./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec8_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_spec8_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 aa31ba7b6b6c5a20100c4ed7bd6bb53a6560ae9fc8557479e094a44cc1bad058 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 17:33:58,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 17:33:58,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 17:33:58,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 17:33:58,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 17:33:58,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 17:33:58,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 17:33:58,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 17:33:58,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 17:33:58,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 17:33:58,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 17:33:58,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 17:33:58,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 17:33:58,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 17:33:58,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 17:33:58,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 17:33:58,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 17:33:58,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 17:33:58,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 17:33:58,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 17:33:58,617 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 17:33:58,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 17:33:58,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 17:33:58,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 17:33:58,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 17:33:58,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 17:33:58,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 17:33:58,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 17:33:58,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 17:33:58,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 17:33:58,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 17:33:58,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 17:33:58,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 17:33:58,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 17:33:58,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 17:33:58,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 17:33:58,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 17:33:58,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 17:33:58,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 17:33:58,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 17:33:58,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 17:33:58,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 17:33:58,639 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 17:33:58,659 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 17:33:58,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 17:33:58,661 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 17:33:58,661 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 17:33:58,662 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 17:33:58,662 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 17:33:58,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 17:33:58,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 17:33:58,663 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 17:33:58,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 17:33:58,664 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 17:33:58,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 17:33:58,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 17:33:58,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 17:33:58,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 17:33:58,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 17:33:58,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 17:33:58,665 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 17:33:58,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 17:33:58,665 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 17:33:58,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 17:33:58,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 17:33:58,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 17:33:58,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 17:33:58,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:33:58,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 17:33:58,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 17:33:58,668 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 17:33:58,668 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 17:33:58,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 17:33:58,669 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 17:33:58,669 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 17:33:58,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 17:33:58,669 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa31ba7b6b6c5a20100c4ed7bd6bb53a6560ae9fc8557479e094a44cc1bad058 [2022-07-22 17:33:58,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 17:33:58,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 17:33:58,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 17:33:58,900 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 17:33:58,900 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 17:33:58,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec8_product31.cil.c [2022-07-22 17:33:58,958 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c973005b/ebbe5932b3b8440b8b08f690cd2df7e2/FLAG3c25187d7 [2022-07-22 17:33:59,467 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 17:33:59,468 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec8_product31.cil.c [2022-07-22 17:33:59,491 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c973005b/ebbe5932b3b8440b8b08f690cd2df7e2/FLAG3c25187d7 [2022-07-22 17:33:59,977 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c973005b/ebbe5932b3b8440b8b08f690cd2df7e2 [2022-07-22 17:33:59,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 17:33:59,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 17:33:59,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 17:33:59,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 17:33:59,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 17:33:59,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:33:59" (1/1) ... [2022-07-22 17:33:59,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16ffaa30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:33:59, skipping insertion in model container [2022-07-22 17:33:59,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:33:59" (1/1) ... [2022-07-22 17:33:59,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 17:34:00,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 17:34:00,440 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_spec8_product31.cil.c[36672,36685] [2022-07-22 17:34:00,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:34:00,623 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 17:34:00,685 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_spec8_product31.cil.c[36672,36685] [2022-07-22 17:34:00,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:34:00,759 INFO L208 MainTranslator]: Completed translation [2022-07-22 17:34:00,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:34:00 WrapperNode [2022-07-22 17:34:00,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 17:34:00,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 17:34:00,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 17:34:00,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 17:34:00,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:34:00" (1/1) ... [2022-07-22 17:34:00,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:34:00" (1/1) ... [2022-07-22 17:34:00,857 INFO L137 Inliner]: procedures = 132, calls = 223, calls flagged for inlining = 62, calls inlined = 57, statements flattened = 1032 [2022-07-22 17:34:00,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 17:34:00,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 17:34:00,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 17:34:00,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 17:34:00,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:34:00" (1/1) ... [2022-07-22 17:34:00,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:34:00" (1/1) ... [2022-07-22 17:34:00,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:34:00" (1/1) ... [2022-07-22 17:34:00,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:34:00" (1/1) ... [2022-07-22 17:34:00,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:34:00" (1/1) ... [2022-07-22 17:34:00,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:34:00" (1/1) ... [2022-07-22 17:34:00,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:34:00" (1/1) ... [2022-07-22 17:34:00,939 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 17:34:00,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 17:34:00,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 17:34:00,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 17:34:00,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:34:00" (1/1) ... [2022-07-22 17:34:00,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:34:00,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:34:00,988 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) [2022-07-22 17:34:01,003 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 [2022-07-22 17:34:01,019 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-07-22 17:34:01,020 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-07-22 17:34:01,020 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-07-22 17:34:01,020 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-07-22 17:34:01,020 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-07-22 17:34:01,020 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-07-22 17:34:01,021 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-22 17:34:01,021 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-22 17:34:01,021 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-22 17:34:01,021 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-22 17:34:01,021 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-07-22 17:34:01,021 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-07-22 17:34:01,022 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-22 17:34:01,022 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-22 17:34:01,022 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-07-22 17:34:01,022 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-07-22 17:34:01,022 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-07-22 17:34:01,022 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-07-22 17:34:01,023 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-22 17:34:01,023 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-22 17:34:01,023 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-22 17:34:01,023 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-07-22 17:34:01,023 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-07-22 17:34:01,023 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-22 17:34:01,024 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-22 17:34:01,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 17:34:01,024 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-07-22 17:34:01,024 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-07-22 17:34:01,024 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-07-22 17:34:01,024 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-07-22 17:34:01,025 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-22 17:34:01,025 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-22 17:34:01,025 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-22 17:34:01,025 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-22 17:34:01,025 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-22 17:34:01,025 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-22 17:34:01,026 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-07-22 17:34:01,026 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-07-22 17:34:01,026 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-22 17:34:01,026 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-22 17:34:01,026 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-07-22 17:34:01,026 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-07-22 17:34:01,027 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-22 17:34:01,027 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-22 17:34:01,027 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-07-22 17:34:01,027 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-07-22 17:34:01,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 17:34:01,027 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-22 17:34:01,028 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-22 17:34:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 17:34:01,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 17:34:01,283 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 17:34:01,285 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 17:34:01,925 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 17:34:01,939 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 17:34:01,940 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 17:34:01,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:34:01 BoogieIcfgContainer [2022-07-22 17:34:01,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 17:34:01,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 17:34:01,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 17:34:01,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 17:34:01,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 05:33:59" (1/3) ... [2022-07-22 17:34:01,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca23585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:34:01, skipping insertion in model container [2022-07-22 17:34:01,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:34:00" (2/3) ... [2022-07-22 17:34:01,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca23585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:34:01, skipping insertion in model container [2022-07-22 17:34:01,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:34:01" (3/3) ... [2022-07-22 17:34:01,962 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_product31.cil.c [2022-07-22 17:34:01,979 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 17:34:01,979 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 17:34:02,044 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 17:34:02,052 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@d4c38a7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3d5dec7b [2022-07-22 17:34:02,053 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 17:34:02,065 INFO L276 IsEmpty]: Start isEmpty. Operand has 370 states, 286 states have (on average 1.5) internal successors, (429), 290 states have internal predecessors, (429), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-22 17:34:02,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 17:34:02,091 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:34:02,092 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-07-22 17:34:02,093 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:34:02,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:34:02,099 INFO L85 PathProgramCache]: Analyzing trace with hash -873528409, now seen corresponding path program 1 times [2022-07-22 17:34:02,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:34:02,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712219613] [2022-07-22 17:34:02,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:34:02,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:34:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:02,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:34:02,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:02,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:34:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:02,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:34:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:02,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:34:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:02,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:34:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:02,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:34:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:02,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:34:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:02,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 17:34:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:02,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 17:34:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:02,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 