./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/dll-token-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a31fd051 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/forester-heap/dll-token-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash 820401b0140b0bfb9dffe62418c7fb9ec2170c8bc6edd71581a88d2ffbcfa1c6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 10:36:45,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 10:36:45,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 10:36:45,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 10:36:45,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 10:36:45,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 10:36:45,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 10:36:45,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 10:36:45,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 10:36:45,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 10:36:45,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 10:36:45,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 10:36:45,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 10:36:45,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 10:36:45,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 10:36:45,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 10:36:45,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 10:36:45,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 10:36:45,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 10:36:45,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 10:36:45,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 10:36:45,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 10:36:45,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 10:36:45,329 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 10:36:45,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 10:36:45,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 10:36:45,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 10:36:45,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 10:36:45,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 10:36:45,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 10:36:45,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 10:36:45,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 10:36:45,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 10:36:45,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 10:36:45,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 10:36:45,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 10:36:45,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 10:36:45,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 10:36:45,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 10:36:45,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 10:36:45,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 10:36:45,347 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 10:36:45,372 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 10:36:45,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 10:36:45,373 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 10:36:45,373 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 10:36:45,374 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 10:36:45,374 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 10:36:45,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 10:36:45,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 10:36:45,374 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 10:36:45,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 10:36:45,375 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 10:36:45,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 10:36:45,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 10:36:45,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 10:36:45,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 10:36:45,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 10:36:45,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 10:36:45,376 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 10:36:45,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 10:36:45,376 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 10:36:45,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 10:36:45,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 10:36:45,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 10:36:45,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 10:36:45,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:36:45,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 10:36:45,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 10:36:45,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 10:36:45,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 10:36:45,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 10:36:45,378 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 10:36:45,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 10:36:45,378 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 10:36:45,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 10:36:45,379 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 10:36:45,379 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 820401b0140b0bfb9dffe62418c7fb9ec2170c8bc6edd71581a88d2ffbcfa1c6 [2023-02-15 10:36:45,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 10:36:45,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 10:36:45,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 10:36:45,612 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 10:36:45,613 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 10:36:45,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-token-2.i [2023-02-15 10:36:46,587 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 10:36:46,835 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 10:36:46,836 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-2.i [2023-02-15 10:36:46,847 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c116bf6e/38f464dd1fc442d9ac5ebc85f0a0e74a/FLAGe3c6327ba [2023-02-15 10:36:46,859 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c116bf6e/38f464dd1fc442d9ac5ebc85f0a0e74a [2023-02-15 10:36:46,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 10:36:46,862 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 10:36:46,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 10:36:46,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 10:36:46,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 10:36:46,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:36:46" (1/1) ... [2023-02-15 10:36:46,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51280a21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:36:46, skipping insertion in model container [2023-02-15 10:36:46,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:36:46" (1/1) ... [2023-02-15 10:36:46,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 10:36:46,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 10:36:47,120 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-2.i[22229,22242] [2023-02-15 10:36:47,131 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-2.i[22398,22411] [2023-02-15 10:36:47,132 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-2.i[22489,22502] [2023-02-15 10:36:47,134 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-2.i[22571,22584] [2023-02-15 10:36:47,136 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-2.i[22649,22662] [2023-02-15 10:36:47,137 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-2.i[22795,22808] [2023-02-15 10:36:47,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:36:47,150 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 10:36:47,185 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-2.i[22229,22242] [2023-02-15 10:36:47,189 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-2.i[22398,22411] [2023-02-15 10:36:47,190 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-2.i[22489,22502] [2023-02-15 10:36:47,193 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-2.i[22571,22584] [2023-02-15 10:36:47,195 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-2.i[22649,22662] [2023-02-15 10:36:47,196 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-2.i[22795,22808] [2023-02-15 10:36:47,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:36:47,218 INFO L208 MainTranslator]: Completed translation [2023-02-15 10:36:47,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:36:47 WrapperNode [2023-02-15 10:36:47,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 10:36:47,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 10:36:47,220 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 10:36:47,220 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 10:36:47,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:36:47" (1/1) ... [2023-02-15 10:36:47,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:36:47" (1/1) ... [2023-02-15 10:36:47,244 INFO L138 