./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec9_product15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec9_product15.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 3a5e24a2ecd4f1b82ac6c9f3672db1eec2c6845bb52ab38fa9dd83ecce424f6f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 13:12:22,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 13:12:22,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 13:12:22,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 13:12:22,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 13:12:22,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 13:12:22,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 13:12:22,070 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 13:12:22,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 13:12:22,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 13:12:22,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 13:12:22,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 13:12:22,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 13:12:22,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 13:12:22,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 13:12:22,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 13:12:22,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 13:12:22,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 13:12:22,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 13:12:22,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 13:12:22,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 13:12:22,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 13:12:22,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 13:12:22,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 13:12:22,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 13:12:22,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 13:12:22,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 13:12:22,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 13:12:22,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 13:12:22,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 13:12:22,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 13:12:22,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 13:12:22,103 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 13:12:22,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 13:12:22,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 13:12:22,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 13:12:22,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 13:12:22,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 13:12:22,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 13:12:22,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 13:12:22,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 13:12:22,108 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 13:12:22,135 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 13:12:22,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 13:12:22,136 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 13:12:22,136 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 13:12:22,136 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 13:12:22,136 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 13:12:22,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 13:12:22,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 13:12:22,137 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 13:12:22,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 13:12:22,138 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 13:12:22,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 13:12:22,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 13:12:22,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 13:12:22,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 13:12:22,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 13:12:22,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 13:12:22,139 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 13:12:22,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 13:12:22,139 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 13:12:22,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 13:12:22,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 13:12:22,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 13:12:22,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 13:12:22,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:12:22,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 13:12:22,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 13:12:22,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 13:12:22,142 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 13:12:22,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 13:12:22,142 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 13:12:22,142 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 13:12:22,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 13:12:22,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 13:12:22,143 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a5e24a2ecd4f1b82ac6c9f3672db1eec2c6845bb52ab38fa9dd83ecce424f6f [2021-12-21 13:12:22,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 13:12:22,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 13:12:22,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 13:12:22,335 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 13:12:22,335 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 13:12:22,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec9_product15.cil.c [2021-12-21 13:12:22,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de2cd75a5/c9ff670bbd1042f6879034f6068246f5/FLAGf43dbefc5 [2021-12-21 13:12:22,832 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 13:12:22,832 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec9_product15.cil.c [2021-12-21 13:12:22,864 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de2cd75a5/c9ff670bbd1042f6879034f6068246f5/FLAGf43dbefc5 [2021-12-21 13:12:23,183 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de2cd75a5/c9ff670bbd1042f6879034f6068246f5 [2021-12-21 13:12:23,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 13:12:23,186 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 13:12:23,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 13:12:23,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 13:12:23,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 13:12:23,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:12:23" (1/1) ... [2021-12-21 13:12:23,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d99aafe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:12:23, skipping insertion in model container [2021-12-21 13:12:23,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:12:23" (1/1) ... [2021-12-21 13:12:23,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 13:12:23,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 13:12:23,563 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec9_product15.cil.c[51080,51093] [2021-12-21 13:12:23,613 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:12:23,627 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 13:12:23,708 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec9_product15.cil.c[51080,51093] [2021-12-21 13:12:23,724 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:12:23,749 INFO L208 MainTranslator]: Completed translation [2021-12-21 13:12:23,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:12:23 WrapperNode [2021-12-21 13:12:23,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 13:12:23,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 13:12:23,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 13:12:23,751 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 13:12:23,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:12:23" (1/1) ... [2021-12-21 13:12:23,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:12:23" (1/1) ... [2021-12-21 13:12:23,825 INFO L137 Inliner]: procedures = 126, calls = 201, calls flagged for inlining = 55, calls inlined = 46, statements flattened = 889 [2021-12-21 13:12:23,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 13:12:23,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 13:12:23,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 13:12:23,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 13:12:23,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:12:23" (1/1) ... [2021-12-21 13:12:23,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:12:23" (1/1) ... [2021-12-21 13:12:23,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:12:23" (1/1) ... [2021-12-21 13:12:23,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:12:23" (1/1) ... [2021-12-21 13:12:23,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:12:23" (1/1) ... [2021-12-21 13:12:23,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:12:23" (1/1) ... [2021-12-21 13:12:23,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:12:23" (1/1) ... [2021-12-21 13:12:23,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 13:12:23,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 13:12:23,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 13:12:23,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 13:12:23,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:12:23" (1/1) ... [2021-12-21 13:12:23,884 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:12:23,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:12:23,921 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 13:12:23,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 13:12:23,964 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-21 13:12:23,964 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-21 13:12:23,964 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-21 13:12:23,964 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-21 13:12:23,965 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-21 13:12:23,965 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-21 13:12:23,965 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-21 13:12:23,965 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-21 13:12:23,965 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-21 13:12:23,965 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-21 13:12:23,965 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-21 13:12:23,965 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-21 13:12:23,966 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-21 13:12:23,966 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-21 13:12:23,966 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-21 13:12:23,966 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-21 13:12:23,966 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-21 13:12:23,966 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-21 13:12:23,966 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-21 13:12:23,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 13:12:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-21 13:12:23,967 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-21 13:12:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-21 13:12:23,967 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-21 13:12:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-21 13:12:23,967 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-21 13:12:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-21 13:12:23,967 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-21 13:12:23,968 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-21 13:12:23,968 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-21 13:12:23,968 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-21 13:12:23,968 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-21 13:12:23,968 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-21 13:12:23,968 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-21 13:12:23,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 13:12:23,969 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-21 13:12:23,969 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-21 13:12:23,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 13:12:23,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 13:12:24,135 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 13:12:24,137 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 13:12:24,511 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 13:12:24,518 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 13:12:24,518 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 13:12:24,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:12:24 BoogieIcfgContainer [2021-12-21 13:12:24,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 13:12:24,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 13:12:24,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 13:12:24,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 13:12:24,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:12:23" (1/3) ... [2021-12-21 13:12:24,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf5e74f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:12:24, skipping insertion in model container [2021-12-21 13:12:24,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:12:23" (2/3) ... [2021-12-21 13:12:24,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf5e74f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:12:24, skipping insertion in model container [2021-12-21 13:12:24,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:12:24" (3/3) ... [2021-12-21 13:12:24,525 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec9_product15.cil.c [2021-12-21 13:12:24,529 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 13:12:24,529 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 13:12:24,559 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 13:12:24,564 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 13:12:24,564 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 13:12:24,578 INFO L276 IsEmpty]: Start isEmpty. Operand has 287 states, 226 states have (on average 1.5442477876106195) internal successors, (349), 230 states have internal predecessors, (349), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-12-21 13:12:24,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-21 13:12:24,587 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:24,587 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:24,588 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:24,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:24,591 INFO L85 PathProgramCache]: Analyzing trace with hash -424898417, now seen corresponding path program 1 times [2021-12-21 13:12:24,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:24,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569880199] [2021-12-21 