./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec1_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec1_product31.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ca4739abfecd00b8d2b799ccc2617c6e4b4e221f88b8a7e722070835771a8404 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 04:46:00,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 04:46:00,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 04:46:00,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 04:46:00,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 04:46:00,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 04:46:00,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 04:46:00,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 04:46:00,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 04:46:00,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 04:46:00,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 04:46:00,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 04:46:00,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 04:46:00,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 04:46:00,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 04:46:00,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 04:46:00,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 04:46:00,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 04:46:00,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 04:46:00,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 04:46:00,742 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 04:46:00,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 04:46:00,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 04:46:00,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 04:46:00,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 04:46:00,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 04:46:00,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 04:46:00,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 04:46:00,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 04:46:00,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 04:46:00,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 04:46:00,755 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 04:46:00,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 04:46:00,759 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 04:46:00,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 04:46:00,761 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 04:46:00,761 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 04:46:00,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 04:46:00,762 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 04:46:00,762 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 04:46:00,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 04:46:00,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 04:46:00,764 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 04:46:00,789 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 04:46:00,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 04:46:00,790 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 04:46:00,791 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 04:46:00,791 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 04:46:00,792 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 04:46:00,792 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 04:46:00,792 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 04:46:00,792 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 04:46:00,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 04:46:00,793 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 04:46:00,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 04:46:00,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 04:46:00,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 04:46:00,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 04:46:00,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 04:46:00,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 04:46:00,794 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 04:46:00,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 04:46:00,795 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 04:46:00,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 04:46:00,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 04:46:00,795 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 04:46:00,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 04:46:00,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:46:00,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 04:46:00,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 04:46:00,796 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 04:46:00,796 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 04:46:00,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 04:46:00,797 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 04:46:00,797 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 04:46:00,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 04:46:00,797 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca4739abfecd00b8d2b799ccc2617c6e4b4e221f88b8a7e722070835771a8404 [2022-07-21 04:46:01,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 04:46:01,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 04:46:01,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 04:46:01,093 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 04:46:01,093 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 04:46:01,095 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec1_product31.cil.c [2022-07-21 04:46:01,142 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95071936a/bc42441d4e124d8b8f6f6059ce424892/FLAGd30083451 [2022-07-21 04:46:01,663 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 04:46:01,667 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec1_product31.cil.c [2022-07-21 04:46:01,686 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95071936a/bc42441d4e124d8b8f6f6059ce424892/FLAGd30083451 [2022-07-21 04:46:01,994 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95071936a/bc42441d4e124d8b8f6f6059ce424892 [2022-07-21 04:46:01,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 04:46:01,998 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 04:46:01,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 04:46:01,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 04:46:02,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 04:46:02,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:46:01" (1/1) ... [2022-07-21 04:46:02,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2afdc249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:46:02, skipping insertion in model container [2022-07-21 04:46:02,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:46:01" (1/1) ... [2022-07-21 04:46:02,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 04:46:02,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 04:46:02,423 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec1_product31.cil.c[64142,64155] [2022-07-21 04:46:02,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:46:02,441 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 04:46:02,560 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec1_product31.cil.c[64142,64155] [2022-07-21 04:46:02,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:46:02,598 INFO L208 MainTranslator]: Completed translation [2022-07-21 04:46:02,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:46:02 WrapperNode [2022-07-21 04:46:02,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 04:46:02,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 04:46:02,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 04:46:02,600 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 04:46:02,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:46:02" (1/1) ... [2022-07-21 04:46:02,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:46:02" (1/1) ... [2022-07-21 04:46:02,650 INFO L137 Inliner]: procedures = 131, calls = 218, calls flagged for inlining = 61, calls inlined = 56, statements flattened = 1018 [2022-07-21 04:46:02,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 04:46:02,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 04:46:02,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 04:46:02,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 04:46:02,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:46:02" (1/1) ... [2022-07-21 04:46:02,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:46:02" (1/1) ... [2022-07-21 04:46:02,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:46:02" (1/1) ... [2022-07-21 04:46:02,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:46:02" (1/1) ... [2022-07-21 04:46:02,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:46:02" (1/1) ... [2022-07-21 04:46:02,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:46:02" (1/1) ... [2022-07-21 04:46:02,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:46:02" (1/1) ... [2022-07-21 04:46:02,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 04:46:02,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 04:46:02,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 04:46:02,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 04:46:02,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:46:02" (1/1) ... [2022-07-21 04:46:02,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:46:02,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:46:02,753 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) [2022-07-21 04:46:02,778 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 [2022-07-21 04:46:02,791 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-07-21 04:46:02,792 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-07-21 04:46:02,792 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-07-21 04:46:02,792 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-07-21 04:46:02,792 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-07-21 04:46:02,792 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-07-21 04:46:02,792 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-21 04:46:02,794 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-21 04:46:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-21 04:46:02,794 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-21 04:46:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-07-21 04:46:02,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-07-21 04:46:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-21 04:46:02,794 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-21 04:46:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-07-21 04:46:02,795 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-07-21 04:46:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-07-21 04:46:02,795 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-07-21 04:46:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-21 04:46:02,795 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-21 04:46:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-21 04:46:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-07-21 04:46:02,795 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-07-21 04:46:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-21 04:46:02,796 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-21 04:46:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 04:46:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-07-21 04:46:02,796 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-07-21 04:46:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-07-21 04:46:02,796 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-07-21 04:46:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-21 04:46:02,796 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-21 04:46:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-21 04:46:02,797 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-21 04:46:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-21 04:46:02,797 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-21 04:46:02,798 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-07-21 04:46:02,798 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-07-21 04:46:02,798 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-21 04:46:02,798 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-21 04:46:02,798 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-07-21 04:46:02,798 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-07-21 04:46:02,798 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-21 04:46:02,799 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-21 04:46:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-07-21 04:46:02,799 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-07-21 04:46:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 04:46:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-21 04:46:02,799 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-21 04:46:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 04:46:02,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 04:46:02,968 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 04:46:02,970 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 04:46:03,592 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 04:46:03,608 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 04:46:03,608 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 04:46:03,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:46:03 BoogieIcfgContainer [2022-07-21 04:46:03,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 04:46:03,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 04:46:03,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 04:46:03,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 04:46:03,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:46:01" (1/3) ... [2022-07-21 04:46:03,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f2714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:46:03, skipping insertion in model container [2022-07-21 04:46:03,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:46:02" (2/3) ... [2022-07-21 04:46:03,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f2714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:46:03, skipping insertion in model container [2022-07-21 04:46:03,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:46:03" (3/3) ... [2022-07-21 04:46:03,630 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec1_product31.cil.c [2022-07-21 04:46:03,640 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 04:46:03,655 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 04:46:03,742 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 04:46:03,759 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@6650fd59, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@31d3901a [2022-07-21 04:46:03,759 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 04:46:03,767 INFO L276 IsEmpty]: Start isEmpty. Operand has 369 states, 285 states have (on average 1.5017543859649123) internal successors, (428), 289 states have internal predecessors, (428), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-21 04:46:03,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-21 04:46:03,793 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:46:03,794 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:46:03,794 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:46:03,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:46:03,799 INFO L85 PathProgramCache]: Analyzing trace with hash -87878287, now seen corresponding path program 1 times [2022-07-21 04:46:03,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:46:03,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480114736] [2022-07-21 04:46:03,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:46:03,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:46:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:03,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:46:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:04,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:46:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:04,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:46:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:04,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 04:46:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:04,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:46:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:04,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:46:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:04,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 04:46:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:04,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 04:46:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:04,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:46:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:04,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:46:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:04,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:46:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:04,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 