./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec8_product16.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_product16.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 8a7679b9688c44fd84543e8b684d34e72b379518d806d27199a245477e871776 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 17:19:02,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 17:19:02,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 17:19:02,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 17:19:02,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 17:19:02,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 17:19:02,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 17:19:02,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 17:19:02,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 17:19:02,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 17:19:02,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 17:19:02,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 17:19:02,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 17:19:02,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 17:19:02,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 17:19:02,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 17:19:02,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 17:19:02,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 17:19:02,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 17:19:02,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 17:19:02,616 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 17:19:02,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 17:19:02,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 17:19:02,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 17:19:02,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 17:19:02,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 17:19:02,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 17:19:02,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 17:19:02,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 17:19:02,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 17:19:02,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 17:19:02,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 17:19:02,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 17:19:02,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 17:19:02,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 17:19:02,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 17:19:02,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 17:19:02,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 17:19:02,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 17:19:02,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 17:19:02,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 17:19:02,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 17:19:02,642 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 17:19:02,665 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 17:19:02,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 17:19:02,666 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 17:19:02,666 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 17:19:02,666 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 17:19:02,667 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 17:19:02,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 17:19:02,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 17:19:02,667 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 17:19:02,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 17:19:02,668 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 17:19:02,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 17:19:02,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 17:19:02,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 17:19:02,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 17:19:02,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 17:19:02,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 17:19:02,669 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 17:19:02,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 17:19:02,669 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 17:19:02,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 17:19:02,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 17:19:02,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 17:19:02,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 17:19:02,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:19:02,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 17:19:02,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 17:19:02,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 17:19:02,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 17:19:02,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 17:19:02,671 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 17:19:02,672 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 17:19:02,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 17:19:02,672 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a7679b9688c44fd84543e8b684d34e72b379518d806d27199a245477e871776 [2022-07-19 17:19:02,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 17:19:02,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 17:19:02,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 17:19:02,884 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 17:19:02,899 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 17:19:02,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec8_product16.cil.c [2022-07-19 17:19:02,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9b9d2eb5/b138d302edac4ec6b4230d3000b42007/FLAG1c41e881f [2022-07-19 17:19:03,411 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 17:19:03,412 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec8_product16.cil.c [2022-07-19 17:19:03,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9b9d2eb5/b138d302edac4ec6b4230d3000b42007/FLAG1c41e881f [2022-07-19 17:19:03,459 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9b9d2eb5/b138d302edac4ec6b4230d3000b42007 [2022-07-19 17:19:03,461 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 17:19:03,462 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 17:19:03,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 17:19:03,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 17:19:03,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 17:19:03,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:19:03" (1/1) ... [2022-07-19 17:19:03,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@320c2474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:19:03, skipping insertion in model container [2022-07-19 17:19:03,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:19:03" (1/1) ... [2022-07-19 17:19:03,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 17:19:03,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 17:19:03,869 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_product16.cil.c[51682,51695] [2022-07-19 17:19:03,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:19:03,898 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 17:19:03,975 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_product16.cil.c[51682,51695] [2022-07-19 17:19:03,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:19:04,003 INFO L208 MainTranslator]: Completed translation [2022-07-19 17:19:04,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:19:04 WrapperNode [2022-07-19 17:19:04,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 17:19:04,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 17:19:04,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 17:19:04,005 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 17:19:04,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:19:04" (1/1) ... [2022-07-19 17:19:04,028 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:19:04" (1/1) ... [2022-07-19 17:19:04,062 INFO L137 Inliner]: procedures = 126, calls = 201, calls flagged for inlining = 57, calls inlined = 52, statements flattened = 994 [2022-07-19 17:19:04,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 17:19:04,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 17:19:04,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 17:19:04,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 17:19:04,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:19:04" (1/1) ... [2022-07-19 17:19:04,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:19:04" (1/1) ... [2022-07-19 17:19:04,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:19:04" (1/1) ... [2022-07-19 17:19:04,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:19:04" (1/1) ... [2022-07-19 17:19:04,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:19:04" (1/1) ... [2022-07-19 17:19:04,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:19:04" (1/1) ... [2022-07-19 17:19:04,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:19:04" (1/1) ... [2022-07-19 17:19:04,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 17:19:04,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 17:19:04,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 17:19:04,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 17:19:04,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:19:04" (1/1) ... [2022-07-19 17:19:04,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:19:04,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:19:04,159 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) [2022-07-19 17:19:04,166 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 [2022-07-19 17:19:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-07-19 17:19:04,185 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-07-19 17:19:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-07-19 17:19:04,186 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-07-19 17:19:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-19 17:19:04,186 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-19 17:19:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-19 17:19:04,186 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-19 17:19:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-19 17:19:04,186 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-19 17:19:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-07-19 17:19:04,186 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-07-19 17:19:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-19 17:19:04,186 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-19 17:19:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-19 17:19:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-19 17:19:04,186 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-19 17:19:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 17:19:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-19 17:19:04,187 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-19 17:19:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-19 17:19:04,187 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-19 17:19:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-19 17:19:04,187 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-19 17:19:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-19 17:19:04,187 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-19 17:19:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-07-19 17:19:04,187 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-07-19 17:19:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-19 17:19:04,187 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-19 17:19:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-07-19 17:19:04,187 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-07-19 17:19:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 17:19:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-19 17:19:04,187 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-19 17:19:04,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 17:19:04,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 17:19:04,328 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 17:19:04,329 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 17:19:04,753 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 17:19:04,764 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 17:19:04,765 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 17:19:04,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:19:04 BoogieIcfgContainer [2022-07-19 17:19:04,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 17:19:04,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 17:19:04,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 17:19:04,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 17:19:04,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 05:19:03" (1/3) ... [2022-07-19 17:19:04,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e042444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:19:04, skipping insertion in model container [2022-07-19 17:19:04,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:19:04" (2/3) ... [2022-07-19 17:19:04,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e042444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:19:04, skipping insertion in model container [2022-07-19 17:19:04,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:19:04" (3/3) ... [2022-07-19 17:19:04,774 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_product16.cil.c [2022-07-19 17:19:04,784 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 17:19:04,785 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 17:19:04,844 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 17:19:04,850 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@1a0a1ab5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1ea2aae9 [2022-07-19 17:19:04,851 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 17:19:04,860 INFO L276 IsEmpty]: Start isEmpty. Operand has 299 states, 236 states have (on average 1.5338983050847457) internal successors, (362), 240 states have internal predecessors, (362), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-07-19 17:19:04,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-19 17:19:04,881 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:19:04,882 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] [2022-07-19 17:19:04,882 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:19:04,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:19:04,886 INFO L85 PathProgramCache]: Analyzing trace with hash -806898450, now seen corresponding path program 1 times [2022-07-19 17:19:04,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:19:04,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220186408] [2022-07-19 17:19:04,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:19:04,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:19:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:05,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:19:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:05,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:19:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:05,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:19:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:05,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 17:19:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:05,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 17:19:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:05,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 17:19:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:05,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 17:19:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:05,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 17:19:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:05,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 17:19:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:05,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 17:19:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:05,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 17:19:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:05,292 