13:12:24,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:24,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:24,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:24,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:24,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:24,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:24,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:12:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:24,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:12:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:24,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:12:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:24,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 13:12:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:24,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 13:12:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:24,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 13:12:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:24,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 13:12:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:24,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 13:12:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:25,002 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-21 13:12:25,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:25,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569880199] [2021-12-21 13:12:25,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569880199] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:12:25,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766700275] [2021-12-21 13:12:25,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:25,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:12:25,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:12:25,020 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:12:25,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 13:12:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:25,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-21 13:12:25,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:12:25,429 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-21 13:12:25,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:12:25,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766700275] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:25,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:12:25,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-21 13:12:25,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612990240] [2021-12-21 13:12:25,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:25,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 13:12:25,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:25,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 13:12:25,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:12:25,466 INFO L87 Difference]: Start difference. First operand has 287 states, 226 states have (on average 1.5442477876106195) internal successors, (349), 230 states have internal predecessors, (349), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 13:12:25,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:25,514 INFO L93 Difference]: Finished difference Result 420 states and 620 transitions. [2021-12-21 13:12:25,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 13:12:25,524 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 89 [2021-12-21 13:12:25,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:25,540 INFO L225 Difference]: With dead ends: 420 [2021-12-21 13:12:25,541 INFO L226 Difference]: Without dead ends: 280 [2021-12-21 13:12:25,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:12:25,548 INFO L933 BasicCegarLoop]: 429 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, 429 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:25,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:12:25,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-12-21 13:12:25,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2021-12-21 13:12:25,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 220 states have (on average 1.5363636363636364) internal successors, (338), 223 states have internal predecessors, (338), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-12-21 13:12:25,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 421 transitions. [2021-12-21 13:12:25,595 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 421 transitions. Word has length 89 [2021-12-21 13:12:25,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:25,596 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 421 transitions. [2021-12-21 13:12:25,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 13:12:25,597 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 421 transitions. [2021-12-21 13:12:25,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-21 13:12:25,601 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:25,601 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:25,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-21 13:12:25,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-21 13:12:25,818 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:25,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:25,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1235825051, now seen corresponding path program 1 times [2021-12-21 13:12:25,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:25,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707881113] [2021-12-21 13:12:25,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:25,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:25,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:25,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:25,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:26,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:12:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:26,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:12:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:26,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:12:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:26,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 13:12:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:26,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 13:12:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:26,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:12:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:26,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 13:12:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:26,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 13:12:26,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:26,069 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-21 13:12:26,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:26,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707881113] [2021-12-21 13:12:26,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707881113] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:12:26,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603841219] [2021-12-21 13:12:26,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:26,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:12:26,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:12:26,075 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:12:26,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 13:12:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:26,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 13:12:26,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:12:26,451 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-21 13:12:26,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:12:26,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603841219] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:26,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:12:26,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-21 13:12:26,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622241580] [2021-12-21 13:12:26,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:26,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:12:26,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:26,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:12:26,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:12:26,454 INFO L87 Difference]: Start difference. First operand 280 states and 421 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 13:12:26,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:26,474 INFO L93 Difference]: Finished difference Result 410 states and 601 transitions. [2021-12-21 13:12:26,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:12:26,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 90 [2021-12-21 13:12:26,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:26,477 INFO L225 Difference]: With dead ends: 410 [2021-12-21 13:12:26,477 INFO L226 Difference]: Without dead ends: 283 [2021-12-21 13:12:26,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:12:26,478 INFO L933 BasicCegarLoop]: 419 mSDtfsCounter, 1 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:26,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 836 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:12:26,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-12-21 13:12:26,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 282. [2021-12-21 13:12:26,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 222 states have (on average 1.5315315315315314) internal successors, (340), 225 states have internal predecessors, (340), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-12-21 13:12:26,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 423 transitions. [2021-12-21 13:12:26,493 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 423 transitions. Word has length 90 [2021-12-21 13:12:26,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:26,493 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 423 transitions. [2021-12-21 13:12:26,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 13:12:26,494 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 423 transitions. [2021-12-21 13:12:26,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-21 13:12:26,497 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:26,497 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:26,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-21 13:12:26,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-21 13:12:26,711 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:26,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:26,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1363663514, now seen corresponding path program 1 times [2021-12-21 13:12:26,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:26,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809521706] [2021-12-21 13:12:26,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:26,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:26,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:26,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:26,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:26,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:12:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:26,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:12:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:26,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:12:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:26,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 13:12:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:26,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:12:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:26,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 13:12:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:26,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 13:12:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:26,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 13:12:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:26,849 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-21 13:12:26,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:26,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809521706] [2021-12-21 13:12:26,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809521706] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:12:26,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170248987] [2021-12-21 13:12:26,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:26,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:12:26,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:12:26,852 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:12:26,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 13:12:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:27,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 13:12:27,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:12:27,169 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-21 13:12:27,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:12:27,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170248987] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:27,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:12:27,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-21 13:12:27,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163523812] [2021-12-21 13:12:27,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:27,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:12:27,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:27,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:12:27,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:12:27,171 INFO L87 Difference]: Start difference. First operand 282 states and 423 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 13:12:27,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:27,190 INFO L93 Difference]: Finished difference Result 594 states and 905 transitions. [2021-12-21 13:12:27,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:12:27,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 99 [2021-12-21 13:12:27,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:27,193 INFO L225 Difference]: With dead ends: 594 [2021-12-21 13:12:27,193 INFO L226 Difference]: Without dead ends: 339 [2021-12-21 13:12:27,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:12:27,195 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 107 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:27,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 820 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:12:27,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-12-21 