17:34:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:02,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:34:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:02,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 17:34:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:02,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 17:34:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:02,587 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-22 17:34:02,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:34:02,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712219613] [2022-07-22 17:34:02,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712219613] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:34:02,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191702965] [2022-07-22 17:34:02,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:34:02,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:34:02,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:34:02,599 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) [2022-07-22 17:34:02,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 17:34:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:02,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 17:34:02,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:34:02,953 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 17:34:02,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:34:02,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191702965] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:34:02,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:34:02,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-07-22 17:34:02,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194284420] [2022-07-22 17:34:02,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:34:02,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 17:34:02,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:34:02,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 17:34:02,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:34:02,984 INFO L87 Difference]: Start difference. First operand has 370 states, 286 states have (on average 1.5) internal successors, (429), 290 states have internal predecessors, (429), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:34:03,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:34:03,053 INFO L93 Difference]: Finished difference Result 586 states and 848 transitions. [2022-07-22 17:34:03,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 17:34:03,057 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 101 [2022-07-22 17:34:03,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:34:03,076 INFO L225 Difference]: With dead ends: 586 [2022-07-22 17:34:03,079 INFO L226 Difference]: Without dead ends: 363 [2022-07-22 17:34:03,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:34:03,093 INFO L413 NwaCegarLoop]: 543 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, 543 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 [2022-07-22 17:34:03,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:34:03,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-07-22 17:34:03,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2022-07-22 17:34:03,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 280 states have (on average 1.4928571428571429) internal successors, (418), 283 states have internal predecessors, (418), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-07-22 17:34:03,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 535 transitions. [2022-07-22 17:34:03,172 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 535 transitions. Word has length 101 [2022-07-22 17:34:03,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:34:03,173 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 535 transitions. [2022-07-22 17:34:03,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:34:03,174 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 535 transitions. [2022-07-22 17:34:03,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 17:34:03,178 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:34:03,179 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-07-22 17:34:03,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 17:34:03,394 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 [2022-07-22 17:34:03,394 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:34:03,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:34:03,395 INFO L85 PathProgramCache]: Analyzing trace with hash -238493020, now seen corresponding path program 1 times [2022-07-22 17:34:03,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:34:03,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485259791] [2022-07-22 17:34:03,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:34:03,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:34:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:03,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:34:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:03,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:34:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:03,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:34:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:03,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:34:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:03,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:34:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:03,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:34:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:03,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 17:34:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:03,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 17:34:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:03,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:34:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:03,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 17:34:03,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:03,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:34:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:03,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 17:34:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:03,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 17:34:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:03,615 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-22 17:34:03,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:34:03,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485259791] [2022-07-22 17:34:03,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485259791] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:34:03,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460183423] [2022-07-22 17:34:03,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:34:03,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:34:03,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:34:03,624 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) [2022-07-22 17:34:03,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 17:34:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:03,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 17:34:03,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:34:03,926 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 17:34:03,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:34:03,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460183423] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:34:03,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:34:03,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-22 17:34:03,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733201698] [2022-07-22 17:34:03,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:34:03,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:34:03,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:34:03,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:34:03,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:34:03,930 INFO L87 Difference]: Start difference. First operand 363 states and 535 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:34:03,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:34:03,964 INFO L93 Difference]: Finished difference Result 576 states and 829 transitions. [2022-07-22 17:34:03,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:34:03,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 102 [2022-07-22 17:34:03,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:34:03,968 INFO L225 Difference]: With dead ends: 576 [2022-07-22 17:34:03,969 INFO L226 Difference]: Without dead ends: 366 [2022-07-22 17:34:03,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:34:03,971 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 1 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1064 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 [2022-07-22 17:34:03,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1064 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:34:03,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-07-22 17:34:04,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 365. [2022-07-22 17:34:04,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 282 states have (on average 1.4893617021276595) internal successors, (420), 285 states have internal predecessors, (420), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-07-22 17:34:04,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 537 transitions. [2022-07-22 17:34:04,022 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 537 transitions. Word has length 102 [2022-07-22 17:34:04,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:34:04,023 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 537 transitions. [2022-07-22 17:34:04,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:34:04,023 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 537 transitions. [2022-07-22 17:34:04,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-22 17:34:04,038 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:34:04,039 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-07-22 17:34:04,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 17:34:04,239 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 [2022-07-22 17:34:04,240 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:34:04,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:34:04,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1960641683, now seen corresponding path program 1 times [2022-07-22 17:34:04,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:34:04,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567394631] [2022-07-22 17:34:04,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:34:04,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:34:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:04,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:34:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:04,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:34:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:04,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:34:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:04,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:34:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:04,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:34:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:04,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:34:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:04,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 17:34:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:04,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:34:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:04,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:34:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:04,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:34:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:04,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 17:34:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:04,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 17:34:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:04,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 17:34:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:04,392 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 17:34:04,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:34:04,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567394631] [2022-07-22 17:34:04,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567394631] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:34:04,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281077206] [2022-07-22 17:34:04,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:34:04,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:34:04,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:34:04,396 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) [2022-07-22 17:34:04,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 17:34:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:04,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 1077 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 17:34:04,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:34:04,685 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 17:34:04,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:34:04,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281077206] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:34:04,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:34:04,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-22 17:34:04,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015041722] [2022-07-22 17:34:04,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:34:04,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:34:04,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:34:04,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:34:04,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:34:04,694 INFO L87 Difference]: Start difference. First operand 365 states and 537 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:34:04,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:34:04,748 INFO L93 Difference]: Finished difference Result 760 states and 1133 transitions. [2022-07-22 17:34:04,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:34:04,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 108 [2022-07-22 17:34:04,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:34:04,754 INFO L225 Difference]: With dead ends: 760 [2022-07-22 17:34:04,755 INFO L226 Difference]: Without dead ends: 422 [2022-07-22 17:34:04,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:34:04,759 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 107 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1047 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 [2022-07-22 17:34:04,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 1047 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:34:04,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-07-22 17:34:04,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 414. [2022-07-22 17:34:04,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 320 states have (on average 1.50625) internal successors, (482), 323 states have internal predecessors, (482), 70 states have call successors, (70), 23 states have call predecessors, (70), 23 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2022-07-22 17:34:04,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 621 transitions. [2022-07-22 17:34:04,809 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 621 transitions. Word has length 108 [2022-07-22 17:34:04,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:34:04,809 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 621 transitions. [2022-07-22 17:34:04,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:34:04,810 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 621 transitions. [2022-07-22 17:34:04,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 17:34:04,813 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:34:04,813 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-07-22 17:34:04,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 17:34:05,039 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 [2022-07-22 17:34:05,040 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:34:05,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:34:05,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1642716370, now seen corresponding path program 1 times [2022-07-22 17:34:05,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:34:05,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441815946] [2022-07-22 17:34:05,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:34:05,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:34:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:34:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:34:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:34:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:34:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:34:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:34:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 17:34:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 17:34:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 17:34:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:34:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:34:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 17:34:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 17:34:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,181 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 17:34:05,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:34:05,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441815946] [2022-07-22 17:34:05,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441815946] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:34:05,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890897284] [2022-07-22 17:34:05,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:34:05,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:34:05,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:34:05,183 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) [2022-07-22 17:34:05,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 17:34:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 17:34:05,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:34:05,499 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 17:34:05,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:34:05,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890897284] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:34:05,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:34:05,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-07-22 17:34:05,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405650984] [2022-07-22 17:34:05,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:34:05,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:34:05,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:34:05,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:34:05,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:34:05,502 INFO L87 Difference]: Start difference. First operand 414 states and 621 transitions. Second operand has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-22 17:34:05,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:34:05,572 INFO L93 Difference]: Finished difference Result 819 states and 1232 transitions. [2022-07-22 17:34:05,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:34:05,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 109 [2022-07-22 17:34:05,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:34:05,576 INFO L225 Difference]: With dead ends: 819 [2022-07-22 17:34:05,576 INFO L226 Difference]: Without dead ends: 416 [2022-07-22 17:34:05,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:34:05,579 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 125 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1959 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 [2022-07-22 17:34:05,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1959 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:34:05,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-07-22 17:34:05,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2022-07-22 17:34:05,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 321 states have (on average 1.5046728971962617) internal successors, (483), 325 states have internal predecessors, (483), 70 states have call successors, (70), 23 states have call predecessors, (70), 24 states have return successors, (71), 69 states have call predecessors, (71), 69 states have call successors, (71) [2022-07-22 17:34:05,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 624 transitions. [2022-07-22 17:34:05,599 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 624 transitions. Word has length 109 [2022-07-22 17:34:05,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:34:05,599 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 624 transitions. [2022-07-22 17:34:05,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-22 17:34:05,600 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 624 transitions. [2022-07-22 17:34:05,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-22 17:34:05,602 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:34:05,602 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-07-22 17:34:05,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 17:34:05,815 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 [2022-07-22 17:34:05,816 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:34:05,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:34:05,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1181584103, now seen corresponding path program 1 times [2022-07-22 17:34:05,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:34:05,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397982843] [2022-07-22 17:34:05,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:34:05,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:34:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:34:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:34:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:34:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:34:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 17:34:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 17:34:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 17:34:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 17:34:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 17:34:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 17:34:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:34:05,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 17:34:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 17:34:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:05,972 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 17:34:05,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:34:05,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397982843] [2022-07-22 17:34:05,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397982843] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:34:05,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211030100] [2022-07-22 17:34:05,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:34:05,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:34:05,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:34:05,975 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) [2022-07-22 17:34:05,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 17:34:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:06,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 17:34:06,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:34:06,268 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 17:34:06,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:34:06,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211030100] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:34:06,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:34:06,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-22 17:34:06,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743210975] [2022-07-22 17:34:06,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:34:06,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:34:06,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:34:06,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:34:06,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-22 17:34:06,271 INFO L87 Difference]: Start difference. First operand 416 states and 624 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-22 17:34:06,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:34:06,342 INFO L93 Difference]: Finished difference Result 821 states and 1237 transitions. [2022-07-22 17:34:06,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:34:06,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 110 [2022-07-22 17:34:06,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:34:06,345 INFO L225 Difference]: With dead ends: 821 [2022-07-22 17:34:06,346 INFO L226 Difference]: Without dead ends: 418 [2022-07-22 17:34:06,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:34:06,348 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 124 mSDsluCounter, 1424 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1948 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 [2022-07-22 17:34:06,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1948 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:34:06,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-07-22 17:34:06,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2022-07-22 17:34:06,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 322 states have (on average 1.5031055900621118) internal successors, (484), 327 states have internal predecessors, (484), 70 states have call successors, (70), 23 states have call predecessors, (70), 25 states have return successors, (76), 69 states have call predecessors, (76), 69 states have call successors, (76) [2022-07-22 17:34:06,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 630 transitions. [2022-07-22 17:34:06,366 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 630 transitions. Word has length 110 [2022-07-22 17:34:06,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:34:06,366 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 630 transitions. [2022-07-22 17:34:06,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-22 17:34:06,367 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 630 transitions. [2022-07-22 17:34:06,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 17:34:06,368 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:34:06,369 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-07-22 17:34:06,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 17:34:06,591 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 [2022-07-22 17:34:06,591 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:34:06,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:34:06,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1225166785, now seen corresponding path program 1 times [2022-07-22 17:34:06,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:34:06,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486057822] [2022-07-22 17:34:06,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:34:06,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:34:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:06,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:34:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:06,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:34:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:06,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:34:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:06,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:34:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:06,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:34:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:06,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 17:34:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:06,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 17:34:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:06,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:34:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:06,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 17:34:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:06,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 17:34:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:06,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 17:34:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:06,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 17:34:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:06,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 17:34:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:06,698 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 17:34:06,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:34:06,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486057822] [2022-07-22 17:34:06,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486057822] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:34:06,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:34:06,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:34:06,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192307474] [2022-07-22 17:34:06,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:34:06,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:34:06,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:34:06,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:34:06,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:34:06,700 INFO L87 Difference]: Start difference. First operand 418 states and 630 transitions. Second operand has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-22 17:34:08,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:34:08,634 INFO L93 Difference]: Finished difference Result 999 states and 1504 transitions. [2022-07-22 17:34:08,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 17:34:08,634 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 111 [2022-07-22 17:34:08,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:34:08,638 INFO L225 Difference]: With dead ends: 999 [2022-07-22 17:34:08,638 INFO L226 Difference]: Without dead ends: 604 [2022-07-22 17:34:08,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:34:08,641 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 1380 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2274 mSolverCounterSat, 536 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1397 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 2810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 536 IncrementalHoareTripleChecker+Valid, 2274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:34:08,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1397 Valid, 1455 Invalid, 2810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [536 Valid, 2274 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 17:34:08,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-07-22 17:34:08,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 418. [2022-07-22 17:34:08,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 322 states have (on average 1.5031055900621118) internal successors, (484), 327 states have internal predecessors, (484), 70 states have call successors, (70), 23 states have call predecessors, (70), 25 states have return successors, (75), 69 states have call predecessors, (75), 69 states have call successors, (75) [2022-07-22 17:34:08,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 629 transitions. [2022-07-22 17:34:08,684 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 629 transitions. Word has length 111 [2022-07-22 17:34:08,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:34:08,684 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 629 transitions. [2022-07-22 17:34:08,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-22 17:34:08,685 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 629 transitions. [2022-07-22 17:34:08,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 17:34:08,687 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:34:08,687 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-07-22 17:34:08,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 17:34:08,687 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:34:08,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:34:08,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1394398968, now seen corresponding path program 2 times [2022-07-22 17:34:08,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:34:08,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118231670] [2022-07-22 17:34:08,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:34:08,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:34:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:08,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:34:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:08,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:34:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:08,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:34:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:08,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:34:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:08,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:34:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:08,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:34:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:08,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 17:34:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:08,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 17:34:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:08,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 17:34:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:08,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 17:34:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:08,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 17:34:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:08,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:34:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:08,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:34:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:08,798 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 17:34:08,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:34:08,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118231670] [2022-07-22 17:34:08,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118231670] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:34:08,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:34:08,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:34:08,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140451855] [2022-07-22 17:34:08,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:34:08,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:34:08,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:34:08,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:34:08,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:34:08,801 INFO L87 Difference]: Start difference. First operand 418 states and 629 transitions. Second operand has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-22 17:34:10,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:34:10,620 INFO L93 Difference]: Finished difference Result 1001 states and 1507 transitions. [2022-07-22 17:34:10,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 17:34:10,621 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2022-07-22 17:34:10,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:34:10,625 INFO L225 Difference]: With dead ends: 1001 [2022-07-22 17:34:10,625 INFO L226 Difference]: Without dead ends: 606 [2022-07-22 17:34:10,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:34:10,627 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 1343 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2305 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1360 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 2861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 2305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 17:34:10,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1360 Valid, 1462 Invalid, 2861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [556 Valid, 2305 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 17:34:10,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2022-07-22 17:34:10,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 420. [2022-07-22 17:34:10,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 323 states have (on average 1.501547987616099) internal successors, (485), 329 states have internal predecessors, (485), 70 states have call successors, (70), 23 states have call predecessors, (70), 26 states have return successors, (77), 69 states have call predecessors, (77), 69 states have call successors, (77) [2022-07-22 17:34:10,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 632 transitions. [2022-07-22 17:34:10,659 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 632 transitions. Word has length 112 [2022-07-22 17:34:10,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:34:10,660 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 632 transitions. [2022-07-22 17:34:10,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-22 17:34:10,660 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 632 transitions. [2022-07-22 17:34:10,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 17:34:10,664 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:34:10,664 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-07-22 17:34:10,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 17:34:10,664 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:34:10,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:34:10,665 INFO L85 PathProgramCache]: Analyzing trace with hash 2017001956, now seen corresponding path program 1 times [2022-07-22 17:34:10,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:34:10,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696960470] [2022-07-22 17:34:10,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:34:10,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:34:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:10,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:34:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:10,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:34:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:10,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:34:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:10,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:34:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:10,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:34:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:10,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:34:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:10,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:34:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:10,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 17:34:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:10,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:34:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:10,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 17:34:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:10,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 17:34:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:10,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 17:34:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:10,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 17:34:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:10,844 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 17:34:10,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:34:10,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696960470] [2022-07-22 17:34:10,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696960470] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:34:10,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:34:10,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 17:34:10,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788347552] [2022-07-22 17:34:10,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:34:10,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 17:34:10,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:34:10,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 17:34:10,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:34:10,847 INFO L87 Difference]: Start difference. First operand 420 states and 632 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-22 17:34:13,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:34:13,331 INFO L93 Difference]: Finished difference Result 999 states and 1502 transitions. [2022-07-22 17:34:13,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:34:13,332 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 113 [2022-07-22 17:34:13,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:34:13,336 INFO L225 Difference]: With dead ends: 999 [2022-07-22 17:34:13,336 INFO L226 Difference]: Without dead ends: 606 [2022-07-22 17:34:13,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-22 17:34:13,339 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 1505 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3953 mSolverCounterSat, 594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 4547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 3953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:34:13,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 1727 Invalid, 4547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [594 Valid, 3953 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 17:34:13,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2022-07-22 17:34:13,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 420. [2022-07-22 17:34:13,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 323 states have (on average 1.501547987616099) internal successors, (485), 329 states have internal predecessors, (485), 70 states have call successors, (70), 23 states have call predecessors, (70), 26 states have return successors, (76), 69 states have call predecessors, (76), 69 states have call successors, (76) [2022-07-22 17:34:13,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 631 transitions. [2022-07-22 17:34:13,389 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 631 transitions. Word has length 113 [2022-07-22 17:34:13,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:34:13,389 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 631 transitions. [2022-07-22 17:34:13,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-22 17:34:13,389 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 631 transitions. [2022-07-22 17:34:13,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 17:34:13,391 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:34:13,391 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-07-22 17:34:13,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 17:34:13,392 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:34:13,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:34:13,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1618188784, now seen corresponding path program 2 times [2022-07-22 17:34:13,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:34:13,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290959808] [2022-07-22 17:34:13,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:34:13,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:34:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:13,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:34:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:13,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:34:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:13,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:34:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:13,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:34:13,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:13,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:34:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:13,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:34:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:13,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 17:34:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:13,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 17:34:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:13,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:34:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:13,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 17:34:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:13,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 17:34:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:13,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:34:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:13,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 17:34:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:13,538 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 17:34:13,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:34:13,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290959808] [2022-07-22 17:34:13,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290959808] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:34:13,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:34:13,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 17:34:13,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561951835] [2022-07-22 17:34:13,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:34:13,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 17:34:13,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:34:13,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 17:34:13,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:34:13,540 INFO L87 Difference]: Start difference. First operand 420 states and 631 transitions. Second operand has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-22 17:34:15,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:34:15,883 INFO L93 Difference]: Finished difference Result 1001 states and 1508 transitions. [2022-07-22 17:34:15,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:34:15,883 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 114 [2022-07-22 17:34:15,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:34:15,887 INFO L225 Difference]: With dead ends: 1001 [2022-07-22 17:34:15,887 INFO L226 Difference]: Without dead ends: 608 [2022-07-22 17:34:15,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-22 17:34:15,890 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 1463 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 4107 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 4695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 4107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:34:15,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1463 Valid, 1749 Invalid, 4695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 4107 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 17:34:15,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-07-22 17:34:15,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 422. [2022-07-22 17:34:15,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 324 states have (on average 1.5) internal successors, (486), 331 states have internal predecessors, (486), 70 states have call successors, (70), 23 states have call predecessors, (70), 27 states have return successors, (81), 69 states have call predecessors, (81), 69 states have call successors, (81) [2022-07-22 17:34:15,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 637 transitions. [2022-07-22 17:34:15,933 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 637 transitions. Word has length 114 [2022-07-22 17:34:15,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:34:15,934 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 637 transitions. [2022-07-22 17:34:15,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-22 17:34:15,934 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 637 transitions. [2022-07-22 17:34:15,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-22 17:34:15,936 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:34:15,937 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-07-22 17:34:15,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 17:34:15,937 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:34:15,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:34:15,937 INFO L85 PathProgramCache]: Analyzing trace with hash -278494295, now seen corresponding path program 1 times [2022-07-22 17:34:15,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:34:15,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389377528] [2022-07-22 17:34:15,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:34:15,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:34:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:15,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:34:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:16,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:34:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:16,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:34:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:16,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:34:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:16,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:34:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:16,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:34:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:16,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 17:34:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:16,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 17:34:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:16,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:34:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:16,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:34:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:16,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 17:34:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:16,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 17:34:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:16,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 