./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 eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 52a5b40e07f9d2025e21e89532c54ecb2612af1d6384644534b1ef79f7198c6a --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 22:14:02,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 22:14:02,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 22:14:02,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 22:14:02,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 22:14:02,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 22:14:02,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 22:14:02,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 22:14:02,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 22:14:02,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 22:14:02,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 22:14:02,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 22:14:02,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 22:14:02,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 22:14:02,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 22:14:02,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 22:14:02,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 22:14:02,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 22:14:02,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 22:14:02,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 22:14:02,233 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 22:14:02,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 22:14:02,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 22:14:02,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 22:14:02,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 22:14:02,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 22:14:02,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 22:14:02,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 22:14:02,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 22:14:02,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 22:14:02,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 22:14:02,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 22:14:02,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 22:14:02,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 22:14:02,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 22:14:02,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 22:14:02,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 22:14:02,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 22:14:02,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 22:14:02,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 22:14:02,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 22:14:02,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 22:14:02,262 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 22:14:02,280 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 22:14:02,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 22:14:02,282 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 22:14:02,282 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 22:14:02,282 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 22:14:02,282 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 22:14:02,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 22:14:02,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 22:14:02,283 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 22:14:02,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 22:14:02,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 22:14:02,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 22:14:02,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 22:14:02,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 22:14:02,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 22:14:02,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 22:14:02,285 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 22:14:02,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 22:14:02,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 22:14:02,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 22:14:02,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 22:14:02,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:14:02,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 22:14:02,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 22:14:02,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 22:14:02,287 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 22:14:02,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 22:14:02,288 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 22:14:02,288 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 22:14:02,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 22:14:02,288 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52a5b40e07f9d2025e21e89532c54ecb2612af1d6384644534b1ef79f7198c6a [2022-07-19 22:14:02,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 22:14:02,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 22:14:02,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 22:14:02,487 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 22:14:02,488 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 22:14:02,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i [2022-07-19 22:14:02,531 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a39881b2/eb0bac2d825943189c7b09b744606651/FLAGa244e7c5b [2022-07-19 22:14:03,028 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 22:14:03,028 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i [2022-07-19 22:14:03,051 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a39881b2/eb0bac2d825943189c7b09b744606651/FLAGa244e7c5b [2022-07-19 22:14:03,282 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a39881b2/eb0bac2d825943189c7b09b744606651 [2022-07-19 22:14:03,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 22:14:03,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 22:14:03,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 22:14:03,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 22:14:03,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 22:14:03,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:14:03" (1/1) ... [2022-07-19 22:14:03,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bb699ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:14:03, skipping insertion in model container [2022-07-19 22:14:03,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:14:03" (1/1) ... [2022-07-19 22:14:03,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 22:14:03,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 22:14:03,538 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i[4500,4513] [2022-07-19 22:14:03,542 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i[4560,4573] [2022-07-19 22:14:03,985 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:14:03,986 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:14:03,986 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:14:03,986 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:14:03,987 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:14:03,994 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:14:04,001 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:14:04,003 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:14:04,003 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:14:04,004 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:14:04,005 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:14:04,006 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:14:04,006 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:14:04,227 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 22:14:04,228 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 22:14:04,228 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 22:14:04,229 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 22:14:04,229 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 22:14:04,230 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 22:14:04,230 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 22:14:04,230 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 22:14:04,231 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 22:14:04,231 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 22:14:04,347 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 22:14:04,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 22:14:04,393 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 22:14:04,402 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i[4500,4513] [2022-07-19 22:14:04,402 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i[4560,4573] [2022-07-19 22:14:04,424 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:14:04,424 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:14:04,425 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:14:04,425 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:14:04,425 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:14:04,429 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:14:04,430 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:14:04,430 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:14:04,431 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:14:04,431 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:14:04,432 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:14:04,432 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:14:04,432 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:14:04,460 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 22:14:04,461 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 22:14:04,462 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 22:14:04,462 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 22:14:04,463 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 22:14:04,463 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 22:14:04,463 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 22:14:04,464 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 22:14:04,464 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 22:14:04,464 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 22:14:04,483 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 22:14:04,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 22:14:04,610 INFO L208 MainTranslator]: Completed translation [2022-07-19 22:14:04,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:14:04 WrapperNode [2022-07-19 22:14:04,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 22:14:04,612 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 22:14:04,612 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 22:14:04,612 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 22:14:04,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:14:04" (1/1) ... [2022-07-19 22:14:04,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:14:04" (1/1) ... [2022-07-19 22:14:04,714 INFO L137 Inliner]: procedures = 679, calls = 1048, calls flagged for inlining = 52, calls inlined = 6, statements flattened = 152 [2022-07-19 22:14:04,715 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 22:14:04,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 22:14:04,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 22:14:04,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 22:14:04,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:14:04" (1/1) ... [2022-07-19 22:14:04,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:14:04" (1/1) ... [2022-07-19 22:14:04,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:14:04" (1/1) ... [2022-07-19 22:14:04,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:14:04" (1/1) ... [2022-07-19 22:14:04,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:14:04" (1/1) ... [2022-07-19 22:14:04,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:14:04" (1/1) ... [2022-07-19 22:14:04,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:14:04" (1/1) ... [2022-07-19 22:14:04,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 22:14:04,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 22:14:04,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 22:14:04,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 22:14:04,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:14:04" (1/1) ... [2022-07-19 22:14:04,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:14:04,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:14:04,787 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 22:14:04,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 22:14:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 22:14:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 22:14:04,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 22:14:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2022-07-19 22:14:04,814 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2022-07-19 22:14:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 22:14:04,815 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2022-07-19 22:14:04,815 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2022-07-19 22:14:04,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 22:14:04,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 22:14:04,816 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_insert_before [2022-07-19 22:14:04,816 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_insert_before [2022-07-19 22:14:04,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 22:14:04,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 22:14:04,817 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 22:14:04,817 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 22:14:04,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 22:14:04,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 22:14:04,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 22:14:04,817 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-19 22:14:04,818 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-19 22:14:04,818 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2022-07-19 22:14:04,818 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2022-07-19 22:14:04,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 22:14:04,984 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 22:14:04,985 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 22:14:05,202 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 22:14:05,207 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 22:14:05,208 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 22:14:05,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:14:05 BoogieIcfgContainer [2022-07-19 22:14:05,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 22:14:05,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 22:14:05,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 22:14:05,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 22:14:05,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 10:14:03" (1/3) ... [2022-07-19 22:14:05,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4228433d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:14:05, skipping insertion in model container [2022-07-19 22:14:05,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:14:04" (2/3) ... [2022-07-19 22:14:05,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4228433d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:14:05, skipping insertion in model container [2022-07-19 22:14:05,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:14:05" (3/3) ... [2022-07-19 22:14:05,215 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_push_front_harness.i [2022-07-19 22:14:05,225 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 22:14:05,226 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 22:14:05,261 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 22:14:05,265 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@424214a3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@a8a2418 [2022-07-19 22:14:05,265 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 22:14:05,269 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 67 states have (on average 1.2835820895522387) internal successors, (86), 68 states have internal predecessors, (86), 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) [2022-07-19 22:14:05,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-19 22:14:05,276 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:14:05,276 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:14:05,277 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:14:05,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:14:05,280 INFO L85 PathProgramCache]: Analyzing trace with hash 2111829670, now seen corresponding path program 1 times [2022-07-19 22:14:05,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:14:05,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209162943] [2022-07-19 22:14:05,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:14:05,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:14:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:05,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:14:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:05,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:14:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:05,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:14:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:05,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 22:14:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:05,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 22:14:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:05,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:14:05,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:05,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 22:14:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:05,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 22:14:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:05,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:14:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:05,816 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-19 22:14:05,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:14:05,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209162943] [2022-07-19 22:14:05,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209162943] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:14:05,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:14:05,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 22:14:05,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910346327] [2022-07-19 22:14:05,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:14:05,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 22:14:05,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:14:05,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 22:14:05,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 22:14:05,853 INFO L87 Difference]: Start difference. First operand has 104 states, 67 states have (on average 1.2835820895522387) internal successors, (86), 68 states have internal predecessors, (86), 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 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 22:14:05,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:14:05,940 INFO L93 Difference]: Finished difference Result 204 states and 302 transitions. [2022-07-19 22:14:05,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 22:14:05,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 74 [2022-07-19 22:14:05,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:14:05,959 INFO L225 Difference]: With dead ends: 204 [2022-07-19 22:14:05,959 INFO L226 Difference]: Without dead ends: 103 [2022-07-19 22:14:05,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 22:14:05,968 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 3 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:14:05,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 400 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:14:05,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-07-19 22:14:06,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2022-07-19 22:14:06,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 66 states have (on average 1.2272727272727273) internal successors, (81), 67 states have internal predecessors, (81), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-19 22:14:06,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 136 transitions. [2022-07-19 22:14:06,015 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 136 transitions. Word has length 74 [2022-07-19 22:14:06,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:14:06,015 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 136 transitions. [2022-07-19 22:14:06,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 22:14:06,016 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 136 transitions. [2022-07-19 22:14:06,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-19 22:14:06,020 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:14:06,020 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:14:06,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 22:14:06,024 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:14:06,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:14:06,024 INFO L85 PathProgramCache]: Analyzing trace with hash 358576094, now seen corresponding path program 1 times [2022-07-19 22:14:06,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:14:06,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947883697] [2022-07-19 22:14:06,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:14:06,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:14:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:06,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:14:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:06,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:14:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:06,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:14:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:06,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 22:14:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:06,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 22:14:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:06,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:14:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:06,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 22:14:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:06,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 22:14:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:06,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:14:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:06,252 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-19 22:14:06,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:14:06,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947883697] [2022-07-19 22:14:06,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947883697] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:14:06,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218730203] [2022-07-19 22:14:06,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:14:06,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:14:06,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:14:06,291 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:14:06,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 22:14:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:06,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-19 22:14:06,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:14:06,638 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-19 22:14:06,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:14:06,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218730203] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:14:06,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:14:06,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 11 [2022-07-19 22:14:06,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958565272] [2022-07-19 22:14:06,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:14:06,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 22:14:06,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:14:06,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 22:14:06,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 22:14:06,642 INFO L87 Difference]: Start difference. First operand 102 states and 136 transitions. Second operand has 9 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 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) [2022-07-19 22:14:06,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:14:06,836 INFO L93 Difference]: Finished difference Result 194 states and 261 transitions. [2022-07-19 22:14:06,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 22:14:06,836 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 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 74 [2022-07-19 22:14:06,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:14:06,840 INFO L225 Difference]: With dead ends: 194 [2022-07-19 22:14:06,840 INFO L226 Difference]: Without dead ends: 106 [2022-07-19 22:14:06,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-07-19 22:14:06,842 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 137 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:14:06,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 598 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:14:06,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-07-19 22:14:06,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2022-07-19 22:14:06,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 69 states have internal predecessors, (82), 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) [2022-07-19 22:14:06,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 139 transitions. [2022-07-19 22:14:06,868 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 139 transitions. Word has length 74 [2022-07-19 22:14:06,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:14:06,868 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 139 transitions. [2022-07-19 22:14:06,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 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) [2022-07-19 22:14:06,869 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 139 transitions. [2022-07-19 22:14:06,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-19 22:14:06,870 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:14:06,870 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:14:06,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 22:14:07,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:14:07,090 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:14:07,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:14:07,090 INFO L85 PathProgramCache]: Analyzing trace with hash 87330846, now seen corresponding path program 1 times [2022-07-19 22:14:07,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:14:07,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657275815] [2022-07-19 22:14:07,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:14:07,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:14:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:07,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:14:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:07,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:14:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:07,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:14:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:07,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 22:14:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:07,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 22:14:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:07,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 22:14:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:07,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 22:14:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:07,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 22:14:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:07,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 22:14:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:07,232 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-19 22:14:07,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:14:07,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657275815] [2022-07-19 22:14:07,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657275815] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:14:07,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766435961] [2022-07-19 22:14:07,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:14:07,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:14:07,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:14:07,234 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:14:07,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 22:14:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:07,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-19 22:14:07,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:14:07,502 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-19 22:14:07,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:14:07,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766435961] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:14:07,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:14:07,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 12 [2022-07-19 22:14:07,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768834277] [2022-07-19 22:14:07,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:14:07,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 22:14:07,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:14:07,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 22:14:07,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-19 22:14:07,504 INFO L87 Difference]: Start difference. First operand 104 states and 139 transitions. Second operand has 10 states, 8 states have (on average 5.5) internal successors, (44), 9 states have internal predecessors, (44), 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) [2022-07-19 22:14:07,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:14:07,725 INFO L93 Difference]: Finished difference Result 199 states and 268 transitions. [2022-07-19 22:14:07,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 22:14:07,725 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.5) internal successors, (44), 9 states have internal predecessors, (44), 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 76 [2022-07-19 22:14:07,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:14:07,727 INFO L225 Difference]: With dead ends: 199 [2022-07-19 22:14:07,727 INFO L226 Difference]: Without dead ends: 109 [2022-07-19 22:14:07,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-07-19 22:14:07,728 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 140 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:14:07,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 696 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:14:07,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-07-19 22:14:07,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2022-07-19 22:14:07,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 68 states have (on average 1.2205882352941178) internal successors, (83), 70 states have internal predecessors, (83), 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) [2022-07-19 22:14:07,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 140 transitions. [2022-07-19 22:14:07,735 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 140 transitions. Word has length 76 [2022-07-19 22:14:07,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:14:07,736 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 140 transitions. [2022-07-19 22:14:07,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.5) internal successors, (44), 9 states have internal predecessors, (44), 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) [2022-07-19 22:14:07,736 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 140 transitions. [2022-07-19 22:14:07,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-19 22:14:07,737 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:14:07,737 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:14:07,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 22:14:07,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-19 22:14:07,949 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:14:07,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:14:07,950 INFO L85 PathProgramCache]: Analyzing trace with hash 958884107, now seen corresponding path program 1 times [2022-07-19 22:14:07,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:14:07,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514545741] [2022-07-19 22:14:07,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:14:07,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:14:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:07,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:14:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:08,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:14:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:08,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:14:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:08,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:14:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:08,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 22:14:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:08,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 22:14:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:08,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 22:14:08,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:08,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:14:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:08,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 22:14:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:14:08,112 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-19 22:14:08,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:14:08,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514545741] [2022-07-19 22:14:08,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514545741] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:14:08,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:14:08,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 22:14:08,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476314446] [2022-07-19 22:14:08,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:14:08,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 22:14:08,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:14:08,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 22:14:08,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 22:14:08,115 INFO L87 Difference]: Start difference. First operand 105 states and 140 transitions. Second operand has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 7 states have internal predecessors, (40), 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) [2022-07-19 22:14:08,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:14:08,155 INFO L93 Difference]: Finished difference Result 145 states and 186 transitions. [2022-07-19 22:14:08,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 22:14:08,156 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 7 states have internal predecessors, (40), 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 78 [2022-07-19 22:14:08,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:14:08,156 INFO L225 Difference]: With dead ends: 145 [2022-07-19 22:14:08,156 INFO L226 Difference]: Without dead ends: 0 [2022-07-19 22:14:08,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-19 22:14:08,158 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 36 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:14:08,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 228 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:14:08,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-19 22:14:08,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-19 22:14:08,160 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) [2022-07-19 22:14:08,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-19 22:14:08,160 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 78 [2022-07-19 22:14:08,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:14:08,161 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-19 22:14:08,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 7 states have internal predecessors, (40), 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) [2022-07-19 22:14:08,161 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-19 22:14:08,161 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-19 22:14:08,163 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 22:14:08,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 22:14:08,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-19 22:14:08,282 INFO L899 garLoopResultBuilder]: For program point aws_linked_list_node_next_is_validFINAL(lines 4715 4719) no Hoare annotation was computed. [2022-07-19 22:14:08,283 INFO L899 garLoopResultBuilder]: For program point aws_linked_list_node_next_is_validEXIT(lines 4715 4719) no Hoare annotation was computed. [2022-07-19 22:14:08,284 INFO L899 garLoopResultBuilder]: For program point L4718(line 4718) no Hoare annotation was computed. [2022-07-19 22:14:08,284 INFO L899 garLoopResultBuilder]: For program point L4718-3(line 4718) no Hoare annotation was computed. [2022-07-19 22:14:08,284 INFO L899 garLoopResultBuilder]: For program point L4718-2(line 4718) no Hoare annotation was computed. [2022-07-19 22:14:08,284 INFO L899 garLoopResultBuilder]: For program point L4718-5(line 4718) no Hoare annotation was computed. [2022-07-19 22:14:08,284 INFO L902 garLoopResultBuilder]: At program point aws_linked_list_node_next_is_validENTRY(lines 4715 4719) the Hoare annotation is: true [2022-07-19 22:14:08,285 INFO L899 garLoopResultBuilder]: For program point aws_linked_list_node_prev_is_validFINAL(lines 4726 4730) no Hoare annotation was computed. [2022-07-19 22:14:08,285 INFO L899 garLoopResultBuilder]: For program point aws_linked_list_node_prev_is_validEXIT(lines 4726 4730) no Hoare annotation was computed. [2022-07-19 22:14:08,285 INFO L899 garLoopResultBuilder]: For program point L4729-2(line 4729) no Hoare annotation was computed. [2022-07-19 22:14:08,285 INFO L899 garLoopResultBuilder]: For program point L4729-3(line 4729) no Hoare annotation was computed. [2022-07-19 22:14:08,285 INFO L899 garLoopResultBuilder]: For program point L4729(line 4729) no Hoare annotation was computed. [2022-07-19 22:14:08,285 INFO L899 garLoopResultBuilder]: For program point L4729-5(line 4729) no Hoare annotation was computed. [2022-07-19 22:14:08,285 INFO L902 garLoopResultBuilder]: At program point aws_linked_list_node_prev_is_validENTRY(lines 4726 4730) the Hoare annotation is: true [2022-07-19 22:14:08,285 INFO L899 garLoopResultBuilder]: For program point L211-2(lines 210 212) no Hoare annotation was computed. [2022-07-19 22:14:08,285 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 210 212) the Hoare annotation is: true [2022-07-19 22:14:08,286 INFO L899 garLoopResultBuilder]: For program point L211(line 211) no Hoare annotation was computed. [2022-07-19 22:14:08,286 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2022-07-19 22:14:08,286 INFO L899 garLoopResultBuilder]: For program point nondet_uint64_tEXIT(line 266) no Hoare annotation was computed. [2022-07-19 22:14:08,286 INFO L902 garLoopResultBuilder]: At program point nondet_uint64_tENTRY(line 266) the Hoare annotation is: true [2022-07-19 22:14:08,288 INFO L899 garLoopResultBuilder]: For program point nondet_uint64_tFINAL(line 266) no Hoare annotation was computed. [2022-07-19 22:14:08,288 INFO L902 garLoopResultBuilder]: At program point L4923(line 4923) the Hoare annotation is: true [2022-07-19 22:14:08,288 INFO L902 garLoopResultBuilder]: At program point L4922(line 4922) the Hoare annotation is: true [2022-07-19 22:14:08,288 INFO L899 garLoopResultBuilder]: For program point L4923-1(line 4923) no Hoare annotation was computed. [2022-07-19 22:14:08,289 INFO L899 garLoopResultBuilder]: For program point aws_linked_list_insert_beforeFINAL(lines 4909 4924) no Hoare annotation was computed. [2022-07-19 22:14:08,289 INFO L902 garLoopResultBuilder]: At program point L4920-1(line 4920) the Hoare annotation is: true [2022-07-19 22:14:08,289 INFO L899 garLoopResultBuilder]: For program point L4921-2(line 4921) no Hoare annotation was computed. [2022-07-19 22:14:08,289 INFO L899 garLoopResultBuilder]: For program point L4920-2(line 4920) no Hoare annotation was computed. [2022-07-19 22:14:08,290 INFO L902 garLoopResultBuilder]: At program point L4921(line 4921) the Hoare annotation is: true [2022-07-19 22:14:08,290 INFO L902 garLoopResultBuilder]: At program point L4922-1(line 4922) the Hoare annotation is: true [2022-07-19 22:14:08,290 INFO L902 garLoopResultBuilder]: At program point L4920(line 4920) the Hoare annotation is: true [2022-07-19 22:14:08,290 INFO L902 garLoopResultBuilder]: At program point L4921-1(line 4921) the Hoare annotation is: true [2022-07-19 22:14:08,290 INFO L899 garLoopResultBuilder]: For program point L4922-2(line 4922) no Hoare annotation was computed. [2022-07-19 22:14:08,291 INFO L902 garLoopResultBuilder]: At program point L4912-1(line 4912) the Hoare annotation is: true [2022-07-19 22:14:08,291 INFO L899 garLoopResultBuilder]: For program point L4912-2(line 4912) no Hoare annotation was computed. [2022-07-19 22:14:08,291 INFO L902 garLoopResultBuilder]: At program point L4913(lines 4913 4915) the Hoare annotation is: true [2022-07-19 22:14:08,291 INFO L902 garLoopResultBuilder]: At program point L4912(line 4912) the Hoare annotation is: true [2022-07-19 22:14:08,291 INFO L899 garLoopResultBuilder]: For program point L4913-1(lines 4913 4915) no Hoare annotation was computed. [2022-07-19 22:14:08,291 INFO L902 garLoopResultBuilder]: At program point aws_linked_list_insert_beforeENTRY(lines 4909 4924) the Hoare annotation is: true [2022-07-19 22:14:08,291 INFO L899 garLoopResultBuilder]: For program point aws_linked_list_insert_beforeEXIT(lines 4909 4924) no Hoare annotation was computed. [2022-07-19 22:14:08,291 INFO L895 garLoopResultBuilder]: At program point L4990(line 4990) the Hoare annotation is: (and (< 1 |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)) (< 1 |ULTIMATE.start_aws_linked_list_push_front_~node#1.base|) (not (= |ULTIMATE.start_aws_linked_list_push_front_~list#1.base| 0)) (< 0 |#StackHeapBarrier|)) [2022-07-19 22:14:08,292 INFO L899 garLoopResultBuilder]: For program point L4994-1(line 4994) no Hoare annotation was computed. [2022-07-19 22:14:08,292 INFO L895 garLoopResultBuilder]: At program point L4990-1(line 4990) the Hoare annotation is: (and (< 1 |ULTIMATE.start_aws_linked_list_push_front_harness_~#to_add~0#1.base|) (< 1 |ULTIMATE.start_aws_linked_list_push_front_~node#1.base|) (= |ULTIMATE.start_aws_linked_list_push_front_#t~ret402#1| 0) (< 0 |#StackHeapBarrier|)) [2022-07-19 22:14:08,292 INFO L899 garLoopResultBuilder]: For program point L7389-1(line 7389) no Hoare annotation was computed. [2022-07-19 22:14:08,292 INFO L899 garLoopResultBuilder]: For program point L4990-2(line 4990) no Hoare annotation was computed. [2022-07-19 22:14:08,292 INFO L895 garLoopResultBuilder]: At program point L7389(line 7389) the Hoare annotation is: false [2022-07-19 22:14:08,292 INFO L899 garLoopResultBuilder]: For program point L6754(lines 6754 6778) no Hoare annotation was computed. [2022-07-19 22:14:08,292 INFO L895 garLoopResultBuilder]: At program point L4995(line 4995) the Hoare annotation is: false [2022-07-19 22:14:08,293 INFO L895 garLoopResultBuilder]: At program point L4995-1(line 4995) the Hoare annotation is: false [2022-07-19 22:14:08,293 INFO L895 garLoopResultBuilder]: At program point L4991(lines 4991 4993) the Hoare annotation is: false [2022-07-19 22:14:08,293 INFO L895 garLoopResultBuilder]: At program point L7390(line 7390) the Hoare annotation is: false [2022-07-19 22:14:08,293 INFO L899 garLoopResultBuilder]: For program point L4991-1(lines 4991 4993) no Hoare annotation was computed. [2022-07-19 22:14:08,293 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-19 22:14:08,293 INFO L899 garLoopResultBuilder]: For program point L4995-2(line 4995) no Hoare annotation was computed. [2022-07-19 22:14:08,293 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-19 22:14:08,293 INFO L895 garLoopResultBuilder]: At program point L7386(line 7386) the Hoare annotation is: false [2022-07-19 22:14:08,293 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-19 22:14:08,294 INFO L899 garLoopResultBuilder]: For program point L7390-1(line 7390) no Hoare annotation was computed. [2022-07-19 22:14:08,294 INFO L899 garLoopResultBuilder]: For program point L7386-2(line 7386) no Hoare annotation was computed. [2022-07-19 22:14:08,294 INFO L895 garLoopResultBuilder]: At program point L7386-1(line 7386) the Hoare annotation is: false [2022-07-19 22:14:08,294 INFO L899 garLoopResultBuilder]: For program point L7374(lines 7374 7391) no Hoare annotation was computed. [2022-07-19 22:14:08,294 INFO L899 garLoopResultBuilder]: For program point L6767-4(lines 6767 6774) no Hoare annotation was computed. [2022-07-19 22:14:08,294 INFO L895 garLoopResultBuilder]: At program point L6767-3(lines 6767 6774) the Hoare annotation is: (and (< 1 |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)) (< 0 |#StackHeapBarrier|)) [2022-07-19 22:14:08,294 INFO L899 garLoopResultBuilder]: For program point L6767-2(lines 6767 6774) no Hoare annotation was computed. [2022-07-19 22:14:08,295 INFO L899 garLoopResultBuilder]: For program point L6755-1(line 6755) no Hoare annotation was computed. [2022-07-19 22:14:08,295 INFO L899 garLoopResultBuilder]: For program point L4996-1(line 4996) no Hoare annotation was computed. [2022-07-19 22:14:08,295 INFO L895 garLoopResultBuilder]: At program point L6755(line 6755) the Hoare annotation is: (and (< 1 |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)) (< 0 |#StackHeapBarrier|)) [2022-07-19 22:14:08,295 INFO L895 garLoopResultBuilder]: At program point L4996(line 4996) the Hoare annotation is: false [2022-07-19 22:14:08,295 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-19 22:14:08,295 INFO L895 garLoopResultBuilder]: At program point L7387-1(line 7387) the Hoare annotation is: false [2022-07-19 22:14:08,295 INFO L895 garLoopResultBuilder]: At program point L7387(line 7387) the Hoare annotation is: false [2022-07-19 22:14:08,296 INFO L899 garLoopResultBuilder]: For program point L7387-2(line 7387) no Hoare annotation was computed. [2022-07-19 22:14:08,296 INFO L899 garLoopResultBuilder]: For program point L6756-1(line 6756) no Hoare annotation was computed. [2022-07-19 22:14:08,296 INFO L895 garLoopResultBuilder]: At program point L6756(line 6756) the Hoare annotation is: (and (< 1 |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)) (< 0 |#StackHeapBarrier|)) [2022-07-19 22:14:08,296 INFO L902 garLoopResultBuilder]: At program point L7392(line 7392) the Hoare annotation is: true [2022-07-19 22:14:08,296 INFO L899 garLoopResultBuilder]: For program point L7388-2(line 7388) no Hoare annotation was computed. [2022-07-19 22:14:08,296 INFO L895 garLoopResultBuilder]: At program point L7388-1(line 7388) the Hoare annotation is: false [2022-07-19 22:14:08,297 INFO L899 garLoopResultBuilder]: For program point L4989(lines 4989 4997) no Hoare annotation was computed. [2022-07-19 22:14:08,297 INFO L895 garLoopResultBuilder]: At program point L7388(line 7388) the Hoare annotation is: false [2022-07-19 22:14:08,298 INFO L895 garLoopResultBuilder]: At program point L4994(line 4994) the Hoare annotation is: false [2022-07-19 22:14:08,298 INFO L899 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2022-07-19 22:14:08,298 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 222 224) the Hoare annotation is: true [2022-07-19 22:14:08,298 INFO L899 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2022-07-19 22:14:08,298 INFO L899 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2022-07-19 22:14:08,298 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2022-07-19 22:14:08,298 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2022-07-19 22:14:08,299 INFO L899 garLoopResultBuilder]: For program point L4734(lines 4734 4738) no Hoare annotation was computed. [2022-07-19 22:14:08,299 INFO L899 garLoopResultBuilder]: For program point L4751(lines 4751 4761) no Hoare annotation was computed. [2022-07-19 22:14:08,299 INFO L895 garLoopResultBuilder]: At program point L4764(lines 4731 4765) the Hoare annotation is: (or (and (= |aws_linked_list_is_valid_#in~list#1.base| 0) (= |aws_linked_list_is_valid_#in~list#1.base| |aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~list#1.base|) (= |aws_linked_list_is_valid_#in~list#1.base| |aws_linked_list_is_valid_~list#1.base|)) (not (< 0 |#StackHeapBarrier|)) (= |aws_linked_list_is_valid_aws_linked_list_is_valid_deep_#res#1| 0)) [2022-07-19 22:14:08,299 INFO L899 garLoopResultBuilder]: For program point L4694(line 4694) no Hoare annotation was computed. [2022-07-19 22:14:08,299 INFO L899 garLoopResultBuilder]: For program point L4694-3(lines 4694 4695) no Hoare annotation was computed. [2022-07-19 22:14:08,299 INFO L899 garLoopResultBuilder]: For program point L4756-1(lines 4756 4761) no Hoare annotation was computed. [2022-07-19 22:14:08,299 INFO L899 garLoopResultBuilder]: For program point L4694-2(line 4694) no Hoare annotation was computed. [2022-07-19 22:14:08,299 INFO L895 garLoopResultBuilder]: At program point L4756(line 4756) the Hoare annotation is: (or (and (= |aws_linked_list_is_valid_#in~list#1.base| 0) (= |aws_linked_list_is_valid_#in~list#1.base| |aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~list#1.base|) (= |aws_linked_list_is_valid_#in~list#1.base| |aws_linked_list_is_valid_~list#1.base|)) (not (< 0 |#StackHeapBarrier|))) [2022-07-19 22:14:08,300 INFO L899 garLoopResultBuilder]: For program point L4694-8(lines 4694 4696) no Hoare annotation was computed. [2022-07-19 22:14:08,300 INFO L899 garLoopResultBuilder]: For program point L4694-5(lines 4694 4695) no Hoare annotation was computed. [2022-07-19 22:14:08,300 INFO L899 garLoopResultBuilder]: For program point L4694-6(lines 4694 4696) no Hoare annotation was computed. [2022-07-19 22:14:08,300 INFO L899 garLoopResultBuilder]: For program point L4694-11(lines 4694 4704) no Hoare annotation was computed. [2022-07-19 22:14:08,300 INFO L899 garLoopResultBuilder]: For program point L4694-9(lines 4694 4697) no Hoare annotation was computed. [2022-07-19 22:14:08,300 INFO L899 garLoopResultBuilder]: For program point aws_linked_list_is_validEXIT(lines 4691 4708) no Hoare annotation was computed. [2022-07-19 22:14:08,300 INFO L902 garLoopResultBuilder]: At program point aws_linked_list_is_validENTRY(lines 4691 4708) the Hoare annotation is: true [2022-07-19 22:14:08,300 INFO L899 garLoopResultBuilder]: For program point aws_linked_list_is_validFINAL(lines 4691 4708) no Hoare annotation was computed. [2022-07-19 22:14:08,300 INFO L899 garLoopResultBuilder]: For program point L4750-3(lines 4750 4763) no Hoare annotation was computed. [2022-07-19 22:14:08,301 INFO L895 garLoopResultBuilder]: At program point L4750-2(lines 4750 4763) the Hoare annotation is: (or (and (= |aws_linked_list_is_valid_#in~list#1.base| 0) (= |aws_linked_list_is_valid_#in~list#1.base| |aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~list#1.base|) (= |aws_linked_list_is_valid_#in~list#1.base| |aws_linked_list_is_valid_~list#1.base|)) (not (< 0 |#StackHeapBarrier|))) [2022-07-19 22:14:08,305 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-07-19 22:14:08,307 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 22:14:08,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 10:14:08 BoogieIcfgContainer [2022-07-19 22:14:08,324 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 22:14:08,324 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 22:14:08,324 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 22:14:08,324 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 22:14:08,324 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:14:05" (3/4) ... [2022-07-19 22:14:08,326 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 22:14:08,330 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_linked_list_node_next_is_valid [2022-07-19 22:14:08,330 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_uint64_t [2022-07-19 22:14:08,330 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_linked_list_node_prev_is_valid [2022-07-19 22:14:08,330 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_linked_list_insert_before [2022-07-19 22:14:08,330 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-07-19 22:14:08,330 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-19 22:14:08,330 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_linked_list_is_valid [2022-07-19 22:14:08,334 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-07-19 22:14:08,335 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-07-19 22:14:08,335 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 22:14:08,335 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 22:14:08,351 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((list == 0 && list == list) && list == list) || !(0 < unknown-#StackHeapBarrier-unknown)) || \result == 0 [2022-07-19 22:14:08,368 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 22:14:08,368 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 22:14:08,369 INFO L158 Benchmark]: Toolchain (without parser) took 5083.11ms. Allocated memory was 96.5MB in the beginning and 172.0MB in the end (delta: 75.5MB). Free memory was 53.9MB in the beginning and 80.6MB in the end (delta: -26.8MB). Peak memory consumption was 47.6MB. Max. memory is 16.1GB. [2022-07-19 22:14:08,369 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 96.5MB. Free memory was 76.5MB in the beginning and 76.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 22:14:08,369 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1322.04ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 53.7MB in the beginning and 70.8MB in the end (delta: -17.1MB). Peak memory consumption was 47.2MB. Max. memory is 16.1GB. [2022-07-19 22:14:08,369 INFO L158 Benchmark]: Boogie Procedure Inliner took 103.01ms. Allocated memory is still 117.4MB. Free memory was 70.8MB in the beginning and 65.1MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-19 22:14:08,369 INFO L158 Benchmark]: Boogie Preprocessor took 48.53ms. Allocated memory is still 117.4MB. Free memory was 65.1MB in the beginning and 62.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 22:14:08,370 INFO L158 Benchmark]: RCFGBuilder took 444.74ms. Allocated memory is still 117.4MB. Free memory was 62.4MB in the beginning and 68.5MB in the end (delta: -6.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-07-19 22:14:08,370 INFO L158 Benchmark]: TraceAbstraction took 3113.38ms. Allocated memory was 117.4MB in the beginning and 172.0MB in the end (delta: 54.5MB). Free memory was 67.7MB in the beginning and 85.8MB in the end (delta: -18.1MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. [2022-07-19 22:14:08,370 INFO L158 Benchmark]: Witness Printer took 44.22ms. Allocated memory is still 172.0MB. Free memory was 85.8MB in the beginning and 80.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 22:14:08,371 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 96.5MB. Free memory was 76.5MB in the beginning and 76.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1322.04ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 53.7MB in the beginning and 70.8MB in the end (delta: -17.1MB). Peak memory consumption was 47.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 103.01ms. Allocated memory is still 117.4MB. Free memory was 70.8MB in the beginning and 65.1MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.53ms. Allocated memory is still 117.4MB. Free memory was 65.1MB in the beginning and 62.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 444.74ms. Allocated memory is still 117.4MB. Free memory was 62.4MB in the beginning and 68.5MB in the end (delta: -6.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 3113.38ms. Allocated memory was 117.4MB in the beginning and 172.0MB in the end (delta: 54.5MB). Free memory was 67.7MB in the beginning and 85.8MB in the end (delta: -18.1MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. * Witness Printer took 44.22ms. Allocated memory is still 172.0MB. Free memory was 85.8MB in the beginning and 80.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. 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 - PositiveResult [Line: 223]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 104 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.1s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 320 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 316 mSDsluCounter, 1922 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1520 mSDsCounter, 126 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 446 IncrementalHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 126 mSolverCounterUnsat, 402 mSDtfsCounter, 446 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 267 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=3, InterpolantAutomatonStates: 34, 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, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 39 LocationsWithAnnotation, 194 PreInvPairs, 204 NumberOfFragments, 143 HoareAnnotationTreeSize, 194 FomulaSimplifications, 55 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 39 FomulaSimplificationsInter, 91 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 452 NumberOfCodeBlocks, 452 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 446 ConstructedInterpolants, 0 QuantifiedInterpolants, 632 SizeOfPredicates, 11 NumberOfNonLiveVariables, 1333 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 264/282 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: ((list == 0 && list == list) && list == list) || !(0 < unknown-#StackHeapBarrier-unknown) - InvariantResult [Line: 4731]: Loop Invariant Derived loop invariant: (((list == 0 && list == list) && list == list) || !(0 < unknown-#StackHeapBarrier-unknown)) || \result == 0 - InvariantResult [Line: 7392]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6767]: Loop Invariant Derived loop invariant: (1 < to_add && !(list == 0)) && 0 < unknown-#StackHeapBarrier-unknown RESULT: Ultimate proved your program to be correct! [2022-07-19 22:14:08,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 Result: TRUE