./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec11_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec11_product24.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 51fa488e776e831bac86701b44da2398387b953b2cee791cda39a1547c039fcd --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 14:52:09,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 14:52:09,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 14:52:09,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 14:52:09,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 14:52:09,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 14:52:09,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 14:52:09,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 14:52:09,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 14:52:09,269 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 14:52:09,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 14:52:09,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 14:52:09,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 14:52:09,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 14:52:09,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 14:52:09,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 14:52:09,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 14:52:09,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 14:52:09,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 14:52:09,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 14:52:09,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 14:52:09,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 14:52:09,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 14:52:09,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 14:52:09,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 14:52:09,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 14:52:09,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 14:52:09,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 14:52:09,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 14:52:09,294 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 14:52:09,294 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 14:52:09,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 14:52:09,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 14:52:09,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 14:52:09,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 14:52:09,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 14:52:09,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 14:52:09,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 14:52:09,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 14:52:09,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 14:52:09,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 14:52:09,301 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 14:52:09,326 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 14:52:09,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 14:52:09,327 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 14:52:09,327 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 14:52:09,328 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 14:52:09,328 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 14:52:09,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 14:52:09,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 14:52:09,328 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 14:52:09,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 14:52:09,329 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 14:52:09,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 14:52:09,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 14:52:09,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 14:52:09,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 14:52:09,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 14:52:09,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 14:52:09,330 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 14:52:09,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 14:52:09,330 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 14:52:09,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 14:52:09,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 14:52:09,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 14:52:09,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 14:52:09,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 14:52:09,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 14:52:09,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 14:52:09,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 14:52:09,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 14:52:09,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 14:52:09,333 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 14:52:09,333 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 14:52:09,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 14:52:09,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 14:52:09,333 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51fa488e776e831bac86701b44da2398387b953b2cee791cda39a1547c039fcd [2021-12-17 14:52:09,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 14:52:09,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 14:52:09,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 14:52:09,515 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 14:52:09,515 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 14:52:09,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec11_product24.cil.c [2021-12-17 14:52:09,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/658fa07f1/1c07ea67d2e243ef9c54f0ab11530fdc/FLAG0a1ec7a75 [2021-12-17 14:52:09,939 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 14:52:09,939 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec11_product24.cil.c [2021-12-17 14:52:09,954 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/658fa07f1/1c07ea67d2e243ef9c54f0ab11530fdc/FLAG0a1ec7a75 [2021-12-17 14:52:10,293 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/658fa07f1/1c07ea67d2e243ef9c54f0ab11530fdc [2021-12-17 14:52:10,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 14:52:10,296 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 14:52:10,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 14:52:10,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 14:52:10,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 14:52:10,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 02:52:10" (1/1) ... [2021-12-17 14:52:10,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f30f823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:52:10, skipping insertion in model container [2021-12-17 14:52:10,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 02:52:10" (1/1) ... [2021-12-17 14:52:10,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 14:52:10,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 14:52:10,656 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_spec11_product24.cil.c[16887,16900] [2021-12-17 14:52:10,742 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 14:52:10,755 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 14:52:10,784 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_spec11_product24.cil.c[16887,16900] [2021-12-17 14:52:10,823 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 14:52:10,862 INFO L208 MainTranslator]: Completed translation [2021-12-17 14:52:10,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:52:10 WrapperNode [2021-12-17 14:52:10,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 14:52:10,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 14:52:10,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 14:52:10,864 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 14:52:10,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:52:10" (1/1) ... [2021-12-17 14:52:10,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:52:10" (1/1) ... [2021-12-17 14:52:10,940 INFO L137 Inliner]: procedures = 130, calls = 208, calls flagged for inlining = 64, calls inlined = 59, statements flattened = 1049 [2021-12-17 14:52:10,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 14:52:10,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 14:52:10,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 14:52:10,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 14:52:10,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:52:10" (1/1) ... [2021-12-17 14:52:10,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:52:10" (1/1) ... [2021-12-17 14:52:10,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:52:10" (1/1) ... [2021-12-17 14:52:10,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:52:10" (1/1) ... [2021-12-17 14:52:10,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:52:10" (1/1) ... [2021-12-17 14:52:10,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:52:10" (1/1) ... [2021-12-17 14:52:10,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:52:10" (1/1) ... [2021-12-17 14:52:10,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 14:52:10,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 14:52:10,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 14:52:10,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 14:52:10,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:52:10" (1/1) ... [2021-12-17 14:52:10,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 14:52:11,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:52:11,057 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) [2021-12-17 14:52:11,112 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 [2021-12-17 14:52:11,136 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-17 14:52:11,137 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-17 14:52:11,137 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-17 14:52:11,137 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-17 14:52:11,137 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-17 14:52:11,137 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-17 14:52:11,137 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-17 14:52:11,137 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-17 14:52:11,138 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-17 14:52:11,138 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-17 14:52:11,138 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-17 14:52:11,138 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-17 14:52:11,138 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-17 14:52:11,139 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-17 14:52:11,139 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-17 14:52:11,139 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-12-17 14:52:11,139 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-12-17 14:52:11,139 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-17 14:52:11,139 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-17 14:52:11,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 14:52:11,139 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-17 14:52:11,140 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-17 14:52:11,140 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-17 14:52:11,140 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-17 14:52:11,140 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-17 14:52:11,140 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-17 14:52:11,140 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-17 14:52:11,140 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-17 14:52:11,140 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-17 14:52:11,141 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-17 14:52:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-17 14:52:11,141 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-17 14:52:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-17 14:52:11,141 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-17 14:52:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 14:52:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-17 14:52:11,142 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-17 14:52:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 14:52:11,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 14:52:11,319 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 14:52:11,321 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 14:52:11,852 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 14:52:11,859 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 14:52:11,863 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 14:52:11,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 02:52:11 BoogieIcfgContainer [2021-12-17 14:52:11,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 14:52:11,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 14:52:11,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 14:52:11,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 14:52:11,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 02:52:10" (1/3) ... [2021-12-17 14:52:11,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b47824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 02:52:11, skipping insertion in model container [2021-12-17 14:52:11,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:52:10" (2/3) ... [2021-12-17 14:52:11,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b47824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 02:52:11, skipping insertion in model container [2021-12-17 14:52:11,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 02:52:11" (3/3) ... [2021-12-17 14:52:11,874 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product24.cil.c [2021-12-17 14:52:11,877 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 14:52:11,878 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 14:52:11,911 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 14:52:11,916 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 [2021-12-17 14:52:11,916 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 14:52:11,946 INFO L276 IsEmpty]: Start isEmpty. Operand has 320 states, 255 states have (on average 1.5333333333333334) internal successors, (391), 257 states have internal predecessors, (391), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-12-17 14:52:11,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 14:52:11,968 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:52:11,969 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-12-17 14:52:11,969 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:52:11,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:52:11,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1690099201, now seen corresponding path program 1 times [2021-12-17 14:52:11,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:52:11,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114841548] [2021-12-17 14:52:11,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:52:11,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:52:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:12,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:52:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:12,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:52:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:12,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:52:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:12,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 14:52:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:12,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 14:52:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:12,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:52:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:12,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 14:52:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:12,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-17 14:52:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:12,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 14:52:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:12,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-17 14:52:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:12,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-17 14:52:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:12,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-17 14:52:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:12,436 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-17 14:52:12,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:52:12,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114841548] [2021-12-17 14:52:12,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114841548] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:52:12,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077970757] [2021-12-17 14:52:12,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:52:12,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:52:12,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:52:12,455 