./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec1_product16.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_spec1_product16.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8953ac6143780bf628ca2bf650b2a5c9b00061ee3dd80e32fadc01758229df18 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 17:43:33,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 17:43:33,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 17:43:33,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 17:43:33,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 17:43:33,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 17:43:33,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 17:43:33,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 17:43:33,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 17:43:33,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 17:43:33,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 17:43:33,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 17:43:33,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 17:43:33,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 17:43:33,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 17:43:33,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 17:43:33,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 17:43:33,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 17:43:33,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 17:43:33,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 17:43:33,665 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 17:43:33,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 17:43:33,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 17:43:33,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 17:43:33,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 17:43:33,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 17:43:33,674 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 17:43:33,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 17:43:33,676 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 17:43:33,677 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 17:43:33,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 17:43:33,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 17:43:33,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 17:43:33,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 17:43:33,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 17:43:33,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 17:43:33,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 17:43:33,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 17:43:33,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 17:43:33,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 17:43:33,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 17:43:33,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 17:43:33,685 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 17:43:33,713 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 17:43:33,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 17:43:33,714 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 17:43:33,714 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 17:43:33,715 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 17:43:33,715 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 17:43:33,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 17:43:33,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 17:43:33,716 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 17:43:33,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 17:43:33,716 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 17:43:33,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 17:43:33,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 17:43:33,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 17:43:33,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 17:43:33,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 17:43:33,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 17:43:33,717 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 17:43:33,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 17:43:33,718 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 17:43:33,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 17:43:33,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 17:43:33,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 17:43:33,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 17:43:33,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:43:33,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 17:43:33,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 17:43:33,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 17:43:33,720 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 17:43:33,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 17:43:33,721 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 17:43:33,721 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 17:43:33,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 17:43:33,722 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8953ac6143780bf628ca2bf650b2a5c9b00061ee3dd80e32fadc01758229df18 [2022-07-13 17:43:33,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 17:43:33,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 17:43:33,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 17:43:33,971 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 17:43:33,972 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 17:43:33,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec1_product16.cil.c [2022-07-13 17:43:34,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/652a38441/bfbc9d0c20b845c8ab27528949c9703e/FLAG88bb761d1 [2022-07-13 17:43:34,493 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 17:43:34,497 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec1_product16.cil.c [2022-07-13 17:43:34,510 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/652a38441/bfbc9d0c20b845c8ab27528949c9703e/FLAG88bb761d1 [2022-07-13 17:43:34,520 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/652a38441/bfbc9d0c20b845c8ab27528949c9703e [2022-07-13 17:43:34,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 17:43:34,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 17:43:34,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 17:43:34,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 17:43:34,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 17:43:34,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:43:34" (1/1) ... [2022-07-13 17:43:34,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72928219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:43:34, skipping insertion in model container [2022-07-13 17:43:34,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:43:34" (1/1) ... [2022-07-13 17:43:34,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 17:43:34,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 17:43:34,777 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_spec1_product16.cil.c[36116,36129] [2022-07-13 17:43:34,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:43:34,911 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 17:43:34,976 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_spec1_product16.cil.c[36116,36129] [2022-07-13 17:43:35,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:43:35,068 INFO L208 MainTranslator]: Completed translation [2022-07-13 17:43:35,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:43:35 WrapperNode [2022-07-13 17:43:35,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 17:43:35,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 17:43:35,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 17:43:35,070 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 17:43:35,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:43:35" (1/1) ... [2022-07-13 17:43:35,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:43:35" (1/1) ... [2022-07-13 17:43:35,147 INFO L137 Inliner]: procedures = 125, calls = 196, calls flagged for inlining = 56, calls inlined = 51, statements flattened = 980 [2022-07-13 17:43:35,154 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 17:43:35,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 17:43:35,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 17:43:35,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 17:43:35,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:43:35" (1/1) ... [2022-07-13 17:43:35,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:43:35" (1/1) ... [2022-07-13 17:43:35,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:43:35" (1/1) ... [2022-07-13 17:43:35,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:43:35" (1/1) ... [2022-07-13 17:43:35,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:43:35" (1/1) ... [2022-07-13 17:43:35,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:43:35" (1/1) ... [2022-07-13 17:43:35,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:43:35" (1/1) ... [2022-07-13 17:43:35,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 17:43:35,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 17:43:35,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 17:43:35,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 17:43:35,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:43:35" (1/1) ... [2022-07-13 17:43:35,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:43:35,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:43:35,277 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 17:43:35,309 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 17:43:35,333 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-07-13 17:43:35,334 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-07-13 17:43:35,334 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-07-13 17:43:35,334 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-07-13 17:43:35,334 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-13 17:43:35,334 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-13 17:43:35,334 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-13 17:43:35,334 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-13 17:43:35,334 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-13 17:43:35,334 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-13 17:43:35,335 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-07-13 17:43:35,335 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-07-13 17:43:35,335 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-13 17:43:35,335 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-13 17:43:35,335 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-13 17:43:35,335 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-13 17:43:35,335 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-13 17:43:35,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 17:43:35,336 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-13 17:43:35,336 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-13 17:43:35,336 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-13 17:43:35,336 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-13 17:43:35,336 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-13 17:43:35,336 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-13 17:43:35,336 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-13 17:43:35,336 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-13 17:43:35,336 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-07-13 17:43:35,337 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-07-13 17:43:35,337 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-13 17:43:35,337 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-13 17:43:35,337 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-07-13 17:43:35,337 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-07-13 17:43:35,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 17:43:35,337 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-13 17:43:35,338 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-13 17:43:35,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 17:43:35,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 17:43:35,487 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 17:43:35,489 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 17:43:35,931 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 17:43:35,937 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 17:43:35,937 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 17:43:35,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:43:35 BoogieIcfgContainer [2022-07-13 17:43:35,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 17:43:35,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 17:43:35,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 17:43:35,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 17:43:35,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 05:43:34" (1/3) ... [2022-07-13 17:43:35,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec75805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:43:35, skipping insertion in model container [2022-07-13 17:43:35,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:43:35" (2/3) ... [2022-07-13 17:43:35,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec75805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:43:35, skipping insertion in model container [2022-07-13 17:43:35,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:43:35" (3/3) ... [2022-07-13 17:43:35,945 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec1_product16.cil.c [2022-07-13 17:43:35,954 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 17:43:35,954 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 17:43:35,998 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 17:43:36,002 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@33bcd174, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3ce48125 [2022-07-13 17:43:36,003 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 17:43:36,006 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 235 states have (on average 1.5361702127659576) internal successors, (361), 239 states have internal predecessors, (361), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-07-13 17:43:36,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-13 17:43:36,024 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:43:36,025 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:43:36,025 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:43:36,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:43:36,029 INFO L85 PathProgramCache]: Analyzing trace with hash 56806197, now seen corresponding path program 1 times [2022-07-13 17:43:36,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:43:36,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135595692] [2022-07-13 17:43:36,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:43:36,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:43:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:36,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:43:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:36,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:43:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:36,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:43:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:36,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:43:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:36,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:43:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:36,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:43:36,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:36,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 17:43:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:36,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 17:43:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:36,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:43:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:36,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:43:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:36,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 