:12:51,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:12:51,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:12:51,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:12:51,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:12:51,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:12:51,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:12:51,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:12:51,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:12:51,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:12:51,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:12:51,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:12:51,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:12:51,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:12:51,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:12:51,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:12:51,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:12:51,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:12:51,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:12:51,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:12:51,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:12:51,454 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f37fbda-2286-4752-953d-66c0a5c65b80/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-12-13 12:12:51,466 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:12:51,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:12:51,467 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:12:51,467 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:12:51,467 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:12:51,467 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:12:51,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:12:51,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:12:51,468 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:12:51,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:12:51,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:12:51,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:12:51,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:12:51,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:12:51,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:12:51,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:12:51,469 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:12:51,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:12:51,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:12:51,470 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:12:51,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:12:51,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:12:51,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:12:51,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:12:51,470 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:12:51,471 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:12:51,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:12:51,471 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:12:51,471 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:12:51,471 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:12:51,471 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:12:51,471 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:12:51,471 INFO L138 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_8f37fbda-2286-4752-953d-66c0a5c65b80/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f37fbda-2286-4752-953d-66c0a5c65b80/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e8367033bd30dfa8871a8cc79785065b8ba832aaa85f1eca9c2c64bf38c1bb0 [2022-12-13 12:12:51,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:12:51,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:12:51,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:12:51,661 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:12:51,661 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:12:51,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f37fbda-2286-4752-953d-66c0a5c65b80/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness_negated.i [2022-12-13 12:12:54,299 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:12:54,543 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:12:54,543 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f37fbda-2286-4752-953d-66c0a5c65b80/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness_negated.i [2022-12-13 12:12:54,560 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f37fbda-2286-4752-953d-66c0a5c65b80/bin/uautomizer-uyxdKDjOR8/data/d47325d32/7e5c8c2cffc24d6d995f6a0d5e29eec1/FLAG68870d3f3 [2022-12-13 12:12:54,571 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f37fbda-2286-4752-953d-66c0a5c65b80/bin/uautomizer-uyxdKDjOR8/data/d47325d32/7e5c8c2cffc24d6d995f6a0d5e29eec1 [2022-12-13 12:12:54,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:12:54,574 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:12:54,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:12:54,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:12:54,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:12:54,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:12:54" (1/1) ... [2022-12-13 12:12:54,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@264a0f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:12:54, skipping insertion in model container [2022-12-13 12:12:54,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:12:54" (1/1) ... [2022-12-13 12:12:54,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:12:54,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:12:54,809 WARN L237 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_8f37fbda-2286-4752-953d-66c0a5c65b80/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness_negated.i[4494,4507] [2022-12-13 12:12:54,815 WARN L237 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_8f37fbda-2286-4752-953d-66c0a5c65b80/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness_negated.i[4554,4567] [2022-12-13 12:12:55,339 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:12:55,340 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:12:55,340 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:12:55,341 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:12:55,341 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:12:55,351 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:12:55,351 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:12:55,353 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:12:55,353 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:12:55,355 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:12:55,355 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:12:55,356 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:12:55,356 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:12:55,399 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 12:12:55,399 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 12:12:55,400 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 12:12:55,403 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-13 12:12:55,405 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-13 12:12:55,405 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-13 12:12:55,590 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-13 12:12:55,590 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-13 12:12:55,591 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-13 12:12:55,592 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-13 12:12:55,593 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-13 12:12:55,594 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-13 12:12:55,595 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-13 12:12:55,595 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-13 12:12:55,596 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-13 12:12:55,597 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-13 12:12:55,597 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-13 12:12:55,697 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-13 12:12:55,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:12:55,733 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:12:55,746 WARN L237 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_8f37fbda-2286-4752-953d-66c0a5c65b80/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness_negated.i[4494,4507] [2022-12-13 12:12:55,746 WARN L237 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_8f37fbda-2286-4752-953d-66c0a5c65b80/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness_negated.i[4554,4567] [2022-12-13 12:12:55,783 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:12:55,783 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:12:55,784 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:12:55,784 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:12:55,785 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:12:55,791 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:12:55,791 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:12:55,792 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:12:55,793 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:12:55,793 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:12:55,794 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:12:55,794 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:12:55,795 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:12:55,799 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 12:12:55,800 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 12:12:55,800 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 12:12:55,803 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-13 12:12:55,804 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-13 12:12:55,804 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-13 12:12:55,820 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-13 12:12:55,821 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-13 12:12:55,822 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-13 12:12:55,822 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-13 12:12:55,823 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-13 12:12:55,823 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-13 12:12:55,824 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-13 12:12:55,824 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-13 12:12:55,824 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-13 12:12:55,825 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-13 12:12:55,825 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-13 12:12:55,840 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-13 12:12:55,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:12:55,987 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:12:55,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:12:55 WrapperNode [2022-12-13 12:12:55,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:12:55,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:12:55,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:12:55,989 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:12:55,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:12:55" (1/1) ... [2022-12-13 12:12:56,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:12:55" (1/1) ... [2022-12-13 12:12:56,072 INFO L138 Inliner]: procedures = 679, calls = 1038, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 57 [2022-12-13 12:12:56,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:12:56,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:12:56,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:12:56,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:12:56,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:12:55" (1/1) ... [2022-12-13 12:12:56,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:12:55" (1/1) ... [2022-12-13 12:12:56,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:12:55" (1/1) ... [2022-12-13 12:12:56,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:12:55" (1/1) ... [2022-12-13 12:12:56,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:12:55" (1/1) ... [2022-12-13 12:12:56,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:12:55" (1/1) ... [2022-12-13 12:12:56,101 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:12:55" (1/1) ... [2022-12-13 12:12:56,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:12:55" (1/1) ... [2022-12-13 12:12:56,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:12:56,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:12:56,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:12:56,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:12:56,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:12:55" (1/1) ... [2022-12-13 12:12:56,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:12:56,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f37fbda-2286-4752-953d-66c0a5c65b80/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:12:56,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f37fbda-2286-4752-953d-66c0a5c65b80/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:12:56,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f37fbda-2286-4752-953d-66c0a5c65b80/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:12:56,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:12:56,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 12:12:56,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 12:12:56,164 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2022-12-13 12:12:56,164 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2022-12-13 12:12:56,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:12:56,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 12:12:56,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:12:56,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:12:56,164 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 12:12:56,164 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 12:12:56,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:12:56,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 12:12:56,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 12:12:56,165 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2022-12-13 12:12:56,165 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2022-12-13 12:12:56,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:12:56,321 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:12:56,322 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:12:56,450 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:12:56,454 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:12:56,455 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 12:12:56,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:12:56 BoogieIcfgContainer [2022-12-13 12:12:56,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:12:56,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:12:56,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:12:56,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:12:56,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:12:54" (1/3) ... [2022-12-13 12:12:56,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534e87e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:12:56, skipping insertion in model container [2022-12-13 12:12:56,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:12:55" (2/3) ... [2022-12-13 12:12:56,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534e87e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:12:56, skipping insertion in model container [2022-12-13 12:12:56,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:12:56" (3/3) ... [2022-12-13 12:12:56,462 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_next_harness_negated.i [2022-12-13 12:12:56,476 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:12:56,476 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 12:12:56,511 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:12:56,516 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;@5501b1e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:12:56,516 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 12:12:56,519 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) [2022-12-13 12:12:56,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 12:12:56,524 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:12:56,525 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] [2022-12-13 12:12:56,525 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:12:56,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:12:56,529 INFO L85 PathProgramCache]: Analyzing trace with hash 829036907, now seen corresponding path program 1 times [2022-12-13 12:12:56,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:12:56,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845465392] [2022-12-13 12:12:56,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:12:56,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:12:56,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:12:56,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:12:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:12:56,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 12:12:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:12:56,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 12:12:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:12:56,826 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 12:12:56,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:12:56,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845465392] [2022-12-13 12:12:56,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845465392] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:12:56,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:12:56,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:12:56,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285390829] [2022-12-13 12:12:56,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:12:56,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 12:12:56,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:12:56,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 12:12:56,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 12:12:56,856 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) [2022-12-13 12:12:56,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:12:56,875 INFO L93 Difference]: Finished difference Result 94 states and 124 transitions. [2022-12-13 12:12:56,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 12:12:56,877 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 [2022-12-13 12:12:56,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:12:56,883 INFO L225 Difference]: With dead ends: 94 [2022-12-13 12:12:56,883 INFO L226 Difference]: Without dead ends: 45 [2022-12-13 12:12:56,885 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 [2022-12-13 12:12:56,888 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 [2022-12-13 12:12:56,888 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] [2022-12-13 12:12:56,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-12-13 12:12:56,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-12-13 12:12:56,915 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) [2022-12-13 12:12:56,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2022-12-13 12:12:56,917 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 28 [2022-12-13 12:12:56,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:12:56,918 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2022-12-13 12:12:56,918 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) [2022-12-13 12:12:56,919 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2022-12-13 12:12:56,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 12:12:56,920 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:12:56,920 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] [2022-12-13 12:12:56,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:12:56,920 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:12:56,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:12:56,921 INFO L85 PathProgramCache]: Analyzing trace with hash -192031447, now seen corresponding path program 1 times [2022-12-13 12:12:56,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:12:56,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217446255] [2022-12-13 12:12:56,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:12:56,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:12:56,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:12:56,980 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 12:12:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:12:57,036 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 12:12:57,036 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 12:12:57,037 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 12:12:57,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 12:12:57,041 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 12:12:57,044 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 12:12:57,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 12:12:57 BoogieIcfgContainer [2022-12-13 12:12:57,064 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 12:12:57,065 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 12:12:57,065 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 12:12:57,065 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 12:12:57,065 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:12:56" (3/4) ... [2022-12-13 12:12:57,067 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-13 12:12:57,094 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f37fbda-2286-4752-953d-66c0a5c65b80/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 12:12:57,094 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 12:12:57,095 INFO L158 Benchmark]: Toolchain (without parser) took 2520.18ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 103.4MB in the beginning and 89.1MB in the end (delta: 14.3MB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB. [2022-12-13 12:12:57,095 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 100.7MB. Free memory is still 50.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 12:12:57,095 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1412.74ms. Allocated memory is still 148.9MB. Free memory was 103.0MB in the beginning and 99.1MB in the end (delta: 3.9MB). Peak memory consumption was 59.2MB. Max. memory is 16.1GB. [2022-12-13 12:12:57,095 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.57ms. Allocated memory is still 148.9MB. Free memory was 99.1MB in the beginning and 94.1MB in the end (delta: 5.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-13 12:12:57,096 INFO L158 Benchmark]: Boogie Preprocessor took 33.11ms. Allocated memory is still 148.9MB. Free memory was 94.1MB in the beginning and 91.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 12:12:57,096 INFO L158 Benchmark]: RCFGBuilder took 349.92ms. Allocated memory is still 148.9MB. Free memory was 91.1MB in the beginning and 72.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 12:12:57,096 INFO L158 Benchmark]: TraceAbstraction took 606.30ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 71.0MB in the beginning and 92.2MB in the end (delta: -21.2MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2022-12-13 12:12:57,096 INFO L158 Benchmark]: Witness Printer took 29.57ms. Allocated memory is still 180.4MB. Free memory was 92.2MB in the beginning and 89.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 12:12:57,098 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 100.7MB. Free memory is still 50.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1412.74ms. Allocated memory is still 148.9MB. Free memory was 103.0MB in the beginning and 99.1MB in the end (delta: 3.9MB). Peak memory consumption was 59.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.57ms. Allocated memory is still 148.9MB. Free memory was 99.1MB in the beginning and 94.1MB in the end (delta: 5.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.11ms. Allocated memory is still 148.9MB. Free memory was 94.1MB in the beginning and 91.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 349.92ms. Allocated memory is still 148.9MB. Free memory was 91.1MB in the beginning and 72.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 606.30ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 71.0MB in the beginning and 92.2MB in the end (delta: -21.2MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * Witness Printer took 29.57ms. Allocated memory is still 180.4MB. Free memory was 92.2MB in the beginning and 89.1MB in the end (delta: 3.1MB). 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_next_harness() [L7378] struct aws_linked_list_node node; [L7379] struct aws_linked_list_node after; [L7382] node.next = &after [L7383] after.prev = &node [L7386] CALL aws_linked_list_next(&node) [L4837] CALL, EXPR aws_linked_list_node_next_is_valid(node) VAL [node={7:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4720] EXPR node && node->next [L4720] EXPR node->next [L4720] EXPR node && node->next VAL [node={7:0}, node={7:0}, node && node->next=1, node->next={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4720] EXPR node && node->next && node->next->prev == node [L4720] EXPR node->next [L4720] EXPR node->next->prev [L4720] EXPR node && node->next && node->next->prev == node VAL [node={7:0}, node={7:0}, node && node->next=1, node && node->next && node->next->prev == node=1, node->next={6:0}, node->next={6:0}, node->next->prev={7:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4720] return node && node->next && node->next->prev == node; [L4837] RET, EXPR aws_linked_list_node_next_is_valid(node) VAL [aws_linked_list_node_next_is_valid(node)=1, node={7:0}, node={7:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4837] CALL assume_abort_if_not((aws_linked_list_node_next_is_valid(node))) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4837] RET assume_abort_if_not((aws_linked_list_node_next_is_valid(node))) VAL [aws_linked_list_node_next_is_valid(node)=1, node={7:0}, node={7:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4838] EXPR node->next [L4838] struct aws_linked_list_node *rval = node->next; [L4839] CALL, EXPR aws_linked_list_node_next_is_valid(node) VAL [node={7:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4720] EXPR node && node->next [L4720] EXPR node->next [L4720] EXPR node && node->next VAL [node={7:0}, node={7:0}, node && node->next=1, node->next={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4720] EXPR node && node->next && node->next->prev == node [L4720] EXPR node->next [L4720] EXPR node->next->prev [L4720] EXPR node && node->next && node->next->prev == node VAL [node={7:0}, node={7:0}, node && node->next=1, node && node->next && node->next->prev == node=1, node->next={6:0}, node->next={6:0}, node->next->prev={7:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4720] return node && node->next && node->next->prev == node; [L4839] RET, EXPR aws_linked_list_node_next_is_valid(node) VAL [aws_linked_list_node_next_is_valid(node)=1, node={7:0}, node={7:0}, rval={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4839] CALL __VERIFIER_assert(!((aws_linked_list_node_next_is_valid(node)))) VAL [\old(cond)=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L223] COND TRUE !cond VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L223] reach_error() VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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, 0.1s SatisfiabilityAnalysisTime, 0.2s 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! [2022-12-13 12:12:57,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f37fbda-2286-4752-953d-66c0a5c65b80/bin/uautomizer-uyxdKDjOR8/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