./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec3_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec3_product31.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash beb678f648eb46083c76f273f6eef79e0abada1343858eba26829a720997a379 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 17:47:39,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 17:47:39,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 17:47:39,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 17:47:39,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 17:47:39,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 17:47:39,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 17:47:39,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 17:47:39,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 17:47:39,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 17:47:39,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 17:47:39,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 17:47:39,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 17:47:39,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 17:47:39,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 17:47:39,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 17:47:39,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 17:47:39,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 17:47:39,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 17:47:39,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 17:47:39,095 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 17:47:39,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 17:47:39,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 17:47:39,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 17:47:39,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 17:47:39,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 17:47:39,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 17:47:39,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 17:47:39,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 17:47:39,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 17:47:39,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 17:47:39,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 17:47:39,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 17:47:39,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 17:47:39,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 17:47:39,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 17:47:39,111 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 17:47:39,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 17:47:39,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 17:47:39,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 17:47:39,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 17:47:39,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 17:47:39,115 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 17:47:39,147 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 17:47:39,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 17:47:39,148 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 17:47:39,148 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 17:47:39,149 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 17:47:39,149 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 17:47:39,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 17:47:39,150 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 17:47:39,150 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 17:47:39,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 17:47:39,151 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 17:47:39,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 17:47:39,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 17:47:39,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 17:47:39,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 17:47:39,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 17:47:39,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 17:47:39,153 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 17:47:39,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 17:47:39,153 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 17:47:39,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 17:47:39,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 17:47:39,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 17:47:39,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 17:47:39,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:47:39,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 17:47:39,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 17:47:39,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 17:47:39,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 17:47:39,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 17:47:39,155 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 17:47:39,156 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 17:47:39,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 17:47:39,156 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> beb678f648eb46083c76f273f6eef79e0abada1343858eba26829a720997a379 [2022-07-13 17:47:39,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 17:47:39,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 17:47:39,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 17:47:39,431 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 17:47:39,431 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 17:47:39,432 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec3_product31.cil.c [2022-07-13 17:47:39,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1f46f123/9469ade21f824a969b38eef0a91ccd8b/FLAG4e1f3783b [2022-07-13 17:47:40,061 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 17:47:40,068 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec3_product31.cil.c [2022-07-13 17:47:40,087 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1f46f123/9469ade21f824a969b38eef0a91ccd8b/FLAG4e1f3783b [2022-07-13 17:47:40,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1f46f123/9469ade21f824a969b38eef0a91ccd8b [2022-07-13 17:47:40,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 17:47:40,332 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 17:47:40,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 17:47:40,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 17:47:40,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 17:47:40,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:47:40" (1/1) ... [2022-07-13 17:47:40,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23dd0228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:47:40, skipping insertion in model container [2022-07-13 17:47:40,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:47:40" (1/1) ... [2022-07-13 17:47:40,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 17:47:40,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 17:47:40,841 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec3_product31.cil.c[42138,42151] [2022-07-13 17:47:40,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:47:40,965 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 17:47:41,038 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec3_product31.cil.c[42138,42151] [2022-07-13 17:47:41,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:47:41,101 INFO L208 MainTranslator]: Completed translation [2022-07-13 17:47:41,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:47:41 WrapperNode [2022-07-13 17:47:41,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 17:47:41,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 17:47:41,104 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 17:47:41,104 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 17:47:41,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:47:41" (1/1) ... [2022-07-13 17:47:41,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:47:41" (1/1) ... [2022-07-13 17:47:41,221 INFO L137 Inliner]: procedures = 132, calls = 227, calls flagged for inlining = 61, calls inlined = 56, statements flattened = 1050 [2022-07-13 17:47:41,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 17:47:41,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 17:47:41,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 17:47:41,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 17:47:41,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:47:41" (1/1) ... [2022-07-13 17:47:41,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:47:41" (1/1) ... [2022-07-13 17:47:41,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:47:41" (1/1) ... [2022-07-13 17:47:41,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:47:41" (1/1) ... [2022-07-13 17:47:41,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:47:41" (1/1) ... [2022-07-13 17:47:41,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:47:41" (1/1) ... [2022-07-13 17:47:41,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:47:41" (1/1) ... [2022-07-13 17:47:41,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 17:47:41,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 17:47:41,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 17:47:41,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 17:47:41,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:47:41" (1/1) ... [2022-07-13 17:47:41,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:47:41,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:47:41,316 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 17:47:41,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 17:47:41,348 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-07-13 17:47:41,348 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-07-13 17:47:41,348 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-07-13 17:47:41,348 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-07-13 17:47:41,348 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-07-13 17:47:41,349 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-07-13 17:47:41,349 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-13 17:47:41,349 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-13 17:47:41,349 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-13 17:47:41,349 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-13 17:47:41,349 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-07-13 17:47:41,349 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-07-13 17:47:41,350 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-13 17:47:41,350 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-13 17:47:41,350 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-07-13 17:47:41,350 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-07-13 17:47:41,350 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-07-13 17:47:41,350 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-07-13 17:47:41,351 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-13 17:47:41,351 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-13 17:47:41,351 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-13 17:47:41,351 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-07-13 17:47:41,351 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-07-13 17:47:41,351 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-13 17:47:41,351 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-13 17:47:41,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 17:47:41,352 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-07-13 17:47:41,352 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-07-13 17:47:41,352 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-07-13 17:47:41,352 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-07-13 17:47:41,352 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-13 17:47:41,352 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-13 17:47:41,353 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-13 17:47:41,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-13 17:47:41,353 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-13 17:47:41,353 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-13 17:47:41,353 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-13 17:47:41,353 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-13 17:47:41,354 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-07-13 17:47:41,354 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-07-13 17:47:41,354 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-13 17:47:41,354 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-13 17:47:41,354 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-07-13 17:47:41,354 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-07-13 17:47:41,354 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-13 17:47:41,355 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-13 17:47:41,355 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-07-13 17:47:41,355 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-07-13 17:47:41,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 17:47:41,355 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-13 17:47:41,355 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-13 17:47:41,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 17:47:41,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 17:47:41,692 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 17:47:41,694 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 17:47:42,394 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 17:47:42,406 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 17:47:42,407 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 17:47:42,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:47:42 BoogieIcfgContainer [2022-07-13 17:47:42,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 17:47:42,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 17:47:42,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 17:47:42,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 17:47:42,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 05:47:40" (1/3) ... [2022-07-13 17:47:42,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66328fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:47:42, skipping insertion in model container [2022-07-13 17:47:42,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:47:41" (2/3) ... [2022-07-13 17:47:42,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66328fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:47:42, skipping insertion in model container [2022-07-13 17:47:42,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:47:42" (3/3) ... [2022-07-13 17:47:42,418 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product31.cil.c [2022-07-13 17:47:42,432 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 17:47:42,432 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 17:47:42,505 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 17:47:42,514 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@102030c8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@23f1b27e [2022-07-13 17:47:42,514 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 17:47:42,528 INFO L276 IsEmpty]: Start isEmpty. Operand has 380 states, 290 states have (on average 1.4965517241379311) internal successors, (434), 296 states have internal predecessors, (434), 64 states have call successors, (64), 24 states have call predecessors, (64), 24 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-07-13 17:47:42,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-13 17:47:42,589 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:47:42,590 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:47:42,591 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:47:42,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:47:42,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1387818797, now seen corresponding path program 1 times [2022-07-13 17:47:42,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:47:42,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754327740] [2022-07-13 