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) [2021-12-17 14:52:12,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 14:52:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:12,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 1055 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-17 14:52:12,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:52:12,908 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-17 14:52:12,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:52:12,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077970757] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:52:12,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:52:12,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-17 14:52:12,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975088948] [2021-12-17 14:52:12,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:52:12,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 14:52:12,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:52:12,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 14:52:12,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:52:12,945 INFO L87 Difference]: Start difference. First operand has 320 states, 255 states have (on average 1.5333333333333334) internal successors, (391), 257 states have internal predecessors, (391), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:52:12,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:52:12,996 INFO L93 Difference]: Finished difference Result 481 states and 712 transitions. [2021-12-17 14:52:12,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 14:52:12,998 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2021-12-17 14:52:12,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:52:13,006 INFO L225 Difference]: With dead ends: 481 [2021-12-17 14:52:13,007 INFO L226 Difference]: Without dead ends: 313 [2021-12-17 14:52:13,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:52:13,012 INFO L933 BasicCegarLoop]: 479 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, 479 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 [2021-12-17 14:52:13,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:52:13,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-12-17 14:52:13,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2021-12-17 14:52:13,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 249 states have (on average 1.5261044176706828) internal successors, (380), 250 states have internal predecessors, (380), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-12-17 14:52:13,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 471 transitions. [2021-12-17 14:52:13,055 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 471 transitions. Word has length 98 [2021-12-17 14:52:13,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:52:13,057 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 471 transitions. [2021-12-17 14:52:13,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:52:13,057 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 471 transitions. [2021-12-17 14:52:13,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-17 14:52:13,061 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:52:13,061 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-12-17 14:52:13,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 14:52:13,267 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 [2021-12-17 14:52:13,268 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:52:13,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:52:13,269 INFO L85 PathProgramCache]: Analyzing trace with hash 2990504, now seen corresponding path program 1 times [2021-12-17 14:52:13,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:52:13,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127249961] [2021-12-17 14:52:13,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:52:13,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:52:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:13,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:52:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:13,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:52:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:13,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:52:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:13,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 14:52:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:13,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 14:52:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:13,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:52:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:13,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-17 14:52:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:13,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:52:13,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:13,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-17 14:52:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:13,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 14:52:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:13,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-17 14:52:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:13,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 14:52:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:13,417 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-17 14:52:13,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:52:13,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127249961] [2021-12-17 14:52:13,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127249961] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:52:13,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925938595] [2021-12-17 14:52:13,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:52:13,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:52:13,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:52:13,419 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) [2021-12-17 14:52:13,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 14:52:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:13,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 14:52:13,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:52:13,831 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-17 14:52:13,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:52:13,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925938595] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:52:13,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:52:13,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-17 14:52:13,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905115618] [2021-12-17 14:52:13,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:52:13,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 14:52:13,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:52:13,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 14:52:13,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:52:13,833 INFO L87 Difference]: Start difference. First operand 313 states and 471 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:52:13,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:52:13,868 INFO L93 Difference]: Finished difference Result 471 states and 693 transitions. [2021-12-17 14:52:13,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 14:52:13,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 99 [2021-12-17 14:52:13,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:52:13,871 INFO L225 Difference]: With dead ends: 471 [2021-12-17 14:52:13,872 INFO L226 Difference]: Without dead ends: 316 [2021-12-17 14:52:13,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:52:13,875 INFO L933 BasicCegarLoop]: 469 mSDtfsCounter, 1 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 936 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 [2021-12-17 14:52:13,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 936 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:52:13,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-12-17 14:52:13,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2021-12-17 14:52:13,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 251 states have (on average 1.5219123505976095) internal successors, (382), 252 states have internal predecessors, (382), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-12-17 14:52:13,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 473 transitions. [2021-12-17 14:52:13,904 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 473 transitions. Word has length 99 [2021-12-17 14:52:13,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:52:13,905 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 473 transitions. [2021-12-17 14:52:13,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:52:13,905 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 473 transitions. [2021-12-17 14:52:13,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-17 14:52:13,907 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:52:13,907 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-17 14:52:13,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 14:52:14,126 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 [2021-12-17 14:52:14,126 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:52:14,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:52:14,127 INFO L85 PathProgramCache]: Analyzing trace with hash -223135106, now seen corresponding path program 1 times [2021-12-17 14:52:14,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:52:14,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177408862] [2021-12-17 14:52:14,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:52:14,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:52:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:14,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:52:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:14,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:52:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:14,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:52:14,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:14,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 14:52:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:14,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 14:52:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:14,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:52:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:14,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-17 14:52:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:14,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-17 14:52:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:14,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-17 14:52:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:14,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 14:52:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:14,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-17 14:52:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:14,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-17 14:52:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:14,274 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-17 14:52:14,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:52:14,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177408862] [2021-12-17 14:52:14,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177408862] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:52:14,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432184973] [2021-12-17 14:52:14,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:52:14,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:52:14,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:52:14,278 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) [2021-12-17 14:52:14,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 14:52:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:14,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 14:52:14,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:52:14,643 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-17 14:52:14,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:52:14,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432184973] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:52:14,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:52:14,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-17 14:52:14,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388484925] [2021-12-17 14:52:14,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:52:14,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 14:52:14,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:52:14,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 14:52:14,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:52:14,646 INFO L87 Difference]: Start difference. First operand 315 states and 473 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:52:14,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:52:14,666 INFO L93 Difference]: Finished difference Result 665 states and 1013 transitions. [2021-12-17 14:52:14,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 14:52:14,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2021-12-17 14:52:14,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:52:14,670 INFO L225 Difference]: With dead ends: 665 [2021-12-17 14:52:14,670 INFO L226 Difference]: Without dead ends: 377 [2021-12-17 14:52:14,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:52:14,673 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 115 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 907 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 [2021-12-17 14:52:14,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 907 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:52:14,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-12-17 14:52:14,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 369. [2021-12-17 14:52:14,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 294 states have (on average 1.5374149659863945) internal successors, (452), 295 states have internal predecessors, (452), 57 states have call successors, (57), 17 states have call predecessors, (57), 17 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2021-12-17 14:52:14,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 565 transitions. [2021-12-17 14:52:14,707 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 565 transitions. Word has length 108 [2021-12-17 14:52:14,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:52:14,708 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 565 transitions. [2021-12-17 14:52:14,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:52:14,709 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 565 transitions. [2021-12-17 14:52:14,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-17 14:52:14,711 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:52:14,712 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:52:14,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-17 14:52:14,927 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 [2021-12-17 14:52:14,927 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:52:14,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:52:14,928 INFO L85 PathProgramCache]: Analyzing trace with hash -2129020549, now seen corresponding path program 1 times [2021-12-17 14:52:14,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:52:14,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477793271] [2021-12-17 14:52:14,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:52:14,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:52:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:15,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:52:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:15,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:52:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:15,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:52:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:15,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 14:52:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:15,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 14:52:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:15,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:52:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:15,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-17 14:52:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:15,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-17 14:52:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:15,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 14:52:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:15,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-17 