04:46:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:04,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 04:46:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:04,070 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-21 04:46:04,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:46:04,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480114736] [2022-07-21 04:46:04,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480114736] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:46:04,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215847899] [2022-07-21 04:46:04,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:46:04,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:46:04,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:46:04,074 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) [2022-07-21 04:46:04,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 04:46:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:04,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 1051 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 04:46:04,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:46:04,403 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 04:46:04,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:46:04,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215847899] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:46:04,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:46:04,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-07-21 04:46:04,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420273228] [2022-07-21 04:46:04,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:46:04,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 04:46:04,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:46:04,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 04:46:04,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:46:04,427 INFO L87 Difference]: Start difference. First operand has 369 states, 285 states have (on average 1.5017543859649123) internal successors, (428), 289 states have internal predecessors, (428), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:46:04,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:46:04,462 INFO L93 Difference]: Finished difference Result 584 states and 846 transitions. [2022-07-21 04:46:04,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 04:46:04,464 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 101 [2022-07-21 04:46:04,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:46:04,474 INFO L225 Difference]: With dead ends: 584 [2022-07-21 04:46:04,474 INFO L226 Difference]: Without dead ends: 362 [2022-07-21 04:46:04,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:46:04,480 INFO L413 NwaCegarLoop]: 542 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, 542 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 [2022-07-21 04:46:04,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:46:04,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-07-21 04:46:04,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2022-07-21 04:46:04,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 279 states have (on average 1.4946236559139785) internal successors, (417), 282 states have internal predecessors, (417), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-07-21 04:46:04,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 534 transitions. [2022-07-21 04:46:04,531 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 534 transitions. Word has length 101 [2022-07-21 04:46:04,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:46:04,533 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 534 transitions. [2022-07-21 04:46:04,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:46:04,534 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 534 transitions. [2022-07-21 04:46:04,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-21 04:46:04,537 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:46:04,537 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:46:04,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 04:46:04,756 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 [2022-07-21 04:46:04,756 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:46:04,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:46:04,757 INFO L85 PathProgramCache]: Analyzing trace with hash -947747183, now seen corresponding path program 1 times [2022-07-21 04:46:04,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:46:04,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753342748] [2022-07-21 04:46:04,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:46:04,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:46:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:04,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:46:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:04,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:46:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:04,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:46:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:04,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 04:46:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:04,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:46:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:04,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:46:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:04,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 04:46:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:04,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:46:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:04,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:46:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:04,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 04:46:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:04,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 04:46:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:04,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 04:46:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:04,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 04:46:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:04,931 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-21 04:46:04,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:46:04,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753342748] [2022-07-21 04:46:04,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753342748] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:46:04,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499072817] [2022-07-21 04:46:04,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:46:04,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:46:04,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:46:04,936 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) [2022-07-21 04:46:04,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 04:46:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:05,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 04:46:05,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:46:05,193 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 04:46:05,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:46:05,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499072817] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:46:05,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:46:05,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-21 04:46:05,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773750720] [2022-07-21 04:46:05,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:46:05,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 04:46:05,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:46:05,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 04:46:05,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:46:05,195 INFO L87 Difference]: Start difference. First operand 362 states and 534 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:46:05,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:46:05,217 INFO L93 Difference]: Finished difference Result 574 states and 827 transitions. [2022-07-21 04:46:05,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 04:46:05,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 102 [2022-07-21 04:46:05,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:46:05,221 INFO L225 Difference]: With dead ends: 574 [2022-07-21 04:46:05,221 INFO L226 Difference]: Without dead ends: 365 [2022-07-21 04:46:05,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:46:05,223 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 1 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1062 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 [2022-07-21 04:46:05,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1062 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:46:05,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-07-21 04:46:05,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 364. [2022-07-21 04:46:05,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 281 states have (on average 1.491103202846975) internal successors, (419), 284 states have internal predecessors, (419), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-07-21 04:46:05,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 536 transitions. [2022-07-21 04:46:05,241 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 536 transitions. Word has length 102 [2022-07-21 04:46:05,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:46:05,242 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 536 transitions. [2022-07-21 04:46:05,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:46:05,242 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 536 transitions. [2022-07-21 04:46:05,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-21 04:46:05,244 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:46:05,244 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] [2022-07-21 04:46:05,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 04:46:05,461 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 [2022-07-21 04:46:05,462 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:46:05,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:46:05,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1216397766, now seen corresponding path program 1 times [2022-07-21 04:46:05,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:46:05,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694958637] [2022-07-21 04:46:05,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:46:05,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:46:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:05,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:46:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:05,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:46:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:05,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:46:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:05,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 04:46:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:05,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:46:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:05,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:46:05,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:05,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 04:46:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:05,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:46:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:05,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 04:46:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:05,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 04:46:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:05,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 04:46:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:05,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 04:46:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:05,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 04:46:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 04:46:05,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:46:05,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694958637] [2022-07-21 04:46:05,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694958637] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:46:05,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020020884] [2022-07-21 04:46:05,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:46:05,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:46:05,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:46:05,632 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) [2022-07-21 04:46:05,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 04:46:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:05,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:46:05,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:46:05,863 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 04:46:05,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:46:05,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020020884] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:46:05,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:46:05,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-21 04:46:05,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232519121] [2022-07-21 04:46:05,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:46:05,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 04:46:05,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:46:05,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 04:46:05,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:46:05,866 INFO L87 Difference]: Start difference. First operand 364 states and 536 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2022-07-21 04:46:05,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:46:05,882 INFO L93 Difference]: Finished difference Result 758 states and 1131 transitions. [2022-07-21 04:46:05,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 04:46:05,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 108 [2022-07-21 04:46:05,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:46:05,885 INFO L225 Difference]: With dead ends: 758 [2022-07-21 04:46:05,885 INFO L226 Difference]: Without dead ends: 421 [2022-07-21 04:46:05,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:46:05,886 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 107 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1040 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 [2022-07-21 04:46:05,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 1040 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:46:05,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-07-21 04:46:05,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 413. [2022-07-21 04:46:05,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 319 states have (on average 1.5078369905956113) internal successors, (481), 322 states have internal predecessors, (481), 70 states have call successors, (70), 23 states have call predecessors, (70), 23 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2022-07-21 04:46:05,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 620 transitions. [2022-07-21 04:46:05,909 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 620 transitions. Word has length 108 [2022-07-21 04:46:05,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:46:05,909 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 620 transitions. [2022-07-21 04:46:05,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2022-07-21 04:46:05,909 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 620 transitions. [2022-07-21 04:46:05,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-21 04:46:05,911 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:46:05,911 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] [2022-07-21 04:46:05,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 04:46:06,139 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 [2022-07-21 04:46:06,139 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:46:06,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:46:06,140 INFO L85 PathProgramCache]: Analyzing trace with hash 659404408, now seen corresponding path program 1 times [2022-07-21 04:46:06,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:46:06,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070915560] [2022-07-21 04:46:06,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:46:06,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:46:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:46:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:46:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:46:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 04:46:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:46:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:46:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 04:46:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 04:46:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:46:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 04:46:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 04:46:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 04:46:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 04:46:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,249 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 04:46:06,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:46:06,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070915560] [2022-07-21 04:46:06,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070915560] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:46:06,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215448196] [2022-07-21 04:46:06,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:46:06,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:46:06,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:46:06,268 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) [2022-07-21 04:46:06,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 04:46:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 1073 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 04:46:06,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:46:06,528 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-21 04:46:06,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:46:06,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215448196] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:46:06,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:46:06,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-07-21 04:46:06,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602861759] [2022-07-21 04:46:06,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:46:06,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:46:06,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:46:06,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:46:06,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:46:06,530 INFO L87 Difference]: Start difference. First operand 413 states and 620 transitions. Second operand has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 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) [2022-07-21 04:46:06,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:46:06,571 INFO L93 Difference]: Finished difference Result 817 states and 1230 transitions. [2022-07-21 04:46:06,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:46:06,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 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 109 [2022-07-21 04:46:06,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:46:06,574 INFO L225 Difference]: With dead ends: 817 [2022-07-21 04:46:06,574 INFO L226 Difference]: Without dead ends: 415 [2022-07-21 04:46:06,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:46:06,576 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 125 mSDsluCounter, 1430 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1955 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 [2022-07-21 04:46:06,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1955 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:46:06,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-07-21 04:46:06,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2022-07-21 04:46:06,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 320 states have (on average 1.50625) internal successors, (482), 324 states have internal predecessors, (482), 70 states have call successors, (70), 23 states have call predecessors, (70), 24 states have return successors, (71), 69 states have call predecessors, (71), 69 states have call successors, (71) [2022-07-21 04:46:06,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 623 transitions. [2022-07-21 04:46:06,592 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 623 transitions. Word has length 109 [2022-07-21 04:46:06,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:46:06,592 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 623 transitions. [2022-07-21 04:46:06,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 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) [2022-07-21 04:46:06,593 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 623 transitions. [2022-07-21 04:46:06,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-21 04:46:06,594 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:46:06,594 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] [2022-07-21 04:46:06,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 04:46:06,794 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 [2022-07-21 04:46:06,795 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:46:06,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:46:06,796 INFO L85 PathProgramCache]: Analyzing trace with hash -2124888186, now seen corresponding path program 1 times [2022-07-21 04:46:06,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:46:06,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624911287] [2022-07-21 04:46:06,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:46:06,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:46:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:46:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:46:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:46:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:46:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 04:46:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:46:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 04:46:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:46:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 04:46:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:46:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 04:46:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 04:46:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 04:46:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:06,928 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 04:46:06,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:46:06,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624911287] [2022-07-21 04:46:06,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624911287] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:46:06,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466164047] [2022-07-21 04:46:06,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:46:06,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:46:06,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:46:06,944 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) [2022-07-21 04:46:07,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 04:46:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:07,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 04:46:07,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:46:07,227 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-21 04:46:07,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:46:07,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466164047] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:46:07,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:46:07,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-21 04:46:07,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585936701] [2022-07-21 04:46:07,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:46:07,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:46:07,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:46:07,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:46:07,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:46:07,229 INFO L87 Difference]: Start difference. First operand 415 states and 623 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2022-07-21 04:46:07,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:46:07,276 INFO L93 Difference]: Finished difference Result 819 states and 1235 transitions. [2022-07-21 04:46:07,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:46:07,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 110 [2022-07-21 04:46:07,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:46:07,279 INFO L225 Difference]: With dead ends: 819 [2022-07-21 04:46:07,279 INFO L226 Difference]: Without dead ends: 417 [2022-07-21 04:46:07,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:46:07,281 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 124 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1944 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 [2022-07-21 04:46:07,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1944 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:46:07,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-07-21 04:46:07,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2022-07-21 04:46:07,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 321 states have (on average 1.5046728971962617) internal successors, (483), 326 states have internal predecessors, (483), 70 states have call successors, (70), 23 states have call predecessors, (70), 25 states have return successors, (76), 69 states have call predecessors, (76), 69 states have call successors, (76) [2022-07-21 04:46:07,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 629 transitions. [2022-07-21 04:46:07,295 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 629 transitions. Word has length 110 [2022-07-21 04:46:07,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:46:07,296 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 629 transitions. [2022-07-21 04:46:07,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2022-07-21 04:46:07,296 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 629 transitions. [2022-07-21 04:46:07,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-21 04:46:07,298 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:46:07,298 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] [2022-07-21 04:46:07,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 04:46:07,532 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 [2022-07-21 04:46:07,532 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:46:07,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:46:07,533 INFO L85 PathProgramCache]: Analyzing trace with hash 302573545, now seen corresponding path program 1 times [2022-07-21 04:46:07,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:46:07,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040006821] [2022-07-21 04:46:07,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:46:07,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:46:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:07,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:46:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:07,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:46:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:07,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:46:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:07,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:46:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:07,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:46:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:07,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 04:46:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:07,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 04:46:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:07,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:46:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:07,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 04:46:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:07,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 04:46:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:07,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:46:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:07,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 04:46:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:07,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 04:46:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:07,616 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 04:46:07,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:46:07,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040006821] [2022-07-21 04:46:07,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040006821] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:46:07,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:46:07,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:46:07,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952189435] [2022-07-21 04:46:07,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:46:07,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:46:07,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:46:07,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:46:07,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:46:07,618 INFO L87 Difference]: Start difference. First operand 417 states and 629 transitions. Second operand has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:46:08,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:46:08,924 INFO L93 Difference]: Finished difference Result 996 states and 1501 transitions. [2022-07-21 04:46:08,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 04:46:08,924 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 111 [2022-07-21 04:46:08,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:46:08,927 INFO L225 Difference]: With dead ends: 996 [2022-07-21 04:46:08,928 INFO L226 Difference]: Without dead ends: 602 [2022-07-21 04:46:08,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 04:46:08,929 INFO L413 NwaCegarLoop]: 673 mSDtfsCounter, 1293 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2392 mSolverCounterSat, 522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1310 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 522 IncrementalHoareTripleChecker+Valid, 2392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:46:08,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1310 Valid, 1487 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [522 Valid, 2392 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 04:46:08,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2022-07-21 04:46:08,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 417. [2022-07-21 04:46:08,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 321 states have (on average 1.5046728971962617) internal successors, (483), 326 states have internal predecessors, (483), 70 states have call successors, (70), 23 states have call predecessors, (70), 25 states have return successors, (75), 69 states have call predecessors, (75), 69 states have call successors, (75) [2022-07-21 04:46:08,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 628 transitions. [2022-07-21 04:46:08,996 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 628 transitions. Word has length 111 [2022-07-21 04:46:08,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:46:08,997 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 628 transitions. [2022-07-21 04:46:08,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:46:08,997 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 628 transitions. [2022-07-21 04:46:08,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 04:46:08,999 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:46:08,999 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] [2022-07-21 04:46:08,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 04:46:09,000 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:46:09,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:46:09,000 INFO L85 PathProgramCache]: Analyzing trace with hash -573693163, now seen corresponding path program 2 times [2022-07-21 04:46:09,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:46:09,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096855132] [2022-07-21 04:46:09,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:46:09,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:46:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:09,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:46:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:09,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:46:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:09,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:46:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:09,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:46:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:09,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:46:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:09,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:46:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:09,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 04:46:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:09,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 04:46:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:09,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:46:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:09,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 04:46:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:09,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 04:46:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:09,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 04:46:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:09,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 04:46:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:09,101 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 04:46:09,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:46:09,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096855132] [2022-07-21 04:46:09,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096855132] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:46:09,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:46:09,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:46:09,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274142621] [2022-07-21 04:46:09,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:46:09,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:46:09,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:46:09,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:46:09,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:46:09,103 INFO L87 Difference]: Start difference. First operand 417 states and 628 transitions. Second operand has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:46:10,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:46:10,537 INFO L93 Difference]: Finished difference Result 998 states and 1504 transitions. [2022-07-21 04:46:10,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 04:46:10,537 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2022-07-21 04:46:10,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:46:10,542 INFO L225 Difference]: With dead ends: 998 [2022-07-21 04:46:10,542 INFO L226 Difference]: Without dead ends: 604 [2022-07-21 04:46:10,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 04:46:10,562 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 1288 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2388 mSolverCounterSat, 530 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 530 IncrementalHoareTripleChecker+Valid, 2388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:46:10,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1305 Valid, 1488 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [530 Valid, 2388 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 04:46:10,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-07-21 04:46:10,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 419. [2022-07-21 04:46:10,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 322 states have (on average 1.5031055900621118) internal successors, (484), 328 states have internal predecessors, (484), 70 states have call successors, (70), 23 states have call predecessors, (70), 26 states have return successors, (77), 69 states have call predecessors, (77), 69 states have call successors, (77) [2022-07-21 04:46:10,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 631 transitions. [2022-07-21 04:46:10,602 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 631 transitions. Word has length 112 [2022-07-21 04:46:10,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:46:10,602 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 631 transitions. [2022-07-21 04:46:10,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:46:10,603 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 631 transitions. [2022-07-21 04:46:10,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-21 04:46:10,604 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:46:10,604 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] [2022-07-21 04:46:10,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 04:46:10,604 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:46:10,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:46:10,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1900493330, now seen corresponding path program 1 times [2022-07-21 04:46:10,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:46:10,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329188278] [2022-07-21 04:46:10,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:46:10,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:46:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:10,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:46:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:10,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:46:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:10,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:46:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:10,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:46:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:10,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:46:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:10,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:46:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:10,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:46:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:10,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 04:46:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:10,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:46:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:10,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 04:46:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:10,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 04:46:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:10,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 04:46:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:10,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 04:46:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:10,787 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 04:46:10,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:46:10,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329188278] [2022-07-21 04:46:10,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329188278] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:46:10,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:46:10,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 04:46:10,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703394265] [2022-07-21 04:46:10,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:46:10,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 04:46:10,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:46:10,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 04:46:10,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:46:10,789 INFO L87 Difference]: Start difference. First operand 419 states and 631 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 04:46:12,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:46:12,421 INFO L93 Difference]: Finished difference Result 996 states and 1499 transitions. [2022-07-21 04:46:12,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 04:46:12,422 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 113 [2022-07-21 04:46:12,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:46:12,424 INFO L225 Difference]: With dead ends: 996 [2022-07-21 04:46:12,424 INFO L226 Difference]: Without dead ends: 604 [2022-07-21 04:46:12,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-21 04:46:12,426 INFO L413 NwaCegarLoop]: 660 mSDtfsCounter, 1400 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 4309 mSolverCounterSat, 580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1400 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 4889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 580 IncrementalHoareTripleChecker+Valid, 4309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:46:12,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1400 Valid, 1784 Invalid, 4889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [580 Valid, 4309 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 04:46:12,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-07-21 04:46:12,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 419. [2022-07-21 04:46:12,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 322 states have (on average 1.5031055900621118) internal successors, (484), 328 states have internal predecessors, (484), 70 states have call successors, (70), 23 states have call predecessors, (70), 26 states have return successors, (76), 69 states have call predecessors, (76), 69 states have call successors, (76) [2022-07-21 04:46:12,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 630 transitions. [2022-07-21 04:46:12,479 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 630 transitions. Word has length 113 [2022-07-21 04:46:12,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:46:12,479 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 630 transitions. [2022-07-21 04:46:12,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 04:46:12,480 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 630 transitions. [2022-07-21 04:46:12,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-21 04:46:12,481 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:46:12,481 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] [2022-07-21 04:46:12,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 04:46:12,481 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:46:12,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:46:12,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1140315037, now seen corresponding path program 2 times [2022-07-21 04:46:12,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:46:12,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259812341] [2022-07-21 04:46:12,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:46:12,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:46:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:12,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:46:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:12,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:46:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:12,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:46:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:12,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:46:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:12,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:46:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:12,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:46:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:12,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 04:46:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:12,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:46:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:12,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 04:46:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:12,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 04:46:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:12,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 04:46:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:12,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 04:46:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:12,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 04:46:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:12,633 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 04:46:12,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:46:12,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259812341] [2022-07-21 04:46:12,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259812341] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:46:12,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:46:12,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 04:46:12,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193877778] [2022-07-21 04:46:12,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:46:12,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 04:46:12,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:46:12,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 04:46:12,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:46:12,635 INFO L87 Difference]: Start difference. First operand 419 states and 630 transitions. Second operand has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 04:46:14,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:46:14,084 INFO L93 Difference]: Finished difference Result 998 states and 1505 transitions. [2022-07-21 04:46:14,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 04:46:14,084 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 114 [2022-07-21 04:46:14,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:46:14,087 INFO L225 Difference]: With dead ends: 998 [2022-07-21 04:46:14,087 INFO L226 Difference]: Without dead ends: 606 [2022-07-21 04:46:14,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-21 04:46:14,089 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 1395 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 4357 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1395 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 4926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 4357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:46:14,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1395 Valid, 1785 Invalid, 4926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [569 Valid, 4357 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 04:46:14,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2022-07-21 04:46:14,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 421. [2022-07-21 04:46:14,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 323 states have (on average 1.501547987616099) internal successors, (485), 330 states have internal predecessors, (485), 70 states have call successors, (70), 23 states have call predecessors, (70), 27 states have return successors, (81), 69 states have call predecessors, (81), 69 states have call successors, (81) [2022-07-21 04:46:14,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 636 transitions. [2022-07-21 04:46:14,111 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 636 transitions. Word has length 114 [2022-07-21 04:46:14,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:46:14,112 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 636 transitions. [2022-07-21 04:46:14,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 04:46:14,113 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 636 transitions. [2022-07-21 04:46:14,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 04:46:14,114 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:46:14,114 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] [2022-07-21 04:46:14,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 04:46:14,115 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:46:14,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:46:14,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1502282733, now seen corresponding path program 1 times [2022-07-21 04:46:14,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:46:14,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142781227] [2022-07-21 04:46:14,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:46:14,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:46:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:14,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:46:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:14,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:46:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:14,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:46:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:14,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:46:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:14,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:46:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:14,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:46:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:14,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:46:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:14,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 04:46:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:14,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:46:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:14,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 04:46:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:14,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 04:46:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:14,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 04:46:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:14,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 04:46:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:14,199 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:46:14,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:46:14,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142781227] [2022-07-21 04:46:14,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142781227] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:46:14,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141314650] [2022-07-21 04:46:14,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:46:14,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:46:14,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:46:14,201 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) [2022-07-21 04:46:14,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 04:46:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:14,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:46:14,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:46:14,420 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:46:14,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 04:46:14,472 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:46:14,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141314650] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 04:46:14,472 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 04:46:14,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2022-07-21 04:46:14,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094650816] [2022-07-21 04:46:14,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 04:46:14,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 04:46:14,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:46:14,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 04:46:14,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-21 04:46:14,475 INFO L87 Difference]: Start difference. First operand 421 states and 636 transitions. Second operand has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 7 states have internal predecessors, (111), 2 states have call successors, (31), 6 states have call predecessors, (31), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 04:46:15,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:46:15,762 INFO L93 Difference]: Finished difference Result 1167 states and 1833 transitions. [2022-07-21 04:46:15,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:46:15,762 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 7 states have internal predecessors, (111), 2 states have call successors, (31), 6 states have call predecessors, (31), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 115 [2022-07-21 04:46:15,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:46:15,767 INFO L225 Difference]: With dead ends: 1167 [2022-07-21 04:46:15,767 INFO L226 Difference]: Without dead ends: 958 [2022-07-21 04:46:15,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-07-21 04:46:15,769 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 1597 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 2801 mSolverCounterSat, 671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 3472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 671 IncrementalHoareTripleChecker+Valid, 2801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:46:15,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1642 Valid, 1929 Invalid, 3472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [671 Valid, 2801 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 04:46:15,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2022-07-21 04:46:15,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 749. [2022-07-21 04:46:15,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 587 states have (on average 1.5724020442930153) internal successors, (923), 594 states have internal predecessors, (923), 134 states have call successors, (134), 23 states have call predecessors, (134), 27 states have return successors, (155), 133 states have call predecessors, (155), 133 states have call successors, (155) [2022-07-21 04:46:15,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1212 transitions. [2022-07-21 04:46:15,804 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1212 transitions. Word has length 115 [2022-07-21 04:46:15,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:46:15,805 INFO L495 AbstractCegarLoop]: Abstraction has 749 states and 1212 transitions. [2022-07-21 04:46:15,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 7 states have internal predecessors, (111), 2 states have call successors, (31), 6 states have call predecessors, (31), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 04:46:15,805 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1212 transitions. [2022-07-21 04:46:15,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-21 04:46:15,808 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:46:15,808 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:46:15,826 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-21 04:46:16,023 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 [2022-07-21 04:46:16,023 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:46:16,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:46:16,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1211504496, now seen corresponding path program 1 times [2022-07-21 04:46:16,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:46:16,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367982444] [2022-07-21 04:46:16,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:46:16,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:46:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:16,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:46:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:16,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:46:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:16,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:46:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:16,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:46:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:16,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:46:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:16,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:46:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:16,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 04:46:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:16,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:46:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:16,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 04:46:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:16,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 04:46:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:16,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 04:46:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:16,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 04:46:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:16,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 04:46:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:16,115 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:46:16,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:46:16,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367982444] [2022-07-21 04:46:16,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367982444] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:46:16,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:46:16,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:46:16,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736422483] [2022-07-21 04:46:16,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:46:16,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:46:16,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:46:16,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:46:16,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:46:16,118 INFO L87 Difference]: Start difference. First operand 749 states and 1212 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:46:17,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:46:17,311 INFO L93 Difference]: Finished difference Result 1948 states and 3204 transitions. [2022-07-21 04:46:17,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:46:17,313 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2022-07-21 04:46:17,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:46:17,319 INFO L225 Difference]: With dead ends: 1948 [2022-07-21 04:46:17,319 INFO L226 Difference]: Without dead ends: 1267 [2022-07-21 04:46:17,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:46:17,322 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 1284 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 562 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 1787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 562 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:46:17,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 1395 Invalid, 1787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [562 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 04:46:17,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-07-21 04:46:17,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1074. [2022-07-21 04:46:17,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 848 states have (on average 1.5896226415094339) internal successors, (1348), 855 states have internal predecessors, (1348), 198 states have call successors, (198), 23 states have call predecessors, (198), 27 states have return successors, (229), 197 states have call predecessors, (229), 197 states have call successors, (229) [2022-07-21 04:46:17,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1775 transitions. [2022-07-21 04:46:17,426 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1775 transitions. Word has length 121 [2022-07-21 04:46:17,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:46:17,426 INFO L495 AbstractCegarLoop]: Abstraction has 1074 states and 1775 transitions. [2022-07-21 04:46:17,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:46:17,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1775 transitions. [2022-07-21 04:46:17,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-21 04:46:17,430 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:46:17,446 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:46:17,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 04:46:17,446 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:46:17,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:46:17,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1600568447, now seen corresponding path program 1 times [2022-07-21 04:46:17,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:46:17,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589493739] [2022-07-21 04:46:17,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:46:17,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:46:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:17,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:46:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:17,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:46:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:17,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:46:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:17,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:46:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:17,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:46:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:17,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:46:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:17,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 04:46:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:17,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:46:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:17,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 04:46:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:17,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 04:46:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:17,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 04:46:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:17,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 04:46:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:17,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 04:46:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:17,515 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:46:17,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:46:17,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589493739] [2022-07-21 04:46:17,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589493739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:46:17,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:46:17,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:46:17,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481286382] [2022-07-21 04:46:17,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:46:17,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:46:17,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:46:17,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:46:17,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:46:17,517 INFO L87 Difference]: Start difference. First operand 1074 states and 1775 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:46:18,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:46:18,775 INFO L93 Difference]: Finished difference Result 2728 states and 4553 transitions. [2022-07-21 04:46:18,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:46:18,776 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2022-07-21 04:46:18,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:46:18,784 INFO L225 Difference]: With dead ends: 2728 [2022-07-21 04:46:18,784 INFO L226 Difference]: Without dead ends: 1775 [2022-07-21 04:46:18,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:46:18,787 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 1282 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 570 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1297 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 1775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 570 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:46:18,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1297 Valid, 1339 Invalid, 1775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [570 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 04:46:18,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2022-07-21 04:46:18,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1582. [2022-07-21 04:46:18,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1261 states have (on average 1.6011102299762094) internal successors, (2019), 1268 states have internal predecessors, (2019), 293 states have call successors, (293), 23 states have call predecessors, (293), 27 states have return successors, (324), 292 states have call predecessors, (324), 292 states have call successors, (324) [2022-07-21 04:46:18,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2636 transitions. [2022-07-21 04:46:18,855 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2636 transitions. Word has length 122 [2022-07-21 04:46:18,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:46:18,856 INFO L495 AbstractCegarLoop]: Abstraction has 1582 states and 2636 transitions. [2022-07-21 04:46:18,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:46:18,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2636 transitions. [2022-07-21 04:46:18,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 04:46:18,861 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:46:18,862 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:46:18,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 04:46:18,862 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:46:18,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:46:18,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1385173842, now seen corresponding path program 1 times [2022-07-21 04:46:18,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:46:18,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105857635] [2022-07-21 04:46:18,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:46:18,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:46:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:18,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:46:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:18,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:46:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:18,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:46:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:18,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:46:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:18,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:46:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:18,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:46:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:18,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:46:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:18,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 04:46:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:18,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 04:46:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:18,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:46:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:18,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 04:46:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:18,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 04:46:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:18,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 04:46:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:18,934 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:46:18,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:46:18,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105857635] [2022-07-21 04:46:18,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105857635] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:46:18,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:46:18,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:46:18,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902951097] [2022-07-21 04:46:18,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:46:18,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:46:18,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:46:18,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:46:18,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:46:18,936 INFO L87 Difference]: Start difference. First operand 1582 states and 2636 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:46:20,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:46:20,315 INFO L93 Difference]: Finished difference Result 3880 states and 6562 transitions. [2022-07-21 04:46:20,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:46:20,316 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2022-07-21 04:46:20,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:46:20,332 INFO L225 Difference]: With dead ends: 3880 [2022-07-21 04:46:20,332 INFO L226 Difference]: Without dead ends: 2544 [2022-07-21 04:46:20,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:46:20,342 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 1280 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 570 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 1772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 570 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:46:20,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1295 Valid, 1334 Invalid, 1772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [570 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 04:46:20,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2022-07-21 04:46:20,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 2351. [2022-07-21 04:46:20,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2351 states, 1907 states have (on average 1.609858416360776) internal successors, (3070), 1914 states have internal predecessors, (3070), 416 states have call successors, (416), 23 states have call predecessors, (416), 27 states have return successors, (463), 415 states have call predecessors, (463), 415 states have call successors, (463) [2022-07-21 04:46:20,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2351 states to 2351 states and 3949 transitions. [2022-07-21 04:46:20,486 INFO L78 Accepts]: Start accepts. Automaton has 2351 states and 3949 transitions. Word has length 123 [2022-07-21 04:46:20,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:46:20,486 INFO L495 AbstractCegarLoop]: Abstraction has 2351 states and 3949 transitions. [2022-07-21 04:46:20,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:46:20,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2351 states and 3949 transitions. [2022-07-21 04:46:20,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 04:46:20,496 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:46:20,496 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:46:20,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 04:46:20,497 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:46:20,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:46:20,497 INFO L85 PathProgramCache]: Analyzing trace with hash 871381248, now seen corresponding path program 1 times [2022-07-21 04:46:20,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:46:20,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251446805] [2022-07-21 04:46:20,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:46:20,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:46:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:20,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:46:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:20,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:46:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:20,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:46:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:20,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:46:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:20,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:46:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:20,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:46:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:20,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 04:46:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:20,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:46:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:20,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 04:46:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:20,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 04:46:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:20,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 04:46:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:20,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 04:46:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:20,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-21 04:46:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:20,581 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:46:20,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:46:20,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251446805] [2022-07-21 04:46:20,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251446805] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:46:20,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:46:20,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:46:20,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18512305] [2022-07-21 04:46:20,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:46:20,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:46:20,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:46:20,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:46:20,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:46:20,583 INFO L87 Difference]: Start difference. First operand 2351 states and 3949 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:46:22,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:46:22,013 INFO L93 Difference]: Finished difference Result 5674 states and 9696 transitions. [2022-07-21 04:46:22,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:46:22,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2022-07-21 04:46:22,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:46:22,031 INFO L225 Difference]: With dead ends: 5674 [2022-07-21 04:46:22,031 INFO L226 Difference]: Without dead ends: 3773 [2022-07-21 04:46:22,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:46:22,038 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 1278 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 570 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 1772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 570 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:46:22,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1293 Valid, 1334 Invalid, 1772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [570 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 04:46:22,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3773 states. [2022-07-21 04:46:22,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3773 to 3580. [2022-07-21 04:46:22,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3580 states, 2957 states have (on average 1.6154886709502874) internal successors, (4777), 2964 states have internal predecessors, (4777), 595 states have call successors, (595), 23 states have call predecessors, (595), 27 states have return successors, (668), 594 states have call predecessors, (668), 594 states have call successors, (668) [2022-07-21 04:46:22,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 6040 transitions. [2022-07-21 04:46:22,197 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 6040 transitions. Word has length 124 [2022-07-21 04:46:22,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:46:22,198 INFO L495 AbstractCegarLoop]: Abstraction has 3580 states and 6040 transitions. [2022-07-21 04:46:22,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:46:22,198 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 6040 transitions. [2022-07-21 04:46:22,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-21 04:46:22,206 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:46:22,206 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] [2022-07-21 04:46:22,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 04:46:22,207 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:46:22,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:46:22,207 INFO L85 PathProgramCache]: Analyzing trace with hash -230197458, now seen corresponding path program 1 times [2022-07-21 04:46:22,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:46:22,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788380398] [2022-07-21 04:46:22,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:46:22,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:46:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:22,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:46:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:22,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:46:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:22,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:46:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:22,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:46:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:22,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:46:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:22,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:46:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:22,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 04:46:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:22,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 04:46:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:22,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:46:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:22,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 04:46:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:22,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 04:46:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:22,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 04:46:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:22,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 04:46:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:22,273 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:46:22,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:46:22,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788380398] [2022-07-21 04:46:22,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788380398] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:46:22,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:46:22,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:46:22,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646254509] [2022-07-21 04:46:22,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:46:22,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:46:22,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:46:22,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:46:22,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:46:22,275 INFO L87 Difference]: Start difference. First operand 3580 states and 6040 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:46:23,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:46:23,471 INFO L93 Difference]: Finished difference Result 8622 states and 14843 transitions. [2022-07-21 04:46:23,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:46:23,471 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2022-07-21 04:46:23,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:46:23,499 INFO L225 Difference]: With dead ends: 8622 [2022-07-21 04:46:23,499 INFO L226 Difference]: Without dead ends: 5804 [2022-07-21 04:46:23,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:46:23,508 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 1276 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 580 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:46:23,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1291 Valid, 1351 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [580 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 04:46:23,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5804 states. [2022-07-21 04:46:23,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5804 to 5611. [2022-07-21 04:46:23,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5611 states, 4612 states have (on average 1.6107979184735473) internal successors, (7429), 4619 states have internal predecessors, (7429), 971 states have call successors, (971), 23 states have call predecessors, (971), 27 states have return successors, (1088), 970 states have call predecessors, (1088), 970 states have call successors, (1088) [2022-07-21 04:46:23,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5611 states to 5611 states and 9488 transitions. [2022-07-21 04:46:23,778 INFO L78 Accepts]: Start accepts. Automaton has 5611 states and 9488 transitions. Word has length 125 [2022-07-21 04:46:23,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:46:23,778 INFO L495 AbstractCegarLoop]: Abstraction has 5611 states and 9488 transitions. [2022-07-21 04:46:23,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:46:23,779 INFO L276 IsEmpty]: Start isEmpty. Operand 5611 states and 9488 transitions. [2022-07-21 04:46:23,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-21 04:46:23,792 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:46:23,792 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] [2022-07-21 04:46:23,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 04:46:23,793 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:46:23,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:46:23,793 INFO L85 PathProgramCache]: Analyzing trace with hash -649519836, now seen corresponding path program 1 times [2022-07-21 04:46:23,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:46:23,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987004732] [2022-07-21 04:46:23,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:46:23,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:46:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:23,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:46:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:23,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:46:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:23,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:46:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:23,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:46:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:23,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:46:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:23,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:46:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:23,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:46:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:23,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 04:46:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:23,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 04:46:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:23,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 04:46:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:23,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 04:46:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:23,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 04:46:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:23,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-21 04:46:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:23,861 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:46:23,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:46:23,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987004732] [2022-07-21 04:46:23,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987004732] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:46:23,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:46:23,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:46:23,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22735871] [2022-07-21 04:46:23,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:46:23,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:46:23,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:46:23,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:46:23,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:46:23,863 INFO L87 Difference]: Start difference. First operand 5611 states and 9488 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:46:25,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:46:25,145 INFO L93 Difference]: Finished difference Result 13959 states and 24064 transitions. [2022-07-21 04:46:25,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:46:25,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2022-07-21 04:46:25,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:46:25,222 INFO L225 Difference]: With dead ends: 13959 [2022-07-21 04:46:25,224 INFO L226 Difference]: Without dead ends: 9487 [2022-07-21 04:46:25,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:46:25,256 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 1274 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1289 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 1776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:46:25,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1289 Valid, 1372 Invalid, 1776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [574 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 04:46:25,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9487 states. [2022-07-21 04:46:25,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9487 to 9294. [2022-07-21 04:46:25,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9294 states, 7689 states have (on average 1.609442060085837) internal successors, (12375), 7696 states have internal predecessors, (12375), 1577 states have call successors, (1577), 23 states have call predecessors, (1577), 27 states have return successors, (1772), 1576 states have call predecessors, (1772), 1576 states have call successors, (1772) [2022-07-21 04:46:25,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9294 states to 9294 states and 15724 transitions. [2022-07-21 04:46:25,649 INFO L78 Accepts]: Start accepts. Automaton has 9294 states and 15724 transitions. Word has length 126 [2022-07-21 04:46:25,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:46:25,649 INFO L495 AbstractCegarLoop]: Abstraction has 9294 states and 15724 transitions. [2022-07-21 04:46:25,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:46:25,650 INFO L276 IsEmpty]: Start isEmpty. Operand 9294 states and 15724 transitions. [2022-07-21 04:46:25,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-21 04:46:25,668 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:46:25,668 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] [2022-07-21 04:46:25,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 04:46:25,668 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:46:25,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:46:25,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1857425092, now seen corresponding path program 1 times [2022-07-21 04:46:25,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:46:25,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326934362] [2022-07-21 04:46:25,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:46:25,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:46:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:25,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:46:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:25,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:46:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:25,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:46:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:25,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:46:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:25,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:46:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:25,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:46:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:25,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:46:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:25,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:46:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:25,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 04:46:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:25,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 04:46:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:25,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 04:46:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:25,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-21 04:46:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:25,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 04:46:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:25,802 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:46:25,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:46:25,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326934362] [2022-07-21 04:46:25,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326934362] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:46:25,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:46:25,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:46:25,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435473536] [2022-07-21 04:46:25,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:46:25,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:46:25,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:46:25,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:46:25,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:46:25,805 INFO L87 Difference]: Start difference. First operand 9294 states and 15724 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:46:27,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:46:27,417 INFO L93 Difference]: Finished difference Result 24143 states and 41610 transitions. [2022-07-21 04:46:27,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:46:27,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2022-07-21 04:46:27,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:46:27,518 INFO L225 Difference]: With dead ends: 24143 [2022-07-21 04:46:27,519 INFO L226 Difference]: Without dead ends: 16440 [2022-07-21 04:46:27,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:46:27,540 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 1272 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 568 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1287 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 1788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:46:27,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1287 Valid, 1390 Invalid, 1788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [568 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 04:46:27,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16440 states. [2022-07-21 04:46:28,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16440 to 16247. [2022-07-21 04:46:28,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16247 states, 13439 states have (on average 1.6010863903564254) internal successors, (21517), 13446 states have internal predecessors, (21517), 2780 states have call successors, (2780), 23 states have call predecessors, (2780), 27 states have return successors, (3119), 2779 states have call predecessors, (3119), 2779 states have call successors, (3119) [2022-07-21 04:46:28,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16247 states to 16247 states and 27416 transitions. [2022-07-21 04:46:28,252 INFO L78 Accepts]: Start accepts. Automaton has 16247 states and 27416 transitions. Word has length 127 [2022-07-21 04:46:28,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:46:28,253 INFO L495 AbstractCegarLoop]: Abstraction has 16247 states and 27416 transitions. [2022-07-21 04:46:28,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:46:28,253 INFO L276 IsEmpty]: Start isEmpty. Operand 16247 states and 27416 transitions. [2022-07-21 04:46:28,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-21 04:46:28,282 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:46:28,282 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] [2022-07-21 04:46:28,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 04:46:28,283 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:46:28,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:46:28,283 INFO L85 PathProgramCache]: Analyzing trace with hash 786594501, now seen corresponding path program 1 times [2022-07-21 04:46:28,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:46:28,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456843625] [2022-07-21 04:46:28,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:46:28,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:46:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:28,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:46:28,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:28,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:46:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:28,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:46:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:28,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:46:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:28,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:46:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:28,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:46:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:28,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 04:46:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:28,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 04:46:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:28,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 04:46:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:28,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 04:46:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:28,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 04:46:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:28,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 04:46:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:28,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 04:46:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:28,484 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:46:28,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:46:28,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456843625] [2022-07-21 04:46:28,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456843625] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:46:28,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:46:28,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:46:28,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516023750] [2022-07-21 04:46:28,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:46:28,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:46:28,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:46:28,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:46:28,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:46:28,485 INFO L87 Difference]: Start difference. First operand 16247 states and 27416 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:46:30,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:46:30,610 INFO L93 Difference]: Finished difference Result 43109 states and 74209 transitions. [2022-07-21 04:46:30,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:46:30,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2022-07-21 04:46:30,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:46:30,726 INFO L225 Difference]: With dead ends: 43109 [2022-07-21 04:46:30,726 INFO L226 Difference]: Without dead ends: 29095 [2022-07-21 04:46:30,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:46:30,758 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 1270 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 575 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 1780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 575 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:46:30,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1285 Valid, 1335 Invalid, 1780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [575 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 04:46:30,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29095 states. [2022-07-21 04:46:31,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29095 to 28902. [2022-07-21 04:46:31,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28902 states, 24055 states have (on average 1.5972147162752026) internal successors, (38421), 24062 states have internal predecessors, (38421), 4819 states have call successors, (4819), 23 states have call predecessors, (4819), 27 states have return successors, (5432), 4818 states have call predecessors, (5432), 4818 states have call successors, (5432) [2022-07-21 04:46:32,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28902 states to 28902 states and 48672 transitions. [2022-07-21 04:46:32,061 INFO L78 Accepts]: Start accepts. Automaton has 28902 states and 48672 transitions. Word has length 128 [2022-07-21 04:46:32,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:46:32,062 INFO L495 AbstractCegarLoop]: Abstraction has 28902 states and 48672 transitions. [2022-07-21 04:46:32,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:46:32,062 INFO L276 IsEmpty]: Start isEmpty. Operand 28902 states and 48672 transitions. [2022-07-21 04:46:32,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-21 04:46:32,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:46:32,086 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] [2022-07-21 04:46:32,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 04:46:32,086 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:46:32,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:46:32,087 INFO L85 PathProgramCache]: Analyzing trace with hash -310730562, now seen corresponding path program 1 times [2022-07-21 04:46:32,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:46:32,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543262442] [2022-07-21 04:46:32,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:46:32,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:46:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:32,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:46:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:32,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:46:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:32,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:46:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:32,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:46:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:32,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:46:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:32,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:46:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:32,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:46:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:32,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 04:46:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:32,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 04:46:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:32,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 04:46:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:32,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 04:46:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:32,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 04:46:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:32,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 04:46:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:32,160 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:46:32,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:46:32,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543262442] [2022-07-21 04:46:32,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543262442] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:46:32,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:46:32,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:46:32,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638390400] [2022-07-21 04:46:32,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:46:32,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:46:32,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:46:32,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:46:32,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:46:32,163 INFO L87 Difference]: Start difference. First operand 28902 states and 48672 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:46:35,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:46:35,153 INFO L93 Difference]: Finished difference Result 78871 states and 134968 transitions. [2022-07-21 04:46:35,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:46:35,154 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2022-07-21 04:46:35,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:46:35,350 INFO L225 Difference]: With dead ends: 78871 [2022-07-21 04:46:35,351 INFO L226 Difference]: Without dead ends: 52974 [2022-07-21 04:46:35,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:46:35,407 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 1268 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 578 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1283 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 1780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 578 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:46:35,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1283 Valid, 1340 Invalid, 1780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [578 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 04:46:35,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52974 states. [2022-07-21 04:46:37,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52974 to 52781. [2022-07-21 04:46:37,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52781 states, 44219 states have (on average 1.591849657387096) internal successors, (70390), 44226 states have internal predecessors, (70390), 8534 states have call successors, (8534), 23 states have call predecessors, (8534), 27 states have return successors, (9679), 8533 states have call predecessors, (9679), 8533 states have call successors, (9679) [2022-07-21 04:46:38,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52781 states to 52781 states and 88603 transitions. [2022-07-21 04:46:38,041 INFO L78 Accepts]: Start accepts. Automaton has 52781 states and 88603 transitions. Word has length 129 [2022-07-21 04:46:38,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:46:38,042 INFO L495 AbstractCegarLoop]: Abstraction has 52781 states and 88603 transitions. [2022-07-21 04:46:38,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:46:38,042 INFO L276 IsEmpty]: Start isEmpty. Operand 52781 states and 88603 transitions. [2022-07-21 04:46:38,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-21 04:46:38,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:46:38,070 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] [2022-07-21 04:46:38,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 04:46:38,070 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:46:38,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:46:38,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1115203653, now seen corresponding path program 1 times [2022-07-21 04:46:38,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:46:38,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942651942] [2022-07-21 04:46:38,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:46:38,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:46:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:38,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:46:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:38,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:46:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:38,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:46:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:38,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:46:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:38,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:46:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:38,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:46:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:38,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 04:46:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:38,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 04:46:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:38,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 04:46:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:38,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 04:46:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:38,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 04:46:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:38,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 04:46:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:38,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 04:46:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:38,147 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:46:38,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:46:38,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942651942] [2022-07-21 04:46:38,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942651942] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:46:38,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:46:38,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:46:38,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868158026] [2022-07-21 04:46:38,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:46:38,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:46:38,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:46:38,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:46:38,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:46:38,149 INFO L87 Difference]: Start difference. First operand 52781 states and 88603 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:46:42,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:46:42,052 INFO L93 Difference]: Finished difference Result 98642 states and 169155 transitions. [2022-07-21 04:46:42,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:46:42,052 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2022-07-21 04:46:42,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:46:42,389 INFO L225 Difference]: With dead ends: 98642 [2022-07-21 04:46:42,389 INFO L226 Difference]: Without dead ends: 98433 [2022-07-21 04:46:42,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:46:42,566 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 1266 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 570 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 1790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 570 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:46:42,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1281 Valid, 1337 Invalid, 1790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [570 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 04:46:42,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98433 states. [2022-07-21 04:46:46,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98433 to 98240. [2022-07-21 04:46:46,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98240 states, 82879 states have (on average 1.5849612085087899) internal successors, (131360), 82886 states have internal predecessors, (131360), 15333 states have call successors, (15333), 23 states have call predecessors, (15333), 27 states have return successors, (17524), 15332 states have call predecessors, (17524), 15332 states have call successors, (17524) [2022-07-21 04:46:47,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98240 states to 98240 states and 164217 transitions. [2022-07-21 04:46:47,163 INFO L78 Accepts]: Start accepts. Automaton has 98240 states and 164217 transitions. Word has length 130 [2022-07-21 04:46:47,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:46:47,164 INFO L495 AbstractCegarLoop]: Abstraction has 98240 states and 164217 transitions. [2022-07-21 04:46:47,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:46:47,164 INFO L276 IsEmpty]: Start isEmpty. Operand 98240 states and 164217 transitions. [2022-07-21 04:46:47,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-21 04:46:47,199 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:46:47,199 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] [2022-07-21 04:46:47,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 04:46:47,199 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:46:47,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:46:47,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1651072355, now seen corresponding path program 1 times [2022-07-21 04:46:47,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:46:47,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860062493] [2022-07-21 04:46:47,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:46:47,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:46:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:47,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:46:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:47,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:46:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:47,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:46:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:47,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:46:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:47,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:46:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:47,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:46:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:47,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 04:46:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:47,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 04:46:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:47,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:46:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:47,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 04:46:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:47,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 04:46:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:47,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-21 04:46:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:47,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 04:46:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:46:47,406 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:46:47,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:46:47,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860062493] [2022-07-21 04:46:47,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860062493] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:46:47,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:46:47,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 04:46:47,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758227881] [2022-07-21 04:46:47,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:46:47,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 04:46:47,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:46:47,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 04:46:47,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2022-07-21 04:46:47,409 INFO L87 Difference]: Start difference. First operand 98240 states and 164217 transitions. Second operand has 18 states, 16 states have (on average 5.625) internal successors, (90), 12 states have internal predecessors, (90), 6 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-21 04:47:00,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:47:00,405 INFO L93 Difference]: Finished difference Result 196790 states and 340729 transitions. [2022-07-21 04:47:00,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-21 04:47:00,405 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.625) internal successors, (90), 12 states have internal predecessors, (90), 6 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 131 [2022-07-21 04:47:00,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:47:01,666 INFO L225 Difference]: With dead ends: 196790 [2022-07-21 04:47:01,667 INFO L226 Difference]: Without dead ends: 196587 [2022-07-21 04:47:01,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1280 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=872, Invalid=3820, Unknown=0, NotChecked=0, Total=4692 [2022-07-21 04:47:01,783 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 4803 mSDsluCounter, 2793 mSDsCounter, 0 mSdLazyCounter, 12498 mSolverCounterSat, 2916 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4803 SdHoareTripleChecker+Valid, 3622 SdHoareTripleChecker+Invalid, 15414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2916 IncrementalHoareTripleChecker+Valid, 12498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:47:01,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4803 Valid, 3622 Invalid, 15414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2916 Valid, 12498 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-07-21 04:47:01,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196587 states. [2022-07-21 04:47:10,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196587 to 195827. [2022-07-21 04:47:10,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195827 states, 165252 states have (on average 1.585554183913054) internal successors, (262016), 165159 states have internal predecessors, (262016), 30502 states have call successors, (30502), 62 states have call predecessors, (30502), 72 states have return successors, (38165), 30613 states have call predecessors, (38165), 30499 states have call successors, (38165) [2022-07-21 04:47:11,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195827 states to 195827 states and 330683 transitions. [2022-07-21 04:47:11,606 INFO L78 Accepts]: Start accepts. Automaton has 195827 states and 330683 transitions. Word has length 131 [2022-07-21 04:47:11,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:47:11,607 INFO L495 AbstractCegarLoop]: Abstraction has 195827 states and 330683 transitions. [2022-07-21 04:47:11,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.625) internal successors, (90), 12 states have internal predecessors, (90), 6 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-21 04:47:11,607 INFO L276 IsEmpty]: Start isEmpty. Operand 195827 states and 330683 transitions. [2022-07-21 04:47:11,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-21 04:47:11,676 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:47:11,676 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] [2022-07-21 04:47:11,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 04:47:11,677 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:47:11,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:47:11,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1534664872, now seen corresponding path program 1 times [2022-07-21 04:47:11,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:47:11,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120702034] [2022-07-21 04:47:11,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:47:11,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:47:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:47:11,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:47:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:47:11,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:47:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:47:11,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:47:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:47:11,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:47:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:47:11,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:47:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:47:11,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:47:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:47:11,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 04:47:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:47:11,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 04:47:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:47:11,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:47:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:47:11,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 04:47:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:47:11,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 04:47:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:47:11,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 04:47:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:47:11,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-21 04:47:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:47:11,798 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:47:11,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:47:11,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120702034] [2022-07-21 04:47:11,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120702034] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:47:11,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:47:11,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 04:47:11,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244376745] [2022-07-21 04:47:11,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:47:11,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 04:47:11,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:47:11,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 04:47:11,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:47:11,800 INFO L87 Difference]: Start difference. First operand 195827 states and 330683 transitions. Second operand has 14 states, 14 states have (on average 6.5) internal successors, (91), 8 states have internal predecessors, (91), 5 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13)