Inliner]: procedures = 119, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 130 [2023-02-15 10:36:47,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 10:36:47,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 10:36:47,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 10:36:47,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 10:36:47,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:36:47" (1/1) ... [2023-02-15 10:36:47,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:36:47" (1/1) ... [2023-02-15 10:36:47,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:36:47" (1/1) ... [2023-02-15 10:36:47,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:36:47" (1/1) ... [2023-02-15 10:36:47,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:36:47" (1/1) ... [2023-02-15 10:36:47,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:36:47" (1/1) ... [2023-02-15 10:36:47,266 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:36:47" (1/1) ... [2023-02-15 10:36:47,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:36:47" (1/1) ... [2023-02-15 10:36:47,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 10:36:47,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 10:36:47,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 10:36:47,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 10:36:47,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:36:47" (1/1) ... [2023-02-15 10:36:47,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:36:47,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:36:47,300 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) [2023-02-15 10:36:47,309 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 [2023-02-15 10:36:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 10:36:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 10:36:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 10:36:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 10:36:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-15 10:36:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-15 10:36:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 10:36:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 10:36:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 10:36:47,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 10:36:47,392 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 10:36:47,393 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 10:36:47,557 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 10:36:47,561 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 10:36:47,561 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2023-02-15 10:36:47,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:36:47 BoogieIcfgContainer [2023-02-15 10:36:47,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 10:36:47,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 10:36:47,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 10:36:47,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 10:36:47,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 10:36:46" (1/3) ... [2023-02-15 10:36:47,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4852d8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:36:47, skipping insertion in model container [2023-02-15 10:36:47,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:36:47" (2/3) ... [2023-02-15 10:36:47,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4852d8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:36:47, skipping insertion in model container [2023-02-15 10:36:47,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:36:47" (3/3) ... [2023-02-15 10:36:47,568 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-token-2.i [2023-02-15 10:36:47,579 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 10:36:47,579 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-02-15 10:36:47,606 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 10:36:47,610 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@a6173a3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 10:36:47,611 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-02-15 10:36:47,613 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 37 states have (on average 1.8108108108108107) internal successors, (67), 43 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:36:47,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 10:36:47,617 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:36:47,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 10:36:47,618 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-02-15 10:36:47,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:36:47,621 INFO L85 PathProgramCache]: Analyzing trace with hash 890337990, now seen corresponding path program 1 times [2023-02-15 10:36:47,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:36:47,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178917648] [2023-02-15 10:36:47,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:36:47,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:36:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:36:47,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:36:47,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:36:47,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178917648] [2023-02-15 10:36:47,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178917648] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:36:47,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:36:47,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 10:36:47,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438973250] [2023-02-15 10:36:47,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:36:47,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 10:36:47,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:36:47,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 10:36:47,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 10:36:47,934 INFO L87 Difference]: Start difference. First operand has 44 states, 37 states have (on average 1.8108108108108107) internal successors, (67), 43 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:36:47,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:36:47,950 INFO L93 Difference]: Finished difference Result 86 states and 132 transitions. [2023-02-15 10:36:47,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 10:36:47,952 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-15 10:36:47,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:36:47,957 INFO L225 Difference]: With dead ends: 86 [2023-02-15 10:36:47,957 INFO L226 Difference]: Without dead ends: 39 [2023-02-15 10:36:47,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 10:36:47,962 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:36:47,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:36:47,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-02-15 10:36:47,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-02-15 10:36:47,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:36:47,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2023-02-15 10:36:47,985 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 6 [2023-02-15 10:36:47,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:36:47,986 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2023-02-15 10:36:47,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:36:47,986 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2023-02-15 10:36:47,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 10:36:47,986 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:36:47,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 10:36:47,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 10:36:47,987 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-02-15 10:36:47,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:36:47,988 INFO L85 PathProgramCache]: Analyzing trace with hash 889571369, now seen corresponding path program 1 times [2023-02-15 10:36:47,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:36:47,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301567681] [2023-02-15 10:36:47,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:36:47,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:36:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:36:48,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:36:48,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:36:48,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301567681] [2023-02-15 10:36:48,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301567681] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:36:48,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:36:48,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 10:36:48,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731292246] [2023-02-15 10:36:48,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:36:48,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 