14:52:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:15,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-17 14:52:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:15,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-17 14:52:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:15,116 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-17 14:52:15,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:52:15,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477793271] [2021-12-17 14:52:15,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477793271] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:52:15,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641645693] [2021-12-17 14:52:15,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:52:15,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:52:15,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:52:15,133 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) [2021-12-17 14:52:15,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 14:52:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:15,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 14:52:15,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:52:15,517 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-17 14:52:15,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:52:15,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641645693] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:52:15,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:52:15,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-17 14:52:15,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142106478] [2021-12-17 14:52:15,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:52:15,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 14:52:15,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:52:15,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 14:52:15,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:52:15,520 INFO L87 Difference]: Start difference. First operand 369 states and 565 transitions. Second operand has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 14:52:15,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:52:15,573 INFO L93 Difference]: Finished difference Result 729 states and 1120 transitions. [2021-12-17 14:52:15,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 14:52:15,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 109 [2021-12-17 14:52:15,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:52:15,577 INFO L225 Difference]: With dead ends: 729 [2021-12-17 14:52:15,577 INFO L226 Difference]: Without dead ends: 371 [2021-12-17 14:52:15,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:52:15,579 INFO L933 BasicCegarLoop]: 462 mSDtfsCounter, 133 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1696 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 [2021-12-17 14:52:15,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 1696 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:52:15,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-12-17 14:52:15,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2021-12-17 14:52:15,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 295 states have (on average 1.535593220338983) internal successors, (453), 297 states have internal predecessors, (453), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 56 states have call predecessors, (58), 56 states have call successors, (58) [2021-12-17 14:52:15,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 568 transitions. [2021-12-17 14:52:15,594 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 568 transitions. Word has length 109 [2021-12-17 14:52:15,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:52:15,594 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 568 transitions. [2021-12-17 14:52:15,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 14:52:15,594 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 568 transitions. [2021-12-17 14:52:15,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-17 14:52:15,596 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:52:15,596 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:52:15,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 14:52:15,815 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 [2021-12-17 14:52:15,815 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:52:15,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:52:15,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1018902216, now seen corresponding path program 1 times [2021-12-17 14:52:15,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:52:15,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869925770] [2021-12-17 14:52:15,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:52:15,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:52:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:15,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:52:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:15,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:52:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:15,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:52:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:15,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:52:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:15,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 14:52:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:15,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 14:52:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:15,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-17 14:52:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:15,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-17 14:52:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:15,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-17 14:52:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:15,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 14:52:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:15,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-17 14:52:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:15,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-17 14:52:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:15,950 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-17 14:52:15,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:52:15,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869925770] [2021-12-17 14:52:15,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869925770] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:52:15,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082647970] [2021-12-17 14:52:15,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:52:15,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:52:15,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:52:15,960 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) [2021-12-17 14:52:16,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-17 14:52:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:16,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-17 14:52:16,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:52:16,370 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-17 14:52:16,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:52:16,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082647970] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:52:16,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:52:16,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-17 14:52:16,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192742534] [2021-12-17 14:52:16,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:52:16,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 14:52:16,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:52:16,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 14:52:16,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-17 14:52:16,372 INFO L87 Difference]: Start difference. First operand 371 states and 568 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 14:52:16,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:52:16,431 INFO L93 Difference]: Finished difference Result 731 states and 1125 transitions. [2021-12-17 14:52:16,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 14:52:16,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 110 [2021-12-17 14:52:16,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:52:16,434 INFO L225 Difference]: With dead ends: 731 [2021-12-17 14:52:16,434 INFO L226 Difference]: Without dead ends: 373 [2021-12-17 14:52:16,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-17 14:52:16,436 INFO L933 BasicCegarLoop]: 460 mSDtfsCounter, 132 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1685 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 [2021-12-17 14:52:16,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 1685 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:52:16,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-12-17 14:52:16,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2021-12-17 14:52:16,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 296 states have (on average 1.5337837837837838) internal successors, (454), 299 states have internal predecessors, (454), 57 states have call successors, (57), 17 states have call predecessors, (57), 19 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2021-12-17 14:52:16,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 574 transitions. [2021-12-17 14:52:16,449 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 574 transitions. Word has length 110 [2021-12-17 14:52:16,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:52:16,449 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 574 transitions. [2021-12-17 14:52:16,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 14:52:16,449 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 574 transitions. [2021-12-17 14:52:16,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-17 14:52:16,451 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:52:16,451 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:52:16,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-17 14:52:16,671 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 [2021-12-17 14:52:16,671 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:52:16,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:52:16,672 INFO L85 PathProgramCache]: Analyzing trace with hash -884998255, now seen corresponding path program 1 times [2021-12-17 14:52:16,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:52:16,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262102514] [2021-12-17 14:52:16,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:52:16,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:52:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:16,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:52:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:16,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:52:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:16,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:52:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:16,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:52:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:16,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:52:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:16,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-17 14:52:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:16,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 14:52:16,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:16,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 14:52:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:16,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-17 14:52:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:16,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-17 14:52:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:16,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 14:52:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:16,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 14:52:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:16,756 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-17 14:52:16,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:52:16,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262102514] [2021-12-17 14:52:16,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262102514] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:52:16,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:52:16,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 14:52:16,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894403442] [2021-12-17 14:52:16,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:52:16,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 14:52:16,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:52:16,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 14:52:16,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:52:16,758 INFO L87 Difference]: Start difference. First operand 373 states and 574 transitions. Second operand has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 14:52:18,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:52:18,144 INFO L93 Difference]: Finished difference Result 908 states and 1409 transitions. [2021-12-17 14:52:18,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 14:52:18,145 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2021-12-17 14:52:18,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:52:18,148 INFO L225 Difference]: With dead ends: 908 [2021-12-17 14:52:18,148 INFO L226 Difference]: Without dead ends: 558 [2021-12-17 14:52:18,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 14:52:18,149 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 1184 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 2266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 1841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 14:52:18,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1201 Valid, 1666 Invalid, 2266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 1841 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 14:52:18,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-12-17 14:52:18,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 373. [2021-12-17 14:52:18,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 296 states have (on average 1.5337837837837838) internal successors, (454), 299 states have internal predecessors, (454), 57 states have call successors, (57), 17 states have call predecessors, (57), 19 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2021-12-17 14:52:18,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 573 transitions. [2021-12-17 14:52:18,168 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 573 transitions. Word has length 111 [2021-12-17 14:52:18,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:52:18,168 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 573 transitions. [2021-12-17 14:52:18,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 14:52:18,168 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 573 transitions. [2021-12-17 14:52:18,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-17 14:52:18,170 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:52:18,170 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:52:18,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 14:52:18,170 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:52:18,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:52:18,171 INFO L85 PathProgramCache]: Analyzing trace with hash -348871252, now seen corresponding path program 2 times [2021-12-17 14:52:18,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:52:18,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278992190] [2021-12-17 14:52:18,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:52:18,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:52:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:18,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:52:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:18,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:52:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:18,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:52:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:18,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:52:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:18,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:52:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:18,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:52:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:18,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:52:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:18,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-17 14:52:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:18,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-17 14:52:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:18,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 14:52:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:18,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-17 14:52:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:18,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 14:52:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:18,253 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-17 14:52:18,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:52:18,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278992190] [2021-12-17 14:52:18,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278992190] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:52:18,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:52:18,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 14:52:18,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114711064] [2021-12-17 14:52:18,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:52:18,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 14:52:18,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:52:18,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 14:52:18,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:52:18,255 INFO L87 Difference]: Start difference. First operand 373 states and 573 transitions. Second operand has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 14:52:19,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:52:19,484 INFO L93 Difference]: Finished difference Result 910 states and 1412 transitions. [2021-12-17 14:52:19,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 14:52:19,485 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 112 [2021-12-17 14:52:19,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:52:19,488 INFO L225 Difference]: With dead ends: 910 [2021-12-17 14:52:19,488 INFO L226 Difference]: Without dead ends: 560 [2021-12-17 14:52:19,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 14:52:19,490 INFO L933 BasicCegarLoop]: 604 mSDtfsCounter, 1159 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 1897 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 2301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 1897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 14:52:19,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1178 Valid, 1693 Invalid, 2301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 1897 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 14:52:19,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-12-17 14:52:19,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 375. [2021-12-17 14:52:19,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 297 states have (on average 1.531986531986532) internal successors, (455), 301 states have internal predecessors, (455), 57 states have call successors, (57), 17 states have call predecessors, (57), 20 states have return successors, (64), 56 states have call predecessors, (64), 56 states have call successors, (64) [2021-12-17 14:52:19,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 576 transitions. [2021-12-17 14:52:19,516 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 576 transitions. Word has length 112 [2021-12-17 14:52:19,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:52:19,516 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 576 transitions. [2021-12-17 14:52:19,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 14:52:19,517 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 576 transitions. [2021-12-17 14:52:19,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 14:52:19,518 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:52:19,518 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:52:19,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 14:52:19,519 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:52:19,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:52:19,519 INFO L85 PathProgramCache]: Analyzing trace with hash -814073736, now seen corresponding path program 1 times [2021-12-17 14:52:19,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:52:19,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646009649] [2021-12-17 14:52:19,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:52:19,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:52:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:19,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:52:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:19,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:52:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:19,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:52:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:19,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:52:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:19,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:52:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:19,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:52:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:19,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-17 14:52:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:19,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 14:52:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:19,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-17 14:52:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:19,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-17 14:52:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:19,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-17 14:52:19,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:19,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 14:52:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:19,680 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-17 14:52:19,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:52:19,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646009649] [2021-12-17 14:52:19,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646009649] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:52:19,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:52:19,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 14:52:19,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037626660] [2021-12-17 14:52:19,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:52:19,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 14:52:19,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:52:19,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 14:52:19,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:52:19,682 INFO L87 Difference]: Start difference. First operand 375 states and 576 transitions. Second operand has 9 states, 8 states have (on average 9.25) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 14:52:20,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:52:20,893 INFO L93 Difference]: Finished difference Result 910 states and 1411 transitions. [2021-12-17 14:52:20,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 14:52:20,894 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.25) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 113 [2021-12-17 14:52:20,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:52:20,896 INFO L225 Difference]: With dead ends: 910 [2021-12-17 14:52:20,896 INFO L226 Difference]: Without dead ends: 560 [2021-12-17 14:52:20,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-12-17 14:52:20,898 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 1165 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 1866 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 2289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 1866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:52:20,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1183 Valid, 1683 Invalid, 2289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [423 Valid, 1866 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 14:52:20,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-12-17 14:52:20,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 375. [2021-12-17 14:52:20,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 297 states have (on average 1.531986531986532) internal successors, (455), 301 states have internal predecessors, (455), 57 states have call successors, (57), 17 states have call predecessors, (57), 20 states have return successors, (64), 56 states have call predecessors, (64), 56 states have call successors, (64) [2021-12-17 14:52:20,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 576 transitions. [2021-12-17 14:52:20,942 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 576 transitions. Word has length 113 [2021-12-17 14:52:20,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:52:20,942 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 576 transitions. [2021-12-17 14:52:20,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.25) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 14:52:20,943 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 576 transitions. [2021-12-17 14:52:20,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 14:52:20,944 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:52:20,944 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:52:20,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 14:52:20,944 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:52:20,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:52:20,945 INFO L85 PathProgramCache]: Analyzing trace with hash -841139338, now seen corresponding path program 1 times [2021-12-17 14:52:20,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:52:20,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112321974] [2021-12-17 14:52:20,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:52:20,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:52:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:20,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:52:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:21,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:52:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:21,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:52:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:21,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:52:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:21,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:52:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:21,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:52:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:21,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-17 14:52:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:21,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 14:52:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:21,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-17 14:52:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:21,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-17 14:52:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:21,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-17 14:52:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:21,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 14:52:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:21,074 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-17 14:52:21,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:52:21,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112321974] [2021-12-17 14:52:21,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112321974] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:52:21,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:52:21,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 14:52:21,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033027562] [2021-12-17 14:52:21,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:52:21,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 14:52:21,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:52:21,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 14:52:21,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:52:21,076 INFO L87 Difference]: Start difference. First operand 375 states and 576 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-17 14:52:22,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:52:22,716 INFO L93 Difference]: Finished difference Result 908 states and 1406 transitions. [2021-12-17 14:52:22,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 14:52:22,716 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 113 [2021-12-17 14:52:22,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:52:22,719 INFO L225 Difference]: With dead ends: 908 [2021-12-17 14:52:22,719 INFO L226 Difference]: Without dead ends: 560 [2021-12-17 14:52:22,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-17 14:52:22,722 INFO L933 BasicCegarLoop]: 583 mSDtfsCounter, 1293 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 3315 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 2154 SdHoareTripleChecker+Invalid, 3792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 3315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 14:52:22,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1293 Valid, 2154 Invalid, 3792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 3315 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 14:52:22,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-12-17 14:52:22,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 375. [2021-12-17 14:52:22,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 297 states have (on average 1.531986531986532) internal successors, (455), 301 states have internal predecessors, (455), 57 states have call successors, (57), 17 states have call predecessors, (57), 20 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2021-12-17 14:52:22,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 575 transitions. [2021-12-17 14:52:22,740 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 575 transitions. Word has length 113 [2021-12-17 14:52:22,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:52:22,741 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 575 transitions. [2021-12-17 14:52:22,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-17 14:52:22,741 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 575 transitions. [2021-12-17 14:52:22,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-17 14:52:22,743 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:52:22,743 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:52:22,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 14:52:22,743 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:52:22,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:52:22,744 INFO L85 PathProgramCache]: Analyzing trace with hash 8663705, now seen corresponding path program 2 times [2021-12-17 14:52:22,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:52:22,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116095945] [2021-12-17 14:52:22,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:52:22,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:52:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:22,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:52:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:22,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:52:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:22,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:52:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:22,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:52:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:22,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:52:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:22,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:52:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:22,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-17 14:52:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:22,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-17 14:52:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:22,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 14:52:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:22,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-17 14:52:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:22,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 14:52:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:22,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-17 14:52:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:22,859 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-17 14:52:22,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:52:22,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116095945] [2021-12-17 14:52:22,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116095945] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:52:22,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:52:22,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 