./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg --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 503e46fe74670dc8b1fd2e8b2c5a408fc01c83cb421ff9aefb8796417315d291 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg --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 503e46fe74670dc8b1fd2e8b2c5a408fc01c83cb421ff9aefb8796417315d291 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:48:10,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:48:10,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:48:10,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:48:10,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:48:10,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:48:10,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:48:10,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:48:10,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:48:10,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:48:10,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:48:10,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:48:10,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:48:10,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:48:10,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:48:10,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:48:10,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:48:10,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:48:10,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:48:10,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:48:10,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:48:10,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:48:10,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:48:10,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:48:10,326 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:48:10,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:48:10,327 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:48:10,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:48:10,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:48:10,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:48:10,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:48:10,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:48:10,335 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:48:10,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:48:10,338 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:48:10,338 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:48:10,339 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:48:10,339 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:48:10,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:48:10,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:48:10,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:48:10,343 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:48:10,386 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:48:10,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:48:10,386 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:48:10,386 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:48:10,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:48:10,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:48:10,388 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:48:10,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:48:10,394 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:48:10,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:48:10,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:48:10,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:48:10,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:48:10,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:48:10,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:48:10,396 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:48:10,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:48:10,396 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:48:10,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:48:10,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:48:10,397 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:48:10,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:48:10,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:48:10,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:48:10,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:48:10,398 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:48:10,398 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:48:10,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:48:10,399 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:48:10,400 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:48:10,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:48:10,401 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:48:10,401 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503e46fe74670dc8b1fd2e8b2c5a408fc01c83cb421ff9aefb8796417315d291 [2021-10-28 09:48:10,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:48:10,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:48:10,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:48:10,773 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:48:10,774 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:48:10,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2021-10-28 09:48:10,853 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/data/bb4bc45dc/ae0fb2351dd0414cb64e3d198ba6147f/FLAG9ecda9187 [2021-10-28 09:48:11,499 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:48:11,500 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2021-10-28 09:48:11,523 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/data/bb4bc45dc/ae0fb2351dd0414cb64e3d198ba6147f/FLAG9ecda9187 [2021-10-28 09:48:11,721 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/data/bb4bc45dc/ae0fb2351dd0414cb64e3d198ba6147f [2021-10-28 09:48:11,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:48:11,725 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:48:11,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:48:11,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:48:11,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:48:11,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:48:11" (1/1) ... [2021-10-28 09:48:11,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8f3f2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:11, skipping insertion in model container [2021-10-28 09:48:11,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:48:11" (1/1) ... [2021-10-28 09:48:11,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:48:11,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:48:12,147 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22665,22678] [2021-10-28 09:48:12,151 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22735,22748] [2021-10-28 09:48:12,152 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22799,22812] [2021-10-28 09:48:12,154 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22894,22907] [2021-10-28 09:48:12,155 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22966,22979] [2021-10-28 09:48:12,157 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23105,23118] [2021-10-28 09:48:12,158 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23179,23192] [2021-10-28 09:48:12,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:48:12,173 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:48:12,217 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22665,22678] [2021-10-28 09:48:12,218 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22735,22748] [2021-10-28 09:48:12,218 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22799,22812] [2021-10-28 09:48:12,219 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22894,22907] [2021-10-28 09:48:12,220 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22966,22979] [2021-10-28 09:48:12,221 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23105,23118] [2021-10-28 09:48:12,222 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23179,23192] [2021-10-28 09:48:12,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:48:12,263 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:48:12,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:12 WrapperNode [2021-10-28 09:48:12,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:48:12,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:48:12,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:48:12,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:48:12,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:12" (1/1) ... [2021-10-28 09:48:12,300 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:12" (1/1) ... [2021-10-28 09:48:12,326 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:48:12,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:48:12,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:48:12,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:48:12,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:12" (1/1) ... [2021-10-28 09:48:12,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:12" (1/1) ... [2021-10-28 09:48:12,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:12" (1/1) ... [2021-10-28 09:48:12,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:12" (1/1) ... [2021-10-28 09:48:12,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:12" (1/1) ... [2021-10-28 09:48:12,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:12" (1/1) ... [2021-10-28 09:48:12,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:12" (1/1) ... [2021-10-28 09:48:12,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:48:12,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:48:12,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:48:12,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:48:12,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:12" (1/1) ... [2021-10-28 09:48:12,397 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:48:12,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:12,425 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:12,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:48:12,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:48:12,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:48:12,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:48:12,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:48:12,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:48:12,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:48:12,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:48:12,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:48:12,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:48:12,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:48:12,888 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:48:12,888 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-10-28 09:48:12,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:48:12 BoogieIcfgContainer [2021-10-28 09:48:12,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:48:12,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:48:12,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:48:12,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:48:12,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:48:11" (1/3) ... [2021-10-28 09:48:12,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c6d9090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:48:12, skipping insertion in model container [2021-10-28 09:48:12,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:12" (2/3) ... [2021-10-28 09:48:12,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c6d9090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:48:12, skipping insertion in model container [2021-10-28 09:48:12,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:48:12" (3/3) ... [2021-10-28 09:48:12,914 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2021-10-28 09:48:12,920 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:48:12,921 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-28 09:48:13,008 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:48:13,018 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 [2021-10-28 09:48:13,019 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-28 09:48:13,053 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 39 states have (on average 1.9487179487179487) internal successors, (76), 46 states have internal predecessors, (76), 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) [2021-10-28 09:48:13,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 09:48:13,060 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:48:13,061 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:48:13,061 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:48:13,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:13,068 INFO L85 PathProgramCache]: Analyzing trace with hash 891600134, now seen corresponding path program 1 times [2021-10-28 09:48:13,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:13,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924228635] [2021-10-28 09:48:13,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:13,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:13,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:13,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:48:13,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924228635] [2021-10-28 09:48:13,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924228635] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:48:13,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:48:13,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:48:13,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836127743] [2021-10-28 09:48:13,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:48:13,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:48:13,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:48:13,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:48:13,378 INFO L87 Difference]: Start difference. First operand has 47 states, 39 states have (on average 1.9487179487179487) internal successors, (76), 46 states have internal predecessors, (76), 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) [2021-10-28 09:48:13,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:48:13,398 INFO L93 Difference]: Finished difference Result 92 states and 150 transitions. [2021-10-28 09:48:13,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:48:13,399 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 [2021-10-28 09:48:13,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:48:13,409 INFO L225 Difference]: With dead ends: 92 [2021-10-28 09:48:13,409 INFO L226 Difference]: Without dead ends: 41 [2021-10-28 09:48:13,412 INFO L786 BasicCegarLoop]: 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 [2021-10-28 09:48:13,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-28 09:48:13,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-28 09:48:13,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 40 states have internal predecessors, (44), 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) [2021-10-28 09:48:13,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2021-10-28 09:48:13,445 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 6 [2021-10-28 09:48:13,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:48:13,446 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2021-10-28 09:48:13,446 INFO L471 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) [2021-10-28 09:48:13,446 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2021-10-28 09:48:13,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 09:48:13,447 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:48:13,447 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:48:13,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:48:13,448 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:48:13,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:13,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1806905862, now seen corresponding path program 1 times [2021-10-28 09:48:13,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:13,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728752377] [2021-10-28 09:48:13,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:13,450 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:13,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:13,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:48:13,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728752377] [2021-10-28 09:48:13,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728752377] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:48:13,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:48:13,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:48:13,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696002959] [2021-10-28 09:48:13,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:48:13,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:48:13,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:48:13,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:48:13,577 INFO L87 Difference]: Start difference. First operand 41 states and 44 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) [2021-10-28 09:48:13,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:48:13,685 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2021-10-28 09:48:13,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:48:13,686 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 [2021-10-28 09:48:13,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:48:13,687 INFO L225 Difference]: With dead ends: 47 [2021-10-28 09:48:13,687 INFO L226 Difference]: Without dead ends: 45 [2021-10-28 09:48:13,688 INFO L786 BasicCegarLoop]: 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 [2021-10-28 09:48:13,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-28 09:48:13,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2021-10-28 09:48:13,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 38 states have internal predecessors, (42), 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) [2021-10-28 09:48:13,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-10-28 09:48:13,695 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 7 [2021-10-28 09:48:13,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:48:13,695 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-10-28 09:48:13,696 INFO L471 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) [2021-10-28 09:48:13,696 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-10-28 09:48:13,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 09:48:13,697 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:48:13,697 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:48:13,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:48:13,697 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:48:13,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:13,698 INFO L85 PathProgramCache]: Analyzing trace with hash 179566605, now seen corresponding path program 1 times [2021-10-28 09:48:13,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:13,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836225809] [2021-10-28 09:48:13,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:13,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:13,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:13,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:48:13,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836225809] [2021-10-28 09:48:13,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836225809] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:48:13,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:48:13,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:48:13,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623912215] [2021-10-28 09:48:13,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:48:13,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:48:13,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:48:13,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:48:13,841 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-28 09:48:13,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:48:13,944 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2021-10-28 09:48:13,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:48:13,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2021-10-28 09:48:13,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:48:13,946 INFO L225 Difference]: With dead ends: 39 [2021-10-28 09:48:13,946 INFO L226 Difference]: Without dead ends: 37 [2021-10-28 09:48:13,947 INFO L786 BasicCegarLoop]: 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 [2021-10-28 09:48:13,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-28 09:48:13,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-28 09:48:13,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.25) internal successors, (40), 36 states have internal predecessors, (40), 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) [2021-10-28 09:48:13,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2021-10-28 09:48:13,952 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 8 [2021-10-28 09:48:13,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:48:13,953 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2021-10-28 09:48:13,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-28 09:48:13,953 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2021-10-28 09:48:13,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:48:13,954 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:48:13,954 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:48:13,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:48:13,954 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:48:13,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:13,955 INFO L85 PathProgramCache]: Analyzing trace with hash 711412120, now seen corresponding path program 1 times [2021-10-28 09:48:13,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:13,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416246069] [2021-10-28 09:48:13,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:13,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:14,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:14,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:48:14,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416246069] [2021-10-28 09:48:14,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416246069] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:48:14,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:48:14,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:48:14,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284655497] [2021-10-28 09:48:14,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:48:14,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:48:14,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:48:14,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:48:14,058 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-10-28 09:48:14,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:48:14,246 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2021-10-28 09:48:14,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:48:14,247 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2021-10-28 09:48:14,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:48:14,248 INFO L225 Difference]: With dead ends: 62 [2021-10-28 09:48:14,248 INFO L226 Difference]: Without dead ends: 60 [2021-10-28 09:48:14,249 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:48:14,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-28 09:48:14,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 44. [2021-10-28 09:48:14,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 43 states have internal predecessors, (48), 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) [2021-10-28 09:48:14,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-10-28 09:48:14,256 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 10 [2021-10-28 09:48:14,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:48:14,257 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-10-28 09:48:14,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-10-28 09:48:14,257 