17:47:42,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:47:42,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:47:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:42,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:47:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:42,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:47:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:42,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:47:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:43,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:47:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:43,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:47:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:43,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:47:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:43,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 17:47:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:43,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 17:47:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:43,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:47:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:43,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 17:47:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:43,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 17:47:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:43,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 17:47:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:43,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 17:47:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:43,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 17:47:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:43,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 17:47:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:43,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 17:47:43,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:43,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 17:47:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:43,116 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-13 17:47:43,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:47:43,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754327740] [2022-07-13 17:47:43,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754327740] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:47:43,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976271322] [2022-07-13 17:47:43,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:47:43,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:47:43,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:47:43,127 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:47:43,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 17:47:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:43,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 17:47:43,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:47:43,500 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-13 17:47:43,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:47:43,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976271322] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:47:43,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:47:43,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-07-13 17:47:43,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945285802] [2022-07-13 17:47:43,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:47:43,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 17:47:43,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:47:43,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 17:47:43,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:47:43,544 INFO L87 Difference]: Start difference. First operand has 380 states, 290 states have (on average 1.4965517241379311) internal successors, (434), 296 states have internal predecessors, (434), 64 states have call successors, (64), 24 states have call predecessors, (64), 24 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:47:43,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:47:43,611 INFO L93 Difference]: Finished difference Result 605 states and 878 transitions. [2022-07-13 17:47:43,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 17:47:43,613 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 130 [2022-07-13 17:47:43,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:47:43,627 INFO L225 Difference]: With dead ends: 605 [2022-07-13 17:47:43,627 INFO L226 Difference]: Without dead ends: 372 [2022-07-13 17:47:43,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:47:43,637 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:47:43,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:47:43,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-07-13 17:47:43,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2022-07-13 17:47:43,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 284 states have (on average 1.4894366197183098) internal successors, (423), 288 states have internal predecessors, (423), 64 states have call successors, (64), 24 states have call predecessors, (64), 23 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-07-13 17:47:43,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 548 transitions. [2022-07-13 17:47:43,740 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 548 transitions. Word has length 130 [2022-07-13 17:47:43,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:47:43,742 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 548 transitions. [2022-07-13 17:47:43,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:47:43,743 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 548 transitions. [2022-07-13 17:47:43,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-13 17:47:43,747 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:47:43,747 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:47:43,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 17:47:43,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-13 17:47:43,955 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:47:43,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:47:43,956 INFO L85 PathProgramCache]: Analyzing trace with hash 440913668, now seen corresponding path program 1 times [2022-07-13 17:47:43,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:47:43,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414153929] [2022-07-13 17:47:43,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:47:43,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:47:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:47:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:47:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:47:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:47:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:47:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:47:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 17:47:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 17:47:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 17:47:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:47:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 17:47:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 17:47:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 17:47:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 17:47:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 17:47:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 17:47:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-13 17:47:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,209 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-13 17:47:44,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:47:44,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414153929] [2022-07-13 17:47:44,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414153929] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:47:44,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141127058] [2022-07-13 17:47:44,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:47:44,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:47:44,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:47:44,212 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:47:44,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 17:47:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 1199 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 17:47:44,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:47:44,560 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-13 17:47:44,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:47:44,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141127058] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:47:44,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:47:44,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-13 17:47:44,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158205983] [2022-07-13 17:47:44,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:47:44,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 17:47:44,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:47:44,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 17:47:44,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:47:44,563 INFO L87 Difference]: Start difference. First operand 372 states and 548 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:47:44,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:47:44,597 INFO L93 Difference]: Finished difference Result 594 states and 855 transitions. [2022-07-13 17:47:44,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 17:47:44,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 131 [2022-07-13 17:47:44,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:47:44,601 INFO L225 Difference]: With dead ends: 594 [2022-07-13 17:47:44,602 INFO L226 Difference]: Without dead ends: 375 [2022-07-13 17:47:44,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:47:44,605 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 1 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:47:44,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1090 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:47:44,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-07-13 17:47:44,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 374. [2022-07-13 17:47:44,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 286 states have (on average 1.486013986013986) internal successors, (425), 290 states have internal predecessors, (425), 64 states have call successors, (64), 24 states have call predecessors, (64), 23 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-07-13 17:47:44,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 550 transitions. [2022-07-13 17:47:44,625 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 550 transitions. Word has length 131 [2022-07-13 17:47:44,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:47:44,626 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 550 transitions. [2022-07-13 17:47:44,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:47:44,626 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 550 transitions. [2022-07-13 17:47:44,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-13 17:47:44,628 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:47:44,628 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:47:44,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 17:47:44,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-13 17:47:44,848 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:47:44,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:47:44,848 INFO L85 PathProgramCache]: Analyzing trace with hash 2067163547, now seen corresponding path program 1 times [2022-07-13 17:47:44,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:47:44,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156016311] [2022-07-13 17:47:44,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:47:44,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:47:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:47:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:47:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:47:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:47:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:47:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:47:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 17:47:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 17:47:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:47:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 17:47:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 17:47:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 17:47:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:44,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 17:47:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:45,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 17:47:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:45,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 17:47:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:45,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-13 17:47:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:45,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-13 17:47:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:45,018 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-13 17:47:45,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:47:45,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156016311] [2022-07-13 17:47:45,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156016311] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:47:45,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792430379] [2022-07-13 17:47:45,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:47:45,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:47:45,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:47:45,022 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:47:45,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 17:47:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:45,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 1213 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:47:45,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:47:45,336 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-13 17:47:45,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:47:45,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792430379] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:47:45,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:47:45,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-13 17:47:45,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487542718] [2022-07-13 17:47:45,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:47:45,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 17:47:45,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:47:45,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 17:47:45,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:47:45,339 INFO L87 Difference]: Start difference. First operand 374 states and 550 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:47:45,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:47:45,367 INFO L93 Difference]: Finished difference Result 778 states and 1159 transitions. [2022-07-13 17:47:45,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 17:47:45,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 137 [2022-07-13 17:47:45,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:47:45,372 INFO L225 Difference]: With dead ends: 778 [2022-07-13 17:47:45,372 INFO L226 Difference]: Without dead ends: 431 [2022-07-13 17:47:45,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:47:45,376 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 107 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:47:45,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 1073 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:47:45,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-07-13 17:47:45,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 423. [2022-07-13 17:47:45,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 324 states have (on average 1.5030864197530864) internal successors, (487), 328 states have internal predecessors, (487), 75 states have call successors, (75), 24 states have call predecessors, (75), 23 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-07-13 17:47:45,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 634 transitions. [2022-07-13 17:47:45,398 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 634 transitions. Word has length 137 [2022-07-13 