17:43:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:36,430 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 17:43:36,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:43:36,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135595692] [2022-07-13 17:43:36,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135595692] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:43:36,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189346853] [2022-07-13 17:43:36,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:43:36,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:43:36,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:43:36,449 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 17:43:36,450 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 17:43:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:36,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 17:43:36,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:43:36,730 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 17:43:36,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:43:36,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189346853] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:43:36,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:43:36,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-07-13 17:43:36,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438381857] [2022-07-13 17:43:36,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:43:36,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 17:43:36,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:43:36,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 17:43:36,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:43:36,768 INFO L87 Difference]: Start difference. First operand has 298 states, 235 states have (on average 1.5361702127659576) internal successors, (361), 239 states have internal predecessors, (361), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:43:36,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:43:36,805 INFO L93 Difference]: Finished difference Result 442 states and 656 transitions. [2022-07-13 17:43:36,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 17:43:36,807 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 89 [2022-07-13 17:43:36,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:43:36,816 INFO L225 Difference]: With dead ends: 442 [2022-07-13 17:43:36,817 INFO L226 Difference]: Without dead ends: 291 [2022-07-13 17:43:36,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:43:36,823 INFO L413 NwaCegarLoop]: 447 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, 447 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 17:43:36,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:43:36,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-07-13 17:43:36,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2022-07-13 17:43:36,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 229 states have (on average 1.5283842794759825) internal successors, (350), 232 states have internal predecessors, (350), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-07-13 17:43:36,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 439 transitions. [2022-07-13 17:43:36,871 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 439 transitions. Word has length 89 [2022-07-13 17:43:36,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:43:36,872 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 439 transitions. [2022-07-13 17:43:36,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:43:36,872 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 439 transitions. [2022-07-13 17:43:36,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 17:43:36,877 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:43:36,877 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:43:36,895 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 17:43:37,095 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 17:43:37,095 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:43:37,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:43:37,096 INFO L85 PathProgramCache]: Analyzing trace with hash -774067971, now seen corresponding path program 1 times [2022-07-13 17:43:37,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:43:37,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011906672] [2022-07-13 17:43:37,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:43:37,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:43:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:37,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:43:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:37,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:43:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:37,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:43:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:37,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:43:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:37,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:43:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:37,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:43:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:37,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 17:43:37,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:37,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 17:43:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:37,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 17:43:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:37,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 17:43:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:37,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 17:43:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:37,249 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 17:43:37,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:43:37,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011906672] [2022-07-13 17:43:37,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011906672] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:43:37,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599594683] [2022-07-13 17:43:37,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:43:37,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:43:37,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:43:37,266 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 17:43:37,267 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 17:43:37,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:37,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 17:43:37,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:43:37,550 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 17:43:37,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:43:37,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599594683] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:43:37,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:43:37,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-13 17:43:37,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040599763] [2022-07-13 17:43:37,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:43:37,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 17:43:37,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:43:37,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 17:43:37,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:43:37,554 INFO L87 Difference]: Start difference. First operand 291 states and 439 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:43:37,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:43:37,597 INFO L93 Difference]: Finished difference Result 432 states and 637 transitions. [2022-07-13 17:43:37,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 17:43:37,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 90 [2022-07-13 17:43:37,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:43:37,604 INFO L225 Difference]: With dead ends: 432 [2022-07-13 17:43:37,605 INFO L226 Difference]: Without dead ends: 294 [2022-07-13 17:43:37,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:43:37,610 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 1 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 872 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 17:43:37,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 872 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:43:37,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-07-13 17:43:37,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 293. [2022-07-13 17:43:37,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 231 states have (on average 1.5238095238095237) internal successors, (352), 234 states have internal predecessors, (352), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-07-13 17:43:37,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 441 transitions. [2022-07-13 17:43:37,631 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 441 transitions. Word has length 90 [2022-07-13 17:43:37,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:43:37,633 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 441 transitions. [2022-07-13 17:43:37,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:43:37,633 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 441 transitions. [2022-07-13 17:43:37,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-13 17:43:37,642 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:43:37,642 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:43:37,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 17:43:37,860 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 17:43:37,860 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:43:37,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:43:37,861 INFO L85 PathProgramCache]: Analyzing trace with hash 232109862, now seen corresponding path program 1 times [2022-07-13 17:43:37,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:43:37,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534896380] [2022-07-13 17:43:37,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:43:37,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:43:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:37,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:43:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:37,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:43:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:37,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:43:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:37,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:43:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:37,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:43:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:37,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:43:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:38,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 17:43:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:38,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 17:43:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:38,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:43:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:38,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 17:43:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:38,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 17:43:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:38,038 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 17:43:38,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:43:38,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534896380] [2022-07-13 17:43:38,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534896380] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:43:38,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031742533] [2022-07-13 17:43:38,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:43:38,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:43:38,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:43:38,043 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 17:43:38,044 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 17:43:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:38,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 962 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:43:38,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:43:38,251 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 17:43:38,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:43:38,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031742533] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:43:38,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:43:38,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-13 17:43:38,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372142567] [2022-07-13 17:43:38,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:43:38,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 17:43:38,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:43:38,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 17:43:38,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:43:38,254 INFO L87 Difference]: Start difference. First operand 293 states and 441 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:43:38,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:43:38,271 INFO L93 Difference]: Finished difference Result 616 states and 941 transitions. [2022-07-13 17:43:38,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 17:43:38,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 96 [2022-07-13 17:43:38,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:43:38,274 INFO L225 Difference]: With dead ends: 616 [2022-07-13 17:43:38,274 INFO L226 Difference]: Without dead ends: 350 [2022-07-13 17:43:38,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:43:38,276 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 107 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 845 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 17:43:38,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 845 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:43:38,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-07-13 17:43:38,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 342. [2022-07-13 17:43:38,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 269 states have (on average 1.5390334572490707) internal successors, (414), 272 states have internal predecessors, (414), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-07-13 17:43:38,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 525 transitions. [2022-07-13 17:43:38,291 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 525 transitions. Word has length 96 [2022-07-13 17:43:38,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:43:38,292 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 525 transitions. [2022-07-13 17:43:38,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:43:38,292 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 525 transitions. [2022-07-13 17:43:38,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-13 17:43:38,295 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:43:38,295 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:43:38,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 17:43:38,512 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 17:43:38,513 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:43:38,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:43:38,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1191161156, now seen corresponding path program 1 times [2022-07-13 17:43:38,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:43:38,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44738792] [2022-07-13 