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-10-28 09:48:14,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:48:14,258 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:48:14,258 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:48:14,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:48:14,259 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:48:14,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:14,259 INFO L85 PathProgramCache]: Analyzing trace with hash -2056579816, now seen corresponding path program 1 times [2021-10-28 09:48:14,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:14,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531421280] [2021-10-28 09:48:14,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:14,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:14,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:14,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:48:14,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531421280] [2021-10-28 09:48:14,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531421280] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:48:14,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:48:14,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:48:14,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295216531] [2021-10-28 09:48:14,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:48:14,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:48:14,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:48:14,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:48:14,383 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-28 09:48:14,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:48:14,523 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2021-10-28 09:48:14,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:48:14,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-10-28 09:48:14,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:48:14,525 INFO L225 Difference]: With dead ends: 44 [2021-10-28 09:48:14,527 INFO L226 Difference]: Without dead ends: 42 [2021-10-28 09:48:14,527 INFO L786 BasicCegarLoop]: 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 [2021-10-28 09:48:14,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-28 09:48:14,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-28 09:48:14,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 38 states have (on average 1.2105263157894737) 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) [2021-10-28 09:48:14,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-10-28 09:48:14,533 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 11 [2021-10-28 09:48:14,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:48:14,533 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-10-28 09:48:14,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-28 09:48:14,533 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-10-28 09:48:14,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 09:48:14,534 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:48:14,534 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:48:14,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:48:14,535 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:48:14,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:14,536 INFO L85 PathProgramCache]: Analyzing trace with hash -688119236, now seen corresponding path program 1 times [2021-10-28 09:48:14,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:14,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397355561] [2021-10-28 09:48:14,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:14,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:14,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:48:14,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397355561] [2021-10-28 09:48:14,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397355561] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:48:14,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:48:14,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:48:14,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022970430] [2021-10-28 09:48:14,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:48:14,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:48:14,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:48:14,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:48:14,638 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-10-28 09:48:14,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:48:14,709 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2021-10-28 09:48:14,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:48:14,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2021-10-28 09:48:14,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:48:14,714 INFO L225 Difference]: With dead ends: 42 [2021-10-28 09:48:14,714 INFO L226 Difference]: Without dead ends: 40 [2021-10-28 09:48:14,715 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:48:14,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-28 09:48:14,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-10-28 09:48:14,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 39 states have internal predecessors, (44), 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) [2021-10-28 09:48:14,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2021-10-28 09:48:14,730 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 13 [2021-10-28 09:48:14,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:48:14,731 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2021-10-28 09:48:14,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-10-28 09:48:14,731 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2021-10-28 09:48:14,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 09:48:14,732 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:48:14,732 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:48:14,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:48:14,733 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:48:14,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:14,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1285114177, now seen corresponding path program 1 times [2021-10-28 09:48:14,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:14,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115983479] [2021-10-28 09:48:14,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:14,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:14,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:14,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:48:14,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115983479] [2021-10-28 09:48:14,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115983479] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:48:14,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:48:14,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:48:14,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467364261] [2021-10-28 09:48:14,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:48:14,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:48:14,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:48:14,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:48:14,914 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-10-28 09:48:15,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:48:15,046 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2021-10-28 09:48:15,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:48:15,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2021-10-28 09:48:15,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:48:15,047 INFO L225 Difference]: With dead ends: 55 [2021-10-28 09:48:15,047 INFO L226 Difference]: Without dead ends: 43 [2021-10-28 09:48:15,048 INFO L786 BasicCegarLoop]: 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 [2021-10-28 09:48:15,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-28 09:48:15,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2021-10-28 09:48:15,058 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) [2021-10-28 09:48:15,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-10-28 09:48:15,059 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 14 [2021-10-28 09:48:15,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:48:15,059 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-10-28 09:48:15,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-10-28 09:48:15,060 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-10-28 09:48:15,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:48:15,060 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:48:15,061 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:48:15,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:48:15,061 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:48:15,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:15,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1621160418, now seen corresponding path program 1 times [2021-10-28 09:48:15,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:15,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297672011] [2021-10-28 09:48:15,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:15,063 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:15,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:15,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:48:15,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297672011] [2021-10-28 09:48:15,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297672011] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:48:15,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565014809] [2021-10-28 09:48:15,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:15,127 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:48:15,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:15,129 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:48:15,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:48:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:15,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 09:48:15,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:15,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:48:15,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:48:15,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:48:15,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2021-10-28 09:48:15,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:48:15,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:48:15,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:48:15,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2021-10-28 09:48:15,696 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:48:15,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 31 [2021-10-28 09:48:15,708 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:48:15,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2021-10-28 09:48:15,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:15,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565014809] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:48:15,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:48:15,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-10-28 09:48:15,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972253302] [2021-10-28 09:48:15,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:48:15,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:48:15,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:48:15,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:48:15,736 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2021-10-28 09:48:15,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:48:15,964 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2021-10-28 09:48:15,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:48:15,965 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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 17 [2021-10-28 09:48:15,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:48:15,966 INFO L225 Difference]: With dead ends: 59 [2021-10-28 09:48:15,966 INFO L226 Difference]: Without dead ends: 37 [2021-10-28 09:48:15,966 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:48:15,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-28 09:48:15,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-28 09:48:15,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 36 states have internal predecessors, (40), 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) [2021-10-28 09:48:15,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2021-10-28 09:48:15,970 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 17 [2021-10-28 09:48:15,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:48:15,971 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2021-10-28 09:48:15,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2021-10-28 09:48:15,971 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2021-10-28 09:48:15,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 09:48:15,972 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:48:15,972 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:48:16,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:16,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:48:16,181 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:48:16,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:16,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1036168340, now seen corresponding path program 1 times [2021-10-28 09:48:16,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:16,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107271607] [2021-10-28 09:48:16,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:16,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:16,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:16,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:48:16,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107271607] [2021-10-28 09:48:16,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107271607] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:48:16,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305537643] [2021-10-28 09:48:16,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:16,430 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:48:16,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:16,433 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:48:16,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:48:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:16,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-28 09:48:16,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:16,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 09:48:16,590 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 09:48:16,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2021-10-28 09:48:16,803 INFO L354 Elim1Store]: treesize reduction 193, result has 12.7 percent of original size [2021-10-28 09:48:16,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 74 [2021-10-28 09:48:16,828 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-10-28 09:48:16,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 68 [2021-10-28 09:48:16,957 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-10-28 09:48:16,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:48:16,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 09:48:16,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317208785] [2021-10-28 09:48:16,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:48:16,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:48:16,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:48:16,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:48:16,960 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2021-10-28 09:48:16,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:48:16,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-28 09:48:17,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:48:17,189 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@159ec74c at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:356) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:204) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.checkInternal(ProtectiveHoareTripleChecker.java:61) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkInternal(EfficientHoareTripleChecker.java:63) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:869) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:783) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) 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) [2021-10-28 09:48:17,192 INFO L168 Benchmark]: Toolchain (without parser) took 5466.86 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 68.7 MB in the beginning and 55.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 37.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:48:17,192 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 92.3 MB. Free memory is still 67.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:48:17,193 INFO L168 Benchmark]: CACSL2BoogieTranslator took 538.13 ms. Allocated memory is still 92.3 MB. Free memory was 68.5 MB in the beginning and 59.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:48:17,193 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.19 ms. Allocated memory is still 92.3 MB. Free memory was 59.2 MB in the beginning and 57.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:48:17,193 INFO L168 Benchmark]: Boogie Preprocessor took 58.30 ms. Allocated memory is still 92.3 MB. Free memory was 57.1 MB in the beginning and 55.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:48:17,194 INFO L168 Benchmark]: RCFGBuilder took 504.57 ms. Allocated memory is still 92.3 MB. Free memory was 54.9 MB in the beginning and 36.1 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:48:17,194 INFO L168 Benchmark]: TraceAbstraction took 4299.36 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 35.7 MB in the beginning and 55.7 MB in the end (delta: -20.0 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:48:17,197 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 92.3 MB. Free memory is still 67.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 538.13 ms. Allocated memory is still 92.3 MB. Free memory was 68.5 MB in the beginning and 59.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.19 ms. Allocated memory is still 92.3 MB. Free memory was 59.2 MB in the beginning and 57.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.30 ms. Allocated memory is still 92.3 MB. Free memory was 57.1 MB in the beginning and 55.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 504.57 ms. Allocated memory is still 92.3 MB. Free memory was 54.9 MB in the beginning and 36.1 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4299.36 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 35.7 MB in the beginning and 55.7 MB in the end (delta: -20.0 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@159ec74c de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@159ec74c: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-28 09:48:17,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:48:19,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:48:19,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:48:19,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:48:19,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:48:19,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:48:19,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:48:19,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:48:19,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:48:19,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:48:19,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:48:19,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:48:19,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:48:19,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:48:19,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:48:19,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:48:19,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:48:19,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:48:19,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:48:19,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:48:19,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:48:19,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:48:19,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:48:19,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:48:19,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:48:19,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:48:19,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:48:19,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:48:19,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:48:19,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:48:19,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:48:19,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:48:19,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:48:19,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:48:19,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:48:19,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:48:19,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:48:19,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:48:19,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:48:19,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:48:19,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:48:19,778 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 09:48:19,828 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:48:19,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:48:19,830 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:48:19,830 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:48:19,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:48:19,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:48:19,833 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:48:19,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:48:19,833 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:48:19,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:48:19,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:48:19,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:48:19,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:48:19,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:48:19,836 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:48:19,836 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:48:19,836 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:48:19,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:48:19,837 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:48:19,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:48:19,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:48:19,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:48:19,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:48:19,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:48:19,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:48:19,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:48:19,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:48:19,839 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:48:19,839 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:48:19,839 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:48:19,839 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:48:19,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:48:19,840 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:48:19,840 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:48:19,840 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503e46fe74670dc8b1fd2e8b2c5a408fc01c83cb421ff9aefb8796417315d291 [2021-10-28 09:48:20,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:48:20,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:48:20,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:48:20,262 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:48:20,263 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:48:20,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2021-10-28 09:48:20,348 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/data/64ca01c09/ce8b368e984b41cfb943d00e87adf22c/FLAG22721c26f [2021-10-28 09:48:21,027 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:48:21,029 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2021-10-28 09:48:21,048 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/data/64ca01c09/ce8b368e984b41cfb943d00e87adf22c/FLAG22721c26f [2021-10-28 09:48:21,276 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/data/64ca01c09/ce8b368e984b41cfb943d00e87adf22c [2021-10-28 09:48:21,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:48:21,281 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:48:21,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:48:21,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:48:21,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:48:21,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:48:21" (1/1) ... [2021-10-28 09:48:21,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@731ce834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:21, skipping insertion in model container [2021-10-28 09:48:21,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:48:21" (1/1) ... [2021-10-28 09:48:21,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:48:21,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:48:21,724 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22665,22678] [2021-10-28 09:48:21,731 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22735,22748] [2021-10-28 09:48:21,732 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22799,22812] [2021-10-28 09:48:21,734 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22894,22907] [2021-10-28 09:48:21,735 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22966,22979] [2021-10-28 09:48:21,736 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23105,23118] [2021-10-28 09:48:21,737 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23179,23192] [2021-10-28 09:48:21,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:48:21,759 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:48:21,799 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22665,22678] [2021-10-28 09:48:21,800 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22735,22748] [2021-10-28 09:48:21,801 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22799,22812] [2021-10-28 09:48:21,802 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22894,22907] [2021-10-28 09:48:21,803 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22966,22979] [2021-10-28 09:48:21,805 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23105,23118] [2021-10-28 09:48:21,806 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23179,23192] [2021-10-28 09:48:21,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:48:21,856 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:48:21,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:21 WrapperNode [2021-10-28 09:48:21,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:48:21,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:48:21,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:48:21,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:48:21,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:21" (1/1) ... [2021-10-28 09:48:21,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:21" (1/1) ... [2021-10-28 09:48:21,932 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:48:21,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:48:21,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:48:21,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:48:21,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:21" (1/1) ... [2021-10-28 09:48:21,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:21" (1/1) ... [2021-10-28 09:48:21,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:21" (1/1) ... [2021-10-28 09:48:21,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:21" (1/1) ... [2021-10-28 09:48:21,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:21" (1/1) ... [2021-10-28 09:48:21,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:21" (1/1) ... [2021-10-28 09:48:21,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:21" (1/1) ... [2021-10-28 09:48:21,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:48:21,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:48:21,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:48:21,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:48:21,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:21" (1/1) ... [2021-10-28 09:48:21,994 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:48:22,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:22,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:22,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:48:22,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 09:48:22,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:48:22,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:48:22,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:48:22,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:48:22,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:48:22,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 09:48:22,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 09:48:22,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:48:22,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:48:23,694 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:48:23,694 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-10-28 09:48:23,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:48:23 BoogieIcfgContainer [2021-10-28 09:48:23,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:48:23,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:48:23,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:48:23,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:48:23,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:48:21" (1/3) ... [2021-10-28 09:48:23,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545120b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:48:23, skipping insertion in model container [2021-10-28 09:48:23,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:21" (2/3) ... [2021-10-28 09:48:23,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545120b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:48:23, skipping insertion in model container [2021-10-28 09:48:23,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:48:23" (3/3) ... [2021-10-28 09:48:23,705 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2021-10-28 09:48:23,711 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:48:23,711 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-28 09:48:23,754 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:48:23,760 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 [2021-10-28 09:48:23,761 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-28 09:48:23,776 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 38 states have (on average 1.9736842105263157) internal successors, (75), 45 states have internal predecessors, (75), 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) [2021-10-28 09:48:23,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 09:48:23,781 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:48:23,782 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:48:23,783 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:48:23,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:23,789 INFO L85 PathProgramCache]: Analyzing trace with hash 891569350, now seen corresponding path program 1 times [2021-10-28 09:48:23,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:48:23,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957337973] [2021-10-28 09:48:23,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:23,803 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:48:23,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:48:23,807 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:48:23,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:48:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:23,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 09:48:23,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:23,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:23,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:48:24,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:24,019 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:48:24,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957337973] [2021-10-28 09:48:24,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957337973] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:48:24,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:48:24,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 09:48:24,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665406082] [2021-10-28 09:48:24,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:48:24,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:48:24,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:48:24,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:48:24,048 INFO L87 Difference]: Start difference. First operand has 46 states, 38 states have (on average 1.9736842105263157) internal successors, (75), 45 states have internal predecessors, (75), 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) [2021-10-28 09:48:24,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:48:24,073 INFO L93 Difference]: Finished difference Result 90 states and 148 transitions. [2021-10-28 09:48:24,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:48:24,074 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 [2021-10-28 09:48:24,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:48:24,083 INFO L225 Difference]: With dead ends: 90 [2021-10-28 09:48:24,083 INFO L226 Difference]: Without dead ends: 40 [2021-10-28 09:48:24,091 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:48:24,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-28 09:48:24,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-10-28 09:48:24,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.303030303030303) internal successors, (43), 39 states have internal predecessors, (43), 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) [2021-10-28 09:48:24,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-10-28 09:48:24,130 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 6 [2021-10-28 09:48:24,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:48:24,131 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-10-28 09:48:24,131 INFO L471 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) [2021-10-28 09:48:24,131 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-10-28 09:48:24,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 09:48:24,132 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:48:24,132 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:48:24,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:24,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:48:24,345 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:48:24,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:24,349 INFO L85 PathProgramCache]: Analyzing trace with hash 889692517, now seen corresponding path program 1 times [2021-10-28 09:48:24,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:48:24,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368432237] [2021-10-28 09:48:24,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:24,354 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:48:24,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:48:24,355 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:48:24,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 09:48:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:24,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:48:24,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:24,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-10-28 09:48:24,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:24,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:48:24,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:24,629 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:48:24,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [368432237] [2021-10-28 09:48:24,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [368432237] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:48:24,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:48:24,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 09:48:24,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065969549] [2021-10-28 09:48:24,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:48:24,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:48:24,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:48:24,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:48:24,641 INFO L87 Difference]: Start difference. First operand 40 states and 43 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) [2021-10-28 09:48:25,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:48:25,489 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2021-10-28 09:48:25,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:48:25,490 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 [2021-10-28 09:48:25,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:48:25,491 INFO L225 Difference]: With dead ends: 45 [2021-10-28 09:48:25,491 INFO L226 Difference]: Without dead ends: 43 [2021-10-28 09:48:25,492 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:48:25,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-28 09:48:25,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2021-10-28 09:48:25,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 32 states have (on average 1.28125) internal successors, (41), 37 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) [2021-10-28 09:48:25,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-10-28 09:48:25,498 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 6 [2021-10-28 09:48:25,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:48:25,499 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-10-28 09:48:25,499 INFO L471 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) [2021-10-28 09:48:25,500 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-10-28 09:48:25,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 09:48:25,500 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:48:25,500 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:48:25,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:25,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:48:25,713 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:48:25,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:25,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723981, now seen corresponding path program 1 times [2021-10-28 09:48:25,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:48:25,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [999354710] [2021-10-28 09:48:25,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:25,715 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:48:25,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:48:25,716 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:48:25,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 09:48:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:25,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:48:25,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:25,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 09:48:25,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-28 09:48:25,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:25,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:48:25,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:25,933 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:48:25,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [999354710] [2021-10-28 09:48:25,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [999354710] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:48:25,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:48:25,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 09:48:25,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115461108] [2021-10-28 09:48:25,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:48:25,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:48:25,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:48:25,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:48:25,936 INFO L87 Difference]: Start difference. First operand 38 states and 41 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) [2021-10-28 09:48:26,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:48:26,260 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-10-28 09:48:26,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:48:26,261 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 [2021-10-28 09:48:26,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:48:26,262 INFO L225 Difference]: With dead ends: 38 [2021-10-28 09:48:26,262 INFO L226 Difference]: Without dead ends: 36 [2021-10-28 09:48:26,263 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:48:26,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-28 09:48:26,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-28 09:48:26,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 35 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) [2021-10-28 09:48:26,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2021-10-28 09:48:26,268 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 7 [2021-10-28 09:48:26,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:48:26,268 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2021-10-28 09:48:26,268 INFO L471 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) [2021-10-28 09:48:26,269 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2021-10-28 09:48:26,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:48:26,269 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:48:26,269 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:48:26,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:26,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:48:26,470 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:48:26,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:26,471 INFO L85 PathProgramCache]: Analyzing trace with hash 590587384, now seen corresponding path program 1 times [2021-10-28 09:48:26,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:48:26,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218637048] [2021-10-28 09:48:26,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:26,472 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:48:26,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:48:26,472 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:48:26,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 09:48:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:26,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:48:26,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:26,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 09:48:26,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-28 09:48:26,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:26,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:48:26,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:26,812 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:48:26,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [218637048] [2021-10-28 09:48:26,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [218637048] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:48:26,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:48:26,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-28 09:48:26,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147453704] [2021-10-28 09:48:26,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:48:26,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:48:26,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:48:26,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:48:26,814 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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) [2021-10-28 09:48:28,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:48:28,672 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2021-10-28 09:48:28,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:48:28,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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 9 [2021-10-28 09:48:28,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:48:28,674 INFO L225 Difference]: With dead ends: 75 [2021-10-28 09:48:28,679 INFO L226 Difference]: Without dead ends: 73 [2021-10-28 09:48:28,680 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:48:28,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-28 09:48:28,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 52. [2021-10-28 09:48:28,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 51 states have internal predecessors, (60), 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) [2021-10-28 09:48:28,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2021-10-28 09:48:28,688 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 9 [2021-10-28 09:48:28,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:48:28,690 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2021-10-28 09:48:28,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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) [2021-10-28 09:48:28,690 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2021-10-28 09:48:28,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:48:28,692 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:48:28,692 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:48:28,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-28 09:48:28,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:48:28,905 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:48:28,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:28,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1507179337, now seen corresponding path program 1 times [2021-10-28 09:48:28,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:48:28,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431688830] [2021-10-28 09:48:28,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:28,907 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:48:28,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:48:28,908 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:48:28,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 09:48:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:29,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:48:29,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:30,579 INFO L354 Elim1Store]: treesize reduction 163, result has 25.6 percent of original size [2021-10-28 09:48:30,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 141 treesize of output 126 [2021-10-28 09:48:31,407 INFO L354 Elim1Store]: treesize reduction 163, result has 25.6 percent of original size [2021-10-28 09:48:31,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 111 [2021-10-28 09:48:34,994 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:48:34,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 135 treesize of output 142 [2021-10-28 09:48:35,055 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:48:35,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 142 treesize of output 141 [2021-10-28 09:48:35,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:35,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:48:36,048 INFO L354 Elim1Store]: treesize reduction 235, result has 0.4 percent of original size [2021-10-28 09:48:36,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 158 treesize of output 1 [2021-10-28 09:48:36,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:36,057 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:48:36,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431688830] [2021-10-28 09:48:36,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431688830] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:48:36,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:48:36,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-10-28 09:48:36,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262644634] [2021-10-28 