14:52:22,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95911396] [2021-12-17 14:52:22,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:52:22,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 14:52:22,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:52:22,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 14:52:22,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:52:22,861 INFO L87 Difference]: Start difference. First operand 375 states and 575 transitions. Second operand has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-17 14:52:24,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:52:24,599 INFO L93 Difference]: Finished difference Result 910 states and 1412 transitions. [2021-12-17 14:52:24,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 14:52:24,600 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 114 [2021-12-17 14:52:24,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:52:24,602 INFO L225 Difference]: With dead ends: 910 [2021-12-17 14:52:24,602 INFO L226 Difference]: Without dead ends: 562 [2021-12-17 14:52:24,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-17 14:52:24,604 INFO L933 BasicCegarLoop]: 593 mSDtfsCounter, 1273 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 3388 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 3846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 3388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 14:52:24,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1273 Valid, 2193 Invalid, 3846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 3388 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 14:52:24,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-12-17 14:52:24,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 377. [2021-12-17 14:52:24,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 298 states have (on average 1.5302013422818792) internal successors, (456), 303 states have internal predecessors, (456), 57 states have call successors, (57), 17 states have call predecessors, (57), 21 states have return successors, (68), 56 states have call predecessors, (68), 56 states have call successors, (68) [2021-12-17 14:52:24,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 581 transitions. [2021-12-17 14:52:24,625 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 581 transitions. Word has length 114 [2021-12-17 14:52:24,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:52:24,625 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 581 transitions. [2021-12-17 14:52:24,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-17 14:52:24,626 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 581 transitions. [2021-12-17 14:52:24,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 14:52:24,627 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:52:24,627 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:52:24,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 14:52:24,628 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:52:24,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:52:24,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1835622373, now seen corresponding path program 1 times [2021-12-17 14:52:24,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:52:24,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399397065] [2021-12-17 14:52:24,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:52:24,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:52:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:24,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:52:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:24,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:52:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:24,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:52:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:24,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:52:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:24,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:52:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:24,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:52:24,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:24,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-17 14:52:24,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:24,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-17 14:52:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:24,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-17 14:52:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:24,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-17 14:52:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:24,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 14:52:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:24,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-17 14:52:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:24,748 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-17 14:52:24,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:52:24,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399397065] [2021-12-17 14:52:24,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399397065] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:52:24,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800400457] [2021-12-17 14:52:24,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:52:24,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:52:24,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:52:24,764 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) [2021-12-17 14:52:24,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-17 14:52:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:25,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 14:52:25,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:52:25,196 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-17 14:52:25,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 14:52:25,379 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-17 14:52:25,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800400457] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 14:52:25,380 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 14:52:25,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-17 14:52:25,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690049411] [2021-12-17 14:52:25,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 14:52:25,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-17 14:52:25,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:52:25,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-17 14:52:25,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-17 14:52:25,381 INFO L87 Difference]: Start difference. First operand 377 states and 581 transitions. Second operand has 15 states, 14 states have (on average 8.857142857142858) internal successors, (124), 11 states have internal predecessors, (124), 4 states have call successors, (29), 6 states have call predecessors, (29), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-17 14:52:28,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:52:28,227 INFO L93 Difference]: Finished difference Result 1639 states and 2720 transitions. [2021-12-17 14:52:28,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 14:52:28,228 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 8.857142857142858) internal successors, (124), 11 states have internal predecessors, (124), 4 states have call successors, (29), 6 states have call predecessors, (29), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 115 [2021-12-17 14:52:28,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:52:28,234 INFO L225 Difference]: With dead ends: 1639 [2021-12-17 14:52:28,234 INFO L226 Difference]: Without dead ends: 1293 [2021-12-17 14:52:28,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-12-17 14:52:28,237 INFO L933 BasicCegarLoop]: 715 mSDtfsCounter, 3220 mSDsluCounter, 2906 mSDsCounter, 0 mSdLazyCounter, 5231 mSolverCounterSat, 1276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3222 SdHoareTripleChecker+Valid, 3621 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1276 IncrementalHoareTripleChecker+Valid, 5231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-17 14:52:28,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3222 Valid, 3621 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1276 Valid, 5231 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-17 14:52:28,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2021-12-17 14:52:28,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 730. [2021-12-17 14:52:28,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 587 states have (on average 1.5792163543441227) internal successors, (927), 592 states have internal predecessors, (927), 121 states have call successors, (121), 17 states have call predecessors, (121), 21 states have return successors, (142), 120 states have call predecessors, (142), 120 states have call successors, (142) [2021-12-17 14:52:28,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1190 transitions. [2021-12-17 14:52:28,296 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1190 transitions. Word has length 115 [2021-12-17 14:52:28,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:52:28,297 INFO L470 AbstractCegarLoop]: Abstraction has 730 states and 1190 transitions. [2021-12-17 14:52:28,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 8.857142857142858) internal successors, (124), 11 states have internal predecessors, (124), 4 states have call successors, (29), 6 states have call predecessors, (29), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-17 14:52:28,297 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1190 transitions. [2021-12-17 14:52:28,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-17 14:52:28,299 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:52:28,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:52:28,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-17 14:52:28,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:52:28,517 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:52:28,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:52:28,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1826023173, now seen corresponding path program 1 times [2021-12-17 14:52:28,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:52:28,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505909648] [2021-12-17 14:52:28,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:52:28,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:52:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:28,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:52:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:28,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:52:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:28,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:52:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:28,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:52:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:28,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:52:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:28,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:52:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:28,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 14:52:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:28,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-17 14:52:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:28,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 14:52:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:28,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-17 14:52:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:28,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-17 14:52:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:28,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-17 14:52:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:28,585 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-17 14:52:28,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:52:28,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505909648] [2021-12-17 14:52:28,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505909648] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:52:28,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:52:28,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:52:28,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798638298] [2021-12-17 14:52:28,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:52:28,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:52:28,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:52:28,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:52:28,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:52:28,587 INFO L87 Difference]: Start difference. First operand 730 states and 1190 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:52:29,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:52:29,507 INFO L93 Difference]: Finished difference Result 1900 states and 3163 transitions. [2021-12-17 14:52:29,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:52:29,508 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 118 [2021-12-17 14:52:29,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:52:29,513 INFO L225 Difference]: With dead ends: 1900 [2021-12-17 14:52:29,513 INFO L226 Difference]: Without dead ends: 1248 [2021-12-17 14:52:29,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:52:29,515 INFO L933 BasicCegarLoop]: 629 mSDtfsCounter, 1171 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 14:52:29,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1187 Valid, 1409 Invalid, 1465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 14:52:29,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-12-17 14:52:29,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1055. [2021-12-17 14:52:29,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 848 states have (on average 1.5943396226415094) internal successors, (1352), 853 states have internal predecessors, (1352), 185 states have call successors, (185), 17 states have call predecessors, (185), 21 states have return successors, (216), 184 states have call predecessors, (216), 184 states have call successors, (216) [2021-12-17 14:52:29,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1753 transitions. [2021-12-17 14:52:29,562 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1753 transitions. Word has length 118 [2021-12-17 14:52:29,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:52:29,562 INFO L470 AbstractCegarLoop]: Abstraction has 1055 states and 1753 transitions. [2021-12-17 14:52:29,563 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:52:29,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1753 transitions. [2021-12-17 14:52:29,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-17 14:52:29,566 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:52:29,566 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:52:29,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 14:52:29,566 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:52:29,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:52:29,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1063234977, now seen corresponding path program 1 times [2021-12-17 14:52:29,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:52:29,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503675835] [2021-12-17 14:52:29,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:52:29,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:52:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:29,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:52:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:29,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:52:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:29,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:52:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:29,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:52:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:29,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:52:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:29,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:52:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:29,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-17 14:52:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:29,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-17 14:52:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:29,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-17 14:52:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:29,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-17 14:52:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:29,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-17 14:52:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:29,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-17 14:52:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:29,660 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-17 14:52:29,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:52:29,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503675835] [2021-12-17 14:52:29,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503675835] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:52:29,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:52:29,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:52:29,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630165160] [2021-12-17 14:52:29,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:52:29,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:52:29,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:52:29,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:52:29,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:52:29,662 INFO L87 Difference]: Start difference. First operand 1055 states and 1753 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:52:30,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:52:30,470 INFO L93 Difference]: Finished difference Result 2705 states and 4547 transitions. [2021-12-17 14:52:30,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:52:30,470 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2021-12-17 14:52:30,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:52:30,496 INFO L225 Difference]: With dead ends: 2705 [2021-12-17 14:52:30,510 INFO L226 Difference]: Without dead ends: 1781 [2021-12-17 14:52:30,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:52:30,514 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 1142 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 14:52:30,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1158 Valid, 1408 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 14:52:30,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2021-12-17 14:52:30,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1588. [2021-12-17 14:52:30,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1588 states, 1286 states have (on average 1.6003110419906688) internal successors, (2058), 1291 states have internal predecessors, (2058), 280 states have call successors, (280), 17 states have call predecessors, (280), 21 states have return successors, (311), 279 states have call predecessors, (311), 279 states have call successors, (311) [2021-12-17 14:52:30,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2649 transitions. [2021-12-17 14:52:30,584 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2649 transitions. Word has length 119 [2021-12-17 14:52:30,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:52:30,584 INFO L470 AbstractCegarLoop]: Abstraction has 1588 states and 2649 transitions. [2021-12-17 14:52:30,584 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:52:30,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2649 transitions. [2021-12-17 14:52:30,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-17 14:52:30,590 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:52:30,591 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:52:30,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 14:52:30,591 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:52:30,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:52:30,591 INFO L85 PathProgramCache]: Analyzing trace with hash 15597751, now seen corresponding path program 1 times [2021-12-17 14:52:30,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:52:30,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762411413] [2021-12-17 14:52:30,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:52:30,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:52:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:30,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:52:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:30,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:52:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:30,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:52:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:30,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:52:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:30,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:52:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:30,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:52:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:30,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-17 14:52:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:30,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 14:52:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:30,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-17 14:52:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:30,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 14:52:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:30,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-17 14:52:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:30,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-17 14:52:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:30,683 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-17 14:52:30,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:52:30,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762411413] [2021-12-17 14:52:30,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762411413] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:52:30,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:52:30,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:52:30,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88322361] [2021-12-17 14:52:30,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:52:30,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:52:30,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:52:30,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:52:30,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:52:30,685 INFO L87 Difference]: Start difference. First operand 1588 states and 2649 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:52:31,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:52:31,744 INFO L93 Difference]: Finished difference Result 3912 states and 6633 transitions. [2021-12-17 14:52:31,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:52:31,745 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2021-12-17 14:52:31,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:52:31,758 INFO L225 Difference]: With dead ends: 3912 [2021-12-17 14:52:31,758 INFO L226 Difference]: Without dead ends: 2590 [2021-12-17 14:52:31,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:52:31,762 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 1149 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1165 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 14:52:31,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1165 Valid, 1391 Invalid, 1463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 14:52:31,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2021-12-17 14:52:31,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 2397. [2021-12-17 14:52:31,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2397 states, 1972 states have (on average 1.604969574036511) internal successors, (3165), 1977 states have internal predecessors, (3165), 403 states have call successors, (403), 17 states have call predecessors, (403), 21 states have return successors, (450), 402 states have call predecessors, (450), 402 states have call successors, (450) [2021-12-17 14:52:31,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 4018 transitions. [2021-12-17 14:52:31,856 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 4018 transitions. Word has length 120 [2021-12-17 14:52:31,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:52:31,856 INFO L470 AbstractCegarLoop]: Abstraction has 2397 states and 4018 transitions. [2021-12-17 14:52:31,856 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:52:31,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 4018 transitions. [2021-12-17 14:52:31,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-17 14:52:31,862 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:52:31,862 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:52:31,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 14:52:31,863 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:52:31,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:52:31,863 INFO L85 PathProgramCache]: Analyzing trace with hash 615683806, now seen corresponding path program 1 times [2021-12-17 14:52:31,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:52:31,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051732243] [2021-12-17 14:52:31,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:52:31,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:52:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:31,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:52:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:31,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:52:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:31,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:52:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:31,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:52:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:31,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:52:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:31,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:52:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:31,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-17 14:52:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:31,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-17 14:52:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:31,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-17 14:52:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:31,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 14:52:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:31,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-17 14:52:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:31,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-17 14:52:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:31,952 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-17 14:52:31,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:52:31,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051732243] [2021-12-17 14:52:31,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051732243] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:52:31,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:52:31,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:52:31,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971317417] [2021-12-17 14:52:31,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:52:31,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:52:31,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:52:31,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:52:31,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:52:31,954 INFO L87 Difference]: Start difference. First operand 2397 states and 4018 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:52:33,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:52:33,052 INFO L93 Difference]: Finished difference Result 5796 states and 9893 transitions. [2021-12-17 14:52:33,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:52:33,053 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 121 [2021-12-17 14:52:33,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:52:33,069 INFO L225 Difference]: With dead ends: 5796 [2021-12-17 14:52:33,069 INFO L226 Difference]: Without dead ends: 3884 [2021-12-17 14:52:33,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:52:33,075 INFO L933 BasicCegarLoop]: 635 mSDtfsCounter, 1141 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 1462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 14:52:33,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1157 Valid, 1400 Invalid, 1462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 14:52:33,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3884 states. [2021-12-17 14:52:33,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3884 to 3691. [2021-12-17 14:52:33,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3691 states, 3087 states have (on average 1.6077097505668934) internal successors, (4963), 3092 states have internal predecessors, (4963), 582 states have call successors, (582), 17 states have call predecessors, (582), 21 states have return successors, (655), 581 states have call predecessors, (655), 581 states have call successors, (655) [2021-12-17 14:52:33,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3691 states to 3691 states and 6200 transitions. [2021-12-17 14:52:33,267 INFO L78 Accepts]: Start accepts. Automaton has 3691 states and 6200 transitions. Word has length 121 [2021-12-17 14:52:33,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:52:33,267 INFO L470 AbstractCegarLoop]: Abstraction has 3691 states and 6200 transitions. [2021-12-17 14:52:33,268 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:52:33,268 INFO L276 IsEmpty]: Start isEmpty. Operand 3691 states and 6200 transitions. [2021-12-17 14:52:33,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-17 14:52:33,277 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:52:33,277 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:52:33,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 14:52:33,277 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:52:33,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:52:33,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1448203013, now seen corresponding path program 1 times [2021-12-17 14:52:33,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:52:33,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665121833] [2021-12-17 14:52:33,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:52:33,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:52:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:33,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:52:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:33,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:52:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:33,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:52:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:33,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:52:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:33,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:52:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:33,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:52:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:33,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-17 14:52:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:33,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 14:52:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:33,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-17 14:52:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:33,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-17 14:52:33,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:33,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-17 14:52:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:33,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-17 14:52:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:33,348 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-17 14:52:33,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:52:33,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665121833] [2021-12-17 14:52:33,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665121833] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:52:33,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:52:33,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:52:33,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970756409] [2021-12-17 14:52:33,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:52:33,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:52:33,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:52:33,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:52:33,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:52:33,350 INFO L87 Difference]: Start difference. First operand 3691 states and 6200 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:52:34,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:52:34,467 INFO L93 Difference]: Finished difference Result 8899 states and 15257 transitions. [2021-12-17 14:52:34,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:52:34,467 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 122 [2021-12-17 