17:43:38,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:43:38,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:43:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:38,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:43:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:38,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:43:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:38,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:43:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:38,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:43:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:38,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:43:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:38,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:43:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:38,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 17:43:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:38,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 17:43:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:38,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 17:43:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:38,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 17:43:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:38,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 17:43:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:38,629 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 17:43:38,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:43:38,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44738792] [2022-07-13 17:43:38,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44738792] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:43:38,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184300382] [2022-07-13 17:43:38,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:43:38,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:43:38,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:43:38,632 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 17:43:38,633 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 17:43:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:38,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 969 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 17:43:38,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:43:38,876 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 17:43:38,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:43:38,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184300382] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:43:38,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:43:38,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-07-13 17:43:38,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379076186] [2022-07-13 17:43:38,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:43:38,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 17:43:38,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:43:38,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 17:43:38,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:43:38,878 INFO L87 Difference]: Start difference. First operand 342 states and 525 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 17:43:38,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:43:38,917 INFO L93 Difference]: Finished difference Result 675 states and 1040 transitions. [2022-07-13 17:43:38,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:43:38,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2022-07-13 17:43:38,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:43:38,919 INFO L225 Difference]: With dead ends: 675 [2022-07-13 17:43:38,919 INFO L226 Difference]: Without dead ends: 344 [2022-07-13 17:43:38,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:43:38,921 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 125 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1575 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 17:43:38,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1575 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:43:38,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-07-13 17:43:38,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2022-07-13 17:43:38,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 270 states have (on average 1.537037037037037) internal successors, (415), 274 states have internal predecessors, (415), 56 states have call successors, (56), 16 states have call predecessors, (56), 17 states have return successors, (57), 55 states have call predecessors, (57), 55 states have call successors, (57) [2022-07-13 17:43:38,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 528 transitions. [2022-07-13 17:43:38,932 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 528 transitions. Word has length 97 [2022-07-13 17:43:38,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:43:38,933 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 528 transitions. [2022-07-13 17:43:38,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 17:43:38,933 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 528 transitions. [2022-07-13 17:43:38,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-13 17:43:38,935 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:43:38,935 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:43:38,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-13 17:43:39,154 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 17:43:39,154 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:43:39,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:43:39,155 INFO L85 PathProgramCache]: Analyzing trace with hash 77511015, now seen corresponding path program 1 times [2022-07-13 17:43:39,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:43:39,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350243573] [2022-07-13 17:43:39,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:43:39,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:43:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:39,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:43:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:39,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:43:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:39,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:43:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:39,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:43:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:39,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 17:43:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:39,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:43:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:39,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 17:43:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:39,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:43:39,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:39,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:43:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:39,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 17:43:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:39,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 17:43:39,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:39,263 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 17:43:39,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:43:39,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350243573] [2022-07-13 17:43:39,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350243573] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:43:39,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981885970] [2022-07-13 17:43:39,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:43:39,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:43:39,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:43:39,266 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 17:43:39,267 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 17:43:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:39,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 970 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 17:43:39,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:43:39,488 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 17:43:39,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:43:39,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981885970] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:43:39,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:43:39,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-13 17:43:39,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447054586] [2022-07-13 17:43:39,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:43:39,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 17:43:39,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:43:39,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 17:43:39,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:43:39,490 INFO L87 Difference]: Start difference. First operand 344 states and 528 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 17:43:39,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:43:39,534 INFO L93 Difference]: Finished difference Result 677 states and 1045 transitions. [2022-07-13 17:43:39,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:43:39,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 98 [2022-07-13 17:43:39,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:43:39,537 INFO L225 Difference]: With dead ends: 677 [2022-07-13 17:43:39,537 INFO L226 Difference]: Without dead ends: 346 [2022-07-13 17:43:39,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-13 17:43:39,539 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 124 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1564 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 17:43:39,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1564 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:43:39,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-07-13 17:43:39,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2022-07-13 17:43:39,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 271 states have (on average 1.5350553505535056) internal successors, (416), 276 states have internal predecessors, (416), 56 states have call successors, (56), 16 states have call predecessors, (56), 18 states have return successors, (62), 55 states have call predecessors, (62), 55 states have call successors, (62) [2022-07-13 17:43:39,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 534 transitions. [2022-07-13 17:43:39,551 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 534 transitions. Word has length 98 [2022-07-13 17:43:39,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:43:39,551 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 534 transitions. [2022-07-13 17:43:39,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 17:43:39,552 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 534 transitions. [2022-07-13 17:43:39,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-13 17:43:39,553 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:43:39,553 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:43:39,585 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 17:43:39,768 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 17:43:39,768 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:43:39,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:43:39,769 INFO L85 PathProgramCache]: Analyzing trace with hash -807330812, now seen corresponding path program 1 times [2022-07-13 17:43:39,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:43:39,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117771714] [2022-07-13 17:43:39,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:43:39,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:43:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:39,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:43:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:39,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:43:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:39,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:43:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:39,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:43:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:39,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:43:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:39,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-13 17:43:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:39,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:43:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:39,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 17:43:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:39,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 17:43:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:39,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 17:43:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:39,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 17:43:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:39,852 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 17:43:39,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:43:39,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117771714] [2022-07-13 17:43:39,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117771714] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:43:39,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:43:39,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:43:39,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394462144] [2022-07-13 17:43:39,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:43:39,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:43:39,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:43:39,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:43:39,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:43:39,854 INFO L87 Difference]: Start difference. First operand 346 states and 534 transitions. Second operand has 9 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 17:43:41,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:43:41,307 INFO L93 Difference]: Finished difference Result 816 states and 1258 transitions. [2022-07-13 17:43:41,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 17:43:41,308 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 99 [2022-07-13 17:43:41,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:43:41,310 INFO L225 Difference]: With dead ends: 816 [2022-07-13 17:43:41,310 INFO L226 Difference]: Without dead ends: 493 [2022-07-13 17:43:41,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 17:43:41,312 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 1019 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1891 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 2252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 1891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:43:41,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 1369 Invalid, 2252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 1891 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 17:43:41,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-07-13 17:43:41,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 346. [2022-07-13 17:43:41,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 271 states have (on average 1.5350553505535056) internal successors, (416), 276 states have internal predecessors, (416), 56 states have call successors, (56), 16 states have call predecessors, (56), 18 states have return successors, (61), 55 states have call predecessors, (61), 55 states have call successors, (61) [2022-07-13 17:43:41,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 533 transitions. [2022-07-13 17:43:41,329 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 533 transitions. Word has length 99 [2022-07-13 17:43:41,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:43:41,329 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 533 transitions. [2022-07-13 17:43:41,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 17:43:41,330 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 533 