09:48:36,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:48:36,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:48:36,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:48:36,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:48:36,059 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2021-10-28 09:48:42,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:48:42,348 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2021-10-28 09:48:42,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:48:42,350 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 10 [2021-10-28 09:48:42,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:48:42,350 INFO L225 Difference]: With dead ends: 64 [2021-10-28 09:48:42,351 INFO L226 Difference]: Without dead ends: 62 [2021-10-28 09:48:42,351 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:48:42,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-28 09:48:42,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 50. [2021-10-28 09:48:42,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 49 states have internal predecessors, (57), 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) [2021-10-28 09:48:42,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2021-10-28 09:48:42,358 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 10 [2021-10-28 09:48:42,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:48:42,359 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2021-10-28 09:48:42,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2021-10-28 09:48:42,359 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2021-10-28 09:48:42,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:48:42,360 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:48:42,360 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:48:42,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-28 09:48:42,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:48:42,577 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:48:42,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:42,578 INFO L85 PathProgramCache]: Analyzing trace with hash -995236357, now seen corresponding path program 1 times [2021-10-28 09:48:42,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:48:42,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234895281] [2021-10-28 09:48:42,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:42,578 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:48:42,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:48:42,579 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:48:42,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 09:48:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:42,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:48:42,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:42,824 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-28 09:48:42,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2021-10-28 09:48:42,929 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-10-28 09:48:42,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 61 treesize of output 78 [2021-10-28 09:48:43,126 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-10-28 09:48:43,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 88 treesize of output 92 [2021-10-28 09:48:43,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:43,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:48:47,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:47,346 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:48:47,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234895281] [2021-10-28 09:48:47,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234895281] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:48:47,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:48:47,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-28 09:48:47,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552563753] [2021-10-28 09:48:47,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:48:47,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:48:47,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:48:47,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-10-28 09:48:47,349 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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) [2021-10-28 09:48:49,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:48:49,210 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2021-10-28 09:48:49,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:48:49,211 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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 [2021-10-28 09:48:49,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:48:49,212 INFO L225 Difference]: With dead ends: 51 [2021-10-28 09:48:49,212 INFO L226 Difference]: Without dead ends: 49 [2021-10-28 09:48:49,213 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-10-28 09:48:49,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-28 09:48:49,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2021-10-28 09:48:49,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 45 states have (on average 1.2) internal successors, (54), 47 states have internal predecessors, (54), 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) [2021-10-28 09:48:49,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2021-10-28 09:48:49,222 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 12 [2021-10-28 09:48:49,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:48:49,222 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2021-10-28 09:48:49,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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) [2021-10-28 09:48:49,223 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2021-10-28 09:48:49,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 09:48:49,223 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:48:49,224 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:48:49,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:49,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:48:49,441 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:48:49,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:49,442 INFO L85 PathProgramCache]: Analyzing trace with hash 2079156959, now seen corresponding path program 1 times [2021-10-28 09:48:49,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:48:49,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552645609] [2021-10-28 09:48:49,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:49,442 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:48:49,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:48:49,443 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:48:49,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 09:48:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:49,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:48:49,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:49,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 09:48:49,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-28 09:48:49,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:49,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:48:49,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:49,790 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:48:49,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552645609] [2021-10-28 09:48:49,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552645609] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:48:49,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:48:49,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-28 09:48:49,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348739453] [2021-10-28 09:48:49,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:48:49,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:48:49,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:48:49,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:48:49,793 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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) [2021-10-28 09:48:51,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:48:51,939 INFO L93 Difference]: Finished difference Result 77 states and 86 transitions. [2021-10-28 09:48:51,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:48:51,940 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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 13 [2021-10-28 09:48:51,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:48:51,941 INFO L225 Difference]: With dead ends: 77 [2021-10-28 09:48:51,941 INFO L226 Difference]: Without dead ends: 65 [2021-10-28 09:48:51,945 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:48:51,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-10-28 09:48:51,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 51. [2021-10-28 09:48:51,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 48 states have (on average 1.1875) internal successors, (57), 50 states have internal predecessors, (57), 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) [2021-10-28 09:48:51,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2021-10-28 09:48:51,951 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 13 [2021-10-28 09:48:51,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:48:51,952 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2021-10-28 09:48:51,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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) [2021-10-28 09:48:51,952 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2021-10-28 09:48:51,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 09:48:51,958 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:48:51,958 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:48:51,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-28 09:48:52,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:48:52,171 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:48:52,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:52,171 INFO L85 PathProgramCache]: Analyzing trace with hash -734247455, now seen corresponding path program 1 times [2021-10-28 09:48:52,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:48:52,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474771703] [2021-10-28 09:48:52,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:52,172 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:48:52,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:48:52,173 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:48:52,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 09:48:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:52,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:48:52,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:52,387 INFO L354 Elim1Store]: treesize reduction 82, result has 17.2 percent of original size [2021-10-28 09:48:52,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 17 [2021-10-28 09:48:52,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:48:52,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:48:52,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:48:52,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2021-10-28 09:48:52,767 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-28 09:48:52,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 33 [2021-10-28 09:48:52,773 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-28 09:48:52,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 13 [2021-10-28 09:48:52,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:52,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:48:53,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:53,007 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:48:53,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474771703] [2021-10-28 09:48:53,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474771703] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 09:48:53,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:48:53,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-28 09:48:53,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079663338] [2021-10-28 