./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec6_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec6_product31.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bad89116a36bb46e02a3fc807805b2b6d03550190d8073d361f25c2754b15f25 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 17:30:20,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 17:30:20,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 17:30:20,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 17:30:20,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 17:30:20,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 17:30:20,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 17:30:20,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 17:30:20,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 17:30:20,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 17:30:20,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 17:30:20,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 17:30:20,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 17:30:20,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 17:30:20,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 17:30:20,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 17:30:20,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 17:30:20,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 17:30:20,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 17:30:20,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 17:30:20,595 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 17:30:20,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 17:30:20,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 17:30:20,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 17:30:20,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 17:30:20,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 17:30:20,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 17:30:20,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 17:30:20,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 17:30:20,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 17:30:20,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 17:30:20,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 17:30:20,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 17:30:20,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 17:30:20,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 17:30:20,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 17:30:20,615 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 17:30:20,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 17:30:20,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 17:30:20,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 17:30:20,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 17:30:20,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 17:30:20,618 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 17:30:20,635 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 17:30:20,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 17:30:20,635 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 17:30:20,636 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 17:30:20,636 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 17:30:20,636 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 17:30:20,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 17:30:20,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 17:30:20,637 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 17:30:20,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 17:30:20,638 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 17:30:20,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 17:30:20,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 17:30:20,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 17:30:20,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 17:30:20,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 17:30:20,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 17:30:20,639 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 17:30:20,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 17:30:20,639 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 17:30:20,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 17:30:20,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 17:30:20,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 17:30:20,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 17:30:20,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:30:20,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 17:30:20,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 17:30:20,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 17:30:20,641 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 17:30:20,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 17:30:20,642 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 17:30:20,642 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 17:30:20,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 17:30:20,642 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bad89116a36bb46e02a3fc807805b2b6d03550190d8073d361f25c2754b15f25 [2022-07-22 17:30:20,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 17:30:20,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 17:30:20,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 17:30:20,873 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 17:30:20,873 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 17:30:20,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec6_product31.cil.c [2022-07-22 17:30:20,939 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6732d226/f948e3aa0e67427fa3e1bc5fdd962a1a/FLAG45fca5e77 [2022-07-22 17:30:21,409 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 17:30:21,410 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec6_product31.cil.c [2022-07-22 17:30:21,427 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6732d226/f948e3aa0e67427fa3e1bc5fdd962a1a/FLAG45fca5e77 [2022-07-22 17:30:21,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6732d226/f948e3aa0e67427fa3e1bc5fdd962a1a [2022-07-22 17:30:21,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 17:30:21,710 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 17:30:21,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 17:30:21,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 17:30:21,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 17:30:21,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:30:21" (1/1) ... [2022-07-22 17:30:21,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ecad312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:30:21, skipping insertion in model container [2022-07-22 17:30:21,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:30:21" (1/1) ... [2022-07-22 17:30:21,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 17:30:21,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 17:30:22,182 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_spec6_product31.cil.c[31008,31021] [2022-07-22 17:30:22,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:30:22,336 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 17:30:22,398 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_spec6_product31.cil.c[31008,31021] [2022-07-22 17:30:22,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:30:22,455 INFO L208 MainTranslator]: Completed translation [2022-07-22 17:30:22,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:30:22 WrapperNode [2022-07-22 17:30:22,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 17:30:22,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 17:30:22,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 17:30:22,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 17:30:22,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:30:22" (1/1) ... [2022-07-22 17:30:22,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:30:22" (1/1) ... [2022-07-22 17:30:22,556 INFO L137 Inliner]: procedures = 132, calls = 225, calls flagged for inlining = 62, calls inlined = 57, statements flattened = 1045 [2022-07-22 17:30:22,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 17:30:22,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 17:30:22,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 17:30:22,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 17:30:22,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:30:22" (1/1) ... [2022-07-22 17:30:22,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:30:22" (1/1) ... [2022-07-22 17:30:22,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:30:22" (1/1) ... [2022-07-22 17:30:22,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:30:22" (1/1) ... [2022-07-22 17:30:22,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:30:22" (1/1) ... [2022-07-22 17:30:22,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:30:22" (1/1) ... [2022-07-22 17:30:22,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:30:22" (1/1) ... [2022-07-22 17:30:22,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 17:30:22,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 17:30:22,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 17:30:22,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 17:30:22,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:30:22" (1/1) ... [2022-07-22 17:30:22,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:30:22,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:30:22,705 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 17:30:22,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 17:30:22,743 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-07-22 17:30:22,743 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-07-22 17:30:22,743 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-07-22 17:30:22,744 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-07-22 17:30:22,744 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-07-22 17:30:22,744 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-07-22 17:30:22,744 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-22 17:30:22,744 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-22 17:30:22,745 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-22 17:30:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-22 17:30:22,745 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-07-22 17:30:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-07-22 17:30:22,745 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-22 17:30:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-22 17:30:22,746 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-07-22 17:30:22,746 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-07-22 17:30:22,746 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-07-22 17:30:22,746 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-07-22 17:30:22,746 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-22 17:30:22,746 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-22 17:30:22,747 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-22 17:30:22,747 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-07-22 17:30:22,747 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-07-22 17:30:22,747 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-22 17:30:22,747 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-22 17:30:22,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 17:30:22,748 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-07-22 17:30:22,748 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-07-22 17:30:22,748 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-07-22 17:30:22,748 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-07-22 17:30:22,748 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-22 17:30:22,748 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-22 17:30:22,749 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-22 17:30:22,749 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-22 17:30:22,749 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-22 17:30:22,749 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-22 17:30:22,749 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-07-22 17:30:22,749 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-07-22 17:30:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-22 17:30:22,750 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-22 17:30:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-07-22 17:30:22,750 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-07-22 17:30:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-22 17:30:22,750 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-22 17:30:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-07-22 17:30:22,751 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-07-22 17:30:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 17:30:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-22 17:30:22,751 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-22 17:30:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 17:30:22,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 17:30:22,990 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 17:30:22,992 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 17:30:23,756 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 17:30:23,770 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 17:30:23,770 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 17:30:23,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:30:23 BoogieIcfgContainer [2022-07-22 17:30:23,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 17:30:23,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 17:30:23,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 17:30:23,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 17:30:23,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 05:30:21" (1/3) ... [2022-07-22 17:30:23,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4bebca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:30:23, skipping insertion in model container [2022-07-22 17:30:23,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:30:22" (2/3) ... [2022-07-22 17:30:23,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4bebca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:30:23, skipping insertion in model container [2022-07-22 17:30:23,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:30:23" (3/3) ... [2022-07-22 17:30:23,783 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec6_product31.cil.c [2022-07-22 17:30:23,798 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 17:30:23,798 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 17:30:23,853 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 17:30:23,858 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@150c6ee2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@134f56df [2022-07-22 17:30:23,859 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 17:30:23,869 INFO L276 IsEmpty]: Start isEmpty. Operand has 374 states, 288 states have (on average 1.4965277777777777) internal successors, (431), 292 states have internal predecessors, (431), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-07-22 17:30:23,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-22 17:30:23,897 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:30:23,898 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:30:23,899 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:30:23,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:30:23,905 INFO L85 PathProgramCache]: Analyzing trace with hash -937278279, now seen corresponding path program 1 times [2022-07-22 17:30:23,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:30:23,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743367832] [2022-07-22 17:30:23,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:30:23,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:30:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:24,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:30:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:24,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:30:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:24,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:30:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:24,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:30:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:24,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:30:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:24,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:30:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:24,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:30:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:24,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 17:30:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:24,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 17:30:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:24,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 17:30:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:24,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:30:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:24,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 17:30:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:24,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 17:30:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:24,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:30:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:24,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 17:30:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:24,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 17:30:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:24,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 17:30:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:24,497 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:30:24,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:30:24,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743367832] [2022-07-22 17:30:24,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743367832] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:30:24,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209321650] [2022-07-22 17:30:24,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:30:24,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:30:24,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:30:24,511 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:30:24,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 17:30:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:24,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 17:30:24,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:30:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 17:30:24,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:30:24,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209321650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:30:24,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:30:24,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-07-22 17:30:24,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634821532] [2022-07-22 17:30:24,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:30:24,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 17:30:24,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:30:24,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 17:30:24,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:30:24,910 INFO L87 Difference]: Start difference. First operand has 374 states, 288 states have (on average 1.4965277777777777) internal successors, (431), 292 states have internal predecessors, (431), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:30:24,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:30:24,967 INFO L93 Difference]: Finished difference Result 594 states and 860 transitions. [2022-07-22 17:30:24,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 17:30:24,971 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 126 [2022-07-22 17:30:24,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:30:24,985 INFO L225 Difference]: With dead ends: 594 [2022-07-22 17:30:24,985 INFO L226 Difference]: Without dead ends: 367 [2022-07-22 17:30:24,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:30:24,994 INFO L413 NwaCegarLoop]: 549 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, 549 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:30:24,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:30:25,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-07-22 17:30:25,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2022-07-22 17:30:25,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 282 states have (on average 1.4893617021276595) internal successors, (420), 285 states have internal predecessors, (420), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-07-22 17:30:25,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 541 transitions. [2022-07-22 17:30:25,090 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 541 transitions. Word has length 126 [2022-07-22 17:30:25,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:30:25,093 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 541 transitions. [2022-07-22 17:30:25,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:30:25,093 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 541 transitions. [2022-07-22 17:30:25,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-22 17:30:25,105 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:30:25,106 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:30:25,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 17:30:25,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-22 17:30:25,320 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:30:25,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:30:25,320 INFO L85 PathProgramCache]: Analyzing trace with hash -337301568, now seen corresponding path program 1 times [2022-07-22 17:30:25,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:30:25,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317090615] [2022-07-22 17:30:25,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:30:25,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:30:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:25,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:30:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:25,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:30:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:25,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:30:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:25,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:30:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:25,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:30:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:25,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:30:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:25,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 17:30:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:25,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 17:30:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:25,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:30:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:25,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 17:30:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:25,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:30:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:25,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 17:30:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:25,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 17:30:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:25,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 17:30:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:25,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 17:30:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:25,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 17:30:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:25,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 17:30:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:30:25,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:30:25,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317090615] [2022-07-22 17:30:25,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317090615] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:30:25,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879471980] [2022-07-22 17:30:25,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:30:25,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:30:25,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:30:25,525 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:30:25,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 17:30:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:25,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 17:30:25,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:30:25,933 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 17:30:25,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:30:25,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879471980] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:30:25,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:30:25,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-22 17:30:25,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611548363] [2022-07-22 17:30:25,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:30:25,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:30:25,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:30:25,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:30:25,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:30:25,937 INFO L87 Difference]: Start difference. First operand 367 states and 541 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:30:25,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:30:25,983 INFO L93 Difference]: Finished difference Result 584 states and 841 transitions. [2022-07-22 17:30:25,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:30:25,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 127 [2022-07-22 17:30:25,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:30:25,988 INFO L225 Difference]: With dead ends: 584 [2022-07-22 17:30:25,988 INFO L226 Difference]: Without dead ends: 370 [2022-07-22 17:30:25,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:30:25,991 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 1 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:30:25,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1076 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:30:25,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-07-22 17:30:26,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 369. [2022-07-22 17:30:26,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 284 states have (on average 1.4859154929577465) internal successors, (422), 287 states have internal predecessors, (422), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-07-22 17:30:26,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 543 transitions. [2022-07-22 17:30:26,024 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 543 transitions. Word has length 127 [2022-07-22 17:30:26,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:30:26,027 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 543 transitions. [2022-07-22 17:30:26,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:30:26,028 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 543 transitions. [2022-07-22 17:30:26,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-22 17:30:26,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:30:26,034 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:30:26,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 17:30:26,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-22 17:30:26,256 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:30:26,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:30:26,256 INFO L85 PathProgramCache]: Analyzing trace with hash -2047662697, now seen corresponding path program 1 times [2022-07-22 17:30:26,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:30:26,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780920357] [2022-07-22 17:30:26,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:30:26,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:30:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:26,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:30:26,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:26,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:30:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:26,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:30:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:26,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:30:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:26,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:30:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:26,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:30:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:26,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 17:30:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:26,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:30:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:26,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:30:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:26,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:30:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:26,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 17:30:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:26,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 17:30:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:26,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:30:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:26,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 17:30:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:26,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 17:30:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:26,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 17:30:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:26,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 17:30:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:26,475 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-22 17:30:26,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:30:26,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780920357] [2022-07-22 17:30:26,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780920357] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:30:26,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221500789] [2022-07-22 17:30:26,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:30:26,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:30:26,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:30:26,516 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:30:26,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 17:30:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:26,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 1190 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 17:30:26,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:30:26,835 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 17:30:26,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:30:26,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221500789] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:30:26,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:30:26,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-22 17:30:26,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135453725] [2022-07-22 17:30:26,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:30:26,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:30:26,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:30:26,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:30:26,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:30:26,838 INFO L87 Difference]: Start difference. First operand 369 states and 543 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:30:26,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:30:26,879 INFO L93 Difference]: Finished difference Result 768 states and 1145 transitions. [2022-07-22 17:30:26,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:30:26,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 133 [2022-07-22 17:30:26,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:30:26,884 INFO L225 Difference]: With dead ends: 768 [2022-07-22 17:30:26,885 INFO L226 Difference]: Without dead ends: 426 [2022-07-22 17:30:26,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:30:26,889 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 107 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:30:26,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 1054 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:30:26,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-07-22 17:30:26,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 418. [2022-07-22 17:30:26,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 322 states have (on average 1.5031055900621118) internal successors, (484), 325 states have internal predecessors, (484), 72 states have call successors, (72), 23 states have call predecessors, (72), 23 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-07-22 17:30:26,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 627 transitions. [2022-07-22 17:30:26,924 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 627 transitions. Word has length 133 [2022-07-22 17:30:26,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:30:26,925 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 627 transitions. [2022-07-22 17:30:26,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:30:26,926 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 627 transitions. [2022-07-22 17:30:26,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 17:30:26,928 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:30:26,929 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:30:26,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 17:30:27,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:30:27,145 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:30:27,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:30:27,145 INFO L85 PathProgramCache]: Analyzing trace with hash 790744338, now seen corresponding path program 1 times [2022-07-22 17:30:27,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:30:27,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984119557] [2022-07-22 17:30:27,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:30:27,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:30:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:27,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:30:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:27,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:30:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:27,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:30:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:27,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:30:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:27,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:30:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:27,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:30:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:27,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 17:30:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:27,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 17:30:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:27,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 17:30:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:27,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:30:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:27,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:30:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:27,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 17:30:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:27,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 17:30:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:27,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 17:30:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:27,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 17:30:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:27,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 17:30:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:27,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 17:30:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:27,298 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-22 17:30:27,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:30:27,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984119557] [2022-07-22 17:30:27,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984119557] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:30:27,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095685859] [2022-07-22 17:30:27,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:30:27,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:30:27,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:30:27,301 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:30:27,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 17:30:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:27,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 1197 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 17:30:27,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:30:27,639 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-22 17:30:27,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:30:27,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095685859] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:30:27,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:30:27,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-07-22 17:30:27,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073343635] [2022-07-22 17:30:27,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:30:27,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:30:27,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:30:27,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:30:27,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:30:27,641 INFO L87 Difference]: Start difference. First operand 418 states and 627 transitions. Second operand has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-22 17:30:27,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:30:27,706 INFO L93 Difference]: Finished difference Result 827 states and 1244 transitions. [2022-07-22 17:30:27,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:30:27,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 134 [2022-07-22 17:30:27,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:30:27,709 INFO L225 Difference]: With dead ends: 827 [2022-07-22 17:30:27,710 INFO L226 Difference]: Without dead ends: 420 [2022-07-22 17:30:27,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:30:27,712 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 125 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:30:27,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1983 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:30:27,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-07-22 17:30:27,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2022-07-22 17:30:27,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 323 states have (on average 1.501547987616099) internal successors, (485), 327 states have internal predecessors, (485), 72 states have call successors, (72), 23 states have call predecessors, (72), 24 states have return successors, (73), 71 states have call predecessors, (73), 71 states have call successors, (73) [2022-07-22 17:30:27,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 630 transitions. [2022-07-22 17:30:27,742 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 630 transitions. Word has length 134 [2022-07-22 17:30:27,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:30:27,742 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 630 transitions. [2022-07-22 17:30:27,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-22 17:30:27,743 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 630 transitions. [2022-07-22 17:30:27,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-22 17:30:27,745 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:30:27,745 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:30:27,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 17:30:27,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:30:27,967 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:30:27,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:30:27,968 INFO L85 PathProgramCache]: Analyzing trace with hash -610465485, now seen corresponding path program 1 times [2022-07-22 17:30:27,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:30:27,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301473913] [2022-07-22 17:30:27,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:30:27,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:30:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:30:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:30:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:30:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:30:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 17:30:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 17:30:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 17:30:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 17:30:28,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 17:30:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 17:30:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:30:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 17:30:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 17:30:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 17:30:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 17:30:28,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 17:30:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-22 17:30:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,114 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-22 17:30:28,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:30:28,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301473913] [2022-07-22 17:30:28,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301473913] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:30:28,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827861339] [2022-07-22 17:30:28,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:30:28,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:30:28,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:30:28,117 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:30:28,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 17:30:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 17:30:28,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:30:28,434 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-22 17:30:28,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:30:28,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827861339] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:30:28,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:30:28,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-22 17:30:28,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318877735] [2022-07-22 17:30:28,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:30:28,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:30:28,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:30:28,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:30:28,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-22 17:30:28,436 INFO L87 Difference]: Start difference. First operand 420 states and 630 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-22 17:30:28,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:30:28,506 INFO L93 Difference]: Finished difference Result 829 states and 1249 transitions. [2022-07-22 17:30:28,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:30:28,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 135 [2022-07-22 17:30:28,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:30:28,510 INFO L225 Difference]: With dead ends: 829 [2022-07-22 17:30:28,510 INFO L226 Difference]: Without dead ends: 422 [2022-07-22 17:30:28,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:30:28,512 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 124 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1972 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:30:28,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1972 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:30:28,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-07-22 17:30:28,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2022-07-22 17:30:28,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 324 states have (on average 1.5) internal successors, (486), 329 states have internal predecessors, (486), 72 states have call successors, (72), 23 states have call predecessors, (72), 25 states have return successors, (78), 71 states have call predecessors, (78), 71 states have call successors, (78) [2022-07-22 17:30:28,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 636 transitions. [2022-07-22 17:30:28,532 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 636 transitions. Word has length 135 [2022-07-22 17:30:28,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:30:28,532 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 636 transitions. [2022-07-22 17:30:28,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-22 17:30:28,533 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 636 transitions. [2022-07-22 17:30:28,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-22 17:30:28,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:30:28,535 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:30:28,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 17:30:28,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:30:28,760 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:30:28,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:30:28,760 INFO L85 PathProgramCache]: Analyzing trace with hash -304652879, now seen corresponding path program 1 times [2022-07-22 17:30:28,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:30:28,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677581801] [2022-07-22 17:30:28,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:30:28,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:30:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:30:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:30:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:30:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:30:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:30:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 17:30:28,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 17:30:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:30:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 17:30:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 17:30:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 17:30:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 17:30:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 17:30:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 17:30:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 17:30:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 17:30:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-22 17:30:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:28,889 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-22 17:30:28,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:30:28,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677581801] [2022-07-22 17:30:28,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677581801] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:30:28,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:30:28,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:30:28,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808644661] [2022-07-22 17:30:28,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:30:28,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:30:28,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:30:28,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:30:28,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:30:28,891 INFO L87 Difference]: Start difference. First operand 422 states and 636 transitions. Second operand has 9 states, 8 states have (on average 10.375) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-22 17:30:30,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:30:30,973 INFO L93 Difference]: Finished difference Result 1011 states and 1522 transitions. [2022-07-22 17:30:30,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 17:30:30,973 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 136 [2022-07-22 17:30:30,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:30:30,982 INFO L225 Difference]: With dead ends: 1011 [2022-07-22 17:30:30,982 INFO L226 Difference]: Without dead ends: 612 [2022-07-22 17:30:30,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:30:30,986 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 1305 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 552 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1322 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 2981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 552 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:30:30,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1322 Valid, 1497 Invalid, 2981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [552 Valid, 2429 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 17:30:30,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-07-22 17:30:31,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 422. [2022-07-22 17:30:31,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 324 states have (on average 1.5) internal successors, (486), 329 states have internal predecessors, (486), 72 states have call successors, (72), 23 states have call predecessors, (72), 25 states have return successors, (77), 71 states have call predecessors, (77), 71 states have call successors, (77) [2022-07-22 17:30:31,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 635 transitions. [2022-07-22 17:30:31,033 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 635 transitions. Word has length 136 [2022-07-22 17:30:31,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:30:31,033 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 635 transitions. [2022-07-22 17:30:31,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-22 17:30:31,034 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 635 transitions. [2022-07-22 17:30:31,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-22 17:30:31,036 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:30:31,037 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:30:31,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 17:30:31,037 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:30:31,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:30:31,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1755102132, now seen corresponding path program 2 times [2022-07-22 17:30:31,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:30:31,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059190443] [2022-07-22 17:30:31,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:30:31,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:30:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:31,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:30:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:31,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:30:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:31,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:30:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:31,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:30:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:31,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:30:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:31,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:30:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:31,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 17:30:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:31,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 17:30:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:31,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 17:30:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:31,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 17:30:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:31,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 17:30:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:31,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:30:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:31,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 17:30:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:31,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 17:30:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:31,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 17:30:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:31,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 17:30:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:31,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-22 17:30:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:31,191 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-22 17:30:31,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:30:31,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059190443] [2022-07-22 17:30:31,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059190443] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:30:31,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:30:31,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:30:31,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240552927] [2022-07-22 17:30:31,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:30:31,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:30:31,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:30:31,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:30:31,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:30:31,193 INFO L87 Difference]: Start difference. First operand 422 states and 635 transitions. Second operand has 9 states, 8 states have (on average 10.5) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-22 17:30:32,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:30:32,990 INFO L93 Difference]: Finished difference Result 1013 states and 1525 transitions. [2022-07-22 17:30:32,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 17:30:32,991 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.5) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 137 [2022-07-22 17:30:32,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:30:32,995 INFO L225 Difference]: With dead ends: 1013 [2022-07-22 17:30:32,995 INFO L226 Difference]: Without dead ends: 614 [2022-07-22 17:30:32,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:30:32,998 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 1300 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2444 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 2994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 17:30:32,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1317 Valid, 1498 Invalid, 2994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2444 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 17:30:32,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2022-07-22 17:30:33,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 424. [2022-07-22 17:30:33,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 325 states have (on average 1.4984615384615385) internal successors, (487), 331 states have internal predecessors, (487), 72 states have call successors, (72), 23 states have call predecessors, (72), 26 states have return successors, (79), 71 states have call predecessors, (79), 71 states have call successors, (79) [2022-07-22 17:30:33,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 638 transitions. [2022-07-22 17:30:33,028 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 638 transitions. Word has length 137 [2022-07-22 17:30:33,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:30:33,028 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 638 transitions. [2022-07-22 17:30:33,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.5) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-22 17:30:33,029 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 638 transitions. [2022-07-22 17:30:33,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-22 17:30:33,031 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:30:33,031 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:30:33,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 17:30:33,032 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:30:33,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:30:33,032 INFO L85 PathProgramCache]: Analyzing trace with hash 811193644, now seen corresponding path program 1 times [2022-07-22 17:30:33,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:30:33,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572204784] [2022-07-22 17:30:33,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:30:33,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:30:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:33,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:30:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:33,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:30:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:33,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:30:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:33,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:30:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:33,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:30:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:33,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:30:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:33,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:30:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:33,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 17:30:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:33,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:30:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:33,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 17:30:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:33,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 17:30:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:33,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 17:30:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:33,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:30:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:33,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 17:30:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:33,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 17:30:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:33,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 17:30:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:33,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 17:30:33,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:33,175 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-22 17:30:33,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:30:33,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572204784] [2022-07-22 17:30:33,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572204784] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:30:33,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:30:33,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 17:30:33,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133349236] [2022-07-22 17:30:33,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:30:33,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 17:30:33,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:30:33,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 17:30:33,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:30:33,178 INFO L87 Difference]: Start difference. First operand 424 states and 638 transitions. Second operand has 12 states, 11 states have (on average 8.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-22 17:30:35,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:30:35,949 INFO L93 Difference]: Finished difference Result 1011 states and 1520 transitions. [2022-07-22 17:30:35,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:30:35,950 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 138 [2022-07-22 17:30:35,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:30:35,954 INFO L225 Difference]: With dead ends: 1011 [2022-07-22 17:30:35,954 INFO L226 Difference]: Without dead ends: 614 [2022-07-22 17:30:35,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-22 17:30:35,957 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 1412 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 4402 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 5001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 4402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:30:35,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1412 Valid, 1794 Invalid, 5001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 4402 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 17:30:35,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2022-07-22 17:30:35,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 424. [2022-07-22 17:30:35,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 325 states have (on average 1.4984615384615385) internal successors, (487), 331 states have internal predecessors, (487), 72 states have call successors, (72), 23 states have call predecessors, (72), 26 states have return successors, (78), 71 states have call predecessors, (78), 71 states have call successors, (78) [2022-07-22 17:30:35,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 637 transitions. [2022-07-22 17:30:35,987 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 637 transitions. Word has length 138 [2022-07-22 17:30:35,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:30:35,988 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 637 transitions. [2022-07-22 17:30:35,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-22 17:30:35,988 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 637 transitions. [2022-07-22 17:30:35,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-22 17:30:35,990 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:30:35,990 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:30:35,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 17:30:35,991 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:30:35,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:30:35,991 INFO L85 PathProgramCache]: Analyzing trace with hash 169071964, now seen corresponding path program 2 times [2022-07-22 17:30:35,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:30:35,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132286787] [2022-07-22 17:30:35,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:30:35,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:30:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:36,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:30:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:36,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:30:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:36,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:30:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:36,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:30:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:36,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:30:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:36,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:30:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:36,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 17:30:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:36,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 17:30:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:36,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:30:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:36,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 17:30:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:36,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 17:30:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:36,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:30:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:36,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 17:30:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:36,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 17:30:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:36,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 17:30:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:36,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 17:30:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:36,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 17:30:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:36,151 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-22 17:30:36,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:30:36,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132286787] [2022-07-22 17:30:36,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132286787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:30:36,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:30:36,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 17:30:36,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989366095] [2022-07-22 17:30:36,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:30:36,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 17:30:36,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:30:36,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 17:30:36,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:30:36,154 INFO L87 Difference]: Start difference. First operand 424 states and 637 transitions. Second operand has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-22 17:30:38,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:30:38,805 INFO L93 Difference]: Finished difference Result 1013 states and 1526 transitions. [2022-07-22 17:30:38,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:30:38,806 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 139 [2022-07-22 17:30:38,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:30:38,810 INFO L225 Difference]: With dead ends: 1013 [2022-07-22 17:30:38,810 INFO L226 Difference]: Without dead ends: 616 [2022-07-22 17:30:38,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-22 17:30:38,813 INFO L413 NwaCegarLoop]: 671 mSDtfsCounter, 1407 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 4435 mSolverCounterSat, 594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1407 SdHoareTripleChecker+Valid, 1795 SdHoareTripleChecker+Invalid, 5029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 4435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:30:38,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1407 Valid, 1795 Invalid, 5029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [594 Valid, 4435 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 17:30:38,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-07-22 17:30:38,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 426. [2022-07-22 17:30:38,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 326 states have (on average 1.4969325153374233) internal successors, (488), 333 states have internal predecessors, (488), 72 states have call successors, (72), 23 states have call predecessors, (72), 27 states have return successors, (83), 71 states have call predecessors, (83), 71 states have call successors, (83) [2022-07-22 17:30:38,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 643 transitions. [2022-07-22 17:30:38,843 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 643 transitions. Word has length 139 [2022-07-22 17:30:38,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:30:38,843 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 643 transitions. [2022-07-22 17:30:38,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-22 17:30:38,844 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 643 transitions. [2022-07-22 17:30:38,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-22 17:30:38,846 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:30:38,846 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:30:38,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 17:30:38,846 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:30:38,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:30:38,847 INFO L85 PathProgramCache]: Analyzing trace with hash -903691641, now seen corresponding path program 1 times [2022-07-22 17:30:38,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:30:38,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582710643] [2022-07-22 17:30:38,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:30:38,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:30:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:38,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:30:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:38,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:30:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:38,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:30:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:38,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:30:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:38,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:30:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:38,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:30:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:38,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 17:30:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:38,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 17:30:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:38,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:30:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:38,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:30:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:38,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 17:30:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:38,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 17:30:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:38,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 17:30:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:38,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 17:30:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:38,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 17:30:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:38,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 17:30:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:38,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 17:30:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:38,983 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 17:30:38,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:30:38,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582710643] [2022-07-22 17:30:38,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582710643] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:30:38,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613203225] [2022-07-22 17:30:38,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:30:38,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:30:38,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:30:38,988 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:30:39,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 17:30:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:39,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 1203 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 17:30:39,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:30:39,265 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 17:30:39,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:30:39,347 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 17:30:39,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613203225] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:30:39,347 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:30:39,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2022-07-22 17:30:39,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356100906] [2022-07-22 17:30:39,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:30:39,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 17:30:39,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:30:39,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 17:30:39,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:30:39,351 INFO L87 Difference]: Start difference. First operand 426 states and 643 transitions. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 7 states have internal predecessors, (128), 2 states have call successors, (39), 6 states have call predecessors, (39), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-22 17:30:41,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:30:41,137 INFO L93 Difference]: Finished difference Result 1182 states and 1854 transitions. [2022-07-22 17:30:41,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 17:30:41,137 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 7 states have internal predecessors, (128), 2 states have call successors, (39), 6 states have call predecessors, (39), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 140 [2022-07-22 17:30:41,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:30:41,143 INFO L225 Difference]: With dead ends: 1182 [2022-07-22 17:30:41,143 INFO L226 Difference]: Without dead ends: 968 [2022-07-22 17:30:41,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:30:41,146 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 1611 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 2179 mSolverCounterSat, 697 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1656 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 2876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 697 IncrementalHoareTripleChecker+Valid, 2179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 17:30:41,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1656 Valid, 1986 Invalid, 2876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [697 Valid, 2179 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 17:30:41,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-07-22 17:30:41,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 754. [2022-07-22 17:30:41,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 590 states have (on average 1.5694915254237287) internal successors, (926), 597 states have internal predecessors, (926), 136 states have call successors, (136), 23 states have call predecessors, (136), 27 states have return successors, (157), 135 states have call predecessors, (157), 135 states have call successors, (157) [2022-07-22 17:30:41,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1219 transitions. [2022-07-22 17:30:41,195 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1219 transitions. Word has length 140 [2022-07-22 17:30:41,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:30:41,195 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1219 transitions. [2022-07-22 17:30:41,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 7 states have internal predecessors, (128), 2 states have call successors, (39), 6 states have call predecessors, (39), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-22 17:30:41,196 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1219 transitions. [2022-07-22 17:30:41,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 17:30:41,200 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:30:41,200 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:30:41,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 17:30:41,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:30:41,416 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:30:41,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:30:41,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1843294026, now seen corresponding path program 1 times [2022-07-22 17:30:41,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:30:41,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846399257] [2022-07-22 17:30:41,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:30:41,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:30:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:41,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:30:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:41,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:30:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:41,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:30:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:41,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:30:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:41,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:30:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:41,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:30:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:41,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:30:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:41,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 17:30:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:41,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 17:30:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:41,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 17:30:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:41,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 17:30:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:41,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 17:30:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:41,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 17:30:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:41,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 17:30:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:41,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 17:30:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:41,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 17:30:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:41,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-22 17:30:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:41,507 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 17:30:41,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:30:41,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846399257] [2022-07-22 17:30:41,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846399257] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:30:41,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:30:41,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:30:41,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457970224] [2022-07-22 17:30:41,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:30:41,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:30:41,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:30:41,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:30:41,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:30:41,509 INFO L87 Difference]: Start difference. First operand 754 states and 1219 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:30:42,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:30:42,862 INFO L93 Difference]: Finished difference Result 1963 states and 3225 transitions. [2022-07-22 17:30:42,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:30:42,863 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 146 [2022-07-22 17:30:42,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:30:42,871 INFO L225 Difference]: With dead ends: 1963 [2022-07-22 17:30:42,872 INFO L226 Difference]: Without dead ends: 1277 [2022-07-22 17:30:42,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:30:42,875 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 1296 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 1410 SdHoareTripleChecker+Invalid, 1832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:30:42,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1311 Valid, 1410 Invalid, 1832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 17:30:42,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2022-07-22 17:30:42,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1079. [2022-07-22 17:30:42,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 851 states have (on average 1.5875440658049353) internal successors, (1351), 858 states have internal predecessors, (1351), 200 states have call successors, (200), 23 states have call predecessors, (200), 27 states have return successors, (231), 199 states have call predecessors, (231), 199 states have call successors, (231) [2022-07-22 17:30:42,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1782 transitions. [2022-07-22 17:30:42,950 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1782 transitions. Word has length 146 [2022-07-22 17:30:42,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:30:42,951 INFO L495 AbstractCegarLoop]: Abstraction has 1079 states and 1782 transitions. [2022-07-22 17:30:42,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:30:42,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1782 transitions. [2022-07-22 17:30:42,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-22 17:30:42,958 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:30:42,958 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:30:42,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 17:30:42,958 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:30:42,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:30:42,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1634004674, now seen corresponding path program 1 times [2022-07-22 17:30:42,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:30:42,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873062864] [2022-07-22 17:30:42,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:30:42,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:30:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:43,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:30:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:43,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:30:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:43,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:30:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:43,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:30:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:43,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:30:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:43,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:30:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:43,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:30:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:43,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:30:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:43,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 17:30:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:43,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:30:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:43,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 17:30:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:43,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 17:30:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:43,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 17:30:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:43,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 17:30:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:43,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-22 17:30:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:43,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-22 17:30:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:43,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 17:30:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:43,065 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 17:30:43,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:30:43,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873062864] [2022-07-22 17:30:43,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873062864] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:30:43,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:30:43,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:30:43,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513061014] [2022-07-22 17:30:43,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:30:43,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:30:43,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:30:43,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:30:43,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:30:43,067 INFO L87 Difference]: Start difference. First operand 1079 states and 1782 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:30:44,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:30:44,461 INFO L93 Difference]: Finished difference Result 2743 states and 4574 transitions. [2022-07-22 17:30:44,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:30:44,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 147 [2022-07-22 17:30:44,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:30:44,469 INFO L225 Difference]: With dead ends: 2743 [2022-07-22 17:30:44,470 INFO L226 Difference]: Without dead ends: 1785 [2022-07-22 17:30:44,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:30:44,474 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 1294 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:30:44,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1309 Valid, 1344 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 17:30:44,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2022-07-22 17:30:44,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 1587. [2022-07-22 17:30:44,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1587 states, 1264 states have (on average 1.5996835443037976) internal successors, (2022), 1271 states have internal predecessors, (2022), 295 states have call successors, (295), 23 states have call predecessors, (295), 27 states have return successors, (326), 294 states have call predecessors, (326), 294 states have call successors, (326) [2022-07-22 17:30:44,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 2643 transitions. [2022-07-22 17:30:44,592 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 2643 transitions. Word has length 147 [2022-07-22 17:30:44,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:30:44,593 INFO L495 AbstractCegarLoop]: Abstraction has 1587 states and 2643 transitions. [2022-07-22 17:30:44,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:30:44,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 2643 transitions. [2022-07-22 17:30:44,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-22 17:30:44,603 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:30:44,603 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:30:44,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 17:30:44,603 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:30:44,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:30:44,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1281911896, now seen corresponding path program 1 times [2022-07-22 17:30:44,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:30:44,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102922390] [2022-07-22 17:30:44,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:30:44,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:30:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:44,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:30:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:44,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:30:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:44,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:30:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:44,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:30:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:44,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:30:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:44,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:30:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:44,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 17:30:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:44,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:30:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:44,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:30:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:44,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:30:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:44,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:30:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:44,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 17:30:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:44,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 17:30:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:44,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 17:30:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:44,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-22 17:30:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:44,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-22 17:30:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:44,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-22 17:30:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:44,730 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 17:30:44,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:30:44,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102922390] [2022-07-22 17:30:44,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102922390] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:30:44,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:30:44,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:30:44,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720162704] [2022-07-22 17:30:44,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:30:44,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:30:44,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:30:44,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:30:44,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:30:44,733 INFO L87 Difference]: Start difference. First operand 1587 states and 2643 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:30:46,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:30:46,081 INFO L93 Difference]: Finished difference Result 3895 states and 6583 transitions. [2022-07-22 17:30:46,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:30:46,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 148 [2022-07-22 17:30:46,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:30:46,096 INFO L225 Difference]: With dead ends: 3895 [2022-07-22 17:30:46,097 INFO L226 Difference]: Without dead ends: 2554 [2022-07-22 17:30:46,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:30:46,101 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 1292 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 1815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:30:46,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1307 Valid, 1344 Invalid, 1815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 17:30:46,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2022-07-22 17:30:46,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 2356. [2022-07-22 17:30:46,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2356 states, 1910 states have (on average 1.6089005235602094) internal successors, (3073), 1917 states have internal predecessors, (3073), 418 states have call successors, (418), 23 states have call predecessors, (418), 27 states have return successors, (465), 417 states have call predecessors, (465), 417 states have call successors, (465) [2022-07-22 17:30:46,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 3956 transitions. [2022-07-22 17:30:46,266 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 3956 transitions. Word has length 148 [2022-07-22 17:30:46,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:30:46,266 INFO L495 AbstractCegarLoop]: Abstraction has 2356 states and 3956 transitions. [2022-07-22 17:30:46,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:30:46,267 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 3956 transitions. [2022-07-22 17:30:46,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-22 17:30:46,279 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:30:46,279 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:30:46,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 17:30:46,279 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:30:46,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:30:46,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1639506049, now seen corresponding path program 1 times [2022-07-22 17:30:46,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:30:46,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289368906] [2022-07-22 17:30:46,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:30:46,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:30:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:46,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:30:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:46,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:30:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:46,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:30:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:46,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:30:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:46,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:30:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:46,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:30:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:46,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 17:30:46,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:46,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:30:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:46,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:30:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:46,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 17:30:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:46,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 17:30:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:46,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 17:30:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:46,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 17:30:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:46,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 17:30:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:46,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-22 17:30:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:46,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-22 17:30:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:46,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 17:30:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:46,390 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 17:30:46,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:30:46,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289368906] [2022-07-22 17:30:46,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289368906] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:30:46,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:30:46,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:30:46,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065591562] [2022-07-22 17:30:46,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:30:46,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:30:46,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:30:46,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:30:46,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:30:46,393 INFO L87 Difference]: Start difference. First operand 2356 states and 3956 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:30:47,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:30:47,815 INFO L93 Difference]: Finished difference Result 5689 states and 9717 transitions. [2022-07-22 17:30:47,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:30:47,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 149 [2022-07-22 17:30:47,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:30:47,836 INFO L225 Difference]: With dead ends: 5689 [2022-07-22 17:30:47,836 INFO L226 Difference]: Without dead ends: 3783 [2022-07-22 17:30:47,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:30:47,842 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 1290 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:30:47,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1305 Valid, 1342 Invalid, 1807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 17:30:47,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2022-07-22 17:30:48,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3585. [2022-07-22 17:30:48,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 2960 states have (on average 1.614864864864865) internal successors, (4780), 2967 states have internal predecessors, (4780), 597 states have call successors, (597), 23 states have call predecessors, (597), 27 states have return successors, (670), 596 states have call predecessors, (670), 596 states have call successors, (670) [2022-07-22 17:30:48,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 6047 transitions. [2022-07-22 17:30:48,074 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 6047 transitions. Word has length 149 [2022-07-22 17:30:48,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:30:48,075 INFO L495 AbstractCegarLoop]: Abstraction has 3585 states and 6047 transitions. [2022-07-22 17:30:48,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:30:48,075 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 6047 transitions. [2022-07-22 17:30:48,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-22 17:30:48,092 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:30:48,092 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:30:48,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 17:30:48,093 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:30:48,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:30:48,093 INFO L85 PathProgramCache]: Analyzing trace with hash 445863980, now seen corresponding path program 1 times [2022-07-22 17:30:48,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:30:48,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704860223] [2022-07-22 17:30:48,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:30:48,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:30:48,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:48,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:30:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:48,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:30:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:48,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:30:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:48,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:30:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:48,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:30:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:48,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:30:48,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:48,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 17:30:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:48,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:30:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:48,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 17:30:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:48,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 17:30:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:48,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:30:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:48,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 17:30:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:48,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 17:30:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:48,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 17:30:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:48,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 17:30:48,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:48,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-22 17:30:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:48,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 17:30:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:48,191 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 17:30:48,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:30:48,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704860223] [2022-07-22 17:30:48,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704860223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:30:48,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:30:48,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:30:48,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165588596] [2022-07-22 17:30:48,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:30:48,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:30:48,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:30:48,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:30:48,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:30:48,194 INFO L87 Difference]: Start difference. First operand 3585 states and 6047 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:30:49,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:30:49,769 INFO L93 Difference]: Finished difference Result 8637 states and 14864 transitions. [2022-07-22 17:30:49,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:30:49,769 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 150 [2022-07-22 17:30:49,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:30:49,797 INFO L225 Difference]: With dead ends: 8637 [2022-07-22 17:30:49,797 INFO L226 Difference]: Without dead ends: 5814 [2022-07-22 17:30:49,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:30:49,807 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 1288 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:30:49,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1303 Valid, 1375 Invalid, 1835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 17:30:49,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5814 states. [2022-07-22 17:30:50,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5814 to 5616. [2022-07-22 17:30:50,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5616 states, 4615 states have (on average 1.610400866738895) internal successors, (7432), 4622 states have internal predecessors, (7432), 973 states have call successors, (973), 23 states have call predecessors, (973), 27 states have return successors, (1090), 972 states have call predecessors, (1090), 972 states have call successors, (1090) [2022-07-22 17:30:50,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5616 states to 5616 states and 9495 transitions. [2022-07-22 17:30:50,196 INFO L78 Accepts]: Start accepts. Automaton has 5616 states and 9495 transitions. Word has length 150 [2022-07-22 17:30:50,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:30:50,196 INFO L495 AbstractCegarLoop]: Abstraction has 5616 states and 9495 transitions. [2022-07-22 17:30:50,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:30:50,197 INFO L276 IsEmpty]: Start isEmpty. Operand 5616 states and 9495 transitions. [2022-07-22 17:30:50,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-22 17:30:50,224 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:30:50,224 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:30:50,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 17:30:50,225 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:30:50,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:30:50,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1000804355, now seen corresponding path program 1 times [2022-07-22 17:30:50,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:30:50,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375052906] [2022-07-22 17:30:50,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:30:50,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:30:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:50,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:30:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:50,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:30:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:50,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:30:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:50,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:30:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:50,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:30:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:50,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:30:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:50,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 17:30:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:50,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:30:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:50,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 17:30:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:50,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 17:30:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:50,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 17:30:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:50,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 17:30:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:50,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 17:30:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:50,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 17:30:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:50,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 17:30:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:50,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-22 17:30:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:50,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:30:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:50,325 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 17:30:50,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:30:50,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375052906] [2022-07-22 17:30:50,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375052906] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:30:50,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:30:50,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:30:50,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496856470] [2022-07-22 17:30:50,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:30:50,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:30:50,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:30:50,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:30:50,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:30:50,327 INFO L87 Difference]: Start difference. First operand 5616 states and 9495 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:30:52,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:30:52,010 INFO L93 Difference]: Finished difference Result 13974 states and 24085 transitions. [2022-07-22 17:30:52,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:30:52,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 151 [2022-07-22 17:30:52,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:30:52,060 INFO L225 Difference]: With dead ends: 13974 [2022-07-22 17:30:52,060 INFO L226 Difference]: Without dead ends: 9497 [2022-07-22 17:30:52,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:30:52,077 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 1286 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 600 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1301 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 600 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:30:52,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1301 Valid, 1350 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [600 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 17:30:52,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9497 states. [2022-07-22 17:30:52,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9497 to 9299. [2022-07-22 17:30:52,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9299 states, 7692 states have (on average 1.609204368174727) internal successors, (12378), 7699 states have internal predecessors, (12378), 1579 states have call successors, (1579), 23 states have call predecessors, (1579), 27 states have return successors, (1774), 1578 states have call predecessors, (1774), 1578 states have call successors, (1774) [2022-07-22 17:30:52,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9299 states to 9299 states and 15731 transitions. [2022-07-22 17:30:52,668 INFO L78 Accepts]: Start accepts. Automaton has 9299 states and 15731 transitions. Word has length 151 [2022-07-22 17:30:52,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:30:52,669 INFO L495 AbstractCegarLoop]: Abstraction has 9299 states and 15731 transitions. [2022-07-22 17:30:52,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:30:52,669 INFO L276 IsEmpty]: Start isEmpty. Operand 9299 states and 15731 transitions. [2022-07-22 17:30:52,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-22 17:30:52,704 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:30:52,704 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:30:52,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 17:30:52,704 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:30:52,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:30:52,705 INFO L85 PathProgramCache]: Analyzing trace with hash 889735870, now seen corresponding path program 1 times [2022-07-22 17:30:52,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:30:52,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307913109] [2022-07-22 17:30:52,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:30:52,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:30:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:52,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:30:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:52,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:30:52,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:52,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:30:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:52,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:30:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:52,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:30:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:52,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:30:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:52,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:30:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:52,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 17:30:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:52,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 17:30:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:52,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 17:30:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:52,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 17:30:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:52,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 17:30:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:52,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 17:30:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:52,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 17:30:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:52,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 17:30:52,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:52,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-22 17:30:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:52,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-22 17:30:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:52,795 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 17:30:52,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:30:52,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307913109] [2022-07-22 17:30:52,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307913109] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:30:52,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:30:52,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:30:52,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062112103] [2022-07-22 17:30:52,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:30:52,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:30:52,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:30:52,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:30:52,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:30:52,799 INFO L87 Difference]: Start difference. First operand 9299 states and 15731 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:30:54,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:30:54,631 INFO L93 Difference]: Finished difference Result 24158 states and 41631 transitions. [2022-07-22 17:30:54,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:30:54,632 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 152 [2022-07-22 17:30:54,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:30:54,712 INFO L225 Difference]: With dead ends: 24158 [2022-07-22 17:30:54,713 INFO L226 Difference]: Without dead ends: 16450 [2022-07-22 17:30:54,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:30:54,749 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 1284 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 1841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:30:54,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 1381 Invalid, 1841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [598 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 17:30:54,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16450 states. [2022-07-22 17:30:55,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16450 to 16252. [2022-07-22 17:30:55,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16252 states, 13442 states have (on average 1.6009522392501117) internal successors, (21520), 13449 states have internal predecessors, (21520), 2782 states have call successors, (2782), 23 states have call predecessors, (2782), 27 states have return successors, (3121), 2781 states have call predecessors, (3121), 2781 states have call successors, (3121) [2022-07-22 17:30:55,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16252 states to 16252 states and 27423 transitions. [2022-07-22 17:30:55,780 INFO L78 Accepts]: Start accepts. Automaton has 16252 states and 27423 transitions. Word has length 152 [2022-07-22 17:30:55,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:30:55,780 INFO L495 AbstractCegarLoop]: Abstraction has 16252 states and 27423 transitions. [2022-07-22 17:30:55,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:30:55,780 INFO L276 IsEmpty]: Start isEmpty. Operand 16252 states and 27423 transitions. [2022-07-22 17:30:55,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-22 17:30:55,837 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:30:55,837 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:30:55,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 17:30:55,838 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:30:55,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:30:55,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1224471708, now seen corresponding path program 1 times [2022-07-22 17:30:55,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:30:55,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476320304] [2022-07-22 17:30:55,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:30:55,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:30:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:55,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:30:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:55,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:30:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:55,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:30:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:55,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:30:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:55,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:30:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:55,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:30:55,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:55,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:30:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:55,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 17:30:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:55,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 17:30:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:55,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 17:30:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:55,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 17:30:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:55,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 17:30:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:55,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 17:30:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:55,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 17:30:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:55,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-22 17:30:55,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:55,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 17:30:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:55,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-22 17:30:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:30:55,950 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 17:30:55,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:30:55,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476320304] [2022-07-22 17:30:55,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476320304] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:30:55,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:30:55,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:30:55,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126361712] [2022-07-22 17:30:55,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:30:55,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:30:55,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:30:55,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:30:55,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:30:55,953 INFO L87 Difference]: Start difference. First operand 16252 states and 27423 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:30:58,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:30:58,393 INFO L93 Difference]: Finished difference Result 43124 states and 74230 transitions. [2022-07-22 17:30:58,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:30:58,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 153 [2022-07-22 17:30:58,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:30:58,544 INFO L225 Difference]: With dead ends: 43124 [2022-07-22 17:30:58,545 INFO L226 Difference]: Without dead ends: 29105 [2022-07-22 17:30:58,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:30:58,597 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 1282 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 600 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1297 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 600 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:30:58,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1297 Valid, 1347 Invalid, 1835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [600 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 17:30:58,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29105 states. [2022-07-22 17:31:00,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29105 to 28907. [2022-07-22 17:31:00,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28907 states, 24058 states have (on average 1.597140244409344) internal successors, (38424), 24065 states have internal predecessors, (38424), 4821 states have call successors, (4821), 23 states have call predecessors, (4821), 27 states have return successors, (5434), 4820 states have call predecessors, (5434), 4820 states have call successors, (5434) [2022-07-22 17:31:00,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28907 states to 28907 states and 48679 transitions. [2022-07-22 17:31:00,365 INFO L78 Accepts]: Start accepts. Automaton has 28907 states and 48679 transitions. Word has length 153 [2022-07-22 17:31:00,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:31:00,365 INFO L495 AbstractCegarLoop]: Abstraction has 28907 states and 48679 transitions. [2022-07-22 17:31:00,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:31:00,366 INFO L276 IsEmpty]: Start isEmpty. Operand 28907 states and 48679 transitions. [2022-07-22 17:31:00,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-22 17:31:00,428 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:31:00,428 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:31:00,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 17:31:00,429 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:31:00,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:31:00,429 INFO L85 PathProgramCache]: Analyzing trace with hash -413558180, now seen corresponding path program 1 times [2022-07-22 17:31:00,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:31:00,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114877037] [2022-07-22 17:31:00,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:00,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:31:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:00,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:31:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:00,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:31:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:00,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:31:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:00,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:31:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:00,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:31:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:00,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:31:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:00,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:31:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:00,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 17:31:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:00,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 17:31:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:00,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:31:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:00,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 17:31:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:00,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 17:31:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:00,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 17:31:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:00,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-22 17:31:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:00,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-22 17:31:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:00,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-22 17:31:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:00,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-22 17:31:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:00,524 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 17:31:00,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:31:00,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114877037] [2022-07-22 17:31:00,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114877037] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:31:00,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:31:00,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:31:00,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073573918] [2022-07-22 17:31:00,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:31:00,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:31:00,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:31:00,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:31:00,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:31:00,527 INFO L87 Difference]: Start difference. First operand 28907 states and 48679 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:31:03,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:31:03,731 INFO L93 Difference]: Finished difference Result 78886 states and 134989 transitions. [2022-07-22 17:31:03,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:31:03,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 154 [2022-07-22 17:31:03,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:31:03,947 INFO L225 Difference]: With dead ends: 78886 [2022-07-22 17:31:03,947 INFO L226 Difference]: Without dead ends: 52984 [2022-07-22 17:31:04,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:31:04,023 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 1280 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 1821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:31:04,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1295 Valid, 1372 Invalid, 1821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 17:31:04,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52984 states. [2022-07-22 17:31:06,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52984 to 52786. [2022-07-22 17:31:06,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52786 states, 44222 states have (on average 1.5918095065804352) internal successors, (70393), 44229 states have internal predecessors, (70393), 8536 states have call successors, (8536), 23 states have call predecessors, (8536), 27 states have return successors, (9681), 8535 states have call predecessors, (9681), 8535 states have call successors, (9681) [2022-07-22 17:31:06,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52786 states to 52786 states and 88610 transitions. [2022-07-22 17:31:06,719 INFO L78 Accepts]: Start accepts. Automaton has 52786 states and 88610 transitions. Word has length 154 [2022-07-22 17:31:06,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:31:06,719 INFO L495 AbstractCegarLoop]: Abstraction has 52786 states and 88610 transitions. [2022-07-22 17:31:06,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:31:06,720 INFO L276 IsEmpty]: Start isEmpty. Operand 52786 states and 88610 transitions. [2022-07-22 17:31:06,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-22 17:31:06,790 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:31:06,790 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:31:06,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 17:31:06,790 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:31:06,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:31:06,791 INFO L85 PathProgramCache]: Analyzing trace with hash -59364804, now seen corresponding path program 1 times [2022-07-22 17:31:06,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:31:06,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664993929] [2022-07-22 17:31:06,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:06,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:31:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:06,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:31:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:06,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:31:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:06,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:31:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:06,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:31:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:06,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:31:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:06,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:31:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:06,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:31:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:06,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 17:31:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:06,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:31:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:06,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 17:31:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:06,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:31:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:06,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 17:31:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:06,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 17:31:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:06,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-22 17:31:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:06,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-22 17:31:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:06,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 17:31:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:06,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-22 17:31:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:06,887 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 17:31:06,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:31:06,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664993929] [2022-07-22 17:31:06,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664993929] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:31:06,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:31:06,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:31:06,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031969935] [2022-07-22 17:31:06,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:31:06,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:31:06,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:31:06,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:31:06,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:31:06,890 INFO L87 Difference]: Start difference. First operand 52786 states and 88610 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:31:11,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:31:11,129 INFO L93 Difference]: Finished difference Result 98657 states and 169176 transitions. [2022-07-22 17:31:11,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:31:11,130 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 155 [2022-07-22 17:31:11,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:31:11,494 INFO L225 Difference]: With dead ends: 98657 [2022-07-22 17:31:11,494 INFO L226 Difference]: Without dead ends: 98443 [2022-07-22 17:31:11,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:31:11,538 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 1278 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 600 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 600 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:31:11,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1293 Valid, 1347 Invalid, 1835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [600 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 17:31:11,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98443 states. [2022-07-22 17:31:15,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98443 to 98245. [2022-07-22 17:31:15,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98245 states, 82882 states have (on average 1.58494003523081) internal successors, (131363), 82889 states have internal predecessors, (131363), 15335 states have call successors, (15335), 23 states have call predecessors, (15335), 27 states have return successors, (17526), 15334 states have call predecessors, (17526), 15334 states have call successors, (17526) [2022-07-22 17:31:15,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98245 states to 98245 states and 164224 transitions. [2022-07-22 17:31:15,966 INFO L78 Accepts]: Start accepts. Automaton has 98245 states and 164224 transitions. Word has length 155 [2022-07-22 17:31:15,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:31:15,967 INFO L495 AbstractCegarLoop]: Abstraction has 98245 states and 164224 transitions. [2022-07-22 17:31:15,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:31:15,967 INFO L276 IsEmpty]: Start isEmpty. Operand 98245 states and 164224 transitions. [2022-07-22 17:31:16,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-22 17:31:16,342 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:31:16,342 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:31:16,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 17:31:16,342 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:31:16,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:31:16,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1939624509, now seen corresponding path program 1 times [2022-07-22 17:31:16,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:31:16,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775952622] [2022-07-22 17:31:16,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:16,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:31:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:31:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:31:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:31:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:31:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:31:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:31:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:31:16,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 17:31:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:31:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:31:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 17:31:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 17:31:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 17:31:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-22 17:31:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-22 17:31:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 17:31:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-22 17:31:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,577 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 17:31:16,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:31:16,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775952622] [2022-07-22 17:31:16,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775952622] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:31:16,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605080835] [2022-07-22 17:31:16,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:16,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:31:16,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:31:16,580 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:31:16,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 17:31:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 1272 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-22 17:31:16,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:31:17,048 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 17:31:17,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:31:17,407 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 17:31:17,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605080835] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:31:17,408 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:31:17,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 9] total 32 [2022-07-22 17:31:17,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914875700] [2022-07-22 17:31:17,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:31:17,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-22 17:31:17,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:31:17,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-22 17:31:17,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=914, Unknown=0, NotChecked=0, Total=992 [2022-07-22 17:31:17,410 INFO L87 Difference]: Start difference. First operand 98245 states and 164224 transitions. Second operand has 32 states, 30 states have (on average 8.466666666666667) internal successors, (254), 24 states have internal predecessors, (254), 9 states have call successors, (50), 12 states have call predecessors, (50), 12 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44)