17:34:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:16,045 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:34:16,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:34:16,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389377528] [2022-07-22 17:34:16,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389377528] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:34:16,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650851479] [2022-07-22 17:34:16,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:34:16,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:34:16,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:34:16,052 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) [2022-07-22 17:34:16,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 17:34:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:16,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 17:34:16,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:34:16,298 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:34:16,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:34:16,370 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:34:16,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650851479] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:34:16,371 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:34:16,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2022-07-22 17:34:16,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112519394] [2022-07-22 17:34:16,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:34:16,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 17:34:16,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:34:16,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 17:34:16,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:34:16,373 INFO L87 Difference]: Start difference. First operand 422 states and 637 transitions. Second operand has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 7 states have internal predecessors, (111), 2 states have call successors, (31), 6 states have call predecessors, (31), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 17:34:18,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:34:18,239 INFO L93 Difference]: Finished difference Result 1170 states and 1836 transitions. [2022-07-22 17:34:18,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 17:34:18,240 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 7 states have internal predecessors, (111), 2 states have call successors, (31), 6 states have call predecessors, (31), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 115 [2022-07-22 17:34:18,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:34:18,246 INFO L225 Difference]: With dead ends: 1170 [2022-07-22 17:34:18,246 INFO L226 Difference]: Without dead ends: 960 [2022-07-22 17:34:18,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:34:18,249 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 1570 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 2648 mSolverCounterSat, 675 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 3323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 675 IncrementalHoareTripleChecker+Valid, 2648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:34:18,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1615 Valid, 1964 Invalid, 3323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [675 Valid, 2648 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 17:34:18,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2022-07-22 17:34:18,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 750. [2022-07-22 17:34:18,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 588 states have (on average 1.5714285714285714) internal successors, (924), 595 states have internal predecessors, (924), 134 states have call successors, (134), 23 states have call predecessors, (134), 27 states have return successors, (155), 133 states have call predecessors, (155), 133 states have call successors, (155) [2022-07-22 17:34:18,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1213 transitions. [2022-07-22 17:34:18,299 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1213 transitions. Word has length 115 [2022-07-22 17:34:18,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:34:18,299 INFO L495 AbstractCegarLoop]: Abstraction has 750 states and 1213 transitions. [2022-07-22 17:34:18,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 7 states have internal predecessors, (111), 2 states have call successors, (31), 6 states have call predecessors, (31), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 17:34:18,299 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1213 transitions. [2022-07-22 17:34:18,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-22 17:34:18,303 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:34:18,303 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-07-22 17:34:18,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 17:34:18,519 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 [2022-07-22 17:34:18,520 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:34:18,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:34:18,520 INFO L85 PathProgramCache]: Analyzing trace with hash 2073879302, now seen corresponding path program 1 times [2022-07-22 17:34:18,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:34:18,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800652759] [2022-07-22 17:34:18,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:34:18,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:34:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:18,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:34:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:18,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:34:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:18,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:34:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:18,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:34:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:18,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:34:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:18,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:34:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:18,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:34:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:18,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 17:34:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:18,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 17:34:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:18,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 17:34:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:18,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 17:34:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:18,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 17:34:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:18,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 17:34:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:18,620 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:34:18,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:34:18,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800652759] [2022-07-22 17:34:18,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800652759] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:34:18,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:34:18,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:34:18,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762847550] [2022-07-22 17:34:18,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:34:18,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:34:18,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:34:18,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:34:18,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:34:18,622 INFO L87 Difference]: Start difference. First operand 750 states and 1213 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:34:19,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:34:19,945 INFO L93 Difference]: Finished difference Result 1951 states and 3207 transitions. [2022-07-22 17:34:19,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:34:19,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2022-07-22 17:34:19,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:34:19,953 INFO L225 Difference]: With dead ends: 1951 [2022-07-22 17:34:19,953 INFO L226 Difference]: Without dead ends: 1269 [2022-07-22 17:34:19,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:34:19,957 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 1401 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1416 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 1736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 597 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:34:19,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1416 Valid, 1288 Invalid, 1736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [597 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 17:34:19,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2022-07-22 17:34:20,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1075. [2022-07-22 17:34:20,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 849 states have (on average 1.5889281507656066) internal successors, (1349), 856 states have internal predecessors, (1349), 198 states have call successors, (198), 23 states have call predecessors, (198), 27 states have return successors, (229), 197 states have call predecessors, (229), 197 states have call successors, (229) [2022-07-22 17:34:20,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1776 transitions. [2022-07-22 17:34:20,022 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1776 transitions. Word has length 121 [2022-07-22 17:34:20,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:34:20,023 INFO L495 AbstractCegarLoop]: Abstraction has 1075 states and 1776 transitions. [2022-07-22 17:34:20,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:34:20,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1776 transitions. [2022-07-22 17:34:20,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-22 17:34:20,028 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:34:20,028 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-07-22 17:34:20,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 17:34:20,029 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:34:20,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:34:20,029 INFO L85 PathProgramCache]: Analyzing trace with hash -337144750, now seen corresponding path program 1 times [2022-07-22 17:34:20,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:34:20,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574597430] [2022-07-22 17:34:20,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:34:20,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:34:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:20,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:34:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:20,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:34:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:20,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:34:20,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:20,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:34:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:20,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:34:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:20,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:34:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:20,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:34:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:20,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:34:20,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:20,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 17:34:20,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:20,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:34:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:20,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 17:34:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:20,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 17:34:20,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:20,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 17:34:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:20,120 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:34:20,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:34:20,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574597430] [2022-07-22 17:34:20,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574597430] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:34:20,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:34:20,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:34:20,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019736612] [2022-07-22 17:34:20,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:34:20,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:34:20,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:34:20,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:34:20,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:34:20,122 INFO L87 Difference]: Start difference. First operand 1075 states and 1776 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:34:21,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:34:21,417 INFO L93 Difference]: Finished difference Result 2731 states and 4556 transitions. [2022-07-22 17:34:21,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:34:21,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2022-07-22 17:34:21,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:34:21,427 INFO L225 Difference]: With dead ends: 2731 [2022-07-22 17:34:21,427 INFO L226 Difference]: Without dead ends: 1777 [2022-07-22 17:34:21,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:34:21,431 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 1362 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 1731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 580 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:34:21,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 1312 Invalid, 1731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [580 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 17:34:21,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1777 states. [2022-07-22 17:34:21,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1777 to 1583. [2022-07-22 17:34:21,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1262 states have (on average 1.6006339144215531) internal successors, (2020), 1269 states have internal predecessors, (2020), 293 states have call successors, (293), 23 states have call predecessors, (293), 27 states have return successors, (324), 292 states have call predecessors, (324), 292 states have call successors, (324) [2022-07-22 17:34:21,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2637 transitions. [2022-07-22 17:34:21,518 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2637 transitions. Word has length 122 [2022-07-22 17:34:21,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:34:21,519 INFO L495 AbstractCegarLoop]: Abstraction has 1583 states and 2637 transitions. [2022-07-22 17:34:21,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:34:21,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2637 transitions. [2022-07-22 17:34:21,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-22 17:34:21,526 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:34:21,527 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-07-22 17:34:21,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 17:34:21,527 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:34:21,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:34:21,528 INFO L85 PathProgramCache]: Analyzing trace with hash 740211048, now seen corresponding path program 1 times [2022-07-22 17:34:21,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:34:21,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646413942] [2022-07-22 17:34:21,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:34:21,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:34:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:21,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:34:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:21,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:34:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:21,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:34:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:21,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:34:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:21,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:34:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:21,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:34:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:21,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 17:34:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:21,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:34:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:21,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:34:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:21,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:34:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:21,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:34:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:21,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 17:34:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:21,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 17:34:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:21,610 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:34:21,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:34:21,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646413942] [2022-07-22 17:34:21,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646413942] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:34:21,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:34:21,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:34:21,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923460822] [2022-07-22 17:34:21,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:34:21,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:34:21,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:34:21,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:34:21,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:34:21,612 INFO L87 Difference]: Start difference. First operand 1583 states and 2637 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:34:22,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:34:22,849 INFO L93 Difference]: Finished difference Result 3883 states and 6565 transitions. [2022-07-22 17:34:22,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:34:22,850 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2022-07-22 17:34:22,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:34:22,863 INFO L225 Difference]: With dead ends: 3883 [2022-07-22 17:34:22,863 INFO L226 Difference]: Without dead ends: 2546 [2022-07-22 17:34:22,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:34:22,868 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 1397 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 1741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:34:22,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1412 Valid, 1283 Invalid, 1741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 17:34:22,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2022-07-22 17:34:22,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 2352. [2022-07-22 17:34:22,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2352 states, 1908 states have (on average 1.609538784067086) internal successors, (3071), 1915 states have internal predecessors, (3071), 416 states have call successors, (416), 23 states have call predecessors, (416), 27 states have return successors, (463), 415 states have call predecessors, (463), 415 states have call successors, (463) [2022-07-22 17:34:22,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 3950 transitions. [2022-07-22 17:34:22,991 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 3950 transitions. Word has length 123 [2022-07-22 17:34:22,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:34:22,991 INFO L495 AbstractCegarLoop]: Abstraction has 2352 states and 3950 transitions. [2022-07-22 17:34:22,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:34:22,992 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 3950 transitions. [2022-07-22 17:34:23,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-22 17:34:23,002 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:34:23,003 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-07-22 17:34:23,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 17:34:23,003 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:34:23,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:34:23,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1646975283, now seen corresponding path program 1 times [2022-07-22 17:34:23,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:34:23,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472767466] [2022-07-22 17:34:23,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:34:23,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:34:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:23,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:34:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:23,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:34:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:23,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:34:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:23,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:34:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:23,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:34:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:23,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:34:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:23,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 17:34:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:23,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:34:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:23,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:34:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:23,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 17:34:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:23,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 17:34:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:23,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 17:34:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:23,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 17:34:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:23,095 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:34:23,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:34:23,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472767466] [2022-07-22 17:34:23,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472767466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:34:23,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:34:23,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:34:23,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668002414] [2022-07-22 17:34:23,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:34:23,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:34:23,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:34:23,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:34:23,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:34:23,097 INFO L87 Difference]: Start difference. First operand 2352 states and 3950 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:34:24,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:34:24,522 INFO L93 Difference]: Finished difference Result 5677 states and 9699 transitions. [2022-07-22 17:34:24,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:34:24,522 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2022-07-22 17:34:24,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:34:24,540 INFO L225 Difference]: With dead ends: 5677 [2022-07-22 17:34:24,541 INFO L226 Difference]: Without dead ends: 3775 [2022-07-22 17:34:24,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:34:24,547 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 1397 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 603 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 1736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 603 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:34:24,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1412 Valid, 1275 Invalid, 1736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [603 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 17:34:24,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2022-07-22 17:34:24,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3581. [2022-07-22 17:34:24,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3581 states, 2958 states have (on average 1.6152805949966194) internal successors, (4778), 2965 states have internal predecessors, (4778), 595 states have call successors, (595), 23 states have call predecessors, (595), 27 states have return successors, (668), 594 states have call predecessors, (668), 594 states have call successors, (668) [2022-07-22 17:34:24,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3581 states to 3581 states and 6041 transitions. [2022-07-22 17:34:24,738 INFO L78 Accepts]: Start accepts. Automaton has 3581 states and 6041 transitions. Word has length 124 [2022-07-22 17:34:24,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:34:24,738 INFO L495 AbstractCegarLoop]: Abstraction has 3581 states and 6041 transitions. [2022-07-22 17:34:24,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:34:24,739 INFO L276 IsEmpty]: Start isEmpty. Operand 3581 states and 6041 transitions. [2022-07-22 17:34:24,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-22 17:34:24,750 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:34:24,750 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-07-22 17:34:24,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 17:34:24,751 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:34:24,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:34:24,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1632985316, now seen corresponding path program 1 times [2022-07-22 17:34:24,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:34:24,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747401124] [2022-07-22 17:34:24,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:34:24,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:34:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:24,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:34:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:24,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:34:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:24,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:34:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:24,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:34:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:24,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:34:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:24,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:34:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:24,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 17:34:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:24,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:34:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:24,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 17:34:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:24,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 17:34:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:24,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:34:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:24,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 17:34:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:24,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 17:34:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:24,848 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:34:24,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:34:24,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747401124] [2022-07-22 17:34:24,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747401124] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:34:24,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:34:24,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:34:24,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336339032] [2022-07-22 17:34:24,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:34:24,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:34:24,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:34:24,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:34:24,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:34:24,851 INFO L87 Difference]: Start difference. First operand 3581 states and 6041 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:34:26,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:34:26,261 INFO L93 Difference]: Finished difference Result 8625 states and 14846 transitions. [2022-07-22 17:34:26,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:34:26,262 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2022-07-22 17:34:26,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:34:26,290 INFO L225 Difference]: With dead ends: 8625 [2022-07-22 17:34:26,291 INFO L226 Difference]: Without dead ends: 5806 [2022-07-22 17:34:26,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:34:26,301 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 1308 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 1793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:34:26,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1323 Valid, 1341 Invalid, 1793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 17:34:26,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5806 states. [2022-07-22 17:34:26,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5806 to 5612. [2022-07-22 17:34:26,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5612 states, 4613 states have (on average 1.6106655105137655) internal successors, (7430), 4620 states have internal predecessors, (7430), 971 states have call successors, (971), 23 states have call predecessors, (971), 27 states have return successors, (1088), 970 states have call predecessors, (1088), 970 states have call successors, (1088) [2022-07-22 17:34:26,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5612 states to 5612 states and 9489 transitions. [2022-07-22 17:34:26,689 INFO L78 Accepts]: Start accepts. Automaton has 5612 states and 9489 transitions. Word has length 125 [2022-07-22 17:34:26,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:34:26,689 INFO L495 AbstractCegarLoop]: Abstraction has 5612 states and 9489 transitions. [2022-07-22 17:34:26,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:34:26,690 INFO L276 IsEmpty]: Start isEmpty. Operand 5612 states and 9489 transitions. [2022-07-22 17:34:26,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-22 17:34:26,707 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:34:26,708 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-07-22 17:34:26,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 17:34:26,708 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:34:26,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:34:26,709 INFO L85 PathProgramCache]: Analyzing trace with hash 569175479, now seen corresponding path program 1 times [2022-07-22 17:34:26,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:34:26,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041694819] [2022-07-22 17:34:26,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:34:26,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:34:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:26,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:34:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:26,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:34:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:26,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:34:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:26,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:34:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:26,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:34:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:26,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:34:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:26,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 17:34:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:26,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:34:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:26,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 17:34:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:26,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 17:34:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:26,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 17:34:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:26,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 17:34:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:26,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 17:34:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:26,805 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:34:26,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:34:26,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041694819] [2022-07-22 