17:47:45,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:47:45,398 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 634 transitions. [2022-07-13 17:47:45,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:47:45,399 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 634 transitions. [2022-07-13 17:47:45,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-13 17:47:45,406 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:47:45,406 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:47:45,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-13 17:47:45,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:47:45,626 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:47:45,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:47:45,627 INFO L85 PathProgramCache]: Analyzing trace with hash -607209044, now seen corresponding path program 1 times [2022-07-13 17:47:45,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:47:45,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682366684] [2022-07-13 17:47:45,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:47:45,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:47:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:45,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:47:45,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:45,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:47:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:45,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:47:45,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:45,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:47:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:45,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:47:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:45,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:47:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:45,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 17:47:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:45,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 17:47:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:45,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 17:47:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:45,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:47:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:45,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 17:47:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:45,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 17:47:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:45,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 17:47:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:45,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 17:47:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:45,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 17:47:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:45,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 17:47:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:45,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 17:47:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:45,808 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-13 17:47:45,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:47:45,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682366684] [2022-07-13 17:47:45,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682366684] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:47:45,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404517552] [2022-07-13 17:47:45,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:47:45,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:47:45,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:47:45,810 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:47:45,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 17:47:46,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:46,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 17:47:46,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:47:46,167 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 17:47:46,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:47:46,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404517552] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:47:46,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:47:46,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-07-13 17:47:46,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865127551] [2022-07-13 17:47:46,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:47:46,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 17:47:46,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:47:46,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 17:47:46,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:47:46,171 INFO L87 Difference]: Start difference. First operand 423 states and 634 transitions. Second operand has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-13 17:47:46,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:47:46,258 INFO L93 Difference]: Finished difference Result 837 states and 1258 transitions. [2022-07-13 17:47:46,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:47:46,258 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 138 [2022-07-13 17:47:46,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:47:46,265 INFO L225 Difference]: With dead ends: 837 [2022-07-13 17:47:46,265 INFO L226 Difference]: Without dead ends: 425 [2022-07-13 17:47:46,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:47:46,270 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 125 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:47:46,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 2011 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:47:46,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-07-13 17:47:46,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2022-07-13 17:47:46,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 325 states have (on average 1.5015384615384615) internal successors, (488), 330 states have internal predecessors, (488), 75 states have call successors, (75), 24 states have call predecessors, (75), 24 states have return successors, (74), 72 states have call predecessors, (74), 72 states have call successors, (74) [2022-07-13 17:47:46,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 637 transitions. [2022-07-13 17:47:46,309 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 637 transitions. Word has length 138 [2022-07-13 17:47:46,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:47:46,311 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 637 transitions. [2022-07-13 17:47:46,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-13 17:47:46,311 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 637 transitions. [2022-07-13 17:47:46,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-13 17:47:46,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:47:46,315 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:47:46,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 17:47:46,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:47:46,536 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:47:46,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:47:46,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1078053634, now seen corresponding path program 1 times [2022-07-13 17:47:46,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:47:46,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714159534] [2022-07-13 17:47:46,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:47:46,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:47:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:46,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:47:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:46,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:47:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:46,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:47:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:46,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:47:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:46,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 17:47:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:46,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:47:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:46,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 17:47:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:46,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:47:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:46,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:47:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:46,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 17:47:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:46,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 17:47:46,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:46,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 17:47:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:46,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 17:47:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:46,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-13 17:47:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:46,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 17:47:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:46,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 17:47:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:46,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 17:47:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:46,709 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-13 17:47:46,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:47:46,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714159534] [2022-07-13 17:47:46,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714159534] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:47:46,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747952080] [2022-07-13 17:47:46,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:47:46,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:47:46,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:47:46,712 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:47:46,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 17:47:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:46,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 17:47:46,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:47:47,040 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 17:47:47,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:47:47,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747952080] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:47:47,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:47:47,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-13 17:47:47,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437085192] [2022-07-13 17:47:47,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:47:47,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 17:47:47,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:47:47,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 17:47:47,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:47:47,045 INFO L87 Difference]: Start difference. First operand 425 states and 637 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-13 17:47:47,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:47:47,106 INFO L93 Difference]: Finished difference Result 839 states and 1263 transitions. [2022-07-13 17:47:47,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:47:47,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 139 [2022-07-13 17:47:47,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:47:47,109 INFO L225 Difference]: With dead ends: 839 [2022-07-13 17:47:47,110 INFO L226 Difference]: Without dead ends: 427 [2022-07-13 17:47:47,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-13 17:47:47,112 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 124 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:47:47,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2000 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:47:47,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-07-13 17:47:47,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2022-07-13 17:47:47,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 326 states have (on average 1.5) internal successors, (489), 332 states have internal predecessors, (489), 75 states have call successors, (75), 24 states have call predecessors, (75), 25 states have return successors, (79), 72 states have call predecessors, (79), 72 states have call successors, (79) [2022-07-13 17:47:47,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 643 transitions. [2022-07-13 17:47:47,151 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 643 transitions. Word has length 139 [2022-07-13 17:47:47,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:47:47,151 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 643 transitions. [2022-07-13 17:47:47,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-13 17:47:47,152 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 643 transitions. [2022-07-13 17:47:47,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-13 17:47:47,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:47:47,154 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:47:47,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 17:47:47,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:47:47,372 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:47:47,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:47:47,373 INFO L85 PathProgramCache]: Analyzing trace with hash -2074934836, now seen corresponding path program 1 times [2022-07-13 17:47:47,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:47:47,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893686903] [2022-07-13 17:47:47,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:47:47,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:47:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:47,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:47:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:47,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:47:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:47,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:47:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:47,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:47:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:47,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:47:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:47,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-13 17:47:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:47,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:47:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:47,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 17:47:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:47,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 17:47:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:47,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 17:47:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:47,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 17:47:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:47,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 17:47:47,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:47,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 17:47:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:47,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 17:47:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:47,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 17:47:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:47,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-13 17:47:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:47,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-13 17:47:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:47,500 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-13 17:47:47,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:47:47,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893686903] [2022-07-13 