./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec27_product13.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec27_product13.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 102266cd9873aec631509424dd889c2e48b781667738cfaa50930481a41b1570 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 17:44:50,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 17:44:50,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 17:44:50,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 17:44:50,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 17:44:50,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 17:44:50,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 17:44:50,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 17:44:50,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 17:44:50,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 17:44:50,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 17:44:50,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 17:44:50,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 17:44:50,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 17:44:50,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 17:44:50,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 17:44:50,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 17:44:50,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 17:44:50,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 17:44:50,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 17:44:50,827 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 17:44:50,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 17:44:50,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 17:44:50,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 17:44:50,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 17:44:50,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 17:44:50,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 17:44:50,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 17:44:50,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 17:44:50,842 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 17:44:50,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 17:44:50,843 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 17:44:50,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 17:44:50,844 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 17:44:50,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 17:44:50,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 17:44:50,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 17:44:50,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 17:44:50,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 17:44:50,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 17:44:50,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 17:44:50,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 17:44:50,848 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 17:44:50,875 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 17:44:50,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 17:44:50,876 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 17:44:50,876 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 17:44:50,877 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 17:44:50,877 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 17:44:50,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 17:44:50,878 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 17:44:50,879 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 17:44:50,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 17:44:50,880 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 17:44:50,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 17:44:50,880 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 17:44:50,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 17:44:50,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 17:44:50,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 17:44:50,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 17:44:50,881 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 17:44:50,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 17:44:50,881 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 17:44:50,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 17:44:50,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 17:44:50,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 17:44:50,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 17:44:50,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:44:50,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 17:44:50,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 17:44:50,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 17:44:50,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 17:44:50,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 17:44:50,884 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 17:44:50,884 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 17:44:50,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 17:44:50,885 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 102266cd9873aec631509424dd889c2e48b781667738cfaa50930481a41b1570 [2022-07-13 17:44:51,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 17:44:51,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 17:44:51,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 17:44:51,085 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 17:44:51,087 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 17:44:51,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec27_product13.cil.c [2022-07-13 17:44:51,146 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e51e3e79/9d8d9d66be814bfdae13e4927f3c5d4a/FLAG9aa7a8991 [2022-07-13 17:44:51,628 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 17:44:51,629 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product13.cil.c [2022-07-13 17:44:51,653 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e51e3e79/9d8d9d66be814bfdae13e4927f3c5d4a/FLAG9aa7a8991 [2022-07-13 17:44:52,124 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e51e3e79/9d8d9d66be814bfdae13e4927f3c5d4a [2022-07-13 17:44:52,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 17:44:52,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 17:44:52,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 17:44:52,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 17:44:52,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 17:44:52,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:44:52" (1/1) ... [2022-07-13 17:44:52,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11ea80b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:44:52, skipping insertion in model container [2022-07-13 17:44:52,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:44:52" (1/1) ... [2022-07-13 17:44:52,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 17:44:52,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 17:44:52,579 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_spec27_product13.cil.c[61687,61700] [2022-07-13 17:44:52,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:44:52,594 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 17:44:52,685 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_spec27_product13.cil.c[61687,61700] [2022-07-13 17:44:52,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:44:52,707 INFO L208 MainTranslator]: Completed translation [2022-07-13 17:44:52,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:44:52 WrapperNode [2022-07-13 17:44:52,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 17:44:52,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 17:44:52,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 17:44:52,709 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 17:44:52,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:44:52" (1/1) ... [2022-07-13 17:44:52,746 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:44:52" (1/1) ... [2022-07-13 17:44:52,784 INFO L137 Inliner]: procedures = 124, calls = 190, calls flagged for inlining = 52, calls inlined = 44, statements flattened = 819 [2022-07-13 17:44:52,791 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 17:44:52,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 17:44:52,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 17:44:52,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 17:44:52,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:44:52" (1/1) ... [2022-07-13 17:44:52,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:44:52" (1/1) ... [2022-07-13 17:44:52,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:44:52" (1/1) ... [2022-07-13 17:44:52,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:44:52" (1/1) ... [2022-07-13 17:44:52,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:44:52" (1/1) ... [2022-07-13 17:44:52,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:44:52" (1/1) ... [2022-07-13 17:44:52,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:44:52" (1/1) ... [2022-07-13 17:44:52,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 17:44:52,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 17:44:52,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 17:44:52,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 17:44:52,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:44:52" (1/1) ... [2022-07-13 17:44:52,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:44:52,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:44:52,872 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 17:44:52,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 17:44:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-13 17:44:52,899 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-13 17:44:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-13 17:44:52,899 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-13 17:44:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-07-13 17:44:52,899 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-07-13 17:44:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-13 17:44:52,900 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-13 17:44:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-07-13 17:44:52,900 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-07-13 17:44:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-13 17:44:52,900 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-13 17:44:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-13 17:44:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-07-13 17:44:52,900 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-07-13 17:44:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-13 17:44:52,900 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-13 17:44:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 17:44:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-07-13 17:44:52,900 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-07-13 17:44:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-13 17:44:52,900 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-13 17:44:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-13 17:44:52,900 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-13 17:44:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-13 17:44:52,901 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-13 17:44:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-07-13 17:44:52,901 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-07-13 17:44:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-07-13 17:44:52,901 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-07-13 17:44:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-13 17:44:52,901 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-13 17:44:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-13 17:44:52,901 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-13 17:44:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 17:44:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-13 17:44:52,901 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-13 17:44:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 17:44:52,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 17:44:53,082 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 17:44:53,083 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 17:44:53,581 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 17:44:53,587 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 17:44:53,595 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 17:44:53,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:44:53 BoogieIcfgContainer [2022-07-13 17:44:53,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 17:44:53,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 17:44:53,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 17:44:53,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 17:44:53,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 05:44:52" (1/3) ... [2022-07-13 17:44:53,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8ccdc61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:44:53, skipping insertion in model container [2022-07-13 17:44:53,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:44:52" (2/3) ... [2022-07-13 17:44:53,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8ccdc61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:44:53, skipping insertion in model container [2022-07-13 17:44:53,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:44:53" (3/3) ... [2022-07-13 17:44:53,605 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product13.cil.c [2022-07-13 17:44:53,615 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 17:44:53,615 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 17:44:53,663 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 17:44:53,670 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5bbb7dec, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@70ad0eca [2022-07-13 17:44:53,670 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 17:44:53,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 278 states, 221 states have (on average 1.5475113122171946) internal successors, (342), 223 states have internal predecessors, (342), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-13 17:44:53,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 17:44:53,701 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:44:53,702 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:44:53,702 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:44:53,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:44:53,706 INFO L85 PathProgramCache]: Analyzing trace with hash -313384498, now seen corresponding path program 1 times [2022-07-13 17:44:53,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:44:53,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140155236] [2022-07-13 17:44:53,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:44:53,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:44:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:53,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:44:53,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:54,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:44:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:54,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:44:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:54,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:44:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:54,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:44:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:54,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:44:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:54,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 17:44:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:54,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 17:44:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:54,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:44:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:54,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 17:44:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:54,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 17:44:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:54,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 17:44:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:54,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 17:44:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:54,091 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-13 17:44:54,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:44:54,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140155236] [2022-07-13 17:44:54,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140155236] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:44:54,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700496770] [2022-07-13 17:44:54,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:44:54,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:44:54,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:44:54,096 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:44:54,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 17:44:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:54,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 1012 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 17:44:54,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:44:54,376 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 17:44:54,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:44:54,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700496770] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:44:54,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:44:54,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2022-07-13 17:44:54,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882239110] [2022-07-13 