./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_string_eq_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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_string_eq_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 8b61e347701f0c89420e753e852eb314cc29dd4fd4a4715a05b300c448d0ac03 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:58:20,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:58:20,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:58:20,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:58:20,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:58:20,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:58:20,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:58:20,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:58:20,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:58:20,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:58:20,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:58:20,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:58:20,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:58:20,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:58:20,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:58:21,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:58:21,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:58:21,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:58:21,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:58:21,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:58:21,016 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:58:21,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:58:21,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:58:21,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:58:21,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:58:21,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:58:21,025 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:58:21,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:58:21,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:58:21,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:58:21,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:58:21,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:58:21,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:58:21,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:58:21,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:58:21,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:58:21,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:58:21,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:58:21,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:58:21,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:58:21,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:58:21,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:58:21,037 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 22:58:21,066 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:58:21,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:58:21,067 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:58:21,068 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:58:21,068 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:58:21,069 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:58:21,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:58:21,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:58:21,069 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:58:21,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:58:21,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:58:21,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:58:21,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:58:21,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:58:21,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:58:21,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:58:21,072 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:58:21,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:58:21,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:58:21,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:58:21,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:58:21,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:58:21,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:58:21,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:58:21,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:58:21,074 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:58:21,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:58:21,074 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:58:21,074 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:58:21,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:58:21,075 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b61e347701f0c89420e753e852eb314cc29dd4fd4a4715a05b300c448d0ac03 [2022-07-13 22:58:21,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:58:21,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:58:21,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:58:21,357 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:58:21,358 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:58:21,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_string_eq_harness.i [2022-07-13 22:58:21,413 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e844a23a5/65fbe77f31b84157810b24e1f98e4338/FLAG513ee97e0 [2022-07-13 22:58:22,146 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:58:22,147 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_eq_harness.i [2022-07-13 22:58:22,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e844a23a5/65fbe77f31b84157810b24e1f98e4338/FLAG513ee97e0 [2022-07-13 22:58:22,394 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e844a23a5/65fbe77f31b84157810b24e1f98e4338 [2022-07-13 22:58:22,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:58:22,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:58:22,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:58:22,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:58:22,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:58:22,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:58:22" (1/1) ... [2022-07-13 22:58:22,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ccd1e94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:58:22, skipping insertion in model container [2022-07-13 22:58:22,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:58:22" (1/1) ... [2022-07-13 22:58:22,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:58:22,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:58:22,791 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_string_eq_harness.i[4487,4500] [2022-07-13 22:58:22,798 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_string_eq_harness.i[4547,4560] [2022-07-13 22:58:23,831 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:23,835 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:23,836 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:23,837 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:23,838 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:23,853 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:23,854 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:23,855 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:23,856 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:24,157 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:58:24,158 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:58:24,159 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:58:24,165 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:58:24,166 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:58:24,167 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:58:24,167 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:58:24,168 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:58:24,169 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:58:24,169 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:58:24,273 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:58:24,441 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:24,441 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:24,480 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:58:24,538 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:58:24,550 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_string_eq_harness.i[4487,4500] [2022-07-13 22:58:24,551 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_string_eq_harness.i[4547,4560] [2022-07-13 22:58:24,575 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:24,576 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:24,576 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:24,576 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:24,577 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:24,581 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:24,585 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:24,586 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:24,587 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:24,621 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:58:24,622 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:58:24,623 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:58:24,623 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:58:24,624 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:58:24,624 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:58:24,625 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:58:24,625 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:58:24,626 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:58:24,626 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:58:24,645 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:58:24,706 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:24,706 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:24,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:58:24,888 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:58:24,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:58:24 WrapperNode [2022-07-13 22:58:24,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:58:24,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:58:24,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:58:24,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:58:24,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:58:24" (1/1) ... [2022-07-13 22:58:24,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:58:24" (1/1) ... [2022-07-13 22:58:25,074 INFO L137 Inliner]: procedures = 681, calls = 2273, calls flagged for inlining = 58, calls inlined = 6, statements flattened = 385 [2022-07-13 22:58:25,080 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:58:25,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:58:25,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:58:25,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:58:25,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:58:24" (1/1) ... [2022-07-13 22:58:25,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:58:24" (1/1) ... [2022-07-13 22:58:25,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:58:24" (1/1) ... [2022-07-13 22:58:25,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:58:24" (1/1) ... [2022-07-13 22:58:25,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:58:24" (1/1) ... [2022-07-13 22:58:25,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:58:24" (1/1) ... [2022-07-13 22:58:25,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:58:24" (1/1) ... [2022-07-13 22:58:25,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:58:25,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:58:25,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:58:25,173 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:58:25,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:58:24" (1/1) ... [2022-07-13 22:58:25,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:58:25,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:58:25,209 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) [2022-07-13 22:58:25,229 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 [2022-07-13 22:58:25,245 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2022-07-13 22:58:25,245 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2022-07-13 22:58:25,245 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2022-07-13 22:58:25,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2022-07-13 22:58:25,246 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-13 22:58:25,246 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-13 22:58:25,246 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-13 22:58:25,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:58:25,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 22:58:25,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 22:58:25,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:58:25,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:58:25,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 22:58:25,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:58:25,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:58:25,249 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-13 22:58:25,249 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-13 22:58:25,250 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 22:58:25,250 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 22:58:25,250 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2022-07-13 22:58:25,250 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2022-07-13 22:58:25,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 22:58:25,250 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-13 22:58:25,250 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-13 22:58:25,250 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-13 22:58:25,251 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-13 22:58:25,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:58:25,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:58:25,525 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:58:25,527 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:58:25,950 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:58:25,956 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:58:25,957 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 22:58:25,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:58:25 BoogieIcfgContainer [2022-07-13 22:58:25,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:58:25,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:58:25,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:58:25,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:58:25,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:58:22" (1/3) ... [2022-07-13 22:58:25,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9d6930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:58:25, skipping insertion in model container [2022-07-13 22:58:25,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:58:24" (2/3) ... [2022-07-13 22:58:25,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9d6930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:58:25, skipping insertion in model container [2022-07-13 22:58:25,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:58:25" (3/3) ... [2022-07-13 22:58:25,977 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_eq_harness.i [2022-07-13 22:58:25,990 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:58:25,991 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:58:26,076 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:58:26,085 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@5eff0dfb, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@373fc4dc [2022-07-13 22:58:26,088 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 22:58:26,094 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 66 states have internal predecessors, (81), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-13 22:58:26,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-13 22:58:26,104 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:58:26,105 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 22:58:26,105 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:58:26,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:58:26,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1135633648, now seen corresponding path program 1 times [2022-07-13 22:58:26,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:58:26,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125059494] [2022-07-13 22:58:26,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:58:26,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:58:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:26,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:58:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:26,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:58:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:26,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:58:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:26,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:58:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:26,582 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 22:58:26,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:58:26,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125059494] [2022-07-13 22:58:26,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125059494] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:58:26,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:58:26,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 22:58:26,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988066735] [2022-07-13 22:58:26,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:58:26,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 22:58:26,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:58:26,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 22:58:26,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 22:58:26,622 INFO L87 Difference]: Start difference. First operand has 102 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 66 states have internal predecessors, (81), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 22:58:26,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:58:26,658 INFO L93 Difference]: Finished difference Result 199 states and 274 transitions. [2022-07-13 22:58:26,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 22:58:26,661 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-07-13 22:58:26,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:58:26,668 INFO L225 Difference]: With dead ends: 199 [2022-07-13 22:58:26,668 INFO L226 Difference]: Without dead ends: 97 [2022-07-13 22:58:26,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 22:58:26,675 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:58:26,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:58:26,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-07-13 22:58:26,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-07-13 22:58:26,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 62 states have internal predecessors, (74), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-13 22:58:26,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 125 transitions. [2022-07-13 22:58:26,714 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 125 transitions. Word has length 35 [2022-07-13 22:58:26,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:58:26,715 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 125 transitions. [2022-07-13 22:58:26,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 22:58:26,716 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 125 transitions. [2022-07-13 22:58:26,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-13 22:58:26,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:58:26,718 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 22:58:26,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:58:26,718 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:58:26,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:58:26,719 INFO L85 PathProgramCache]: Analyzing trace with hash -157446480, now seen corresponding path program 1 times [2022-07-13 22:58:26,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:58:26,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503108600] [2022-07-13 22:58:26,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:58:26,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:58:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:26,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:58:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:26,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:58:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:26,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:58:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:26,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:58:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:26,928 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 22:58:26,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:58:26,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503108600] [2022-07-13 22:58:26,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503108600] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:58:26,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:58:26,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:58:26,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004503855] [2022-07-13 22:58:26,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:58:26,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:58:26,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:58:26,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:58:26,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:58:26,932 INFO L87 Difference]: Start difference. First operand 97 states and 125 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 22:58:26,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:58:26,968 INFO L93 Difference]: Finished difference Result 155 states and 202 transitions. [2022-07-13 22:58:26,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 22:58:26,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-07-13 22:58:26,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:58:26,970 INFO L225 Difference]: With dead ends: 155 [2022-07-13 22:58:26,971 INFO L226 Difference]: Without dead ends: 97 [2022-07-13 22:58:26,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:58:26,972 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 10 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:58:26,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 373 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:58:26,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-07-13 22:58:26,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-07-13 22:58:26,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 61 states have (on average 1.1967213114754098) internal successors, (73), 62 states have internal predecessors, (73), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-13 22:58:26,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 124 transitions. [2022-07-13 22:58:26,985 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 124 transitions. Word has length 35 [2022-07-13 22:58:26,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:58:26,985 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 124 transitions. [2022-07-13 22:58:26,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 22:58:26,986 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 124 transitions. [2022-07-13 22:58:26,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-13 22:58:26,988 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:58:26,988 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2022-07-13 22:58:26,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:58:26,988 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:58:26,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:58:26,989 INFO L85 PathProgramCache]: Analyzing trace with hash -798036876, now seen corresponding path program 1 times [2022-07-13 22:58:26,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:58:26,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669726901] [2022-07-13 22:58:26,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:58:26,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:58:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:27,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:58:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:27,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:58:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:27,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:58:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:27,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:58:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:27,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:58:27,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:27,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:58:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:27,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 22:58:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:27,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 22:58:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:27,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 22:58:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:27,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 22:58:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:27,701 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-13 22:58:27,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:58:27,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669726901] [2022-07-13 22:58:27,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669726901] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:58:27,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676843282] [2022-07-13 22:58:27,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:58:27,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:58:27,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:58:27,705 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) [2022-07-13 22:58:27,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:58:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:27,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-13 22:58:27,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:58:28,113 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-13 22:58:28,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:58:28,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676843282] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:58:28,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:58:28,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [19] total 24 [2022-07-13 22:58:28,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341031431] [2022-07-13 22:58:28,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:58:28,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 22:58:28,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:58:28,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 22:58:28,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=502, Unknown=0, NotChecked=0, Total=552 [2022-07-13 22:58:28,116 INFO L87 Difference]: Start difference. First operand 97 states and 124 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 11 states have internal predecessors, (38), 5 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-13 22:58:28,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:58:28,463 INFO L93 Difference]: Finished difference Result 181 states and 240 transitions. [2022-07-13 22:58:28,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 22:58:28,464 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 11 states have internal predecessors, (38), 5 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) Word has length 69 [2022-07-13 22:58:28,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:58:28,466 INFO L225 Difference]: With dead ends: 181 [2022-07-13 22:58:28,466 INFO L226 Difference]: Without dead ends: 130 [2022-07-13 22:58:28,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=847, Unknown=0, NotChecked=0, Total=930 [2022-07-13 22:58:28,468 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 78 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 1355 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:58:28,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 1355 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:58:28,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-07-13 22:58:28,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 104. [2022-07-13 22:58:28,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 66 states have (on average 1.196969696969697) internal successors, (79), 67 states have internal predecessors, (79), 28 states have call successors, (28), 9 states have call predecessors, (28), 9 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-13 22:58:28,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 134 transitions. [2022-07-13 22:58:28,487 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 134 transitions. Word has length 69 [2022-07-13 22:58:28,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:58:28,488 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 134 transitions. [2022-07-13 22:58:28,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 11 states have internal predecessors, (38), 5 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-13 22:58:28,488 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 134 transitions. [2022-07-13 22:58:28,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-13 22:58:28,492 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:58:28,493 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:58:28,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 22:58:28,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:58:28,719 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:58:28,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:58:28,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1866451885, now seen corresponding path program 1 times [2022-07-13 22:58:28,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:58:28,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068565738] [2022-07-13 22:58:28,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:58:28,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:58:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:28,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:58:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:28,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:58:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:29,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:58:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:29,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:58:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:29,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:58:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:29,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:58:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:29,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 22:58:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:29,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 22:58:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:29,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 22:58:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:29,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 22:58:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:29,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:58:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:29,296 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-13 22:58:29,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:58:29,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068565738] [2022-07-13 22:58:29,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068565738] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:58:29,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951099733] [2022-07-13 22:58:29,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:58:29,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:58:29,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:58:29,299 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) [2022-07-13 22:58:29,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:58:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:29,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-13 22:58:29,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:58:29,711 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-13 22:58:29,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:58:29,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951099733] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:58:29,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:58:29,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [17] total 25 [2022-07-13 22:58:29,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884066186] [2022-07-13 22:58:29,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:58:29,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 22:58:29,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:58:29,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 22:58:29,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=547, Unknown=0, NotChecked=0, Total=600 [2022-07-13 22:58:29,714 INFO L87 Difference]: Start difference. First operand 104 states and 134 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 11 states have internal predecessors, (42), 5 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-13 22:58:30,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:58:30,009 INFO L93 Difference]: Finished difference Result 171 states and 223 transitions. [2022-07-13 22:58:30,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 22:58:30,009 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 11 states have internal predecessors, (42), 5 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) Word has length 78 [2022-07-13 22:58:30,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:58:30,011 INFO L225 Difference]: With dead ends: 171 [2022-07-13 22:58:30,011 INFO L226 Difference]: Without dead ends: 133 [2022-07-13 22:58:30,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=849, Unknown=0, NotChecked=0, Total=930 [2022-07-13 22:58:30,013 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 73 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:58:30,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 1473 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:58:30,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-07-13 22:58:30,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 112. [2022-07-13 22:58:30,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 72 states have internal predecessors, (84), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-07-13 22:58:30,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 145 transitions. [2022-07-13 22:58:30,025 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 145 transitions. Word has length 78 [2022-07-13 22:58:30,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:58:30,025 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 145 transitions. [2022-07-13 22:58:30,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 11 states have internal predecessors, (42), 5 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-13 22:58:30,026 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 145 transitions. [2022-07-13 22:58:30,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 22:58:30,028 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:58:30,028 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:58:30,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 22:58:30,252 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,SelfDestructingSolverStorable3 [2022-07-13 22:58:30,253 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:58:30,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:58:30,253 INFO L85 PathProgramCache]: Analyzing trace with hash 277212335, now seen corresponding path program 1 times [2022-07-13 22:58:30,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:58:30,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995741592] [2022-07-13 22:58:30,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:58:30,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:58:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:30,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:58:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:30,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:58:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:30,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:58:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:30,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:58:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:30,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:58:30,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:30,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:58:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:30,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 22:58:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:30,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 22:58:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:30,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 22:58:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:30,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 22:58:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:30,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:58:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:30,465 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-13 22:58:30,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:58:30,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995741592] [2022-07-13 22:58:30,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995741592] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:58:30,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:58:30,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:58:30,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330326060] [2022-07-13 22:58:30,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:58:30,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:58:30,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:58:30,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:58:30,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:58:30,468 INFO L87 Difference]: Start difference. First operand 112 states and 145 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 22:58:30,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:58:30,752 INFO L93 Difference]: Finished difference Result 183 states and 240 transitions. [2022-07-13 22:58:30,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:58:30,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 79 [2022-07-13 22:58:30,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:58:30,754 INFO L225 Difference]: With dead ends: 183 [2022-07-13 22:58:30,754 INFO L226 Difference]: Without dead ends: 127 [2022-07-13 22:58:30,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:58:30,755 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 77 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:58:30,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 280 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 22:58:30,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-07-13 22:58:30,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 109. [2022-07-13 22:58:30,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 69 states have (on average 1.173913043478261) internal successors, (81), 70 states have internal predecessors, (81), 30 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-07-13 22:58:30,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 140 transitions. [2022-07-13 22:58:30,766 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 140 transitions. Word has length 79 [2022-07-13 22:58:30,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:58:30,767 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 140 transitions. [2022-07-13 22:58:30,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 22:58:30,767 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 140 transitions. [2022-07-13 22:58:30,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-13 22:58:30,770 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:58:30,770 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 22:58:30,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 22:58:30,770 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:58:30,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:58:30,771 INFO L85 PathProgramCache]: Analyzing trace with hash 513075010, now seen corresponding path program 1 times [2022-07-13 22:58:30,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:58:30,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625379987] [2022-07-13 22:58:30,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:58:30,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:58:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:30,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:58:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:30,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:58:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:30,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:58:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:30,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:58:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:31,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:58:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:31,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:58:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:31,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 22:58:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:31,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 22:58:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:31,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 22:58:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:31,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:58:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:31,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:58:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:31,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:58:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:31,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:58:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:31,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 22:58:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:31,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 22:58:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:31,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:58:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:31,320 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-13 22:58:31,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:58:31,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625379987] [2022-07-13 22:58:31,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625379987] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:58:31,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288173456] [2022-07-13 22:58:31,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:58:31,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:58:31,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:58:31,324 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:58:31,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:58:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:31,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-13 22:58:31,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:58:31,780 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 32 proven. 9 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-07-13 22:58:31,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:58:31,922 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-13 22:58:31,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288173456] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:58:31,922 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:58:31,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 11] total 26 [2022-07-13 22:58:31,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901797484] [2022-07-13 22:58:31,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:58:31,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:58:31,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:58:31,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:58:31,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=596, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:58:31,925 INFO L87 Difference]: Start difference. First operand 109 states and 140 transitions. Second operand has 26 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 19 states have internal predecessors, (70), 9 states have call successors, (25), 4 states have call predecessors, (25), 7 states have return successors, (24), 12 states have call predecessors, (24), 9 states have call successors, (24) [2022-07-13 22:58:32,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:58:32,554 INFO L93 Difference]: Finished difference Result 142 states and 174 transitions. [2022-07-13 22:58:32,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 22:58:32,555 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 19 states have internal predecessors, (70), 9 states have call successors, (25), 4 states have call predecessors, (25), 7 states have return successors, (24), 12 states have call predecessors, (24), 9 states have call successors, (24) Word has length 103 [2022-07-13 22:58:32,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:58:32,556 INFO L225 Difference]: With dead ends: 142 [2022-07-13 22:58:32,556 INFO L226 Difference]: Without dead ends: 0 [2022-07-13 22:58:32,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=140, Invalid=1266, Unknown=0, NotChecked=0, Total=1406 [2022-07-13 22:58:32,558 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 58 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:58:32,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 303 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 22:58:32,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-13 22:58:32,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-13 22:58:32,559 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) [2022-07-13 22:58:32,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-13 22:58:32,559 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 103 [2022-07-13 22:58:32,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:58:32,560 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 22:58:32,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 19 states have internal predecessors, (70), 9 states have call successors, (25), 4 states have call predecessors, (25), 7 states have return successors, (24), 12 states have call predecessors, (24), 9 states have call successors, (24) [2022-07-13 22:58:32,560 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-13 22:58:32,560 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-13 22:58:32,563 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 22:58:32,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 22:58:32,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:58:32,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-13 22:58:32,954 INFO L895 garLoopResultBuilder]: At program point L6816(lines 6807 6817) the Hoare annotation is: (and (not (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base| 0)) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= (+ (- 16) |ensure_string_is_allocated_bounded_length_~max_size#1|) 0)) (not (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_#res#1.base| 0)) (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 16))) [2022-07-13 22:58:32,955 INFO L899 garLoopResultBuilder]: For program point ensure_string_is_allocated_bounded_lengthEXIT(lines 6801 6805) no Hoare annotation was computed. [2022-07-13 22:58:32,955 INFO L899 garLoopResultBuilder]: For program point L6811-1(lines 6811 6812) no Hoare annotation was computed. [2022-07-13 22:58:32,955 INFO L895 garLoopResultBuilder]: At program point L6811(line 6811) the Hoare annotation is: (and (not (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base| 0)) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= (+ (- 16) |ensure_string_is_allocated_bounded_length_~max_size#1|) 0)) (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 16))) [2022-07-13 22:58:32,955 INFO L899 garLoopResultBuilder]: For program point L6811-5(lines 6811 6812) no Hoare annotation was computed. [2022-07-13 22:58:32,955 INFO L899 garLoopResultBuilder]: For program point L6808-1(line 6808) no Hoare annotation was computed. [2022-07-13 22:58:32,956 INFO L895 garLoopResultBuilder]: At program point L6808(line 6808) the Hoare annotation is: (let ((.cse0 (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 16)))) (and (or (<= 0 (+ (* 18446744073709551616 (div (+ (* (- 1) |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1|) 15) 18446744073709551616)) |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1|)) .cse0) (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= (+ (- 16) |ensure_string_is_allocated_bounded_length_~max_size#1|) 0)) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (or .cse0 (let ((.cse1 (* 18446744073709551616 (div |ensure_string_is_allocated_bounded_length_~len~1#1| 18446744073709551616)))) (<= .cse1 (+ |ensure_string_is_allocated_bounded_length_~len~1#1| (* 18446744073709551616 (div (+ .cse1 15 (* (- 1) |ensure_string_is_allocated_bounded_length_~len~1#1|)) 18446744073709551616)))))) (= |old(#valid)| |#valid|))) [2022-07-13 22:58:32,956 INFO L899 garLoopResultBuilder]: For program point L6811-3(line 6811) no Hoare annotation was computed. [2022-07-13 22:58:32,956 INFO L895 garLoopResultBuilder]: At program point L6811-2(line 6811) the Hoare annotation is: (and (not (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base| 0)) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= (+ (- 16) |ensure_string_is_allocated_bounded_length_~max_size#1|) 0)) (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 16))) [2022-07-13 22:58:32,956 INFO L895 garLoopResultBuilder]: At program point L6802(line 6802) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= (+ (- 16) |ensure_string_is_allocated_bounded_length_~max_size#1|) 0)) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) [2022-07-13 22:58:32,956 INFO L899 garLoopResultBuilder]: For program point L6803-1(line 6803) no Hoare annotation was computed. [2022-07-13 22:58:32,957 INFO L895 garLoopResultBuilder]: At program point L6803(line 6803) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= (+ (- 16) |ensure_string_is_allocated_bounded_length_~max_size#1|) 0)) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) [2022-07-13 22:58:32,957 INFO L895 garLoopResultBuilder]: At program point ensure_string_is_allocated_bounded_lengthENTRY(lines 6801 6805) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) [2022-07-13 22:58:32,957 INFO L899 garLoopResultBuilder]: For program point L6802-1(line 6802) no Hoare annotation was computed. [2022-07-13 22:58:32,957 INFO L899 garLoopResultBuilder]: For program point ensure_string_is_allocated_bounded_lengthFINAL(lines 6801 6805) no Hoare annotation was computed. [2022-07-13 22:58:32,957 INFO L895 garLoopResultBuilder]: At program point bounded_mallocENTRY(lines 6883 6888) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2022-07-13 22:58:32,957 INFO L899 garLoopResultBuilder]: For program point bounded_mallocFINAL(lines 6883 6888) no Hoare annotation was computed. [2022-07-13 22:58:32,958 INFO L899 garLoopResultBuilder]: For program point bounded_mallocEXIT(lines 6883 6888) no Hoare annotation was computed. [2022-07-13 22:58:32,958 INFO L899 garLoopResultBuilder]: For program point L6884-1(lines 6884 6886) no Hoare annotation was computed. [2022-07-13 22:58:32,958 INFO L895 garLoopResultBuilder]: At program point L6884(lines 6884 6886) the Hoare annotation is: (and (= |bounded_malloc_#in~size| bounded_malloc_~size) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2022-07-13 22:58:32,958 INFO L902 garLoopResultBuilder]: At program point aws_array_eqENTRY(lines 8019 8039) the Hoare annotation is: true [2022-07-13 22:58:32,958 INFO L899 garLoopResultBuilder]: For program point L8032(lines 8032 8036) no Hoare annotation was computed. [2022-07-13 22:58:32,958 INFO L899 garLoopResultBuilder]: For program point aws_array_eqEXIT(lines 8019 8039) no Hoare annotation was computed. [2022-07-13 22:58:32,958 INFO L899 garLoopResultBuilder]: For program point L8023(lines 8020 8039) no Hoare annotation was computed. [2022-07-13 22:58:32,959 INFO L899 garLoopResultBuilder]: For program point aws_array_eqFINAL(lines 8019 8039) no Hoare annotation was computed. [2022-07-13 22:58:32,959 INFO L902 garLoopResultBuilder]: At program point L8021-1(line 8021) the Hoare annotation is: true [2022-07-13 22:58:32,959 INFO L902 garLoopResultBuilder]: At program point L8021(line 8021) the Hoare annotation is: true [2022-07-13 22:58:32,959 INFO L899 garLoopResultBuilder]: For program point nondet_boolFINAL(line 261) no Hoare annotation was computed. [2022-07-13 22:58:32,959 INFO L899 garLoopResultBuilder]: For program point nondet_boolEXIT(line 261) no Hoare annotation was computed. [2022-07-13 22:58:32,959 INFO L902 garLoopResultBuilder]: At program point nondet_boolENTRY(line 261) the Hoare annotation is: true [2022-07-13 22:58:32,959 INFO L899 garLoopResultBuilder]: For program point L211-2(lines 210 212) no Hoare annotation was computed. [2022-07-13 22:58:32,960 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 210 212) the Hoare annotation is: true [2022-07-13 22:58:32,960 INFO L899 garLoopResultBuilder]: For program point L211(line 211) no Hoare annotation was computed. [2022-07-13 22:58:32,960 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2022-07-13 22:58:32,960 INFO L899 garLoopResultBuilder]: For program point can_fail_allocatorFINAL(lines 6890 6892) no Hoare annotation was computed. [2022-07-13 22:58:32,960 INFO L899 garLoopResultBuilder]: For program point can_fail_allocatorEXIT(lines 6890 6892) no Hoare annotation was computed. [2022-07-13 22:58:32,960 INFO L902 garLoopResultBuilder]: At program point can_fail_allocatorENTRY(lines 6890 6892) the Hoare annotation is: true [2022-07-13 22:58:32,960 INFO L902 garLoopResultBuilder]: At program point aws_string_is_validENTRY(lines 6253 6258) the Hoare annotation is: true [2022-07-13 22:58:32,961 INFO L899 garLoopResultBuilder]: For program point L6257-2(line 6257) no Hoare annotation was computed. [2022-07-13 22:58:32,961 INFO L899 garLoopResultBuilder]: For program point L6257-3(line 6257) no Hoare annotation was computed. [2022-07-13 22:58:32,961 INFO L899 garLoopResultBuilder]: For program point L6257(line 6257) no Hoare annotation was computed. [2022-07-13 22:58:32,961 INFO L899 garLoopResultBuilder]: For program point aws_string_is_validFINAL(lines 6253 6258) no Hoare annotation was computed. [2022-07-13 22:58:32,961 INFO L899 garLoopResultBuilder]: For program point L6257-5(line 6257) no Hoare annotation was computed. [2022-07-13 22:58:32,961 INFO L899 garLoopResultBuilder]: For program point aws_string_is_validEXIT(lines 6253 6258) no Hoare annotation was computed. [2022-07-13 22:58:32,961 INFO L899 garLoopResultBuilder]: For program point nondet_uint64_tEXIT(line 266) no Hoare annotation was computed. [2022-07-13 22:58:32,962 INFO L902 garLoopResultBuilder]: At program point nondet_uint64_tENTRY(line 266) the Hoare annotation is: true [2022-07-13 22:58:32,962 INFO L899 garLoopResultBuilder]: For program point nondet_uint64_tFINAL(line 266) no Hoare annotation was computed. [2022-07-13 22:58:32,962 INFO L899 garLoopResultBuilder]: For program point L7100(lines 7100 7113) no Hoare annotation was computed. [2022-07-13 22:58:32,962 INFO L899 garLoopResultBuilder]: For program point L7414(line 7414) no Hoare annotation was computed. [2022-07-13 22:58:32,962 INFO L895 garLoopResultBuilder]: At program point L8917(line 8917) the Hoare annotation is: false [2022-07-13 22:58:32,962 INFO L899 garLoopResultBuilder]: For program point L8917-1(line 8917) no Hoare annotation was computed. [2022-07-13 22:58:32,962 INFO L895 garLoopResultBuilder]: At program point L7414-4(line 7414) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_harness_~str_a~1#1.offset| 0)) [2022-07-13 22:58:32,963 INFO L899 garLoopResultBuilder]: For program point L7414-3(line 7414) no Hoare annotation was computed. [2022-07-13 22:58:32,963 INFO L895 garLoopResultBuilder]: At program point L7414-2(line 7414) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_harness_~str_a~1#1.offset| 0)) [2022-07-13 22:58:32,963 INFO L899 garLoopResultBuilder]: For program point L7414-5(line 7414) no Hoare annotation was computed. [2022-07-13 22:58:32,963 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-13 22:58:32,963 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-13 22:58:32,963 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-13 22:58:32,963 INFO L899 garLoopResultBuilder]: For program point L7101-1(lines 7100 7113) no Hoare annotation was computed. [2022-07-13 22:58:32,964 INFO L895 garLoopResultBuilder]: At program point L7101(line 7101) the Hoare annotation is: false [2022-07-13 22:58:32,964 INFO L899 garLoopResultBuilder]: For program point L7415(line 7415) no Hoare annotation was computed. [2022-07-13 22:58:32,964 INFO L899 garLoopResultBuilder]: For program point L7415-5(line 7415) no Hoare annotation was computed. [2022-07-13 22:58:32,964 INFO L895 garLoopResultBuilder]: At program point L7415-4(line 7415) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_harness_~str_a~1#1.offset| 0)) [2022-07-13 22:58:32,964 INFO L899 garLoopResultBuilder]: For program point L7415-3(line 7415) no Hoare annotation was computed. [2022-07-13 22:58:32,964 INFO L895 garLoopResultBuilder]: At program point L7415-2(line 7415) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_harness_~str_a~1#1.offset| 0)) [2022-07-13 22:58:32,964 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-13 22:58:32,965 INFO L902 garLoopResultBuilder]: At program point L8923(line 8923) the Hoare annotation is: true [2022-07-13 22:58:32,965 INFO L899 garLoopResultBuilder]: For program point L8919-2(line 8919) no Hoare annotation was computed. [2022-07-13 22:58:32,965 INFO L895 garLoopResultBuilder]: At program point L8915(line 8915) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_harness_~str_a~1#1.offset| 0)) [2022-07-13 22:58:32,965 INFO L899 garLoopResultBuilder]: For program point L7416(lines 7416 7420) no Hoare annotation was computed. [2022-07-13 22:58:32,965 INFO L899 garLoopResultBuilder]: For program point L8915-1(line 8915) no Hoare annotation was computed. [2022-07-13 22:58:32,965 INFO L895 garLoopResultBuilder]: At program point L8919(line 8919) the Hoare annotation is: false [2022-07-13 22:58:32,965 INFO L895 garLoopResultBuilder]: At program point L8919-1(line 8919) the Hoare annotation is: false [2022-07-13 22:58:32,966 INFO L895 garLoopResultBuilder]: At program point L8915-3(line 8915) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_harness_~str_a~1#1.offset| 0)) [2022-07-13 22:58:32,966 INFO L899 garLoopResultBuilder]: For program point L8915-4(line 8915) no Hoare annotation was computed. [2022-07-13 22:58:32,966 INFO L899 garLoopResultBuilder]: For program point L8911(lines 8911 8922) no Hoare annotation was computed. [2022-07-13 22:58:32,966 INFO L899 garLoopResultBuilder]: For program point L8915-5(line 8915) no Hoare annotation was computed. [2022-07-13 22:58:32,966 INFO L899 garLoopResultBuilder]: For program point L7111-1(line 7111) no Hoare annotation was computed. [2022-07-13 22:58:32,966 INFO L895 garLoopResultBuilder]: At program point L7111(line 7111) the Hoare annotation is: false [2022-07-13 22:58:32,966 INFO L899 garLoopResultBuilder]: For program point L7107-1(line 7107) no Hoare annotation was computed. [2022-07-13 22:58:32,967 INFO L895 garLoopResultBuilder]: At program point L7107(line 7107) the Hoare annotation is: false [2022-07-13 22:58:32,967 INFO L899 garLoopResultBuilder]: For program point L7421(lines 7421 7429) no Hoare annotation was computed. [2022-07-13 22:58:32,967 INFO L899 garLoopResultBuilder]: For program point L8916(lines 8916 8921) no Hoare annotation was computed. [2022-07-13 22:58:32,967 INFO L895 garLoopResultBuilder]: At program point L8920(line 8920) the Hoare annotation is: false [2022-07-13 22:58:32,967 INFO L895 garLoopResultBuilder]: At program point L8920-1(line 8920) the Hoare annotation is: false [2022-07-13 22:58:32,967 INFO L899 garLoopResultBuilder]: For program point L8920-2(line 8920) no Hoare annotation was computed. [2022-07-13 22:58:32,967 INFO L899 garLoopResultBuilder]: For program point L8912-3(line 8912) no Hoare annotation was computed. [2022-07-13 22:58:32,968 INFO L899 garLoopResultBuilder]: For program point L8912-5(lines 8912 8913) no Hoare annotation was computed. [2022-07-13 22:58:32,968 INFO L902 garLoopResultBuilder]: At program point L8912(line 8912) the Hoare annotation is: true [2022-07-13 22:58:32,968 INFO L899 garLoopResultBuilder]: For program point L8912-1(lines 8912 8913) no Hoare annotation was computed. [2022-07-13 22:58:32,968 INFO L902 garLoopResultBuilder]: At program point L8912-2(line 8912) the Hoare annotation is: true [2022-07-13 22:58:32,968 INFO L895 garLoopResultBuilder]: At program point L7430(line 7430) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_harness_~str_a~1#1.offset| 0)) [2022-07-13 22:58:32,968 INFO L899 garLoopResultBuilder]: For program point L7108-1(lines 7108 7110) no Hoare annotation was computed. [2022-07-13 22:58:32,968 INFO L895 garLoopResultBuilder]: At program point L7430-2(lines 7412 7431) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_harness_~str_a~1#1.offset| 0)) [2022-07-13 22:58:32,969 INFO L895 garLoopResultBuilder]: At program point L7108(lines 7108 7110) the Hoare annotation is: false [2022-07-13 22:58:32,969 INFO L899 garLoopResultBuilder]: For program point L7430-1(line 7430) no Hoare annotation was computed. [2022-07-13 22:58:32,969 INFO L899 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2022-07-13 22:58:32,969 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 222 224) the Hoare annotation is: true [2022-07-13 22:58:32,969 INFO L899 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2022-07-13 22:58:32,969 INFO L899 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2022-07-13 22:58:32,969 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2022-07-13 22:58:32,970 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2022-07-13 22:58:32,973 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-07-13 22:58:32,974 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 22:58:32,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 10:58:32 BoogieIcfgContainer [2022-07-13 22:58:32,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 22:58:32,987 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 22:58:32,987 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 22:58:32,988 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 22:58:32,988 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:58:25" (3/4) ... [2022-07-13 22:58:32,991 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 22:58:32,996 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ensure_string_is_allocated_bounded_length [2022-07-13 22:58:32,996 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure bounded_malloc [2022-07-13 22:58:32,996 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_array_eq [2022-07-13 22:58:32,997 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_uint64_t [2022-07-13 22:58:32,997 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_bool [2022-07-13 22:58:32,997 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-07-13 22:58:32,997 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-13 22:58:32,997 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure can_fail_allocator [2022-07-13 22:58:32,997 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_string_is_valid [2022-07-13 22:58:33,004 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2022-07-13 22:58:33,005 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-07-13 22:58:33,006 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 22:58:33,006 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 22:58:33,031 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(str == 0) && (\old(max_size) == max_size || -16 + max_size == 0)) && !(\result == 0)) && !(\old(max_size) == 16) [2022-07-13 22:58:33,131 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 22:58:33,131 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 22:58:33,132 INFO L158 Benchmark]: Toolchain (without parser) took 10733.52ms. Allocated memory was 102.8MB in the beginning and 232.8MB in the end (delta: 130.0MB). Free memory was 61.7MB in the beginning and 112.7MB in the end (delta: -51.1MB). Peak memory consumption was 78.5MB. Max. memory is 16.1GB. [2022-07-13 22:58:33,132 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 102.8MB. Free memory is still 57.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 22:58:33,133 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2489.51ms. Allocated memory was 102.8MB in the beginning and 151.0MB in the end (delta: 48.2MB). Free memory was 61.4MB in the beginning and 63.8MB in the end (delta: -2.4MB). Peak memory consumption was 61.7MB. Max. memory is 16.1GB. [2022-07-13 22:58:33,133 INFO L158 Benchmark]: Boogie Procedure Inliner took 189.91ms. Allocated memory is still 151.0MB. Free memory was 63.8MB in the beginning and 97.5MB in the end (delta: -33.7MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2022-07-13 22:58:33,133 INFO L158 Benchmark]: Boogie Preprocessor took 91.45ms. Allocated memory is still 151.0MB. Free memory was 97.5MB in the beginning and 93.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 22:58:33,133 INFO L158 Benchmark]: RCFGBuilder took 786.25ms. Allocated memory is still 151.0MB. Free memory was 93.4MB in the beginning and 59.8MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-07-13 22:58:33,134 INFO L158 Benchmark]: TraceAbstraction took 7026.27ms. Allocated memory was 151.0MB in the beginning and 232.8MB in the end (delta: 81.8MB). Free memory was 58.5MB in the beginning and 131.6MB in the end (delta: -73.1MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2022-07-13 22:58:33,134 INFO L158 Benchmark]: Witness Printer took 144.41ms. Allocated memory is still 232.8MB. Free memory was 131.6MB in the beginning and 112.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-07-13 22:58:33,136 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 102.8MB. Free memory is still 57.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2489.51ms. Allocated memory was 102.8MB in the beginning and 151.0MB in the end (delta: 48.2MB). Free memory was 61.4MB in the beginning and 63.8MB in the end (delta: -2.4MB). Peak memory consumption was 61.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 189.91ms. Allocated memory is still 151.0MB. Free memory was 63.8MB in the beginning and 97.5MB in the end (delta: -33.7MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 91.45ms. Allocated memory is still 151.0MB. Free memory was 97.5MB in the beginning and 93.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 786.25ms. Allocated memory is still 151.0MB. Free memory was 93.4MB in the beginning and 59.8MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 7026.27ms. Allocated memory was 151.0MB in the beginning and 232.8MB in the end (delta: 81.8MB). Free memory was 58.5MB in the beginning and 131.6MB in the end (delta: -73.1MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Witness Printer took 144.41ms. Allocated memory is still 232.8MB. Free memory was 131.6MB in the beginning and 112.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. 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 10 procedures, 102 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.9s, OverallIterations: 6, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 343 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 296 mSDsluCounter, 3915 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3228 mSDsCounter, 187 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1127 IncrementalHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 187 mSolverCounterUnsat, 687 mSDtfsCounter, 1127 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 540 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=4, InterpolantAutomatonStates: 53, 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, 6 MinimizatonAttempts, 65 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 38 LocationsWithAnnotation, 170 PreInvPairs, 191 NumberOfFragments, 300 HoareAnnotationTreeSize, 170 FomulaSimplifications, 14 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 38 FomulaSimplificationsInter, 76 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 649 NumberOfCodeBlocks, 649 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 742 ConstructedInterpolants, 0 QuantifiedInterpolants, 1760 SizeOfPredicates, 24 NumberOfNonLiveVariables, 2638 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 422/476 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: 8923]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7412]: Loop Invariant Derived loop invariant: str_a == 0 && str_a == 0 - InvariantResult [Line: 6807]: Loop Invariant Derived loop invariant: ((!(str == 0) && (\old(max_size) == max_size || -16 + max_size == 0)) && !(\result == 0)) && !(\old(max_size) == 16) RESULT: Ultimate proved your program to be correct! [2022-07-13 22:58:33,176 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