./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec9_product16.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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_spec9_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 47500ba035fb95802358be3af8dbcb0499051de1fc18562b910c6b7689271057 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 00:56:42,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 00:56:42,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 00:56:42,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 00:56:42,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 00:56:42,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 00:56:42,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 00:56:42,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 00:56:42,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 00:56:42,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 00:56:42,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 00:56:42,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 00:56:42,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 00:56:42,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 00:56:42,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 00:56:42,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 00:56:42,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 00:56:42,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 00:56:42,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 00:56:42,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 00:56:42,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 00:56:42,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 00:56:42,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 00:56:42,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 00:56:42,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 00:56:42,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 00:56:42,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 00:56:42,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 00:56:42,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 00:56:42,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 00:56:42,571 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 00:56:42,572 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 00:56:42,573 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 00:56:42,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 00:56:42,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 00:56:42,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 00:56:42,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 00:56:42,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 00:56:42,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 00:56:42,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 00:56:42,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 00:56:42,577 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 00:56:42,601 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 00:56:42,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 00:56:42,602 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 00:56:42,602 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 00:56:42,603 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 00:56:42,603 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 00:56:42,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 00:56:42,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 00:56:42,604 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 00:56:42,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 00:56:42,605 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 00:56:42,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 00:56:42,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 00:56:42,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 00:56:42,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 00:56:42,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 00:56:42,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 00:56:42,606 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 00:56:42,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 00:56:42,607 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 00:56:42,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 00:56:42,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 00:56:42,608 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 00:56:42,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 00:56:42,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 00:56:42,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 00:56:42,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 00:56:42,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 00:56:42,609 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 00:56:42,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 00:56:42,609 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 00:56:42,610 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 00:56:42,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 00:56:42,610 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 00:56:42,610 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47500ba035fb95802358be3af8dbcb0499051de1fc18562b910c6b7689271057 [2021-12-16 00:56:42,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 00:56:42,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 00:56:42,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 00:56:42,895 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 00:56:42,896 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 00:56:42,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec9_product16.cil.c [2021-12-16 00:56:42,954 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e5d82df9/886f6a814c7a4d8fb7bd6aed6a921d61/FLAG3c4081e60 [2021-12-16 00:56:43,452 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 00:56:43,453 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec9_product16.cil.c [2021-12-16 00:56:43,492 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e5d82df9/886f6a814c7a4d8fb7bd6aed6a921d61/FLAG3c4081e60 [2021-12-16 00:56:43,977 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e5d82df9/886f6a814c7a4d8fb7bd6aed6a921d61 [2021-12-16 00:56:43,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 00:56:43,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 00:56:43,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 00:56:43,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 00:56:43,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 00:56:43,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:56:43" (1/1) ... [2021-12-16 00:56:43,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b575c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:56:43, skipping insertion in model container [2021-12-16 00:56:43,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:56:43" (1/1) ... [2021-12-16 00:56:43,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 00:56:44,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 00:56:44,397 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_spec9_product16.cil.c[33283,33296] [2021-12-16 00:56:44,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 00:56:44,489 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 00:56:44,561 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_spec9_product16.cil.c[33283,33296] [2021-12-16 00:56:44,587 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 00:56:44,616 INFO L208 MainTranslator]: Completed translation [2021-12-16 00:56:44,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:56:44 WrapperNode [2021-12-16 00:56:44,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 00:56:44,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 00:56:44,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 00:56:44,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 00:56:44,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:56:44" (1/1) ... [2021-12-16 00:56:44,656 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:56:44" (1/1) ... [2021-12-16 00:56:44,739 INFO L137 Inliner]: procedures = 126, calls = 201, calls flagged for inlining = 57, calls inlined = 52, statements flattened = 994 [2021-12-16 00:56:44,741 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 00:56:44,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 00:56:44,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 00:56:44,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 00:56:44,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:56:44" (1/1) ... [2021-12-16 00:56:44,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:56:44" (1/1) ... [2021-12-16 00:56:44,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:56:44" (1/1) ... [2021-12-16 00:56:44,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:56:44" (1/1) ... [2021-12-16 00:56:44,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:56:44" (1/1) ... [2021-12-16 00:56:44,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:56:44" (1/1) ... [2021-12-16 00:56:44,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:56:44" (1/1) ... [2021-12-16 00:56:44,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 00:56:44,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 00:56:44,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 00:56:44,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 00:56:44,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:56:44" (1/1) ... [2021-12-16 00:56:44,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 00:56:44,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:56:44,853 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) [2021-12-16 00:56:44,862 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 [2021-12-16 00:56:44,894 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-16 00:56:44,894 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-16 00:56:44,894 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-16 00:56:44,894 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-16 00:56:44,894 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-16 00:56:44,895 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-16 00:56:44,895 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-16 00:56:44,895 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-16 00:56:44,895 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-16 00:56:44,895 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-16 00:56:44,895 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-16 00:56:44,895 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-16 00:56:44,896 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-16 00:56:44,896 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-16 00:56:44,896 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-16 00:56:44,896 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-16 00:56:44,896 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-16 00:56:44,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 00:56:44,896 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-16 00:56:44,897 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-16 00:56:44,897 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-16 00:56:44,897 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-16 00:56:44,897 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-16 00:56:44,897 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-16 00:56:44,897 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-16 00:56:44,897 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-16 00:56:44,898 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-16 00:56:44,898 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-16 00:56:44,898 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-16 00:56:44,898 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-16 00:56:44,898 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-16 00:56:44,898 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-16 00:56:44,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 00:56:44,899 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-16 00:56:44,899 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-16 00:56:44,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 00:56:44,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 00:56:45,132 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 00:56:45,133 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 00:56:45,690 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 00:56:45,705 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 00:56:45,705 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 00:56:45,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:56:45 BoogieIcfgContainer [2021-12-16 00:56:45,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 00:56:45,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 00:56:45,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 00:56:45,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 00:56:45,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:56:43" (1/3) ... [2021-12-16 00:56:45,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9a30d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:56:45, skipping insertion in model container [2021-12-16 00:56:45,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:56:44" (2/3) ... [2021-12-16 00:56:45,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9a30d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:56:45, skipping insertion in model container [2021-12-16 00:56:45,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:56:45" (3/3) ... [2021-12-16 00:56:45,717 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec9_product16.cil.c [2021-12-16 00:56:45,721 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 00:56:45,722 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 00:56:45,774 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 00:56:45,779 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 00:56:45,779 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 00:56:45,815 INFO L276 IsEmpty]: Start isEmpty. Operand has 299 states, 236 states have (on average 1.5338983050847457) internal successors, (362), 240 states have internal predecessors, (362), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-12-16 00:56:45,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-16 00:56:45,839 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:56:45,840 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:56:45,841 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:56:45,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:56:45,846 INFO L85 PathProgramCache]: Analyzing trace with hash -806898450, now seen corresponding path program 1 times [2021-12-16 00:56:45,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:56:45,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477490172] [2021-12-16 00:56:45,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:56:45,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:56:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:46,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:56:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:46,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:56:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:46,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:56:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:46,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 00:56:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:46,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 00:56:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:46,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 