17:44:54,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:44:54,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 17:44:54,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:44:54,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 17:44:54,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:44:54,408 INFO L87 Difference]: Start difference. First operand has 278 states, 221 states have (on average 1.5475113122171946) internal successors, (342), 223 states have internal predecessors, (342), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:44:54,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:44:54,437 INFO L93 Difference]: Finished difference Result 407 states and 598 transitions. [2022-07-13 17:44:54,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 17:44:54,440 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 105 [2022-07-13 17:44:54,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:44:54,449 INFO L225 Difference]: With dead ends: 407 [2022-07-13 17:44:54,450 INFO L226 Difference]: Without dead ends: 271 [2022-07-13 17:44:54,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:44:54,456 INFO L413 NwaCegarLoop]: 414 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, 414 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:44:54,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:44:54,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-07-13 17:44:54,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2022-07-13 17:44:54,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 215 states have (on average 1.5395348837209302) internal successors, (331), 216 states have internal predecessors, (331), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-13 17:44:54,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 406 transitions. [2022-07-13 17:44:54,509 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 406 transitions. Word has length 105 [2022-07-13 17:44:54,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:44:54,510 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 406 transitions. [2022-07-13 17:44:54,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:44:54,510 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 406 transitions. [2022-07-13 17:44:54,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 17:44:54,513 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:44:54,513 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:44:54,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 17:44:54,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-13 17:44:54,714 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:44:54,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:44:54,715 INFO L85 PathProgramCache]: Analyzing trace with hash 911408720, now seen corresponding path program 1 times [2022-07-13 17:44:54,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:44:54,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076720251] [2022-07-13 17:44:54,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:44:54,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:44:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:54,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:44:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:54,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:44:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:54,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:44:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:54,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:44:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:54,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:44:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:54,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:44:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:54,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 17:44:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:54,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:44:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:54,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 17:44:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:54,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:44:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:54,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 17:44:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:54,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 17:44:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:54,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 17:44:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:54,816 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-13 17:44:54,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:44:54,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076720251] [2022-07-13 17:44:54,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076720251] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:44:54,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845576526] [2022-07-13 17:44:54,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:44:54,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:44:54,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:44:54,818 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:44:54,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 17:44:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:55,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 17:44:55,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:44:55,058 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 17:44:55,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:44:55,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845576526] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:44:55,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:44:55,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-13 17:44:55,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795243754] [2022-07-13 17:44:55,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:44:55,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 17:44:55,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:44:55,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 17:44:55,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:44:55,061 INFO L87 Difference]: Start difference. First operand 271 states and 406 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:44:55,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:44:55,107 INFO L93 Difference]: Finished difference Result 397 states and 579 transitions. [2022-07-13 17:44:55,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 17:44:55,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 106 [2022-07-13 17:44:55,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:44:55,111 INFO L225 Difference]: With dead ends: 397 [2022-07-13 17:44:55,111 INFO L226 Difference]: Without dead ends: 274 [2022-07-13 17:44:55,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:44:55,113 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 1 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:44:55,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 806 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:44:55,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-07-13 17:44:55,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 273. [2022-07-13 17:44:55,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 217 states have (on average 1.5345622119815667) internal successors, (333), 218 states have internal predecessors, (333), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-13 17:44:55,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 408 transitions. [2022-07-13 17:44:55,131 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 408 transitions. Word has length 106 [2022-07-13 17:44:55,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:44:55,132 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 408 transitions. [2022-07-13 17:44:55,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:44:55,132 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 408 transitions. [2022-07-13 17:44:55,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-13 17:44:55,134 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:44:55,134 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:44:55,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 17:44:55,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-13 17:44:55,347 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:44:55,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:44:55,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1386569223, now seen corresponding path program 1 times [2022-07-13 17:44:55,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:44:55,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129582089] [2022-07-13 17:44:55,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:44:55,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:44:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:55,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:44:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:55,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:44:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:55,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:44:55,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:55,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:44:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:55,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:44:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:55,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:44:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:55,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 17:44:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:55,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 17:44:55,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:55,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:44:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:55,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 17:44:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:55,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 17:44:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:55,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 17:44:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:55,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 17:44:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:55,514 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 17:44:55,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:44:55,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129582089] [2022-07-13 17:44:55,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129582089] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:44:55,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727522535] [2022-07-13 17:44:55,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:44:55,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:44:55,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:44:55,532 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:44:55,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 17:44:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:55,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:44:55,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:44:55,775 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 17:44:55,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:44:55,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727522535] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:44:55,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:44:55,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-13 17:44:55,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50195775] [2022-07-13 17:44:55,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:44:55,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 17:44:55,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:44:55,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 17:44:55,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:44:55,778 INFO L87 Difference]: Start difference. First operand 273 states and 408 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:44:55,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:44:55,813 INFO L93 Difference]: Finished difference Result 571 states and 867 transitions. [2022-07-13 17:44:55,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 17:44:55,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 112 [2022-07-13 17:44:55,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:44:55,815 INFO L225 Difference]: With dead ends: 571 [2022-07-13 17:44:55,815 INFO L226 Difference]: Without dead ends: 325 [2022-07-13 17:44:55,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:44:55,818 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 99 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:44:55,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 780 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:44:55,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-07-13 17:44:55,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 317. [2022-07-13 17:44:55,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 250 states have (on average 1.548) internal successors, (387), 251 states have internal predecessors, (387), 49 states have call successors, (49), 17 states have call predecessors, (49), 17 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-07-13 17:44:55,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 484 transitions. [2022-07-13 17:44:55,833 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 484 transitions. Word has length 112 [2022-07-13 17:44:55,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:44:55,833 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 484 transitions. [2022-07-13 17:44:55,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:44:55,833 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 484 transitions. [2022-07-13 17:44:55,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 17:44:55,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:44:55,835 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:44:55,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 17:44:56,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:44:56,049 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:44:56,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:44:56,049 INFO L85 PathProgramCache]: Analyzing trace with hash 208664483, now seen corresponding path program 1 times [2022-07-13 17:44:56,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:44:56,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256464689] [2022-07-13 17:44:56,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:44:56,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:44:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:44:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:44:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:44:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:44:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:44:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:44:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 17:44:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 17:44:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 17:44:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 17:44:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 17:44:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 17:44:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 17:44:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,159 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 17:44:56,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:44:56,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256464689] [2022-07-13 17:44:56,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256464689] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:44:56,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053712809] [2022-07-13 17:44:56,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:44:56,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:44:56,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:44:56,174 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:44:56,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 17:44:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 17:44:56,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:44:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 17:44:56,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:44:56,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053712809] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:44:56,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:44:56,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-07-13 17:44:56,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432296481] [2022-07-13 17:44:56,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:44:56,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 17:44:56,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:44:56,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 17:44:56,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:44:56,409 INFO L87 Difference]: Start difference. First operand 317 states and 484 transitions. Second operand has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:44:56,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:44:56,452 INFO L93 Difference]: Finished difference Result 625 states and 958 transitions. [2022-07-13 17:44:56,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:44:56,453 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2022-07-13 17:44:56,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:44:56,457 INFO L225 Difference]: With dead ends: 625 [2022-07-13 17:44:56,457 INFO L226 Difference]: Without dead ends: 319 [2022-07-13 17:44:56,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:44:56,459 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 117 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:44:56,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1451 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:44:56,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-07-13 17:44:56,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2022-07-13 17:44:56,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 251 states have (on average 1.545816733067729) internal successors, (388), 253 states have internal predecessors, (388), 49 states have call successors, (49), 17 states have call predecessors, (49), 18 states have return successors, (50), 48 states have call predecessors, (50), 48 states have call successors, (50) [2022-07-13 17:44:56,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 487 transitions. [2022-07-13 17:44:56,473 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 487 transitions. Word has length 113 [2022-07-13 17:44:56,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:44:56,473 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 487 transitions. [2022-07-13 17:44:56,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:44:56,473 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 487 transitions. [2022-07-13 17:44:56,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-13 17:44:56,475 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:44:56,475 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:44:56,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 17:44:56,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:44:56,695 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:44:56,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:44:56,696 INFO L85 PathProgramCache]: Analyzing trace with hash 986410081, now seen corresponding path program 1 times [2022-07-13 17:44:56,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:44:56,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254149934] [2022-07-13 17:44:56,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:44:56,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:44:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:44:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:44:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:44:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:44:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 17:44:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:44:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 17:44:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:44:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 17:44:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 17:44:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 17:44:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 17:44:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 17:44:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:56,808 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 17:44:56,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:44:56,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254149934] [2022-07-13 17:44:56,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254149934] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:44:56,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699628289] [2022-07-13 17:44:56,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:44:56,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:44:56,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:44:56,810 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:44:56,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 17:44:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:57,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 17:44:57,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:44:57,073 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 17:44:57,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:44:57,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699628289] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:44:57,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:44:57,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-07-13 17:44:57,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617126761] [2022-07-13 17:44:57,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:44:57,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 17:44:57,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:44:57,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 17:44:57,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:44:57,076 INFO L87 Difference]: Start difference. First operand 319 states and 487 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:44:57,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:44:57,130 INFO L93 Difference]: Finished difference Result 627 states and 963 transitions. [2022-07-13 17:44:57,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:44:57,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2022-07-13 17:44:57,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:44:57,134 INFO L225 Difference]: With dead ends: 627 [2022-07-13 17:44:57,134 INFO L226 Difference]: Without dead ends: 321 [2022-07-13 17:44:57,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:44:57,137 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 116 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:44:57,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1440 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:44:57,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-07-13 17:44:57,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2022-07-13 17:44:57,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 252 states have (on average 1.5436507936507937) internal successors, (389), 255 states have internal predecessors, (389), 49 states have call successors, (49), 17 states have call predecessors, (49), 19 states have return successors, (55), 48 states have call predecessors, (55), 48 states have call successors, (55) [2022-07-13 17:44:57,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 493 transitions. [2022-07-13 17:44:57,154 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 493 transitions. Word has length 114 [2022-07-13 17:44:57,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:44:57,155 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 493 transitions. [2022-07-13 17:44:57,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:44:57,155 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 493 transitions. [2022-07-13 17:44:57,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-13 17:44:57,157 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:44:57,157 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:44:57,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 17:44:57,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:44:57,375 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:44:57,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:44:57,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1984465576, now seen corresponding path program 1 times [2022-07-13 17:44:57,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:44:57,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91161250] [2022-07-13 17:44:57,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:44:57,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:44:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:57,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:44:57,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:57,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:44:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:57,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:44:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:57,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:44:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:57,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:44:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:57,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-13 17:44:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:57,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:44:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:57,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:44:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:57,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-13 17:44:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:57,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 17:44:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:57,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 17:44:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:57,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 17:44:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:57,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 17:44:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:57,461 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 17:44:57,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:44:57,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91161250] [2022-07-13 17:44:57,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91161250] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:44:57,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:44:57,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 17:44:57,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446706522] [2022-07-13 17:44:57,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:44:57,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 17:44:57,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:44:57,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 17:44:57,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:44:57,464 INFO L87 Difference]: Start difference. First operand 321 states and 493 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:44:58,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:44:58,297 INFO L93 Difference]: Finished difference Result 677 states and 1045 transitions. [2022-07-13 17:44:58,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:44:58,298 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2022-07-13 17:44:58,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:44:58,300 INFO L225 Difference]: With dead ends: 677 [2022-07-13 17:44:58,300 INFO L226 Difference]: Without dead ends: 379 [2022-07-13 17:44:58,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:44:58,301 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 742 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:44:58,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 1093 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 17:44:58,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-07-13 17:44:58,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 321. [2022-07-13 17:44:58,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 252 states have (on average 1.5436507936507937) internal successors, (389), 255 states have internal predecessors, (389), 49 states have call successors, (49), 17 states have call predecessors, (49), 19 states have return successors, (54), 48 states have call predecessors, (54), 48 states have call successors, (54) [2022-07-13 17:44:58,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 492 transitions. [2022-07-13 17:44:58,314 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 492 transitions. Word has length 115 [2022-07-13 17:44:58,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:44:58,314 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 492 transitions. [2022-07-13 17:44:58,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:44:58,315 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 492 transitions. [2022-07-13 17:44:58,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-13 17:44:58,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:44:58,316 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:44:58,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 17:44:58,317 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:44:58,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:44:58,317 INFO L85 PathProgramCache]: Analyzing trace with hash 808233348, now seen corresponding path program 2 times [2022-07-13 17:44:58,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:44:58,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371524075] [2022-07-13 17:44:58,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:44:58,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:44:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:58,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:44:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:58,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:44:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:58,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:44:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:58,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:44:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:58,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:44:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:58,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 17:44:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:58,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 17:44:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:58,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 17:44:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:58,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 17:44:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:58,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 17:44:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:58,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 17:44:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:58,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 17:44:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:58,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 17:44:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:58,399 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 17:44:58,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:44:58,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371524075] [2022-07-13 17:44:58,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371524075] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:44:58,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:44:58,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 17:44:58,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400759166] [2022-07-13 17:44:58,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:44:58,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 17:44:58,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:44:58,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 17:44:58,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:44:58,400 INFO L87 Difference]: Start difference. First operand 321 states and 492 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:44:59,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:44:59,225 INFO L93 Difference]: Finished difference Result 679 states and 1048 transitions. [2022-07-13 17:44:59,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:44:59,226 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 116 [2022-07-13 17:44:59,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:44:59,229 INFO L225 Difference]: With dead ends: 679 [2022-07-13 17:44:59,229 INFO L226 Difference]: Without dead ends: 381 [2022-07-13 17:44:59,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:44:59,232 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 738 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 1455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:44:59,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 1094 Invalid, 1455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 17:44:59,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-07-13 17:44:59,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 323. [2022-07-13 17:44:59,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 253 states have (on average 1.541501976284585) internal successors, (390), 257 states have internal predecessors, (390), 49 states have call successors, (49), 17 states have call predecessors, (49), 20 states have return successors, (56), 48 states have call predecessors, (56), 48 states have call successors, (56) [2022-07-13 17:44:59,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 495 transitions. [2022-07-13 17:44:59,262 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 495 transitions. Word has length 116 [2022-07-13 17:44:59,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:44:59,263 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 495 transitions. [2022-07-13 17:44:59,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:44:59,263 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 495 transitions. [2022-07-13 17:44:59,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-13 17:44:59,265 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:44:59,265 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:44:59,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 17:44:59,266 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:44:59,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:44:59,266 INFO L85 PathProgramCache]: Analyzing trace with hash 355144749, now seen corresponding path program 1 times [2022-07-13 17:44:59,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:44:59,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520887798] [2022-07-13 