transitions. [2022-07-13 17:43:41,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-13 17:43:41,331 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:43:41,331 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:43:41,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 17:43:41,331 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:43:41,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:43:41,332 INFO L85 PathProgramCache]: Analyzing trace with hash -805719347, now seen corresponding path program 2 times [2022-07-13 17:43:41,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:43:41,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904071352] [2022-07-13 17:43:41,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:43:41,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:43:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:41,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:43:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:41,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:43:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:41,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:43:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:41,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:43:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:41,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:43:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:41,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 17:43:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:41,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 17:43:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:41,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 17:43:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:41,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 17:43:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:41,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 17:43:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:41,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 17:43:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:41,399 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 17:43:41,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:43:41,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904071352] [2022-07-13 17:43:41,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904071352] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:43:41,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:43:41,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:43:41,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135741862] [2022-07-13 17:43:41,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:43:41,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:43:41,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:43:41,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:43:41,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:43:41,401 INFO L87 Difference]: Start difference. First operand 346 states and 533 transitions. Second operand has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 17:43:42,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:43:42,559 INFO L93 Difference]: Finished difference Result 818 states and 1261 transitions. [2022-07-13 17:43:42,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 17:43:42,560 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 100 [2022-07-13 17:43:42,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:43:42,562 INFO L225 Difference]: With dead ends: 818 [2022-07-13 17:43:42,563 INFO L226 Difference]: Without dead ends: 495 [2022-07-13 17:43:42,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 17:43:42,564 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 1014 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1901 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 2262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 1901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:43:42,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1031 Valid, 1370 Invalid, 2262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 1901 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 17:43:42,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-07-13 17:43:42,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 348. [2022-07-13 17:43:42,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 272 states have (on average 1.5330882352941178) internal successors, (417), 278 states have internal predecessors, (417), 56 states have call successors, (56), 16 states have call predecessors, (56), 19 states have return successors, (63), 55 states have call predecessors, (63), 55 states have call successors, (63) [2022-07-13 17:43:42,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 536 transitions. [2022-07-13 17:43:42,581 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 536 transitions. Word has length 100 [2022-07-13 17:43:42,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:43:42,582 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 536 transitions. [2022-07-13 17:43:42,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 17:43:42,582 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 536 transitions. [2022-07-13 17:43:42,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 17:43:42,583 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:43:42,583 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:43:42,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 17:43:42,584 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:43:42,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:43:42,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1471237417, now seen corresponding path program 1 times [2022-07-13 17:43:42,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:43:42,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811521723] [2022-07-13 17:43:42,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:43:42,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:43:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:42,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:43:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:42,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:43:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:42,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:43:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:42,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:43:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:42,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:43:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:42,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:43:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:42,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 17:43:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:42,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 17:43:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:42,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:43:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:42,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 17:43:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:42,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 17:43:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:42,692 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 17:43:42,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:43:42,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811521723] [2022-07-13 17:43:42,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811521723] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:43:42,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:43:42,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 17:43:42,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381283216] [2022-07-13 17:43:42,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:43:42,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 17:43:42,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:43:42,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 17:43:42,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:43:42,694 INFO L87 Difference]: Start difference. First operand 348 states and 536 transitions. Second operand has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-13 17:43:44,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:43:44,249 INFO L93 Difference]: Finished difference Result 816 states and 1256 transitions. [2022-07-13 17:43:44,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 17:43:44,249 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 101 [2022-07-13 17:43:44,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:43:44,252 INFO L225 Difference]: With dead ends: 816 [2022-07-13 17:43:44,252 INFO L226 Difference]: Without dead ends: 495 [2022-07-13 17:43:44,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-13 17:43:44,253 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 1126 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3379 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 3796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 3379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:43:44,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 1666 Invalid, 3796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 3379 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 17:43:44,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-07-13 17:43:44,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 348. [2022-07-13 17:43:44,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 272 states have (on average 1.5330882352941178) internal successors, (417), 278 states have internal predecessors, (417), 56 states have call successors, (56), 16 states have call predecessors, (56), 19 states have return successors, (62), 55 states have call predecessors, (62), 55 states have call successors, (62) [2022-07-13 17:43:44,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 535 transitions. [2022-07-13 17:43:44,269 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 535 transitions. Word has length 101 [2022-07-13 17:43:44,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:43:44,269 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 535 transitions. [2022-07-13 17:43:44,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-13 17:43:44,269 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 535 transitions. [2022-07-13 17:43:44,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 17:43:44,271 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:43:44,271 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:43:44,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 17:43:44,271 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:43:44,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:43:44,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1244916972, now seen corresponding path program 2 times [2022-07-13 17:43:44,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:43:44,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809829803] [2022-07-13 17:43:44,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:43:44,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:43:44,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:44,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:43:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:44,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:43:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:44,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:43:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:44,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:43:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:44,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:43:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:44,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:43:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:44,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 17:43:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:44,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:43:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:44,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:43:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:44,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 17:43:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:44,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 17:43:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:44,358 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 17:43:44,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:43:44,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809829803] [2022-07-13 17:43:44,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809829803] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:43:44,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:43:44,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 17:43:44,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298136681] [2022-07-13 17:43:44,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:43:44,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 17:43:44,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:43:44,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 17:43:44,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:43:44,360 INFO L87 Difference]: Start difference. First operand 348 states and 535 transitions. Second operand has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-13 17:43:46,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:43:46,091 INFO L93 Difference]: Finished difference Result 818 states and 1262 transitions. [2022-07-13 17:43:46,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 17:43:46,091 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 102 [2022-07-13 17:43:46,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:43:46,094 INFO L225 Difference]: With dead ends: 818 [2022-07-13 17:43:46,094 INFO L226 Difference]: Without dead ends: 497 [2022-07-13 17:43:46,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-13 17:43:46,096 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 1121 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3412 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 3825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 3412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:43:46,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1121 Valid, 1667 Invalid, 3825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 3412 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 17:43:46,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-07-13 17:43:46,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 350. [2022-07-13 17:43:46,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 273 states have (on average 1.531135531135531) internal successors, (418), 280 states have internal predecessors, (418), 56 states have call successors, (56), 16 states have call predecessors, (56), 20 states have return successors, (67), 55 states have call predecessors, (67), 55 states have call successors, (67) [2022-07-13 17:43:46,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 541 transitions. [2022-07-13 17:43:46,115 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 541 transitions. Word has length 102 [2022-07-13 17:43:46,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:43:46,115 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 541 transitions. [2022-07-13 17:43:46,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-13 17:43:46,116 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 541 transitions. [2022-07-13 17:43:46,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-13 17:43:46,117 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:43:46,117 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:43:46,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 17:43:46,117 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:43:46,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:43:46,118 INFO L85 PathProgramCache]: Analyzing trace with hash -74300082, now seen corresponding path program 1 times [2022-07-13 17:43:46,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:43:46,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439933226] [2022-07-13 17:43:46,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:43:46,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:43:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:46,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:43:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:46,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:43:46,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:46,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:43:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:46,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:43:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:46,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:43:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:46,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:43:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:46,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:43:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:46,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 17:43:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:46,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 17:43:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:46,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 17:43:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:46,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 17:43:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:46,182 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 17:43:46,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:43:46,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439933226] [2022-07-13 17:43:46,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439933226] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:43:46,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867697194] [2022-07-13 17:43:46,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:43:46,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:43:46,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:43:46,184 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 17:43:46,212 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 17:43:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:46,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:43:46,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:43:46,384 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 17:43:46,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 17:43:46,428 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 17:43:46,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867697194] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 17:43:46,428 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 17:43:46,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2022-07-13 17:43:46,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168588982] [2022-07-13 17:43:46,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 17:43:46,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 17:43:46,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:43:46,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 17:43:46,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:43:46,430 INFO L87 Difference]: Start difference. First operand 350 states and 541 transitions. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 17:43:47,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:43:47,871 INFO L93 Difference]: Finished difference Result 987 states and 1590 transitions. [2022-07-13 17:43:47,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 17:43:47,871 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 103 [2022-07-13 17:43:47,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:43:47,876 INFO L225 Difference]: With dead ends: 987 [2022-07-13 17:43:47,876 INFO L226 Difference]: Without dead ends: 849 [2022-07-13 17:43:47,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-07-13 17:43:47,877 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 1324 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 2278 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 2795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 2278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:43:47,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1369 Valid, 1805 Invalid, 2795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 2278 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 17:43:47,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-07-13 17:43:47,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 678. [2022-07-13 17:43:47,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 537 states have (on average 1.5940409683426444) internal successors, (856), 544 states have internal predecessors, (856), 120 states have call successors, (120), 16 states have call predecessors, (120), 20 states have return successors, (141), 119 states have call predecessors, (141), 119 states have call successors, (141) [2022-07-13 17:43:47,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1117 transitions. [2022-07-13 17:43:47,908 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1117 transitions. Word has length 103 [2022-07-13 17:43:47,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:43:47,908 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 1117 transitions. [2022-07-13 17:43:47,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 17:43:47,909 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1117 transitions. [2022-07-13 17:43:47,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-13 17:43:47,911 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:43:47,911 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:43:47,929 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 17:43:48,129 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 17:43:48,129 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:43:48,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:43:48,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1454059765, now seen corresponding path program 1 times [2022-07-13 17:43:48,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:43:48,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101867077] [2022-07-13 17:43:48,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:43:48,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:43:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:48,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:43:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:48,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:43:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:48,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:43:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:48,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:43:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:48,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:43:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:48,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:43:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:48,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 17:43:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:48,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 17:43:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:48,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 17:43:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:48,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 17:43:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:48,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 17:43:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:48,222 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 17:43:48,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:43:48,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101867077] [2022-07-13 17:43:48,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101867077] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:43:48,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:43:48,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:43:48,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916165204] [2022-07-13 17:43:48,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:43:48,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:43:48,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:43:48,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:43:48,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:43:48,224 INFO L87 Difference]: Start difference. First operand 678 states and 1117 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:43:49,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:43:49,210 INFO L93 Difference]: Finished difference Result 1768 states and 2961 transitions. [2022-07-13 17:43:49,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:43:49,210 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2022-07-13 17:43:49,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:43:49,215 INFO L225 Difference]: With dead ends: 1768 [2022-07-13 17:43:49,215 INFO L226 Difference]: Without dead ends: 1158 [2022-07-13 17:43:49,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:43:49,217 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 1010 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 17:43:49,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 1237 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 17:43:49,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2022-07-13 17:43:49,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1003. [2022-07-13 17:43:49,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 798 states have (on average 1.605263157894737) internal successors, (1281), 805 states have internal predecessors, (1281), 184 states have call successors, (184), 16 states have call predecessors, (184), 20 states have return successors, (215), 183 states have call predecessors, (215), 183 states have call successors, (215) [2022-07-13 17:43:49,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1680 transitions. [2022-07-13 17:43:49,256 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1680 transitions. Word has length 109 [2022-07-13 17:43:49,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:43:49,256 INFO L495 AbstractCegarLoop]: Abstraction has 1003 states and 1680 transitions. [2022-07-13 17:43:49,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:43:49,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1680 transitions. [2022-07-13 17:43:49,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-13 17:43:49,260 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:43:49,260 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:43:49,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 17:43:49,261 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:43:49,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:43:49,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1651482476, now seen corresponding path program 1 times [2022-07-13 17:43:49,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:43:49,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863001258] [2022-07-13 17:43:49,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:43:49,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:43:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:49,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:43:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:49,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:43:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:49,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:43:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:49,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:43:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:49,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:43:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:49,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:43:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:49,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:43:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:49,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:43:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:49,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 17:43:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:49,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 17:43:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:49,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 17:43:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:49,316 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 17:43:49,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:43:49,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863001258] [2022-07-13 17:43:49,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863001258] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:43:49,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:43:49,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:43:49,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241615862] [2022-07-13 17:43:49,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:43:49,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:43:49,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:43:49,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:43:49,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:43:49,318 INFO L87 Difference]: Start difference. First operand 1003 states and 1680 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:43:50,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:43:50,327 INFO L93 Difference]: Finished difference Result 2548 states and 4310 transitions. [2022-07-13 17:43:50,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:43:50,328 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2022-07-13 17:43:50,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:43:50,335 INFO L225 Difference]: With dead ends: 2548 [2022-07-13 17:43:50,336 INFO L226 Difference]: Without dead ends: 1666 [2022-07-13 17:43:50,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:43:50,339 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 1008 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 17:43:50,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 1221 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 17:43:50,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2022-07-13 17:43:50,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1511. [2022-07-13 17:43:50,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1211 states have (on average 1.611890999174236) internal successors, (1952), 1218 states have internal predecessors, (1952), 279 states have call successors, (279), 16 states have call predecessors, (279), 20 states have return successors, (310), 278 states have call predecessors, (310), 278 states have call successors, (310) [2022-07-13 17:43:50,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 2541 transitions. [2022-07-13 17:43:50,396 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 2541 transitions. Word has length 110 [2022-07-13 17:43:50,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:43:50,396 INFO L495 AbstractCegarLoop]: Abstraction has 1511 states and 2541 transitions. [2022-07-13 17:43:50,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:43:50,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 2541 transitions. [2022-07-13 17:43:50,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-13 17:43:50,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:43:50,401 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:43:50,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 17:43:50,402 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:43:50,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:43:50,402 INFO L85 PathProgramCache]: Analyzing trace with hash 225800205, now seen corresponding path program 1 times [2022-07-13 17:43:50,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:43:50,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331593774] [2022-07-13 17:43:50,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:43:50,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:43:50,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:50,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:43:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:50,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:43:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:50,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:43:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:50,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:43:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:50,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:43:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:50,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:43:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:50,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 17:43:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:50,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:43:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:50,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 17:43:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:50,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 17:43:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:50,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 17:43:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:50,470 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 17:43:50,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:43:50,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331593774] [2022-07-13 17:43:50,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331593774] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:43:50,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:43:50,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:43:50,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43564900] [2022-07-13 17:43:50,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:43:50,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:43:50,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:43:50,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:43:50,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:43:50,472 INFO L87 Difference]: Start difference. First operand 1511 states and 2541 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:43:51,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:43:51,468 INFO L93 Difference]: Finished difference Result 3700 states and 6319 transitions. [2022-07-13 17:43:51,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:43:51,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2022-07-13 17:43:51,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:43:51,479 INFO L225 Difference]: With dead ends: 3700 [2022-07-13 17:43:51,479 INFO L226 Difference]: Without dead ends: 2435 [2022-07-13 17:43:51,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:43:51,483 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 1006 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 17:43:51,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 1216 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 17:43:51,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2435 states. [2022-07-13 17:43:51,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2435 to 2280. [2022-07-13 17:43:51,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2280 states, 1857 states have (on average 1.617124394184168) internal successors, (3003), 1864 states have internal predecessors, (3003), 402 states have call successors, (402), 16 states have call predecessors, (402), 20 states have return successors, (449), 401 states have call predecessors, (449), 401 states have call successors, (449) [2022-07-13 17:43:51,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 3854 transitions. [2022-07-13 17:43:51,587 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 3854 transitions. Word has length 111 [2022-07-13 17:43:51,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:43:51,587 INFO L495 AbstractCegarLoop]: Abstraction has 2280 states and 3854 transitions. [2022-07-13 17:43:51,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:43:51,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 3854 transitions. [2022-07-13 17:43:51,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-13 17:43:51,593 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:43:51,594 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:43:51,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 17:43:51,594 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:43:51,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:43:51,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1877105493, now seen corresponding path program 1 times [2022-07-13 17:43:51,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:43:51,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637753302] [2022-07-13 17:43:51,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:43:51,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:43:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:51,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:43:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:51,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:43:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:51,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:43:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:51,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:43:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:51,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:43:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:51,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:43:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:51,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:43:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:51,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 17:43:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:51,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 17:43:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:51,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 17:43:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:51,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 17:43:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:51,649 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 17:43:51,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:43:51,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637753302] [2022-07-13 17:43:51,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637753302] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:43:51,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:43:51,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:43:51,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177205084] [2022-07-13 17:43:51,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:43:51,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:43:51,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:43:51,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:43:51,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:43:51,650 INFO L87 Difference]: Start difference. First operand 2280 states and 3854 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:43:52,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:43:52,671 INFO L93 Difference]: Finished difference Result 5494 states and 9453 transitions. [2022-07-13 17:43:52,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:43:52,672 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2022-07-13 17:43:52,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:43:52,686 INFO L225 Difference]: With dead ends: 5494 [2022-07-13 17:43:52,687 INFO L226 Difference]: Without dead ends: 3664 [2022-07-13 17:43:52,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:43:52,692 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 1004 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 17:43:52,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1019 Valid, 1216 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 17:43:52,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3664 states. [2022-07-13 17:43:52,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3664 to 3509. [2022-07-13 17:43:52,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3509 states, 2907 states have (on average 1.6202270381836945) internal successors, (4710), 2914 states have internal predecessors, (4710), 581 states have call successors, (581), 16 states have call predecessors, (581), 20 states have return successors, (654), 580 states have call predecessors, (654), 580 states have call successors, (654) [2022-07-13 17:43:52,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3509 states to 3509 states and 5945 transitions. [2022-07-13 17:43:52,875 INFO L78 Accepts]: Start accepts. Automaton has 3509 states and 5945 transitions. Word has length 112 [2022-07-13 17:43:52,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:43:52,875 INFO L495 AbstractCegarLoop]: Abstraction has 3509 states and 5945 transitions. [2022-07-13 17:43:52,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:43:52,875 INFO L276 IsEmpty]: Start isEmpty. Operand 3509 states and 5945 transitions. [2022-07-13 17:43:52,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 17:43:52,883 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:43:52,883 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:43:52,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 17:43:52,883 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:43:52,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:43:52,883 INFO L85 PathProgramCache]: Analyzing trace with hash 463786281, now seen corresponding path program 1 times [2022-07-13 17:43:52,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:43:52,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924807310] [2022-07-13 17:43:52,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:43:52,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:43:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:52,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:43:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:52,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:43:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:52,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:43:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:52,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:43:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:52,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:43:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:52,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:43:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:52,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 17:43:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:52,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 17:43:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:52,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 17:43:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:52,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 17:43:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:52,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 17:43:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:52,948 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 17:43:52,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:43:52,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924807310] [2022-07-13 17:43:52,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924807310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:43:52,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:43:52,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:43:52,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762559396] [2022-07-13 17:43:52,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:43:52,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:43:52,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:43:52,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:43:52,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:43:52,950 INFO L87 Difference]: Start difference. First operand 3509 states and 5945 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:43:54,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:43:54,039 INFO L93 Difference]: Finished difference Result 8442 states and 14600 transitions. [2022-07-13 17:43:54,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:43:54,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 113 [2022-07-13 17:43:54,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:43:54,062 INFO L225 Difference]: With dead ends: 8442 [2022-07-13 17:43:54,063 INFO L226 Difference]: Without dead ends: 5695 [2022-07-13 17:43:54,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:43:54,071 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 1002 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 17:43:54,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 1222 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 17:43:54,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5695 states. [2022-07-13 17:43:54,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5695 to 5540. [2022-07-13 17:43:54,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5540 states, 4562 states have (on average 1.6137658921525646) internal successors, (7362), 4569 states have internal predecessors, (7362), 957 states have call successors, (957), 16 states have call predecessors, (957), 20 states have return successors, (1074), 956 states have call predecessors, (1074), 956 states have call successors, (1074) [2022-07-13 17:43:54,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5540 states to 5540 states and 9393 transitions. [2022-07-13 17:43:54,330 INFO L78 Accepts]: Start accepts. Automaton has 5540 states and 9393 transitions. Word has length 113 [2022-07-13 17:43:54,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:43:54,331 INFO L495 AbstractCegarLoop]: Abstraction has 5540 states and 9393 transitions. [2022-07-13 17:43:54,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:43:54,331 INFO L276 IsEmpty]: Start isEmpty. Operand 5540 states and 9393 transitions. [2022-07-13 17:43:54,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-13 17:43:54,341 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:43:54,341 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:43:54,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 17:43:54,342 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:43:54,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:43:54,342 INFO L85 PathProgramCache]: Analyzing trace with hash 397519417, now seen corresponding path program 1 times [2022-07-13 17:43:54,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:43:54,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368827217] [2022-07-13 17:43:54,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:43:54,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:43:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:54,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:43:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:54,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:43:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:54,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:43:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:54,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:43:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:54,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:43:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:54,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:43:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:54,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 17:43:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:54,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:43:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:54,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 17:43:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:54,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 17:43:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:54,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 17:43:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:54,412 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 17:43:54,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:43:54,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368827217] [2022-07-13 17:43:54,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368827217] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:43:54,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:43:54,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:43:54,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46125231] [2022-07-13 17:43:54,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:43:54,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:43:54,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:43:54,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:43:54,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:43:54,415 INFO L87 Difference]: Start difference. First operand 5540 states and 9393 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:43:55,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:43:55,627 INFO L93 Difference]: Finished difference Result 13779 states and 23821 transitions. [2022-07-13 17:43:55,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:43:55,628 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 114 [2022-07-13 17:43:55,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:43:55,664 INFO L225 Difference]: With dead ends: 13779 [2022-07-13 17:43:55,664 INFO L226 Difference]: Without dead ends: 9378 [2022-07-13 17:43:55,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:43:55,677 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 1000 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 17:43:55,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 1222 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 17:43:55,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9378 states. [2022-07-13 17:43:56,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9378 to 9223. [2022-07-13 17:43:56,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9223 states, 7639 states have (on average 1.6112056551904699) internal successors, (12308), 7646 states have internal predecessors, (12308), 1563 states have call successors, (1563), 16 states have call predecessors, (1563), 20 states have return successors, (1758), 1562 states have call predecessors, (1758), 1562 states have call successors, (1758) [2022-07-13 17:43:56,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9223 states to 9223 states and 15629 transitions. [2022-07-13 17:43:56,065 INFO L78 Accepts]: Start accepts. Automaton has 9223 states and 15629 transitions. Word has length 114 [2022-07-13 17:43:56,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:43:56,066 INFO L495 AbstractCegarLoop]: Abstraction has 9223 states and 15629 transitions. [2022-07-13 17:43:56,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:43:56,066 INFO L276 IsEmpty]: Start isEmpty. Operand 9223 states and 15629 transitions. [2022-07-13 17:43:56,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-13 17:43:56,078 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:43:56,078 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:43:56,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 17:43:56,079 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:43:56,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:43:56,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1530809481, now seen corresponding path program 1 times [2022-07-13 17:43:56,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:43:56,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602045659] [2022-07-13 17:43:56,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:43:56,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:43:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:56,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:43:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:56,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:43:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:56,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:43:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:56,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:43:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:56,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:43:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:56,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:43:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:56,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:43:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:56,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 17:43:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:56,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 17:43:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:56,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 17:43:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:56,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 17:43:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:56,133 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 17:43:56,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:43:56,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602045659] [2022-07-13 17:43:56,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602045659] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:43:56,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:43:56,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:43:56,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281276769] [2022-07-13 17:43:56,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:43:56,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:43:56,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:43:56,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:43:56,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:43:56,135 INFO L87 Difference]: Start difference. First operand 9223 states and 15629 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:43:57,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:43:57,471 INFO L93 Difference]: Finished difference Result 23963 states and 41367 transitions. [2022-07-13 17:43:57,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:43:57,471 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 115 [2022-07-13 17:43:57,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:43:57,518 INFO L225 Difference]: With dead ends: 23963 [2022-07-13 17:43:57,518 INFO L226 Difference]: Without dead ends: 16331 [2022-07-13 17:43:57,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:43:57,540 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 998 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 17:43:57,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 1270 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 17:43:57,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16331 states. [2022-07-13 17:43:58,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16331 to 16176. [2022-07-13 17:43:58,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16176 states, 13389 states have (on average 1.6020613936813803) internal successors, (21450), 13396 states have internal predecessors, (21450), 2766 states have call successors, (2766), 16 states have call predecessors, (2766), 20 states have return successors, (3105), 2765 states have call predecessors, (3105), 2765 states have call successors, (3105) [2022-07-13 17:43:58,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16176 states to 16176 states and 27321 transitions. [2022-07-13 17:43:58,322 INFO L78 Accepts]: Start accepts. Automaton has 16176 states and 27321 transitions. Word has length 115 [2022-07-13 17:43:58,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:43:58,323 INFO L495 AbstractCegarLoop]: Abstraction has 16176 states and 27321 transitions. [2022-07-13 17:43:58,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:43:58,323 INFO L276 IsEmpty]: Start isEmpty. Operand 16176 states and 27321 transitions. [2022-07-13 17:43:58,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-13 17:43:58,345 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:43:58,345 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:43:58,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 17:43:58,346 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:43:58,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:43:58,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1035195930, now seen corresponding path program 1 times [2022-07-13 17:43:58,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:43:58,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682153976] [2022-07-13 17:43:58,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:43:58,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:43:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:58,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:43:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:58,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:43:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:58,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:43:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:58,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:43:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:58,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:43:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:58,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:43:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:58,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:43:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:58,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 17:43:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:58,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 17:43:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:58,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 17:43:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:58,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-13 17:43:58,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:43:58,419 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 17:43:58,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:43:58,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682153976] [2022-07-13 17:43:58,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682153976] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:43:58,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:43:58,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:43:58,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240568493] [2022-07-13 17:43:58,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:43:58,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:43:58,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:43:58,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:43:58,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:43:58,421 INFO L87 Difference]: Start difference. First operand 16176 states and 27321 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:44:00,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:44:00,152 INFO L93 Difference]: Finished difference Result 42929 states and 73966 transitions. [2022-07-13 17:44:00,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:44:00,153 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 116 [2022-07-13 17:44:00,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:44:00,242 INFO L225 Difference]: With dead ends: 42929 [2022-07-13 17:44:00,243 INFO L226 Difference]: Without dead ends: 28986 [2022-07-13 17:44:00,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:44:00,270 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 996 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 17:44:00,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 1217 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 17:44:00,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28986 states. [2022-07-13 17:44:01,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28986 to 28831. [2022-07-13 17:44:01,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28831 states, 24005 states have (on average 1.597750468652364) internal successors, (38354), 24012 states have internal predecessors, (38354), 4805 states have call successors, (4805), 16 states have call predecessors, (4805), 20 states have return successors, (5418), 4804 states have call predecessors, (5418), 4804 states have call successors, (5418) [2022-07-13 17:44:01,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28831 states to 28831 states and 48577 transitions. [2022-07-13 17:44:01,743 INFO L78 Accepts]: Start accepts. Automaton has 28831 states and 48577 transitions. Word has length 116 [2022-07-13 17:44:01,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:44:01,743 INFO L495 AbstractCegarLoop]: Abstraction has 28831 states and 48577 transitions. [2022-07-13 17:44:01,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:44:01,744 INFO L276 IsEmpty]: Start isEmpty. Operand 28831 states and 48577 transitions. [2022-07-13 17:44:01,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-13 17:44:01,760 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:44:01,760 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:44:01,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 17:44:01,761 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:44:01,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:44:01,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1615427271, now seen corresponding path program 1 times [2022-07-13 17:44:01,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:44:01,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431914118] [2022-07-13 17:44:01,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:44:01,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:44:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:01,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:44:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:01,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:44:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:01,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:44:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:01,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:44:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:01,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:44:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:01,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:44:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:01,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 17:44:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:01,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-13 17:44:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:01,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 17:44:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:01,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 17:44:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:01,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 17:44:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:01,826 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 17:44:01,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:44:01,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431914118] [2022-07-13 17:44:01,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431914118] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:44:01,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:44:01,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:44:01,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523637089] [2022-07-13 17:44:01,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:44:01,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:44:01,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:44:01,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:44:01,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:44:01,829 INFO L87 Difference]: Start difference. First operand 28831 states and 48577 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:44:04,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:44:04,137 INFO L93 Difference]: Finished difference Result 78691 states and 134725 transitions. [2022-07-13 17:44:04,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:44:04,137 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 117 [2022-07-13 17:44:04,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:44:04,325 INFO L225 Difference]: With dead ends: 78691 [2022-07-13 17:44:04,326 INFO L226 Difference]: Without dead ends: 52865 [2022-07-13 17:44:04,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:44:04,423 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 994 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 17:44:04,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1009 Valid, 1222 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 17:44:04,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52865 states. [2022-07-13 17:44:06,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52865 to 52710. [2022-07-13 17:44:06,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52710 states, 44169 states have (on average 1.5921347551450111) internal successors, (70323), 44176 states have internal predecessors, (70323), 8520 states have call successors, (8520), 16 states have call predecessors, (8520), 20 states have return successors, (9665), 8519 states have call predecessors, (9665), 8519 states have call successors, (9665) [2022-07-13 17:44:07,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52710 states to 52710 states and 88508 transitions. [2022-07-13 17:44:07,039 INFO L78 Accepts]: Start accepts. Automaton has 52710 states and 88508 transitions. Word has length 117 [2022-07-13 17:44:07,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:44:07,039 INFO L495 AbstractCegarLoop]: Abstraction has 52710 states and 88508 transitions. [2022-07-13 17:44:07,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:44:07,040 INFO L276 IsEmpty]: Start isEmpty. Operand 52710 states and 88508 transitions. [2022-07-13 17:44:07,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-13 17:44:07,056 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:44:07,056 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:44:07,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 17:44:07,057 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:44:07,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:44:07,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1383712678, now seen corresponding path program 1 times [2022-07-13 17:44:07,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:44:07,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102513051] [2022-07-13 17:44:07,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:44:07,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:44:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:07,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:44:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:07,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:44:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:07,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:44:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:07,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:44:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:07,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:44:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:07,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:44:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:07,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 17:44:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:07,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 17:44:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:07,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 17:44:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:07,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 17:44:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:07,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 17:44:07,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:07,127 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 17:44:07,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:44:07,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102513051] [2022-07-13 17:44:07,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102513051] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:44:07,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:44:07,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:44:07,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224707065] [2022-07-13 17:44:07,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:44:07,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:44:07,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:44:07,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:44:07,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:44:07,129 INFO L87 Difference]: Start difference. First operand 52710 states and 88508 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:44:10,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:44:10,778 INFO L93 Difference]: Finished difference Result 98462 states and 168912 transitions. [2022-07-13 17:44:10,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:44:10,779 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 118 [2022-07-13 17:44:10,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:44:11,208 INFO L225 Difference]: With dead ends: 98462 [2022-07-13 17:44:11,209 INFO L226 Difference]: Without dead ends: 98324 [2022-07-13 17:44:11,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:44:11,241 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 992 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 17:44:11,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1007 Valid, 1219 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 17:44:11,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98324 states. [2022-07-13 17:44:15,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98324 to 98169. [2022-07-13 17:44:15,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98169 states, 82829 states have (on average 1.5851090801530865) internal successors, (131293), 82836 states have internal predecessors, (131293), 15319 states have call successors, (15319), 16 states have call predecessors, (15319), 20 states have return successors, (17510), 15318 states have call predecessors, (17510), 15318 states have call successors, (17510) [2022-07-13 17:44:15,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98169 states to 98169 states and 164122 transitions. [2022-07-13 17:44:15,495 INFO L78 Accepts]: Start accepts. Automaton has 98169 states and 164122 transitions. Word has length 118 [2022-07-13 17:44:15,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:44:15,495 INFO L495 AbstractCegarLoop]: Abstraction has 98169 states and 164122 transitions. [2022-07-13 17:44:15,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:44:15,496 INFO L276 IsEmpty]: Start isEmpty. Operand 98169 states and 164122 transitions. [2022-07-13 17:44:15,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-13 17:44:15,515 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:44:15,516 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:44:15,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 17:44:15,516 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:44:15,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:44:15,516 INFO L85 PathProgramCache]: Analyzing trace with hash -548289320, now seen corresponding path program 1 times [2022-07-13 17:44:15,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:44:15,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082244584] [2022-07-13 17:44:15,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:44:15,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:44:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:15,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:44:15,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:15,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:44:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:15,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:44:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:15,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:44:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:15,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:44:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:15,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:44:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:15,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:44:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:15,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 17:44:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:15,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 17:44:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:15,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 17:44:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:15,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 17:44:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:15,644 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 17:44:15,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:44:15,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082244584] [2022-07-13 17:44:15,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082244584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:44:15,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:44:15,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-13 17:44:15,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891248132] [2022-07-13 17:44:15,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:44:15,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 17:44:15,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:44:15,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 17:44:15,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2022-07-13 17:44:15,646 INFO L87 Difference]: Start difference. First operand 98169 states and 164122 transitions. Second operand has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-13 17:44:27,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:44:27,975 INFO L93 Difference]: Finished difference Result 196653 states and 340617 transitions. [2022-07-13 17:44:27,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-13 17:44:27,976 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 119 [2022-07-13 17:44:27,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:44:28,927 INFO L225 Difference]: With dead ends: 196653 [2022-07-13 17:44:28,927 INFO L226 Difference]: Without dead ends: 196521 [2022-07-13 17:44:29,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1269 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=822, Invalid=3600, Unknown=0, NotChecked=0, Total=4422 [2022-07-13 17:44:29,017 INFO L413 NwaCegarLoop]: 797 mSDtfsCounter, 4549 mSDsluCounter, 2419 mSDsCounter, 0 mSdLazyCounter, 9653 mSolverCounterSat, 2433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4549 SdHoareTripleChecker+Valid, 3216 SdHoareTripleChecker+Invalid, 12086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2433 IncrementalHoareTripleChecker+Valid, 9653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:44:29,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4549 Valid, 3216 Invalid, 12086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2433 Valid, 9653 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-13 17:44:29,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196521 states. [2022-07-13 17:44:37,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196521 to 195509. [2022-07-13 17:44:37,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195509 states, 165029 states have (on average 1.585909143241491) internal successors, (261721), 164932 states have internal predecessors, (261721), 30430 states have call successors, (30430), 41 states have call predecessors, (30430), 49 states have return successors, (38087), 30541 states have call predecessors, (38087), 30427 states have call successors, (38087) [2022-07-13 17:44:38,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195509 states to 195509 states and 330238 transitions. [2022-07-13 17:44:38,405 INFO L78 Accepts]: Start accepts. Automaton has 195509 states and 330238 transitions. Word has length 119 [2022-07-13 17:44:38,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:44:38,406 INFO L495 AbstractCegarLoop]: Abstraction has 195509 states and 330238 transitions. [2022-07-13 17:44:38,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-13 17:44:38,406 INFO L276 IsEmpty]: Start isEmpty. Operand 195509 states and 330238 transitions. [2022-07-13 17:44:38,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-13 17:44:38,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:44:38,438 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:44:38,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 17:44:38,439 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:44:38,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:44:38,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1574323709, now seen corresponding path program 1 times [2022-07-13 17:44:38,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:44:38,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182937992] [2022-07-13 17:44:38,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:44:38,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:44:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:38,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:44:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:38,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:44:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:38,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:44:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:38,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:44:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:38,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:44:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:38,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:44:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:38,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:44:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:38,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 17:44:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:38,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 17:44:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:38,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 17:44:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:38,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 17:44:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:38,538 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 17:44:38,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:44:38,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182937992] [2022-07-13 17:44:38,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182937992] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:44:38,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:44:38,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 17:44:38,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700604927] [2022-07-13 17:44:38,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:44:38,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 17:44:38,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:44:38,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 17:44:38,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:44:38,540 INFO L87 Difference]: Start difference. First operand 195509 states and 330238 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11)