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-19 17:19:05,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:19:05,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220186408] [2022-07-19 17:19:05,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220186408] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:19:05,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982873554] [2022-07-19 17:19:05,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:19:05,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:19:05,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:19:05,304 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) [2022-07-19 17:19:05,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 17:19:05,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:05,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 17:19:05,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:19:05,580 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 17:19:05,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:19:05,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982873554] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:19:05,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:19:05,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-07-19 17:19:05,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601039301] [2022-07-19 17:19:05,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:19:05,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 17:19:05,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:19:05,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 17:19:05,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:19:05,606 INFO L87 Difference]: Start difference. First operand has 299 states, 236 states have (on average 1.5338983050847457) internal successors, (362), 240 states have internal predecessors, (362), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:19:05,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:19:05,650 INFO L93 Difference]: Finished difference Result 444 states and 658 transitions. [2022-07-19 17:19:05,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 17:19:05,651 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 89 [2022-07-19 17:19:05,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:19:05,660 INFO L225 Difference]: With dead ends: 444 [2022-07-19 17:19:05,660 INFO L226 Difference]: Without dead ends: 292 [2022-07-19 17:19:05,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:19:05,668 INFO L413 NwaCegarLoop]: 448 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, 448 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 [2022-07-19 17:19:05,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:19:05,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-07-19 17:19:05,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2022-07-19 17:19:05,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 230 states have (on average 1.5260869565217392) internal successors, (351), 233 states have internal predecessors, (351), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-07-19 17:19:05,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 440 transitions. [2022-07-19 17:19:05,714 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 440 transitions. Word has length 89 [2022-07-19 17:19:05,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:19:05,715 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 440 transitions. [2022-07-19 17:19:05,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:19:05,715 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 440 transitions. [2022-07-19 17:19:05,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 17:19:05,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:19:05,718 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] [2022-07-19 17:19:05,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 17:19:05,936 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 [2022-07-19 17:19:05,936 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:19:05,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:19:05,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1177822227, now seen corresponding path program 1 times [2022-07-19 17:19:05,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:19:05,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984698547] [2022-07-19 17:19:05,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:19:05,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:19:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:06,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:19:06,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:06,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:19:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:06,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:19:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:06,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 17:19:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:06,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 17:19:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:06,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 17:19:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:06,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 17:19:06,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:06,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:19:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:06,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 17:19:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:06,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 17:19:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:06,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 17:19:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:06,131 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-19 17:19:06,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:19:06,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984698547] [2022-07-19 17:19:06,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984698547] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:19:06,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567066584] [2022-07-19 17:19:06,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:19:06,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:19:06,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:19:06,135 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) [2022-07-19 17:19:06,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 17:19:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:06,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 17:19:06,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:19:06,418 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 17:19:06,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:19:06,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567066584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:19:06,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:19:06,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-19 17:19:06,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266421119] [2022-07-19 17:19:06,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:19:06,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:19:06,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:19:06,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:19:06,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:19:06,423 INFO L87 Difference]: Start difference. First operand 292 states and 440 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:19:06,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:19:06,458 INFO L93 Difference]: Finished difference Result 434 states and 639 transitions. [2022-07-19 17:19:06,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:19:06,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 90 [2022-07-19 17:19:06,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:19:06,461 INFO L225 Difference]: With dead ends: 434 [2022-07-19 17:19:06,465 INFO L226 Difference]: Without dead ends: 295 [2022-07-19 17:19:06,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:19:06,471 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 1 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 874 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 [2022-07-19 17:19:06,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 874 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:19:06,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-07-19 17:19:06,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 294. [2022-07-19 17:19:06,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 232 states have (on average 1.521551724137931) internal successors, (353), 235 states have internal predecessors, (353), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-07-19 17:19:06,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 442 transitions. [2022-07-19 17:19:06,492 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 442 transitions. Word has length 90 [2022-07-19 17:19:06,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:19:06,494 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 442 transitions. [2022-07-19 17:19:06,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:19:06,494 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 442 transitions. [2022-07-19 17:19:06,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-19 17:19:06,498 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:19:06,498 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] [2022-07-19 17:19:06,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 17:19:06,703 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 [2022-07-19 17:19:06,704 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:19:06,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:19:06,704 INFO L85 PathProgramCache]: Analyzing trace with hash 213599068, now seen corresponding path program 1 times [2022-07-19 17:19:06,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:19:06,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329970554] [2022-07-19 17:19:06,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:19:06,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:19:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:06,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:19:06,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:06,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:19:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:06,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:19:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:06,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 17:19:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:06,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 17:19:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:06,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 17:19:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:06,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 17:19:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:06,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 17:19:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:06,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 17:19:06,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:06,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 17:19:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:06,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 17:19:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:06,868 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 17:19:06,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:19:06,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329970554] [2022-07-19 17:19:06,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329970554] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:19:06,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930306633] [2022-07-19 17:19:06,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:19:06,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:19:06,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:19:06,876 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) [2022-07-19 17:19:06,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 17:19:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:07,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 17:19:07,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:19:07,103 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 17:19:07,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:19:07,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930306633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:19:07,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:19:07,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-19 17:19:07,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223781228] [2022-07-19 17:19:07,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:19:07,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:19:07,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:19:07,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:19:07,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:19:07,106 INFO L87 Difference]: Start difference. First operand 294 states and 442 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:19:07,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:19:07,132 INFO L93 Difference]: Finished difference Result 618 states and 943 transitions. [2022-07-19 17:19:07,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:19:07,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 96 [2022-07-19 17:19:07,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:19:07,136 INFO L225 Difference]: With dead ends: 618 [2022-07-19 17:19:07,136 INFO L226 Difference]: Without dead ends: 351 [2022-07-19 17:19:07,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:19:07,140 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 107 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 858 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 [2022-07-19 17:19:07,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 858 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:19:07,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-07-19 17:19:07,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 343. [2022-07-19 17:19:07,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 270 states have (on average 1.537037037037037) internal successors, (415), 273 states have internal predecessors, (415), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-07-19 17:19:07,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 526 transitions. [2022-07-19 17:19:07,177 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 526 transitions. Word has length 96 [2022-07-19 17:19:07,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:19:07,177 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 526 transitions. [2022-07-19 17:19:07,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:19:07,178 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 526 transitions. [2022-07-19 17:19:07,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-19 17:19:07,179 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:19:07,179 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] [2022-07-19 17:19:07,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 17:19:07,394 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 [2022-07-19 17:19:07,394 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:19:07,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:19:07,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1191934709, now seen corresponding path program 1 times [2022-07-19 17:19:07,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:19:07,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663712985] [2022-07-19 17:19:07,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:19:07,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:19:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:07,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:19:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:07,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:19:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:07,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:19:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:07,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 17:19:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:07,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 17:19:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:07,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 17:19:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:07,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 17:19:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:07,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 17:19:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:07,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 17:19:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:07,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 17:19:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:07,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 17:19:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:07,519 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 17:19:07,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:19:07,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663712985] [2022-07-19 17:19:07,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663712985] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:19:07,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994606561] [2022-07-19 17:19:07,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:19:07,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:19:07,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:19:07,521 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) [2022-07-19 17:19:07,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 17:19:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:07,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 17:19:07,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:19:07,760 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 17:19:07,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:19:07,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994606561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:19:07,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:19:07,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-07-19 17:19:07,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198603385] [2022-07-19 17:19:07,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:19:07,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:19:07,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:19:07,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:19:07,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-19 17:19:07,770 INFO L87 Difference]: Start difference. First operand 343 states and 526 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 17:19:07,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:19:07,825 INFO L93 Difference]: Finished difference Result 677 states and 1042 transitions. [2022-07-19 17:19:07,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 17:19:07,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2022-07-19 17:19:07,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:19:07,828 INFO L225 Difference]: With dead ends: 677 [2022-07-19 17:19:07,828 INFO L226 Difference]: Without dead ends: 345 [2022-07-19 17:19:07,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:19:07,831 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 125 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1579 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 [2022-07-19 17:19:07,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1579 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:19:07,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-07-19 17:19:07,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2022-07-19 17:19:07,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 271 states have (on average 1.5350553505535056) internal successors, (416), 275 states have internal predecessors, (416), 56 states have call successors, (56), 16 states have call predecessors, (56), 17 states have return successors, (57), 55 states have call predecessors, (57), 55 states have call successors, (57) [2022-07-19 17:19:07,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 529 transitions. [2022-07-19 17:19:07,850 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 529 transitions. Word has length 97 [2022-07-19 17:19:07,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:19:07,851 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 529 transitions. [2022-07-19 17:19:07,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 17:19:07,853 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 529 transitions. [2022-07-19 17:19:07,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-19 17:19:07,854 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:19:07,855 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] [2022-07-19 17:19:07,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 17:19:08,067 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 [2022-07-19 17:19:08,067 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:19:08,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:19:08,068 INFO L85 PathProgramCache]: Analyzing trace with hash -398998019, now seen corresponding path program 1 times [2022-07-19 17:19:08,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:19:08,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335402174] [2022-07-19 17:19:08,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:19:08,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:19:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:08,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:19:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:08,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:19:08,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:08,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:19:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:08,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:19:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:08,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 17:19:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:08,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 17:19:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:08,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 17:19:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:08,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 17:19:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:08,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 17:19:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:08,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 17:19:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:08,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 17:19:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:08,198 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 17:19:08,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:19:08,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335402174] [2022-07-19 17:19:08,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335402174] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:19:08,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7536944] [2022-07-19 17:19:08,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:19:08,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:19:08,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:19:08,199 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) [2022-07-19 17:19:08,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 17:19:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:08,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 17:19:08,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:19:08,429 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 17:19:08,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:19:08,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7536944] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:19:08,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:19:08,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-19 17:19:08,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279194683] [2022-07-19 17:19:08,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:19:08,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:19:08,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:19:08,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:19:08,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-19 17:19:08,431 INFO L87 Difference]: Start difference. First operand 345 states and 529 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 17:19:08,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:19:08,474 INFO L93 Difference]: Finished difference Result 679 states and 1047 transitions. [2022-07-19 17:19:08,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 17:19:08,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 98 [2022-07-19 17:19:08,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:19:08,477 INFO L225 Difference]: With dead ends: 679 [2022-07-19 17:19:08,477 INFO L226 Difference]: Without dead ends: 347 [2022-07-19 17:19:08,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:19:08,479 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 124 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1568 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 [2022-07-19 17:19:08,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1568 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:19:08,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-07-19 17:19:08,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2022-07-19 17:19:08,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 272 states have (on average 1.5330882352941178) internal successors, (417), 277 states have internal predecessors, (417), 56 states have call successors, (56), 16 states have call predecessors, (56), 18 states have return successors, (62), 55 states have call predecessors, (62), 55 states have call successors, (62) [2022-07-19 17:19:08,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 535 transitions. [2022-07-19 17:19:08,490 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 535 transitions. Word has length 98 [2022-07-19 17:19:08,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:19:08,490 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 535 transitions. [2022-07-19 17:19:08,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 17:19:08,491 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 535 transitions. [2022-07-19 17:19:08,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-19 17:19:08,492 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:19:08,492 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] [2022-07-19 17:19:08,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 17:19:08,710 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 [2022-07-19 17:19:08,710 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:19:08,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:19:08,711 INFO L85 PathProgramCache]: Analyzing trace with hash 262721501, now seen corresponding path program 1 times [2022-07-19 17:19:08,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:19:08,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524652350] [2022-07-19 17:19:08,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:19:08,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:19:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:08,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:19:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:08,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:19:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:08,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:19:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:08,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:19:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:08,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:19:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:08,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 17:19:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:08,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 17:19:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:08,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 17:19:08,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:08,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 17:19:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:08,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 17:19:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:08,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 17:19:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:08,789 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 17:19:08,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:19:08,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524652350] [2022-07-19 17:19:08,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524652350] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:19:08,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:19:08,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 17:19:08,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481084696] [2022-07-19 17:19:08,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:19:08,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:19:08,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:19:08,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:19:08,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:19:08,790 INFO L87 Difference]: Start difference. First operand 347 states and 535 transitions. Second operand has 9 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 17:19:10,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:19:10,054 INFO L93 Difference]: Finished difference Result 819 states and 1261 transitions. [2022-07-19 17:19:10,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 17:19:10,055 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 99 [2022-07-19 17:19:10,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:19:10,057 INFO L225 Difference]: With dead ends: 819 [2022-07-19 17:19:10,057 INFO L226 Difference]: Without dead ends: 495 [2022-07-19 17:19:10,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 17:19:10,059 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 1023 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1897 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 2258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 1897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:19:10,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1040 Valid, 1371 Invalid, 2258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 1897 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 17:19:10,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-07-19 17:19:10,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 347. [2022-07-19 17:19:10,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 272 states have (on average 1.5330882352941178) internal successors, (417), 277 states have internal predecessors, (417), 56 states have call successors, (56), 16 states have call predecessors, (56), 18 states have return successors, (61), 55 states have call predecessors, (61), 55 states have call successors, (61) [2022-07-19 17:19:10,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 534 transitions. [2022-07-19 17:19:10,079 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 534 transitions. Word has length 99 [2022-07-19 17:19:10,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:19:10,080 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 534 transitions. [2022-07-19 17:19:10,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 17:19:10,080 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 534 transitions. [2022-07-19 17:19:10,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-19 17:19:10,081 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:19:10,081 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] [2022-07-19 17:19:10,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 17:19:10,081 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:19:10,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:19:10,082 INFO L85 PathProgramCache]: Analyzing trace with hash 963094467, now seen corresponding path program 2 times [2022-07-19 17:19:10,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:19:10,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529331385] [2022-07-19 17:19:10,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:19:10,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:19:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:10,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:19:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:10,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:19:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:10,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:19:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:10,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:19:10,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:10,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:19:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:10,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:19:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:10,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 17:19:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:10,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 17:19:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:10,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 17:19:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:10,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 17:19:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:10,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 17:19:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:10,158 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 17:19:10,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:19:10,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529331385] [2022-07-19 17:19:10,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529331385] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:19:10,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:19:10,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 17:19:10,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004636245] [2022-07-19 17:19:10,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:19:10,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:19:10,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:19:10,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:19:10,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:19:10,159 INFO L87 Difference]: Start difference. First operand 347 states and 534 transitions. Second operand has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 17:19:11,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:19:11,386 INFO L93 Difference]: Finished difference Result 821 states and 1264 transitions. [2022-07-19 17:19:11,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 17:19:11,387 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 100 [2022-07-19 17:19:11,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:19:11,389 INFO L225 Difference]: With dead ends: 821 [2022-07-19 17:19:11,389 INFO L226 Difference]: Without dead ends: 497 [2022-07-19 17:19:11,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 17:19:11,391 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 1018 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1897 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 2267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 1897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:19:11,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 1372 Invalid, 2267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 1897 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 17:19:11,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-07-19 17:19:11,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 349. [2022-07-19 17:19:11,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 273 states have (on average 1.531135531135531) internal successors, (418), 279 states have internal predecessors, (418), 56 states have call successors, (56), 16 states have call predecessors, (56), 19 states have return successors, (63), 55 states have call predecessors, (63), 55 states have call successors, (63) [2022-07-19 17:19:11,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 537 transitions. [2022-07-19 17:19:11,409 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 537 transitions. Word has length 100 [2022-07-19 17:19:11,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:19:11,409 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 537 transitions. [2022-07-19 17:19:11,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 17:19:11,409 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 537 transitions. [2022-07-19 17:19:11,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 17:19:11,410 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:19:11,410 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] [2022-07-19 17:19:11,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 17:19:11,410 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:19:11,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:19:11,411 INFO L85 PathProgramCache]: Analyzing trace with hash -868146014, now seen corresponding path program 1 times [2022-07-19 17:19:11,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:19:11,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149010211] [2022-07-19 17:19:11,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:19:11,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:19:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:11,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:19:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:11,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:19:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:11,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:19:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:11,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:19:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:11,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:19:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:11,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:19:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:11,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 17:19:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:11,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 17:19:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:11,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 17:19:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:11,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 17:19:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:11,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 17:19:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:11,496 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 17:19:11,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:19:11,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149010211] [2022-07-19 17:19:11,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149010211] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:19:11,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:19:11,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 17:19:11,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851010941] [2022-07-19 17:19:11,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:19:11,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 17:19:11,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:19:11,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 17:19:11,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-19 17:19:11,497 INFO L87 Difference]: Start difference. First operand 349 states and 537 transitions. Second operand has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-19 17:19:13,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:19:13,261 INFO L93 Difference]: Finished difference Result 819 states and 1259 transitions. [2022-07-19 17:19:13,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:19:13,262 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 101 [2022-07-19 17:19:13,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:19:13,264 INFO L225 Difference]: With dead ends: 819 [2022-07-19 17:19:13,264 INFO L226 Difference]: Without dead ends: 497 [2022-07-19 17:19:13,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-19 17:19:13,266 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 1130 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3392 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 3809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 3392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 17:19:13,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1130 Valid, 1668 Invalid, 3809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 3392 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 17:19:13,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-07-19 17:19:13,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 349. [2022-07-19 17:19:13,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 273 states have (on average 1.531135531135531) internal successors, (418), 279 states have internal predecessors, (418), 56 states have call successors, (56), 16 states have call predecessors, (56), 19 states have return successors, (62), 55 states have call predecessors, (62), 55 states have call successors, (62) [2022-07-19 17:19:13,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 536 transitions. [2022-07-19 17:19:13,282 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 536 transitions. Word has length 101 [2022-07-19 17:19:13,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:19:13,282 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 536 transitions. [2022-07-19 17:19:13,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-19 17:19:13,283 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 536 transitions. [2022-07-19 17:19:13,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-19 17:19:13,284 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:19:13,284 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] [2022-07-19 17:19:13,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 17:19:13,284 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:19:13,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:19:13,284 INFO L85 PathProgramCache]: Analyzing trace with hash 400437826, now seen corresponding path program 2 times [2022-07-19 17:19:13,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:19:13,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579762245] [2022-07-19 17:19:13,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:19:13,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:19:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:13,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:19:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:13,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:19:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:13,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:19:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:13,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:19:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:13,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:19:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:13,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:19:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:13,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 17:19:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:13,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 17:19:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:13,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 17:19:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:13,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 17:19:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:13,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 17:19:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:13,375 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 17:19:13,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:19:13,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579762245] [2022-07-19 17:19:13,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579762245] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:19:13,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:19:13,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 17:19:13,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596382525] [2022-07-19 17:19:13,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:19:13,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 17:19:13,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:19:13,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 17:19:13,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-19 17:19:13,377 INFO L87 Difference]: Start difference. First operand 349 states and 536 transitions. Second operand has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-19 17:19:15,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:19:15,122 INFO L93 Difference]: Finished difference Result 821 states and 1265 transitions. [2022-07-19 17:19:15,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:19:15,123 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 102 [2022-07-19 17:19:15,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:19:15,126 INFO L225 Difference]: With dead ends: 821 [2022-07-19 17:19:15,126 INFO L226 Difference]: Without dead ends: 499 [2022-07-19 17:19:15,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-19 17:19:15,127 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 1125 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3425 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 3838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 3425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 17:19:15,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 1669 Invalid, 3838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 3425 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 17:19:15,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-07-19 17:19:15,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 351. [2022-07-19 17:19:15,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 274 states have (on average 1.5291970802919708) internal successors, (419), 281 states have internal predecessors, (419), 56 states have call successors, (56), 16 states have call predecessors, (56), 20 states have return successors, (67), 55 states have call predecessors, (67), 55 states have call successors, (67) [2022-07-19 17:19:15,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 542 transitions. [2022-07-19 17:19:15,146 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 542 transitions. Word has length 102 [2022-07-19 17:19:15,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:19:15,147 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 542 transitions. [2022-07-19 17:19:15,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-19 17:19:15,147 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 542 transitions. [2022-07-19 17:19:15,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-19 17:19:15,148 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:19:15,148 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] [2022-07-19 17:19:15,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 17:19:15,148 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:19:15,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:19:15,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1821386649, now seen corresponding path program 1 times [2022-07-19 17:19:15,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:19:15,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650139838] [2022-07-19 17:19:15,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:19:15,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:19:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:15,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:19:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:15,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:19:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:15,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:19:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:15,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:19:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:15,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:19:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:15,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:19:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:15,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 17:19:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:15,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 17:19:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:15,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 17:19:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:15,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 17:19:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:15,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 17:19:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:15,223 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:19:15,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:19:15,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650139838] [2022-07-19 17:19:15,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650139838] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:19:15,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225791834] [2022-07-19 17:19:15,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:19:15,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:19:15,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:19:15,224 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) [2022-07-19 17:19:15,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 17:19:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:15,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 17:19:15,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:19:15,453 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:19:15,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 17:19:15,505 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:19:15,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225791834] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 17:19:15,506 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 17:19:15,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2022-07-19 17:19:15,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244985203] [2022-07-19 17:19:15,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 17:19:15,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 17:19:15,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:19:15,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 17:19:15,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-19 17:19:15,509 INFO L87 Difference]: Start difference. First operand 351 states and 542 transitions. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 17:19:16,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:19:16,729 INFO L93 Difference]: Finished difference Result 990 states and 1593 transitions. [2022-07-19 17:19:16,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 17:19:16,729 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 103 [2022-07-19 17:19:16,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:19:16,734 INFO L225 Difference]: With dead ends: 990 [2022-07-19 17:19:16,734 INFO L226 Difference]: Without dead ends: 851 [2022-07-19 17:19:16,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-07-19 17:19:16,736 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 1529 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 1647 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:19:16,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1574 Valid, 1647 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 17:19:16,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-07-19 17:19:16,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 679. [2022-07-19 17:19:16,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 538 states have (on average 1.5929368029739777) internal successors, (857), 545 states have internal predecessors, (857), 120 states have call successors, (120), 16 states have call predecessors, (120), 20 states have return successors, (141), 119 states have call predecessors, (141), 119 states have call successors, (141) [2022-07-19 17:19:16,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1118 transitions. [2022-07-19 17:19:16,767 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1118 transitions. Word has length 103 [2022-07-19 17:19:16,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:19:16,768 INFO L495 AbstractCegarLoop]: Abstraction has 679 states and 1118 transitions. [2022-07-19 17:19:16,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 17:19:16,768 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1118 transitions. [2022-07-19 17:19:16,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-19 17:19:16,771 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:19:16,771 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] [2022-07-19 17:19:16,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 17:19:16,988 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 [2022-07-19 17:19:16,989 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:19:16,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:19:16,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1014946556, now seen corresponding path program 1 times [2022-07-19 17:19:16,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:19:16,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311647831] [2022-07-19 17:19:16,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:19:16,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:19:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:17,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:19:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:17,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:19:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:17,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:19:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:17,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:19:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:17,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:19:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:17,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:19:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:17,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 17:19:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:17,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 17:19:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:17,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 17:19:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:17,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 17:19:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:17,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 17:19:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:17,072 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:19:17,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:19:17,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311647831] [2022-07-19 17:19:17,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311647831] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:19:17,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:19:17,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:19:17,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10815263] [2022-07-19 17:19:17,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:19:17,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:19:17,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:19:17,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:19:17,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:19:17,074 INFO L87 Difference]: Start difference. First operand 679 states and 1118 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:19:18,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:19:18,068 INFO L93 Difference]: Finished difference Result 1771 states and 2964 transitions. [2022-07-19 17:19:18,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:19:18,069 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2022-07-19 17:19:18,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:19:18,082 INFO L225 Difference]: With dead ends: 1771 [2022-07-19 17:19:18,082 INFO L226 Difference]: Without dead ends: 1160 [2022-07-19 17:19:18,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:19:18,085 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 1014 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 17:19:18,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 1240 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 17:19:18,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-07-19 17:19:18,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1004. [2022-07-19 17:19:18,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 799 states have (on average 1.6045056320400501) internal successors, (1282), 806 states have internal predecessors, (1282), 184 states have call successors, (184), 16 states have call predecessors, (184), 20 states have return successors, (215), 183 states have call predecessors, (215), 183 states have call successors, (215) [2022-07-19 17:19:18,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1681 transitions. [2022-07-19 17:19:18,130 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1681 transitions. Word has length 109 [2022-07-19 17:19:18,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:19:18,131 INFO L495 AbstractCegarLoop]: Abstraction has 1004 states and 1681 transitions. [2022-07-19 17:19:18,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:19:18,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1681 transitions. [2022-07-19 17:19:18,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-19 17:19:18,134 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:19:18,134 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] [2022-07-19 17:19:18,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 17:19:18,135 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:19:18,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:19:18,135 INFO L85 PathProgramCache]: Analyzing trace with hash 2033055594, now seen corresponding path program 1 times [2022-07-19 17:19:18,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:19:18,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868107184] [2022-07-19 17:19:18,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:19:18,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:19:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:18,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:19:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:18,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:19:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:18,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:19:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:18,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:19:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:18,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:19:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:18,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:19:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:18,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 17:19:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:18,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 17:19:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:18,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 17:19:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:18,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 17:19:18,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:18,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 17:19:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:19:18,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:19:18,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868107184] [2022-07-19 17:19:18,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868107184] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:19:18,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:19:18,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:19:18,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152577211] [2022-07-19 17:19:18,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:19:18,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:19:18,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:19:18,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:19:18,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:19:18,202 INFO L87 Difference]: Start difference. First operand 1004 states and 1681 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:19:19,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:19:19,240 INFO L93 Difference]: Finished difference Result 2551 states and 4313 transitions. [2022-07-19 17:19:19,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:19:19,242 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2022-07-19 17:19:19,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:19:19,250 INFO L225 Difference]: With dead ends: 2551 [2022-07-19 17:19:19,250 INFO L226 Difference]: Without dead ends: 1668 [2022-07-19 17:19:19,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:19:19,253 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 1012 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 17:19:19,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1027 Valid, 1255 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 17:19:19,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2022-07-19 17:19:19,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1512. [2022-07-19 17:19:19,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1212 states have (on average 1.6113861386138615) internal successors, (1953), 1219 states have internal predecessors, (1953), 279 states have call successors, (279), 16 states have call predecessors, (279), 20 states have return successors, (310), 278 states have call predecessors, (310), 278 states have call successors, (310) [2022-07-19 17:19:19,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 2542 transitions. [2022-07-19 17:19:19,351 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 2542 transitions. Word has length 110 [2022-07-19 17:19:19,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:19:19,351 INFO L495 AbstractCegarLoop]: Abstraction has 1512 states and 2542 transitions. [2022-07-19 17:19:19,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:19:19,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 2542 transitions. [2022-07-19 17:19:19,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-19 17:19:19,356 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:19:19,356 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] [2022-07-19 17:19:19,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 17:19:19,357 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:19:19,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:19:19,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1439293862, now seen corresponding path program 1 times [2022-07-19 17:19:19,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:19:19,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671192897] [2022-07-19 17:19:19,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:19:19,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:19:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:19,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:19:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:19,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:19:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:19,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:19:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:19,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:19:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:19,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:19:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:19,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:19:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:19,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 17:19:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:19,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 17:19:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:19,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 17:19:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:19,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 17:19:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:19,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 17:19:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:19,416 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:19:19,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:19:19,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671192897] [2022-07-19 17:19:19,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671192897] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:19:19,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:19:19,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:19:19,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956936896] [2022-07-19 17:19:19,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:19:19,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:19:19,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:19:19,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:19:19,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:19:19,419 INFO L87 Difference]: Start difference. First operand 1512 states and 2542 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:19:20,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:19:20,365 INFO L93 Difference]: Finished difference Result 3703 states and 6322 transitions. [2022-07-19 17:19:20,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:19:20,365 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2022-07-19 17:19:20,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:19:20,375 INFO L225 Difference]: With dead ends: 3703 [2022-07-19 17:19:20,375 INFO L226 Difference]: Without dead ends: 2437 [2022-07-19 17:19:20,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:19:20,379 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 1010 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:19:20,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 1216 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 17:19:20,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2022-07-19 17:19:20,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 2281. [2022-07-19 17:19:20,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2281 states, 1858 states have (on average 1.6167922497308935) internal successors, (3004), 1865 states have internal predecessors, (3004), 402 states have call successors, (402), 16 states have call predecessors, (402), 20 states have return successors, (449), 401 states have call predecessors, (449), 401 states have call successors, (449) [2022-07-19 17:19:20,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 3855 transitions. [2022-07-19 17:19:20,462 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 3855 transitions. Word has length 111 [2022-07-19 17:19:20,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:19:20,462 INFO L495 AbstractCegarLoop]: Abstraction has 2281 states and 3855 transitions. [2022-07-19 17:19:20,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:19:20,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 3855 transitions. [2022-07-19 17:19:20,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-19 17:19:20,468 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:19:20,469 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] [2022-07-19 17:19:20,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 17:19:20,469 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:19:20,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:19:20,469 INFO L85 PathProgramCache]: Analyzing trace with hash -497333621, now seen corresponding path program 1 times [2022-07-19 17:19:20,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:19:20,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962324379] [2022-07-19 17:19:20,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:19:20,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:19:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:20,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:19:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:20,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:19:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:20,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:19:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:20,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:19:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:20,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:19:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:20,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:19:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:20,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 17:19:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:20,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 17:19:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:20,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 17:19:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:20,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 17:19:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:20,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 17:19:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:20,537 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:19:20,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:19:20,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962324379] [2022-07-19 17:19:20,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962324379] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:19:20,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:19:20,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:19:20,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562601684] [2022-07-19 17:19:20,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:19:20,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:19:20,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:19:20,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:19:20,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:19:20,539 INFO L87 Difference]: Start difference. First operand 2281 states and 3855 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:19:21,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:19:21,550 INFO L93 Difference]: Finished difference Result 5497 states and 9456 transitions. [2022-07-19 17:19:21,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:19:21,551 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2022-07-19 17:19:21,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:19:21,565 INFO L225 Difference]: With dead ends: 5497 [2022-07-19 17:19:21,565 INFO L226 Difference]: Without dead ends: 3666 [2022-07-19 17:19:21,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:19:21,570 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 1008 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:19:21,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 1218 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 17:19:21,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3666 states. [2022-07-19 17:19:21,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3666 to 3510. [2022-07-19 17:19:21,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3510 states, 2908 states have (on average 1.6200137551581844) internal successors, (4711), 2915 states have internal predecessors, (4711), 581 states have call successors, (581), 16 states have call predecessors, (581), 20 states have return successors, (654), 580 states have call predecessors, (654), 580 states have call successors, (654) [2022-07-19 17:19:21,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 5946 transitions. [2022-07-19 17:19:21,700 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 5946 transitions. Word has length 112 [2022-07-19 17:19:21,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:19:21,700 INFO L495 AbstractCegarLoop]: Abstraction has 3510 states and 5946 transitions. [2022-07-19 17:19:21,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:19:21,701 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 5946 transitions. [2022-07-19 17:19:21,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-19 17:19:21,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:19:21,708 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] [2022-07-19 17:19:21,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 17:19:21,708 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:19:21,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:19:21,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1467419038, now seen corresponding path program 1 times [2022-07-19 17:19:21,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:19:21,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570651512] [2022-07-19 17:19:21,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:19:21,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:19:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:21,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:19:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:21,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:19:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:21,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:19:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:21,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:19:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:21,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:19:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:21,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:19:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:21,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 17:19:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:21,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 17:19:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:21,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 17:19:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:21,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 17:19:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:21,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 17:19:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:21,795 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:19:21,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:19:21,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570651512] [2022-07-19 17:19:21,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570651512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:19:21,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:19:21,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:19:21,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734272060] [2022-07-19 17:19:21,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:19:21,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:19:21,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:19:21,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:19:21,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:19:21,797 INFO L87 Difference]: Start difference. First operand 3510 states and 5946 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:19:22,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:19:22,841 INFO L93 Difference]: Finished difference Result 8445 states and 14603 transitions. [2022-07-19 17:19:22,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:19:22,841 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 113 [2022-07-19 17:19:22,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:19:22,863 INFO L225 Difference]: With dead ends: 8445 [2022-07-19 17:19:22,863 INFO L226 Difference]: Without dead ends: 5697 [2022-07-19 17:19:22,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:19:22,878 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 1006 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:19:22,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 1220 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 17:19:22,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5697 states. [2022-07-19 17:19:23,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5697 to 5541. [2022-07-19 17:19:23,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5541 states, 4563 states have (on average 1.613631382862152) internal successors, (7363), 4570 states have internal predecessors, (7363), 957 states have call successors, (957), 16 states have call predecessors, (957), 20 states have return successors, (1074), 956 states have call predecessors, (1074), 956 states have call successors, (1074) [2022-07-19 17:19:23,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5541 states to 5541 states and 9394 transitions. [2022-07-19 17:19:23,151 INFO L78 Accepts]: Start accepts. Automaton has 5541 states and 9394 transitions. Word has length 113 [2022-07-19 17:19:23,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:19:23,152 INFO L495 AbstractCegarLoop]: Abstraction has 5541 states and 9394 transitions. [2022-07-19 17:19:23,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:19:23,152 INFO L276 IsEmpty]: Start isEmpty. Operand 5541 states and 9394 transitions. [2022-07-19 17:19:23,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-19 17:19:23,162 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:19:23,162 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] [2022-07-19 17:19:23,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 17:19:23,162 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:19:23,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:19:23,163 INFO L85 PathProgramCache]: Analyzing trace with hash -678340145, now seen corresponding path program 1 times [2022-07-19 17:19:23,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:19:23,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400082972] [2022-07-19 17:19:23,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:19:23,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:19:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:23,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:19:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:23,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:19:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:23,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:19:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:23,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:19:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:23,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:19:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:23,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:19:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:23,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 17:19:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:23,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 17:19:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:23,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 17:19:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:23,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 17:19:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:23,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 17:19:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:23,231 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:19:23,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:19:23,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400082972] [2022-07-19 17:19:23,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400082972] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:19:23,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:19:23,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:19:23,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338636529] [2022-07-19 17:19:23,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:19:23,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:19:23,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:19:23,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:19:23,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:19:23,233 INFO L87 Difference]: Start difference. First operand 5541 states and 9394 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:19:24,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:19:24,500 INFO L93 Difference]: Finished difference Result 13782 states and 23824 transitions. [2022-07-19 17:19:24,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:19:24,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 114 [2022-07-19 17:19:24,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:19:24,536 INFO L225 Difference]: With dead ends: 13782 [2022-07-19 17:19:24,536 INFO L226 Difference]: Without dead ends: 9380 [2022-07-19 17:19:24,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:19:24,548 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 1004 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 17:19:24,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1019 Valid, 1219 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 17:19:24,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9380 states. [2022-07-19 17:19:24,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9380 to 9224. [2022-07-19 17:19:24,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9224 states, 7640 states have (on average 1.6111256544502617) internal successors, (12309), 7647 states have internal predecessors, (12309), 1563 states have call successors, (1563), 16 states have call predecessors, (1563), 20 states have return successors, (1758), 1562 states have call predecessors, (1758), 1562 states have call successors, (1758) [2022-07-19 17:19:24,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9224 states to 9224 states and 15630 transitions. [2022-07-19 17:19:24,964 INFO L78 Accepts]: Start accepts. Automaton has 9224 states and 15630 transitions. Word has length 114 [2022-07-19 17:19:24,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:19:24,964 INFO L495 AbstractCegarLoop]: Abstraction has 9224 states and 15630 transitions. [2022-07-19 17:19:24,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:19:24,965 INFO L276 IsEmpty]: Start isEmpty. Operand 9224 states and 15630 transitions. [2022-07-19 17:19:24,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-19 17:19:24,976 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:19:24,977 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] [2022-07-19 17:19:24,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 17:19:24,977 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:19:24,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:19:24,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1860754352, now seen corresponding path program 1 times [2022-07-19 17:19:24,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:19:24,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913163908] [2022-07-19 17:19:24,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:19:24,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:19:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:25,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:19:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:25,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:19:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:25,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:19:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:25,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:19:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:25,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:19:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:25,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:19:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:25,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 17:19:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:25,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 17:19:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:25,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 17:19:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:25,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 17:19:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:25,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-19 17:19:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:25,049 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:19:25,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:19:25,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913163908] [2022-07-19 17:19:25,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913163908] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:19:25,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:19:25,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:19:25,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454122118] [2022-07-19 17:19:25,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:19:25,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:19:25,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:19:25,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:19:25,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:19:25,051 INFO L87 Difference]: Start difference. First operand 9224 states and 15630 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:19:26,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:19:26,362 INFO L93 Difference]: Finished difference Result 23966 states and 41370 transitions. [2022-07-19 17:19:26,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:19:26,362 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 115 [2022-07-19 17:19:26,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:19:26,416 INFO L225 Difference]: With dead ends: 23966 [2022-07-19 17:19:26,416 INFO L226 Difference]: Without dead ends: 16333 [2022-07-19 17:19:26,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:19:26,438 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 1002 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:19:26,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 1265 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 17:19:26,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16333 states. [2022-07-19 17:19:27,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16333 to 16177. [2022-07-19 17:19:27,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16177 states, 13390 states have (on average 1.6020164301717699) internal successors, (21451), 13397 states have internal predecessors, (21451), 2766 states have call successors, (2766), 16 states have call predecessors, (2766), 20 states have return successors, (3105), 2765 states have call predecessors, (3105), 2765 states have call successors, (3105) [2022-07-19 17:19:27,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16177 states to 16177 states and 27322 transitions. [2022-07-19 17:19:27,157 INFO L78 Accepts]: Start accepts. Automaton has 16177 states and 27322 transitions. Word has length 115 [2022-07-19 17:19:27,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:19:27,157 INFO L495 AbstractCegarLoop]: Abstraction has 16177 states and 27322 transitions. [2022-07-19 17:19:27,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:19:27,157 INFO L276 IsEmpty]: Start isEmpty. Operand 16177 states and 27322 transitions. [2022-07-19 17:19:27,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-19 17:19:27,172 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:19:27,172 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] [2022-07-19 17:19:27,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 17:19:27,172 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:19:27,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:19:27,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1941197296, now seen corresponding path program 1 times [2022-07-19 17:19:27,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:19:27,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322952879] [2022-07-19 17:19:27,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:19:27,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:19:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:27,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:19:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:27,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:19:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:27,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:19:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:27,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:19:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:27,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:19:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:27,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:19:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:27,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 17:19:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:27,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 17:19:27,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:27,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 17:19:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:27,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 17:19:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:27,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 17:19:27,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:27,313 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:19:27,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:19:27,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322952879] [2022-07-19 17:19:27,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322952879] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:19:27,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:19:27,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:19:27,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281134941] [2022-07-19 17:19:27,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:19:27,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:19:27,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:19:27,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:19:27,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:19:27,315 INFO L87 Difference]: Start difference. First operand 16177 states and 27322 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:19:29,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:19:29,018 INFO L93 Difference]: Finished difference Result 42932 states and 73969 transitions. [2022-07-19 17:19:29,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:19:29,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 116 [2022-07-19 17:19:29,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:19:29,111 INFO L225 Difference]: With dead ends: 42932 [2022-07-19 17:19:29,111 INFO L226 Difference]: Without dead ends: 28988 [2022-07-19 17:19:29,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:19:29,139 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 1000 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:19:29,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 1221 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 17:19:29,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28988 states. [2022-07-19 17:19:30,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28988 to 28832. [2022-07-19 17:19:30,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28832 states, 24006 states have (on average 1.597725568607848) internal successors, (38355), 24013 states have internal predecessors, (38355), 4805 states have call successors, (4805), 16 states have call predecessors, (4805), 20 states have return successors, (5418), 4804 states have call predecessors, (5418), 4804 states have call successors, (5418) [2022-07-19 17:19:30,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28832 states to 28832 states and 48578 transitions. [2022-07-19 17:19:30,516 INFO L78 Accepts]: Start accepts. Automaton has 28832 states and 48578 transitions. Word has length 116 [2022-07-19 17:19:30,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:19:30,516 INFO L495 AbstractCegarLoop]: Abstraction has 28832 states and 48578 transitions. [2022-07-19 17:19:30,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:19:30,517 INFO L276 IsEmpty]: Start isEmpty. Operand 28832 states and 48578 transitions. [2022-07-19 17:19:30,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-19 17:19:30,534 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:19:30,535 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] [2022-07-19 17:19:30,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 17:19:30,535 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:19:30,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:19:30,535 INFO L85 PathProgramCache]: Analyzing trace with hash -732373582, now seen corresponding path program 1 times [2022-07-19 17:19:30,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:19:30,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427014268] [2022-07-19 17:19:30,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:19:30,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:19:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:30,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:19:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:30,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:19:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:30,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:19:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:30,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:19:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:30,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:19:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:30,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:19:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:30,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 17:19:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:30,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 17:19:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:30,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 17:19:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:30,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 17:19:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:30,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 17:19:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:30,613 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:19:30,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:19:30,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427014268] [2022-07-19 17:19:30,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427014268] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:19:30,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:19:30,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:19:30,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667721602] [2022-07-19 17:19:30,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:19:30,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:19:30,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:19:30,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:19:30,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:19:30,615 INFO L87 Difference]: Start difference. First operand 28832 states and 48578 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, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:19:33,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:19:33,009 INFO L93 Difference]: Finished difference Result 78694 states and 134728 transitions. [2022-07-19 17:19:33,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:19:33,009 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, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 117 [2022-07-19 17:19:33,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:19:33,219 INFO L225 Difference]: With dead ends: 78694 [2022-07-19 17:19:33,219 INFO L226 Difference]: Without dead ends: 52867 [2022-07-19 17:19:33,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:19:33,424 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 998 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:19:33,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 1219 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 17:19:33,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52867 states. [2022-07-19 17:19:35,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52867 to 52711. [2022-07-19 17:19:35,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52711 states, 44170 states have (on average 1.5921213493321258) internal successors, (70324), 44177 states have internal predecessors, (70324), 8520 states have call successors, (8520), 16 states have call predecessors, (8520), 20 states have return successors, (9665), 8519 states have call predecessors, (9665), 8519 states have call successors, (9665) [2022-07-19 17:19:35,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52711 states to 52711 states and 88509 transitions. [2022-07-19 17:19:35,958 INFO L78 Accepts]: Start accepts. Automaton has 52711 states and 88509 transitions. Word has length 117 [2022-07-19 17:19:35,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:19:35,958 INFO L495 AbstractCegarLoop]: Abstraction has 52711 states and 88509 transitions. [2022-07-19 17:19:35,958 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, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:19:35,959 INFO L276 IsEmpty]: Start isEmpty. Operand 52711 states and 88509 transitions. [2022-07-19 17:19:35,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-19 17:19:35,980 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:19:35,980 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] [2022-07-19 17:19:35,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 17:19:35,981 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:19:35,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:19:35,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1116888912, now seen corresponding path program 1 times [2022-07-19 17:19:35,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:19:35,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973821141] [2022-07-19 17:19:35,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:19:35,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:19:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:36,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:19:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:36,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:19:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:36,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:19:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:36,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:19:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:36,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:19:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:36,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:19:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:36,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 17:19:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:36,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 17:19:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:36,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 17:19:36,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:36,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 17:19:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:36,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-19 17:19:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:36,062 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:19:36,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:19:36,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973821141] [2022-07-19 17:19:36,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973821141] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:19:36,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:19:36,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:19:36,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958523368] [2022-07-19 17:19:36,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:19:36,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:19:36,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:19:36,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:19:36,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:19:36,064 INFO L87 Difference]: Start difference. First operand 52711 states and 88509 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, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:19:39,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:19:39,712 INFO L93 Difference]: Finished difference Result 98465 states and 168915 transitions. [2022-07-19 17:19:39,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:19:39,713 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, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 118 [2022-07-19 17:19:39,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:19:40,226 INFO L225 Difference]: With dead ends: 98465 [2022-07-19 17:19:40,226 INFO L226 Difference]: Without dead ends: 98326 [2022-07-19 17:19:40,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:19:40,262 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 996 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:19:40,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 1219 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 17:19:40,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98326 states. [2022-07-19 17:19:43,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98326 to 98170. [2022-07-19 17:19:44,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98170 states, 82830 states have (on average 1.5851020161777134) internal successors, (131294), 82837 states have internal predecessors, (131294), 15319 states have call successors, (15319), 16 states have call predecessors, (15319), 20 states have return successors, (17510), 15318 states have call predecessors, (17510), 15318 states have call successors, (17510) [2022-07-19 17:19:44,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98170 states to 98170 states and 164123 transitions. [2022-07-19 17:19:44,576 INFO L78 Accepts]: Start accepts. Automaton has 98170 states and 164123 transitions. Word has length 118 [2022-07-19 17:19:44,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:19:44,576 INFO L495 AbstractCegarLoop]: Abstraction has 98170 states and 164123 transitions. [2022-07-19 17:19:44,576 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, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:19:44,576 INFO L276 IsEmpty]: Start isEmpty. Operand 98170 states and 164123 transitions. [2022-07-19 17:19:44,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-19 17:19:44,595 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:19:44,596 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] [2022-07-19 17:19:44,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 17:19:44,596 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:19:44,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:19:44,596 INFO L85 PathProgramCache]: Analyzing trace with hash 2090243313, now seen corresponding path program 1 times [2022-07-19 17:19:44,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:19:44,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701934591] [2022-07-19 17:19:44,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:19:44,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:19:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:44,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:19:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:44,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:19:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:44,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:19:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:44,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:19:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:44,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:19:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:44,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:19:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:44,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 17:19:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:44,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 17:19:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:44,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 17:19:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:44,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 17:19:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:44,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 17:19:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:19:44,739 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:19:44,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:19:44,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701934591] [2022-07-19 17:19:44,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701934591] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:19:44,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:19:44,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-19 17:19:44,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81606125] [2022-07-19 17:19:44,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:19:44,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-19 17:19:44,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:19:44,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-19 17:19:44,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:19:44,742 INFO L87 Difference]: Start difference. First operand 98170 states and 164123 transitions. Second operand has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-19 17:19:56,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:19:56,160 INFO L93 Difference]: Finished difference Result 196666 states and 340630 transitions. [2022-07-19 17:19:56,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-19 17:19:56,160 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 119 [2022-07-19 17:19:56,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:19:56,960 INFO L225 Difference]: With dead ends: 196666 [2022-07-19 17:19:56,961 INFO L226 Difference]: Without dead ends: 196533 [2022-07-19 17:19:57,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1277 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=822, Invalid=3600, Unknown=0, NotChecked=0, Total=4422 [2022-07-19 17:19:57,037 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 5082 mSDsluCounter, 2419 mSDsCounter, 0 mSdLazyCounter, 8532 mSolverCounterSat, 2504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5082 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 11036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2504 IncrementalHoareTripleChecker+Valid, 8532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:19:57,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5082 Valid, 3073 Invalid, 11036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2504 Valid, 8532 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-19 17:19:57,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196533 states. [2022-07-19 17:20:05,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196533 to 195512. [2022-07-19 17:20:05,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195512 states, 165032 states have (on average 1.5858984924135926) internal successors, (261724), 164935 states have internal predecessors, (261724), 30430 states have call successors, (30430), 41 states have call predecessors, (30430), 49 states have return successors, (38087), 30541 states have call predecessors, (38087), 30427 states have call successors, (38087) [2022-07-19 17:20:06,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195512 states to 195512 states and 330241 transitions. [2022-07-19 17:20:06,260 INFO L78 Accepts]: Start accepts. Automaton has 195512 states and 330241 transitions. Word has length 119 [2022-07-19 17:20:06,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:20:06,261 INFO L495 AbstractCegarLoop]: Abstraction has 195512 states and 330241 transitions. [2022-07-19 17:20:06,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-19 17:20:06,261 INFO L276 IsEmpty]: Start isEmpty. Operand 195512 states and 330241 transitions. [2022-07-19 17:20:06,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-19 17:20:06,303 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:20:06,303 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] [2022-07-19 17:20:06,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 17:20:06,303 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:20:06,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:20:06,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1622170436, now seen corresponding path program 1 times [2022-07-19 17:20:06,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:20:06,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511483037] [2022-07-19 17:20:06,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:20:06,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:20:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:20:06,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:20:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:20:06,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:20:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:20:06,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:20:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:20:06,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:20:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:20:06,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:20:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:20:06,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:20:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:20:06,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 17:20:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:20:06,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 17:20:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:20:06,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 17:20:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:20:06,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 17:20:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:20:06,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 17:20:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:20:06,409 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:20:06,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:20:06,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511483037] [2022-07-19 17:20:06,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511483037] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:20:06,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:20:06,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 17:20:06,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970657309] [2022-07-19 17:20:06,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:20:06,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 17:20:06,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:20:06,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 17:20:06,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-19 17:20:06,412 INFO L87 Difference]: Start difference. First operand 195512 states and 330241 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11)