14:52:34,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:52:34,490 INFO L225 Difference]: With dead ends: 8899 [2021-12-17 14:52:34,491 INFO L226 Difference]: Without dead ends: 6025 [2021-12-17 14:52:34,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:52:34,499 INFO L933 BasicCegarLoop]: 627 mSDtfsCounter, 1165 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 14:52:34,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1181 Valid, 1409 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 14:52:34,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6025 states. [2021-12-17 14:52:34,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6025 to 5832. [2021-12-17 14:52:34,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5832 states, 4852 states have (on average 1.6011953833470733) internal successors, (7769), 4857 states have internal predecessors, (7769), 958 states have call successors, (958), 17 states have call predecessors, (958), 21 states have return successors, (1075), 957 states have call predecessors, (1075), 957 states have call successors, (1075) [2021-12-17 14:52:34,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5832 states to 5832 states and 9802 transitions. [2021-12-17 14:52:34,773 INFO L78 Accepts]: Start accepts. Automaton has 5832 states and 9802 transitions. Word has length 122 [2021-12-17 14:52:34,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:52:34,774 INFO L470 AbstractCegarLoop]: Abstraction has 5832 states and 9802 transitions. [2021-12-17 14:52:34,774 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:52:34,774 INFO L276 IsEmpty]: Start isEmpty. Operand 5832 states and 9802 transitions. [2021-12-17 14:52:34,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 14:52:34,785 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:52:34,785 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:52:34,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 14:52:34,786 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:52:34,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:52:34,786 INFO L85 PathProgramCache]: Analyzing trace with hash -423922022, now seen corresponding path program 1 times [2021-12-17 14:52:34,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:52:34,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211888911] [2021-12-17 14:52:34,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:52:34,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:52:34,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:34,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:52:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:34,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:52:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:34,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:52:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:34,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:52:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:34,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:52:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:34,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:52:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:34,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-17 14:52:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:34,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-17 14:52:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:34,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 14:52:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:34,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 14:52:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:34,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 14:52:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:34,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-17 14:52:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:34,859 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-17 14:52:34,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:52:34,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211888911] [2021-12-17 14:52:34,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211888911] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:52:34,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:52:34,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:52:34,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164801252] [2021-12-17 14:52:34,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:52:34,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:52:34,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:52:34,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:52:34,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:52:34,862 INFO L87 Difference]: Start difference. First operand 5832 states and 9802 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:52:36,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:52:36,180 INFO L93 Difference]: Finished difference Result 14516 states and 24870 transitions. [2021-12-17 14:52:36,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:52:36,181 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 123 [2021-12-17 14:52:36,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:52:36,222 INFO L225 Difference]: With dead ends: 14516 [2021-12-17 14:52:36,222 INFO L226 Difference]: Without dead ends: 9903 [2021-12-17 14:52:36,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:52:36,236 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 1156 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 14:52:36,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1171 Valid, 1390 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 14:52:36,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9903 states. [2021-12-17 14:52:36,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9903 to 9710. [2021-12-17 14:52:36,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9710 states, 8124 states have (on average 1.5987198424421467) internal successors, (12988), 8129 states have internal predecessors, (12988), 1564 states have call successors, (1564), 17 states have call predecessors, (1564), 21 states have return successors, (1759), 1563 states have call predecessors, (1759), 1563 states have call successors, (1759) [2021-12-17 14:52:36,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9710 states to 9710 states and 16311 transitions. [2021-12-17 14:52:36,711 INFO L78 Accepts]: Start accepts. Automaton has 9710 states and 16311 transitions. Word has length 123 [2021-12-17 14:52:36,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:52:36,711 INFO L470 AbstractCegarLoop]: Abstraction has 9710 states and 16311 transitions. [2021-12-17 14:52:36,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:52:36,712 INFO L276 IsEmpty]: Start isEmpty. Operand 9710 states and 16311 transitions. [2021-12-17 14:52:36,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 14:52:36,774 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:52:36,774 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:52:36,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 14:52:36,775 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:52:36,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:52:36,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1473374131, now seen corresponding path program 1 times [2021-12-17 14:52:36,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:52:36,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297167157] [2021-12-17 14:52:36,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:52:36,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:52:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:36,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:52:36,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:36,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:52:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:36,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:52:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:36,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:52:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:36,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:52:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:36,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:52:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:36,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-17 14:52:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:36,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 14:52:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:36,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-17 14:52:36,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:36,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-17 14:52:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:36,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 14:52:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:36,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-17 14:52:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:36,844 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-17 14:52:36,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:52:36,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297167157] [2021-12-17 14:52:36,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297167157] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:52:36,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:52:36,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:52:36,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952542213] [2021-12-17 14:52:36,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:52:36,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:52:36,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:52:36,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:52:36,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:52:36,846 INFO L87 Difference]: Start difference. First operand 9710 states and 16311 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:52:38,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:52:38,492 INFO L93 Difference]: Finished difference Result 25225 states and 43151 transitions. [2021-12-17 14:52:38,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:52:38,493 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 124 [2021-12-17 14:52:38,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:52:38,557 INFO L225 Difference]: With dead ends: 25225 [2021-12-17 14:52:38,558 INFO L226 Difference]: Without dead ends: 17216 [2021-12-17 14:52:38,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:52:38,585 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 1143 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 1432 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 14:52:38,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1159 Valid, 1432 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 14:52:38,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17216 states. [2021-12-17 14:52:39,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17216 to 17023. [2021-12-17 14:52:39,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17023 states, 14234 states have (on average 1.590136293382043) internal successors, (22634), 14239 states have internal predecessors, (22634), 2767 states have call successors, (2767), 17 states have call predecessors, (2767), 21 states have return successors, (3106), 2766 states have call predecessors, (3106), 2766 states have call successors, (3106) [2021-12-17 14:52:39,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17023 states to 17023 states and 28507 transitions. [2021-12-17 14:52:39,438 INFO L78 Accepts]: Start accepts. Automaton has 17023 states and 28507 transitions. Word has length 124 [2021-12-17 14:52:39,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:52:39,439 INFO L470 AbstractCegarLoop]: Abstraction has 17023 states and 28507 transitions. [2021-12-17 14:52:39,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:52:39,439 INFO L276 IsEmpty]: Start isEmpty. Operand 17023 states and 28507 transitions. [2021-12-17 14:52:39,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-17 14:52:39,463 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:52:39,463 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:52:39,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 14:52:39,464 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:52:39,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:52:39,464 INFO L85 PathProgramCache]: Analyzing trace with hash 627752441, now seen corresponding path program 1 times [2021-12-17 14:52:39,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:52:39,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603920587] [2021-12-17 14:52:39,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:52:39,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:52:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:39,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:52:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:39,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:52:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:39,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:52:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:39,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:52:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:39,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:52:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:39,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:52:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:39,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 14:52:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:39,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-17 14:52:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:39,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-17 14:52:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:39,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-17 14:52:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:39,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 14:52:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:39,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-17 14:52:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:39,545 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-17 14:52:39,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:52:39,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603920587] [2021-12-17 14:52:39,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603920587] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:52:39,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:52:39,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:52:39,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911750896] [2021-12-17 14:52:39,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:52:39,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:52:39,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:52:39,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:52:39,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:52:39,548 INFO L87 Difference]: Start difference. First operand 17023 states and 28507 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:52:41,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:52:41,655 INFO L93 Difference]: Finished difference Result 45201 states and 77164 transitions. [2021-12-17 14:52:41,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:52:41,655 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 125 [2021-12-17 14:52:41,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:52:41,787 INFO L225 Difference]: With dead ends: 45201 [2021-12-17 14:52:41,787 INFO L226 Difference]: Without dead ends: 30556 [2021-12-17 14:52:41,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:52:41,837 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 1125 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 14:52:41,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1140 Valid, 1422 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 14:52:41,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30556 states. [2021-12-17 14:52:43,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30556 to 30363. [2021-12-17 14:52:43,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30363 states, 25535 states have (on average 1.5859408654787546) internal successors, (40497), 25540 states have internal predecessors, (40497), 4806 states have call successors, (4806), 17 states have call predecessors, (4806), 21 states have return successors, (5419), 4805 states have call predecessors, (5419), 4805 states have call successors, (5419) [2021-12-17 14:52:43,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30363 states to 30363 states and 50722 transitions. [2021-12-17 14:52:43,321 INFO L78 Accepts]: Start accepts. Automaton has 30363 states and 50722 transitions. Word has length 125 [2021-12-17 14:52:43,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:52:43,321 