17:47:47,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893686903] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:47:47,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:47:47,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:47:47,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606634119] [2022-07-13 17:47:47,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:47:47,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:47:47,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:47:47,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:47:47,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:47:47,503 INFO L87 Difference]: Start difference. First operand 427 states and 643 transitions. Second operand has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-13 17:47:49,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:47:49,713 INFO L93 Difference]: Finished difference Result 1024 states and 1542 transitions. [2022-07-13 17:47:49,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 17:47:49,713 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 140 [2022-07-13 17:47:49,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:47:49,718 INFO L225 Difference]: With dead ends: 1024 [2022-07-13 17:47:49,718 INFO L226 Difference]: Without dead ends: 620 [2022-07-13 17:47:49,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 17:47:49,721 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 1362 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2352 mSolverCounterSat, 582 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 2934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 582 IncrementalHoareTripleChecker+Valid, 2352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-13 17:47:49,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1380 Valid, 1472 Invalid, 2934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [582 Valid, 2352 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-13 17:47:49,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2022-07-13 17:47:49,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 427. [2022-07-13 17:47:49,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 326 states have (on average 1.5) internal successors, (489), 332 states have internal predecessors, (489), 75 states have call successors, (75), 24 states have call predecessors, (75), 25 states have return successors, (78), 72 states have call predecessors, (78), 72 states have call successors, (78) [2022-07-13 17:47:49,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 642 transitions. [2022-07-13 17:47:49,757 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 642 transitions. Word has length 140 [2022-07-13 17:47:49,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:47:49,758 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 642 transitions. [2022-07-13 17:47:49,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-13 17:47:49,758 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 642 transitions. [2022-07-13 17:47:49,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-13 17:47:49,775 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:47:49,775 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:47:49,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 17:47:49,776 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:47:49,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:47:49,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1534046852, now seen corresponding path program 2 times [2022-07-13 17:47:49,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:47:49,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873905213] [2022-07-13 17:47:49,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:47:49,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:47:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:49,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:47:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:49,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:47:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:49,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:47:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:49,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:47:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:49,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:47:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:49,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 17:47:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:49,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 17:47:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:49,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 17:47:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:49,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 17:47:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:49,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-13 17:47:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:49,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 17:47:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:49,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 17:47:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:49,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 17:47:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:49,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 17:47:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:49,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-13 17:47:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:49,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 17:47:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:49,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 17:47:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:49,928 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-13 17:47:49,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:47:49,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873905213] [2022-07-13 17:47:49,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873905213] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:47:49,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:47:49,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:47:49,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302546609] [2022-07-13 17:47:49,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:47:49,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:47:49,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:47:49,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:47:49,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:47:49,930 INFO L87 Difference]: Start difference. First operand 427 states and 642 transitions. Second operand has 9 states, 8 states have (on average 10.375) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-13 17:47:51,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:47:51,996 INFO L93 Difference]: Finished difference Result 1026 states and 1545 transitions. [2022-07-13 17:47:51,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 17:47:51,997 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 141 [2022-07-13 17:47:51,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:47:52,001 INFO L225 Difference]: With dead ends: 1026 [2022-07-13 17:47:52,001 INFO L226 Difference]: Without dead ends: 622 [2022-07-13 17:47:52,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 17:47:52,004 INFO L413 NwaCegarLoop]: 679 mSDtfsCounter, 1325 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2434 mSolverCounterSat, 578 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 3012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 578 IncrementalHoareTripleChecker+Valid, 2434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 17:47:52,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1342 Valid, 1493 Invalid, 3012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [578 Valid, 2434 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-13 17:47:52,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2022-07-13 17:47:52,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 429. [2022-07-13 17:47:52,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 327 states have (on average 1.4984709480122325) internal successors, (490), 334 states have internal predecessors, (490), 75 states have call successors, (75), 24 states have call predecessors, (75), 26 states have return successors, (80), 72 states have call predecessors, (80), 72 states have call successors, (80) [2022-07-13 17:47:52,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 645 transitions. [2022-07-13 17:47:52,037 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 645 transitions. Word has length 141 [2022-07-13 17:47:52,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:47:52,038 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 645 transitions. [2022-07-13 17:47:52,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-13 17:47:52,038 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 645 transitions. [2022-07-13 17:47:52,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-13 17:47:52,040 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:47:52,041 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:47:52,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 17:47:52,041 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:47:52,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:47:52,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1962358169, now seen corresponding path program 1 times [2022-07-13 17:47:52,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:47:52,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228094386] [2022-07-13 17:47:52,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:47:52,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:47:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:52,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:47:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:52,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:47:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:52,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:47:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:52,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:47:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:52,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:47:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:52,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:47:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:52,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 17:47:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:52,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 17:47:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:52,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:47:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:52,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 17:47:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:52,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 17:47:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:52,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 17:47:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:52,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 17:47:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:52,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 17:47:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:52,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 17:47:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:52,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-13 17:47:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:52,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 17:47:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:52,213 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-13 17:47:52,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:47:52,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228094386] [2022-07-13 17:47:52,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228094386] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:47:52,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:47:52,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 17:47:52,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296160478] [2022-07-13 17:47:52,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:47:52,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 17:47:52,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:47:52,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 17:47:52,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:47:52,216 INFO L87 Difference]: Start difference. First operand 429 states and 645 transitions. Second operand has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-13 17:47:54,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:47:54,905 INFO L93 Difference]: Finished difference Result 1024 states and 1540 transitions. [2022-07-13 17:47:54,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 17:47:54,906 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 142 [2022-07-13 17:47:54,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:47:54,922 INFO L225 Difference]: With dead ends: 1024 [2022-07-13 17:47:54,923 INFO L226 Difference]: Without dead ends: 622 [2022-07-13 17:47:54,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-13 17:47:54,925 INFO L413 NwaCegarLoop]: 639 mSDtfsCounter, 1473 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 4216 mSolverCounterSat, 634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 4850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 4216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 17:47:54,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 1763 Invalid, 4850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 4216 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 17:47:54,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2022-07-13 17:47:54,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 429. [2022-07-13 17:47:54,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 327 states have (on average 1.4984709480122325) internal successors, (490), 334 states have internal predecessors, (490), 75 states have call successors, (75), 24 states have call predecessors, (75), 26 states have return successors, (79), 72 states have call predecessors, (79), 72 states have call successors, (79) [2022-07-13 17:47:54,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 644 transitions. [2022-07-13 17:47:54,957 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 644 transitions. Word has length 142 [2022-07-13 17:47:54,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:47:54,958 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 644 transitions. [2022-07-13 17:47:54,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-13 17:47:54,958 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 644 transitions. [2022-07-13 17:47:54,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-13 17:47:54,960 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:47:54,961 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:47:54,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 17:47:54,961 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:47:54,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:47:54,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1250543763, now seen corresponding path program 2 times [2022-07-13 17:47:54,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:47:54,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618399410] [2022-07-13 17:47:54,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:47:54,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:47:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:55,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:47:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:55,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:47:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:55,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:47:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:55,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:47:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:55,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:47:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:55,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:47:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:55,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 17:47:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:55,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:47:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:55,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:47:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:55,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 17:47:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:55,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 17:47:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:55,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 17:47:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:55,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 17:47:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:55,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 17:47:55,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:55,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 17:47:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:55,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-13 17:47:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:55,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-13 17:47:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:55,122 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-13 17:47:55,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:47:55,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618399410] [2022-07-13 17:47:55,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618399410] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:47:55,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:47:55,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 17:47:55,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207336841] [2022-07-13 17:47:55,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:47:55,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 17:47:55,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:47:55,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 17:47:55,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:47:55,125 INFO L87 Difference]: Start difference. First operand 429 states and 644 transitions. Second operand has 12 states, 11 states have (on average 8.