13:12:27,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 331. [2021-12-21 13:12:27,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 260 states have (on average 1.5461538461538462) internal successors, (402), 263 states have internal predecessors, (402), 53 states have call successors, (53), 17 states have call predecessors, (53), 17 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-21 13:12:27,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 507 transitions. [2021-12-21 13:12:27,211 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 507 transitions. Word has length 99 [2021-12-21 13:12:27,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:27,212 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 507 transitions. [2021-12-21 13:12:27,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 13:12:27,212 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 507 transitions. [2021-12-21 13:12:27,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-21 13:12:27,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:27,216 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:27,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 13:12:27,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:12:27,453 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:27,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:27,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1065487752, now seen corresponding path program 1 times [2021-12-21 13:12:27,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:27,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146451633] [2021-12-21 13:12:27,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:27,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:27,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:27,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:27,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:27,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:12:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:27,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:12:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:27,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:12:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:27,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 13:12:27,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:27,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 13:12:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:27,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 13:12:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:27,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 13:12:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:27,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 13:12:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:27,542 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-21 13:12:27,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:27,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146451633] [2021-12-21 13:12:27,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146451633] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:12:27,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80087574] [2021-12-21 13:12:27,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:27,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:12:27,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:12:27,560 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:12:27,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 13:12:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:27,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 13:12:27,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:12:27,955 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-21 13:12:27,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:12:27,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80087574] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:27,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:12:27,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-21 13:12:27,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206338541] [2021-12-21 13:12:27,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:27,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:12:27,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:27,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:12:27,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-21 13:12:27,958 INFO L87 Difference]: Start difference. First operand 331 states and 507 transitions. Second operand has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-21 13:12:28,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:28,022 INFO L93 Difference]: Finished difference Result 653 states and 1004 transitions. [2021-12-21 13:12:28,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:12:28,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 100 [2021-12-21 13:12:28,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:28,026 INFO L225 Difference]: With dead ends: 653 [2021-12-21 13:12:28,026 INFO L226 Difference]: Without dead ends: 333 [2021-12-21 13:12:28,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:12:28,029 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 125 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:28,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1504 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:12:28,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-12-21 13:12:28,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2021-12-21 13:12:28,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 261 states have (on average 1.5440613026819923) internal successors, (403), 265 states have internal predecessors, (403), 53 states have call successors, (53), 17 states have call predecessors, (53), 18 states have return successors, (54), 52 states have call predecessors, (54), 52 states have call successors, (54) [2021-12-21 13:12:28,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 510 transitions. [2021-12-21 13:12:28,057 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 510 transitions. Word has length 100 [2021-12-21 13:12:28,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:28,059 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 510 transitions. [2021-12-21 13:12:28,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-21 13:12:28,059 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 510 transitions. [2021-12-21 13:12:28,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-21 13:12:28,064 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:28,064 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:28,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 13:12:28,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:12:28,283 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:28,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:28,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1218296481, now seen corresponding path program 1 times [2021-12-21 13:12:28,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:28,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635692550] [2021-12-21 13:12:28,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:28,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:28,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:28,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:28,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:28,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:28,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:28,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 13:12:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:28,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 13:12:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:28,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 13:12:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:28,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 13:12:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:28,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 13:12:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:28,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 13:12:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:28,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 13:12:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:28,414 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-21 13:12:28,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:28,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635692550] [2021-12-21 13:12:28,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635692550] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:12:28,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672141579] [2021-12-21 13:12:28,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:28,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:12:28,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:12:28,440 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:12:28,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 13:12:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:28,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 994 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 13:12:28,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:12:28,790 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-21 13:12:28,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:12:28,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672141579] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:28,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:12:28,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-21 13:12:28,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642019690] [2021-12-21 13:12:28,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:28,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:12:28,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:28,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:12:28,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-21 13:12:28,793 INFO L87 Difference]: Start difference. First operand 333 states and 510 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-21 13:12:28,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:28,837 INFO L93 Difference]: Finished difference Result 655 states and 1009 transitions. [2021-12-21 13:12:28,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:12:28,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 101 [2021-12-21 13:12:28,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:28,839 INFO L225 Difference]: With dead ends: 655 [2021-12-21 13:12:28,839 INFO L226 Difference]: Without dead ends: 335 [2021-12-21 13:12:28,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-21 13:12:28,841 INFO L933 BasicCegarLoop]: 410 mSDtfsCounter, 124 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:28,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1493 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:12:28,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-12-21 13:12:28,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2021-12-21 13:12:28,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 262 states have (on average 1.5419847328244274) internal successors, (404), 267 states have internal predecessors, (404), 53 states have call successors, (53), 17 states have call predecessors, (53), 19 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2021-12-21 13:12:28,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 516 transitions. [2021-12-21 13:12:28,851 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 516 transitions. Word has length 101 [2021-12-21 13:12:28,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:28,852 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 516 transitions. [2021-12-21 13:12:28,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-21 13:12:28,852 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 516 transitions. [2021-12-21 13:12:28,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-21 13:12:28,853 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:28,853 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:28,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 13:12:29,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:12:29,086 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:29,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:29,086 INFO L85 PathProgramCache]: Analyzing trace with hash 911760390, now seen corresponding path program 1 times [2021-12-21 13:12:29,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:29,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151061844] [2021-12-21 13:12:29,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:29,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:29,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:29,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:29,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:29,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:29,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:29,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 13:12:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:29,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 13:12:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:29,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 13:12:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:29,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 13:12:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:29,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 13:12:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:29,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 13:12:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:29,184 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-21 13:12:29,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:29,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151061844] [2021-12-21 13:12:29,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151061844] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:29,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:29,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 13:12:29,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868712502] [2021-12-21 13:12:29,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:29,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 13:12:29,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:29,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 13:12:29,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:12:29,186 INFO L87 Difference]: Start difference. First operand 335 states and 516 transitions. Second operand