17:44:59,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:44:59,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:44:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:59,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:44:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:59,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:44:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:59,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:44:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:59,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:44:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:59,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:44:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:59,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:44:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:59,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 17:44:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:59,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 17:44:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:59,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 17:44:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:59,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 17:44:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:59,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 17:44:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:59,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 17:44:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:59,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-13 17:44:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:44:59,385 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 17:44:59,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:44:59,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520887798] [2022-07-13 17:44:59,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520887798] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:44:59,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:44:59,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 17:44:59,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942035933] [2022-07-13 17:44:59,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:44:59,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 17:44:59,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:44:59,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 17:44:59,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:44:59,386 INFO L87 Difference]: Start difference. First operand 323 states and 495 transitions. Second operand has 11 states, 10 states have (on average 8.1) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-13 17:45:00,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:45:00,588 INFO L93 Difference]: Finished difference Result 677 states and 1043 transitions. [2022-07-13 17:45:00,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 17:45:00,588 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.1) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 117 [2022-07-13 17:45:00,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:45:00,591 INFO L225 Difference]: With dead ends: 677 [2022-07-13 17:45:00,592 INFO L226 Difference]: Without dead ends: 381 [2022-07-13 17:45:00,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-07-13 17:45:00,593 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 844 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:45:00,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 1374 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 17:45:00,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-07-13 17:45:00,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 323. [2022-07-13 17:45:00,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 253 states have (on average 1.541501976284585) internal successors, (390), 257 states have internal predecessors, (390), 49 states have call successors, (49), 17 states have call predecessors, (49), 20 states have return successors, (55), 48 states have call predecessors, (55), 48 states have call successors, (55) [2022-07-13 17:45:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 494 transitions. [2022-07-13 17:45:00,609 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 494 transitions. Word has length 117 [2022-07-13 17:45:00,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:45:00,610 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 494 transitions. [2022-07-13 17:45:00,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.1) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-13 17:45:00,610 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 494 transitions. [2022-07-13 17:45:00,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-13 17:45:00,612 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:45:00,612 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:45:00,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 17:45:00,612 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:45:00,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:45:00,612 INFO L85 PathProgramCache]: Analyzing trace with hash -675608032, now seen corresponding path program 2 times [2022-07-13 17:45:00,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:45:00,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387213771] [2022-07-13 17:45:00,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:45:00,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:45:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:00,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:45:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:00,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:45:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:00,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:45:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:00,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:45:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:00,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:45:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:00,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:45:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:00,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 17:45:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:00,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:45:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:00,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 17:45:00,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:00,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 17:45:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:00,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 17:45:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:00,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 17:45:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:00,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 17:45:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:00,730 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 17:45:00,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:45:00,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387213771] [2022-07-13 17:45:00,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387213771] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:45:00,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:45:00,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 17:45:00,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977792281] [2022-07-13 17:45:00,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:45:00,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 17:45:00,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:45:00,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 17:45:00,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:45:00,732 INFO L87 Difference]: Start difference. First operand 323 states and 494 transitions. Second operand has 11 states, 10 states have (on average 8.2) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-13 17:45:01,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:45:01,983 INFO L93 Difference]: Finished difference Result 679 states and 1049 transitions. [2022-07-13 17:45:01,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 17:45:01,984 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.2) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 118 [2022-07-13 17:45:01,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:45:01,986 INFO L225 Difference]: With dead ends: 679 [2022-07-13 17:45:01,986 INFO L226 Difference]: Without dead ends: 383 [2022-07-13 17:45:01,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-07-13 17:45:01,987 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 840 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 2372 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 2604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 2372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:45:01,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 1375 Invalid, 2604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 2372 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 17:45:01,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-07-13 17:45:02,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 325. [2022-07-13 17:45:02,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 254 states have (on average 1.5393700787401574) internal successors, (391), 259 states have internal predecessors, (391), 49 states have call successors, (49), 17 states have call predecessors, (49), 21 states have return successors, (60), 48 states have call predecessors, (60), 48 states have call successors, (60) [2022-07-13 17:45:02,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 500 transitions. [2022-07-13 17:45:02,003 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 500 transitions. Word has length 118 [2022-07-13 17:45:02,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:45:02,003 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 500 transitions. [2022-07-13 17:45:02,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.2) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-13 17:45:02,003 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 500 transitions. [2022-07-13 17:45:02,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-13 17:45:02,005 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:45:02,005 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:45:02,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 17:45:02,005 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:45:02,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:45:02,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1771087954, now seen corresponding path program 1 times [2022-07-13 17:45:02,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:45:02,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788624573] [2022-07-13 17:45:02,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:45:02,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:45:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:02,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:45:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:02,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:45:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:02,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:45:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:02,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:45:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:02,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:45:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:02,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:45:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:02,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:45:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:02,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 17:45:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:02,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 17:45:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:02,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 17:45:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:02,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 17:45:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:02,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 17:45:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:02,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 17:45:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:02,085 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:45:02,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:45:02,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788624573] [2022-07-13 17:45:02,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788624573] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:45:02,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597554185] [2022-07-13 17:45:02,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:45:02,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:45:02,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:45:02,087 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:45:02,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 17:45:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:02,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:45:02,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:45:02,301 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:45:02,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 17:45:02,359 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:45:02,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597554185] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 17:45:02,359 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 17:45:02,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2022-07-13 17:45:02,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234682794] [2022-07-13 17:45:02,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 17:45:02,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 17:45:02,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:45:02,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 17:45:02,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:45:02,361 INFO L87 Difference]: Start difference. First operand 325 states and 500 transitions. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 7 states have internal predecessors, (113), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 17:45:03,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:45:03,443 INFO L93 Difference]: Finished difference Result 833 states and 1347 transitions. [2022-07-13 17:45:03,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 17:45:03,444 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 7 states have internal predecessors, (113), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 119 [2022-07-13 17:45:03,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:45:03,447 INFO L225 Difference]: With dead ends: 833 [2022-07-13 17:45:03,447 INFO L226 Difference]: Without dead ends: 710 [2022-07-13 17:45:03,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:45:03,448 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 933 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:45:03,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [978 Valid, 1455 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 1537 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 17:45:03,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-07-13 17:45:03,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 628. [2022-07-13 17:45:03,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 493 states have (on average 1.6004056795131847) internal successors, (789), 498 states have internal predecessors, (789), 113 states have call successors, (113), 17 states have call predecessors, (113), 21 states have return successors, (134), 112 states have call predecessors, (134), 112 states have call successors, (134) [2022-07-13 17:45:03,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1036 transitions. [2022-07-13 17:45:03,473 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1036 transitions. Word has length 119 [2022-07-13 17:45:03,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:45:03,473 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 1036 transitions. [2022-07-13 17:45:03,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 7 states have internal predecessors, (113), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 17:45:03,473 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1036 transitions. [2022-07-13 17:45:03,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-13 17:45:03,476 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:45:03,476 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:45:03,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-13 17:45:03,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:45:03,692 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:45:03,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:45:03,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1209872817, now seen corresponding path program 1 times [2022-07-13 17:45:03,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:45:03,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519250687] [2022-07-13 17:45:03,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:45:03,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:45:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:03,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:45:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:03,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:45:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:03,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:45:03,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:03,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:45:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:03,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:45:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:03,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:45:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:03,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 17:45:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:03,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 17:45:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:03,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 17:45:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:03,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 17:45:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:03,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 17:45:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:03,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 17:45:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:03,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-13 17:45:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:03,765 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:45:03,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:45:03,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519250687] [2022-07-13 17:45:03,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519250687] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:45:03,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:45:03,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:45:03,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939405073] [2022-07-13 17:45:03,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:45:03,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:45:03,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:45:03,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:45:03,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:45:03,767 INFO L87 Difference]: Start difference. First operand 628 states and 1036 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:45:04,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:45:04,437 INFO L93 Difference]: Finished difference Result 1554 states and 2626 transitions. [2022-07-13 17:45:04,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:45:04,439 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2022-07-13 17:45:04,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:45:04,444 INFO L225 Difference]: With dead ends: 1554 [2022-07-13 17:45:04,444 INFO L226 Difference]: Without dead ends: 994 [2022-07-13 17:45:04,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:45:04,446 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 731 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 17:45:04,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 974 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 17:45:04,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2022-07-13 17:45:04,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 928. [2022-07-13 17:45:04,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 729 states have (on average 1.6104252400548698) internal successors, (1174), 734 states have internal predecessors, (1174), 177 states have call successors, (177), 17 states have call predecessors, (177), 21 states have return successors, (208), 176 states have call predecessors, (208), 176 states have call successors, (208) [2022-07-13 17:45:04,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1559 transitions. [2022-07-13 17:45:04,484 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1559 transitions. Word has length 125 [2022-07-13 17:45:04,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:45:04,484 INFO L495 AbstractCegarLoop]: Abstraction has 928 states and 1559 transitions. [2022-07-13 17:45:04,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:45:04,485 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1559 transitions. [2022-07-13 17:45:04,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-13 17:45:04,488 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:45:04,488 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:45:04,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 17:45:04,488 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:45:04,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:45:04,489 INFO L85 PathProgramCache]: Analyzing trace with hash -2036554710, now seen corresponding path program 1 times [2022-07-13 17:45:04,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:45:04,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500789514] [2022-07-13 17:45:04,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:45:04,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:45:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:04,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:45:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:04,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:45:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:04,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:45:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:04,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:45:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:04,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:45:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:04,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:45:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:04,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:45:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:04,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 17:45:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:04,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 17:45:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:04,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 17:45:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:04,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 17:45:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:04,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 17:45:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:04,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 17:45:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:04,574 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:45:04,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:45:04,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500789514] [2022-07-13 17:45:04,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500789514] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:45:04,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:45:04,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:45:04,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654405145] [2022-07-13 17:45:04,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:45:04,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:45:04,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:45:04,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:45:04,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:45:04,575 INFO L87 Difference]: Start difference. First operand 928 states and 1559 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:45:05,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:45:05,231 INFO L93 Difference]: Finished difference Result 2269 states and 3871 transitions. [2022-07-13 17:45:05,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:45:05,232 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2022-07-13 17:45:05,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:45:05,239 INFO L225 Difference]: With dead ends: 2269 [2022-07-13 17:45:05,239 INFO L226 Difference]: Without dead ends: 1462 [2022-07-13 17:45:05,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:45:05,243 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 729 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 17:45:05,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 947 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 17:45:05,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2022-07-13 17:45:05,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1396. [2022-07-13 17:45:05,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1102 states have (on average 1.616152450090744) internal successors, (1781), 1107 states have internal predecessors, (1781), 272 states have call successors, (272), 17 states have call predecessors, (272), 21 states have return successors, (303), 271 states have call predecessors, (303), 271 states have call successors, (303) [2022-07-13 17:45:05,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 2356 transitions. [2022-07-13 17:45:05,308 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 2356 transitions. Word has length 126 [2022-07-13 17:45:05,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:45:05,309 INFO L495 AbstractCegarLoop]: Abstraction has 1396 states and 2356 transitions. [2022-07-13 17:45:05,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:45:05,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 2356 transitions. [2022-07-13 17:45:05,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-13 17:45:05,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:45:05,316 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:45:05,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 17:45:05,316 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:45:05,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:45:05,316 INFO L85 PathProgramCache]: Analyzing trace with hash 755234193, now seen corresponding path program 1 times [2022-07-13 17:45:05,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:45:05,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081192803] [2022-07-13 17:45:05,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:45:05,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:45:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:05,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:45:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:05,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:45:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:05,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:45:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:05,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:45:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:05,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:45:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:05,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:45:05,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:05,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 17:45:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:05,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 17:45:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:05,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 17:45:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:05,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 17:45:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:05,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 17:45:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:05,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 17:45:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:05,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 17:45:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:05,380 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:45:05,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:45:05,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081192803] [2022-07-13 17:45:05,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081192803] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:45:05,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:45:05,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:45:05,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204055769] [2022-07-13 17:45:05,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:45:05,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:45:05,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:45:05,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:45:05,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:45:05,382 INFO L87 Difference]: Start difference. First operand 1396 states and 2356 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:45:06,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:45:06,038 INFO L93 Difference]: Finished difference Result 3316 states and 5712 transitions. [2022-07-13 17:45:06,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:45:06,038 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2022-07-13 17:45:06,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:45:06,047 INFO L225 Difference]: With dead ends: 3316 [2022-07-13 17:45:06,047 INFO L226 Difference]: Without dead ends: 2166 [2022-07-13 17:45:06,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:45:06,050 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 727 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:45:06,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 945 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 17:45:06,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2022-07-13 17:45:06,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 2100. [2022-07-13 17:45:06,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2100 states, 1683 states have (on average 1.6209150326797386) internal successors, (2728), 1688 states have internal predecessors, (2728), 395 states have call successors, (395), 17 states have call predecessors, (395), 21 states have return successors, (442), 394 states have call predecessors, (442), 394 states have call successors, (442) [2022-07-13 17:45:06,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 3565 transitions. [2022-07-13 17:45:06,121 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 3565 transitions. Word has length 127 [2022-07-13 17:45:06,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:45:06,121 INFO L495 AbstractCegarLoop]: Abstraction has 2100 states and 3565 transitions. [2022-07-13 17:45:06,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:45:06,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 3565 transitions. [2022-07-13 17:45:06,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-13 17:45:06,129 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:45:06,129 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:45:06,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 17:45:06,129 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:45:06,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:45:06,129 INFO L85 PathProgramCache]: Analyzing trace with hash -795510101, now seen corresponding path program 1 times [2022-07-13 17:45:06,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:45:06,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130142592] [2022-07-13 17:45:06,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:45:06,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:45:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:06,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:45:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:06,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:45:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:06,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:45:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:06,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:45:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:06,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:45:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:06,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:45:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:06,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:45:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:06,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 17:45:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:06,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 17:45:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:06,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 17:45:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:06,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 17:45:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:06,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 17:45:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:06,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 17:45:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:06,186 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:45:06,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:45:06,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130142592] [2022-07-13 17:45:06,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130142592] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:45:06,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:45:06,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:45:06,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177260942] [2022-07-13 17:45:06,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:45:06,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:45:06,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:45:06,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:45:06,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:45:06,188 INFO L87 Difference]: Start difference. First operand 2100 states and 3565 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:45:06,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:45:06,943 INFO L93 Difference]: Finished difference Result 4935 states and 8566 transitions. [2022-07-13 17:45:06,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:45:06,944 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2022-07-13 17:45:06,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:45:06,958 INFO L225 Difference]: With dead ends: 4935 [2022-07-13 17:45:06,959 INFO L226 Difference]: Without dead ends: 3285 [2022-07-13 17:45:06,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:45:06,966 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 725 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 