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-13 17:47:57,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:47:57,664 INFO L93 Difference]: Finished difference Result 1026 states and 1546 transitions. [2022-07-13 17:47:57,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 17:47:57,665 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 143 [2022-07-13 17:47:57,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:47:57,668 INFO L225 Difference]: With dead ends: 1026 [2022-07-13 17:47:57,668 INFO L226 Difference]: Without dead ends: 624 [2022-07-13 17:47:57,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-13 17:47:57,672 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 1440 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 4363 mSolverCounterSat, 612 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 4975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 612 IncrementalHoareTripleChecker+Valid, 4363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 17:47:57,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1440 Valid, 1778 Invalid, 4975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [612 Valid, 4363 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 17:47:57,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-07-13 17:47:57,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 431. [2022-07-13 17:47:57,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 328 states have (on average 1.4969512195121952) internal successors, (491), 336 states have internal predecessors, (491), 75 states have call successors, (75), 24 states have call predecessors, (75), 27 states have return successors, (84), 72 states have call predecessors, (84), 72 states have call successors, (84) [2022-07-13 17:47:57,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 650 transitions. [2022-07-13 17:47:57,708 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 650 transitions. Word has length 143 [2022-07-13 17:47:57,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:47:57,709 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 650 transitions. [2022-07-13 17:47:57,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-13 17:47:57,709 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 650 transitions. [2022-07-13 17:47:57,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-13 17:47:57,712 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:47:57,712 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:47:57,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 17:47:57,712 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:47:57,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:47:57,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1937124610, now seen corresponding path program 1 times [2022-07-13 17:47:57,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:47:57,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011103277] [2022-07-13 17:47:57,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:47:57,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:47:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:57,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:47:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:57,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:47:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:57,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:47:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:57,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:47:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:57,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:47:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:57,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:47:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:57,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:47:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:57,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 17:47:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:57,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 17:47:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:57,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 17:47:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:57,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 17:47:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:57,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 17:47:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:57,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 17:47:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:57,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 17:47:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:57,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 17:47:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:57,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 17:47:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:57,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-13 17:47:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:57,834 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-13 17:47:57,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:47:57,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011103277] [2022-07-13 17:47:57,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011103277] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:47:57,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371514453] [2022-07-13 17:47:57,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:47:57,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:47:57,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:47:57,836 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:47:57,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 17:47:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:47:58,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 1226 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:47:58,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:47:58,154 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-13 17:47:58,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 17:47:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-13 17:47:58,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371514453] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 17:47:58,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 17:47:58,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2022-07-13 17:47:58,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971478545] [2022-07-13 17:47:58,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 17:47:58,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 17:47:58,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:47:58,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 17:47:58,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:47:58,238 INFO L87 Difference]: Start difference. First operand 431 states and 650 transitions. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 7 states have internal predecessors, (124), 2 states have call successors, (40), 6 states have call predecessors, (40), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-13 17:48:00,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:00,061 INFO L93 Difference]: Finished difference Result 1195 states and 1874 transitions. [2022-07-13 17:48:00,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 17:48:00,061 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 7 states have internal predecessors, (124), 2 states have call successors, (40), 6 states have call predecessors, (40), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 144 [2022-07-13 17:48:00,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:00,068 INFO L225 Difference]: With dead ends: 1195 [2022-07-13 17:48:00,068 INFO L226 Difference]: Without dead ends: 976 [2022-07-13 17:48:00,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-07-13 17:48:00,071 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 1659 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 2122 mSolverCounterSat, 720 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1704 SdHoareTripleChecker+Valid, 2019 SdHoareTripleChecker+Invalid, 2842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 720 IncrementalHoareTripleChecker+Valid, 2122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 17:48:00,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1704 Valid, 2019 Invalid, 2842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [720 Valid, 2122 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 17:48:00,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2022-07-13 17:48:00,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 759. [2022-07-13 17:48:00,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 592 states have (on average 1.5692567567567568) internal successors, (929), 600 states have internal predecessors, (929), 139 states have call successors, (139), 24 states have call predecessors, (139), 27 states have return successors, (158), 136 states have call predecessors, (158), 136 states have call successors, (158) [2022-07-13 17:48:00,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1226 transitions. [2022-07-13 17:48:00,140 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1226 transitions. Word has length 144 [2022-07-13 17:48:00,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:00,141 INFO L495 AbstractCegarLoop]: Abstraction has 759 states and 1226 transitions. [2022-07-13 17:48:00,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 7 states have internal predecessors, (124), 2 states have call successors, (40), 6 states have call predecessors, (40), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-13 17:48:00,141 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1226 transitions. [2022-07-13 17:48:00,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-13 17:48:00,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:00,145 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:00,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 17:48:00,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:48:00,364 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:00,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:00,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1055063227, now seen corresponding path program 1 times [2022-07-13 17:48:00,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:00,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309959736] [2022-07-13 17:48:00,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:00,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:00,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:00,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:00,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:00,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:00,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:00,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:48:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:00,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 17:48:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:00,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 17:48:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:00,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 17:48:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:00,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 17:48:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:00,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 17:48:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:00,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 17:48:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:00,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 17:48:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:00,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 17:48:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:00,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 17:48:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:00,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-13 17:48:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:00,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-13 17:48:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:00,493 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-13 17:48:00,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:00,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309959736] [2022-07-13 17:48:00,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309959736] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:00,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:48:00,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:48:00,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765288000] [2022-07-13 17:48:00,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:00,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:48:00,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:00,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:48:00,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:48:00,496 INFO L87 Difference]: Start difference. First operand 759 states and 1226 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:48:01,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:01,991 INFO L93 Difference]: Finished difference Result 1976 states and 3245 transitions. [2022-07-13 17:48:01,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:48:01,992 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 150 [2022-07-13 17:48:01,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:02,000 INFO L225 Difference]: With dead ends: 1976 [2022-07-13 17:48:02,000 INFO L226 Difference]: Without dead ends: 1285 [2022-07-13 17:48:02,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:48:02,004 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 1335 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 1840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 622 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:48:02,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1351 Valid, 1352 Invalid, 1840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [622 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 17:48:02,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2022-07-13 17:48:02,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1084. [2022-07-13 17:48:02,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 853 states have (on average 1.5873388042203986) internal successors, (1354), 861 states have internal predecessors, (1354), 203 states have call successors, (203), 24 states have call predecessors, (203), 27 states have return successors, (232), 200 states have call predecessors, (232), 200 states have call successors, (232) [2022-07-13 17:48:02,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1789 transitions. [2022-07-13 17:48:02,087 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1789 transitions. Word has length 150 [2022-07-13 17:48:02,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:02,087 INFO L495 AbstractCegarLoop]: Abstraction has 1084 states and 1789 transitions. [2022-07-13 17:48:02,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:48:02,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1789 transitions. [2022-07-13 17:48:02,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-13 17:48:02,093 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:02,093 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:02,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 17:48:02,094 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:02,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:02,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1879593157, now seen corresponding path program 1 times [2022-07-13 17:48:02,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:02,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140528127] [2022-07-13 17:48:02,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:02,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:48:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:48:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:48:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 17:48:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 17:48:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 17:48:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 17:48:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 17:48:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 17:48:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-13 17:48:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-13 17:48:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 17:48:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,204 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-13 17:48:02,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:02,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140528127] [2022-07-13 17:48:02,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140528127] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:02,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:48:02,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:48:02,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650215103] [2022-07-13 17:48:02,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:02,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:48:02,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:02,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:48:02,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:48:02,207 INFO L87 Difference]: Start difference. First operand 1084 states and 1789 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:48:03,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:03,731 INFO L93 Difference]: Finished difference Result 2756 states and 4594 transitions. [2022-07-13 17:48:03,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:48:03,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 151 [2022-07-13 17:48:03,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:03,743 INFO L225 Difference]: With dead ends: 2756 [2022-07-13 17:48:03,743 INFO L226 Difference]: Without dead ends: 1793 [2022-07-13 17:48:03,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:48:03,748 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 1333 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:48:03,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1348 Valid, 1341 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [617 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 17:48:03,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2022-07-13 17:48:03,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 1592. [2022-07-13 17:48:03,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1266 states have (on average 1.599526066350711) internal successors, (2025), 1274 states have internal predecessors, (2025), 298 states have call successors, (298), 24 states have call predecessors, (298), 27 states have return successors, (327), 295 states have call predecessors, (327), 295 states have call successors, (327) [2022-07-13 17:48:03,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2650 transitions. [2022-07-13 17:48:03,872 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2650 transitions. Word has length 151 [2022-07-13 17:48:03,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:03,873 INFO L495 AbstractCegarLoop]: Abstraction has 1592 states and 2650 transitions. [2022-07-13 17:48:03,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:48:03,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2650 transitions. [2022-07-13 17:48:03,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-13 17:48:03,884 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:03,884 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:03,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 17:48:03,884 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:03,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:03,885 INFO L85 PathProgramCache]: Analyzing trace with hash -956692061, now seen corresponding path program 1 times [2022-07-13 17:48:03,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:03,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223553412] [2022-07-13 17:48:03,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:03,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:48:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 17:48:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:48:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 17:48:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 17:48:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 17:48:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-13 17:48:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 17:48:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-13 17:48:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-13 17:48:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-13 17:48:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 17:48:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,995 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-13 17:48:03,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:03,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223553412] [2022-07-13 17:48:03,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223553412] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:03,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:48:03,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:48:03,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869043909] [2022-07-13 17:48:03,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:03,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:48:03,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:03,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:48:03,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:48:03,998 INFO L87 Difference]: Start difference. First operand 1592 states and 2650 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:48:05,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:05,420 INFO L93 Difference]: Finished difference Result 3908 states and 6603 transitions. [2022-07-13 17:48:05,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:48:05,420 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 152 [2022-07-13 17:48:05,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:05,435 INFO L225 Difference]: With dead ends: 3908 [2022-07-13 17:48:05,435 INFO L226 Difference]: Without dead ends: 2562 [2022-07-13 17:48:05,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:48:05,442 INFO L413 NwaCegarLoop]: 696 mSDtfsCounter, 1328 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 17:48:05,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 1328 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [609 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 17:48:05,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2562 states. [2022-07-13 17:48:05,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2562 to 2361. [2022-07-13 17:48:05,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2361 states, 1912 states have (on average 1.608786610878661) internal successors, (3076), 1920 states have internal predecessors, (3076), 421 states have call successors, (421), 24 states have call predecessors, (421), 27 states have return successors, (466), 418 states have call predecessors, (466), 418 states have call successors, (466) [2022-07-13 17:48:05,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2361 states to 2361 states and 3963 transitions. [2022-07-13 17:48:05,595 INFO L78 Accepts]: Start accepts. Automaton has 2361 states and 3963 transitions. Word has length 152 [2022-07-13 17:48:05,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:05,595 INFO L495 AbstractCegarLoop]: Abstraction has 2361 states and 3963 transitions. [2022-07-13 17:48:05,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:48:05,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2361 states and 3963 transitions. [2022-07-13 17:48:05,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-13 17:48:05,608 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:05,608 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:05,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 17:48:05,608 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:05,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:05,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1635898876, now seen corresponding path program 1 times [2022-07-13 17:48:05,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:05,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402549499] [2022-07-13 17:48:05,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:05,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:48:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:48:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 17:48:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 17:48:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 17:48:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 17:48:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 17:48:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 17:48:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 17:48:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 17:48:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-13 17:48:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 17:48:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,732 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-13 17:48:05,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:05,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402549499] [2022-07-13 17:48:05,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402549499] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:05,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:48:05,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:48:05,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197678169] [2022-07-13 17:48:05,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:05,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:48:05,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:05,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:48:05,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:48:05,735 INFO L87 Difference]: Start difference. First operand 2361 states and 3963 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:48:07,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:07,121 INFO L93 Difference]: Finished difference Result 5702 states and 9737 transitions. [2022-07-13 17:48:07,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:48:07,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 153 [2022-07-13 17:48:07,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:07,141 INFO L225 Difference]: With dead ends: 5702 [2022-07-13 17:48:07,142 INFO L226 Difference]: Without dead ends: 3791 [2022-07-13 17:48:07,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:48:07,149 INFO L413 NwaCegarLoop]: 699 mSDtfsCounter, 1324 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:48:07,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 1331 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 17:48:07,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3791 states. [2022-07-13 17:48:07,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3791 to 3590. [2022-07-13 17:48:07,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3590 states, 2962 states have (on average 1.614787305874409) internal successors, (4783), 2970 states have internal predecessors, (4783), 600 states have call successors, (600), 24 states have call predecessors, (600), 27 states have return successors, (671), 597 states have call predecessors, (671), 597 states have call successors, (671) [2022-07-13 17:48:07,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 6054 transitions. [2022-07-13 17:48:07,445 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 6054 transitions. Word has length 153 [2022-07-13 17:48:07,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:07,446 INFO L495 AbstractCegarLoop]: Abstraction has 3590 states and 6054 transitions. [2022-07-13 17:48:07,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:48:07,446 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 6054 transitions. [2022-07-13 17:48:07,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-13 17:48:07,463 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:07,464 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:07,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 17:48:07,464 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:07,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:07,465 INFO L85 PathProgramCache]: Analyzing trace with hash -392893145, now seen corresponding path program 1 times [2022-07-13 17:48:07,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:07,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194641329] [2022-07-13 17:48:07,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:07,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:48:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 17:48:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 17:48:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 17:48:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 17:48:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 17:48:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 17:48:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-13 17:48:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 17:48:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 17:48:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-13 17:48:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-13 17:48:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,557 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-13 17:48:07,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:07,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194641329] [2022-07-13 17:48:07,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194641329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:07,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:48:07,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:48:07,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025393127] [2022-07-13 