INFO L470 AbstractCegarLoop]: Abstraction has 30363 states and 50722 transitions. [2021-12-17 14:52:43,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:52:43,322 INFO L276 IsEmpty]: Start isEmpty. Operand 30363 states and 50722 transitions. [2021-12-17 14:52:43,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-17 14:52:43,348 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:52:43,348 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:52:43,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 14:52:43,349 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:52:43,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:52:43,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1060158123, now seen corresponding path program 1 times [2021-12-17 14:52:43,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:52:43,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744243453] [2021-12-17 14:52:43,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:52:43,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:52:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:43,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:52:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:43,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:52:43,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:43,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:52:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:43,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:52:43,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:43,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:52:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:43,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:52:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:43,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-17 14:52:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:43,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-17 14:52:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:43,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 14:52:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:43,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-17 14:52:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:43,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-17 14:52:43,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:43,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-17 14:52:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:43,441 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-17 14:52:43,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:52:43,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744243453] [2021-12-17 14:52:43,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744243453] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:52:43,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:52:43,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:52:43,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854311732] [2021-12-17 14:52:43,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:52:43,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:52:43,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:52:43,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:52:43,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:52:43,444 INFO L87 Difference]: Start difference. First operand 30363 states and 50722 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:52:46,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:52:46,678 INFO L93 Difference]: Finished difference Result 82938 states and 140688 transitions. [2021-12-17 14:52:46,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:52:46,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 126 [2021-12-17 14:52:46,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:52:46,848 INFO L225 Difference]: With dead ends: 82938 [2021-12-17 14:52:46,848 INFO L226 Difference]: Without dead ends: 55765 [2021-12-17 14:52:46,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:52:46,905 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 1131 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 14:52:46,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1146 Valid, 1416 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 14:52:46,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55765 states. [2021-12-17 14:52:49,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55765 to 55572. [2021-12-17 14:52:49,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55572 states, 47029 states have (on average 1.5804716238916414) internal successors, (74328), 47034 states have internal predecessors, (74328), 8521 states have call successors, (8521), 17 states have call predecessors, (8521), 21 states have return successors, (9666), 8520 states have call predecessors, (9666), 8520 states have call successors, (9666) [2021-12-17 14:52:49,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55572 states to 55572 states and 92515 transitions. [2021-12-17 14:52:49,601 INFO L78 Accepts]: Start accepts. Automaton has 55572 states and 92515 transitions. Word has length 126 [2021-12-17 14:52:49,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:52:49,601 INFO L470 AbstractCegarLoop]: Abstraction has 55572 states and 92515 transitions. [2021-12-17 14:52:49,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:52:49,602 INFO L276 IsEmpty]: Start isEmpty. Operand 55572 states and 92515 transitions. [2021-12-17 14:52:49,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 14:52:49,625 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:52:49,625 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:52:49,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 14:52:49,626 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:52:49,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:52:49,626 INFO L85 PathProgramCache]: Analyzing trace with hash -489258535, now seen corresponding path program 1 times [2021-12-17 14:52:49,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:52:49,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451572348] [2021-12-17 14:52:49,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:52:49,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:52:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:49,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:52:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:49,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:52:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:49,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:52:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:49,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:52:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:49,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:52:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:49,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:52:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:49,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 14:52:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:49,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-17 14:52:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:49,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 14:52:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:49,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-17 14:52:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:49,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-17 14:52:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:49,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 14:52:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:52:49,698 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-17 14:52:49,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:52:49,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451572348] [2021-12-17 14:52:49,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451572348] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:52:49,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:52:49,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:52:49,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226190780] [2021-12-17 14:52:49,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:52:49,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:52:49,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:52:49,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:52:49,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:52:49,699 INFO L87 Difference]: Start difference. First operand 55572 states and 92515 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:52:54,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:52:54,355 INFO L93 Difference]: Finished difference Result 103994 states and 176674 transitions. [2021-12-17 14:52:54,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:52:54,356 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 127 [2021-12-17 14:52:54,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:52:54,798 INFO L225 Difference]: With dead ends: 103994 [2021-12-17 14:52:54,799 INFO L226 Difference]: Without dead ends: 103839 [2021-12-17 14:52:54,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:52:54,856 INFO L933 BasicCegarLoop]: 622 mSDtfsCounter, 1153 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 1462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 14:52:54,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1169 Valid, 1389 Invalid, 1462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 14:52:54,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103839 states. [2021-12-17 14:52:59,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103839 to 103646. [2021-12-17 14:52:59,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103646 states, 88304 states have (on average 1.5736433230657727) internal successors, (138959), 88309 states have internal predecessors, (138959), 15320 states have call successors, (15320), 17 states have call predecessors, (15320), 21 states have return successors, (17511), 15319 states have call predecessors, (17511), 15319 states have call successors, (17511) [2021-12-17 14:53:00,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103646 states to 103646 states and 171790 transitions. [2021-12-17 14:53:00,295 INFO L78 Accepts]: Start accepts. Automaton has 103646 states and 171790 transitions. Word has length 127 [2021-12-17 14:53:00,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:53:00,295 INFO L470 AbstractCegarLoop]: Abstraction has 103646 states and 171790 transitions. [2021-12-17 14:53:00,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 14:53:00,295 INFO L276 IsEmpty]: Start isEmpty. Operand 103646 states and 171790 transitions. [2021-12-17 14:53:00,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-17 14:53:00,321 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:53:00,321 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:53:00,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 14:53:00,322 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:53:00,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:53:00,322 INFO L85 PathProgramCache]: Analyzing trace with hash -574273588, now seen corresponding path program 1 times [2021-12-17 14:53:00,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:53:00,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765067032] [2021-12-17 14:53:00,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:53:00,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:53:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:00,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:53:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:00,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:53:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:00,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:53:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:00,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:53:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:00,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:53:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:00,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:53:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:00,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-17 14:53:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:00,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-17 14:53:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:00,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-17 14:53:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:00,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-17 14:53:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:00,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 14:53:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:00,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-17 14:53:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:00,415 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-17 14:53:00,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:53:00,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765067032] [2021-12-17 14:53:00,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765067032] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:53:00,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882044545] [2021-12-17 14:53:00,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:53:00,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:53:00,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:53:00,417 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:53:00,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-17 14:53:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:00,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 1152 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-17 14:53:00,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:53:01,142 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-17 14:53:01,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 14:53:01,469 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-17 14:53:01,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882044545] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 14:53:01,470 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 14:53:01,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2021-12-17 14:53:01,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598899550] [2021-12-17 14:53:01,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 14:53:01,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-17 14:53:01,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:53:01,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-17 14:53:01,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2021-12-17 14:53:01,472 INFO L87 Difference]: Start difference. First operand 103646 states and 171790 transitions. Second operand has 21 states, 21 states have (on average 10.238095238095237) internal successors, (215), 16 states have internal predecessors, (215), 4 states have call successors, (39), 10 states have call predecessors, (39), 8 states have return successors, (33), 5 states have call predecessors, (33), 4 states have call successors, (33) [2021-12-17 14:53:12,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:53:12,985 INFO L93 Difference]: Finished difference Result 208078 states and 355699 transitions. [2021-12-17 14:53:12,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-12-17 14:53:12,986 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 10.238095238095237) internal successors, (215), 16 states have internal predecessors, (215), 4 states have call successors, (39), 10 states have call predecessors, (39), 8 states have return successors, (33), 5 states have call predecessors, (33), 4 states have call successors, (33) Word has length 128 [2021-12-17 14:53:12,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:53:13,933 INFO L225 Difference]: With dead ends: 208078 [2021-12-17 14:53:13,933 INFO L226 Difference]: Without dead ends: 207929 [2021-12-17 14:53:14,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1102 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=899, Invalid=3657, Unknown=0, NotChecked=0, Total=4556 [2021-12-17 14:53:14,022 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 4544 mSDsluCounter, 2879 mSDsCounter, 0 mSdLazyCounter, 7446 mSolverCounterSat, 2044 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4556 SdHoareTripleChecker+Valid, 3618 SdHoareTripleChecker+Invalid, 9490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2044 IncrementalHoareTripleChecker+Valid, 7446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-17 14:53:14,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4556 Valid, 3618 Invalid, 9490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2044 Valid, 7446 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-17 14:53:14,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207929 states.