17:34:26,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041694819] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:34:26,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:34:26,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:34:26,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659659019] [2022-07-22 17:34:26,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:34:26,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:34:26,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:34:26,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:34:26,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:34:26,807 INFO L87 Difference]: Start difference. First operand 5612 states and 9489 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:34:28,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:34:28,407 INFO L93 Difference]: Finished difference Result 13962 states and 24067 transitions. [2022-07-22 17:34:28,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:34:28,407 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2022-07-22 17:34:28,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:34:28,450 INFO L225 Difference]: With dead ends: 13962 [2022-07-22 17:34:28,450 INFO L226 Difference]: Without dead ends: 9489 [2022-07-22 17:34:28,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:34:28,467 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 1355 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 1742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:34:28,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1370 Valid, 1288 Invalid, 1742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 17:34:28,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9489 states. [2022-07-22 17:34:28,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9489 to 9295. [2022-07-22 17:34:28,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9295 states, 7690 states have (on average 1.6093628088426528) internal successors, (12376), 7697 states have internal predecessors, (12376), 1577 states have call successors, (1577), 23 states have call predecessors, (1577), 27 states have return successors, (1772), 1576 states have call predecessors, (1772), 1576 states have call successors, (1772) [2022-07-22 17:34:29,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9295 states to 9295 states and 15725 transitions. [2022-07-22 17:34:29,053 INFO L78 Accepts]: Start accepts. Automaton has 9295 states and 15725 transitions. Word has length 126 [2022-07-22 17:34:29,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:34:29,053 INFO L495 AbstractCegarLoop]: Abstraction has 9295 states and 15725 transitions. [2022-07-22 17:34:29,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:34:29,054 INFO L276 IsEmpty]: Start isEmpty. Operand 9295 states and 15725 transitions. [2022-07-22 17:34:29,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-22 17:34:29,079 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:34:29,080 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-07-22 17:34:29,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 17:34:29,080 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:34:29,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:34:29,081 INFO L85 PathProgramCache]: Analyzing trace with hash 856995474, now seen corresponding path program 1 times [2022-07-22 17:34:29,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:34:29,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115469071] [2022-07-22 17:34:29,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:34:29,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:34:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:29,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:34:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:29,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:34:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:29,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:34:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:29,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:34:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:29,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:34:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:29,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:34:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:29,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:34:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:29,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 17:34:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:29,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 17:34:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:29,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 17:34:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:29,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 17:34:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:29,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 17:34:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:29,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 17:34:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:29,189 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:34:29,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:34:29,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115469071] [2022-07-22 17:34:29,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115469071] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:34:29,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:34:29,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:34:29,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17941594] [2022-07-22 17:34:29,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:34:29,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:34:29,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:34:29,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:34:29,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:34:29,192 INFO L87 Difference]: Start difference. First operand 9295 states and 15725 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:34:30,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:34:30,873 INFO L93 Difference]: Finished difference Result 24146 states and 41613 transitions. [2022-07-22 17:34:30,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:34:30,874 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2022-07-22 17:34:30,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:34:30,935 INFO L225 Difference]: With dead ends: 24146 [2022-07-22 17:34:30,935 INFO L226 Difference]: Without dead ends: 16442 [2022-07-22 17:34:30,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:34:30,960 INFO L413 NwaCegarLoop]: 644 mSDtfsCounter, 1395 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1410 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 1737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 597 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:34:30,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1410 Valid, 1297 Invalid, 1737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [597 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 17:34:30,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16442 states. [2022-07-22 17:34:31,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16442 to 16248. [2022-07-22 17:34:31,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16248 states, 13440 states have (on average 1.6010416666666667) internal successors, (21518), 13447 states have internal predecessors, (21518), 2780 states have call successors, (2780), 23 states have call predecessors, (2780), 27 states have return successors, (3119), 2779 states have call predecessors, (3119), 2779 states have call successors, (3119) [2022-07-22 17:34:31,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16248 states to 16248 states and 27417 transitions. [2022-07-22 17:34:31,732 INFO L78 Accepts]: Start accepts. Automaton has 16248 states and 27417 transitions. Word has length 127 [2022-07-22 17:34:31,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:34:31,732 INFO L495 AbstractCegarLoop]: Abstraction has 16248 states and 27417 transitions. [2022-07-22 17:34:31,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:34:31,732 INFO L276 IsEmpty]: Start isEmpty. Operand 16248 states and 27417 transitions. [2022-07-22 17:34:31,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-22 17:34:31,763 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:34:31,764 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-07-22 17:34:31,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 17:34:31,764 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:34:31,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:34:31,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1671109704, now seen corresponding path program 1 times [2022-07-22 17:34:31,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:34:31,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338775928] [2022-07-22 17:34:31,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:34:31,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:34:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:31,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:34:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:31,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:34:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:31,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:34:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:31,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:34:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:31,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:34:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:31,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:34:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:31,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:34:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:31,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 17:34:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:31,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 17:34:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:31,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 17:34:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:31,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 17:34:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:31,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 17:34:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:31,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 17:34:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:31,954 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:34:31,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:34:31,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338775928] [2022-07-22 17:34:31,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338775928] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:34:31,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:34:31,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:34:31,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58037266] [2022-07-22 17:34:31,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:34:31,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:34:31,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:34:31,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:34:31,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:34:31,958 INFO L87 Difference]: Start difference. First operand 16248 states and 27417 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:34:34,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:34:34,126 INFO L93 Difference]: Finished difference Result 43112 states and 74212 transitions. [2022-07-22 17:34:34,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:34:34,126 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2022-07-22 17:34:34,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:34:34,249 INFO L225 Difference]: With dead ends: 43112 [2022-07-22 17:34:34,249 INFO L226 Difference]: Without dead ends: 29097 [2022-07-22 17:34:34,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:34:34,393 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 1319 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 1776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:34:34,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1334 Valid, 1313 Invalid, 1776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 17:34:34,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29097 states. [2022-07-22 17:34:35,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29097 to 28903. [2022-07-22 17:34:35,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28903 states, 24056 states have (on average 1.5971898902560693) internal successors, (38422), 24063 states have internal predecessors, (38422), 4819 states have call successors, (4819), 23 states have call predecessors, (4819), 27 states have return successors, (5432), 4818 states have call predecessors, (5432), 4818 states have call successors, (5432) [2022-07-22 17:34:35,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28903 states to 28903 states and 48673 transitions. [2022-07-22 17:34:35,611 INFO L78 Accepts]: Start accepts. Automaton has 28903 states and 48673 transitions. Word has length 128 [2022-07-22 17:34:35,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:34:35,612 INFO L495 AbstractCegarLoop]: Abstraction has 28903 states and 48673 transitions. [2022-07-22 17:34:35,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:34:35,612 INFO L276 IsEmpty]: Start isEmpty. Operand 28903 states and 48673 transitions. [2022-07-22 17:34:35,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-22 17:34:35,646 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:34:35,646 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-07-22 17:34:35,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 17:34:35,647 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:34:35,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:34:35,647 INFO L85 PathProgramCache]: Analyzing trace with hash 104454580, now seen corresponding path program 1 times [2022-07-22 17:34:35,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:34:35,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676148661] [2022-07-22 17:34:35,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:34:35,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:34:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:35,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:34:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:35,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:34:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:35,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:34:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:35,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:34:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:35,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:34:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:35,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:34:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:35,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:34:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:35,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 17:34:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:35,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 17:34:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:35,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:34:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:35,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 17:34:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:35,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 17:34:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:35,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 17:34:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:34:35,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:34:35,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676148661] [2022-07-22 17:34:35,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676148661] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:34:35,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:34:35,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:34:35,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034397305] [2022-07-22 17:34:35,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:34:35,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:34:35,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:34:35,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:34:35,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:34:35,744 INFO L87 Difference]: Start difference. First operand 28903 states and 48673 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:34:38,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:34:38,923 