17:45:06,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 945 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 17:45:06,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3285 states. [2022-07-13 17:45:07,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3285 to 3219. [2022-07-13 17:45:07,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3219 states, 2623 states have (on average 1.6237133053755242) internal successors, (4259), 2628 states have internal predecessors, (4259), 574 states have call successors, (574), 17 states have call predecessors, (574), 21 states have return successors, (647), 573 states have call predecessors, (647), 573 states have call successors, (647) [2022-07-13 17:45:07,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3219 states to 3219 states and 5480 transitions. [2022-07-13 17:45:07,111 INFO L78 Accepts]: Start accepts. Automaton has 3219 states and 5480 transitions. Word has length 128 [2022-07-13 17:45:07,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:45:07,111 INFO L495 AbstractCegarLoop]: Abstraction has 3219 states and 5480 transitions. [2022-07-13 17:45:07,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:45:07,111 INFO L276 IsEmpty]: Start isEmpty. Operand 3219 states and 5480 transitions. [2022-07-13 17:45:07,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-13 17:45:07,126 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:45:07,127 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:45:07,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 17:45:07,127 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:45:07,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:45:07,127 INFO L85 PathProgramCache]: Analyzing trace with hash 2137708781, now seen corresponding path program 1 times [2022-07-13 17:45:07,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:45:07,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932924511] [2022-07-13 17:45:07,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:45:07,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:45:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:07,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:45:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:07,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:45:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:07,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:45:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:07,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:45:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:07,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:45:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:07,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:45:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:07,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 17:45:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:07,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 17:45:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:07,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 17:45:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:07,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 17:45:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:07,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 17:45:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:07,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 17:45:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:07,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 17:45:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:07,183 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:45:07,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:45:07,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932924511] [2022-07-13 17:45:07,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932924511] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:45:07,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:45:07,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:45:07,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516908560] [2022-07-13 17:45:07,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:45:07,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:45:07,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:45:07,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:45:07,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:45:07,184 INFO L87 Difference]: Start difference. First operand 3219 states and 5480 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:45:07,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:45:07,924 INFO L93 Difference]: Finished difference Result 7853 states and 13665 transitions. [2022-07-13 17:45:07,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:45:07,925 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2022-07-13 17:45:07,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:45:07,945 INFO L225 Difference]: With dead ends: 7853 [2022-07-13 17:45:07,946 INFO L226 Difference]: Without dead ends: 5316 [2022-07-13 17:45:07,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:45:07,954 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 723 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:45:07,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 972 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 17:45:07,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5316 states. [2022-07-13 17:45:08,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5316 to 5250. [2022-07-13 17:45:08,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5250 states, 4278 states have (on average 1.6154745208041141) internal successors, (6911), 4283 states have internal predecessors, (6911), 950 states have call successors, (950), 17 states have call predecessors, (950), 21 states have return successors, (1067), 949 states have call predecessors, (1067), 949 states have call successors, (1067) [2022-07-13 17:45:08,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5250 states to 5250 states and 8928 transitions. [2022-07-13 17:45:08,211 INFO L78 Accepts]: Start accepts. Automaton has 5250 states and 8928 transitions. Word has length 129 [2022-07-13 17:45:08,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:45:08,212 INFO L495 AbstractCegarLoop]: Abstraction has 5250 states and 8928 transitions. [2022-07-13 17:45:08,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:45:08,222 INFO L276 IsEmpty]: Start isEmpty. Operand 5250 states and 8928 transitions. [2022-07-13 17:45:08,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-13 17:45:08,236 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:45:08,236 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:45:08,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 17:45:08,236 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:45:08,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:45:08,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1854632113, now seen corresponding path program 1 times [2022-07-13 17:45:08,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:45:08,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491325689] [2022-07-13 17:45:08,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:45:08,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:45:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:08,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:45:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:08,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:45:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:08,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:45:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:08,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:45:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:08,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:45:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:08,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:45:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:08,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 17:45:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:08,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 17:45:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:08,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 17:45:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:08,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 17:45:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:08,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-13 17:45:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:08,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 17:45:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:08,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-13 17:45:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:08,299 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:45:08,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:45:08,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491325689] [2022-07-13 17:45:08,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491325689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:45:08,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:45:08,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:45:08,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802620309] [2022-07-13 17:45:08,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:45:08,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:45:08,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:45:08,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:45:08,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:45:08,302 INFO L87 Difference]: Start difference. First operand 5250 states and 8928 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:45:09,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:45:09,149 INFO L93 Difference]: Finished difference Result 12995 states and 22574 transitions. [2022-07-13 17:45:09,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:45:09,149 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2022-07-13 17:45:09,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:45:09,187 INFO L225 Difference]: With dead ends: 12995 [2022-07-13 17:45:09,187 INFO L226 Difference]: Without dead ends: 8804 [2022-07-13 17:45:09,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:45:09,201 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 721 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:45:09,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 948 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 17:45:09,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8804 states. [2022-07-13 17:45:09,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8804 to 8738. [2022-07-13 17:45:09,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8738 states, 7160 states have (on average 1.6124301675977655) internal successors, (11545), 7165 states have internal predecessors, (11545), 1556 states have call successors, (1556), 17 states have call predecessors, (1556), 21 states have return successors, (1751), 1555 states have call predecessors, (1751), 1555 states have call successors, (1751) [2022-07-13 17:45:09,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8738 states to 8738 states and 14852 transitions. [2022-07-13 17:45:09,555 INFO L78 Accepts]: Start accepts. Automaton has 8738 states and 14852 transitions. Word has length 130 [2022-07-13 17:45:09,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:45:09,556 INFO L495 AbstractCegarLoop]: Abstraction has 8738 states and 14852 transitions. [2022-07-13 17:45:09,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:45:09,556 INFO L276 IsEmpty]: Start isEmpty. Operand 8738 states and 14852 transitions. [2022-07-13 17:45:09,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-13 17:45:09,574 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:45:09,574 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:45:09,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 17:45:09,574 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:45:09,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:45:09,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1741509135, now seen corresponding path program 1 times [2022-07-13 17:45:09,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:45:09,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503017442] [2022-07-13 17:45:09,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:45:09,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:45:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:09,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:45:09,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:09,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:45:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:09,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:45:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:09,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:45:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:09,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:45:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:09,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:45:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:09,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:45:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:09,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 17:45:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:09,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 17:45:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:09,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 17:45:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:09,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 17:45:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:09,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-13 17:45:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:09,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 17:45:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:09,636 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:45:09,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:45:09,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503017442] [2022-07-13 17:45:09,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503017442] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:45:09,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:45:09,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:45:09,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443689133] [2022-07-13 17:45:09,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:45:09,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:45:09,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:45:09,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:45:09,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:45:09,638 INFO L87 Difference]: Start difference. First operand 8738 states and 14852 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:45:10,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:45:10,849 INFO L93 Difference]: Finished difference Result 22654 states and 39280 transitions. [2022-07-13 17:45:10,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:45:10,850 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 131 [2022-07-13 17:45:10,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:45:10,911 INFO L225 Difference]: With dead ends: 22654 [2022-07-13 17:45:10,911 INFO L226 Difference]: Without dead ends: 15397 [2022-07-13 17:45:10,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:45:10,939 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 719 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 17:45:10,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 978 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 17:45:10,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15397 states. [2022-07-13 17:45:11,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15397 to 15331. [2022-07-13 17:45:11,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15331 states, 12550 states have (on average 1.6024701195219124) internal successors, (20111), 12555 states have internal predecessors, (20111), 2759 states have call successors, (2759), 17 states have call predecessors, (2759), 21 states have return successors, (3098), 2758 states have call predecessors, (3098), 2758 states have call successors, (3098) [2022-07-13 17:45:11,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15331 states to 15331 states and 25968 transitions. [2022-07-13 17:45:11,577 INFO L78 Accepts]: Start accepts. Automaton has 15331 states and 25968 transitions. Word has length 131 [2022-07-13 17:45:11,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:45:11,577 INFO L495 AbstractCegarLoop]: Abstraction has 15331 states and 25968 transitions. [2022-07-13 17:45:11,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:45:11,577 INFO L276 IsEmpty]: Start isEmpty. Operand 15331 states and 25968 transitions. [2022-07-13 17:45:11,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-13 17:45:11,603 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:45:11,603 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:45:11,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 17:45:11,603 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:45:11,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:45:11,603 INFO L85 PathProgramCache]: Analyzing trace with hash -873756304, now seen corresponding path program 1 times [2022-07-13 17:45:11,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:45:11,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493688834] [2022-07-13 17:45:11,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:45:11,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:45:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:11,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:45:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:11,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:45:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:11,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:45:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:11,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:45:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:11,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:45:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:11,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:45:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:11,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:45:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:11,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 17:45:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:11,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 17:45:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:11,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 17:45:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:11,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 17:45:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:11,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 17:45:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:11,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 17:45:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:11,672 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:45:11,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:45:11,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493688834] [2022-07-13 17:45:11,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493688834] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:45:11,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:45:11,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:45:11,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168574659] [2022-07-13 17:45:11,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:45:11,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:45:11,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:45:11,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:45:11,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:45:11,674 INFO L87 Difference]: Start difference. First operand 15331 states and 25968 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:45:13,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:45:13,270 INFO L93 Difference]: Finished difference Result 40610 states and 70263 transitions. [2022-07-13 17:45:13,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:45:13,271 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 132 [2022-07-13 17:45:13,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:45:13,355 INFO L225 Difference]: With dead ends: 40610 [2022-07-13 17:45:13,355 INFO L226 Difference]: Without dead ends: 27367 [2022-07-13 17:45:13,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:45:13,390 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 717 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:45:13,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 949 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 17:45:13,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27367 states. [2022-07-13 17:45:14,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27367 to 27301. [2022-07-13 17:45:14,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27301 states, 22481 states have (on average 1.5977492104443753) internal successors, (35919), 22486 states have internal predecessors, (35919), 4798 states have call successors, (4798), 17 states have call predecessors, (4798), 21 states have return successors, (5411), 4797 states have call predecessors, (5411), 4797 states have call successors, (5411) [2022-07-13 17:45:14,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27301 states to 27301 states and 46128 transitions. [2022-07-13 17:45:14,484 INFO L78 Accepts]: Start accepts. Automaton has 27301 states and 46128 transitions. Word has length 132 [2022-07-13 17:45:14,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:45:14,485 INFO L495 AbstractCegarLoop]: Abstraction has 27301 states and 46128 transitions. [2022-07-13 17:45:14,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:45:14,485 INFO L276 IsEmpty]: Start isEmpty. Operand 27301 states and 46128 transitions. [2022-07-13 17:45:14,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-13 17:45:14,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:45:14,509 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:45:14,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 17:45:14,510 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:45:14,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:45:14,510 INFO L85 PathProgramCache]: Analyzing trace with hash -500581487, now seen corresponding path program 1 times [2022-07-13 17:45:14,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:45:14,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007478483] [2022-07-13 17:45:14,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:45:14,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:45:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:14,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:45:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:14,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:45:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:14,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:45:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:14,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:45:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:14,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:45:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:14,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:45:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:14,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 17:45:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:14,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 17:45:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:14,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 17:45:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:14,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 17:45:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:14,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 17:45:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:14,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 17:45:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:14,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-13 17:45:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:14,581 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:45:14,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:45:14,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007478483] [2022-07-13 17:45:14,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007478483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:45:14,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:45:14,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:45:14,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204629339] [2022-07-13 17:45:14,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:45:14,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:45:14,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:45:14,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:45:14,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:45:14,582 INFO L87 Difference]: Start difference. First operand 27301 states and 46128 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:45:16,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:45:16,842 INFO L93 Difference]: Finished difference Result 74397 states and 127862 transitions. [2022-07-13 17:45:16,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:45:16,843 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 133 [2022-07-13 17:45:16,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:45:16,993 INFO L225 Difference]: With dead ends: 74397 [2022-07-13 17:45:16,993 INFO L226 Difference]: Without dead ends: 49916 [2022-07-13 17:45:17,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:45:17,041 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 715 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:45:17,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 956 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 17:45:17,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49916 states. [2022-07-13 17:45:18,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49916 to 49850. [2022-07-13 17:45:18,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49850 states, 41315 states have (on average 1.5916737262495462) internal successors, (65760), 41320 states have internal predecessors, (65760), 8513 states have call successors, (8513), 17 states have call predecessors, (8513), 21 states have return successors, (9658), 8512 states have call predecessors, (9658), 8512 states have call successors, (9658) [2022-07-13 17:45:19,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49850 states to 49850 states and 83931 transitions. [2022-07-13 17:45:19,016 INFO L78 Accepts]: Start accepts. Automaton has 49850 states and 83931 transitions. Word has length 133 [2022-07-13 17:45:19,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:45:19,016 INFO L495 AbstractCegarLoop]: Abstraction has 49850 states and 83931 transitions. [2022-07-13 17:45:19,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:45:19,016 INFO L276 IsEmpty]: Start isEmpty. Operand 49850 states and 83931 transitions. [2022-07-13 17:45:19,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-13 17:45:19,049 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:45:19,049 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:45:19,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 17:45:19,049 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:45:19,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:45:19,049 INFO L85 PathProgramCache]: Analyzing trace with hash 925174768, now seen corresponding path program 1 times [2022-07-13 17:45:19,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:45:19,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21175895] [2022-07-13 17:45:19,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:45:19,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:45:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:19,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:45:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:19,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:45:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:19,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:45:19,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:19,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:45:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:19,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:45:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:19,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:45:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:19,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 17:45:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:19,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 17:45:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:19,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 17:45:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:19,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 17:45:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:19,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 17:45:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:19,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 17:45:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:19,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 17:45:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:19,114 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:45:19,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:45:19,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21175895] [2022-07-13 17:45:19,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21175895] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:45:19,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:45:19,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:45:19,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916820061] [2022-07-13 17:45:19,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:45:19,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:45:19,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:45:19,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:45:19,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:45:19,116 INFO L87 Difference]: Start difference. First operand 49850 states and 83931 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:45:22,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:45:22,396 INFO L93 Difference]: Finished difference Result 92883 states and 159993 transitions. [2022-07-13 17:45:22,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:45:22,397 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 134 [2022-07-13 17:45:22,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:45:22,723 INFO L225 Difference]: With dead ends: 92883 [2022-07-13 17:45:22,723 INFO L226 Difference]: Without dead ends: 92760 [2022-07-13 17:45:22,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:45:22,912 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 713 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:45:22,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 948 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 17:45:22,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92760 states. [2022-07-13 17:45:26,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92760 to 92694. [2022-07-13 17:45:26,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92694 states, 77360 states have (on average 1.584100310237849) internal successors, (122546), 77365 states have internal predecessors, (122546), 15312 states have call successors, (15312), 17 states have call predecessors, (15312), 21 states have return successors, (17503), 15311 states have call predecessors, (17503), 15311 states have call successors, (17503) [2022-07-13 17:45:26,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92694 states to 92694 states and 155361 transitions. [2022-07-13 17:45:26,696 INFO L78 Accepts]: Start accepts. Automaton has 92694 states and 155361 transitions. Word has length 134 [2022-07-13 17:45:26,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:45:26,696 INFO L495 AbstractCegarLoop]: Abstraction has 92694 states and 155361 transitions. [2022-07-13 17:45:26,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:45:26,696 INFO L276 IsEmpty]: Start isEmpty. Operand 92694 states and 155361 transitions. [2022-07-13 17:45:26,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-13 17:45:26,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:45:26,733 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:45:26,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 17:45:26,733 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:45:26,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:45:26,734 INFO L85 PathProgramCache]: Analyzing trace with hash -605011728, now seen corresponding path program 1 times [2022-07-13 17:45:26,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:45:26,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200068430] [2022-07-13 17:45:26,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:45:26,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:45:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:26,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:45:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:26,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:45:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:26,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:45:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:26,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:45:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:26,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:45:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:26,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:45:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:26,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:45:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:26,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 17:45:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:26,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 17:45:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:26,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 17:45:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:26,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 17:45:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:26,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 17:45:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:26,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-13 17:45:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:26,814 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:45:26,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:45:26,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200068430] [2022-07-13 17:45:26,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200068430] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:45:26,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:45:26,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 17:45:26,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675600503] [2022-07-13 17:45:26,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:45:26,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 17:45:26,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:45:26,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 17:45:26,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:45:26,816 INFO L87 Difference]: Start difference. First operand 92694 states and 155361 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:45:30,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:45:30,518 INFO L93 Difference]: Finished difference Result 92865 states and 158879 transitions. [2022-07-13 17:45:30,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 17:45:30,519 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 135 [2022-07-13 17:45:30,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:45:30,842 INFO L225 Difference]: With dead ends: 92865 [2022-07-13 17:45:30,842 INFO L226 Difference]: Without dead ends: 92752 [2022-07-13 17:45:30,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2022-07-13 17:45:30,879 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 665 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:45:30,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 1214 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 17:45:30,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92752 states. [2022-07-13 17:45:34,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92752 to 92694. [2022-07-13 17:45:34,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92694 states, 77360 states have (on average 1.5840873836608067) internal successors, (122545), 77365 states have internal predecessors, (122545), 15312 states have call successors, (15312), 17 states have call predecessors, (15312), 21 states have return successors, (17503), 15311 states have call predecessors, (17503), 15311 states have call successors, (17503) [2022-07-13 17:45:34,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92694 states to 92694 states and 155360 transitions. [2022-07-13 17:45:34,885 INFO L78 Accepts]: Start accepts. Automaton has 92694 states and 155360 transitions. Word has length 135 [2022-07-13 17:45:34,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:45:34,885 INFO L495 AbstractCegarLoop]: Abstraction has 92694 states and 155360 transitions. [2022-07-13 17:45:34,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:45:34,885 INFO L276 IsEmpty]: Start isEmpty. Operand 92694 states and 155360 transitions. [2022-07-13 17:45:34,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-13 17:45:34,929 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:45:34,929 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:45:34,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 17:45:34,929 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:45:34,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:45:34,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1455791745, now seen corresponding path program 1 times [2022-07-13 17:45:34,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:45:34,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093513327] [2022-07-13 17:45:34,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:45:34,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:45:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:34,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:45:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:34,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:45:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:34,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:45:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:34,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:45:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:34,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:45:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:34,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:45:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:35,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:45:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:35,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 17:45:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:35,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 17:45:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:35,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 17:45:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:35,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 17:45:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:35,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 17:45:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:35,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-13 17:45:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:35,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-13 17:45:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:35,018 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:45:35,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:45:35,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093513327] [2022-07-13 17:45:35,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093513327] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:45:35,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:45:35,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:45:35,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449220916] [2022-07-13 17:45:35,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:45:35,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:45:35,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:45:35,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:45:35,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:45:35,020 INFO L87 Difference]: Start difference. First operand 92694 states and 155360 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 17:45:39,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:45:39,419 INFO L93 Difference]: Finished difference Result 93064 states and 159144 transitions. [2022-07-13 17:45:39,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 17:45:39,419 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 142 [2022-07-13 17:45:39,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:45:39,688 INFO L225 Difference]: With dead ends: 93064 [2022-07-13 17:45:39,689 INFO L226 Difference]: Without dead ends: 92951 [2022-07-13 17:45:39,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2022-07-13 17:45:39,726 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 1303 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 2100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:45:39,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1317 Valid, 1252 Invalid, 2100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1775 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 17:45:39,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92951 states. [2022-07-13 17:45:43,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92951 to 92809. [2022-07-13 17:45:43,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92809 states, 77453 states have (on average 1.583915406762811) internal successors, (122679), 77458 states have internal predecessors, (122679), 15323 states have call successors, (15323), 26 states have call predecessors, (15323), 32 states have return successors, (17516), 15324 states have call predecessors, (17516), 15321 states have call successors, (17516) [2022-07-13 17:45:44,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92809 states to 92809 states and 155518 transitions. [2022-07-13 17:45:44,035 INFO L78 Accepts]: Start accepts. Automaton has 92809 states and 155518 transitions. Word has length 142 [2022-07-13 17:45:44,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:45:44,035 INFO L495 AbstractCegarLoop]: Abstraction has 92809 states and 155518 transitions. [2022-07-13 17:45:44,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 17:45:44,035 INFO L276 IsEmpty]: Start isEmpty. Operand 92809 states and 155518 transitions. [2022-07-13 17:45:44,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-13 17:45:44,081 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:45:44,081 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:45:44,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 17:45:44,082 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:45:44,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:45:44,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1176085473, now seen corresponding path program 1 times [2022-07-13 17:45:44,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:45:44,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958926667] [2022-07-13 17:45:44,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:45:44,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:45:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:44,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:45:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:44,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:45:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:44,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:45:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:44,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:45:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:44,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:45:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:44,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:45:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:44,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:45:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:44,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 17:45:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:44,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 17:45:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:44,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 17:45:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:44,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 17:45:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:44,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 17:45:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:44,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 17:45:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:44,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-13 17:45:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:44,219 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:45:44,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:45:44,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958926667] [2022-07-13 17:45:44,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958926667] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:45:44,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:45:44,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-13 17:45:44,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684307676] [2022-07-13 17:45:44,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:45:44,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 17:45:44,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:45:44,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 17:45:44,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2022-07-13 17:45:44,222 INFO L87 Difference]: Start difference. First operand 92809 states and 155518 transitions. Second operand has 16 states, 14 states have (on average 7.142857142857143) internal successors, (100), 12 states have internal predecessors, (100), 8 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) [2022-07-13 17:45:49,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:45:49,214 INFO L93 Difference]: Finished difference Result 93273 states and 159445 transitions. [2022-07-13 17:45:49,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 17:45:49,214 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 7.142857142857143) internal successors, (100), 12 states have internal predecessors, (100), 8 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) Word has length 143 [2022-07-13 17:45:49,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:45:49,485 INFO L225 Difference]: With dead ends: 93273 [2022-07-13 17:45:49,485 INFO L226 Difference]: Without dead ends: 93007 [2022-07-13 17:45:49,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=281, Invalid=1125, Unknown=0, NotChecked=0, Total=1406 [2022-07-13 17:45:49,524 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 1075 mSDsluCounter, 1876 mSDsCounter, 0 mSdLazyCounter, 4559 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 4912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 4559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-13 17:45:49,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 2361 Invalid, 4912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 4559 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-13 17:45:49,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93007 states. [2022-07-13 17:45:53,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93007 to 92862. [2022-07-13 17:45:53,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92862 states, 77494 states have (on average 1.5838000361318296) internal successors, (122735), 77501 states have internal predecessors, (122735), 15334 states have call successors, (15334), 27 states have call predecessors, (15334), 33 states have return successors, (17527), 15333 states have call predecessors, (17527), 15332 states have call successors, (17527) [2022-07-13 17:45:53,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92862 states to 92862 states and 155596 transitions. [2022-07-13 17:45:53,505 INFO L78 Accepts]: Start accepts. Automaton has 92862 states and 155596 transitions. Word has length 143 [2022-07-13 17:45:53,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:45:53,506 INFO L495 AbstractCegarLoop]: Abstraction has 92862 states and 155596 transitions. [2022-07-13 17:45:53,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 7.142857142857143) internal successors, (100), 12 states have internal predecessors, (100), 8 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) [2022-07-13 17:45:53,506 INFO L276 IsEmpty]: Start isEmpty. Operand 92862 states and 155596 transitions. [2022-07-13 17:45:53,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-13 17:45:53,886 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:45:53,886 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:45:53,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 17:45:53,886 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:45:53,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:45:53,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1650032327, now seen corresponding path program 1 times [2022-07-13 17:45:53,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:45:53,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291104328] [2022-07-13 17:45:53,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:45:53,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:45:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:53,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:45:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:53,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:45:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:53,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:45:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:53,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:45:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:53,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:45:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:53,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:45:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:53,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:45:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:53,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 17:45:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:53,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 17:45:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:53,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 17:45:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:53,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 17:45:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:53,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 17:45:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:53,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 17:45:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:54,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-13 17:45:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:54,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-13 17:45:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:54,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-13 17:45:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:54,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-13 17:45:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:45:54,003 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-13 17:45:54,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:45:54,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291104328] [2022-07-13 17:45:54,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291104328] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:45:54,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:45:54,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:45:54,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397923165] [2022-07-13 17:45:54,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:45:54,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:45:54,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:45:54,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:45:54,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:45:54,005 INFO L87 Difference]: Start difference. First operand 92862 states and 155596 transitions. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17)