has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-21 13:12:30,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:30,123 INFO L93 Difference]: Finished difference Result 740 states and 1142 transitions. [2021-12-21 13:12:30,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 13:12:30,123 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 102 [2021-12-21 13:12:30,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:30,126 INFO L225 Difference]: With dead ends: 740 [2021-12-21 13:12:30,126 INFO L226 Difference]: Without dead ends: 428 [2021-12-21 13:12:30,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-21 13:12:30,128 INFO L933 BasicCegarLoop]: 473 mSDtfsCounter, 971 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:30,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [988 Valid, 1455 Invalid, 1626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 1314 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 13:12:30,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-12-21 13:12:30,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 335. [2021-12-21 13:12:30,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 262 states have (on average 1.5419847328244274) internal successors, (404), 267 states have internal predecessors, (404), 53 states have call successors, (53), 17 states have call predecessors, (53), 19 states have return successors, (58), 52 states have call predecessors, (58), 52 states have call successors, (58) [2021-12-21 13:12:30,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 515 transitions. [2021-12-21 13:12:30,159 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 515 transitions. Word has length 102 [2021-12-21 13:12:30,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:30,159 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 515 transitions. [2021-12-21 13:12:30,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-21 13:12:30,160 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 515 transitions. [2021-12-21 13:12:30,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-21 13:12:30,161 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:30,161 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:30,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 13:12:30,161 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:30,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:30,162 INFO L85 PathProgramCache]: Analyzing trace with hash -257413121, now seen corresponding path program 2 times [2021-12-21 13:12:30,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:30,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068333973] [2021-12-21 13:12:30,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:30,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:30,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:30,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:30,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:30,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:30,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:30,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 13:12:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:30,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 13:12:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:30,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 13:12:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:30,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 13:12:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:30,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 13:12:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:30,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 13:12:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:30,238 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-21 13:12:30,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:30,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068333973] [2021-12-21 13:12:30,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068333973] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:30,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:30,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 13:12:30,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59491591] [2021-12-21 13:12:30,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:30,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 13:12:30,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:30,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 13:12:30,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:12:30,240 INFO L87 Difference]: Start difference. First operand 335 states and 515 transitions. Second operand has 9 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-21 13:12:31,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:31,174 INFO L93 Difference]: Finished difference Result 742 states and 1145 transitions. [2021-12-21 13:12:31,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 13:12:31,175 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 103 [2021-12-21 13:12:31,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:31,176 INFO L225 Difference]: With dead ends: 742 [2021-12-21 13:12:31,177 INFO L226 Difference]: Without dead ends: 430 [2021-12-21 13:12:31,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-21 13:12:31,178 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 966 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 1637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:31,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [983 Valid, 1456 Invalid, 1637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 13:12:31,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-12-21 13:12:31,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 337. [2021-12-21 13:12:31,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 263 states have (on average 1.5399239543726235) internal successors, (405), 269 states have internal predecessors, (405), 53 states have call successors, (53), 17 states have call predecessors, (53), 20 states have return successors, (60), 52 states have call predecessors, (60), 52 states have call successors, (60) [2021-12-21 13:12:31,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 518 transitions. [2021-12-21 13:12:31,193 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 518 transitions. Word has length 103 [2021-12-21 13:12:31,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:31,193 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 518 transitions. [2021-12-21 13:12:31,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-21 13:12:31,193 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 518 transitions. [2021-12-21 13:12:31,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-21 13:12:31,195 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:31,195 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:31,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 13:12:31,204 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:31,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:31,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1904686847, now seen corresponding path program 1 times [2021-12-21 13:12:31,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:31,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865404368] [2021-12-21 13:12:31,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:31,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:31,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:31,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:31,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:31,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:31,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:31,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:12:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:31,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:12:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:31,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 13:12:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:31,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 13:12:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:31,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 13:12:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:31,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 13:12:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:31,351 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-21 13:12:31,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:31,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865404368] [2021-12-21 13:12:31,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865404368] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:31,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:31,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-21 13:12:31,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662339260] [2021-12-21 13:12:31,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:31,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 13:12:31,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:31,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 13:12:31,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-21 13:12:31,353 INFO L87 Difference]: Start difference. First operand 337 states and 518 transitions. Second operand has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-21 13:12:32,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:32,713 INFO L93 Difference]: Finished difference Result 740 states and 1140 transitions. [2021-12-21 13:12:32,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 13:12:32,714 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 104 [2021-12-21 13:12:32,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:32,716 INFO L225 Difference]: With dead ends: 740 [2021-12-21 13:12:32,716 INFO L226 Difference]: Without dead ends: 430 [2021-12-21 13:12:32,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-21 13:12:32,717 INFO L933 BasicCegarLoop]: 460 mSDtfsCounter, 1078 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 2388 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 2757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 2388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:32,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1078 Valid, 1870 Invalid, 2757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 2388 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 13:12:32,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-12-21 13:12:32,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 337. [2021-12-21 13:12:32,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 263 states have (on average 1.5399239543726235) internal successors, (405), 269 states have internal predecessors, (405), 53 states have call successors, (53), 17 states have call predecessors, (53), 20 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2021-12-21 13:12:32,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 517 transitions. [2021-12-21 13:12:32,731 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 517 transitions. Word has length 104 [2021-12-21 13:12:32,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:32,731 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 517 transitions. [2021-12-21 13:12:32,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-21 13:12:32,732 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 517 transitions. [2021-12-21 13:12:32,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-21 13:12:32,733 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:32,733 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:32,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 13:12:32,733 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:32,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:32,734 INFO L85 PathProgramCache]: Analyzing trace with hash -194989370, now seen corresponding path program 2 times [2021-12-21 13:12:32,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:32,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189433267] [2021-12-21 13:12:32,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:32,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:32,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:32,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:32,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:32,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:32,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:32,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:12:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:32,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 13:12:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:32,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 13:12:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:32,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 13:12:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:32,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 13:12:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:32,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 13:12:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:32,849 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-21 13:12:32,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:32,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189433267] [2021-12-21 13:12:32,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189433267] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:32,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:32,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-21 13:12:32,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723398380] [2021-12-21 13:12:32,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:32,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 13:12:32,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:32,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 13:12:32,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-21 13:12:32,851 INFO L87 Difference]: Start difference. First operand 337 states and 517 transitions. Second operand has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-21 13:12:34,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:34,159 INFO L93 Difference]: Finished difference Result 742 states and 1146 transitions. [2021-12-21 13:12:34,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 13:12:34,160 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 105 [2021-12-21 13:12:34,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:34,162 INFO L225 Difference]: With dead ends: 742 [2021-12-21 13:12:34,162 INFO L226 Difference]: Without dead ends: 432 [2021-12-21 13:12:34,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-21 