09:48:53,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:48:53,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:48:53,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:48:53,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:48:53,008 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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) [2021-10-28 09:48:55,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:48:55,336 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2021-10-28 09:48:55,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:48:55,337 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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 16 [2021-10-28 09:48:55,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:48:55,338 INFO L225 Difference]: With dead ends: 73 [2021-10-28 09:48:55,338 INFO L226 Difference]: Without dead ends: 51 [2021-10-28 09:48:55,338 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:48:55,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-28 09:48:55,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-28 09:48:55,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 50 states have internal predecessors, (56), 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) [2021-10-28 09:48:55,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2021-10-28 09:48:55,344 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 16 [2021-10-28 09:48:55,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:48:55,345 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2021-10-28 09:48:55,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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) [2021-10-28 09:48:55,345 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2021-10-28 09:48:55,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 09:48:55,346 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:48:55,346 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:48:55,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:55,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:48:55,559 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:48:55,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:55,559 INFO L85 PathProgramCache]: Analyzing trace with hash -587248931, now seen corresponding path program 1 times [2021-10-28 09:48:55,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:48:55,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754085996] [2021-10-28 09:48:55,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:55,560 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:48:55,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:48:55,562 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:48:55,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-28 09:48:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:55,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-28 09:48:55,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:55,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 09:48:55,892 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-28 09:48:55,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-28 09:48:55,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:48:55,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:48:55,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:48:55,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 55 [2021-10-28 09:48:56,012 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-10-28 09:48:56,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 33 [2021-10-28 09:48:56,039 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-28 09:48:56,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 37 [2021-10-28 09:48:56,147 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:48:56,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754085996] [2021-10-28 09:48:56,148 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-10-28 09:48:56,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1233144811] [2021-10-28 09:48:56,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:56,149 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-28 09:48:56,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/cvc4 [2021-10-28 09:48:56,154 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-28 09:48:56,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-28 09:48:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:56,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-28 09:48:56,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@595ddc9a [2021-10-28 09:48:56,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049365014] [2021-10-28 09:48:56,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:56,467 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:48:56,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:56,469 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:48:56,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-28 09:48:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:56,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 09:48:56,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@595ddc9a [2021-10-28 09:48:56,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:48:56,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-28 09:48:56,654 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-28 09:48:56,654 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-10-28 09:48:56,659 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:48:56,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:48:56,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:48:56,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:48:56,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:48:56,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:48:56,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:48:56,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-10-28 09:48:56,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:57,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-10-28 09:48:57,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:48:57,266 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:48:57,268 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:48:57,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:48:57 BoogieIcfgContainer [2021-10-28 09:48:57,283 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:48:57,283 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:48:57,284 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:48:57,284 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:48:57,284 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:48:23" (3/4) ... [2021-10-28 09:48:57,287 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:48:57,291 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:48:57,292 INFO L168 Benchmark]: Toolchain (without parser) took 36011.07 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 44.4 MB in the beginning and 43.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:48:57,292 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 65.0 MB. Free memory is still 47.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:48:57,293 INFO L168 Benchmark]: CACSL2BoogieTranslator took 574.95 ms. Allocated memory is still 65.0 MB. Free memory was 44.2 MB in the beginning and 40.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:48:57,293 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.24 ms. Allocated memory is still 65.0 MB. Free memory was 40.7 MB in the beginning and 38.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:48:57,294 INFO L168 Benchmark]: Boogie Preprocessor took 50.21 ms. Allocated memory is still 65.0 MB. Free memory was 38.5 MB in the beginning and 36.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:48:57,294 INFO L168 Benchmark]: RCFGBuilder took 1712.90 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 36.4 MB in the beginning and 48.3 MB in the end (delta: -11.9 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:48:57,294 INFO L168 Benchmark]: TraceAbstraction took 33584.60 ms. Allocated memory is still 79.7 MB. Free memory was 48.0 MB in the beginning and 44.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:48:57,295 INFO L168 Benchmark]: Witness Printer took 7.77 ms. Allocated memory is still 79.7 MB. Free memory is still 43.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:48:57,297 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 65.0 MB. Free memory is still 47.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 574.95 ms. Allocated memory is still 65.0 MB. Free memory was 44.2 MB in the beginning and 40.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.24 ms. Allocated memory is still 65.0 MB. Free memory was 40.7 MB in the beginning and 38.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.21 ms. Allocated memory is still 65.0 MB. Free memory was 38.5 MB in the beginning and 36.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1712.90 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 36.4 MB in the beginning and 48.3 MB in the end (delta: -11.9 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 33584.60 ms. Allocated memory is still 79.7 MB. Free memory was 48.0 MB in the beginning and 44.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Witness Printer took 7.77 ms. Allocated memory is still 79.7 MB. Free memory is still 43.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * 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 - UnprovableResult [Line: 1042]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L998] struct TSLL* null = malloc(sizeof(struct TSLL)); [L999] null->next = ((void*)0) [L1000] null->prev = ((void*)0) [L1001] null->colour = BLACK [L1003] struct TSLL* list = malloc(sizeof(struct TSLL)); [L1004] list->next = null [L1005] list->prev = null [L1006] list->colour = BLACK [L1008] struct TSLL* end = list; [L1011] COND TRUE __VERIFIER_nondet_int() [L1014] end->next = malloc(sizeof(struct TSLL)) [L1015] EXPR end->next [L1015] end->next->prev = end [L1016] EXPR end->next [L1016] end = end->next [L1017] end->next = null [L1019] COND FALSE !(__VERIFIER_nondet_int()) [L1025] end->colour = RED [L1026] end->next = malloc(sizeof(struct TSLL)) [L1027] EXPR end->next [L1027] end->next->prev = end [L1028] EXPR end->next [L1028] end = end->next [L1029] end->next = null [L1030] end->colour = BLACK [L1032] EXPR end->colour [L1032] COND FALSE !(!(BLACK == end->colour)) [L1033] EXPR end->next [L1033] COND FALSE !(!(null == end->next)) [L1034] COND FALSE !(!(null != end)) [L1011] COND FALSE !(__VERIFIER_nondet_int()) [L1037] end = null [L1038] end = list [L1041] COND FALSE !(!(null != end)) [L1042] EXPR end->colour [L1042] COND TRUE !(BLACK == end->colour) [L1042] reach_error() - 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: 1033]: 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: 1034]: 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: 1041]: 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: 1048]: 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: 1049]: 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, 46 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 33.5s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 15.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 246 SDtfs, 272 SDslu, 446 SDs, 0 SdLazy, 391 SolverSat, 60 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 14.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=4, InterpolantAutomatonStates: 42, 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, 8 MinimizatonAttempts, 53 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 13.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 142 ConstructedInterpolants, 6 QuantifiedInterpolants, 1659 SizeOfPredicates, 30 NumberOfNonLiveVariables, 563 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 16 InterpolantComputations, 14 PerfectInterpolantSequences, 2/4 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 could not prove your program: unable to determine feasibility of some traces [2021-10-28 09:48:57,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfdf8f04-4bc5-401c-bb79-762f96220515/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...