./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_15708285-f5d0-47d7-bf58-c07ee359b63d/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15708285-f5d0-47d7-bf58-c07ee359b63d/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15708285-f5d0-47d7-bf58-c07ee359b63d/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15708285-f5d0-47d7-bf58-c07ee359b63d/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15708285-f5d0-47d7-bf58-c07ee359b63d/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15708285-f5d0-47d7-bf58-c07ee359b63d/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 52a5b40e07f9d2025e21e89532c54ecb2612af1d6384644534b1ef79f7198c6a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:15:25,365 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:15:25,462 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15708285-f5d0-47d7-bf58-c07ee359b63d/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:15:25,469 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:15:25,469 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:15:25,514 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:15:25,518 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:15:25,519 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:15:25,520 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:15:25,525 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:15:25,525 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:15:25,526 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:15:25,526 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:15:25,528 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:15:25,529 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:15:25,529 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:15:25,530 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:15:25,530 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:15:25,530 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:15:25,531 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:15:25,531 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:15:25,532 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:15:25,533 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:15:25,534 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:15:25,534 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:15:25,534 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:15:25,535 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:15:25,535 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:15:25,536 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:15:25,536 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:15:25,537 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:15:25,538 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:15:25,538 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:15:25,538 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:15:25,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:15:25,539 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:15:25,555 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:15:25,555 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:15:25,556 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:15:25,556 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:15:25,557 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:15:25,557 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:15:25,557 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:15:25,557 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:15:25,558 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15708285-f5d0-47d7-bf58-c07ee359b63d/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15708285-f5d0-47d7-bf58-c07ee359b63d/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52a5b40e07f9d2025e21e89532c54ecb2612af1d6384644534b1ef79f7198c6a [2023-11-24 23:15:25,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:15:25,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:15:25,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:15:25,919 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:15:25,920 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:15:25,921 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15708285-f5d0-47d7-bf58-c07ee359b63d/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i [2023-11-24 23:15:29,078 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:15:29,646 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:15:29,647 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15708285-f5d0-47d7-bf58-c07ee359b63d/sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i [2023-11-24 23:15:29,684 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15708285-f5d0-47d7-bf58-c07ee359b63d/bin/utaipan-verify-SwPr7d2a91/data/e974b6249/67cb2e3b47474f4f83a436d3793569c9/FLAG483b2eb77 [2023-11-24 23:15:29,703 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15708285-f5d0-47d7-bf58-c07ee359b63d/bin/utaipan-verify-SwPr7d2a91/data/e974b6249/67cb2e3b47474f4f83a436d3793569c9 [2023-11-24 23:15:29,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:15:29,711 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:15:29,717 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:15:29,717 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:15:29,723 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:15:29,723 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:15:29" (1/1) ... [2023-11-24 23:15:29,725 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@166ff68b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:29, skipping insertion in model container [2023-11-24 23:15:29,725 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:15:29" (1/1) ... [2023-11-24 23:15:29,862 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:15:30,127 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_15708285-f5d0-47d7-bf58-c07ee359b63d/sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i[4500,4513] [2023-11-24 23:15:30,136 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_15708285-f5d0-47d7-bf58-c07ee359b63d/sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i[4560,4573] [2023-11-24 23:15:31,232 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:31,238 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:31,240 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:31,243 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:31,248 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:31,272 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:31,273 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:31,278 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:31,280 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:31,290 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:31,293 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:31,294 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:31,295 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:31,763 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:15:31,764 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:15:31,766 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:15:31,767 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:15:31,769 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:15:31,770 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:15:31,771 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:15:31,771 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:15:31,772 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:15:31,774 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:15:31,985 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:15:32,007 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:15:32,022 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_15708285-f5d0-47d7-bf58-c07ee359b63d/sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i[4500,4513] [2023-11-24 23:15:32,022 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_15708285-f5d0-47d7-bf58-c07ee359b63d/sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i[4560,4573] [2023-11-24 23:15:32,097 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:32,098 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:32,099 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:32,100 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:32,100 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:32,116 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:32,117 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:32,118 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:32,122 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:32,123 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:32,124 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:32,124 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:32,125 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:32,193 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:15:32,194 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:15:32,195 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:15:32,196 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:15:32,199 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:15:32,199 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:15:32,200 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:15:32,201 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:15:32,201 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:15:32,202 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:15:32,272 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:15:32,497 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:32,497 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:32,497 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:32,497 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:32,497 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:32,498 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:32,498 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:32,498 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:32,498 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:32,498 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:32,498 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:32,499 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:32,499 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:32,499 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:32,499 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:32,499 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:32,508 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:15:32,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:32 WrapperNode [2023-11-24 23:15:32,508 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:15:32,510 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:15:32,510 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:15:32,510 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:15:32,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:32" (1/1) ... [2023-11-24 23:15:32,595 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:32" (1/1) ... [2023-11-24 23:15:32,642 INFO L138 Inliner]: procedures = 678, calls = 1048, calls flagged for inlining = 52, calls inlined = 6, statements flattened = 151 [2023-11-24 23:15:32,642 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:15:32,643 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:15:32,643 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:15:32,644 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:15:32,656 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:32" (1/1) ... [2023-11-24 23:15:32,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:32" (1/1) ... [2023-11-24 23:15:32,662 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:32" (1/1) ... [2023-11-24 23:15:32,663 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:32" (1/1) ... [2023-11-24 23:15:32,682 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:32" (1/1) ... [2023-11-24 23:15:32,686 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:32" (1/1) ... [2023-11-24 