17:48:07,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:07,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:48:07,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:07,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:48:07,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:48:07,560 INFO L87 Difference]: Start difference. First operand 3590 states and 6054 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:48:09,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:09,106 INFO L93 Difference]: Finished difference Result 8650 states and 14884 transitions. [2022-07-13 17:48:09,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:48:09,107 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 154 [2022-07-13 17:48:09,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:09,138 INFO L225 Difference]: With dead ends: 8650 [2022-07-13 17:48:09,139 INFO L226 Difference]: Without dead ends: 5822 [2022-07-13 17:48:09,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:48:09,151 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 1344 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 613 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1360 SdHoareTripleChecker+Valid, 1373 SdHoareTripleChecker+Invalid, 1813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 613 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 17:48:09,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1360 Valid, 1373 Invalid, 1813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [613 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 17:48:09,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5822 states. [2022-07-13 17:48:09,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5822 to 5621. [2022-07-13 17:48:09,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5621 states, 4617 states have (on average 1.6103530431015811) internal successors, (7435), 4625 states have internal predecessors, (7435), 976 states have call successors, (976), 24 states have call predecessors, (976), 27 states have return successors, (1091), 973 states have call predecessors, (1091), 973 states have call successors, (1091) [2022-07-13 17:48:09,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5621 states to 5621 states and 9502 transitions. [2022-07-13 17:48:09,550 INFO L78 Accepts]: Start accepts. Automaton has 5621 states and 9502 transitions. Word has length 154 [2022-07-13 17:48:09,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:09,550 INFO L495 AbstractCegarLoop]: Abstraction has 5621 states and 9502 transitions. [2022-07-13 17:48:09,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:48:09,551 INFO L276 IsEmpty]: Start isEmpty. Operand 5621 states and 9502 transitions. [2022-07-13 17:48:09,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-13 17:48:09,578 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:09,578 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:09,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 17:48:09,578 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:09,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:09,579 INFO L85 PathProgramCache]: Analyzing trace with hash -2011874688, now seen corresponding path program 1 times [2022-07-13 17:48:09,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:09,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456463409] [2022-07-13 17:48:09,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:09,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:48:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 17:48:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:48:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 17:48:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 17:48:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 17:48:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 17:48:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 17:48:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-13 17:48:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-13 17:48:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 17:48:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-13 17:48:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,679 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-13 17:48:09,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:09,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456463409] [2022-07-13 17:48:09,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456463409] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:09,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:48:09,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:48:09,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692425540] [2022-07-13 17:48:09,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:09,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:48:09,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:09,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:48:09,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:48:09,682 INFO L87 Difference]: Start difference. First operand 5621 states and 9502 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:48:11,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:11,327 INFO L93 Difference]: Finished difference Result 13987 states and 24105 transitions. [2022-07-13 17:48:11,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:48:11,328 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 155 [2022-07-13 17:48:11,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:11,381 INFO L225 Difference]: With dead ends: 13987 [2022-07-13 17:48:11,382 INFO L226 Difference]: Without dead ends: 9505 [2022-07-13 17:48:11,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:48:11,400 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 1340 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 625 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 17:48:11,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1355 Valid, 1328 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [625 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 17:48:11,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9505 states. [2022-07-13 17:48:11,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9505 to 9304. [2022-07-13 17:48:11,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9304 states, 7694 states have (on average 1.6091759812841175) internal successors, (12381), 7702 states have internal predecessors, (12381), 1582 states have call successors, (1582), 24 states have call predecessors, (1582), 27 states have return successors, (1775), 1579 states have call predecessors, (1775), 1579 states have call successors, (1775) [2022-07-13 17:48:12,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9304 states to 9304 states and 15738 transitions. [2022-07-13 17:48:12,030 INFO L78 Accepts]: Start accepts. Automaton has 9304 states and 15738 transitions. Word has length 155 [2022-07-13 17:48:12,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:12,030 INFO L495 AbstractCegarLoop]: Abstraction has 9304 states and 15738 transitions. [2022-07-13 17:48:12,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:48:12,030 INFO L276 IsEmpty]: Start isEmpty. Operand 9304 states and 15738 transitions. [2022-07-13 17:48:12,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-13 17:48:12,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:12,071 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:12,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 17:48:12,071 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:12,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:12,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1628764231, now seen corresponding path program 1 times [2022-07-13 17:48:12,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:12,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408092325] [2022-07-13 17:48:12,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:12,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:48:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:48:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 17:48:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 17:48:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 17:48:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 17:48:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 17:48:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 17:48:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 17:48:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 17:48:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-13 17:48:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-13 17:48:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,167 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-13 17:48:12,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:12,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408092325] [2022-07-13 17:48:12,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408092325] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:12,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:48:12,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:48:12,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168600304] [2022-07-13 17:48:12,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:12,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:48:12,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:12,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:48:12,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:48:12,170 INFO L87 Difference]: Start difference. First operand 9304 states and 15738 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:48:13,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:13,900 INFO L93 Difference]: Finished difference Result 24171 states and 41651 transitions. [2022-07-13 17:48:13,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:48:13,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 156 [2022-07-13 17:48:13,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:13,970 INFO L225 Difference]: With dead ends: 24171 [2022-07-13 17:48:13,970 INFO L226 Difference]: Without dead ends: 16458 [2022-07-13 17:48:14,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:48:14,044 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 1325 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 1854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 17:48:14,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1340 Valid, 1376 Invalid, 1854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 17:48:14,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16458 states. [2022-07-13 17:48:14,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16458 to 16257. [2022-07-13 17:48:14,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16257 states, 13444 states have (on average 1.6009372210651591) internal successors, (21523), 13452 states have internal predecessors, (21523), 2785 states have call successors, (2785), 24 states have call predecessors, (2785), 27 states have return successors, (3122), 2782 states have call predecessors, (3122), 2782 states have call successors, (3122) [2022-07-13 17:48:15,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16257 states to 16257 states and 27430 transitions. [2022-07-13 17:48:15,038 INFO L78 Accepts]: Start accepts. Automaton has 16257 states and 27430 transitions. Word has length 156 [2022-07-13 17:48:15,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:15,039 INFO L495 AbstractCegarLoop]: Abstraction has 16257 states and 27430 transitions. [2022-07-13 17:48:15,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:48:15,039 INFO L276 IsEmpty]: Start isEmpty. Operand 16257 states and 27430 transitions. [2022-07-13 17:48:15,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-13 17:48:15,088 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:15,088 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:15,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 17:48:15,088 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:15,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:15,089 INFO L85 PathProgramCache]: Analyzing trace with hash 483276447, now seen corresponding path program 1 times [2022-07-13 17:48:15,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:15,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37146234] [2022-07-13 17:48:15,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:15,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:48:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:48:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 17:48:15,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 17:48:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 17:48:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 17:48:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 17:48:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 17:48:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-13 17:48:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 17:48:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 17:48:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-13 17:48:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,211 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-13 17:48:15,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:15,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37146234] [2022-07-13 17:48:15,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37146234] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:15,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:48:15,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:48:15,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889603936] [2022-07-13 17:48:15,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:15,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:48:15,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:15,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:48:15,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:48:15,215 INFO L87 Difference]: Start difference. First operand 16257 states and 27430 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:48:17,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:17,420 INFO L93 Difference]: Finished difference Result 43137 states and 74250 transitions. [2022-07-13 17:48:17,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:48:17,420 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 157 [2022-07-13 17:48:17,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:17,560 INFO L225 Difference]: With dead ends: 43137 [2022-07-13 17:48:17,560 INFO L226 Difference]: Without dead ends: 29113 [2022-07-13 17:48:17,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:48:17,608 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 1327 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 638 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 638 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 17:48:17,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1343 Valid, 1323 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [638 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 17:48:17,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29113 states. [2022-07-13 17:48:19,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29113 to 28912. [2022-07-13 17:48:19,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28912 states, 24060 states have (on average 1.5971321695760599) internal successors, (38427), 24068 states have internal predecessors, (38427), 4824 states have call successors, (4824), 24 states have call predecessors, (4824), 27 states have return successors, (5435), 4821 states have call predecessors, (5435), 4821 states have call successors, (5435) [2022-07-13 17:48:19,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28912 states to 28912 states and 48686 transitions. [2022-07-13 17:48:19,179 INFO L78 Accepts]: Start accepts. Automaton has 28912 states and 48686 transitions. Word has length 157 [2022-07-13 17:48:19,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:19,179 INFO L495 AbstractCegarLoop]: Abstraction has 28912 states and 48686 transitions. [2022-07-13 17:48:19,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:48:19,180 INFO L276 IsEmpty]: Start isEmpty. Operand 28912 states and 48686 transitions. [2022-07-13 17:48:19,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-13 17:48:19,252 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:19,252 