13:12:34,164 INFO L933 BasicCegarLoop]: 461 mSDtfsCounter, 1073 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 2430 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 1871 SdHoareTripleChecker+Invalid, 2789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 2430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:34,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1073 Valid, 1871 Invalid, 2789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 2430 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 13:12:34,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-12-21 13:12:34,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 339. [2021-12-21 13:12:34,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 264 states have (on average 1.5378787878787878) internal successors, (406), 271 states have internal predecessors, (406), 53 states have call successors, (53), 17 states have call predecessors, (53), 21 states have return successors, (64), 52 states have call predecessors, (64), 52 states have call successors, (64) [2021-12-21 13:12:34,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 523 transitions. [2021-12-21 13:12:34,181 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 523 transitions. Word has length 105 [2021-12-21 13:12:34,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:34,181 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 523 transitions. [2021-12-21 13:12:34,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-21 13:12:34,182 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 523 transitions. [2021-12-21 13:12:34,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-21 13:12:34,184 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:34,184 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:34,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 13:12:34,184 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:34,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:34,185 INFO L85 PathProgramCache]: Analyzing trace with hash 816721852, now seen corresponding path program 1 times [2021-12-21 13:12:34,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:34,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057815695] [2021-12-21 13:12:34,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:34,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:34,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:34,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:34,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:34,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:34,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:34,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:12:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:34,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 13:12:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:34,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 13:12:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:34,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:12:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:34,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 13:12:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:34,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 13:12:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:34,299 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-21 13:12:34,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:34,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057815695] [2021-12-21 13:12:34,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057815695] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:12:34,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817455731] [2021-12-21 13:12:34,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:34,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:12:34,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:12:34,309 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:12:34,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 13:12:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:34,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 13:12:34,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:12:34,619 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:12:34,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 13:12:34,767 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:12:34,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817455731] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 13:12:34,768 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 13:12:34,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-21 13:12:34,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377206401] [2021-12-21 13:12:34,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 13:12:34,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-21 13:12:34,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:34,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-21 13:12:34,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-21 13:12:34,771 INFO L87 Difference]: Start difference. First operand 339 states and 523 transitions. Second operand has 15 states, 14 states have (on average 8.571428571428571) internal successors, (120), 11 states have internal predecessors, (120), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-21 13:12:37,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:37,095 INFO L93 Difference]: Finished difference Result 1421 states and 2374 transitions. [2021-12-21 13:12:37,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-21 13:12:37,095 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 8.571428571428571) internal successors, (120), 11 states have internal predecessors, (120), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 106 [2021-12-21 13:12:37,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:37,102 INFO L225 Difference]: With dead ends: 1421 [2021-12-21 13:12:37,102 INFO L226 Difference]: Without dead ends: 1113 [2021-12-21 13:12:37,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-12-21 13:12:37,104 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 2568 mSDsluCounter, 2960 mSDsCounter, 0 mSdLazyCounter, 3797 mSolverCounterSat, 963 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2570 SdHoareTripleChecker+Valid, 3605 SdHoareTripleChecker+Invalid, 4760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 963 IncrementalHoareTripleChecker+Valid, 3797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:37,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2570 Valid, 3605 Invalid, 4760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [963 Valid, 3797 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-21 13:12:37,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2021-12-21 13:12:37,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 667. [2021-12-21 13:12:37,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 528 states have (on average 1.5852272727272727) internal successors, (837), 535 states have internal predecessors, (837), 117 states have call successors, (117), 17 states have call predecessors, (117), 21 states have return successors, (138), 116 states have call predecessors, (138), 116 states have call successors, (138) [2021-12-21 13:12:37,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1092 transitions. [2021-12-21 13:12:37,143 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1092 transitions. Word has length 106 [2021-12-21 13:12:37,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:37,143 INFO L470 AbstractCegarLoop]: Abstraction has 667 states and 1092 transitions. [2021-12-21 13:12:37,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 8.571428571428571) internal successors, (120), 11 states have internal predecessors, (120), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-21 13:12:37,144 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1092 transitions. [2021-12-21 13:12:37,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-21 13:12:37,146 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:37,146 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:37,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-21 13:12:37,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:12:37,365 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:37,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:37,365 INFO L85 PathProgramCache]: Analyzing trace with hash -725397729, now seen corresponding path program 1 times [2021-12-21 13:12:37,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:37,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81901640] [2021-12-21 13:12:37,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:37,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:37,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:37,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:37,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:37,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:37,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:37,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:12:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:37,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 13:12:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:37,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 13:12:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:37,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 13:12:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:37,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 13:12:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:37,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 13:12:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:37,480 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:12:37,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:37,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81901640] [2021-12-21 13:12:37,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81901640] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:37,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:37,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:12:37,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774644496] [2021-12-21 13:12:37,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:37,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:12:37,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:37,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:12:37,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:12:37,483 INFO L87 Difference]: Start difference. First operand 667 states and 1092 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 13:12:38,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:38,248 INFO L93 Difference]: Finished difference Result 1657 states and 2777 transitions. [2021-12-21 13:12:38,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:12:38,248 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2021-12-21 13:12:38,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:38,253 INFO L225 Difference]: With dead ends: 1657 [2021-12-21 13:12:38,253 INFO L226 Difference]: Without dead ends: 1068 [2021-12-21 13:12:38,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:12:38,256 INFO L933 BasicCegarLoop]: 507 mSDtfsCounter, 961 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:38,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 1224 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-21 13:12:38,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-12-21 13:12:38,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 967. [2021-12-21 13:12:38,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 764 states have (on average 1.5994764397905759) internal successors, (1222), 771 states have internal predecessors, (1222), 181 states have call successors, (181), 17 states have call predecessors, (181), 21 states have return successors, (212), 180 states have call predecessors, (212), 180 states have call successors, (212) [2021-12-21 13:12:38,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1615 transitions. [2021-12-21 13:12:38,328 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1615 transitions. Word has length 109 [2021-12-21 13:12:38,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:38,328 INFO L470 AbstractCegarLoop]: Abstraction has 967 states and 1615 transitions. [2021-12-21 13:12:38,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 13:12:38,329 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1615 transitions. [2021-12-21 13:12:38,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-21 13:12:38,331 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:38,331 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:38,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 13:12:38,332 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:38,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:38,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1316821944, now seen corresponding path program 1 times [2021-12-21 13:12:38,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:38,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484885636] [2021-12-21 13:12:38,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:38,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:38,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:38,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:38,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:38,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:38,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:38,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:12:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:38,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 13:12:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:38,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 13:12:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:38,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 13:12:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:38,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 13:12:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:38,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 13:12:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:38,401 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:12:38,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:38,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484885636] [2021-12-21 13:12:38,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484885636] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:38,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:38,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:12:38,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939415736] [2021-12-21 13:12:38,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:38,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:12:38,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:38,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:12:38,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:12:38,403 INFO L87 Difference]: Start difference. First operand 967 states and 1615 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 13:12:39,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:39,245 INFO L93 Difference]: Finished difference Result 2397 states and 4057 transitions. [2021-12-21 13:12:39,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:12:39,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2021-12-21 13:12:39,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:39,252 INFO L225 Difference]: With dead ends: 2397 [2021-12-21 13:12:39,253 INFO L226 Difference]: Without dead ends: 1561 [2021-12-21 13:12:39,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:12:39,255 INFO L933 BasicCegarLoop]: 506 mSDtfsCounter, 959 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:39,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [974 Valid, 1234 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-21 13:12:39,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2021-12-21 13:12:39,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1460. [2021-12-21 13:12:39,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1162 states have (on average 1.604130808950086) internal successors, (1864), 1169 states have internal predecessors, (1864), 276 states have call successors, (276), 17 states have call predecessors, (276), 21 states have return successors, (307), 275 states have call predecessors, (307), 275 states have call successors, (307) [2021-12-21 13:12:39,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2447 transitions. [2021-12-21 13:12:39,323 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2447 transitions. Word has length 110 [2021-12-21 13:12:39,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:39,323 INFO L470 AbstractCegarLoop]: Abstraction has 1460 states and 2447 transitions. [2021-12-21 13:12:39,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 13:12:39,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2447 transitions. [2021-12-21 13:12:39,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-21 13:12:39,327 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:39,327 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:39,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 13:12:39,328 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:39,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:39,328 INFO L85 PathProgramCache]: Analyzing trace with hash 15321997, now seen corresponding path program 1 times [2021-12-21 13:12:39,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:39,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121360977] [2021-12-21 13:12:39,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:39,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:39,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:39,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:39,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:39,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:39,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:39,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:39,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:39,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:12:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:39,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 13:12:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:39,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 13:12:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:39,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 13:12:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:39,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 13:12:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:39,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 13:12:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:39,427 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:12:39,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:39,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121360977] [2021-12-21 13:12:39,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121360977] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:39,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:39,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:12:39,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616755685] [2021-12-21 13:12:39,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:39,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:12:39,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:39,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:12:39,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:12:39,430 INFO L87 Difference]: Start difference. First operand 1460 states and 2447 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 13:12:40,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:40,262 INFO L93 Difference]: Finished difference Result 3499 states and 5975 transitions. [2021-12-21 13:12:40,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:12:40,263 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2021-12-21 13:12:40,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:40,274 INFO L225 Difference]: With dead ends: 3499 [2021-12-21 13:12:40,274 INFO L226 Difference]: Without dead ends: 2305 [2021-12-21 13:12:40,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:12:40,308 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 957 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:40,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [972 Valid, 1211 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-21 13:12:40,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2305 states. [2021-12-21 13:12:40,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2305 to 2204. [2021-12-21 13:12:40,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2204 states, 1783 states have (on average 1.6079641054402691) internal successors, (2867), 1790 states have internal predecessors, (2867), 399 states have call successors, (399), 17 states have call predecessors, (399), 21 states have return successors, (446), 398 states have call predecessors, (446), 398 states have call successors, (446) [2021-12-21 13:12:40,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 3712 transitions. [2021-12-21 13:12:40,423 INFO L78 Accepts]: Start accepts. Automaton has 2204 states and 3712 transitions. Word has length 111 [2021-12-21 13:12:40,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:40,423 INFO L470 AbstractCegarLoop]: Abstraction has 2204 states and 3712 transitions. [2021-12-21 13:12:40,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 13:12:40,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2204 states and 3712 transitions. [2021-12-21 13:12:40,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-21 13:12:40,428 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:40,428 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:40,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 13:12:40,428 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:40,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:40,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1908613625, now seen corresponding path program 1 times [2021-12-21 13:12:40,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:40,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071088058] [2021-12-21 13:12:40,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:40,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:40,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:40,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:40,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:40,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:40,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:40,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:12:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:40,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-21 13:12:40,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:40,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 13:12:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:40,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 13:12:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:40,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 13:12:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:40,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-21 13:12:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:40,504 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:12:40,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:40,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071088058] [2021-12-21 13:12:40,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071088058] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:40,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:40,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:12:40,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316878633] [2021-12-21 13:12:40,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:40,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:12:40,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:40,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:12:40,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:12:40,506 INFO L87 Difference]: Start difference. First operand 2204 states and 3712 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 13:12:41,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:41,357 INFO L93 Difference]: Finished difference Result 5208 states and 8955 transitions. [2021-12-21 13:12:41,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:12:41,358 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2021-12-21 13:12:41,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:41,372 INFO L225 Difference]: With dead ends: 5208 [2021-12-21 13:12:41,372 INFO L226 Difference]: Without dead ends: 3489 [2021-12-21 13:12:41,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:12:41,378 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 955 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:41,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [970 Valid, 1211 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-21 13:12:41,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3489 states. [2021-12-21 13:12:41,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3489 to 3388. [2021-12-21 13:12:41,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3388 states, 2788 states have (on average 1.6101147776183644) internal successors, (4489), 2795 states have internal predecessors, (4489), 578 states have call successors, (578), 17 states have call predecessors, (578), 21 states have return successors, (651), 577 states have call predecessors, (651), 577 states have call successors, (651) [2021-12-21 13:12:41,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 5718 transitions. [2021-12-21 13:12:41,567 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 5718 transitions. Word has length 112 [2021-12-21 13:12:41,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:41,569 INFO L470 AbstractCegarLoop]: Abstraction has 3388 states and 5718 transitions. [2021-12-21 13:12:41,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 13:12:41,569 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 5718 transitions. [2021-12-21 13:12:41,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-21 13:12:41,576 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:41,576 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:41,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 13:12:41,576 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:41,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:41,577 INFO L85 PathProgramCache]: Analyzing trace with hash -593063639, now seen corresponding path program 1 times [2021-12-21 13:12:41,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:41,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276837426] [2021-12-21 13:12:41,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:41,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:41,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:41,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:41,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:41,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:41,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:41,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:12:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:41,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 13:12:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:41,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 13:12:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:41,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 13:12:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:41,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 13:12:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:41,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 13:12:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:41,665 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:12:41,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:41,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276837426] [2021-12-21 13:12:41,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276837426] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:41,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:41,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:12:41,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202780569] [2021-12-21 13:12:41,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:41,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:12:41,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:41,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:12:41,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:12:41,668 INFO L87 Difference]: Start difference. First operand 3388 states and 5718 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 13:12:42,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:42,634 INFO L93 Difference]: Finished difference Result 8281 states and 14271 transitions. [2021-12-21 13:12:42,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:12:42,635 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 113 [2021-12-21 13:12:42,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:42,660 INFO L225 Difference]: With dead ends: 8281 [2021-12-21 13:12:42,660 INFO L226 Difference]: Without dead ends: 5630 [2021-12-21 13:12:42,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:12:42,671 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 953 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:42,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [968 Valid, 1251 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-21 13:12:42,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5630 states. [2021-12-21 13:12:42,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5630 to 5529. [2021-12-21 13:12:42,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5529 states, 4553 states have (on average 1.6022402811333187) internal successors, (7295), 4560 states have internal predecessors, (7295), 954 states have call successors, (954), 17 states have call predecessors, (954), 21 states have return successors, (1071), 953 states have call predecessors, (1071), 953 states have call successors, (1071) [2021-12-21 13:12:42,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5529 states to 5529 states and 9320 transitions. [2021-12-21 13:12:42,968 INFO L78 Accepts]: Start accepts. Automaton has 5529 states and 9320 transitions. Word has length 113 [2021-12-21 13:12:42,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:42,969 INFO L470 AbstractCegarLoop]: Abstraction has 5529 states and 9320 transitions. [2021-12-21 13:12:42,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 13:12:42,969 INFO L276 IsEmpty]: Start isEmpty. Operand 5529 states and 9320 transitions. [2021-12-21 13:12:42,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-21 13:12:42,977 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:42,978 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:42,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 13:12:42,978 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:42,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:42,978 INFO L85 PathProgramCache]: Analyzing trace with hash -38691747, now seen corresponding path program 1 times [2021-12-21 13:12:42,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:42,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803842803] [2021-12-21 13:12:42,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:42,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:43,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:43,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:43,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:43,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:43,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:43,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:12:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:43,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 13:12:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:43,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 13:12:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:43,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 13:12:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:43,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 13:12:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:43,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 13:12:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:12:43,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:43,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803842803] [2021-12-21 13:12:43,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803842803] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:43,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:43,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:12:43,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450072230] [2021-12-21 13:12:43,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:43,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:12:43,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:43,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:12:43,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:12:43,096 INFO L87 Difference]: Start difference. First operand 5529 states and 9320 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 13:12:44,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:44,240 INFO L93 Difference]: Finished difference Result 13703 states and 23572 transitions. [2021-12-21 13:12:44,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:12:44,241 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 114 [2021-12-21 13:12:44,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:44,281 INFO L225 Difference]: With dead ends: 13703 [2021-12-21 13:12:44,281 INFO L226 Difference]: Without dead ends: 9313 [2021-12-21 13:12:44,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:12:44,293 INFO L933 BasicCegarLoop]: 507 mSDtfsCounter, 951 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:44,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [966 Valid, 1237 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-21 13:12:44,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9313 states. [2021-12-21 13:12:44,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9313 to 9212. [2021-12-21 13:12:44,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9212 states, 7630 states have (on average 1.599213630406291) internal successors, (12202), 7637 states have internal predecessors, (12202), 1560 states have call successors, (1560), 17 states have call predecessors, (1560), 21 states have return successors, (1755), 1559 states have call predecessors, (1755), 1559 states have call successors, (1755) [2021-12-21 13:12:44,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9212 states to 9212 states and 15517 transitions. [2021-12-21 13:12:44,784 INFO L78 Accepts]: Start accepts. Automaton has 9212 states and 15517 transitions. Word has length 114 [2021-12-21 13:12:44,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:44,784 INFO L470 AbstractCegarLoop]: Abstraction has 9212 states and 15517 transitions. [2021-12-21 13:12:44,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 13:12:44,785 INFO L276 IsEmpty]: Start isEmpty. Operand 9212 states and 15517 transitions. [2021-12-21 13:12:44,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-21 13:12:44,796 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:44,796 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:44,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 13:12:44,796 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:44,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:44,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1889380491, now seen corresponding path program 1 times [2021-12-21 13:12:44,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:44,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117358707] [2021-12-21 13:12:44,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:44,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:44,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:44,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:44,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:44,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:44,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:44,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:12:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:44,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 13:12:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:44,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:12:44,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:44,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 13:12:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:44,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 13:12:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:44,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 13:12:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:44,872 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:12:44,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:44,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117358707] [2021-12-21 13:12:44,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117358707] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:44,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:44,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:12:44,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037026881] [2021-12-21 13:12:44,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:44,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:12:44,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:44,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:12:44,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:12:44,874 INFO L87 Difference]: Start difference. First operand 9212 states and 15517 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 13:12:46,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:46,223 INFO L93 Difference]: Finished difference Result 23887 states and 41013 transitions. [2021-12-21 13:12:46,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:12:46,223 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 115 [2021-12-21 13:12:46,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:46,270 INFO L225 Difference]: With dead ends: 23887 [2021-12-21 13:12:46,270 INFO L226 Difference]: Without dead ends: 16266 [2021-12-21 13:12:46,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:12:46,291 INFO L933 BasicCegarLoop]: 513 mSDtfsCounter, 949 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:46,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [964 Valid, 1261 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-21 13:12:46,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16266 states. [2021-12-21 13:12:47,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16266 to 16165. [2021-12-21 13:12:47,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16165 states, 13380 states have (on average 1.5898355754857998) internal successors, (21272), 13387 states have internal predecessors, (21272), 2763 states have call successors, (2763), 17 states have call predecessors, (2763), 21 states have return successors, (3102), 2762 states have call predecessors, (3102), 2762 states have call successors, (3102) [2021-12-21 13:12:47,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16165 states to 16165 states and 27137 transitions. [2021-12-21 13:12:47,120 INFO L78 Accepts]: Start accepts. Automaton has 16165 states and 27137 transitions. Word has length 115 [2021-12-21 13:12:47,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:47,120 INFO L470 AbstractCegarLoop]: Abstraction has 16165 states and 27137 transitions. [2021-12-21 13:12:47,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 13:12:47,120 INFO L276 IsEmpty]: Start isEmpty. Operand 16165 states and 27137 transitions. [2021-12-21 13:12:47,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-21 13:12:47,134 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:47,134 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:47,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-21 13:12:47,134 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:47,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:47,135 INFO L85 PathProgramCache]: Analyzing trace with hash -550230466, now seen corresponding path program 1 times [2021-12-21 13:12:47,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:47,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858798778] [2021-12-21 13:12:47,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:47,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:47,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:47,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:47,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:47,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:47,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:47,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:12:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:47,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 13:12:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:47,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 13:12:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:47,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 13:12:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:47,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 13:12:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:47,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 13:12:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:47,207 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:12:47,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:47,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858798778] [2021-12-21 13:12:47,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858798778] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:47,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:47,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:12:47,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270106025] [2021-12-21 13:12:47,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:47,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:12:47,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:47,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:12:47,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:12:47,210 INFO L87 Difference]: Start difference. First operand 16165 states and 27137 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 13:12:49,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:49,229 INFO L93 Difference]: Finished difference Result 42853 states and 73410 transitions. [2021-12-21 13:12:49,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:12:49,230 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 116 [2021-12-21 13:12:49,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:49,327 INFO L225 Difference]: With dead ends: 42853 [2021-12-21 13:12:49,327 INFO L226 Difference]: Without dead ends: 28921 [2021-12-21 13:12:49,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:12:49,362 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 947 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:49,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [962 Valid, 1210 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 13:12:49,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28921 states. [2021-12-21 13:12:50,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28921 to 28820. [2021-12-21 13:12:50,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28820 states, 23996 states have (on average 1.585222537089515) internal successors, (38039), 24003 states have internal predecessors, (38039), 4802 states have call successors, (4802), 17 states have call predecessors, (4802), 21 states have return successors, (5415), 4801 states have call predecessors, (5415), 4801 states have call successors, (5415) [2021-12-21 13:12:50,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28820 states to 28820 states and 48256 transitions. [2021-12-21 13:12:50,997 INFO L78 Accepts]: Start accepts. Automaton has 28820 states and 48256 transitions. Word has length 116 [2021-12-21 13:12:50,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:50,998 INFO L470 AbstractCegarLoop]: Abstraction has 28820 states and 48256 transitions. [2021-12-21 13:12:50,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 13:12:50,999 INFO L276 IsEmpty]: Start isEmpty. Operand 28820 states and 48256 transitions. [2021-12-21 13:12:51,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-21 13:12:51,022 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:51,022 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:51,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-21 13:12:51,023 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:51,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:51,023 INFO L85 PathProgramCache]: Analyzing trace with hash 538828877, now seen corresponding path program 1 times [2021-12-21 13:12:51,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:51,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839329725] [2021-12-21 13:12:51,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:51,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:51,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:51,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:51,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:51,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:51,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:51,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:12:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:51,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 13:12:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:51,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 13:12:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:51,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 13:12:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:51,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 13:12:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:51,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 13:12:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:51,108 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:12:51,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:51,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839329725] [2021-12-21 13:12:51,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839329725] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:51,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:51,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:12:51,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308345780] [2021-12-21 13:12:51,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:51,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:12:51,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:51,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:12:51,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:12:51,110 INFO L87 Difference]: Start difference. First operand 28820 states and 48256 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 13:12:53,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:53,991 INFO L93 Difference]: Finished difference Result 78615 states and 133774 transitions. [2021-12-21 13:12:53,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:12:53,992 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 117 [2021-12-21 13:12:53,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:54,189 INFO L225 Difference]: With dead ends: 78615 [2021-12-21 13:12:54,189 INFO L226 Difference]: Without dead ends: 52800 [2021-12-21 13:12:54,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:12:54,270 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 945 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:54,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [960 Valid, 1210 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-21 13:12:54,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52800 states. [2021-12-21 13:12:57,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52800 to 52699. [2021-12-21 13:12:57,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52699 states, 44160 states have (on average 1.579302536231884) internal successors, (69742), 44167 states have internal predecessors, (69742), 8517 states have call successors, (8517), 17 states have call predecessors, (8517), 21 states have return successors, (9662), 8516 states have call predecessors, (9662), 8516 states have call successors, (9662) [2021-12-21 13:12:57,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52699 states to 52699 states and 87921 transitions. [2021-12-21 13:12:57,288 INFO L78 Accepts]: Start accepts. Automaton has 52699 states and 87921 transitions. Word has length 117 [2021-12-21 13:12:57,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:57,288 INFO L470 AbstractCegarLoop]: Abstraction has 52699 states and 87921 transitions. [2021-12-21 13:12:57,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 13:12:57,288 INFO L276 IsEmpty]: Start isEmpty. Operand 52699 states and 87921 transitions. [2021-12-21 13:12:57,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-21 13:12:57,308 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:57,308 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:57,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-21 13:12:57,308 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:57,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:57,308 INFO L85 PathProgramCache]: Analyzing trace with hash 736585342, now seen corresponding path program 1 times [2021-12-21 13:12:57,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:57,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686082423] [2021-12-21 13:12:57,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:57,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:57,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:57,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:57,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:57,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:57,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:57,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:12:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:57,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 13:12:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:57,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 13:12:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:57,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 13:12:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:57,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 13:12:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:57,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 13:12:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:57,377 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:12:57,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:57,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686082423] [2021-12-21 13:12:57,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686082423] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:57,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:57,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:12:57,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170656174] [2021-12-21 13:12:57,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:57,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:12:57,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:57,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:12:57,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:12:57,379 INFO L87 Difference]: Start difference. First operand 52699 states and 87921 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 13:13:01,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:13:01,922 INFO L93 Difference]: Finished difference Result 98386 states and 167704 transitions. [2021-12-21 13:13:01,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:13:01,923 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 118 [2021-12-21 13:13:01,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:13:02,229 INFO L225 Difference]: With dead ends: 98386 [2021-12-21 13:13:02,230 INFO L226 Difference]: Without dead ends: 98259 [2021-12-21 13:13:02,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:13:02,276 INFO L933 BasicCegarLoop]: 503 mSDtfsCounter, 943 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 13:13:02,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [958 Valid, 1216 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-21 13:13:02,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98259 states. [2021-12-21 13:13:07,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98259 to 98158. [2021-12-21 13:13:07,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98158 states, 82820 states have (on average 1.5719512195121952) internal successors, (130189), 82827 states have internal predecessors, (130189), 15316 states have call successors, (15316), 17 states have call predecessors, (15316), 21 states have return successors, (17507), 15315 states have call predecessors, (17507), 15315 states have call successors, (17507) [2021-12-21 13:13:07,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98158 states to 98158 states and 163012 transitions. [2021-12-21 13:13:07,692 INFO L78 Accepts]: Start accepts. Automaton has 98158 states and 163012 transitions. Word has length 118 [2021-12-21 13:13:07,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:13:07,693 INFO L470 AbstractCegarLoop]: Abstraction has 98158 states and 163012 transitions. [2021-12-21 13:13:07,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 13:13:07,693 INFO L276 IsEmpty]: Start isEmpty. Operand 98158 states and 163012 transitions. [2021-12-21 13:13:07,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-21 13:13:07,709 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:13:07,709 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:13:07,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-21 13:13:07,710 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:13:07,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:13:07,710 INFO L85 PathProgramCache]: Analyzing trace with hash 519306732, now seen corresponding path program 1 times [2021-12-21 13:13:07,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:13:07,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756765478] [2021-12-21 13:13:07,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:13:07,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:13:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:13:07,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:13:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:13:07,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:13:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:13:07,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:13:07,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:13:07,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:13:07,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:13:07,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:13:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:13:07,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:13:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:13:07,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 13:13:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:13:07,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 13:13:07,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:13:07,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 13:13:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:13:07,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-21 13:13:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:13:07,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 13:13:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:13:07,859 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:13:07,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:13:07,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756765478] [2021-12-21 13:13:07,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756765478] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:13:07,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:13:07,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-21 13:13:07,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640112395] [2021-12-21 13:13:07,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:13:07,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-21 13:13:07,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:13:07,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-21 13:13:07,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-12-21 13:13:07,861 INFO L87 Difference]: Start difference. First operand 98158 states and 163012 transitions. Second operand has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2021-12-21 13:13:20,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:13:20,127 INFO L93 Difference]: Finished difference Result 196237 states and 337801 transitions. [2021-12-21 13:13:20,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-12-21 13:13:20,128 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 119 [2021-12-21 13:13:20,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:13:21,219 INFO L225 Difference]: With dead ends: 196237 [2021-12-21 13:13:21,220 INFO L226 Difference]: Without dead ends: 196116 [2021-12-21 13:13:21,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1273 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=822, Invalid=3600, Unknown=0, NotChecked=0, Total=4422 [2021-12-21 13:13:21,313 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 4362 mSDsluCounter, 2723 mSDsCounter, 0 mSdLazyCounter, 6516 mSolverCounterSat, 1851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4362 SdHoareTripleChecker+Valid, 3307 SdHoareTripleChecker+Invalid, 8367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1851 IncrementalHoareTripleChecker+Valid, 6516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-21 13:13:21,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4362 Valid, 3307 Invalid, 8367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1851 Valid, 6516 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-21 13:13:21,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196116 states.