23:15:32,691 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:32" (1/1) ... [2023-11-24 23:15:32,694 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:32" (1/1) ... [2023-11-24 23:15:32,702 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:15:32,703 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:15:32,703 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:15:32,703 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:15:32,704 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:32" (1/1) ... [2023-11-24 23:15:32,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:15:32,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15708285-f5d0-47d7-bf58-c07ee359b63d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:15:32,753 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15708285-f5d0-47d7-bf58-c07ee359b63d/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:15:32,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15708285-f5d0-47d7-bf58-c07ee359b63d/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:15:32,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:15:32,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:15:32,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:15:32,801 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2023-11-24 23:15:32,801 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2023-11-24 23:15:32,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:15:32,802 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2023-11-24 23:15:32,809 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2023-11-24 23:15:32,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:15:32,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:15:32,810 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_insert_before [2023-11-24 23:15:32,811 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_insert_before [2023-11-24 23:15:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:15:32,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:15:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:15:32,811 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:15:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:15:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:15:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:15:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-24 23:15:32,812 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-24 23:15:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2023-11-24 23:15:32,813 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2023-11-24 23:15:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:15:33,101 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:15:33,104 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:15:33,500 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:15:33,690 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:15:33,690 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 23:15:33,692 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:15:33 BoogieIcfgContainer [2023-11-24 23:15:33,692 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:15:33,695 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:15:33,695 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:15:33,701 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:15:33,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:15:29" (1/3) ... [2023-11-24 23:15:33,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1395ee31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:15:33, skipping insertion in model container [2023-11-24 23:15:33,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:32" (2/3) ... [2023-11-24 23:15:33,704 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1395ee31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:15:33, skipping insertion in model container [2023-11-24 23:15:33,705 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:15:33" (3/3) ... [2023-11-24 23:15:33,706 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_push_front_harness.i [2023-11-24 23:15:33,727 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:15:33,727 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:15:33,782 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:15:33,798 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@37bb3328, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:15:33,798 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:15:33,803 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 39 states have internal predecessors, (46), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-24 23:15:33,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-24 23:15:33,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:15:33,819 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:15:33,820 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:15:33,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:15:33,827 INFO L85 PathProgramCache]: Analyzing trace with hash -518986292, now seen corresponding path program 1 times [2023-11-24 23:15:33,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:15:33,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833665282] [2023-11-24 23:15:33,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:33,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:15:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:15:34,846 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-24 23:15:34,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:15:34,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833665282] [2023-11-24 23:15:34,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833665282] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:15:34,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010803986] [2023-11-24 23:15:34,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:34,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:15:34,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15708285-f5d0-47d7-bf58-c07ee359b63d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:15:34,859 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15708285-f5d0-47d7-bf58-c07ee359b63d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:15:34,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15708285-f5d0-47d7-bf58-c07ee359b63d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:15:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:15:35,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-24 23:15:35,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:15:35,257 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-24 23:15:35,257 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:15:35,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010803986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:15:35,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:15:35,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 9 [2023-11-24 23:15:35,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769553830] [2023-11-24 23:15:35,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:15:35,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:15:35,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:15:35,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:15:35,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:15:35,300 INFO L87 Difference]: Start difference. First operand has 75 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 39 states have internal predecessors, (46), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 7 states, 4 states have (on average 5.0) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-24 23:15:35,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:15:35,583 INFO L93 Difference]: Finished difference Result 144 states and 209 transitions. [2023-11-24 23:15:35,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:15:35,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 4 states have (on average 5.0) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 43 [2023-11-24 23:15:35,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:15:35,596 INFO L225 Difference]: With dead ends: 144 [2023-11-24 23:15:35,597 INFO L226 Difference]: Without dead ends: 76 [2023-11-24 23:15:35,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-24 23:15:35,605 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 15 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:15:35,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 453 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:15:35,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-24 23:15:35,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2023-11-24 23:15:35,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 40 states have internal predecessors, (45), 28 states have call successors, (28), 7 states have call predecessors, (28), 8 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) [2023-11-24 23:15:35,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 102 transitions. [2023-11-24 23:15:35,689 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 102 transitions. Word has length 43 [2023-11-24 23:15:35,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:15:35,691 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 102 transitions. [2023-11-24 23:15:35,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 4 states have (on average 5.0) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-24 23:15:35,691 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 102 transitions. [2023-11-24 23:15:35,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-24 23:15:35,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:15:35,695 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:15:35,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15708285-f5d0-47d7-bf58-c07ee359b63d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:15:35,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15708285-f5d0-47d7-bf58-c07ee359b63d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-24 23:15:35,907 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:15:35,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:15:35,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1167872648, now seen corresponding path program 1 times [2023-11-24 23:15:35,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:15:35,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283761747] [2023-11-24 23:15:35,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:35,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:15:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:15:36,326 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-24 23:15:36,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:15:36,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283761747] [2023-11-24 23:15:36,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283761747] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:15:36,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166903800] [2023-11-24 23:15:36,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:36,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:15:36,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15708285-f5d0-47d7-bf58-c07ee359b63d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:15:36,329 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15708285-f5d0-47d7-bf58-c07ee359b63d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:15:36,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15708285-f5d0-47d7-bf58-c07ee359b63d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:15:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:15:36,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-24 23:15:36,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:15:36,699 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-24 23:15:36,700 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:15:36,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166903800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:15:36,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:15:36,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 10 [2023-11-24 23:15:36,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946400511] [2023-11-24 23:15:36,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:15:36,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:15:36,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:15:36,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:15:36,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-24 23:15:36,725 INFO L87 Difference]: Start difference. First operand 75 states and 102 transitions. Second operand has 8 states, 5 states have (on average 4.4) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-24 23:15:36,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:15:36,985 INFO L93 Difference]: Finished difference Result 145 states and 198 transitions. [2023-11-24 23:15:36,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 23:15:36,986 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 4.4) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 45 [2023-11-24 23:15:36,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:15:36,988 INFO L225 Difference]: With dead ends: 145 [2023-11-24 23:15:36,988 INFO L226 Difference]: Without dead ends: 79 [2023-11-24 23:15:36,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:15:36,991 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 17 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:15:36,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 535 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:15:36,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-24 23:15:37,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2023-11-24 23:15:37,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 41 states have internal predecessors, (46), 28 states have call successors, (28), 7 states have call predecessors, (28), 8 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) [2023-11-24 23:15:37,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 103 transitions. [2023-11-24 23:15:37,007 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 103 transitions. Word has length 45 [2023-11-24 23:15:37,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:15:37,007 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 103 transitions. [2023-11-24 23:15:37,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 4.4) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-24 23:15:37,008 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 103 transitions. [2023-11-24 23:15:37,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-24 23:15:37,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:15:37,010 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:15:37,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15708285-f5d0-47d7-bf58-c07ee359b63d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:15:37,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15708285-f5d0-47d7-bf58-c07ee359b63d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:15:37,217 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:15:37,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:15:37,217 INFO L85 PathProgramCache]: Analyzing trace with hash 455660948, now seen corresponding path program 1 times [2023-11-24 23:15:37,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:15:37,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255742587] [2023-11-24 23:15:37,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:37,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:15:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:15:37,522 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-24 23:15:37,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:15:37,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255742587] [2023-11-24 23:15:37,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255742587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:15:37,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:15:37,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 23:15:37,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240444450] [2023-11-24 23:15:37,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:15:37,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:15:37,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:15:37,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:15:37,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:15:37,528 INFO L87 Difference]: Start difference. First operand 76 states and 103 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-24 23:15:37,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:15:37,663 INFO L93 Difference]: Finished difference Result 97 states and 125 transitions. [2023-11-24 23:15:37,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:15:37,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 47 [2023-11-24 23:15:37,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:15:37,667 INFO L225 Difference]: With dead ends: 97 [2023-11-24 23:15:37,668 INFO L226 Difference]: Without dead ends: 0 [2023-11-24 23:15:37,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-24 23:15:37,670 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 29 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:15:37,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 77 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:15:37,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-24 23:15:37,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-24 23:15:37,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:15:37,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-24 23:15:37,672 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2023-11-24 23:15:37,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:15:37,672 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-24 23:15:37,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-24 23:15:37,673 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-24 23:15:37,673 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-24 23:15:37,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-24 23:15:37,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:15:37,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-24 23:15:37,769 INFO L899 garLoopResultBuilder]: For program point aws_linked_list_node_next_is_validEXIT(lines 4715 4719) no Hoare annotation was computed. [2023-11-24 23:15:37,769 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 4715 4719) the Hoare annotation is: true [2023-11-24 23:15:37,769 INFO L899 garLoopResultBuilder]: For program point aws_linked_list_node_prev_is_validEXIT(lines 4726 4730) no Hoare annotation was computed. [2023-11-24 23:15:37,770 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 4726 4730) the Hoare annotation is: true [2023-11-24 23:15:37,770 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 210 212) the Hoare annotation is: true [2023-11-24 23:15:37,773 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2023-11-24 23:15:37,773 INFO L899 garLoopResultBuilder]: For program point nondet_uint64_tEXIT(line 266) no Hoare annotation was computed. [2023-11-24 23:15:37,773 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 266) the Hoare annotation is: true [2023-11-24 23:15:37,774 INFO L902 garLoopResultBuilder]: At program point L4923(line 4923) the Hoare annotation is: true [2023-11-24 23:15:37,774 INFO L902 garLoopResultBuilder]: At program point L4922(line 4922) the Hoare annotation is: true [2023-11-24 23:15:37,774 INFO L899 garLoopResultBuilder]: For program point L4923-1(line 4923) no Hoare annotation was computed. [2023-11-24 23:15:37,774 INFO L902 garLoopResultBuilder]: At program point L4920-1(line 4920) the Hoare annotation is: true [2023-11-24 23:15:37,774 INFO L899 garLoopResultBuilder]: For program point L4921-2(line 4921) no Hoare annotation was computed. [2023-11-24 23:15:37,774 INFO L899 garLoopResultBuilder]: For program point L4920-2(line 4920) no Hoare annotation was computed. [2023-11-24 23:15:37,777 INFO L902 garLoopResultBuilder]: At program point L4921(line 4921) the Hoare annotation is: true [2023-11-24 23:15:37,777 INFO L902 garLoopResultBuilder]: At program point L4922-1(line 4922) the Hoare annotation is: true [2023-11-24 23:15:37,777 INFO L902 garLoopResultBuilder]: At program point L4920(line 4920) the Hoare annotation is: true [2023-11-24 23:15:37,777 INFO L902 garLoopResultBuilder]: At program point L4921-1(line 4921) the Hoare annotation is: true [2023-11-24 23:15:37,778 INFO L899 garLoopResultBuilder]: For program point L4922-2(line 4922) no Hoare annotation was computed. [2023-11-24 23:15:37,778 INFO L902 garLoopResultBuilder]: At program point L4912-1(line 4912) the Hoare annotation is: true [2023-11-24 23:15:37,778 INFO L899 garLoopResultBuilder]: For program point L4912-2(line 4912) no Hoare annotation was computed. [2023-11-24 23:15:37,778 INFO L902 garLoopResultBuilder]: At program point L4913(lines 4913 4915) the Hoare annotation is: true [2023-11-24 23:15:37,778 INFO L902 garLoopResultBuilder]: At program point L4912(line 4912) the Hoare annotation is: true [2023-11-24 23:15:37,779 INFO L899 garLoopResultBuilder]: For program point L4913-1(lines 4913 4915) no Hoare annotation was computed. [2023-11-24 23:15:37,779 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 4909 4924) the Hoare annotation is: true [2023-11-24 23:15:37,779 INFO L899 garLoopResultBuilder]: For program point aws_linked_list_insert_beforeEXIT(lines 4909 4924) no Hoare annotation was computed. [2023-11-24 23:15:37,780 INFO L895 garLoopResultBuilder]: At program point L4990(line 4990) the Hoare annotation is: (and (<= 2 |ULTIMATE.start_aws_linked_list_push_front_~node#1.base|) (<= 2 |ULTIMATE.start_aws_linked_list_push_front_harness_~#to_add~0#1.base|) (not (= |ULTIMATE.start_aws_linked_list_push_front_harness_~#list~0#1.base| 0)) (not (= |ULTIMATE.start_aws_linked_list_push_front_~list#1.base| 0))) [2023-11-24 23:15:37,781 INFO L899 garLoopResultBuilder]: For program point L4994-1(line 4994) no Hoare annotation was computed. [2023-11-24 23:15:37,783 INFO L895 garLoopResultBuilder]: At program point L4990-1(line 4990) the Hoare annotation is: (and (<= 2 |ULTIMATE.start_aws_linked_list_push_front_~node#1.base|) (<= 2 |ULTIMATE.start_aws_linked_list_push_front_harness_~#to_add~0#1.base|) (= |ULTIMATE.start_aws_linked_list_push_front_#t~ret409#1| 0)) [2023-11-24 23:15:37,784 INFO L899 garLoopResultBuilder]: For program point L7389-1(line 7389) no Hoare annotation was computed. [2023-11-24 23:15:37,784 INFO L899 garLoopResultBuilder]: For program point L4990-2(line 4990) no Hoare annotation was computed. [2023-11-24 23:15:37,784 INFO L895 garLoopResultBuilder]: At program point L7389(line 7389) the Hoare annotation is: false [2023-11-24 23:15:37,784 INFO L895 garLoopResultBuilder]: At program point L4995(line 4995) the Hoare annotation is: false [2023-11-24 23:15:37,784 INFO L895 garLoopResultBuilder]: At program point L4995-1(line 4995) the Hoare annotation is: false [2023-11-24 23:15:37,785 INFO L895 garLoopResultBuilder]: At program point L4991(lines 4991 4993) the Hoare annotation is: false [2023-11-24 23:15:37,785 INFO L895 garLoopResultBuilder]: At program point L7390(line 7390) the Hoare annotation is: false [2023-11-24 23:15:37,785 INFO L899 garLoopResultBuilder]: For program point L4991-1(lines 4991 4993) no Hoare annotation was computed. [2023-11-24 23:15:37,785 INFO L899 garLoopResultBuilder]: For program point L4995-2(line 4995) no Hoare annotation was computed. [2023-11-24 23:15:37,785 INFO L895 garLoopResultBuilder]: At program point L7386(line 7386) the Hoare annotation is: false [2023-11-24 23:15:37,785 INFO L899 garLoopResultBuilder]: For program point L7390-1(line 7390) no Hoare annotation was computed. [2023-11-24 23:15:37,786 INFO L899 garLoopResultBuilder]: For program point L7386-2(line 7386) no Hoare annotation was computed. [2023-11-24 23:15:37,786 INFO L895 garLoopResultBuilder]: At program point L7386-1(line 7386) the Hoare annotation is: false [2023-11-24 23:15:37,788 INFO L895 garLoopResultBuilder]: At program point L6767-3(lines 6767 6774) the Hoare annotation is: (and (<= 2 |ULTIMATE.start_aws_linked_list_push_front_harness_~#to_add~0#1.base|) (not (= |ULTIMATE.start_aws_linked_list_push_front_harness_~#list~0#1.base| 0))) [2023-11-24 23:15:37,789 INFO L899 garLoopResultBuilder]: For program point L6755-1(line 6755) no Hoare annotation was computed. [2023-11-24 23:15:37,789 INFO L899 garLoopResultBuilder]: For program point L4996-1(line 4996) no Hoare annotation was computed. [2023-11-24 23:15:37,789 INFO L895 garLoopResultBuilder]: At program point L6755(line 6755) the Hoare annotation is: (and (<= 2 |ULTIMATE.start_aws_linked_list_push_front_harness_~#to_add~0#1.base|) (not (= |ULTIMATE.start_aws_linked_list_push_front_harness_~#list~0#1.base| 0))) [2023-11-24 23:15:37,789 INFO L895 garLoopResultBuilder]: At program point L4996(line 4996) the Hoare annotation is: false [2023-11-24 23:15:37,790 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-24 23:15:37,790 INFO L895 garLoopResultBuilder]: At program point L7387-1(line 7387) the Hoare annotation is: false [2023-11-24 23:15:37,790 INFO L895 garLoopResultBuilder]: At program point L7387(line 7387) the Hoare annotation is: false [2023-11-24 23:15:37,790 INFO L899 garLoopResultBuilder]: For program point L7387-2(line 7387) no Hoare annotation was computed. [2023-11-24 23:15:37,790 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-24 23:15:37,790 INFO L899 garLoopResultBuilder]: For program point L6756-1(line 6756) no Hoare annotation was computed. [2023-11-24 23:15:37,791 INFO L895 garLoopResultBuilder]: At program point L6756(line 6756) the Hoare annotation is: (and (<= 2 |ULTIMATE.start_aws_linked_list_push_front_harness_~#to_add~0#1.base|) (not (= |ULTIMATE.start_aws_linked_list_push_front_harness_~#list~0#1.base| 0))) [2023-11-24 23:15:37,791 INFO L899 garLoopResultBuilder]: For program point L7388-2(line 7388) no Hoare annotation was computed. [2023-11-24 23:15:37,791 INFO L895 garLoopResultBuilder]: At program point L7388-1(line 7388) the Hoare annotation is: false [2023-11-24 23:15:37,791 INFO L895 garLoopResultBuilder]: At program point L7388(line 7388) the Hoare annotation is: false [2023-11-24 23:15:37,791 INFO L895 garLoopResultBuilder]: At program point L4994(line 4994) the Hoare annotation is: false [2023-11-24 23:15:37,792 INFO L899 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2023-11-24 23:15:37,792 INFO L899 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2023-11-24 23:15:37,792 INFO L899 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2023-11-24 23:15:37,792 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2023-11-24 23:15:37,792 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 222 224) the Hoare annotation is: true [2023-11-24 23:15:37,792 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2023-11-24 23:15:37,793 INFO L899 garLoopResultBuilder]: For program point L4734(lines 4734 4738) no Hoare annotation was computed. [2023-11-24 23:15:37,793 INFO L899 garLoopResultBuilder]: For program point L4751(lines 4751 4761) no Hoare annotation was computed. [2023-11-24 23:15:37,793 INFO L899 garLoopResultBuilder]: For program point L4756-1(lines 4756 4761) no Hoare annotation was computed. [2023-11-24 23:15:37,796 INFO L895 garLoopResultBuilder]: At program point L4756(line 4756) the Hoare annotation is: (and (= |aws_linked_list_is_valid_#in~list#1.base| 0) (= 0 |aws_linked_list_is_valid_~list#1.base|) (= |aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~list#1.base| 0)) [2023-11-24 23:15:37,796 INFO L899 garLoopResultBuilder]: For program point L4694-11(lines 4694 4704) no Hoare annotation was computed. [2023-11-24 23:15:37,796 INFO L899 garLoopResultBuilder]: For program point aws_linked_list_is_validEXIT(lines 4691 4708) no Hoare annotation was computed. [2023-11-24 23:15:37,797 INFO L899 garLoopResultBuilder]: For program point aws_linked_list_is_valid_deep_returnLabel#1(lines 4731 4765) no Hoare annotation was computed. [2023-11-24 23:15:37,797 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 4691 4708) the Hoare annotation is: true [2023-11-24 23:15:37,797 INFO L899 garLoopResultBuilder]: For program point aws_linked_list_is_validFINAL(lines 4691 4708) no Hoare annotation was computed. [2023-11-24 23:15:37,797 INFO L899 garLoopResultBuilder]: For program point L4750-3(lines 4750 4763) no Hoare annotation was computed. [2023-11-24 23:15:37,798 INFO L895 garLoopResultBuilder]: At program point L4750-2(lines 4750 4763) the Hoare annotation is: (and (= |aws_linked_list_is_valid_#in~list#1.base| 0) (= 0 |aws_linked_list_is_valid_~list#1.base|) (= |aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~list#1.base| 0)) [2023-11-24 23:15:37,802 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-24 23:15:37,805 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 23:15:37,818 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression #in~list!base has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-24 23:15:37,820 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression ~list!base has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-24 23:15:37,821 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression ~list!base has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-24 23:15:37,822 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~#to_add~0 [2023-11-24 23:15:37,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 11:15:37 BoogieIcfgContainer [2023-11-24 23:15:37,823 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 23:15:37,823 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:15:37,823 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:15:37,824 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:15:37,824 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:15:33" (3/4) ... [2023-11-24 23:15:37,826 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 23:15:37,830 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_linked_list_node_next_is_valid [2023-11-24 23:15:37,830 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_uint64_t [2023-11-24 23:15:37,830 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_linked_list_node_prev_is_valid [2023-11-24 23:15:37,830 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_linked_list_insert_before [2023-11-24 23:15:37,831 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-24 23:15:37,831 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-24 23:15:37,831 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_linked_list_is_valid [2023-11-24 23:15:37,839 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 45 nodes and edges [2023-11-24 23:15:37,840 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-24 23:15:37,840 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-24 23:15:37,841 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-24 23:15:37,957 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15708285-f5d0-47d7-bf58-c07ee359b63d/bin/utaipan-verify-SwPr7d2a91/witness.graphml [2023-11-24 23:15:37,958 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15708285-f5d0-47d7-bf58-c07ee359b63d/bin/utaipan-verify-SwPr7d2a91/witness.yml [2023-11-24 23:15:37,958 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:15:37,959 INFO L158 Benchmark]: Toolchain (without parser) took 8247.67ms. Allocated memory was 163.6MB in the beginning and 211.8MB in the end (delta: 48.2MB). Free memory was 124.4MB in the beginning and 59.4MB in the end (delta: 65.0MB). Peak memory consumption was 112.7MB. Max. memory is 16.1GB. [2023-11-24 23:15:37,962 INFO L158 Benchmark]: CDTParser took 1.34ms. Allocated memory is still 123.7MB. Free memory is still 96.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:15:37,963 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2792.18ms. Allocated memory is still 163.6MB. Free memory was 124.4MB in the beginning and 78.5MB in the end (delta: 45.9MB). Peak memory consumption was 66.7MB. Max. memory is 16.1GB. [2023-11-24 23:15:37,964 INFO L158 Benchmark]: Boogie Procedure Inliner took 133.06ms. Allocated memory is still 163.6MB. Free memory was 78.5MB in the beginning and 73.1MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-24 23:15:37,965 INFO L158 Benchmark]: Boogie Preprocessor took 58.60ms. Allocated memory is still 163.6MB. Free memory was 73.1MB in the beginning and 69.8MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:15:37,965 INFO L158 Benchmark]: RCFGBuilder took 989.68ms. Allocated memory was 163.6MB in the beginning and 211.8MB in the end (delta: 48.2MB). Free memory was 69.8MB in the beginning and 125.9MB in the end (delta: -56.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-24 23:15:37,966 INFO L158 Benchmark]: TraceAbstraction took 4127.60ms. Allocated memory is still 211.8MB. Free memory was 124.9MB in the beginning and 66.8MB in the end (delta: 58.1MB). Peak memory consumption was 59.2MB. Max. memory is 16.1GB. [2023-11-24 23:15:37,966 INFO L158 Benchmark]: Witness Printer took 134.73ms. Allocated memory is still 211.8MB. Free memory was 66.8MB in the beginning and 59.4MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-24 23:15:37,968 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.34ms. Allocated memory is still 123.7MB. Free memory is still 96.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2792.18ms. Allocated memory is still 163.6MB. Free memory was 124.4MB in the beginning and 78.5MB in the end (delta: 45.9MB). Peak memory consumption was 66.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 133.06ms. Allocated memory is still 163.6MB. Free memory was 78.5MB in the beginning and 73.1MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.60ms. Allocated memory is still 163.6MB. Free memory was 73.1MB in the beginning and 69.8MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 989.68ms. Allocated memory was 163.6MB in the beginning and 211.8MB in the end (delta: 48.2MB). Free memory was 69.8MB in the beginning and 125.9MB in the end (delta: -56.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4127.60ms. Allocated memory is still 211.8MB. Free memory was 124.9MB in the beginning and 66.8MB in the end (delta: 58.1MB). Peak memory consumption was 59.2MB. Max. memory is 16.1GB. * Witness Printer took 134.73ms. Allocated memory is still 211.8MB. Free memory was 66.8MB in the beginning and 59.4MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #in~list!base has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression ~list!base has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression ~list!base has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~#to_add~0 * 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 - PositiveResult [Line: 223]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 3, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 78 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 61 mSDsluCounter, 1065 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 880 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 307 IncrementalHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 185 mSDtfsCounter, 307 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=2, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 37 LocationsWithAnnotation, 141 PreInvPairs, 142 NumberOfFragments, 99 HoareAnnotationTreeSize, 141 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 37 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 223 NumberOfCodeBlocks, 223 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 218 ConstructedInterpolants, 0 QuantifiedInterpolants, 326 SizeOfPredicates, 9 NumberOfNonLiveVariables, 761 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 104/110 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 4750]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 6767]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2023-11-24 23:15:37,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15708285-f5d0-47d7-bf58-c07ee359b63d/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE