./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 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_byte_buf_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 69a4e17497471d2fff231bad199d28dc26e616d1fdaf7fc57a8b45b8dfdd40ce --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:32:52,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:32:52,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:32:52,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:32:52,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:32:52,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:32:52,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:32:52,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:32:52,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:32:52,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:32:52,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:32:52,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:32:52,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:32:52,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:32:52,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:32:52,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:32:52,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:32:52,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:32:52,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:32:52,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:32:52,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:32:52,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:32:52,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:32:52,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:32:52,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:32:52,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:32:52,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:32:52,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:32:52,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:32:52,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:32:52,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:32:52,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:32:52,288 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:32:52,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:32:52,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:32:52,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:32:52,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:32:52,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:32:52,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:32:52,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:32:52,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:32:52,310 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-15 12:32:52,326 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:32:52,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:32:52,327 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:32:52,327 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:32:52,328 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:32:52,328 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:32:52,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:32:52,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:32:52,329 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:32:52,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:32:52,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 12:32:52,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:32:52,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:32:52,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:32:52,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:32:52,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:32:52,330 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:32:52,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:32:52,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:32:52,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:32:52,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:32:52,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:32:52,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:32:52,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:32:52,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:32:52,331 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 12:32:52,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 12:32:52,331 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:32:52,332 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:32:52,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:32:52,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:32:52,332 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69a4e17497471d2fff231bad199d28dc26e616d1fdaf7fc57a8b45b8dfdd40ce [2021-12-15 12:32:52,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:32:52,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:32:52,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:32:52,548 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:32:52,549 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:32:52,550 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i [2021-12-15 12:32:52,600 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e022576c/f778a282487341f6a7365e0966c5ecd8/FLAG71247962e [2021-12-15 12:32:53,159 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:32:53,160 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i [2021-12-15 12:32:53,194 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e022576c/f778a282487341f6a7365e0966c5ecd8/FLAG71247962e [2021-12-15 12:32:53,321 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e022576c/f778a282487341f6a7365e0966c5ecd8 [2021-12-15 12:32:53,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:32:53,324 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:32:53,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:32:53,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:32:53,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:32:53,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:32:53" (1/1) ... [2021-12-15 12:32:53,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ed42fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:32:53, skipping insertion in model container [2021-12-15 12:32:53,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:32:53" (1/1) ... [2021-12-15 12:32:53,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:32:53,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:32:53,669 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_byte_buf_harness.i[4496,4509] [2021-12-15 12:32:53,676 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_byte_buf_harness.i[4556,4569] [2021-12-15 12:32:54,621 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:32:54,622 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:32:54,622 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:32:54,623 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:32:54,623 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:32:54,632 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:32:54,633 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:32:54,634 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:32:54,634 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:32:54,915 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-15 12:32:54,916 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-15 12:32:54,917 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-15 12:32:54,918 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-15 12:32:54,921 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-15 12:32:54,923 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-15 12:32:54,923 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-15 12:32:54,924 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-15 12:32:54,926 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-15 12:32:54,927 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-15 12:32:55,064 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-15 12:32:55,111 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:32:55,111 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:32:55,178 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:32:55,211 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:32:55,219 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_byte_buf_harness.i[4496,4509] [2021-12-15 12:32:55,226 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_byte_buf_harness.i[4556,4569] [2021-12-15 12:32:55,247 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:32:55,248 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:32:55,248 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:32:55,248 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:32:55,249 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:32:55,252 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:32:55,253 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:32:55,254 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:32:55,254 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:32:55,271 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-15 12:32:55,271 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-15 12:32:55,272 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-15 12:32:55,272 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-15 12:32:55,274 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-15 12:32:55,274 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-15 12:32:55,274 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-15 12:32:55,275 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-15 12:32:55,275 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-15 12:32:55,275 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-15 12:32:55,296 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-15 12:32:55,383 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:32:55,384 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:32:55,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:32:55,585 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:32:55,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:32:55 WrapperNode [2021-12-15 12:32:55,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:32:55,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:32:55,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:32:55,587 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:32:55,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:32:55" (1/1) ... [2021-12-15 12:32:55,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:32:55" (1/1) ... [2021-12-15 12:32:55,742 INFO L137 Inliner]: procedures = 693, calls = 2792, calls flagged for inlining = 61, calls inlined = 8, statements flattened = 879 [2021-12-15 12:32:55,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:32:55,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:32:55,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:32:55,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:32:55,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:32:55" (1/1) ... [2021-12-15 12:32:55,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:32:55" (1/1) ... [2021-12-15 12:32:55,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:32:55" (1/1) ... [2021-12-15 12:32:55,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:32:55" (1/1) ... [2021-12-15 12:32:55,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:32:55" (1/1) ... [2021-12-15 12:32:55,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:32:55" (1/1) ... [2021-12-15 12:32:55,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:32:55" (1/1) ... [2021-12-15 12:32:55,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:32:55,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:32:55,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:32:55,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:32:55,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:32:55" (1/1) ... [2021-12-15 12:32:55,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:32:55,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:32:55,925 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) [2021-12-15 12:32:55,976 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 [2021-12-15 12:32:55,991 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2021-12-15 12:32:55,992 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2021-12-15 12:32:55,992 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-12-15 12:32:55,992 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-12-15 12:32:55,992 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2021-12-15 12:32:55,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2021-12-15 12:32:55,992 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-15 12:32:55,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 12:32:55,993 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-15 12:32:55,993 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-15 12:32:55,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 12:32:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 12:32:55,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 12:32:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 12:32:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:32:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 12:32:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:32:55,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:32:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-15 12:32:55,996 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-15 12:32:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-15 12:32:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-15 12:32:55,996 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-15 12:32:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 12:32:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 12:32:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2021-12-15 12:32:55,997 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2021-12-15 12:32:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-15 12:32:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-15 12:32:55,998 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-15 12:32:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-15 12:32:55,998 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-15 12:32:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 12:32:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 12:32:56,213 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:32:56,215 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:32:56,702 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:32:56,709 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 12:32:56,709 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 12:32:56,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:32:56 BoogieIcfgContainer [2021-12-15 12:32:56,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 12:32:56,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 12:32:56,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 12:32:56,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 12:32:56,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 12:32:53" (1/3) ... [2021-12-15 12:32:56,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@176b83d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:32:56, skipping insertion in model container [2021-12-15 12:32:56,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:32:55" (2/3) ... [2021-12-15 12:32:56,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@176b83d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:32:56, skipping insertion in model container [2021-12-15 12:32:56,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:32:56" (3/3) ... [2021-12-15 12:32:56,717 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_eq_byte_buf_harness.i [2021-12-15 12:32:56,722 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 12:32:56,723 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 12:32:56,764 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 12:32:56,770 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 12:32:56,770 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 12:32:56,792 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 88 states have (on average 1.2727272727272727) internal successors, (112), 89 states have internal predecessors, (112), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-12-15 12:32:56,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-15 12:32:56,801 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:32:56,802 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-12-15 12:32:56,803 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:32:56,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:32:56,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1812998439, now seen corresponding path program 1 times [2021-12-15 12:32:56,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:32:56,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937401039] [2021-12-15 12:32:56,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:32:56,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:32:56,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 12:32:56,883 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 12:32:56,887 INFO L158 Benchmark]: Toolchain (without parser) took 3561.67ms. Allocated memory was 113.2MB in the beginning and 245.4MB in the end (delta: 132.1MB). Free memory was 84.5MB in the beginning and 109.9MB in the end (delta: -25.4MB). Peak memory consumption was 106.2MB. Max. memory is 16.1GB. [2021-12-15 12:32:56,887 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory was 59.5MB in the beginning and 59.5MB in the end (delta: 40.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:32:56,888 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2258.67ms. Allocated memory was 113.2MB in the beginning and 182.5MB in the end (delta: 69.2MB). Free memory was 84.5MB in the beginning and 83.5MB in the end (delta: 929.5kB). Peak memory consumption was 82.4MB. Max. memory is 16.1GB. [2021-12-15 12:32:56,888 INFO L158 Benchmark]: Boogie Procedure Inliner took 156.57ms. Allocated memory is still 182.5MB. Free memory was 83.5MB in the beginning and 123.5MB in the end (delta: -40.0MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2021-12-15 12:32:56,888 INFO L158 Benchmark]: Boogie Preprocessor took 100.93ms. Allocated memory is still 182.5MB. Free memory was 123.5MB in the beginning and 127.0MB in the end (delta: -3.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 12:32:56,888 INFO L158 Benchmark]: RCFGBuilder took 864.81ms. Allocated memory was 182.5MB in the beginning and 245.4MB in the end (delta: 62.9MB). Free memory was 127.0MB in the beginning and 124.6MB in the end (delta: 2.4MB). Peak memory consumption was 73.4MB. Max. memory is 16.1GB. [2021-12-15 12:32:56,889 INFO L158 Benchmark]: TraceAbstraction took 174.08ms. Allocated memory is still 245.4MB. Free memory was 123.5MB in the beginning and 109.9MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 12:32:56,890 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory was 59.5MB in the beginning and 59.5MB in the end (delta: 40.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2258.67ms. Allocated memory was 113.2MB in the beginning and 182.5MB in the end (delta: 69.2MB). Free memory was 84.5MB in the beginning and 83.5MB in the end (delta: 929.5kB). Peak memory consumption was 82.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 156.57ms. Allocated memory is still 182.5MB. Free memory was 83.5MB in the beginning and 123.5MB in the end (delta: -40.0MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 100.93ms. Allocated memory is still 182.5MB. Free memory was 123.5MB in the beginning and 127.0MB in the end (delta: -3.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * RCFGBuilder took 864.81ms. Allocated memory was 182.5MB in the beginning and 245.4MB in the end (delta: 62.9MB). Free memory was 127.0MB in the beginning and 124.6MB in the end (delta: 2.4MB). Peak memory consumption was 73.4MB. Max. memory is 16.1GB. * TraceAbstraction took 174.08ms. Allocated memory is still 245.4MB. Free memory was 123.5MB in the beginning and 109.9MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 12:32:56,916 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_byte_buf_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 69a4e17497471d2fff231bad199d28dc26e616d1fdaf7fc57a8b45b8dfdd40ce --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:32:59,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:32:59,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:32:59,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:32:59,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:32:59,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:32:59,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:32:59,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:32:59,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:32:59,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:32:59,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:32:59,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:32:59,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:32:59,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:32:59,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:32:59,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:32:59,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:32:59,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:32:59,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:32:59,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:32:59,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:32:59,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:32:59,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:32:59,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:32:59,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:32:59,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:32:59,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:32:59,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:32:59,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:32:59,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:32:59,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:32:59,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:32:59,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:32:59,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:32:59,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:32:59,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:32:59,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:32:59,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:32:59,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:32:59,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:32:59,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:32:59,289 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-15 12:32:59,318 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:32:59,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:32:59,318 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:32:59,319 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:32:59,319 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:32:59,319 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:32:59,320 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:32:59,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:32:59,321 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:32:59,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:32:59,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:32:59,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:32:59,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:32:59,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:32:59,322 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 12:32:59,322 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 12:32:59,322 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 12:32:59,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:32:59,323 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:32:59,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:32:59,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:32:59,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:32:59,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:32:59,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:32:59,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:32:59,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:32:59,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:32:59,324 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 12:32:59,324 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 12:32:59,325 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:32:59,325 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:32:59,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:32:59,325 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:32:59,325 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 12:32:59,325 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69a4e17497471d2fff231bad199d28dc26e616d1fdaf7fc57a8b45b8dfdd40ce [2021-12-15 12:32:59,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:32:59,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:32:59,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:32:59,635 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:32:59,635 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:32:59,636 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i [2021-12-15 12:32:59,697 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/299ace25f/b9c816b26079460aa6fde3ff35ee9885/FLAG4230322d1 [2021-12-15 12:33:00,237 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:33:00,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i [2021-12-15 12:33:00,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/299ace25f/b9c816b26079460aa6fde3ff35ee9885/FLAG4230322d1 [2021-12-15 12:33:00,443 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/299ace25f/b9c816b26079460aa6fde3ff35ee9885 [2021-12-15 12:33:00,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:33:00,455 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:33:00,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:33:00,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:33:00,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:33:00,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:33:00" (1/1) ... [2021-12-15 12:33:00,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32776751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:33:00, skipping insertion in model container [2021-12-15 12:33:00,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:33:00" (1/1) ... [2021-12-15 12:33:00,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:33:00,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:33:00,879 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_byte_buf_harness.i[4496,4509] [2021-12-15 12:33:00,884 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_byte_buf_harness.i[4556,4569] [2021-12-15 12:33:01,415 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:01,416 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:01,417 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:01,418 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:01,419 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:01,434 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:01,436 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:01,437 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:01,438 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:01,691 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-15 12:33:01,693 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-15 12:33:01,693 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-15 12:33:01,694 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-15 12:33:01,695 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-15 12:33:01,695 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-15 12:33:01,696 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-15 12:33:01,696 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-15 12:33:01,697 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-15 12:33:01,697 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-15 12:33:01,787 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-15 12:33:01,864 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:01,868 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:01,957 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:33:02,001 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-15 12:33:02,056 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:33:02,062 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_byte_buf_harness.i[4496,4509] [2021-12-15 12:33:02,062 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_byte_buf_harness.i[4556,4569] [2021-12-15 12:33:02,095 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:02,096 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:02,097 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:02,097 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:02,098 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:02,111 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:02,111 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:02,112 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:02,112 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:02,137 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-15 12:33:02,137 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-15 12:33:02,138 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-15 12:33:02,138 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-15 12:33:02,139 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-15 12:33:02,140 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-15 12:33:02,140 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-15 12:33:02,140 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-15 12:33:02,140 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-15 12:33:02,141 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-15 12:33:02,154 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-15 12:33:02,206 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:02,206 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:02,248 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:33:02,277 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:33:02,293 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_byte_buf_harness.i[4496,4509] [2021-12-15 12:33:02,293 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_byte_buf_harness.i[4556,4569] [2021-12-15 12:33:02,330 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:02,331 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:02,331 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:02,331 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:02,332 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:02,334 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:02,335 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:02,335 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:02,335 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:02,350 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-15 12:33:02,351 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-15 12:33:02,351 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-15 12:33:02,352 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-15 12:33:02,352 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-15 12:33:02,353 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-15 12:33:02,353 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-15 12:33:02,353 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-15 12:33:02,353 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-15 12:33:02,354 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-15 12:33:02,366 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-15 12:33:02,410 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:02,411 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-15 12:33:02,435 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:33:02,675 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:33:02,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:33:02 WrapperNode [2021-12-15 12:33:02,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:33:02,676 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:33:02,676 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:33:02,676 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:33:02,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:33:02" (1/1) ... [2021-12-15 12:33:02,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:33:02" (1/1) ... [2021-12-15 12:33:02,846 INFO L137 Inliner]: procedures = 713, calls = 2792, calls flagged for inlining = 61, calls inlined = 8, statements flattened = 880 [2021-12-15 12:33:02,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:33:02,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:33:02,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:33:02,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:33:02,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:33:02" (1/1) ... [2021-12-15 12:33:02,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:33:02" (1/1) ... [2021-12-15 12:33:02,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:33:02" (1/1) ... [2021-12-15 12:33:02,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:33:02" (1/1) ... [2021-12-15 12:33:02,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:33:02" (1/1) ... [2021-12-15 12:33:02,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:33:02" (1/1) ... [2021-12-15 12:33:02,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:33:02" (1/1) ... [2021-12-15 12:33:02,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:33:02,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:33:02,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:33:02,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:33:02,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:33:02" (1/1) ... [2021-12-15 12:33:02,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:33:02,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:33:02,964 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) [2021-12-15 12:33:02,992 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 [2021-12-15 12:33:03,004 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2021-12-15 12:33:03,004 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2021-12-15 12:33:03,004 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-12-15 12:33:03,005 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-12-15 12:33:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2021-12-15 12:33:03,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2021-12-15 12:33:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-15 12:33:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 12:33:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-15 12:33:03,005 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-15 12:33:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 12:33:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-15 12:33:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-12-15 12:33:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 12:33:03,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 12:33:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 12:33:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:33:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 12:33:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:33:03,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:33:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-15 12:33:03,007 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-15 12:33:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-15 12:33:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-15 12:33:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-15 12:33:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-15 12:33:03,008 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-15 12:33:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 12:33:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 12:33:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2021-12-15 12:33:03,008 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2021-12-15 12:33:03,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-15 12:33:03,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-15 12:33:03,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-15 12:33:03,009 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-15 12:33:03,009 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-15 12:33:03,009 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-15 12:33:03,010 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-15 12:33:03,233 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:33:03,234 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:33:04,441 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:33:04,449 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 12:33:04,449 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 12:33:04,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:33:04 BoogieIcfgContainer [2021-12-15 12:33:04,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 12:33:04,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 12:33:04,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 12:33:04,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 12:33:04,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 12:33:00" (1/3) ... [2021-12-15 12:33:04,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5a3e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:33:04, skipping insertion in model container [2021-12-15 12:33:04,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:33:02" (2/3) ... [2021-12-15 12:33:04,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5a3e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:33:04, skipping insertion in model container [2021-12-15 12:33:04,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:33:04" (3/3) ... [2021-12-15 12:33:04,463 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_eq_byte_buf_harness.i [2021-12-15 12:33:04,466 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 12:33:04,466 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 12:33:04,507 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 12:33:04,512 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 12:33:04,512 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 12:33:04,525 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 88 states have (on average 1.2727272727272727) internal successors, (112), 89 states have internal predecessors, (112), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-12-15 12:33:04,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-15 12:33:04,533 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:33:04,534 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-12-15 12:33:04,534 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:33:04,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:33:04,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1615832393, now seen corresponding path program 1 times [2021-12-15 12:33:04,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 12:33:04,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [188944386] [2021-12-15 12:33:04,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:33:04,552 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 12:33:04,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 12:33:04,554 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 12:33:04,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 12:33:04,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-15 12:33:04,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 12:33:04,888 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 12:33:04,892 INFO L158 Benchmark]: Toolchain (without parser) took 4436.65ms. Allocated memory was 62.9MB in the beginning and 239.1MB in the end (delta: 176.2MB). Free memory was 38.7MB in the beginning and 169.0MB in the end (delta: -130.4MB). Peak memory consumption was 143.5MB. Max. memory is 16.1GB. [2021-12-15 12:33:04,892 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 50.3MB. Free memory was 31.8MB in the beginning and 31.7MB in the end (delta: 43.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:33:04,893 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2217.95ms. Allocated memory was 62.9MB in the beginning and 153.1MB in the end (delta: 90.2MB). Free memory was 38.5MB in the beginning and 96.0MB in the end (delta: -57.4MB). Peak memory consumption was 70.1MB. Max. memory is 16.1GB. [2021-12-15 12:33:04,893 INFO L158 Benchmark]: Boogie Procedure Inliner took 171.21ms. Allocated memory is still 153.1MB. Free memory was 96.0MB in the beginning and 83.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 12:33:04,893 INFO L158 Benchmark]: Boogie Preprocessor took 91.97ms. Allocated memory is still 153.1MB. Free memory was 83.4MB in the beginning and 75.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 12:33:04,894 INFO L158 Benchmark]: RCFGBuilder took 1511.28ms. Allocated memory was 153.1MB in the beginning and 239.1MB in the end (delta: 86.0MB). Free memory was 75.0MB in the beginning and 83.9MB in the end (delta: -9.0MB). Peak memory consumption was 83.3MB. Max. memory is 16.1GB. [2021-12-15 12:33:04,894 INFO L158 Benchmark]: TraceAbstraction took 437.53ms. Allocated memory is still 239.1MB. Free memory was 83.9MB in the beginning and 169.0MB in the end (delta: -85.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 12:33:04,895 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 50.3MB. Free memory was 31.8MB in the beginning and 31.7MB in the end (delta: 43.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2217.95ms. Allocated memory was 62.9MB in the beginning and 153.1MB in the end (delta: 90.2MB). Free memory was 38.5MB in the beginning and 96.0MB in the end (delta: -57.4MB). Peak memory consumption was 70.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 171.21ms. Allocated memory is still 153.1MB. Free memory was 96.0MB in the beginning and 83.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 91.97ms. Allocated memory is still 153.1MB. Free memory was 83.4MB in the beginning and 75.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1511.28ms. Allocated memory was 153.1MB in the beginning and 239.1MB in the end (delta: 86.0MB). Free memory was 75.0MB in the beginning and 83.9MB in the end (delta: -9.0MB). Peak memory consumption was 83.3MB. Max. memory is 16.1GB. * TraceAbstraction took 437.53ms. Allocated memory is still 239.1MB. Free memory was 83.9MB in the beginning and 169.0MB in the end (delta: -85.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 12:33:04,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable