./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec8_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec8_product30.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 15275a4436f6ed835fc824ec788a3589ee34ef53cd98082c25cb994e481acd9a --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 17:54:45,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 17:54:45,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 17:54:45,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 17:54:45,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 17:54:45,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 17:54:45,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 17:54:45,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 17:54:45,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 17:54:45,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 17:54:45,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 17:54:45,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 17:54:45,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 17:54:45,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 17:54:45,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 17:54:45,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 17:54:45,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 17:54:45,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 17:54:45,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 17:54:45,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 17:54:45,631 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 17:54:45,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 17:54:45,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 17:54:45,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 17:54:45,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 17:54:45,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 17:54:45,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 17:54:45,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 17:54:45,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 17:54:45,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 17:54:45,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 17:54:45,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 17:54:45,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 17:54:45,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 17:54:45,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 17:54:45,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 17:54:45,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 17:54:45,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 17:54:45,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 17:54:45,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 17:54:45,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 17:54:45,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 17:54:45,655 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 17:54:45,679 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 17:54:45,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 17:54:45,679 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 17:54:45,680 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 17:54:45,680 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 17:54:45,680 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 17:54:45,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 17:54:45,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 17:54:45,681 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 17:54:45,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 17:54:45,682 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 17:54:45,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 17:54:45,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 17:54:45,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 17:54:45,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 17:54:45,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 17:54:45,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 17:54:45,683 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 17:54:45,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 17:54:45,684 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 17:54:45,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 17:54:45,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 17:54:45,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 17:54:45,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 17:54:45,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:54:45,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 17:54:45,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 17:54:45,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 17:54:45,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 17:54:45,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 17:54:45,686 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 17:54:45,687 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 17:54:45,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 17:54:45,687 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15275a4436f6ed835fc824ec788a3589ee34ef53cd98082c25cb994e481acd9a [2022-07-13 17:54:45,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 17:54:45,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 17:54:45,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 17:54:45,898 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 17:54:45,899 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 17:54:45,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec8_product30.cil.c [2022-07-13 17:54:45,969 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fa6ed7fe/4fd64938300247e38639b8c84ecedde0/FLAG27ccad69d [2022-07-13 17:54:46,479 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 17:54:46,480 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec8_product30.cil.c [2022-07-13 17:54:46,495 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fa6ed7fe/4fd64938300247e38639b8c84ecedde0/FLAG27ccad69d [2022-07-13 17:54:46,977 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fa6ed7fe/4fd64938300247e38639b8c84ecedde0 [2022-07-13 17:54:46,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 17:54:46,979 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 17:54:46,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 17:54:46,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 17:54:46,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 17:54:46,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:54:46" (1/1) ... [2022-07-13 17:54:46,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d253597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:54:46, skipping insertion in model container [2022-07-13 17:54:46,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:54:46" (1/1) ... [2022-07-13 17:54:46,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 17:54:47,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 17:54:47,265 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec8_product30.cil.c[7858,7871] [2022-07-13 17:54:47,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:54:47,462 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 17:54:47,481 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec8_product30.cil.c[7858,7871] [2022-07-13 17:54:47,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:54:47,538 INFO L208 MainTranslator]: Completed translation [2022-07-13 17:54:47,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:54:47 WrapperNode [2022-07-13 17:54:47,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 17:54:47,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 17:54:47,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 17:54:47,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 17:54:47,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:54:47" (1/1) ... [2022-07-13 17:54:47,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:54:47" (1/1) ... [2022-07-13 17:54:47,598 INFO L137 Inliner]: procedures = 132, calls = 223, calls flagged for inlining = 61, calls inlined = 51, statements flattened = 923 [2022-07-13 17:54:47,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 17:54:47,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 17:54:47,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 17:54:47,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 17:54:47,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:54:47" (1/1) ... [2022-07-13 17:54:47,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:54:47" (1/1) ... [2022-07-13 17:54:47,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:54:47" (1/1) ... [2022-07-13 17:54:47,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:54:47" (1/1) ... [2022-07-13 17:54:47,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:54:47" (1/1) ... [2022-07-13 17:54:47,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:54:47" (1/1) ... [2022-07-13 17:54:47,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:54:47" (1/1) ... [2022-07-13 17:54:47,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 17:54:47,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 17:54:47,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 17:54:47,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 17:54:47,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:54:47" (1/1) ... [2022-07-13 17:54:47,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:54:47,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:54:47,682 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 17:54:47,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 17:54:47,713 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-07-13 17:54:47,713 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-07-13 17:54:47,713 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-07-13 17:54:47,713 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-07-13 17:54:47,714 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-07-13 17:54:47,714 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-07-13 17:54:47,714 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-13 17:54:47,714 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-13 17:54:47,714 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-13 17:54:47,721 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-13 17:54:47,721 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-07-13 17:54:47,721 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-07-13 17:54:47,721 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-13 17:54:47,722 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-13 17:54:47,722 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-07-13 17:54:47,722 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-07-13 17:54:47,722 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-07-13 17:54:47,722 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-07-13 17:54:47,722 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-13 17:54:47,722 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-13 17:54:47,722 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-13 17:54:47,722 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-07-13 17:54:47,723 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-07-13 17:54:47,723 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-13 17:54:47,723 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-13 17:54:47,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 17:54:47,723 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-07-13 17:54:47,723 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-07-13 17:54:47,723 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-07-13 17:54:47,723 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-07-13 17:54:47,724 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-13 17:54:47,724 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-13 17:54:47,724 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-13 17:54:47,724 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-13 17:54:47,724 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-13 17:54:47,724 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-13 17:54:47,724 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-07-13 17:54:47,724 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-07-13 17:54:47,724 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-13 17:54:47,725 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-13 17:54:47,725 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-07-13 17:54:47,725 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-07-13 17:54:47,725 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-13 17:54:47,725 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-13 17:54:47,725 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-07-13 17:54:47,725 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-07-13 17:54:47,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 17:54:47,725 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-13 17:54:47,726 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-13 17:54:47,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 17:54:47,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 17:54:47,854 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 17:54:47,856 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 17:54:48,437 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 17:54:48,443 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 17:54:48,444 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 17:54:48,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:54:48 BoogieIcfgContainer [2022-07-13 17:54:48,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 17:54:48,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 17:54:48,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 17:54:48,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 17:54:48,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 05:54:46" (1/3) ... [2022-07-13 17:54:48,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31bf4ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:54:48, skipping insertion in model container [2022-07-13 17:54:48,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:54:47" (2/3) ... [2022-07-13 17:54:48,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31bf4ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:54:48, skipping insertion in model container [2022-07-13 17:54:48,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:54:48" (3/3) ... [2022-07-13 17:54:48,451 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_product30.cil.c [2022-07-13 17:54:48,461 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 17:54:48,461 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 17:54:48,496 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 17:54:48,500 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@28a24134, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@57ece5a6 [2022-07-13 17:54:48,501 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 17:54:48,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 348 states, 270 states have (on average 1.5148148148148148) internal successors, (409), 274 states have internal predecessors, (409), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-07-13 17:54:48,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 17:54:48,515 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:54:48,516 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:54:48,516 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:54:48,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:54:48,520 INFO L85 PathProgramCache]: Analyzing trace with hash 2031054471, now seen corresponding path program 1 times [2022-07-13 17:54:48,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:54:48,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981812878] [2022-07-13 17:54:48,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:54:48,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:54:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:48,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:54:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:48,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:54:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:48,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:54:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:48,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:54:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:48,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:54:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:48,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:54:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:48,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 17:54:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:48,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 17:54:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:48,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:54:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:48,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 17:54:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:48,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 17:54:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:48,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 17:54:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:48,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 17:54:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:48,815 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-13 17:54:48,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:54:48,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981812878] [2022-07-13 17:54:48,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981812878] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:54:48,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12594860] [2022-07-13 17:54:48,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:54:48,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:54:48,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:54:48,819 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:54:48,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 17:54:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:49,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 17:54:49,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:54:49,119 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 17:54:49,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:54:49,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12594860] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:54:49,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:54:49,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-07-13 17:54:49,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743010831] [2022-07-13 17:54:49,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:54:49,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 17:54:49,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:54:49,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 17:54:49,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:54:49,148 INFO L87 Difference]: Start difference. First operand has 348 states, 270 states have (on average 1.5148148148148148) internal successors, (409), 274 states have internal predecessors, (409), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:54:49,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:54:49,190 INFO L93 Difference]: Finished difference Result 542 states and 784 transitions. [2022-07-13 17:54:49,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 17:54:49,192 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 101 [2022-07-13 17:54:49,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:54:49,202 INFO L225 Difference]: With dead ends: 542 [2022-07-13 17:54:49,202 INFO L226 Difference]: Without dead ends: 341 [2022-07-13 17:54:49,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:54:49,208 INFO L413 NwaCegarLoop]: 511 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, 511 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:54:49,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:54:49,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-07-13 17:54:49,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2022-07-13 17:54:49,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 264 states have (on average 1.5075757575757576) internal successors, (398), 267 states have internal predecessors, (398), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-07-13 17:54:49,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 503 transitions. [2022-07-13 17:54:49,257 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 503 transitions. Word has length 101 [2022-07-13 17:54:49,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:54:49,258 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 503 transitions. [2022-07-13 17:54:49,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:54:49,259 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 503 transitions. [2022-07-13 17:54:49,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 17:54:49,263 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:54:49,263 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:54:49,283 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 17:54:49,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-13 17:54:49,482 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:54:49,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:54:49,483 INFO L85 PathProgramCache]: Analyzing trace with hash -574775984, now seen corresponding path program 1 times [2022-07-13 17:54:49,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:54:49,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424704893] [2022-07-13 17:54:49,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:54:49,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:54:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:49,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:54:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:49,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:54:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:49,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:54:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:49,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:54:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:49,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:54:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:49,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:54:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:49,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 17:54:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:49,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 17:54:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:49,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 17:54:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:49,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:54:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:49,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 17:54:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:49,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 17:54:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:49,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 17:54:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:49,616 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-13 17:54:49,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:54:49,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424704893] [2022-07-13 17:54:49,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424704893] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:54:49,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750921510] [2022-07-13 17:54:49,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:54:49,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:54:49,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:54:49,640 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:54:49,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 17:54:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:49,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 17:54:49,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:54:49,915 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 17:54:49,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:54:49,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750921510] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:54:49,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:54:49,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-13 17:54:49,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938967243] [2022-07-13 17:54:49,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:54:49,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 17:54:49,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:54:49,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 17:54:49,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:54:49,918 INFO L87 Difference]: Start difference. First operand 341 states and 503 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:54:49,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:54:49,943 INFO L93 Difference]: Finished difference Result 532 states and 765 transitions. [2022-07-13 17:54:49,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 17:54:49,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 102 [2022-07-13 17:54:49,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:54:49,947 INFO L225 Difference]: With dead ends: 532 [2022-07-13 17:54:49,947 INFO L226 Difference]: Without dead ends: 344 [2022-07-13 17:54:49,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:54:49,949 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 1 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:54:49,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1000 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:54:49,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-07-13 17:54:49,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 343. [2022-07-13 17:54:49,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 266 states have (on average 1.5037593984962405) internal successors, (400), 269 states have internal predecessors, (400), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-07-13 17:54:49,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 505 transitions. [2022-07-13 17:54:49,966 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 505 transitions. Word has length 102 [2022-07-13 17:54:49,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:54:49,967 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 505 transitions. [2022-07-13 17:54:49,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:54:49,967 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 505 transitions. [2022-07-13 17:54:49,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-13 17:54:49,970 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:54:49,970 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:54:49,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 17:54:50,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-13 17:54:50,183 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:54:50,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:54:50,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1701758514, now seen corresponding path program 1 times [2022-07-13 17:54:50,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:54:50,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039341370] [2022-07-13 17:54:50,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:54:50,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:54:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:54:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:54:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:54:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:54:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:54:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:54:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:54:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 17:54:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 17:54:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 17:54:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 17:54:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 17:54:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 17:54:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 17:54:50,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:54:50,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039341370] [2022-07-13 17:54:50,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039341370] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:54:50,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126856607] [2022-07-13 17:54:50,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:54:50,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:54:50,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:54:50,351 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:54:50,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 17:54:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:54:50,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:54:50,571 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 17:54:50,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:54:50,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126856607] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:54:50,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:54:50,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-13 17:54:50,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723076505] [2022-07-13 17:54:50,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:54:50,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 17:54:50,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:54:50,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 17:54:50,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:54:50,573 INFO L87 Difference]: Start difference. First operand 343 states and 505 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:54:50,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:54:50,599 INFO L93 Difference]: Finished difference Result 716 states and 1069 transitions. [2022-07-13 17:54:50,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 17:54:50,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2022-07-13 17:54:50,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:54:50,602 INFO L225 Difference]: With dead ends: 716 [2022-07-13 17:54:50,602 INFO L226 Difference]: Without dead ends: 400 [2022-07-13 17:54:50,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:54:50,604 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 107 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:54:50,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 985 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:54:50,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-07-13 17:54:50,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 392. [2022-07-13 17:54:50,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 304 states have (on average 1.519736842105263) internal successors, (462), 307 states have internal predecessors, (462), 64 states have call successors, (64), 23 states have call predecessors, (64), 23 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-07-13 17:54:50,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 589 transitions. [2022-07-13 17:54:50,621 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 589 transitions. Word has length 111 [2022-07-13 17:54:50,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:54:50,622 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 589 transitions. [2022-07-13 17:54:50,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:54:50,622 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 589 transitions. [2022-07-13 17:54:50,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-13 17:54:50,624 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:54:50,624 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:54:50,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-13 17:54:50,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:54:50,850 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:54:50,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:54:50,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1695941731, now seen corresponding path program 1 times [2022-07-13 17:54:50,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:54:50,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918052718] [2022-07-13 17:54:50,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:54:50,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:54:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:54:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:54:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:54:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:54:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:54:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:54:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 17:54:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 17:54:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 17:54:50,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-13 17:54:50,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 17:54:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 17:54:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 17:54:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:50,949 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 17:54:50,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:54:50,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918052718] [2022-07-13 17:54:50,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918052718] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:54:50,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498815547] [2022-07-13 17:54:50,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:54:50,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:54:50,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:54:50,959 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:54:50,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 17:54:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:51,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 17:54:51,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:54:51,257 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 17:54:51,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:54:51,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498815547] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:54:51,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:54:51,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-07-13 17:54:51,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138076258] [2022-07-13 17:54:51,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:54:51,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 17:54:51,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:54:51,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 17:54:51,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:54:51,260 INFO L87 Difference]: Start difference. First operand 392 states and 589 transitions. Second operand has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:54:51,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:54:51,303 INFO L93 Difference]: Finished difference Result 775 states and 1168 transitions. [2022-07-13 17:54:51,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:54:51,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2022-07-13 17:54:51,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:54:51,306 INFO L225 Difference]: With dead ends: 775 [2022-07-13 17:54:51,306 INFO L226 Difference]: Without dead ends: 394 [2022-07-13 17:54:51,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:54:51,308 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 125 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1831 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:54:51,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1831 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:54:51,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-07-13 17:54:51,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2022-07-13 17:54:51,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 305 states have (on average 1.518032786885246) internal successors, (463), 309 states have internal predecessors, (463), 64 states have call successors, (64), 23 states have call predecessors, (64), 24 states have return successors, (65), 63 states have call predecessors, (65), 63 states have call successors, (65) [2022-07-13 17:54:51,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 592 transitions. [2022-07-13 17:54:51,337 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 592 transitions. Word has length 112 [2022-07-13 17:54:51,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:54:51,338 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 592 transitions. [2022-07-13 17:54:51,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:54:51,338 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 592 transitions. [2022-07-13 17:54:51,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 17:54:51,339 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:54:51,340 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:54:51,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 17:54:51,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:54:51,571 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:54:51,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:54:51,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1112941486, now seen corresponding path program 1 times [2022-07-13 17:54:51,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:54:51,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855929513] [2022-07-13 17:54:51,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:54:51,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:54:51,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:51,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:54:51,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:51,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:54:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:51,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:54:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:51,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:54:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:51,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 17:54:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:51,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:54:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:51,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 17:54:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:51,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 17:54:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:51,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:54:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:51,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 17:54:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:51,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 17:54:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:51,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 17:54:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:51,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 17:54:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:51,693 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 17:54:51,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:54:51,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855929513] [2022-07-13 17:54:51,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855929513] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:54:51,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258482611] [2022-07-13 17:54:51,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:54:51,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:54:51,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:54:51,696 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:54:51,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 17:54:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:51,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 17:54:51,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:54:51,940 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 17:54:51,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:54:51,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258482611] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:54:51,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:54:51,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-13 17:54:51,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973536178] [2022-07-13 17:54:51,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:54:51,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 17:54:51,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:54:51,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 17:54:51,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:54:51,943 INFO L87 Difference]: Start difference. First operand 394 states and 592 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:54:52,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:54:52,002 INFO L93 Difference]: Finished difference Result 777 states and 1173 transitions. [2022-07-13 17:54:52,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:54:52,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2022-07-13 17:54:52,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:54:52,005 INFO L225 Difference]: With dead ends: 777 [2022-07-13 17:54:52,005 INFO L226 Difference]: Without dead ends: 396 [2022-07-13 17:54:52,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-13 17:54:52,007 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 124 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1820 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:54:52,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1820 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:54:52,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-07-13 17:54:52,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2022-07-13 17:54:52,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 306 states have (on average 1.5163398692810457) internal successors, (464), 311 states have internal predecessors, (464), 64 states have call successors, (64), 23 states have call predecessors, (64), 25 states have return successors, (70), 63 states have call predecessors, (70), 63 states have call successors, (70) [2022-07-13 17:54:52,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 598 transitions. [2022-07-13 17:54:52,022 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 598 transitions. Word has length 113 [2022-07-13 17:54:52,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:54:52,023 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 598 transitions. [2022-07-13 17:54:52,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:54:52,023 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 598 transitions. [2022-07-13 17:54:52,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-13 17:54:52,024 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:54:52,025 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:54:52,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 17:54:52,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:54:52,242 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:54:52,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:54:52,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1060391108, now seen corresponding path program 1 times [2022-07-13 17:54:52,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:54:52,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615313153] [2022-07-13 17:54:52,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:54:52,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:54:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:52,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:54:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:52,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:54:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:52,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:54:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:52,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:54:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:52,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:54:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:52,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-13 17:54:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:52,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 17:54:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:52,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:54:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:52,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:54:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:52,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 17:54:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:52,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 17:54:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:52,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 17:54:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:52,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 17:54:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:52,331 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 17:54:52,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:54:52,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615313153] [2022-07-13 17:54:52,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615313153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:54:52,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:54:52,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:54:52,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787707183] [2022-07-13 17:54:52,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:54:52,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:54:52,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:54:52,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:54:52,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:54:52,334 INFO L87 Difference]: Start difference. First operand 396 states and 598 transitions. Second operand has 9 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:54:53,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:54:53,554 INFO L93 Difference]: Finished difference Result 885 states and 1338 transitions. [2022-07-13 17:54:53,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 17:54:53,554 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2022-07-13 17:54:53,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:54:53,557 INFO L225 Difference]: With dead ends: 885 [2022-07-13 17:54:53,558 INFO L226 Difference]: Without dead ends: 512 [2022-07-13 17:54:53,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 17:54:53,560 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 1264 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 2232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:54:53,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1281 Valid, 1363 Invalid, 2232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 1799 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 17:54:53,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-07-13 17:54:53,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 396. [2022-07-13 17:54:53,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 306 states have (on average 1.5163398692810457) internal successors, (464), 311 states have internal predecessors, (464), 64 states have call successors, (64), 23 states have call predecessors, (64), 25 states have return successors, (69), 63 states have call predecessors, (69), 63 states have call successors, (69) [2022-07-13 17:54:53,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 597 transitions. [2022-07-13 17:54:53,582 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 597 transitions. Word has length 114 [2022-07-13 17:54:53,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:54:53,582 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 597 transitions. [2022-07-13 17:54:53,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:54:53,582 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 597 transitions. [2022-07-13 17:54:53,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-13 17:54:53,584 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:54:53,584 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:54:53,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 17:54:53,584 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:54:53,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:54:53,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1537453393, now seen corresponding path program 2 times [2022-07-13 17:54:53,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:54:53,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570906178] [2022-07-13 17:54:53,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:54:53,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:54:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:53,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:54:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:53,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:54:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:53,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:54:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:53,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:54:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:53,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:54:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:53,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 17:54:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:53,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:54:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:53,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 17:54:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:53,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 17:54:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:53,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 17:54:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:53,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 17:54:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:53,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 17:54:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:53,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 17:54:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:53,662 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 17:54:53,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:54:53,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570906178] [2022-07-13 17:54:53,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570906178] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:54:53,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:54:53,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:54:53,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217372369] [2022-07-13 17:54:53,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:54:53,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:54:53,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:54:53,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:54:53,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:54:53,664 INFO L87 Difference]: Start difference. First operand 396 states and 597 transitions. Second operand has 9 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:54:55,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:54:55,051 INFO L93 Difference]: Finished difference Result 887 states and 1341 transitions. [2022-07-13 17:54:55,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 17:54:55,052 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2022-07-13 17:54:55,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:54:55,056 INFO L225 Difference]: With dead ends: 887 [2022-07-13 17:54:55,056 INFO L226 Difference]: Without dead ends: 514 [2022-07-13 17:54:55,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 17:54:55,058 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 1328 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 2167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 17:54:55,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1345 Valid, 1342 Invalid, 2167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 1732 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 17:54:55,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-07-13 17:54:55,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 398. [2022-07-13 17:54:55,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 307 states have (on average 1.514657980456026) internal successors, (465), 313 states have internal predecessors, (465), 64 states have call successors, (64), 23 states have call predecessors, (64), 26 states have return successors, (71), 63 states have call predecessors, (71), 63 states have call successors, (71) [2022-07-13 17:54:55,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 600 transitions. [2022-07-13 17:54:55,102 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 600 transitions. Word has length 115 [2022-07-13 17:54:55,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:54:55,103 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 600 transitions. [2022-07-13 17:54:55,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:54:55,103 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 600 transitions. [2022-07-13 17:54:55,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-13 17:54:55,105 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:54:55,105 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:54:55,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 17:54:55,106 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:54:55,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:54:55,106 INFO L85 PathProgramCache]: Analyzing trace with hash -2002771209, now seen corresponding path program 1 times [2022-07-13 17:54:55,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:54:55,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407986621] [2022-07-13 17:54:55,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:54:55,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:54:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:55,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:54:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:55,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:54:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:55,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:54:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:55,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:54:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:55,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:54:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:55,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:54:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:55,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 17:54:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:55,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 17:54:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:55,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 17:54:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:55,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 17:54:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:55,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 17:54:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:55,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 17:54:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:55,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-13 17:54:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:55,232 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 17:54:55,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:54:55,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407986621] [2022-07-13 17:54:55,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407986621] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:54:55,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:54:55,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 17:54:55,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800589762] [2022-07-13 17:54:55,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:54:55,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 17:54:55,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:54:55,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 17:54:55,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:54:55,234 INFO L87 Difference]: Start difference. First operand 398 states and 600 transitions. Second operand has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-13 17:54:57,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:54:57,160 INFO L93 Difference]: Finished difference Result 885 states and 1336 transitions. [2022-07-13 17:54:57,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 17:54:57,161 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2022-07-13 17:54:57,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:54:57,165 INFO L225 Difference]: With dead ends: 885 [2022-07-13 17:54:57,165 INFO L226 Difference]: Without dead ends: 514 [2022-07-13 17:54:57,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-13 17:54:57,167 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 1458 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3076 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 3576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 3076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:54:57,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 1630 Invalid, 3576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [500 Valid, 3076 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 17:54:57,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-07-13 17:54:57,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 398. [2022-07-13 17:54:57,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 307 states have (on average 1.514657980456026) internal successors, (465), 313 states have internal predecessors, (465), 64 states have call successors, (64), 23 states have call predecessors, (64), 26 states have return successors, (70), 63 states have call predecessors, (70), 63 states have call successors, (70) [2022-07-13 17:54:57,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 599 transitions. [2022-07-13 17:54:57,220 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 599 transitions. Word has length 116 [2022-07-13 17:54:57,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:54:57,220 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 599 transitions. [2022-07-13 17:54:57,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-13 17:54:57,220 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 599 transitions. [2022-07-13 17:54:57,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-13 17:54:57,221 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:54:57,221 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:54:57,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 17:54:57,222 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:54:57,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:54:57,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1002334185, now seen corresponding path program 2 times [2022-07-13 17:54:57,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:54:57,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727971983] [2022-07-13 17:54:57,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:54:57,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:54:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:57,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:54:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:57,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:54:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:57,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:54:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:57,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:54:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:57,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:54:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:57,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:54:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:57,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 17:54:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:57,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:54:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:57,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:54:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:57,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 17:54:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:57,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 17:54:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:57,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 17:54:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:57,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 17:54:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:57,360 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 17:54:57,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:54:57,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727971983] [2022-07-13 17:54:57,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727971983] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:54:57,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:54:57,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 17:54:57,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836912723] [2022-07-13 17:54:57,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:54:57,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 17:54:57,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:54:57,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 17:54:57,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:54:57,362 INFO L87 Difference]: Start difference. First operand 398 states and 599 transitions. Second operand has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-13 17:54:59,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:54:59,341 INFO L93 Difference]: Finished difference Result 887 states and 1342 transitions. [2022-07-13 17:54:59,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 17:54:59,342 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 117 [2022-07-13 17:54:59,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:54:59,345 INFO L225 Difference]: With dead ends: 887 [2022-07-13 17:54:59,345 INFO L226 Difference]: Without dead ends: 516 [2022-07-13 17:54:59,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-13 17:54:59,347 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 1384 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3270 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1384 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 3754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 3270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:54:59,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1384 Valid, 1655 Invalid, 3754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 3270 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 17:54:59,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-07-13 17:54:59,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 400. [2022-07-13 17:54:59,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 308 states have (on average 1.5129870129870129) internal successors, (466), 315 states have internal predecessors, (466), 64 states have call successors, (64), 23 states have call predecessors, (64), 27 states have return successors, (75), 63 states have call predecessors, (75), 63 states have call successors, (75) [2022-07-13 17:54:59,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 605 transitions. [2022-07-13 17:54:59,370 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 605 transitions. Word has length 117 [2022-07-13 17:54:59,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:54:59,370 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 605 transitions. [2022-07-13 17:54:59,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-13 17:54:59,370 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 605 transitions. [2022-07-13 17:54:59,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-13 17:54:59,372 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:54:59,372 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:54:59,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 17:54:59,372 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:54:59,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:54:59,373 INFO L85 PathProgramCache]: Analyzing trace with hash -2130467694, now seen corresponding path program 1 times [2022-07-13 17:54:59,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:54:59,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298243934] [2022-07-13 17:54:59,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:54:59,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:54:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:59,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:54:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:59,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:54:59,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:59,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:54:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:59,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:54:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:59,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:54:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:59,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:54:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:59,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 17:54:59,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:59,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 17:54:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:59,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 17:54:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:59,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 17:54:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:59,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 17:54:59,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:59,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 17:54:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:59,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 17:54:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:59,507 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-13 17:54:59,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:54:59,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298243934] [2022-07-13 17:54:59,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298243934] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:54:59,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292014278] [2022-07-13 17:54:59,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:54:59,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:54:59,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:54:59,510 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:54:59,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 17:54:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:54:59,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 1103 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:54:59,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:54:59,804 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:54:59,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 17:54:59,867 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:54:59,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292014278] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 17:54:59,867 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 17:54:59,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2022-07-13 17:54:59,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122044439] [2022-07-13 17:54:59,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 17:54:59,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 17:54:59,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:54:59,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 17:54:59,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:54:59,869 INFO L87 Difference]: Start difference. First operand 400 states and 605 transitions. Second operand has 15 states, 14 states have (on average 9.642857142857142) internal successors, (135), 11 states have internal predecessors, (135), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2022-07-13 17:55:02,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:55:02,930 INFO L93 Difference]: Finished difference Result 1566 states and 2570 transitions. [2022-07-13 17:55:02,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 17:55:02,931 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 9.642857142857142) internal successors, (135), 11 states have internal predecessors, (135), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) Word has length 118 [2022-07-13 17:55:02,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:55:02,937 INFO L225 Difference]: With dead ends: 1566 [2022-07-13 17:55:02,937 INFO L226 Difference]: Without dead ends: 1197 [2022-07-13 17:55:02,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-07-13 17:55:02,940 INFO L413 NwaCegarLoop]: 707 mSDtfsCounter, 2854 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 5253 mSolverCounterSat, 1119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2856 SdHoareTripleChecker+Valid, 3626 SdHoareTripleChecker+Invalid, 6372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1119 IncrementalHoareTripleChecker+Valid, 5253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:55:02,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2856 Valid, 3626 Invalid, 6372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1119 Valid, 5253 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 17:55:02,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2022-07-13 17:55:02,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 728. [2022-07-13 17:55:02,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 572 states have (on average 1.5681818181818181) internal successors, (897), 579 states have internal predecessors, (897), 128 states have call successors, (128), 23 states have call predecessors, (128), 27 states have return successors, (149), 127 states have call predecessors, (149), 127 states have call successors, (149) [2022-07-13 17:55:02,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1174 transitions. [2022-07-13 17:55:02,983 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1174 transitions. Word has length 118 [2022-07-13 17:55:02,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:55:02,983 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1174 transitions. [2022-07-13 17:55:02,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 9.642857142857142) internal successors, (135), 11 states have internal predecessors, (135), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2022-07-13 17:55:02,984 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1174 transitions. [2022-07-13 17:55:02,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-13 17:55:02,986 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:55:02,986 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:55:03,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 17:55:03,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:55:03,205 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:55:03,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:55:03,206 INFO L85 PathProgramCache]: Analyzing trace with hash 2048334358, now seen corresponding path program 1 times [2022-07-13 17:55:03,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:55:03,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415545829] [2022-07-13 17:55:03,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:55:03,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:55:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:03,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:55:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:03,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:55:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:03,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:55:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:03,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:55:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:03,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:55:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:03,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:55:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:03,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 17:55:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:03,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 17:55:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:03,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 17:55:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:03,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 17:55:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:03,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 17:55:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:03,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 17:55:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:03,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 17:55:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:03,290 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:55:03,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:55:03,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415545829] [2022-07-13 17:55:03,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415545829] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:55:03,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:55:03,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:55:03,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890085993] [2022-07-13 17:55:03,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:55:03,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:55:03,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:55:03,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:55:03,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:55:03,292 INFO L87 Difference]: Start difference. First operand 728 states and 1174 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:55:04,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:55:04,427 INFO L93 Difference]: Finished difference Result 1802 states and 2973 transitions. [2022-07-13 17:55:04,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:55:04,428 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2022-07-13 17:55:04,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:55:04,434 INFO L225 Difference]: With dead ends: 1802 [2022-07-13 17:55:04,435 INFO L226 Difference]: Without dead ends: 1152 [2022-07-13 17:55:04,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:55:04,437 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 1291 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:55:04,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1306 Valid, 1220 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 17:55:04,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2022-07-13 17:55:04,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1028. [2022-07-13 17:55:04,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 808 states have (on average 1.5866336633663367) internal successors, (1282), 815 states have internal predecessors, (1282), 192 states have call successors, (192), 23 states have call predecessors, (192), 27 states have return successors, (223), 191 states have call predecessors, (223), 191 states have call successors, (223) [2022-07-13 17:55:04,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1697 transitions. [2022-07-13 17:55:04,487 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1697 transitions. Word has length 121 [2022-07-13 17:55:04,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:55:04,488 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1697 transitions. [2022-07-13 17:55:04,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:55:04,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1697 transitions. [2022-07-13 17:55:04,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-13 17:55:04,491 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:55:04,492 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:55:04,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 17:55:04,492 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:55:04,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:55:04,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1488494286, now seen corresponding path program 1 times [2022-07-13 17:55:04,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:55:04,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257195352] [2022-07-13 17:55:04,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:55:04,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:55:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:04,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:55:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:04,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:55:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:04,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:55:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:04,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:55:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:04,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:55:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:04,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:55:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:04,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:55:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:04,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:55:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:04,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 17:55:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:04,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 17:55:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:04,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 17:55:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:04,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 17:55:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:04,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 17:55:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:04,591 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:55:04,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:55:04,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257195352] [2022-07-13 17:55:04,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257195352] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:55:04,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:55:04,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:55:04,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197715983] [2022-07-13 17:55:04,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:55:04,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:55:04,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:55:04,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:55:04,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:55:04,593 INFO L87 Difference]: Start difference. First operand 1028 states and 1697 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:55:05,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:55:05,673 INFO L93 Difference]: Finished difference Result 2542 states and 4253 transitions. [2022-07-13 17:55:05,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:55:05,674 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2022-07-13 17:55:05,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:55:05,681 INFO L225 Difference]: With dead ends: 2542 [2022-07-13 17:55:05,681 INFO L226 Difference]: Without dead ends: 1645 [2022-07-13 17:55:05,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:55:05,684 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 1231 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 17:55:05,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1246 Valid, 1224 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 17:55:05,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2022-07-13 17:55:05,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 1521. [2022-07-13 17:55:05,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1206 states have (on average 1.5953565505804312) internal successors, (1924), 1213 states have internal predecessors, (1924), 287 states have call successors, (287), 23 states have call predecessors, (287), 27 states have return successors, (318), 286 states have call predecessors, (318), 286 states have call successors, (318) [2022-07-13 17:55:05,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2529 transitions. [2022-07-13 17:55:05,779 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2529 transitions. Word has length 122 [2022-07-13 17:55:05,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:55:05,779 INFO L495 AbstractCegarLoop]: Abstraction has 1521 states and 2529 transitions. [2022-07-13 17:55:05,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:55:05,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2529 transitions. [2022-07-13 17:55:05,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-13 17:55:05,785 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:55:05,785 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:55:05,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 17:55:05,785 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:55:05,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:55:05,786 INFO L85 PathProgramCache]: Analyzing trace with hash 772478308, now seen corresponding path program 1 times [2022-07-13 17:55:05,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:55:05,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141901381] [2022-07-13 17:55:05,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:55:05,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:55:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:05,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:55:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:05,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:55:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:05,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:55:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:05,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:55:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:05,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:55:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:05,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:55:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:05,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 17:55:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:05,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:55:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:05,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 17:55:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:05,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 17:55:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:05,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 17:55:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:05,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-13 17:55:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:05,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 17:55:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:05,848 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:55:05,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:55:05,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141901381] [2022-07-13 17:55:05,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141901381] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:55:05,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:55:05,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:55:05,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154499310] [2022-07-13 17:55:05,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:55:05,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:55:05,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:55:05,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:55:05,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:55:05,850 INFO L87 Difference]: Start difference. First operand 1521 states and 2529 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:55:07,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:55:07,147 INFO L93 Difference]: Finished difference Result 3644 states and 6171 transitions. [2022-07-13 17:55:07,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:55:07,147 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2022-07-13 17:55:07,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:55:07,188 INFO L225 Difference]: With dead ends: 3644 [2022-07-13 17:55:07,189 INFO L226 Difference]: Without dead ends: 2389 [2022-07-13 17:55:07,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:55:07,193 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 1239 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:55:07,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1254 Valid, 1208 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 17:55:07,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2022-07-13 17:55:07,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 2265. [2022-07-13 17:55:07,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2265 states, 1827 states have (on average 1.60207991242474) internal successors, (2927), 1834 states have internal predecessors, (2927), 410 states have call successors, (410), 23 states have call predecessors, (410), 27 states have return successors, (457), 409 states have call predecessors, (457), 409 states have call successors, (457) [2022-07-13 17:55:07,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2265 states to 2265 states and 3794 transitions. [2022-07-13 17:55:07,415 INFO L78 Accepts]: Start accepts. Automaton has 2265 states and 3794 transitions. Word has length 123 [2022-07-13 17:55:07,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:55:07,415 INFO L495 AbstractCegarLoop]: Abstraction has 2265 states and 3794 transitions. [2022-07-13 17:55:07,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:55:07,416 INFO L276 IsEmpty]: Start isEmpty. Operand 2265 states and 3794 transitions. [2022-07-13 17:55:07,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 17:55:07,440 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:55:07,440 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:55:07,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 17:55:07,441 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:55:07,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:55:07,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1919292335, now seen corresponding path program 1 times [2022-07-13 17:55:07,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:55:07,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599064297] [2022-07-13 17:55:07,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:55:07,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:55:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:07,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:55:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:07,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:55:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:07,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:55:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:07,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:55:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:07,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:55:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:07,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:55:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:07,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:55:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:07,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 17:55:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:07,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 17:55:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:07,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 17:55:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:07,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 17:55:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:07,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 17:55:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:07,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-13 17:55:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:07,542 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:55:07,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:55:07,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599064297] [2022-07-13 17:55:07,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599064297] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:55:07,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:55:07,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:55:07,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154121565] [2022-07-13 17:55:07,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:55:07,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:55:07,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:55:07,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:55:07,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:55:07,544 INFO L87 Difference]: Start difference. First operand 2265 states and 3794 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:55:08,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:55:08,635 INFO L93 Difference]: Finished difference Result 5353 states and 9151 transitions. [2022-07-13 17:55:08,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:55:08,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2022-07-13 17:55:08,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:55:08,649 INFO L225 Difference]: With dead ends: 5353 [2022-07-13 17:55:08,649 INFO L226 Difference]: Without dead ends: 3573 [2022-07-13 17:55:08,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:55:08,654 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 1276 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 474 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 17:55:08,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1291 Valid, 1194 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [474 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 17:55:08,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3573 states. [2022-07-13 17:55:08,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3573 to 3449. [2022-07-13 17:55:08,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3449 states, 2832 states have (on average 1.6062853107344632) internal successors, (4549), 2839 states have internal predecessors, (4549), 589 states have call successors, (589), 23 states have call predecessors, (589), 27 states have return successors, (662), 588 states have call predecessors, (662), 588 states have call successors, (662) [2022-07-13 17:55:08,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3449 states to 3449 states and 5800 transitions. [2022-07-13 17:55:08,881 INFO L78 Accepts]: Start accepts. Automaton has 3449 states and 5800 transitions. Word has length 124 [2022-07-13 17:55:08,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:55:08,881 INFO L495 AbstractCegarLoop]: Abstraction has 3449 states and 5800 transitions. [2022-07-13 17:55:08,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:55:08,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3449 states and 5800 transitions. [2022-07-13 17:55:08,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-13 17:55:08,890 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:55:08,891 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:55:08,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 17:55:08,891 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:55:08,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:55:08,891 INFO L85 PathProgramCache]: Analyzing trace with hash 756911328, now seen corresponding path program 1 times [2022-07-13 17:55:08,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:55:08,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486980523] [2022-07-13 17:55:08,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:55:08,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:55:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:08,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:55:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:08,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:55:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:08,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:55:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:08,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:55:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:08,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:55:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:08,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:55:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:08,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 17:55:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:08,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 17:55:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:08,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 17:55:08,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:08,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 17:55:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:08,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 17:55:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:08,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 17:55:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:08,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 17:55:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:08,959 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:55:08,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:55:08,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486980523] [2022-07-13 17:55:08,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486980523] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:55:08,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:55:08,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:55:08,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711854263] [2022-07-13 17:55:08,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:55:08,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:55:08,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:55:08,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:55:08,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:55:08,961 INFO L87 Difference]: Start difference. First operand 3449 states and 5800 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:55:10,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:55:10,204 INFO L93 Difference]: Finished difference Result 8426 states and 14467 transitions. [2022-07-13 17:55:10,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:55:10,204 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2022-07-13 17:55:10,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:55:10,227 INFO L225 Difference]: With dead ends: 8426 [2022-07-13 17:55:10,227 INFO L226 Difference]: Without dead ends: 5714 [2022-07-13 17:55:10,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:55:10,237 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 1247 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 17:55:10,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1262 Valid, 1248 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 17:55:10,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5714 states. [2022-07-13 17:55:10,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5714 to 5590. [2022-07-13 17:55:10,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5590 states, 4597 states have (on average 1.5999564933652382) internal successors, (7355), 4604 states have internal predecessors, (7355), 965 states have call successors, (965), 23 states have call predecessors, (965), 27 states have return successors, (1082), 964 states have call predecessors, (1082), 964 states have call successors, (1082) [2022-07-13 17:55:10,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5590 states to 5590 states and 9402 transitions. [2022-07-13 17:55:10,572 INFO L78 Accepts]: Start accepts. Automaton has 5590 states and 9402 transitions. Word has length 125 [2022-07-13 17:55:10,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:55:10,573 INFO L495 AbstractCegarLoop]: Abstraction has 5590 states and 9402 transitions. [2022-07-13 17:55:10,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:55:10,573 INFO L276 IsEmpty]: Start isEmpty. Operand 5590 states and 9402 transitions. [2022-07-13 17:55:10,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-13 17:55:10,586 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:55:10,586 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:55:10,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 17:55:10,587 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:55:10,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:55:10,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1547282381, now seen corresponding path program 1 times [2022-07-13 17:55:10,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:55:10,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779439545] [2022-07-13 17:55:10,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:55:10,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:55:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:10,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:55:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:10,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:55:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:10,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:55:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:10,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:55:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:10,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:55:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:10,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:55:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:10,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 17:55:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:10,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:55:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:10,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 17:55:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:10,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 17:55:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:10,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 17:55:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:10,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 17:55:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:10,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 17:55:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:10,665 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:55:10,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:55:10,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779439545] [2022-07-13 17:55:10,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779439545] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:55:10,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:55:10,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:55:10,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574696365] [2022-07-13 17:55:10,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:55:10,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:55:10,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:55:10,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:55:10,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:55:10,667 INFO L87 Difference]: Start difference. First operand 5590 states and 9402 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:55:11,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:55:11,893 INFO L93 Difference]: Finished difference Result 13848 states and 23768 transitions. [2022-07-13 17:55:11,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:55:11,894 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2022-07-13 17:55:11,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:55:11,923 INFO L225 Difference]: With dead ends: 13848 [2022-07-13 17:55:11,923 INFO L226 Difference]: Without dead ends: 9397 [2022-07-13 17:55:11,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:55:11,934 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 1256 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 478 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 17:55:11,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1271 Valid, 1208 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 17:55:11,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9397 states. [2022-07-13 17:55:12,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9397 to 9273. [2022-07-13 17:55:12,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9273 states, 7674 states have (on average 1.5978629137346885) internal successors, (12262), 7681 states have internal predecessors, (12262), 1571 states have call successors, (1571), 23 states have call predecessors, (1571), 27 states have return successors, (1766), 1570 states have call predecessors, (1766), 1570 states have call successors, (1766) [2022-07-13 17:55:12,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9273 states to 9273 states and 15599 transitions. [2022-07-13 17:55:12,422 INFO L78 Accepts]: Start accepts. Automaton has 9273 states and 15599 transitions. Word has length 126 [2022-07-13 17:55:12,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:55:12,423 INFO L495 AbstractCegarLoop]: Abstraction has 9273 states and 15599 transitions. [2022-07-13 17:55:12,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:55:12,423 INFO L276 IsEmpty]: Start isEmpty. Operand 9273 states and 15599 transitions. [2022-07-13 17:55:12,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-13 17:55:12,439 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:55:12,439 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:55:12,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 17:55:12,439 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:55:12,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:55:12,440 INFO L85 PathProgramCache]: Analyzing trace with hash -512727774, now seen corresponding path program 1 times [2022-07-13 17:55:12,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:55:12,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787779542] [2022-07-13 17:55:12,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:55:12,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:55:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:12,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:55:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:12,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:55:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:12,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:55:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:12,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:55:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:12,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:55:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:12,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:55:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:12,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:55:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:12,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 17:55:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:12,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 17:55:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:12,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 17:55:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:12,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 17:55:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:12,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 17:55:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:12,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 17:55:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:12,521 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:55:12,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:55:12,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787779542] [2022-07-13 17:55:12,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787779542] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:55:12,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:55:12,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:55:12,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101881563] [2022-07-13 17:55:12,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:55:12,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:55:12,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:55:12,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:55:12,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:55:12,524 INFO L87 Difference]: Start difference. First operand 9273 states and 15599 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:55:13,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:55:13,838 INFO L93 Difference]: Finished difference Result 24032 states and 41209 transitions. [2022-07-13 17:55:13,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:55:13,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2022-07-13 17:55:13,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:55:13,883 INFO L225 Difference]: With dead ends: 24032 [2022-07-13 17:55:13,883 INFO L226 Difference]: Without dead ends: 16350 [2022-07-13 17:55:13,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:55:13,902 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 1242 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 17:55:13,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1257 Valid, 1228 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 17:55:13,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16350 states. [2022-07-13 17:55:14,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16350 to 16226. [2022-07-13 17:55:14,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16226 states, 13424 states have (on average 1.5890941597139452) internal successors, (21332), 13431 states have internal predecessors, (21332), 2774 states have call successors, (2774), 23 states have call predecessors, (2774), 27 states have return successors, (3113), 2773 states have call predecessors, (3113), 2773 states have call successors, (3113) [2022-07-13 17:55:14,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16226 states to 16226 states and 27219 transitions. [2022-07-13 17:55:14,939 INFO L78 Accepts]: Start accepts. Automaton has 16226 states and 27219 transitions. Word has length 127 [2022-07-13 17:55:14,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:55:14,939 INFO L495 AbstractCegarLoop]: Abstraction has 16226 states and 27219 transitions. [2022-07-13 17:55:14,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:55:14,939 INFO L276 IsEmpty]: Start isEmpty. Operand 16226 states and 27219 transitions. [2022-07-13 17:55:14,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-13 17:55:14,961 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:55:14,961 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:55:14,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 17:55:14,961 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:55:14,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:55:14,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1366896460, now seen corresponding path program 1 times [2022-07-13 17:55:14,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:55:14,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903685918] [2022-07-13 17:55:14,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:55:14,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:55:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:15,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:55:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:15,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:55:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:15,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:55:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:15,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:55:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:15,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:55:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:15,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:55:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:15,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:55:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:15,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 17:55:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:15,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 17:55:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:15,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 17:55:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:15,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 17:55:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:15,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 17:55:15,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:15,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 17:55:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:15,035 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:55:15,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:55:15,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903685918] [2022-07-13 17:55:15,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903685918] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:55:15,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:55:15,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:55:15,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673034784] [2022-07-13 17:55:15,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:55:15,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:55:15,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:55:15,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:55:15,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:55:15,038 INFO L87 Difference]: Start difference. First operand 16226 states and 27219 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:55:17,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:55:17,208 INFO L93 Difference]: Finished difference Result 42998 states and 73606 transitions. [2022-07-13 17:55:17,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:55:17,208 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2022-07-13 17:55:17,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:55:17,293 INFO L225 Difference]: With dead ends: 42998 [2022-07-13 17:55:17,294 INFO L226 Difference]: Without dead ends: 29005 [2022-07-13 17:55:17,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:55:17,326 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 1285 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1300 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:55:17,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1300 Valid, 1193 Invalid, 1388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 17:55:17,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29005 states. [2022-07-13 17:55:18,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29005 to 28881. [2022-07-13 17:55:18,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28881 states, 24040 states have (on average 1.5848169717138103) internal successors, (38099), 24047 states have internal predecessors, (38099), 4813 states have call successors, (4813), 23 states have call predecessors, (4813), 27 states have return successors, (5426), 4812 states have call predecessors, (5426), 4812 states have call successors, (5426) [2022-07-13 17:55:19,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28881 states to 28881 states and 48338 transitions. [2022-07-13 17:55:19,052 INFO L78 Accepts]: Start accepts. Automaton has 28881 states and 48338 transitions. Word has length 128 [2022-07-13 17:55:19,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:55:19,053 INFO L495 AbstractCegarLoop]: Abstraction has 28881 states and 48338 transitions. [2022-07-13 17:55:19,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:55:19,053 INFO L276 IsEmpty]: Start isEmpty. Operand 28881 states and 48338 transitions. [2022-07-13 17:55:19,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-13 17:55:19,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:55:19,077 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:55:19,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 17:55:19,077 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:55:19,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:55:19,078 INFO L85 PathProgramCache]: Analyzing trace with hash 761091524, now seen corresponding path program 1 times [2022-07-13 17:55:19,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:55:19,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813328640] [2022-07-13 17:55:19,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:55:19,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:55:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:19,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:55:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:19,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:55:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:19,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:55:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:19,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:55:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:19,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:55:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:19,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:55:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:19,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 17:55:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:19,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-13 17:55:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:19,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 17:55:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:19,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 17:55:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:19,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 17:55:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:19,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 17:55:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:19,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-13 17:55:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:19,162 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:55:19,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:55:19,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813328640] [2022-07-13 17:55:19,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813328640] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:55:19,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:55:19,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:55:19,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710270853] [2022-07-13 17:55:19,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:55:19,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:55:19,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:55:19,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:55:19,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:55:19,165 INFO L87 Difference]: Start difference. First operand 28881 states and 48338 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:55:22,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:55:22,222 INFO L93 Difference]: Finished difference Result 78760 states and 133970 transitions. [2022-07-13 17:55:22,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:55:22,223 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2022-07-13 17:55:22,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:55:22,379 INFO L225 Difference]: With dead ends: 78760 [2022-07-13 17:55:22,379 INFO L226 Difference]: Without dead ends: 52884 [2022-07-13 17:55:22,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:55:22,434 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 1262 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 17:55:22,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1277 Valid, 1207 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 17:55:22,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52884 states. [2022-07-13 17:55:25,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52884 to 52760. [2022-07-13 17:55:25,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52760 states, 44204 states have (on average 1.5790878653515519) internal successors, (69802), 44211 states have internal predecessors, (69802), 8528 states have call successors, (8528), 23 states have call predecessors, (8528), 27 states have return successors, (9673), 8527 states have call predecessors, (9673), 8527 states have call successors, (9673) [2022-07-13 17:55:26,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52760 states to 52760 states and 88003 transitions. [2022-07-13 17:55:26,209 INFO L78 Accepts]: Start accepts. Automaton has 52760 states and 88003 transitions. Word has length 129 [2022-07-13 17:55:26,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:55:26,209 INFO L495 AbstractCegarLoop]: Abstraction has 52760 states and 88003 transitions. [2022-07-13 17:55:26,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:55:26,210 INFO L276 IsEmpty]: Start isEmpty. Operand 52760 states and 88003 transitions. [2022-07-13 17:55:26,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-13 17:55:26,235 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:55:26,235 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:55:26,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 17:55:26,236 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:55:26,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:55:26,237 INFO L85 PathProgramCache]: Analyzing trace with hash -907484908, now seen corresponding path program 1 times [2022-07-13 17:55:26,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:55:26,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192038940] [2022-07-13 17:55:26,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:55:26,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:55:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:26,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:55:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:26,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:55:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:26,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:55:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:26,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:55:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:26,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:55:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:26,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:55:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:26,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 17:55:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:26,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 17:55:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:26,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 17:55:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:26,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 17:55:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:26,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 17:55:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:26,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 17:55:26,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:26,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 17:55:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:26,298 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:55:26,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:55:26,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192038940] [2022-07-13 17:55:26,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192038940] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:55:26,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:55:26,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:55:26,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802709079] [2022-07-13 17:55:26,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:55:26,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:55:26,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:55:26,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:55:26,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:55:26,301 INFO L87 Difference]: Start difference. First operand 52760 states and 88003 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:55:31,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:55:31,170 INFO L93 Difference]: Finished difference Result 98531 states and 167900 transitions. [2022-07-13 17:55:31,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:55:31,171 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2022-07-13 17:55:31,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:55:31,505 INFO L225 Difference]: With dead ends: 98531 [2022-07-13 17:55:31,505 INFO L226 Difference]: Without dead ends: 98343 [2022-07-13 17:55:31,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:55:31,549 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 1233 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1248 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:55:31,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1248 Valid, 1209 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 17:55:31,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98343 states. [2022-07-13 17:55:36,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98343 to 98219. [2022-07-13 17:55:36,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98219 states, 82864 states have (on average 1.5718406062946515) internal successors, (130249), 82871 states have internal predecessors, (130249), 15327 states have call successors, (15327), 23 states have call predecessors, (15327), 27 states have return successors, (17518), 15326 states have call predecessors, (17518), 15326 states have call successors, (17518) [2022-07-13 17:55:37,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98219 states to 98219 states and 163094 transitions. [2022-07-13 17:55:37,135 INFO L78 Accepts]: Start accepts. Automaton has 98219 states and 163094 transitions. Word has length 130 [2022-07-13 17:55:37,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:55:37,135 INFO L495 AbstractCegarLoop]: Abstraction has 98219 states and 163094 transitions. [2022-07-13 17:55:37,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:55:37,136 INFO L276 IsEmpty]: Start isEmpty. Operand 98219 states and 163094 transitions. [2022-07-13 17:55:37,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-13 17:55:37,165 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:55:37,165 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:55:37,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 17:55:37,166 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:55:37,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:55:37,166 INFO L85 PathProgramCache]: Analyzing trace with hash -819343165, now seen corresponding path program 1 times [2022-07-13 17:55:37,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:55:37,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620952295] [2022-07-13 17:55:37,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:55:37,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:55:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:37,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:55:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:37,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:55:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:37,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:55:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:37,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:55:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:37,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:55:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:37,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:55:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:37,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:55:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:37,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 17:55:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:37,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 17:55:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:37,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 17:55:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:37,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 17:55:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:37,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-13 17:55:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:37,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 17:55:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:55:37,653 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:55:37,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:55:37,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620952295] [2022-07-13 17:55:37,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620952295] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:55:37,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:55:37,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-13 17:55:37,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731838807] [2022-07-13 17:55:37,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:55:37,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 17:55:37,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:55:37,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 17:55:37,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2022-07-13 17:55:37,655 INFO L87 Difference]: Start difference. First operand 98219 states and 163094 transitions. Second operand has 18 states, 16 states have (on average 5.625) internal successors, (90), 12 states have internal predecessors, (90), 6 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-13 17:55:50,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:55:50,916 INFO L93 Difference]: Finished difference Result 196361 states and 337914 transitions. [2022-07-13 17:55:50,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-13 17:55:50,917 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.625) internal successors, (90), 12 states have internal predecessors, (90), 6 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 131 [2022-07-13 17:55:50,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:55:51,797 INFO L225 Difference]: With dead ends: 196361 [2022-07-13 17:55:51,797 INFO L226 Difference]: Without dead ends: 196179 [2022-07-13 17:55:51,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1283 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=872, Invalid=3820, Unknown=0, NotChecked=0, Total=4692 [2022-07-13 17:55:51,889 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 5115 mSDsluCounter, 2777 mSDsCounter, 0 mSdLazyCounter, 8687 mSolverCounterSat, 2270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5115 SdHoareTripleChecker+Valid, 3410 SdHoareTripleChecker+Invalid, 10957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2270 IncrementalHoareTripleChecker+Valid, 8687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:55:51,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5115 Valid, 3410 Invalid, 10957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2270 Valid, 8687 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-07-13 17:55:52,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196179 states. [2022-07-13 17:56:02,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196179 to 195719. [2022-07-13 17:56:02,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195719 states, 165175 states have (on average 1.5725805963372181) internal successors, (259751), 165082 states have internal predecessors, (259751), 30471 states have call successors, (30471), 62 states have call predecessors, (30471), 72 states have return successors, (38133), 30582 states have call predecessors, (38133), 30468 states have call successors, (38133)