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:19,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 17:48:19,253 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:19,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:19,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1495521623, now seen corresponding path program 1 times [2022-07-13 17:48:19,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:19,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439117882] [2022-07-13 17:48:19,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:19,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:48:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 17:48:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-13 17:48:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 17:48:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 17:48:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 17:48:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 17:48:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 17:48:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-13 17:48:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-13 17:48:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 17:48:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-13 17:48:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,345 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-13 17:48:19,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:19,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439117882] [2022-07-13 17:48:19,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439117882] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:19,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:48:19,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:48:19,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100632515] [2022-07-13 17:48:19,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:19,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:48:19,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:19,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:48:19,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:48:19,348 INFO L87 Difference]: Start difference. First operand 28912 states and 48686 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:48:22,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:22,497 INFO L93 Difference]: Finished difference Result 78899 states and 135009 transitions. [2022-07-13 17:48:22,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:48:22,498 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 158 [2022-07-13 17:48:22,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:22,746 INFO L225 Difference]: With dead ends: 78899 [2022-07-13 17:48:22,747 INFO L226 Difference]: Without dead ends: 52992 [2022-07-13 17:48:22,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:48:22,818 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 1332 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 1815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 622 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:48:22,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1348 Valid, 1327 Invalid, 1815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [622 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 17:48:22,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52992 states. [2022-07-13 17:48:25,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52992 to 52791. [2022-07-13 17:48:25,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52791 states, 44224 states have (on average 1.5918053545586106) internal successors, (70396), 44232 states have internal predecessors, (70396), 8539 states have call successors, (8539), 24 states have call predecessors, (8539), 27 states have return successors, (9682), 8536 states have call predecessors, (9682), 8536 states have call successors, (9682) [2022-07-13 17:48:25,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52791 states to 52791 states and 88617 transitions. [2022-07-13 17:48:25,807 INFO L78 Accepts]: Start accepts. Automaton has 52791 states and 88617 transitions. Word has length 158 [2022-07-13 17:48:25,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:25,808 INFO L495 AbstractCegarLoop]: Abstraction has 52791 states and 88617 transitions. [2022-07-13 17:48:25,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:48:25,808 INFO L276 IsEmpty]: Start isEmpty. Operand 52791 states and 88617 transitions. [2022-07-13 17:48:25,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-13 17:48:25,903 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:25,903 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:25,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 17:48:25,903 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:25,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:25,904 INFO L85 PathProgramCache]: Analyzing trace with hash 252721983, now seen corresponding path program 1 times [2022-07-13 17:48:25,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:25,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749457692] [2022-07-13 17:48:25,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:25,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:25,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:25,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:25,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:25,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:25,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:25,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:48:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:25,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 17:48:25,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:25,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 17:48:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:25,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 17:48:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:25,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 17:48:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:25,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 17:48:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:25,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 17:48:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:26,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-13 17:48:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:26,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 17:48:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:26,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-13 17:48:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:26,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 17:48:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:26,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-13 17:48:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:26,006 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-13 17:48:26,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:26,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749457692] [2022-07-13 17:48:26,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749457692] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:26,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:48:26,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:48:26,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896486545] [2022-07-13 17:48:26,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:26,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:48:26,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:26,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:48:26,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:48:26,009 INFO L87 Difference]: Start difference. First operand 52791 states and 88617 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:48:30,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:30,347 INFO L93 Difference]: Finished difference Result 98670 states and 169196 transitions. [2022-07-13 17:48:30,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:48:30,348 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 159 [2022-07-13 17:48:30,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:30,981 INFO L225 Difference]: With dead ends: 98670 [2022-07-13 17:48:30,981 INFO L226 Difference]: Without dead ends: 98451 [2022-07-13 17:48:31,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:48:31,022 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 1299 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 613 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 613 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:48:31,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1314 Valid, 1345 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [613 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 17:48:31,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98451 states. [2022-07-13 17:48:35,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98451 to 98250. [2022-07-13 17:48:35,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98250 states, 82884 states have (on average 1.5849379856184547) internal successors, (131366), 82892 states have internal predecessors, (131366), 15338 states have call successors, (15338), 24 states have call predecessors, (15338), 27 states have return successors, (17527), 15335 states have call predecessors, (17527), 15335 states have call successors, (17527) [2022-07-13 17:48:36,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98250 states to 98250 states and 164231 transitions. [2022-07-13 17:48:36,275 INFO L78 Accepts]: Start accepts. Automaton has 98250 states and 164231 transitions. Word has length 159 [2022-07-13 17:48:36,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:36,276 INFO L495 AbstractCegarLoop]: Abstraction has 98250 states and 164231 transitions. [2022-07-13 17:48:36,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:48:36,276 INFO L276 IsEmpty]: Start isEmpty. Operand 98250 states and 164231 transitions. [2022-07-13 17:48:36,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-13 17:48:36,409 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:36,409 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:36,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 17:48:36,409 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:36,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:36,411 INFO L85 PathProgramCache]: Analyzing trace with hash 2129525176, now seen corresponding path program 1 times [2022-07-13 17:48:36,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:36,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836753026] [2022-07-13 17:48:36,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:36,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:36,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:36,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:36,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:36,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:36,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:36,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:48:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:36,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:48:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:36,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 17:48:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:36,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 17:48:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:36,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 17:48:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:36,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 17:48:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:36,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-13 17:48:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:36,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 17:48:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:36,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 17:48:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:36,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-13 17:48:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:36,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-13 17:48:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:36,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-13 17:48:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:36,656 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-13 17:48:36,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:36,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836753026] [2022-07-13 17:48:36,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836753026] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:48:36,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852868059] [2022-07-13 17:48:36,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:36,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:48:36,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:48:36,659 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:48:36,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 17:48:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:36,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 1295 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-13 17:48:36,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:48:37,134 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-13 17:48:37,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 17:48:37,488 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-13 17:48:37,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852868059] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 17:48:37,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 17:48:37,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 9] total 32 [2022-07-13 17:48:37,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299632021] [2022-07-13 17:48:37,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 17:48:37,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-13 17:48:37,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:37,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-13 17:48:37,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=914, Unknown=0, NotChecked=0, Total=992 [2022-07-13 17:48:37,493 INFO L87 Difference]: Start difference. First operand 98250 states and 164231 transitions. Second operand has 32 states, 30 states have (on average 8.333333333333334) internal successors, (250), 24 states have internal predecessors, (250), 9 states have call successors, (51), 12 states have call predecessors, (51), 12 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) [2022-07-13 17:49:32,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:49:32,237 INFO L93 Difference]: Finished difference Result 589704 states and 1034427 transitions. [2022-07-13 17:49:32,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2022-07-13 17:49:32,240 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 8.333333333333334) internal successors, (250), 24 states have internal predecessors, (250), 9 states have call successors, (51), 12 states have call predecessors, (51), 12 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) Word has length 160 [2022-07-13 17:49:32,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:49:36,133 INFO L225 Difference]: With dead ends: 589704 [2022-07-13 17:49:36,133 INFO L226 Difference]: Without dead ends: 589489 [2022-07-13 17:49:36,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12534 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4333, Invalid=31199, Unknown=0, NotChecked=0, Total=35532 [2022-07-13 17:49:36,765 INFO L413 NwaCegarLoop]: 2433 mSDtfsCounter, 8581 mSDsluCounter, 12840 mSDsCounter, 0 mSdLazyCounter, 60956 mSolverCounterSat, 10698 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8607 SdHoareTripleChecker+Valid, 15273 SdHoareTripleChecker+Invalid, 71654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 10698 IncrementalHoareTripleChecker+Valid, 60956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:49:36,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8607 Valid, 15273 Invalid, 71654 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [10698 Valid, 60956 Invalid, 0 Unknown, 0 Unchecked, 27.7s Time] [2022-07-13 17:49:37,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589489 states.