00:56:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:46,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 00:56:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:46,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-16 00:56:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:46,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-16 00:56:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:46,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 00:56:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:46,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 00:56:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:46,383 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-16 00:56:46,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:56:46,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477490172] [2021-12-16 00:56:46,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477490172] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:56:46,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416113654] [2021-12-16 00:56:46,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:56:46,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:56:46,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:56:46,391 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) [2021-12-16 00:56:46,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 00:56:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:46,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-16 00:56:46,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:56:46,952 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-16 00:56:46,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:56:46,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416113654] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:56:46,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:56:46,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-16 00:56:46,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839414256] [2021-12-16 00:56:46,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:56:46,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 00:56:46,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:56:46,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 00:56:46,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:56:46,985 INFO L87 Difference]: Start difference. First operand has 299 states, 236 states have (on average 1.5338983050847457) internal successors, (362), 240 states have internal predecessors, (362), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-16 00:56:47,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:56:47,063 INFO L93 Difference]: Finished difference Result 444 states and 658 transitions. [2021-12-16 00:56:47,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 00:56:47,066 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 [2021-12-16 00:56:47,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:56:47,084 INFO L225 Difference]: With dead ends: 444 [2021-12-16 00:56:47,087 INFO L226 Difference]: Without dead ends: 292 [2021-12-16 00:56:47,096 INFO L932 BasicCegarLoop]: 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 [2021-12-16 00:56:47,107 INFO L933 BasicCegarLoop]: 448 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:56:47,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:56:47,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-12-16 00:56:47,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2021-12-16 00:56:47,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 230 states have (on average 1.5260869565217392) internal successors, (351), 233 states have internal predecessors, (351), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-12-16 00:56:47,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 440 transitions. [2021-12-16 00:56:47,197 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 440 transitions. Word has length 89 [2021-12-16 00:56:47,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:56:47,199 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 440 transitions. [2021-12-16 00:56:47,199 INFO L471 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) [2021-12-16 00:56:47,200 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 440 transitions. [2021-12-16 00:56:47,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-16 00:56:47,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:56:47,207 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:56:47,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 00:56:47,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-16 00:56:47,433 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:56:47,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:56:47,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1177822227, now seen corresponding path program 1 times [2021-12-16 00:56:47,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:56:47,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315633387] [2021-12-16 00:56:47,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:56:47,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:56:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:47,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:56:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:47,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:56:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:47,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:56:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:47,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 00:56:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:47,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 00:56:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:47,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 00:56:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:47,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-16 00:56:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:47,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 00:56:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:47,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 00:56:47,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:47,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-16 00:56:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:47,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 00:56:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:47,616 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-16 00:56:47,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:56:47,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315633387] [2021-12-16 00:56:47,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315633387] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:56:47,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214561425] [2021-12-16 00:56:47,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:56:47,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:56:47,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:56:47,621 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) [2021-12-16 00:56:47,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 00:56:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:47,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 00:56:47,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:56:48,030 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-16 00:56:48,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:56:48,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214561425] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:56:48,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:56:48,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-16 00:56:48,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264252259] [2021-12-16 00:56:48,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:56:48,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 00:56:48,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:56:48,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 00:56:48,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:56:48,033 INFO L87 Difference]: Start difference. First operand 292 states and 440 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-16 00:56:48,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:56:48,088 INFO L93 Difference]: Finished difference Result 434 states and 639 transitions. [2021-12-16 00:56:48,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 00:56:48,104 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 [2021-12-16 00:56:48,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:56:48,127 INFO L225 Difference]: With dead ends: 434 [2021-12-16 00:56:48,127 INFO L226 Difference]: Without dead ends: 295 [2021-12-16 00:56:48,128 INFO L932 BasicCegarLoop]: 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 [2021-12-16 00:56:48,132 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 1 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:56:48,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 874 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:56:48,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-12-16 00:56:48,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 294. [2021-12-16 00:56:48,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 232 states have (on average 1.521551724137931) internal successors, (353), 235 states have internal predecessors, (353), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-12-16 00:56:48,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 442 transitions. [2021-12-16 00:56:48,158 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 442 transitions. Word has length 90 [2021-12-16 00:56:48,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:56:48,160 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 442 transitions. [2021-12-16 00:56:48,160 INFO L471 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) [2021-12-16 00:56:48,160 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 442 transitions. [2021-12-16 00:56:48,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-16 00:56:48,165 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:56:48,167 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:56:48,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 00:56:48,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-16 00:56:48,372 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:56:48,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:56:48,373 INFO L85 PathProgramCache]: Analyzing trace with hash 213599068, now seen corresponding path program 1 times [2021-12-16 00:56:48,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:56:48,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364554005] [2021-12-16 00:56:48,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:56:48,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:56:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:48,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:56:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:48,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:56:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:48,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:56:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:48,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 00:56:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:48,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 00:56:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:48,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 00:56:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:48,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 00:56:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:48,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-16 00:56:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:48,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 00:56:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:48,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 00:56:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:48,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 00:56:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:48,521 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-16 00:56:48,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:56:48,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364554005] [2021-12-16 00:56:48,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364554005] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:56:48,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477424218] [2021-12-16 00:56:48,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:56:48,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:56:48,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:56:48,524 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) [2021-12-16 00:56:48,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 00:56:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:48,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 00:56:48,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:56:48,921 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-16 00:56:48,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:56:48,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477424218] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:56:48,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:56:48,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-16 00:56:48,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158496590] [2021-12-16 00:56:48,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:56:48,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 00:56:48,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:56:48,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 00:56:48,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:56:48,924 INFO L87 Difference]: Start difference. First operand 294 states and 442 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-16 00:56:48,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:56:48,962 INFO L93 Difference]: Finished difference Result 618 states and 943 transitions. [2021-12-16 00:56:48,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 00:56:48,963 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 [2021-12-16 00:56:48,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:56:48,967 INFO L225 Difference]: With dead ends: 618 [2021-12-16 00:56:48,967 INFO L226 Difference]: Without dead ends: 351 [2021-12-16 00:56:48,968 INFO L932 BasicCegarLoop]: 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 [2021-12-16 00:56:48,969 INFO L933 BasicCegarLoop]: 464 mSDtfsCounter, 107 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:56:48,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 858 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:56:48,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-12-16 00:56:49,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 343. [2021-12-16 00:56:49,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 270 states have (on average 1.537037037037037) internal successors, (415), 273 states have internal predecessors, (415), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2021-12-16 00:56:49,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 526 transitions. [2021-12-16 00:56:49,012 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 526 transitions. Word has length 96 [2021-12-16 00:56:49,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:56:49,013 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 526 transitions. [2021-12-16 00:56:49,013 INFO L471 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) [2021-12-16 00:56:49,013 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 526 transitions. [2021-12-16 00:56:49,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-16 00:56:49,016 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:56:49,016 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:56:49,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 00:56:49,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:56:49,232 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:56:49,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:56:49,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1191934709, now seen corresponding path program 1 times [2021-12-16 00:56:49,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:56:49,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979039596] [2021-12-16 00:56:49,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:56:49,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:56:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:49,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:56:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:49,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:56:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:49,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:56:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:49,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 00:56:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:49,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 00:56:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:49,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 00:56:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:49,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-16 00:56:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:49,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 00:56:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:49,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 00:56:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:49,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 00:56:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:49,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 00:56:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:49,379 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-16 00:56:49,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:56:49,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979039596] [2021-12-16 00:56:49,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979039596] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:56:49,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64557845] [2021-12-16 00:56:49,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:56:49,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:56:49,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:56:49,388 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) [2021-12-16 00:56:49,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 00:56:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:49,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 00:56:49,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:56:49,809 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-16 00:56:49,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:56:49,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64557845] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:56:49,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:56:49,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-16 00:56:49,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641722894] [2021-12-16 00:56:49,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:56:49,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 00:56:49,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:56:49,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 00:56:49,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-16 00:56:49,812 INFO L87 Difference]: Start difference. First operand 343 states and 526 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-16 00:56:49,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:56:49,883 INFO L93 Difference]: Finished difference Result 677 states and 1042 transitions. [2021-12-16 00:56:49,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 00:56:49,884 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 [2021-12-16 00:56:49,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:56:49,887 INFO L225 Difference]: With dead ends: 677 [2021-12-16 00:56:49,887 INFO L226 Difference]: Without dead ends: 345 [2021-12-16 00:56:49,888 INFO L932 BasicCegarLoop]: 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 [2021-12-16 00:56:49,889 INFO L933 BasicCegarLoop]: 431 mSDtfsCounter, 125 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:56:49,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1580 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:56:49,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-12-16 00:56:49,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2021-12-16 00:56:49,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 271 states have (on average 1.5350553505535056) internal successors, (416), 275 states have internal predecessors, (416), 56 states have call successors, (56), 16 states have call predecessors, (56), 17 states have return successors, (57), 55 states have call predecessors, (57), 55 states have call successors, (57) [2021-12-16 00:56:49,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 529 transitions. [2021-12-16 00:56:49,926 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 529 transitions. Word has length 97 [2021-12-16 00:56:49,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:56:49,926 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 529 transitions. [2021-12-16 00:56:49,926 INFO L471 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) [2021-12-16 00:56:49,927 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 529 transitions. [2021-12-16 00:56:49,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-16 00:56:49,929 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:56:49,929 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:56:49,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 00:56:50,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:56:50,148 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:56:50,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:56:50,148 INFO L85 PathProgramCache]: Analyzing trace with hash -398998019, now seen corresponding path program 1 times [2021-12-16 00:56:50,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:56:50,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104529199] [2021-12-16 00:56:50,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:56:50,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:56:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:50,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:56:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:50,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:56:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:50,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:56:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:50,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:56:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:50,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-16 00:56:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:50,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-16 00:56:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:50,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 00:56:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:50,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-16 00:56:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:50,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 00:56:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:50,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 00:56:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:50,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 00:56:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:50,336 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-16 00:56:50,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:56:50,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104529199] [2021-12-16 00:56:50,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104529199] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:56:50,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119948471] [2021-12-16 00:56:50,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:56:50,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:56:50,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:56:50,339 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) [2021-12-16 00:56:50,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 00:56:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:50,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 00:56:50,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:56:50,718 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-16 00:56:50,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:56:50,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119948471] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:56:50,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:56:50,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-16 00:56:50,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159609493] [2021-12-16 00:56:50,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:56:50,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 00:56:50,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:56:50,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 00:56:50,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-16 00:56:50,721 INFO L87 Difference]: Start difference. First operand 345 states and 529 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-16 00:56:50,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:56:50,782 INFO L93 Difference]: Finished difference Result 679 states and 1047 transitions. [2021-12-16 00:56:50,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 00:56:50,783 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 [2021-12-16 00:56:50,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:56:50,785 INFO L225 Difference]: With dead ends: 679 [2021-12-16 00:56:50,786 INFO L226 Difference]: Without dead ends: 347 [2021-12-16 00:56:50,787 INFO L932 BasicCegarLoop]: 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 [2021-12-16 00:56:50,788 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 124 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:56:50,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1569 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:56:50,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-16 00:56:50,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2021-12-16 00:56:50,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 272 states have (on average 1.5330882352941178) internal successors, (417), 277 states have internal predecessors, (417), 56 states have call successors, (56), 16 states have call predecessors, (56), 18 states have return successors, (62), 55 states have call predecessors, (62), 55 states have call successors, (62) [2021-12-16 00:56:50,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 535 transitions. [2021-12-16 00:56:50,806 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 535 transitions. Word has length 98 [2021-12-16 00:56:50,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:56:50,806 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 535 transitions. [2021-12-16 00:56:50,806 INFO L471 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) [2021-12-16 00:56:50,807 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 535 transitions. [2021-12-16 00:56:50,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-16 00:56:50,809 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:56:50,809 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:56:50,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 00:56:51,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:56:51,024 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:56:51,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:56:51,024 INFO L85 PathProgramCache]: Analyzing trace with hash 262721501, now seen corresponding path program 1 times [2021-12-16 00:56:51,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:56:51,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002479529] [2021-12-16 00:56:51,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:56:51,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:56:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:51,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:56:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:51,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:56:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:51,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:56:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:51,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:56:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:51,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:56:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:51,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 00:56:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:51,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 00:56:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:51,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 00:56:51,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:51,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-16 00:56:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:51,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 00:56:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:51,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-16 00:56:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:51,155 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-16 00:56:51,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:56:51,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002479529] [2021-12-16 00:56:51,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002479529] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:56:51,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:56:51,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 00:56:51,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638590662] [2021-12-16 00:56:51,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:56:51,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 00:56:51,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:56:51,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 00:56:51,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:56:51,158 INFO L87 Difference]: Start difference. First operand 347 states and 535 transitions. Second operand has 9 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-16 00:56:52,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:56:52,550 INFO L93 Difference]: Finished difference Result 819 states and 1261 transitions. [2021-12-16 00:56:52,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 00:56:52,551 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 [2021-12-16 00:56:52,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:56:52,554 INFO L225 Difference]: With dead ends: 819 [2021-12-16 00:56:52,554 INFO L226 Difference]: Without dead ends: 495 [2021-12-16 00:56:52,556 INFO L932 BasicCegarLoop]: 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 [2021-12-16 00:56:52,557 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 1023 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 1581 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 00:56:52,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1040 Valid, 1581 Invalid, 2049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 1688 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 00:56:52,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-12-16 00:56:52,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 347. [2021-12-16 00:56:52,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 272 states have (on average 1.5330882352941178) internal successors, (417), 277 states have internal predecessors, (417), 56 states have call successors, (56), 16 states have call predecessors, (56), 18 states have return successors, (61), 55 states have call predecessors, (61), 55 states have call successors, (61) [2021-12-16 00:56:52,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 534 transitions. [2021-12-16 00:56:52,582 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 534 transitions. Word has length 99 [2021-12-16 00:56:52,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:56:52,583 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 534 transitions. [2021-12-16 00:56:52,583 INFO L471 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) [2021-12-16 00:56:52,583 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 534 transitions. [2021-12-16 00:56:52,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-16 00:56:52,585 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:56:52,586 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:56:52,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 00:56:52,586 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:56:52,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:56:52,587 INFO L85 PathProgramCache]: Analyzing trace with hash 963094467, now seen corresponding path program 2 times [2021-12-16 00:56:52,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:56:52,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695835307] [2021-12-16 00:56:52,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:56:52,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:56:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:52,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:56:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:52,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:56:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:52,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:56:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:52,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:56:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:52,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:56:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:52,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 00:56:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:52,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 00:56:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:52,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 00:56:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:52,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 00:56:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:52,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-16 00:56:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:52,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-16 00:56:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:52,704 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-16 00:56:52,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:56:52,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695835307] [2021-12-16 00:56:52,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695835307] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:56:52,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:56:52,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 00:56:52,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515137550] [2021-12-16 00:56:52,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:56:52,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 00:56:52,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:56:52,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 00:56:52,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:56:52,707 INFO L87 Difference]: Start difference. First operand 347 states and 534 transitions. Second operand has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-16 00:56:54,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:56:54,150 INFO L93 Difference]: Finished difference Result 821 states and 1264 transitions. [2021-12-16 00:56:54,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 00:56:54,150 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 [2021-12-16 00:56:54,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:56:54,154 INFO L225 Difference]: With dead ends: 821 [2021-12-16 00:56:54,154 INFO L226 Difference]: Without dead ends: 497 [2021-12-16 00:56:54,155 INFO L932 BasicCegarLoop]: 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 [2021-12-16 00:56:54,156 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 1018 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 1698 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 2059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 1698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 00:56:54,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1035 Valid, 1582 Invalid, 2059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 1698 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 00:56:54,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-12-16 00:56:54,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 349. [2021-12-16 00:56:54,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 273 states have (on average 1.531135531135531) internal successors, (418), 279 states have internal predecessors, (418), 56 states have call successors, (56), 16 states have call predecessors, (56), 19 states have return successors, (63), 55 states have call predecessors, (63), 55 states have call successors, (63) [2021-12-16 00:56:54,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 537 transitions. [2021-12-16 00:56:54,198 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 537 transitions. Word has length 100 [2021-12-16 00:56:54,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:56:54,199 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 537 transitions. [2021-12-16 00:56:54,199 INFO L471 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) [2021-12-16 00:56:54,199 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 537 transitions. [2021-12-16 00:56:54,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-16 00:56:54,201 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:56:54,201 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:56:54,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 00:56:54,202 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:56:54,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:56:54,202 INFO L85 PathProgramCache]: Analyzing trace with hash -868146014, now seen corresponding path program 1 times [2021-12-16 00:56:54,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:56:54,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508467413] [2021-12-16 00:56:54,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:56:54,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:56:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:54,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:56:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:54,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:56:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:54,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:56:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:54,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:56:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:54,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:56:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:54,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:56:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:54,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-16 00:56:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:54,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-16 00:56:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:54,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 00:56:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:54,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 00:56:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:54,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-16 00:56:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:54,354 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-16 00:56:54,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:56:54,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508467413] [2021-12-16 00:56:54,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508467413] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:56:54,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:56:54,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-16 00:56:54,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79247736] [2021-12-16 00:56:54,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:56:54,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 00:56:54,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:56:54,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 00:56:54,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-16 00:56:54,357 INFO L87 Difference]: Start difference. First operand 349 states and 537 transitions. Second operand has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-16 00:56:56,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:56:56,290 INFO L93 Difference]: Finished difference Result 819 states and 1259 transitions. [2021-12-16 00:56:56,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 00:56:56,290 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 [2021-12-16 00:56:56,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:56:56,294 INFO L225 Difference]: With dead ends: 819 [2021-12-16 00:56:56,294 INFO L226 Difference]: Without dead ends: 497 [2021-12-16 00:56:56,297 INFO L932 BasicCegarLoop]: 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 [2021-12-16 00:56:56,298 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 1130 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 3023 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 2038 SdHoareTripleChecker+Invalid, 3440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 3023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-16 00:56:56,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1130 Valid, 2038 Invalid, 3440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 3023 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-16 00:56:56,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-12-16 00:56:56,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 349. [2021-12-16 00:56:56,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 273 states have (on average 1.531135531135531) internal successors, (418), 279 states have internal predecessors, (418), 56 states have call successors, (56), 16 states have call predecessors, (56), 19 states have return successors, (62), 55 states have call predecessors, (62), 55 states have call successors, (62) [2021-12-16 00:56:56,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 536 transitions. [2021-12-16 00:56:56,333 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 536 transitions. Word has length 101 [2021-12-16 00:56:56,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:56:56,333 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 536 transitions. [2021-12-16 00:56:56,333 INFO L471 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) [2021-12-16 00:56:56,334 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 536 transitions. [2021-12-16 00:56:56,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-16 00:56:56,335 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:56:56,336 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:56:56,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 00:56:56,336 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:56:56,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:56:56,336 INFO L85 PathProgramCache]: Analyzing trace with hash 400437826, now seen corresponding path program 2 times [2021-12-16 00:56:56,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:56:56,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169385412] [2021-12-16 00:56:56,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:56:56,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:56:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:56,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:56:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:56,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:56:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:56,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:56:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:56,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:56:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:56,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:56:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:56,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:56:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:56,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 00:56:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:56,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 00:56:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:56,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 00:56:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:56,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 00:56:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:56,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 00:56:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:56,488 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-16 00:56:56,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:56:56,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169385412] [2021-12-16 00:56:56,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169385412] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:56:56,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:56:56,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-16 00:56:56,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496201907] [2021-12-16 00:56:56,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:56:56,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 00:56:56,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:56:56,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 00:56:56,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-16 00:56:56,491 INFO L87 Difference]: Start difference. First operand 349 states and 536 transitions. Second operand has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-16 00:56:58,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:56:58,397 INFO L93 Difference]: Finished difference Result 821 states and 1265 transitions. [2021-12-16 00:56:58,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 00:56:58,397 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 [2021-12-16 00:56:58,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:56:58,401 INFO L225 Difference]: With dead ends: 821 [2021-12-16 00:56:58,401 INFO L226 Difference]: Without dead ends: 499 [2021-12-16 00:56:58,403 INFO L932 BasicCegarLoop]: 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 [2021-12-16 00:56:58,403 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 1125 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 3056 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 2039 SdHoareTripleChecker+Invalid, 3468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 3056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-16 00:56:58,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1125 Valid, 2039 Invalid, 3468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 3056 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-16 00:56:58,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-12-16 00:56:58,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 351. [2021-12-16 00:56:58,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 274 states have (on average 1.5291970802919708) internal successors, (419), 281 states have internal predecessors, (419), 56 states have call successors, (56), 16 states have call predecessors, (56), 20 states have return successors, (67), 55 states have call predecessors, (67), 55 states have call successors, (67) [2021-12-16 00:56:58,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 542 transitions. [2021-12-16 00:56:58,434 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 542 transitions. Word has length 102 [2021-12-16 00:56:58,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:56:58,435 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 542 transitions. [2021-12-16 00:56:58,435 INFO L471 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) [2021-12-16 00:56:58,435 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 542 transitions. [2021-12-16 00:56:58,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-16 00:56:58,437 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:56:58,437 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:56:58,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 00:56:58,437 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:56:58,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:56:58,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1821386649, now seen corresponding path program 1 times [2021-12-16 00:56:58,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:56:58,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821511629] [2021-12-16 00:56:58,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:56:58,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:56:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:58,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:56:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:58,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:56:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:58,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:56:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:58,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:56:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:58,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:56:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:58,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:56:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:58,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-16 00:56:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:58,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 00:56:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:58,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-16 00:56:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:58,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 00:56:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:58,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-16 00:56:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:58,549 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:56:58,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:56:58,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821511629] [2021-12-16 00:56:58,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821511629] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:56:58,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633718133] [2021-12-16 00:56:58,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:56:58,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:56:58,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:56:58,552 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) [2021-12-16 00:56:58,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 00:56:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:56:58,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 00:56:58,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:56:58,880 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:56:58,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 00:56:59,048 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:56:59,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633718133] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 00:56:59,049 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 00:56:59,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2021-12-16 00:56:59,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977971504] [2021-12-16 00:56:59,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 00:56:59,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 00:56:59,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:56:59,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 00:56:59,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-16 00:56:59,054 INFO L87 Difference]: Start difference. First operand 351 states and 542 transitions. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-16 00:57:00,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:57:00,385 INFO L93 Difference]: Finished difference Result 990 states and 1593 transitions. [2021-12-16 00:57:00,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 00:57:00,386 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 [2021-12-16 00:57:00,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:57:00,391 INFO L225 Difference]: With dead ends: 990 [2021-12-16 00:57:00,392 INFO L226 Difference]: Without dead ends: 851 [2021-12-16 00:57:00,393 INFO L932 BasicCegarLoop]: 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 [2021-12-16 00:57:00,394 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 1529 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 1682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 00:57:00,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1574 Valid, 1761 Invalid, 1682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 00:57:00,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2021-12-16 00:57:00,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 679. [2021-12-16 00:57:00,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 538 states have (on average 1.5929368029739777) internal successors, (857), 545 states have internal predecessors, (857), 120 states have call successors, (120), 16 states have call predecessors, (120), 20 states have return successors, (141), 119 states have call predecessors, (141), 119 states have call successors, (141) [2021-12-16 00:57:00,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1118 transitions. [2021-12-16 00:57:00,436 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1118 transitions. Word has length 103 [2021-12-16 00:57:00,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:57:00,436 INFO L470 AbstractCegarLoop]: Abstraction has 679 states and 1118 transitions. [2021-12-16 00:57:00,437 INFO L471 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) [2021-12-16 00:57:00,437 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1118 transitions. [2021-12-16 00:57:00,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-16 00:57:00,441 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:57:00,442 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:57:00,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-16 00:57:00,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:57:00,666 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:57:00,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:57:00,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1014946556, now seen corresponding path program 1 times [2021-12-16 00:57:00,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:57:00,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845439716] [2021-12-16 00:57:00,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:57:00,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:57:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:00,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:57:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:00,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:57:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:00,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:57:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:00,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:57:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:00,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:57:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:00,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:57:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:00,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 00:57:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:00,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 00:57:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:00,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 00:57:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:00,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 00:57:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:00,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-16 00:57:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:00,781 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:57:00,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:57:00,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845439716] [2021-12-16 00:57:00,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845439716] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:57:00,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:57:00,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:57:00,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890409900] [2021-12-16 00:57:00,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:57:00,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:57:00,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:57:00,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:57:00,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:57:00,784 INFO L87 Difference]: Start difference. First operand 679 states and 1118 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-16 00:57:01,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:57:01,903 INFO L93 Difference]: Finished difference Result 1771 states and 2964 transitions. [2021-12-16 00:57:01,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:57:01,904 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 [2021-12-16 00:57:01,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:57:01,912 INFO L225 Difference]: With dead ends: 1771 [2021-12-16 00:57:01,912 INFO L226 Difference]: Without dead ends: 1160 [2021-12-16 00:57:01,914 INFO L932 BasicCegarLoop]: 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 [2021-12-16 00:57:01,915 INFO L933 BasicCegarLoop]: 593 mSDtfsCounter, 1014 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:57:01,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1029 Valid, 1340 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 00:57:01,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2021-12-16 00:57:01,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1004. [2021-12-16 00:57:01,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 799 states have (on average 1.6045056320400501) internal successors, (1282), 806 states have internal predecessors, (1282), 184 states have call successors, (184), 16 states have call predecessors, (184), 20 states have return successors, (215), 183 states have call predecessors, (215), 183 states have call successors, (215) [2021-12-16 00:57:01,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1681 transitions. [2021-12-16 00:57:01,975 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1681 transitions. Word has length 109 [2021-12-16 00:57:01,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:57:01,976 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 1681 transitions. [2021-12-16 00:57:01,976 INFO L471 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) [2021-12-16 00:57:01,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1681 transitions. [2021-12-16 00:57:01,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-16 00:57:01,982 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:57:01,982 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:57:01,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 00:57:01,982 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:57:01,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:57:01,983 INFO L85 PathProgramCache]: Analyzing trace with hash 2033055594, now seen corresponding path program 1 times [2021-12-16 00:57:01,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:57:01,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072156183] [2021-12-16 00:57:01,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:57:01,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:57:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:02,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:57:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:02,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:57:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:02,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:57:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:02,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:57:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:02,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:57:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:02,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:57:02,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:02,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 00:57:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:02,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 00:57:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:02,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 00:57:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:02,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-16 00:57:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:02,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 00:57:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:02,070 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:57:02,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:57:02,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072156183] [2021-12-16 00:57:02,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072156183] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:57:02,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:57:02,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:57:02,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573057432] [2021-12-16 00:57:02,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:57:02,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:57:02,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:57:02,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:57:02,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:57:02,073 INFO L87 Difference]: Start difference. First operand 1004 states and 1681 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-16 00:57:03,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:57:03,176 INFO L93 Difference]: Finished difference Result 2551 states and 4313 transitions. [2021-12-16 00:57:03,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:57:03,177 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 [2021-12-16 00:57:03,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:57:03,198 INFO L225 Difference]: With dead ends: 2551 [2021-12-16 00:57:03,198 INFO L226 Difference]: Without dead ends: 1668 [2021-12-16 00:57:03,201 INFO L932 BasicCegarLoop]: 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 [2021-12-16 00:57:03,202 INFO L933 BasicCegarLoop]: 593 mSDtfsCounter, 1012 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 00:57:03,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1027 Valid, 1348 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 00:57:03,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2021-12-16 00:57:03,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1512. [2021-12-16 00:57:03,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1212 states have (on average 1.6113861386138615) internal successors, (1953), 1219 states have internal predecessors, (1953), 279 states have call successors, (279), 16 states have call predecessors, (279), 20 states have return successors, (310), 278 states have call predecessors, (310), 278 states have call successors, (310) [2021-12-16 00:57:03,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 2542 transitions. [2021-12-16 00:57:03,283 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 2542 transitions. Word has length 110 [2021-12-16 00:57:03,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:57:03,283 INFO L470 AbstractCegarLoop]: Abstraction has 1512 states and 2542 transitions. [2021-12-16 00:57:03,283 INFO L471 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) [2021-12-16 00:57:03,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 2542 transitions. [2021-12-16 00:57:03,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-16 00:57:03,291 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:57:03,291 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:57:03,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 00:57:03,292 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:57:03,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:57:03,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1439293862, now seen corresponding path program 1 times [2021-12-16 00:57:03,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:57:03,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471638537] [2021-12-16 00:57:03,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:57:03,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:57:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:03,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:57:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:03,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:57:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:03,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:57:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:03,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:57:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:03,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:57:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:03,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:57:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:03,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 00:57:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:03,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 00:57:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:03,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 00:57:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:03,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 00:57:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:03,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 00:57:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:57:03,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:57:03,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471638537] [2021-12-16 00:57:03,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471638537] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:57:03,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:57:03,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:57:03,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141596586] [2021-12-16 00:57:03,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:57:03,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:57:03,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:57:03,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:57:03,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:57:03,383 INFO L87 Difference]: Start difference. First operand 1512 states and 2542 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-16 00:57:04,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:57:04,435 INFO L93 Difference]: Finished difference Result 3703 states and 6322 transitions. [2021-12-16 00:57:04,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:57:04,437 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 [2021-12-16 00:57:04,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:57:04,450 INFO L225 Difference]: With dead ends: 3703 [2021-12-16 00:57:04,450 INFO L226 Difference]: Without dead ends: 2437 [2021-12-16 00:57:04,455 INFO L932 BasicCegarLoop]: 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 [2021-12-16 00:57:04,455 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 1010 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 00:57:04,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1025 Valid, 1315 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 00:57:04,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2021-12-16 00:57:04,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 2281. [2021-12-16 00:57:04,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2281 states, 1858 states have (on average 1.6167922497308935) internal successors, (3004), 1865 states have internal predecessors, (3004), 402 states have call successors, (402), 16 states have call predecessors, (402), 20 states have return successors, (449), 401 states have call predecessors, (449), 401 states have call successors, (449) [2021-12-16 00:57:04,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 3855 transitions. [2021-12-16 00:57:04,583 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 3855 transitions. Word has length 111 [2021-12-16 00:57:04,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:57:04,583 INFO L470 AbstractCegarLoop]: Abstraction has 2281 states and 3855 transitions. [2021-12-16 00:57:04,583 INFO L471 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) [2021-12-16 00:57:04,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 3855 transitions. [2021-12-16 00:57:04,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-16 00:57:04,592 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:57:04,592 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:57:04,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 00:57:04,593 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:57:04,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:57:04,593 INFO L85 PathProgramCache]: Analyzing trace with hash -497333621, now seen corresponding path program 1 times [2021-12-16 00:57:04,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:57:04,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517985396] [2021-12-16 00:57:04,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:57:04,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:57:04,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:04,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:57:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:04,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:57:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:04,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:57:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:04,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:57:04,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:04,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:57:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:04,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:57:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:04,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 00:57:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:04,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-16 00:57:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:04,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 00:57:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:04,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 00:57:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:04,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 00:57:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:04,678 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:57:04,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:57:04,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517985396] [2021-12-16 00:57:04,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517985396] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:57:04,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:57:04,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:57:04,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266837947] [2021-12-16 00:57:04,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:57:04,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:57:04,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:57:04,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:57:04,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:57:04,681 INFO L87 Difference]: Start difference. First operand 2281 states and 3855 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-16 00:57:05,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:57:05,767 INFO L93 Difference]: Finished difference Result 5497 states and 9456 transitions. [2021-12-16 00:57:05,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:57:05,767 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 [2021-12-16 00:57:05,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:57:05,784 INFO L225 Difference]: With dead ends: 5497 [2021-12-16 00:57:05,785 INFO L226 Difference]: Without dead ends: 3666 [2021-12-16 00:57:05,791 INFO L932 BasicCegarLoop]: 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 [2021-12-16 00:57:05,792 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 1008 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 00:57:05,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1023 Valid, 1315 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 00:57:05,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3666 states. [2021-12-16 00:57:05,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3666 to 3510. [2021-12-16 00:57:05,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3510 states, 2908 states have (on average 1.6200137551581844) internal successors, (4711), 2915 states have internal predecessors, (4711), 581 states have call successors, (581), 16 states have call predecessors, (581), 20 states have return successors, (654), 580 states have call predecessors, (654), 580 states have call successors, (654) [2021-12-16 00:57:05,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 5946 transitions. [2021-12-16 00:57:05,994 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 5946 transitions. Word has length 112 [2021-12-16 00:57:05,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:57:05,994 INFO L470 AbstractCegarLoop]: Abstraction has 3510 states and 5946 transitions. [2021-12-16 00:57:05,994 INFO L471 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) [2021-12-16 00:57:05,995 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 5946 transitions. [2021-12-16 00:57:06,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 00:57:06,004 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:57:06,004 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:57:06,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 00:57:06,005 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:57:06,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:57:06,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1467419038, now seen corresponding path program 1 times [2021-12-16 00:57:06,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:57:06,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171042433] [2021-12-16 00:57:06,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:57:06,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:57:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:06,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:57:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:06,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:57:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:06,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:57:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:06,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:57:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:06,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:57:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:06,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:57:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:06,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-16 00:57:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:06,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 00:57:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:06,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-16 00:57:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:06,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 00:57:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:06,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 00:57:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:06,096 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:57:06,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:57:06,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171042433] [2021-12-16 00:57:06,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171042433] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:57:06,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:57:06,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:57:06,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265796083] [2021-12-16 00:57:06,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:57:06,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:57:06,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:57:06,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:57:06,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:57:06,098 INFO L87 Difference]: Start difference. First operand 3510 states and 5946 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-16 00:57:07,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:57:07,293 INFO L93 Difference]: Finished difference Result 8445 states and 14603 transitions. [2021-12-16 00:57:07,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:57:07,293 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 [2021-12-16 00:57:07,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:57:07,322 INFO L225 Difference]: With dead ends: 8445 [2021-12-16 00:57:07,323 INFO L226 Difference]: Without dead ends: 5697 [2021-12-16 00:57:07,333 INFO L932 BasicCegarLoop]: 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 [2021-12-16 00:57:07,334 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 1006 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 00:57:07,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1021 Valid, 1320 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 00:57:07,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5697 states. [2021-12-16 00:57:07,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5697 to 5541. [2021-12-16 00:57:07,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5541 states, 4563 states have (on average 1.613631382862152) internal successors, (7363), 4570 states have internal predecessors, (7363), 957 states have call successors, (957), 16 states have call predecessors, (957), 20 states have return successors, (1074), 956 states have call predecessors, (1074), 956 states have call successors, (1074) [2021-12-16 00:57:07,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5541 states to 5541 states and 9394 transitions. [2021-12-16 00:57:07,650 INFO L78 Accepts]: Start accepts. Automaton has 5541 states and 9394 transitions. Word has length 113 [2021-12-16 00:57:07,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:57:07,650 INFO L470 AbstractCegarLoop]: Abstraction has 5541 states and 9394 transitions. [2021-12-16 00:57:07,651 INFO L471 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) [2021-12-16 00:57:07,652 INFO L276 IsEmpty]: Start isEmpty. Operand 5541 states and 9394 transitions. [2021-12-16 00:57:07,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-16 00:57:07,663 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:57:07,664 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:57:07,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 00:57:07,664 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:57:07,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:57:07,665 INFO L85 PathProgramCache]: Analyzing trace with hash -678340145, now seen corresponding path program 1 times [2021-12-16 00:57:07,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:57:07,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122622141] [2021-12-16 00:57:07,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:57:07,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:57:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:07,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:57:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:07,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:57:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:07,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:57:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:07,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:57:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:07,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:57:07,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:07,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:57:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:07,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 00:57:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:07,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 00:57:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:07,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 00:57:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:07,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-16 00:57:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:07,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-16 00:57:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:07,764 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:57:07,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:57:07,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122622141] [2021-12-16 00:57:07,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122622141] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:57:07,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:57:07,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:57:07,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753586012] [2021-12-16 00:57:07,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:57:07,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:57:07,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:57:07,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:57:07,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:57:07,767 INFO L87 Difference]: Start difference. First operand 5541 states and 9394 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-16 00:57:09,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:57:09,009 INFO L93 Difference]: Finished difference Result 13782 states and 23824 transitions. [2021-12-16 00:57:09,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:57:09,010 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 [2021-12-16 00:57:09,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:57:09,061 INFO L225 Difference]: With dead ends: 13782 [2021-12-16 00:57:09,061 INFO L226 Difference]: Without dead ends: 9380 [2021-12-16 00:57:09,109 INFO L932 BasicCegarLoop]: 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 [2021-12-16 00:57:09,110 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 1004 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 00:57:09,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1019 Valid, 1314 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 00:57:09,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9380 states. [2021-12-16 00:57:09,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9380 to 9224. [2021-12-16 00:57:09,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9224 states, 7640 states have (on average 1.6111256544502617) internal successors, (12309), 7647 states have internal predecessors, (12309), 1563 states have call successors, (1563), 16 states have call predecessors, (1563), 20 states have return successors, (1758), 1562 states have call predecessors, (1758), 1562 states have call successors, (1758) [2021-12-16 00:57:09,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9224 states to 9224 states and 15630 transitions. [2021-12-16 00:57:09,586 INFO L78 Accepts]: Start accepts. Automaton has 9224 states and 15630 transitions. Word has length 114 [2021-12-16 00:57:09,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:57:09,586 INFO L470 AbstractCegarLoop]: Abstraction has 9224 states and 15630 transitions. [2021-12-16 00:57:09,586 INFO L471 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) [2021-12-16 00:57:09,587 INFO L276 IsEmpty]: Start isEmpty. Operand 9224 states and 15630 transitions. [2021-12-16 00:57:09,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-16 00:57:09,602 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:57:09,602 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:57:09,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 00:57:09,603 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:57:09,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:57:09,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1860754352, now seen corresponding path program 1 times [2021-12-16 00:57:09,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:57:09,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953292507] [2021-12-16 00:57:09,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:57:09,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:57:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:09,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:57:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:09,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:57:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:09,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:57:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:09,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:57:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:09,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:57:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:09,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:57:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:09,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 00:57:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:09,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 00:57:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:09,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 00:57:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:09,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-16 00:57:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:09,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-16 00:57:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:09,693 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:57:09,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:57:09,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953292507] [2021-12-16 00:57:09,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953292507] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:57:09,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:57:09,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:57:09,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268232142] [2021-12-16 00:57:09,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:57:09,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:57:09,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:57:09,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:57:09,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:57:09,697 INFO L87 Difference]: Start difference. First operand 9224 states and 15630 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-16 00:57:11,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:57:11,139 INFO L93 Difference]: Finished difference Result 23966 states and 41370 transitions. [2021-12-16 00:57:11,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:57:11,139 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 [2021-12-16 00:57:11,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:57:11,210 INFO L225 Difference]: With dead ends: 23966 [2021-12-16 00:57:11,210 INFO L226 Difference]: Without dead ends: 16333 [2021-12-16 00:57:11,245 INFO L932 BasicCegarLoop]: 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 [2021-12-16 00:57:11,246 INFO L933 BasicCegarLoop]: 598 mSDtfsCounter, 1002 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 00:57:11,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1017 Valid, 1365 Invalid, 1325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 00:57:11,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16333 states. [2021-12-16 00:57:11,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16333 to 16177. [2021-12-16 00:57:11,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16177 states, 13390 states have (on average 1.6020164301717699) internal successors, (21451), 13397 states have internal predecessors, (21451), 2766 states have call successors, (2766), 16 states have call predecessors, (2766), 20 states have return successors, (3105), 2765 states have call predecessors, (3105), 2765 states have call successors, (3105) [2021-12-16 00:57:12,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16177 states to 16177 states and 27322 transitions. [2021-12-16 00:57:12,049 INFO L78 Accepts]: Start accepts. Automaton has 16177 states and 27322 transitions. Word has length 115 [2021-12-16 00:57:12,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:57:12,049 INFO L470 AbstractCegarLoop]: Abstraction has 16177 states and 27322 transitions. [2021-12-16 00:57:12,049 INFO L471 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) [2021-12-16 00:57:12,049 INFO L276 IsEmpty]: Start isEmpty. Operand 16177 states and 27322 transitions. [2021-12-16 00:57:12,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-16 00:57:12,069 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:57:12,069 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:57:12,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 00:57:12,070 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:57:12,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:57:12,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1941197296, now seen corresponding path program 1 times [2021-12-16 00:57:12,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:57:12,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664604890] [2021-12-16 00:57:12,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:57:12,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:57:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:12,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:57:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:12,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:57:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:12,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:57:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:12,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:57:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:12,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:57:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:12,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:57:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:12,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 00:57:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:12,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-16 00:57:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:12,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 00:57:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:12,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-16 00:57:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:12,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-16 00:57:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:12,242 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:57:12,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:57:12,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664604890] [2021-12-16 00:57:12,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664604890] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:57:12,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:57:12,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:57:12,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635305583] [2021-12-16 00:57:12,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:57:12,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:57:12,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:57:12,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:57:12,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:57:12,246 INFO L87 Difference]: Start difference. First operand 16177 states and 27322 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-16 00:57:13,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:57:13,931 INFO L93 Difference]: Finished difference Result 42932 states and 73969 transitions. [2021-12-16 00:57:13,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:57:13,931 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 [2021-12-16 00:57:13,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:57:14,054 INFO L225 Difference]: With dead ends: 42932 [2021-12-16 00:57:14,055 INFO L226 Difference]: Without dead ends: 28988 [2021-12-16 00:57:14,100 INFO L932 BasicCegarLoop]: 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 [2021-12-16 00:57:14,101 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 1000 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 00:57:14,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1015 Valid, 1320 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 00:57:14,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28988 states. [2021-12-16 00:57:15,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28988 to 28832. [2021-12-16 00:57:15,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28832 states, 24006 states have (on average 1.597725568607848) internal successors, (38355), 24013 states have internal predecessors, (38355), 4805 states have call successors, (4805), 16 states have call predecessors, (4805), 20 states have return successors, (5418), 4804 states have call predecessors, (5418), 4804 states have call successors, (5418) [2021-12-16 00:57:15,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28832 states to 28832 states and 48578 transitions. [2021-12-16 00:57:15,707 INFO L78 Accepts]: Start accepts. Automaton has 28832 states and 48578 transitions. Word has length 116 [2021-12-16 00:57:15,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:57:15,707 INFO L470 AbstractCegarLoop]: Abstraction has 28832 states and 48578 transitions. [2021-12-16 00:57:15,707 INFO L471 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) [2021-12-16 00:57:15,708 INFO L276 IsEmpty]: Start isEmpty. Operand 28832 states and 48578 transitions. [2021-12-16 00:57:15,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-16 00:57:15,728 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:57:15,729 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:57:15,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 00:57:15,729 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:57:15,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:57:15,730 INFO L85 PathProgramCache]: Analyzing trace with hash -732373582, now seen corresponding path program 1 times [2021-12-16 00:57:15,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:57:15,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204401156] [2021-12-16 00:57:15,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:57:15,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:57:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:15,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:57:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:15,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:57:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:15,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:57:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:15,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:57:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:15,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:57:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:15,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:57:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:15,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-16 00:57:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:15,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 00:57:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:15,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 00:57:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:15,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 00:57:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:15,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 00:57:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:15,815 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:57:15,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:57:15,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204401156] [2021-12-16 00:57:15,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204401156] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:57:15,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:57:15,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:57:15,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897073131] [2021-12-16 00:57:15,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:57:15,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:57:15,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:57:15,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:57:15,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:57:15,818 INFO L87 Difference]: Start difference. First operand 28832 states and 48578 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-16 00:57:18,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:57:18,594 INFO L93 Difference]: Finished difference Result 78694 states and 134728 transitions. [2021-12-16 00:57:18,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:57:18,595 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 [2021-12-16 00:57:18,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:57:18,817 INFO L225 Difference]: With dead ends: 78694 [2021-12-16 00:57:18,817 INFO L226 Difference]: Without dead ends: 52867 [2021-12-16 00:57:18,921 INFO L932 BasicCegarLoop]: 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 [2021-12-16 00:57:18,922 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 998 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 00:57:18,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1013 Valid, 1314 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 00:57:18,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52867 states. [2021-12-16 00:57:21,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52867 to 52711. [2021-12-16 00:57:21,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52711 states, 44170 states have (on average 1.5921213493321258) internal successors, (70324), 44177 states have internal predecessors, (70324), 8520 states have call successors, (8520), 16 states have call predecessors, (8520), 20 states have return successors, (9665), 8519 states have call predecessors, (9665), 8519 states have call successors, (9665) [2021-12-16 00:57:21,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52711 states to 52711 states and 88509 transitions. [2021-12-16 00:57:21,676 INFO L78 Accepts]: Start accepts. Automaton has 52711 states and 88509 transitions. Word has length 117 [2021-12-16 00:57:21,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:57:21,676 INFO L470 AbstractCegarLoop]: Abstraction has 52711 states and 88509 transitions. [2021-12-16 00:57:21,676 INFO L471 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) [2021-12-16 00:57:21,677 INFO L276 IsEmpty]: Start isEmpty. Operand 52711 states and 88509 transitions. [2021-12-16 00:57:21,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-16 00:57:21,699 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:57:21,700 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:57:21,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-16 00:57:21,700 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:57:21,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:57:21,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1116888912, now seen corresponding path program 1 times [2021-12-16 00:57:21,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:57:21,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755759686] [2021-12-16 00:57:21,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:57:21,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:57:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:21,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:57:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:21,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:57:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:21,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:57:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:21,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:57:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:21,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:57:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:21,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:57:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:21,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 00:57:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:21,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 00:57:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:21,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 00:57:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:21,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 00:57:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:21,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 00:57:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:21,806 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:57:21,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:57:21,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755759686] [2021-12-16 00:57:21,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755759686] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:57:21,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:57:21,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:57:21,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849947541] [2021-12-16 00:57:21,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:57:21,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:57:21,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:57:21,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:57:21,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:57:21,809 INFO L87 Difference]: Start difference. First operand 52711 states and 88509 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-16 00:57:25,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:57:25,468 INFO L93 Difference]: Finished difference Result 98465 states and 168915 transitions. [2021-12-16 00:57:25,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:57:25,469 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 [2021-12-16 00:57:25,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:57:26,103 INFO L225 Difference]: With dead ends: 98465 [2021-12-16 00:57:26,104 INFO L226 Difference]: Without dead ends: 98326 [2021-12-16 00:57:26,148 INFO L932 BasicCegarLoop]: 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 [2021-12-16 00:57:26,150 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 996 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 00:57:26,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1011 Valid, 1320 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 00:57:26,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98326 states. [2021-12-16 00:57:30,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98326 to 98170. [2021-12-16 00:57:30,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98170 states, 82830 states have (on average 1.5851020161777134) internal successors, (131294), 82837 states have internal predecessors, (131294), 15319 states have call successors, (15319), 16 states have call predecessors, (15319), 20 states have return successors, (17510), 15318 states have call predecessors, (17510), 15318 states have call successors, (17510) [2021-12-16 00:57:30,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98170 states to 98170 states and 164123 transitions. [2021-12-16 00:57:30,670 INFO L78 Accepts]: Start accepts. Automaton has 98170 states and 164123 transitions. Word has length 118 [2021-12-16 00:57:30,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:57:30,671 INFO L470 AbstractCegarLoop]: Abstraction has 98170 states and 164123 transitions. [2021-12-16 00:57:30,671 INFO L471 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) [2021-12-16 00:57:30,671 INFO L276 IsEmpty]: Start isEmpty. Operand 98170 states and 164123 transitions. [2021-12-16 00:57:30,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-16 00:57:30,692 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:57:30,692 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:57:30,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-16 00:57:30,693 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:57:30,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:57:30,693 INFO L85 PathProgramCache]: Analyzing trace with hash 2090243313, now seen corresponding path program 1 times [2021-12-16 00:57:30,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:57:30,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440287482] [2021-12-16 00:57:30,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:57:30,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:57:30,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:30,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:57:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:30,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:57:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:30,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:57:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:30,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:57:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:30,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:57:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:30,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:57:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:30,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 00:57:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:30,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 00:57:30,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:30,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-16 00:57:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:30,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 00:57:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:30,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-16 00:57:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:57:30,936 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:57:30,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:57:30,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440287482] [2021-12-16 00:57:30,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440287482] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:57:30,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:57:30,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-16 00:57:30,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449230462] [2021-12-16 00:57:30,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:57:30,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-16 00:57:30,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:57:30,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-16 00:57:30,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-12-16 00:57:30,939 INFO L87 Difference]: Start difference. First operand 98170 states and 164123 transitions. Second operand has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11)