10:36:48,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:36:48,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 10:36:48,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 10:36:48,397 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:36:48,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:36:48,441 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2023-02-15 10:36:48,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 10:36:48,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-15 10:36:48,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:36:48,442 INFO L225 Difference]: With dead ends: 39 [2023-02-15 10:36:48,442 INFO L226 Difference]: Without dead ends: 37 [2023-02-15 10:36:48,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 10:36:48,443 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:36:48,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 75 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:36:48,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-15 10:36:48,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-02-15 10:36:48,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.21875) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:36:48,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2023-02-15 10:36:48,447 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 6 [2023-02-15 10:36:48,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:36:48,447 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2023-02-15 10:36:48,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:36:48,448 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2023-02-15 10:36:48,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-15 10:36:48,448 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:36:48,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:36:48,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 10:36:48,448 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-02-15 10:36:48,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:36:48,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1806865149, now seen corresponding path program 1 times [2023-02-15 10:36:48,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:36:48,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136497748] [2023-02-15 10:36:48,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:36:48,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:36:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:36:48,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:36:48,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:36:48,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136497748] [2023-02-15 10:36:48,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136497748] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:36:48,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:36:48,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 10:36:48,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436612041] [2023-02-15 10:36:48,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:36:48,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 10:36:48,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:36:48,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 10:36:48,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 10:36:48,534 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:36:48,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:36:48,595 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2023-02-15 10:36:48,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 10:36:48,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-15 10:36:48,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:36:48,596 INFO L225 Difference]: With dead ends: 63 [2023-02-15 10:36:48,597 INFO L226 Difference]: Without dead ends: 61 [2023-02-15 10:36:48,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 10:36:48,598 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 76 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:36:48,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 48 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:36:48,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-02-15 10:36:48,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 35. [2023-02-15 10:36:48,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:36:48,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2023-02-15 10:36:48,604 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 7 [2023-02-15 10:36:48,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:36:48,605 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2023-02-15 10:36:48,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:36:48,605 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2023-02-15 10:36:48,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 10:36:48,606 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:36:48,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:36:48,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-15 10:36:48,607 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-02-15 10:36:48,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:36:48,609 INFO L85 PathProgramCache]: Analyzing trace with hash -913382283, now seen corresponding path program 1 times [2023-02-15 10:36:48,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:36:48,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869786874] [2023-02-15 10:36:48,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:36:48,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:36:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:36:48,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:36:48,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:36:48,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869786874] [2023-02-15 10:36:48,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869786874] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:36:48,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:36:48,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 10:36:48,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284417827] [2023-02-15 10:36:48,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:36:48,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 10:36:48,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:36:48,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 10:36:48,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 10:36:48,692 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:36:48,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:36:48,772 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2023-02-15 10:36:48,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 10:36:48,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-15 10:36:48,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:36:48,773 INFO L225 Difference]: With dead ends: 35 [2023-02-15 10:36:48,774 INFO L226 Difference]: Without dead ends: 33 [2023-02-15 10:36:48,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 10:36:48,779 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 3 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 10:36:48,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 90 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 10:36:48,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-15 10:36:48,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-02-15 10:36:48,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:36:48,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2023-02-15 10:36:48,788 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 12 [2023-02-15 10:36:48,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:36:48,788 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2023-02-15 10:36:48,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:36:48,789 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2023-02-15 10:36:48,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 10:36:48,789 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:36:48,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:36:48,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-15 10:36:48,790 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-02-15 10:36:48,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:36:48,790 INFO L85 PathProgramCache]: Analyzing trace with hash -913344547, now seen corresponding path program 1 times [2023-02-15 10:36:48,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:36:48,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147187845] [2023-02-15 10:36:48,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:36:48,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:36:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:36:49,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:36:49,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:36:49,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147187845] [2023-02-15 