INFO L93 Difference]: Finished difference Result 78874 states and 134971 transitions. [2022-07-22 17:34:38,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:34:38,923 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2022-07-22 17:34:38,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:34:39,107 INFO L225 Difference]: With dead ends: 78874 [2022-07-22 17:34:39,107 INFO L226 Difference]: Without dead ends: 52976 [2022-07-22 17:34:39,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:34:39,179 INFO L413 NwaCegarLoop]: 665 mSDtfsCounter, 1358 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:34:39,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1373 Valid, 1306 Invalid, 1738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 17:34:39,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52976 states. [2022-07-22 17:34:41,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52976 to 52782. [2022-07-22 17:34:41,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52782 states, 44220 states have (on average 1.5918362731795568) internal successors, (70391), 44227 states have internal predecessors, (70391), 8534 states have call successors, (8534), 23 states have call predecessors, (8534), 27 states have return successors, (9679), 8533 states have call predecessors, (9679), 8533 states have call successors, (9679) [2022-07-22 17:34:41,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52782 states to 52782 states and 88604 transitions. [2022-07-22 17:34:41,801 INFO L78 Accepts]: Start accepts. Automaton has 52782 states and 88604 transitions. Word has length 129 [2022-07-22 17:34:41,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:34:41,802 INFO L495 AbstractCegarLoop]: Abstraction has 52782 states and 88604 transitions. [2022-07-22 17:34:41,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:34:41,802 INFO L276 IsEmpty]: Start isEmpty. Operand 52782 states and 88604 transitions. [2022-07-22 17:34:41,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-22 17:34:41,843 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:34:41,843 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-07-22 17:34:41,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 17:34:41,843 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:34:41,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:34:41,844 INFO L85 PathProgramCache]: Analyzing trace with hash 395645336, now seen corresponding path program 1 times [2022-07-22 17:34:41,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:34:41,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695415376] [2022-07-22 17:34:41,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:34:41,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:34:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:41,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:34:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:41,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:34:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:41,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:34:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:41,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:34:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:41,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:34:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:41,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:34:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:41,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:34:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:41,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 17:34:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:41,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:34:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:41,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 17:34:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:41,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:34:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:41,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 17:34:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:41,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 17:34:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:41,936 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:34:41,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:34:41,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695415376] [2022-07-22 17:34:41,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695415376] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:34:41,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:34:41,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:34:41,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764478196] [2022-07-22 17:34:41,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:34:41,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:34:41,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:34:41,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:34:41,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:34:41,939 INFO L87 Difference]: Start difference. First operand 52782 states and 88604 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:34:46,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:34:46,097 INFO L93 Difference]: Finished difference Result 98645 states and 169158 transitions. [2022-07-22 17:34:46,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:34:46,097 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2022-07-22 17:34:46,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:34:46,482 INFO L225 Difference]: With dead ends: 98645 [2022-07-22 17:34:46,483 INFO L226 Difference]: Without dead ends: 98435 [2022-07-22 17:34:46,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:34:46,532 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 1343 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:34:46,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1358 Valid, 1290 Invalid, 1765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 17:34:46,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98435 states. [2022-07-22 17:34:50,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98435 to 98241. [2022-07-22 17:34:50,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98241 states, 82880 states have (on average 1.5849541505791507) internal successors, (131361), 82887 states have internal predecessors, (131361), 15333 states have call successors, (15333), 23 states have call predecessors, (15333), 27 states have return successors, (17524), 15332 states have call predecessors, (17524), 15332 states have call successors, (17524) [2022-07-22 17:34:51,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98241 states to 98241 states and 164218 transitions. [2022-07-22 17:34:51,160 INFO L78 Accepts]: Start accepts. Automaton has 98241 states and 164218 transitions. Word has length 130 [2022-07-22 17:34:51,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:34:51,161 INFO L495 AbstractCegarLoop]: Abstraction has 98241 states and 164218 transitions. [2022-07-22 17:34:51,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:34:51,161 INFO L276 IsEmpty]: Start isEmpty. Operand 98241 states and 164218 transitions. [2022-07-22 17:34:51,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-22 17:34:51,203 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:34:51,203 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-07-22 17:34:51,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 17:34:51,204 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:34:51,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:34:51,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1107027763, now seen corresponding path program 1 times [2022-07-22 17:34:51,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:34:51,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284127782] [2022-07-22 17:34:51,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:34:51,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:34:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:51,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:34:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:51,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:34:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:51,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:34:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:51,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:34:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:51,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:34:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:51,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:34:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:51,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:34:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:51,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 17:34:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:51,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:34:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:51,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:34:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:51,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 17:34:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:51,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 17:34:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:51,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 17:34:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:34:51,420 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:34:51,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:34:51,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284127782] [2022-07-22 17:34:51,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284127782] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:34:51,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:34:51,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-22 17:34:51,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605084015] [2022-07-22 17:34:51,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:34:51,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 17:34:51,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:34:51,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 17:34:51,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2022-07-22 17:34:51,424 INFO L87 Difference]: Start difference. First operand 98241 states and 164218 transitions. Second operand has 18 states, 16 states have (on average 5.625) internal successors, (90), 12 states have internal predecessors, (90), 6 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-22 17:35:04,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:35:04,770 INFO L93 Difference]: Finished difference Result 196799 states and 340738 transitions. [2022-07-22 17:35:04,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-22 17:35:04,770 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.625) internal successors, (90), 12 states have internal predecessors, (90), 6 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 131 [2022-07-22 17:35:04,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:35:05,939 INFO L225 Difference]: With dead ends: 196799 [2022-07-22 17:35:05,940 INFO L226 Difference]: Without dead ends: 196595 [2022-07-22 17:35:06,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1281 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=872, Invalid=3820, Unknown=0, NotChecked=0, Total=4692 [2022-07-22 17:35:06,055 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 5417 mSDsluCounter, 2793 mSDsCounter, 0 mSdLazyCounter, 11544 mSolverCounterSat, 3051 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5417 SdHoareTripleChecker+Valid, 3532 SdHoareTripleChecker+Invalid, 14595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3051 IncrementalHoareTripleChecker+Valid, 11544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:35:06,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5417 Valid, 3532 Invalid, 14595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3051 Valid, 11544 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-07-22 17:35:06,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196595 states. [2022-07-22 17:35:14,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196595 to 195831. [2022-07-22 17:35:14,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195831 states, 165256 states have (on average 1.5855400106501427) internal successors, (262020), 165163 states have internal predecessors, (262020), 30502 states have call successors, (30502), 62 states have call predecessors, (30502), 72 states have return successors, (38165), 30613 states have call predecessors, (38165), 30499 states have call successors, (38165) [2022-07-22 17:35:15,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195831 states to 195831 states and 330687 transitions. [2022-07-22 17:35:15,373 INFO L78 Accepts]: Start accepts. Automaton has 195831 states and 330687 transitions. Word has length 131 [2022-07-22 17:35:15,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:35:15,374 INFO L495 AbstractCegarLoop]: Abstraction has 195831 states and 330687 transitions. [2022-07-22 17:35:15,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.625) internal successors, (90), 12 states have internal predecessors, (90), 6 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-22 17:35:15,374 INFO L276 IsEmpty]: Start isEmpty. Operand 195831 states and 330687 transitions. [2022-07-22 17:35:15,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-22 17:35:15,445 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:35:15,445 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-07-22 17:35:15,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 17:35:15,446 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:35:15,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:35:15,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1288288394, now seen corresponding path program 1 times [2022-07-22 17:35:15,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:35:15,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076530664] [2022-07-22 17:35:15,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:35:15,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:35:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:35:15,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:35:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:35:15,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:35:15,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:35:15,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:35:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:35:15,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:35:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:35:15,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:35:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:35:15,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:35:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:35:15,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:35:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:35:15,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 17:35:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:35:15,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:35:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:35:15,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:35:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:35:15,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 17:35:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:35:15,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 17:35:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:35:15,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 17:35:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:35:15,634 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:35:15,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:35:15,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076530664] [2022-07-22 17:35:15,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076530664] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:35:15,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:35:15,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-22 17:35:15,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978891350] [2022-07-22 17:35:15,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:35:15,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 17:35:15,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:35:15,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 17:35:15,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:35:15,637 INFO L87 Difference]: Start difference. First operand 195831 states and 330687 transitions. Second operand has 14 states, 14 states have (on average 6.5) internal successors, (91), 8 states have internal predecessors, (91), 5 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13)