10:36:49,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147187845] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:36:49,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:36:49,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-15 10:36:49,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121781970] [2023-02-15 10:36:49,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:36:49,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 10:36:49,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:36:49,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 10:36:49,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-15 10:36:49,324 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:36:49,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:36:49,479 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2023-02-15 10:36:49,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 10:36:49,480 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-15 10:36:49,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:36:49,480 INFO L225 Difference]: With dead ends: 50 [2023-02-15 10:36:49,480 INFO L226 Difference]: Without dead ends: 48 [2023-02-15 10:36:49,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-02-15 10:36:49,481 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 43 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 10:36:49,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 93 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 10:36:49,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-02-15 10:36:49,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2023-02-15 10:36:49,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:36:49,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2023-02-15 10:36:49,485 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 12 [2023-02-15 10:36:49,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:36:49,486 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2023-02-15 10:36:49,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:36:49,486 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2023-02-15 10:36:49,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 10:36:49,486 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:36:49,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:36:49,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-15 10:36:49,486 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-02-15 10:36:49,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:36:49,487 INFO L85 PathProgramCache]: Analyzing trace with hash -313255267, now seen corresponding path program 1 times [2023-02-15 10:36:49,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:36:49,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475071034] [2023-02-15 10:36:49,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:36:49,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:36:49,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 10:36:49,517 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 10:36:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 10:36:49,539 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 10:36:49,539 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-15 10:36:49,540 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-02-15 10:36:49,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-02-15 10:36:49,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-02-15 10:36:49,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-02-15 10:36:49,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-02-15 10:36:49,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-02-15 10:36:49,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-15 10:36:49,544 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-02-15 10:36:49,546 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 10:36:49,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 10:36:49 BoogieIcfgContainer [2023-02-15 10:36:49,560 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 10:36:49,561 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 10:36:49,561 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 10:36:49,561 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 10:36:49,561 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:36:47" (3/4) ... [2023-02-15 10:36:49,562 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-15 10:36:49,583 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 10:36:49,584 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 10:36:49,584 INFO L158 Benchmark]: Toolchain (without parser) took 2722.40ms. Allocated memory was 136.3MB in the beginning and 167.8MB in the end (delta: 31.5MB). Free memory was 107.2MB in the beginning and 72.7MB in the end (delta: 34.5MB). Peak memory consumption was 68.0MB. Max. memory is 16.1GB. [2023-02-15 10:36:49,584 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 136.3MB. Free memory is still 111.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 10:36:49,584 INFO L158 Benchmark]: CACSL2BoogieTranslator took 355.29ms. Allocated memory is still 136.3MB. Free memory was 106.8MB in the beginning and 88.8MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-02-15 10:36:49,585 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.53ms. Allocated memory is still 136.3MB. Free memory was 88.8MB in the beginning and 86.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 10:36:49,585 INFO L158 Benchmark]: Boogie Preprocessor took 23.44ms. Allocated memory is still 136.3MB. Free memory was 86.8MB in the beginning and 85.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 10:36:49,585 INFO L158 Benchmark]: RCFGBuilder took 293.27ms. Allocated memory is still 136.3MB. Free memory was 85.1MB in the beginning and 67.9MB in the end (delta: 17.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-02-15 10:36:49,585 INFO L158 Benchmark]: TraceAbstraction took 1996.45ms. Allocated memory was 136.3MB in the beginning and 167.8MB in the end (delta: 31.5MB). Free memory was 67.5MB in the beginning and 74.8MB in the end (delta: -7.3MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. [2023-02-15 10:36:49,586 INFO L158 Benchmark]: Witness Printer took 23.24ms. Allocated memory is still 167.8MB. Free memory was 74.8MB in the beginning and 72.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 10:36:49,587 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 136.3MB. Free memory is still 111.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 355.29ms. Allocated memory is still 136.3MB. Free memory was 106.8MB in the beginning and 88.8MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.53ms. Allocated memory is still 136.3MB. Free memory was 88.8MB in the beginning and 86.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.44ms. Allocated memory is still 136.3MB. Free memory was 86.8MB in the beginning and 85.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 293.27ms. Allocated memory is still 136.3MB. Free memory was 85.1MB in the beginning and 67.9MB in the end (delta: 17.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1996.45ms. Allocated memory was 136.3MB in the beginning and 167.8MB in the end (delta: 31.5MB). Free memory was 67.5MB in the beginning and 74.8MB in the end (delta: -7.3MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. * Witness Printer took 23.24ms. Allocated memory is still 167.8MB. Free memory was 74.8MB in the beginning and 72.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1037]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1004] SLL* head = malloc(sizeof(SLL)); [L1005] head->next = ((void*)0) [L1006] head->prev = ((void*)0) [L1007] head->data = 0 [L1009] SLL* x = head; VAL [head={-1:0}, x={-1:0}] [L1012] COND FALSE !(__VERIFIER_nondet_int()) [L1021] x->data = 1 [L1022] x->next = malloc(sizeof(SLL)) [L1023] EXPR x->next [L1023] x->next->prev = x [L1024] EXPR x->next [L1024] x->next->data = 2 [L1026] x = head VAL [head={-1:0}, x={-1:0}] [L1028] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, x={-1:0}] [L1030] EXPR x->data VAL [head={-1:0}, x={-1:0}, x->data=1] [L1030] COND FALSE !(1 != x->data) [L1035] EXPR x->data VAL [head={-1:0}, x={-1:0}, x->data=1] [L1035] COND FALSE !(!(1 == x->data)) [L1036] EXPR x->next [L1036] x = x->next [L1037] EXPR x->data VAL [head={-1:0}, x={-2:0}, x->data=2] [L1037] COND TRUE !(2 != x->data) [L1037] reach_error() VAL [head={-1:0}, x={-2:0}] - UnprovableResult [Line: 1019]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1035]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 129 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 129 mSDsluCounter, 352 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 193 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 167 IncrementalHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 159 mSDtfsCounter, 167 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 32 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 239 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-02-15 10:36:49,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE