./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec3_product25.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_spec3_product25.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 7d9bd30209b011511ea69bcafefe21478bc06dd6e294313a5c1455634308a9dd --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 00:47:46,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 00:47:46,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 00:47:46,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 00:47:46,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 00:47:46,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 00:47:46,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 00:47:46,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 00:47:46,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 00:47:46,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 00:47:46,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 00:47:46,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 00:47:46,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 00:47:46,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 00:47:46,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 00:47:46,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 00:47:46,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 00:47:46,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 00:47:46,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 00:47:46,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 00:47:46,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 00:47:46,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 00:47:46,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 00:47:46,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 00:47:46,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 00:47:46,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 00:47:46,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 00:47:46,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 00:47:46,144 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 00:47:46,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 00:47:46,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 00:47:46,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 00:47:46,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 00:47:46,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 00:47:46,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 00:47:46,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 00:47:46,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 00:47:46,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 00:47:46,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 00:47:46,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 00:47:46,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 00:47:46,151 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 00:47:46,177 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 00:47:46,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 00:47:46,178 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 00:47:46,178 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 00:47:46,179 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 00:47:46,179 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 00:47:46,180 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 00:47:46,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 00:47:46,180 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 00:47:46,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 00:47:46,181 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 00:47:46,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 00:47:46,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 00:47:46,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 00:47:46,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 00:47:46,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 00:47:46,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 00:47:46,182 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 00:47:46,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 00:47:46,182 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 00:47:46,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 00:47:46,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 00:47:46,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 00:47:46,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 00:47:46,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 00:47:46,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 00:47:46,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 00:47:46,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 00:47:46,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 00:47:46,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 00:47:46,183 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 00:47:46,184 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 00:47:46,184 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 00:47:46,184 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d9bd30209b011511ea69bcafefe21478bc06dd6e294313a5c1455634308a9dd [2021-12-28 00:47:46,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 00:47:46,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 00:47:46,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 00:47:46,456 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 00:47:46,457 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 00:47:46,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec3_product25.cil.c [2021-12-28 00:47:46,501 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b08c2ae2/6582311703244a0982a8ec042b81da93/FLAG15a8ec025 [2021-12-28 00:47:46,995 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 00:47:46,995 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec3_product25.cil.c [2021-12-28 00:47:47,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b08c2ae2/6582311703244a0982a8ec042b81da93/FLAG15a8ec025 [2021-12-28 00:47:47,296 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b08c2ae2/6582311703244a0982a8ec042b81da93 [2021-12-28 00:47:47,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 00:47:47,299 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 00:47:47,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 00:47:47,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 00:47:47,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 00:47:47,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 12:47:47" (1/1) ... [2021-12-28 00:47:47,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79761277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:47:47, skipping insertion in model container [2021-12-28 00:47:47,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 12:47:47" (1/1) ... [2021-12-28 00:47:47,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 00:47:47,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 00:47:47,845 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_spec3_product25.cil.c[64426,64439] [2021-12-28 00:47:47,847 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 00:47:47,863 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 00:47:47,961 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_spec3_product25.cil.c[64426,64439] [2021-12-28 00:47:47,961 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 00:47:47,984 INFO L208 MainTranslator]: Completed translation [2021-12-28 00:47:47,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:47:47 WrapperNode [2021-12-28 00:47:47,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 00:47:47,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 00:47:47,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 00:47:47,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 00:47:47,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:47:47" (1/1) ... [2021-12-28 00:47:48,028 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:47:47" (1/1) ... [2021-12-28 00:47:48,061 INFO L137 Inliner]: procedures = 131, calls = 227, calls flagged for inlining = 59, calls inlined = 56, statements flattened = 1048 [2021-12-28 00:47:48,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 00:47:48,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 00:47:48,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 00:47:48,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 00:47:48,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:47:47" (1/1) ... [2021-12-28 00:47:48,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:47:47" (1/1) ... [2021-12-28 00:47:48,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:47:47" (1/1) ... [2021-12-28 00:47:48,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:47:47" (1/1) ... [2021-12-28 00:47:48,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:47:47" (1/1) ... [2021-12-28 00:47:48,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:47:47" (1/1) ... [2021-12-28 00:47:48,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:47:47" (1/1) ... [2021-12-28 00:47:48,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 00:47:48,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 00:47:48,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 00:47:48,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 00:47:48,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:47:47" (1/1) ... [2021-12-28 00:47:48,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 00:47:48,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:47:48,168 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) [2021-12-28 00:47:48,192 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-12-28 00:47:48,192 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-12-28 00:47:48,192 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-12-28 00:47:48,192 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-12-28 00:47:48,193 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2021-12-28 00:47:48,193 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2021-12-28 00:47:48,193 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-28 00:47:48,193 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 [2021-12-28 00:47:48,197 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-28 00:47:48,199 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-28 00:47:48,199 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-28 00:47:48,199 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-28 00:47:48,199 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-28 00:47:48,199 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-28 00:47:48,200 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-28 00:47:48,200 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-28 00:47:48,200 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-28 00:47:48,200 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-28 00:47:48,200 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-28 00:47:48,200 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-28 00:47:48,200 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-28 00:47:48,200 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-28 00:47:48,200 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-28 00:47:48,201 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-28 00:47:48,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 00:47:48,201 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-28 00:47:48,201 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-28 00:47:48,201 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-28 00:47:48,201 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-28 00:47:48,201 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-12-28 00:47:48,201 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-12-28 00:47:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-28 00:47:48,202 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-28 00:47:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-28 00:47:48,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-28 00:47:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-28 00:47:48,202 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-28 00:47:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-28 00:47:48,202 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-28 00:47:48,203 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-28 00:47:48,203 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-28 00:47:48,203 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-28 00:47:48,203 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-28 00:47:48,203 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-28 00:47:48,203 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-28 00:47:48,203 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-28 00:47:48,203 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-28 00:47:48,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 00:47:48,204 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-28 00:47:48,204 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-28 00:47:48,204 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-12-28 00:47:48,204 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-12-28 00:47:48,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 00:47:48,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 00:47:48,382 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 00:47:48,383 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 00:47:49,037 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 00:47:49,053 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 00:47:49,053 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 00:47:49,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 12:47:49 BoogieIcfgContainer [2021-12-28 00:47:49,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 00:47:49,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 00:47:49,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 00:47:49,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 00:47:49,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 12:47:47" (1/3) ... [2021-12-28 00:47:49,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6313ac86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 12:47:49, skipping insertion in model container [2021-12-28 00:47:49,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:47:47" (2/3) ... [2021-12-28 00:47:49,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6313ac86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 12:47:49, skipping insertion in model container [2021-12-28 00:47:49,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 12:47:49" (3/3) ... [2021-12-28 00:47:49,062 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product25.cil.c [2021-12-28 00:47:49,066 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 00:47:49,066 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 00:47:49,100 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 00:47:49,106 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 [2021-12-28 00:47:49,107 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 00:47:49,137 INFO L276 IsEmpty]: Start isEmpty. Operand has 401 states, 313 states have (on average 1.5559105431309903) internal successors, (487), 318 states have internal predecessors, (487), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2021-12-28 00:47:49,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-28 00:47:49,151 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:47:49,152 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:47:49,152 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:47:49,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:47:49,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1305343454, now seen corresponding path program 1 times [2021-12-28 00:47:49,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:47:49,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684131104] [2021-12-28 00:47:49,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:47:49,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:47:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:49,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:47:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:49,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:47:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:49,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:47:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:49,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:47:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:49,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:47:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:49,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:47:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:49,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 00:47:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:49,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 00:47:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:49,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 00:47:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:49,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 00:47:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:49,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 00:47:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:49,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 00:47:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:49,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 00:47:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:49,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 00:47:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:49,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 00:47:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:49,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 00:47:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:49,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 00:47:49,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:49,625 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:47:49,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:47:49,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684131104] [2021-12-28 00:47:49,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684131104] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:47:49,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842456764] [2021-12-28 00:47:49,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:47:49,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:47:49,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:47:49,631 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) [2021-12-28 00:47:49,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 00:47:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:49,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 1224 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-28 00:47:49,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:47:50,140 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-28 00:47:50,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:47:50,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842456764] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:47:50,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:47:50,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-28 00:47:50,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349405732] [2021-12-28 00:47:50,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:47:50,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 00:47:50,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:47:50,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 00:47:50,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:47:50,180 INFO L87 Difference]: Start difference. First operand has 401 states, 313 states have (on average 1.5559105431309903) internal successors, (487), 318 states have internal predecessors, (487), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-28 00:47:50,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:47:50,227 INFO L93 Difference]: Finished difference Result 608 states and 912 transitions. [2021-12-28 00:47:50,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 00:47:50,228 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 131 [2021-12-28 00:47:50,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:47:50,238 INFO L225 Difference]: With dead ends: 608 [2021-12-28 00:47:50,238 INFO L226 Difference]: Without dead ends: 393 [2021-12-28 00:47:50,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:47:50,254 INFO L933 BasicCegarLoop]: 605 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, 605 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 [2021-12-28 00:47:50,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:47:50,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-12-28 00:47:50,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2021-12-28 00:47:50,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 307 states have (on average 1.5504885993485342) internal successors, (476), 310 states have internal predecessors, (476), 62 states have call successors, (62), 24 states have call predecessors, (62), 23 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2021-12-28 00:47:50,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 597 transitions. [2021-12-28 00:47:50,313 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 597 transitions. Word has length 131 [2021-12-28 00:47:50,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:47:50,314 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 597 transitions. [2021-12-28 00:47:50,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-28 00:47:50,315 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 597 transitions. [2021-12-28 00:47:50,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-28 00:47:50,321 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:47:50,321 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:47:50,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 00:47:50,522 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 [2021-12-28 00:47:50,522 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:47:50,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:47:50,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1013781935, now seen corresponding path program 1 times [2021-12-28 00:47:50,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:47:50,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416421750] [2021-12-28 00:47:50,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:47:50,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:47:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:50,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:47:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:50,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:47:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:50,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:47:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:50,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:47:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:50,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:47:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:50,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:47:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:50,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 00:47:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:50,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 00:47:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:50,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 00:47:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:50,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 00:47:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:50,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 00:47:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:50,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 00:47:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:50,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 00:47:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:50,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 00:47:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:50,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 00:47:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:50,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 00:47:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:50,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 00:47:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:50,687 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:47:50,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:47:50,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416421750] [2021-12-28 00:47:50,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416421750] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:47:50,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634799946] [2021-12-28 00:47:50,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:47:50,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:47:50,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:47:50,692 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) [2021-12-28 00:47:50,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 00:47:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:50,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 1225 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 00:47:50,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:47:51,101 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-28 00:47:51,102 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:47:51,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634799946] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:47:51,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:47:51,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-28 00:47:51,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990366761] [2021-12-28 00:47:51,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:47:51,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 00:47:51,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:47:51,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 00:47:51,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:47:51,104 INFO L87 Difference]: Start difference. First operand 393 states and 597 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-28 00:47:51,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:47:51,132 INFO L93 Difference]: Finished difference Result 597 states and 886 transitions. [2021-12-28 00:47:51,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 00:47:51,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 132 [2021-12-28 00:47:51,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:47:51,135 INFO L225 Difference]: With dead ends: 597 [2021-12-28 00:47:51,136 INFO L226 Difference]: Without dead ends: 396 [2021-12-28 00:47:51,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:47:51,137 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 1 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1188 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 [2021-12-28 00:47:51,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1188 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:47:51,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-12-28 00:47:51,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 395. [2021-12-28 00:47:51,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 309 states have (on average 1.5469255663430421) internal successors, (478), 312 states have internal predecessors, (478), 62 states have call successors, (62), 24 states have call predecessors, (62), 23 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2021-12-28 00:47:51,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 599 transitions. [2021-12-28 00:47:51,157 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 599 transitions. Word has length 132 [2021-12-28 00:47:51,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:47:51,158 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 599 transitions. [2021-12-28 00:47:51,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-28 00:47:51,158 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 599 transitions. [2021-12-28 00:47:51,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-28 00:47:51,160 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:47:51,160 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:47:51,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-28 00:47:51,373 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 [2021-12-28 00:47:51,373 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:47:51,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:47:51,373 INFO L85 PathProgramCache]: Analyzing trace with hash -642876850, now seen corresponding path program 1 times [2021-12-28 00:47:51,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:47:51,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333251911] [2021-12-28 00:47:51,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:47:51,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:47:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:51,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:47:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:51,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:47:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:51,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:47:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:51,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:47:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:51,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:47:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:51,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:47:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:51,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 00:47:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:51,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-28 00:47:51,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:51,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 00:47:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:51,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 00:47:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:51,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 00:47:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:51,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 00:47:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:51,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 00:47:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:51,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 00:47:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:51,495 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 00:47:51,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:47:51,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333251911] [2021-12-28 00:47:51,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333251911] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:47:51,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850706107] [2021-12-28 00:47:51,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:47:51,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:47:51,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:47:51,512 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) [2021-12-28 00:47:51,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 00:47:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:51,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 00:47:51,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:47:51,878 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-28 00:47:51,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:47:51,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850706107] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:47:51,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:47:51,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-28 00:47:51,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535244655] [2021-12-28 00:47:51,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:47:51,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 00:47:51,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:47:51,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 00:47:51,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:47:51,881 INFO L87 Difference]: Start difference. First operand 395 states and 599 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:47:51,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:47:51,926 INFO L93 Difference]: Finished difference Result 838 states and 1290 transitions. [2021-12-28 00:47:51,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 00:47:51,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 119 [2021-12-28 00:47:51,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:47:51,934 INFO L225 Difference]: With dead ends: 838 [2021-12-28 00:47:51,934 INFO L226 Difference]: Without dead ends: 470 [2021-12-28 00:47:51,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:47:51,937 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 134 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1166 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 [2021-12-28 00:47:51,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 1166 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:47:51,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-12-28 00:47:51,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 462. [2021-12-28 00:47:51,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 362 states have (on average 1.5662983425414365) internal successors, (567), 365 states have internal predecessors, (567), 76 states have call successors, (76), 24 states have call predecessors, (76), 23 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2021-12-28 00:47:51,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 716 transitions. [2021-12-28 00:47:51,982 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 716 transitions. Word has length 119 [2021-12-28 00:47:51,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:47:51,983 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 716 transitions. [2021-12-28 00:47:51,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:47:51,983 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 716 transitions. [2021-12-28 00:47:51,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-28 00:47:51,988 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:47:51,988 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:47:52,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 00:47:52,203 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 [2021-12-28 00:47:52,203 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:47:52,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:47:52,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1080961897, now seen corresponding path program 1 times [2021-12-28 00:47:52,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:47:52,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325260230] [2021-12-28 00:47:52,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:47:52,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:47:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:52,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:47:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:52,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:47:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:52,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:47:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:52,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:47:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:52,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:47:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:52,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:47:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:52,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-28 00:47:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:52,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 00:47:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:52,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 00:47:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:52,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 00:47:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:52,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 00:47:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:52,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 00:47:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:52,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 00:47:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:52,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 00:47:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:52,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 00:47:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:52,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-28 00:47:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:52,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-28 00:47:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:52,332 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-28 00:47:52,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:47:52,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325260230] [2021-12-28 00:47:52,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325260230] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:47:52,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361407867] [2021-12-28 00:47:52,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:47:52,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:47:52,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:47:52,335 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) [2021-12-28 00:47:52,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 00:47:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:52,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 00:47:52,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:47:52,784 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-28 00:47:52,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:47:52,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361407867] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:47:52,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:47:52,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-28 00:47:52,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614006368] [2021-12-28 00:47:52,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:47:52,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 00:47:52,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:47:52,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 00:47:52,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-28 00:47:52,787 INFO L87 Difference]: Start difference. First operand 462 states and 716 transitions. Second operand has 5 states, 4 states have (on average 22.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-28 00:47:52,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:47:52,832 INFO L93 Difference]: Finished difference Result 915 states and 1422 transitions. [2021-12-28 00:47:52,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 00:47:52,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 139 [2021-12-28 00:47:52,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:47:52,835 INFO L225 Difference]: With dead ends: 915 [2021-12-28 00:47:52,835 INFO L226 Difference]: Without dead ends: 464 [2021-12-28 00:47:52,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:47:52,837 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 152 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 2178 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 [2021-12-28 00:47:52,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 2178 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:47:52,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-12-28 00:47:52,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2021-12-28 00:47:52,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 363 states have (on average 1.5647382920110193) internal successors, (568), 367 states have internal predecessors, (568), 76 states have call successors, (76), 24 states have call predecessors, (76), 24 states have return successors, (75), 72 states have call predecessors, (75), 73 states have call successors, (75) [2021-12-28 00:47:52,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 719 transitions. [2021-12-28 00:47:52,851 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 719 transitions. Word has length 139 [2021-12-28 00:47:52,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:47:52,851 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 719 transitions. [2021-12-28 00:47:52,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-28 00:47:52,852 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 719 transitions. [2021-12-28 00:47:52,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-28 00:47:52,853 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:47:52,854 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:47:52,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 00:47:53,067 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 [2021-12-28 00:47:53,067 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:47:53,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:47:53,068 INFO L85 PathProgramCache]: Analyzing trace with hash -58103339, now seen corresponding path program 1 times [2021-12-28 00:47:53,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:47:53,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670219929] [2021-12-28 00:47:53,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:47:53,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:47:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:47:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:47:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:47:53,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:47:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 00:47:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 00:47:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 00:47:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 00:47:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 00:47:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 00:47:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 00:47:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 00:47:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 00:47:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 00:47:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,177 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-28 00:47:53,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:47:53,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670219929] [2021-12-28 00:47:53,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670219929] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:47:53,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280278392] [2021-12-28 00:47:53,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:47:53,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:47:53,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:47:53,179 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) [2021-12-28 00:47:53,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 00:47:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 1166 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 00:47:53,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:47:53,565 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-28 00:47:53,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:47:53,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280278392] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:47:53,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:47:53,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-28 00:47:53,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381886553] [2021-12-28 00:47:53,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:47:53,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 00:47:53,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:47:53,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 00:47:53,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-28 00:47:53,567 INFO L87 Difference]: Start difference. First operand 464 states and 719 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-28 00:47:53,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:47:53,615 INFO L93 Difference]: Finished difference Result 917 states and 1427 transitions. [2021-12-28 00:47:53,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 00:47:53,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 121 [2021-12-28 00:47:53,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:47:53,618 INFO L225 Difference]: With dead ends: 917 [2021-12-28 00:47:53,618 INFO L226 Difference]: Without dead ends: 466 [2021-12-28 00:47:53,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-28 00:47:53,621 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 151 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 2167 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 [2021-12-28 00:47:53,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 2167 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:47:53,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2021-12-28 00:47:53,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2021-12-28 00:47:53,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 364 states have (on average 1.5631868131868132) internal successors, (569), 369 states have internal predecessors, (569), 76 states have call successors, (76), 24 states have call predecessors, (76), 25 states have return successors, (80), 72 states have call predecessors, (80), 73 states have call successors, (80) [2021-12-28 00:47:53,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 725 transitions. [2021-12-28 00:47:53,636 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 725 transitions. Word has length 121 [2021-12-28 00:47:53,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:47:53,636 INFO L470 AbstractCegarLoop]: Abstraction has 466 states and 725 transitions. [2021-12-28 00:47:53,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-28 00:47:53,636 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 725 transitions. [2021-12-28 00:47:53,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-28 00:47:53,638 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:47:53,639 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:47:53,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 00:47:53,846 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 [2021-12-28 00:47:53,847 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:47:53,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:47:53,847 INFO L85 PathProgramCache]: Analyzing trace with hash 176486693, now seen corresponding path program 1 times [2021-12-28 00:47:53,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:47:53,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618242940] [2021-12-28 00:47:53,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:47:53,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:47:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:47:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:47:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:47:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:47:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:47:53,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 00:47:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-28 00:47:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 00:47:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 00:47:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 00:47:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 00:47:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 00:47:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 00:47:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 00:47:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-28 00:47:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-28 00:47:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-28 00:47:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:53,945 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-28 00:47:53,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:47:53,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618242940] [2021-12-28 00:47:53,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618242940] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:47:53,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:47:53,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 00:47:53,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193559802] [2021-12-28 00:47:53,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:47:53,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 00:47:53,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:47:53,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 00:47:53,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:47:53,947 INFO L87 Difference]: Start difference. First operand 466 states and 725 transitions. Second operand has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-28 00:47:55,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:47:55,764 INFO L93 Difference]: Finished difference Result 1086 states and 1708 transitions. [2021-12-28 00:47:55,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 00:47:55,764 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 141 [2021-12-28 00:47:55,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:47:55,768 INFO L225 Difference]: With dead ends: 1086 [2021-12-28 00:47:55,771 INFO L226 Difference]: Without dead ends: 643 [2021-12-28 00:47:55,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 00:47:55,774 INFO L933 BasicCegarLoop]: 714 mSDtfsCounter, 1454 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 2461 mSolverCounterSat, 574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 3035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 2461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-28 00:47:55,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1475 Valid, 1700 Invalid, 3035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [574 Valid, 2461 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-28 00:47:55,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-12-28 00:47:55,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 466. [2021-12-28 00:47:55,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 364 states have (on average 1.5631868131868132) internal successors, (569), 369 states have internal predecessors, (569), 76 states have call successors, (76), 24 states have call predecessors, (76), 25 states have return successors, (79), 72 states have call predecessors, (79), 73 states have call successors, (79) [2021-12-28 00:47:55,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 724 transitions. [2021-12-28 00:47:55,808 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 724 transitions. Word has length 141 [2021-12-28 00:47:55,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:47:55,808 INFO L470 AbstractCegarLoop]: Abstraction has 466 states and 724 transitions. [2021-12-28 00:47:55,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-28 00:47:55,809 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 724 transitions. [2021-12-28 00:47:55,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 00:47:55,810 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:47:55,810 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] [2021-12-28 00:47:55,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 00:47:55,811 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:47:55,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:47:55,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1784676613, now seen corresponding path program 1 times [2021-12-28 00:47:55,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:47:55,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186839748] [2021-12-28 00:47:55,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:47:55,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:47:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:55,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:47:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:55,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:47:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:55,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:47:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:55,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:47:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:55,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:47:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:55,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 00:47:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:55,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 00:47:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:55,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 00:47:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:55,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 00:47:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:55,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 00:47:55,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:55,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 00:47:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:55,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 00:47:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:55,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 00:47:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:55,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-28 00:47:55,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:55,928 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 00:47:55,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:47:55,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186839748] [2021-12-28 00:47:55,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186839748] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:47:55,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:47:55,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 00:47:55,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685719015] [2021-12-28 00:47:55,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:47:55,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 00:47:55,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:47:55,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 00:47:55,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:47:55,930 INFO L87 Difference]: Start difference. First operand 466 states and 724 transitions. Second operand has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-28 00:47:57,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:47:57,615 INFO L93 Difference]: Finished difference Result 1088 states and 1711 transitions. [2021-12-28 00:47:57,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 00:47:57,615 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 123 [2021-12-28 00:47:57,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:47:57,620 INFO L225 Difference]: With dead ends: 1088 [2021-12-28 00:47:57,620 INFO L226 Difference]: Without dead ends: 645 [2021-12-28 00:47:57,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 00:47:57,624 INFO L933 BasicCegarLoop]: 719 mSDtfsCounter, 1444 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 2482 mSolverCounterSat, 573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 3055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 2482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-28 00:47:57,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1464 Valid, 1705 Invalid, 3055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [573 Valid, 2482 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-28 00:47:57,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2021-12-28 00:47:57,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 468. [2021-12-28 00:47:57,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 365 states have (on average 1.5616438356164384) internal successors, (570), 371 states have internal predecessors, (570), 76 states have call successors, (76), 24 states have call predecessors, (76), 26 states have return successors, (81), 72 states have call predecessors, (81), 73 states have call successors, (81) [2021-12-28 00:47:57,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 727 transitions. [2021-12-28 00:47:57,647 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 727 transitions. Word has length 123 [2021-12-28 00:47:57,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:47:57,648 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 727 transitions. [2021-12-28 00:47:57,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-28 00:47:57,648 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 727 transitions. [2021-12-28 00:47:57,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-28 00:47:57,651 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:47:57,651 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:47:57,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 00:47:57,651 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:47:57,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:47:57,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1720912982, now seen corresponding path program 1 times [2021-12-28 00:47:57,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:47:57,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636541295] [2021-12-28 00:47:57,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:47:57,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:47:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:57,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:47:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:57,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:47:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:57,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:47:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:57,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:47:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:57,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:47:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:57,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:47:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:57,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-28 00:47:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:57,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 00:47:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:57,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 00:47:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:57,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 00:47:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:57,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 00:47:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:57,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 00:47:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:57,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 00:47:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:57,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-28 00:47:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:57,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 00:47:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:57,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-28 00:47:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:57,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-28 00:47:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:57,783 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-28 00:47:57,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:47:57,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636541295] [2021-12-28 00:47:57,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636541295] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:47:57,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:47:57,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 00:47:57,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690587830] [2021-12-28 00:47:57,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:47:57,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 00:47:57,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:47:57,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 00:47:57,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-28 00:47:57,785 INFO L87 Difference]: Start difference. First operand 468 states and 727 transitions. Second operand has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-28 00:48:00,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:48:00,028 INFO L93 Difference]: Finished difference Result 1086 states and 1706 transitions. [2021-12-28 00:48:00,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 00:48:00,029 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 143 [2021-12-28 00:48:00,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:48:00,033 INFO L225 Difference]: With dead ends: 1086 [2021-12-28 00:48:00,033 INFO L226 Difference]: Without dead ends: 645 [2021-12-28 00:48:00,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-28 00:48:00,035 INFO L933 BasicCegarLoop]: 703 mSDtfsCounter, 1587 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 4445 mSolverCounterSat, 638 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 2069 SdHoareTripleChecker+Invalid, 5083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 638 IncrementalHoareTripleChecker+Valid, 4445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-28 00:48:00,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1587 Valid, 2069 Invalid, 5083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [638 Valid, 4445 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-28 00:48:00,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2021-12-28 00:48:00,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 468. [2021-12-28 00:48:00,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 365 states have (on average 1.5616438356164384) internal successors, (570), 371 states have internal predecessors, (570), 76 states have call successors, (76), 24 states have call predecessors, (76), 26 states have return successors, (80), 72 states have call predecessors, (80), 73 states have call successors, (80) [2021-12-28 00:48:00,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 726 transitions. [2021-12-28 00:48:00,063 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 726 transitions. Word has length 143 [2021-12-28 00:48:00,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:48:00,064 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 726 transitions. [2021-12-28 00:48:00,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-28 00:48:00,064 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 726 transitions. [2021-12-28 00:48:00,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-28 00:48:00,065 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:48:00,066 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] [2021-12-28 00:48:00,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 00:48:00,066 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:48:00,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:48:00,066 INFO L85 PathProgramCache]: Analyzing trace with hash 701914440, now seen corresponding path program 1 times [2021-12-28 00:48:00,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:48:00,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727256642] [2021-12-28 00:48:00,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:48:00,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:48:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:00,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:48:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:00,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:48:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:00,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:48:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:00,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:48:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:00,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:48:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:00,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:48:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:00,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 00:48:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:00,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 00:48:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:00,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 00:48:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:00,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 00:48:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:00,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 00:48:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:00,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 00:48:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:00,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 00:48:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:00,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 00:48:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:00,201 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-28 00:48:00,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:48:00,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727256642] [2021-12-28 00:48:00,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727256642] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:48:00,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:48:00,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 00:48:00,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409488710] [2021-12-28 00:48:00,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:48:00,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 00:48:00,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:48:00,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 00:48:00,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-28 00:48:00,204 INFO L87 Difference]: Start difference. First operand 468 states and 726 transitions. Second operand has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 8 states have internal predecessors, (85), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-28 00:48:02,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:48:02,363 INFO L93 Difference]: Finished difference Result 1088 states and 1712 transitions. [2021-12-28 00:48:02,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 00:48:02,364 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 8 states have internal predecessors, (85), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 125 [2021-12-28 00:48:02,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:48:02,368 INFO L225 Difference]: With dead ends: 1088 [2021-12-28 00:48:02,368 INFO L226 Difference]: Without dead ends: 647 [2021-12-28 00:48:02,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-28 00:48:02,371 INFO L933 BasicCegarLoop]: 708 mSDtfsCounter, 1577 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 4505 mSolverCounterSat, 627 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 2074 SdHoareTripleChecker+Invalid, 5132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 4505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-28 00:48:02,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1577 Valid, 2074 Invalid, 5132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [627 Valid, 4505 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-28 00:48:02,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2021-12-28 00:48:02,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 470. [2021-12-28 00:48:02,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 366 states have (on average 1.5601092896174864) internal successors, (571), 373 states have internal predecessors, (571), 76 states have call successors, (76), 24 states have call predecessors, (76), 27 states have return successors, (85), 72 states have call predecessors, (85), 73 states have call successors, (85) [2021-12-28 00:48:02,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 732 transitions. [2021-12-28 00:48:02,391 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 732 transitions. Word has length 125 [2021-12-28 00:48:02,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:48:02,392 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 732 transitions. [2021-12-28 00:48:02,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 8 states have internal predecessors, (85), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-28 00:48:02,392 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 732 transitions. [2021-12-28 00:48:02,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-28 00:48:02,394 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:48:02,394 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:48:02,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 00:48:02,394 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:48:02,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:48:02,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1434658735, now seen corresponding path program 1 times [2021-12-28 00:48:02,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:48:02,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308096679] [2021-12-28 00:48:02,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:48:02,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:48:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:02,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:48:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:02,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:48:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:02,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:48:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:02,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:48:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:02,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:48:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:02,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:48:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:02,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 00:48:02,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:02,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 00:48:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:02,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 00:48:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:02,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 00:48:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:02,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 00:48:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:02,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 00:48:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:02,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 00:48:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:02,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 00:48:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:02,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 00:48:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:02,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-28 00:48:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:02,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-28 00:48:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:02,485 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 00:48:02,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:48:02,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308096679] [2021-12-28 00:48:02,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308096679] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:48:02,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400769466] [2021-12-28 00:48:02,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:48:02,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:48:02,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:48:02,487 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) [2021-12-28 00:48:02,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 00:48:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:02,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 1252 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 00:48:02,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:48:02,964 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 00:48:02,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 00:48:03,177 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 00:48:03,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400769466] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 00:48:03,177 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 00:48:03,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2021-12-28 00:48:03,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297321820] [2021-12-28 00:48:03,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 00:48:03,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-28 00:48:03,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:48:03,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-28 00:48:03,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-28 00:48:03,179 INFO L87 Difference]: Start difference. First operand 470 states and 732 transitions. Second operand has 11 states, 11 states have (on average 12.0) internal successors, (132), 7 states have internal predecessors, (132), 2 states have call successors, (42), 6 states have call predecessors, (42), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-28 00:48:04,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:48:04,701 INFO L93 Difference]: Finished difference Result 1290 states and 2105 transitions. [2021-12-28 00:48:04,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-28 00:48:04,702 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 7 states have internal predecessors, (132), 2 states have call successors, (42), 6 states have call predecessors, (42), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 145 [2021-12-28 00:48:04,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:48:04,729 INFO L225 Difference]: With dead ends: 1290 [2021-12-28 00:48:04,729 INFO L226 Difference]: Without dead ends: 1089 [2021-12-28 00:48:04,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-12-28 00:48:04,731 INFO L933 BasicCegarLoop]: 824 mSDtfsCounter, 2086 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 1584 mSolverCounterSat, 783 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2143 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 2367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 783 IncrementalHoareTripleChecker+Valid, 1584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-28 00:48:04,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2143 Valid, 2095 Invalid, 2367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [783 Valid, 1584 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-28 00:48:04,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2021-12-28 00:48:04,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 888. [2021-12-28 00:48:04,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 705 states have (on average 1.6226950354609928) internal successors, (1144), 712 states have internal predecessors, (1144), 155 states have call successors, (155), 24 states have call predecessors, (155), 27 states have return successors, (174), 151 states have call predecessors, (174), 152 states have call successors, (174) [2021-12-28 00:48:04,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1473 transitions. [2021-12-28 00:48:04,768 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1473 transitions. Word has length 145 [2021-12-28 00:48:04,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:48:04,768 INFO L470 AbstractCegarLoop]: Abstraction has 888 states and 1473 transitions. [2021-12-28 00:48:04,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 7 states have internal predecessors, (132), 2 states have call successors, (42), 6 states have call predecessors, (42), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-28 00:48:04,769 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1473 transitions. [2021-12-28 00:48:04,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-28 00:48:04,772 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:48:04,772 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:48:04,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 00:48:04,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:48:04,997 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:48:04,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:48:04,998 INFO L85 PathProgramCache]: Analyzing trace with hash -888848884, now seen corresponding path program 1 times [2021-12-28 00:48:04,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:48:04,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032616431] [2021-12-28 00:48:04,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:48:04,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:48:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:05,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:48:05,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:05,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:48:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:05,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:48:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:05,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:48:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:05,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:48:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:05,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:48:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:05,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 00:48:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:05,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 00:48:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:05,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 00:48:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:05,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 00:48:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:05,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 00:48:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:05,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 00:48:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:05,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 00:48:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:05,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 00:48:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:05,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-28 00:48:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:05,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-28 00:48:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:05,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-28 00:48:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:05,099 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 00:48:05,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:48:05,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032616431] [2021-12-28 00:48:05,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032616431] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:48:05,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:48:05,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:48:05,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925355237] [2021-12-28 00:48:05,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:48:05,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:48:05,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:48:05,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:48:05,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:48:05,101 INFO L87 Difference]: Start difference. First operand 888 states and 1473 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-28 00:48:06,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:48:06,397 INFO L93 Difference]: Finished difference Result 2308 states and 3906 transitions. [2021-12-28 00:48:06,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:48:06,397 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 151 [2021-12-28 00:48:06,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:48:06,404 INFO L225 Difference]: With dead ends: 2308 [2021-12-28 00:48:06,404 INFO L226 Difference]: Without dead ends: 1488 [2021-12-28 00:48:06,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:48:06,406 INFO L933 BasicCegarLoop]: 770 mSDtfsCounter, 1439 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1457 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 1910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 00:48:06,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1457 Valid, 1593 Invalid, 1910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-28 00:48:06,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2021-12-28 00:48:06,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1303. [2021-12-28 00:48:06,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1303 states, 1041 states have (on average 1.6368876080691643) internal successors, (1704), 1048 states have internal predecessors, (1704), 234 states have call successors, (234), 24 states have call predecessors, (234), 27 states have return successors, (263), 230 states have call predecessors, (263), 231 states have call successors, (263) [2021-12-28 00:48:06,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 2201 transitions. [2021-12-28 00:48:06,456 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 2201 transitions. Word has length 151 [2021-12-28 00:48:06,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:48:06,456 INFO L470 AbstractCegarLoop]: Abstraction has 1303 states and 2201 transitions. [2021-12-28 00:48:06,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-28 00:48:06,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 2201 transitions. [2021-12-28 00:48:06,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-28 00:48:06,462 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:48:06,462 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:48:06,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 00:48:06,462 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:48:06,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:48:06,463 INFO L85 PathProgramCache]: Analyzing trace with hash 315855730, now seen corresponding path program 1 times [2021-12-28 00:48:06,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:48:06,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104127761] [2021-12-28 00:48:06,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:48:06,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:48:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:06,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:48:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:06,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:48:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:06,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:48:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:06,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:48:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:06,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:48:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:06,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:48:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:06,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 00:48:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:06,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 00:48:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:06,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 00:48:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:06,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 00:48:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:06,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 00:48:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:06,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 00:48:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:06,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 00:48:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:06,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 00:48:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:06,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-28 00:48:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:06,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-28 00:48:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:06,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 00:48:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:06,547 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 00:48:06,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:48:06,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104127761] [2021-12-28 00:48:06,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104127761] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:48:06,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:48:06,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:48:06,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727950319] [2021-12-28 00:48:06,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:48:06,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:48:06,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:48:06,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:48:06,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:48:06,549 INFO L87 Difference]: Start difference. First operand 1303 states and 2201 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-28 00:48:07,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:48:07,873 INFO L93 Difference]: Finished difference Result 3322 states and 5684 transitions. [2021-12-28 00:48:07,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:48:07,874 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 152 [2021-12-28 00:48:07,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:48:07,882 INFO L225 Difference]: With dead ends: 3322 [2021-12-28 00:48:07,883 INFO L226 Difference]: Without dead ends: 2140 [2021-12-28 00:48:07,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:48:07,886 INFO L933 BasicCegarLoop]: 752 mSDtfsCounter, 1437 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 1896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 00:48:07,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1455 Valid, 1527 Invalid, 1896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-28 00:48:07,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2021-12-28 00:48:07,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 1955. [2021-12-28 00:48:07,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1955 states, 1574 states have (on average 1.6461245235069886) internal successors, (2591), 1581 states have internal predecessors, (2591), 353 states have call successors, (353), 24 states have call predecessors, (353), 27 states have return successors, (382), 349 states have call predecessors, (382), 350 states have call successors, (382) [2021-12-28 00:48:07,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1955 states to 1955 states and 3326 transitions. [2021-12-28 00:48:07,960 INFO L78 Accepts]: Start accepts. Automaton has 1955 states and 3326 transitions. Word has length 152 [2021-12-28 00:48:07,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:48:07,961 INFO L470 AbstractCegarLoop]: Abstraction has 1955 states and 3326 transitions. [2021-12-28 00:48:07,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-28 00:48:07,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1955 states and 3326 transitions. [2021-12-28 00:48:07,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-28 00:48:07,969 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:48:07,969 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:48:07,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-28 00:48:07,970 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:48:07,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:48:07,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1406893208, now seen corresponding path program 1 times [2021-12-28 00:48:07,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:48:07,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551561623] [2021-12-28 00:48:07,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:48:07,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:48:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:08,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:48:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:08,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:48:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:08,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:48:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:08,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:48:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:08,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:48:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:08,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:48:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:08,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 00:48:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:08,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 00:48:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:08,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 00:48:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:08,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 00:48:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:08,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 00:48:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:08,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 00:48:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:08,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-28 00:48:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:08,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-28 00:48:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:08,055 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:48:08,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:48:08,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551561623] [2021-12-28 00:48:08,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551561623] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:48:08,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:48:08,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:48:08,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023357826] [2021-12-28 00:48:08,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:48:08,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:48:08,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:48:08,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:48:08,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:48:08,057 INFO L87 Difference]: Start difference. First operand 1955 states and 3326 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:48:09,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:48:09,327 INFO L93 Difference]: Finished difference Result 4852 states and 8386 transitions. [2021-12-28 00:48:09,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:48:09,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2021-12-28 00:48:09,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:48:09,341 INFO L225 Difference]: With dead ends: 4852 [2021-12-28 00:48:09,341 INFO L226 Difference]: Without dead ends: 3143 [2021-12-28 00:48:09,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:48:09,346 INFO L933 BasicCegarLoop]: 746 mSDtfsCounter, 1437 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 621 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1456 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 1867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 621 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 00:48:09,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1456 Valid, 1516 Invalid, 1867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [621 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-28 00:48:09,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3143 states. [2021-12-28 00:48:09,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3143 to 2958. [2021-12-28 00:48:09,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2958 states, 2415 states have (on average 1.653416149068323) internal successors, (3993), 2422 states have internal predecessors, (3993), 515 states have call successors, (515), 24 states have call predecessors, (515), 27 states have return successors, (560), 511 states have call predecessors, (560), 512 states have call successors, (560) [2021-12-28 00:48:09,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2958 states to 2958 states and 5068 transitions. [2021-12-28 00:48:09,504 INFO L78 Accepts]: Start accepts. Automaton has 2958 states and 5068 transitions. Word has length 134 [2021-12-28 00:48:09,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:48:09,504 INFO L470 AbstractCegarLoop]: Abstraction has 2958 states and 5068 transitions. [2021-12-28 00:48:09,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:48:09,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2958 states and 5068 transitions. [2021-12-28 00:48:09,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-28 00:48:09,516 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:48:09,516 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:48:09,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-28 00:48:09,516 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:48:09,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:48:09,516 INFO L85 PathProgramCache]: Analyzing trace with hash -924443309, now seen corresponding path program 1 times [2021-12-28 00:48:09,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:48:09,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738052187] [2021-12-28 00:48:09,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:48:09,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:48:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:09,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:48:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:09,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:48:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:09,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:48:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:09,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:48:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:09,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:48:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:09,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:48:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:09,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 00:48:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:09,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 00:48:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:09,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 00:48:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:09,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 00:48:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:09,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 00:48:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:09,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 00:48:09,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:09,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-28 00:48:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:09,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-28 00:48:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:09,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-28 00:48:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:09,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-28 00:48:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:09,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-28 00:48:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:09,600 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 00:48:09,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:48:09,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738052187] [2021-12-28 00:48:09,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738052187] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:48:09,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:48:09,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:48:09,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580698312] [2021-12-28 00:48:09,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:48:09,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:48:09,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:48:09,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:48:09,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:48:09,602 INFO L87 Difference]: Start difference. First operand 2958 states and 5068 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-28 00:48:10,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:48:10,984 INFO L93 Difference]: Finished difference Result 7276 states and 12675 transitions. [2021-12-28 00:48:10,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:48:10,985 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 154 [2021-12-28 00:48:10,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:48:11,015 INFO L225 Difference]: With dead ends: 7276 [2021-12-28 00:48:11,016 INFO L226 Difference]: Without dead ends: 4768 [2021-12-28 00:48:11,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:48:11,023 INFO L933 BasicCegarLoop]: 750 mSDtfsCounter, 1433 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 630 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 1892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 630 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 00:48:11,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1451 Valid, 1520 Invalid, 1892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [630 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-28 00:48:11,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4768 states. [2021-12-28 00:48:11,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4768 to 4583. [2021-12-28 00:48:11,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4583 states, 3795 states have (on average 1.658498023715415) internal successors, (6294), 3802 states have internal predecessors, (6294), 760 states have call successors, (760), 24 states have call predecessors, (760), 27 states have return successors, (831), 756 states have call predecessors, (831), 757 states have call successors, (831) [2021-12-28 00:48:11,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4583 states to 4583 states and 7885 transitions. [2021-12-28 00:48:11,209 INFO L78 Accepts]: Start accepts. Automaton has 4583 states and 7885 transitions. Word has length 154 [2021-12-28 00:48:11,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:48:11,210 INFO L470 AbstractCegarLoop]: Abstraction has 4583 states and 7885 transitions. [2021-12-28 00:48:11,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-28 00:48:11,220 INFO L276 IsEmpty]: Start isEmpty. Operand 4583 states and 7885 transitions. [2021-12-28 00:48:11,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-28 00:48:11,233 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:48:11,233 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:48:11,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-28 00:48:11,234 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:48:11,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:48:11,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1617107434, now seen corresponding path program 1 times [2021-12-28 00:48:11,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:48:11,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001176168] [2021-12-28 00:48:11,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:48:11,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:48:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:11,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:48:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:11,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:48:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:11,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:48:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:11,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:48:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:11,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:48:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:11,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:48:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:11,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 00:48:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:11,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 00:48:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:11,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 00:48:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:11,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 00:48:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:11,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 00:48:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:11,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 00:48:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:11,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 00:48:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:11,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-28 00:48:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:11,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 00:48:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:11,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-28 00:48:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:11,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-28 00:48:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:11,331 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 00:48:11,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:48:11,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001176168] [2021-12-28 00:48:11,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001176168] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:48:11,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:48:11,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:48:11,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759917535] [2021-12-28 00:48:11,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:48:11,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:48:11,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:48:11,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:48:11,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:48:11,334 INFO L87 Difference]: Start difference. First operand 4583 states and 7885 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-28 00:48:12,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:48:12,766 INFO L93 Difference]: Finished difference Result 11322 states and 19835 transitions. [2021-12-28 00:48:12,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:48:12,766 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 155 [2021-12-28 00:48:12,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:48:12,796 INFO L225 Difference]: With dead ends: 11322 [2021-12-28 00:48:12,797 INFO L226 Difference]: Without dead ends: 7501 [2021-12-28 00:48:12,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:48:12,807 INFO L933 BasicCegarLoop]: 762 mSDtfsCounter, 1432 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 1907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 00:48:12,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1450 Valid, 1564 Invalid, 1907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-28 00:48:12,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7501 states. [2021-12-28 00:48:13,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7501 to 7316. [2021-12-28 00:48:13,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7316 states, 6035 states have (on average 1.6568351284175642) internal successors, (9999), 6042 states have internal predecessors, (9999), 1253 states have call successors, (1253), 24 states have call predecessors, (1253), 27 states have return successors, (1368), 1249 states have call predecessors, (1368), 1250 states have call successors, (1368) [2021-12-28 00:48:13,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7316 states to 7316 states and 12620 transitions. [2021-12-28 00:48:13,091 INFO L78 Accepts]: Start accepts. Automaton has 7316 states and 12620 transitions. Word has length 155 [2021-12-28 00:48:13,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:48:13,092 INFO L470 AbstractCegarLoop]: Abstraction has 7316 states and 12620 transitions. [2021-12-28 00:48:13,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-28 00:48:13,092 INFO L276 IsEmpty]: Start isEmpty. Operand 7316 states and 12620 transitions. [2021-12-28 00:48:13,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-28 00:48:13,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:48:13,111 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:48:13,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-28 00:48:13,112 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:48:13,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:48:13,112 INFO L85 PathProgramCache]: Analyzing trace with hash 660079567, now seen corresponding path program 1 times [2021-12-28 00:48:13,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:48:13,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490314369] [2021-12-28 00:48:13,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:48:13,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:48:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:13,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:48:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:13,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:48:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:13,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:48:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:13,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:48:13,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:13,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:48:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:13,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:48:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:13,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 00:48:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:13,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 00:48:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:13,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 00:48:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:13,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 00:48:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:13,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 00:48:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:13,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 00:48:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:13,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 00:48:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:13,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-28 00:48:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:13,191 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:48:13,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:48:13,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490314369] [2021-12-28 00:48:13,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490314369] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:48:13,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:48:13,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:48:13,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204093250] [2021-12-28 00:48:13,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:48:13,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:48:13,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:48:13,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:48:13,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:48:13,193 INFO L87 Difference]: Start difference. First operand 7316 states and 12620 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:48:14,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:48:14,682 INFO L93 Difference]: Finished difference Result 18657 states and 32719 transitions. [2021-12-28 00:48:14,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:48:14,683 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 137 [2021-12-28 00:48:14,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:48:14,731 INFO L225 Difference]: With dead ends: 18657 [2021-12-28 00:48:14,731 INFO L226 Difference]: Without dead ends: 12480 [2021-12-28 00:48:14,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:48:14,749 INFO L933 BasicCegarLoop]: 747 mSDtfsCounter, 1434 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 638 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 1894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 638 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 00:48:14,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1453 Valid, 1518 Invalid, 1894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [638 Valid, 1256 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-28 00:48:14,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12480 states. [2021-12-28 00:48:15,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12480 to 12295. [2021-12-28 00:48:15,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12295 states, 10192 states have (on average 1.6570839874411303) internal successors, (16889), 10199 states have internal predecessors, (16889), 2075 states have call successors, (2075), 24 states have call predecessors, (2075), 27 states have return successors, (2268), 2071 states have call predecessors, (2268), 2072 states have call successors, (2268) [2021-12-28 00:48:15,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12295 states to 12295 states and 21232 transitions. [2021-12-28 00:48:15,269 INFO L78 Accepts]: Start accepts. Automaton has 12295 states and 21232 transitions. Word has length 137 [2021-12-28 00:48:15,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:48:15,270 INFO L470 AbstractCegarLoop]: Abstraction has 12295 states and 21232 transitions. [2021-12-28 00:48:15,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:48:15,270 INFO L276 IsEmpty]: Start isEmpty. Operand 12295 states and 21232 transitions. [2021-12-28 00:48:15,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 00:48:15,297 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:48:15,297 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:48:15,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-28 00:48:15,297 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:48:15,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:48:15,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1965928872, now seen corresponding path program 1 times [2021-12-28 00:48:15,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:48:15,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265108814] [2021-12-28 00:48:15,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:48:15,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:48:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:15,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:48:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:15,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:48:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:15,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:48:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:15,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:48:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:15,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:48:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:15,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:48:15,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:15,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 00:48:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:15,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 00:48:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:15,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 00:48:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:15,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 00:48:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:15,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 00:48:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:15,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-28 00:48:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:15,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 00:48:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:15,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-28 00:48:15,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:15,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-28 00:48:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:15,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-28 00:48:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:15,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-28 00:48:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:15,381 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 00:48:15,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:48:15,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265108814] [2021-12-28 00:48:15,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265108814] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:48:15,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:48:15,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:48:15,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915548123] [2021-12-28 00:48:15,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:48:15,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:48:15,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:48:15,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:48:15,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:48:15,384 INFO L87 Difference]: Start difference. First operand 12295 states and 21232 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-28 00:48:17,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:48:17,076 INFO L93 Difference]: Finished difference Result 29615 states and 51684 transitions. [2021-12-28 00:48:17,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:48:17,077 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 157 [2021-12-28 00:48:17,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:48:17,151 INFO L225 Difference]: With dead ends: 29615 [2021-12-28 00:48:17,151 INFO L226 Difference]: Without dead ends: 19433 [2021-12-28 00:48:17,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:48:17,183 INFO L933 BasicCegarLoop]: 748 mSDtfsCounter, 1432 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 00:48:17,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1451 Valid, 1493 Invalid, 1890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 00:48:17,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19433 states. [2021-12-28 00:48:18,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19433 to 19248. [2021-12-28 00:48:18,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19248 states, 15942 states have (on average 1.6328566051938276) internal successors, (26031), 15949 states have internal predecessors, (26031), 3278 states have call successors, (3278), 24 states have call predecessors, (3278), 27 states have return successors, (3615), 3274 states have call predecessors, (3615), 3275 states have call successors, (3615) [2021-12-28 00:48:18,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19248 states to 19248 states and 32924 transitions. [2021-12-28 00:48:18,122 INFO L78 Accepts]: Start accepts. Automaton has 19248 states and 32924 transitions. Word has length 157 [2021-12-28 00:48:18,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:48:18,123 INFO L470 AbstractCegarLoop]: Abstraction has 19248 states and 32924 transitions. [2021-12-28 00:48:18,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-28 00:48:18,123 INFO L276 IsEmpty]: Start isEmpty. Operand 19248 states and 32924 transitions. [2021-12-28 00:48:18,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-28 00:48:18,148 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:48:18,148 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:48:18,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-28 00:48:18,148 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:48:18,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:48:18,149 INFO L85 PathProgramCache]: Analyzing trace with hash 70043246, now seen corresponding path program 1 times [2021-12-28 00:48:18,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:48:18,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176200813] [2021-12-28 00:48:18,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:48:18,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:48:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:18,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:48:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:18,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:48:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:18,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:48:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:18,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:48:18,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:18,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:48:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:18,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:48:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:18,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 00:48:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:18,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 00:48:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:18,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 00:48:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:18,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 00:48:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:18,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 00:48:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:18,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 00:48:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:18,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-28 00:48:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:18,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-28 00:48:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:18,227 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:48:18,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:48:18,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176200813] [2021-12-28 00:48:18,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176200813] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:48:18,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:48:18,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:48:18,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010055074] [2021-12-28 00:48:18,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:48:18,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:48:18,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:48:18,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:48:18,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:48:18,229 INFO L87 Difference]: Start difference. First operand 19248 states and 32924 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:48:20,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:48:20,311 INFO L93 Difference]: Finished difference Result 51047 states and 88804 transitions. [2021-12-28 00:48:20,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:48:20,312 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 139 [2021-12-28 00:48:20,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:48:20,438 INFO L225 Difference]: With dead ends: 51047 [2021-12-28 00:48:20,438 INFO L226 Difference]: Without dead ends: 34554 [2021-12-28 00:48:20,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:48:20,474 INFO L933 BasicCegarLoop]: 747 mSDtfsCounter, 1426 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 633 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 633 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 00:48:20,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1444 Valid, 1518 Invalid, 1890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [633 Valid, 1257 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 00:48:20,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34554 states. [2021-12-28 00:48:21,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34554 to 34369. [2021-12-28 00:48:21,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34369 states, 28613 states have (on average 1.6298186139167512) internal successors, (46634), 28620 states have internal predecessors, (46634), 5728 states have call successors, (5728), 24 states have call predecessors, (5728), 27 states have return successors, (6339), 5724 states have call predecessors, (6339), 5725 states have call successors, (6339) [2021-12-28 00:48:21,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34369 states to 34369 states and 58701 transitions. [2021-12-28 00:48:21,991 INFO L78 Accepts]: Start accepts. Automaton has 34369 states and 58701 transitions. Word has length 139 [2021-12-28 00:48:21,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:48:21,991 INFO L470 AbstractCegarLoop]: Abstraction has 34369 states and 58701 transitions. [2021-12-28 00:48:21,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:48:21,992 INFO L276 IsEmpty]: Start isEmpty. Operand 34369 states and 58701 transitions. [2021-12-28 00:48:22,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-28 00:48:22,022 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:48:22,023 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:48:22,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-28 00:48:22,023 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:48:22,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:48:22,023 INFO L85 PathProgramCache]: Analyzing trace with hash 2013384690, now seen corresponding path program 1 times [2021-12-28 00:48:22,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:48:22,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689249704] [2021-12-28 00:48:22,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:48:22,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:48:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:22,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:48:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:22,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:48:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:22,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:48:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:22,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:48:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:22,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:48:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:22,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:48:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:22,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 00:48:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:22,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 00:48:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:22,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 00:48:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:22,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 00:48:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:22,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 00:48:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:22,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 00:48:22,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:22,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-28 00:48:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:22,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-28 00:48:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:22,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-28 00:48:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:22,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-28 00:48:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:22,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-28 00:48:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:22,143 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 00:48:22,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:48:22,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689249704] [2021-12-28 00:48:22,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689249704] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:48:22,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:48:22,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:48:22,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938673480] [2021-12-28 00:48:22,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:48:22,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:48:22,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:48:22,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:48:22,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:48:22,145 INFO L87 Difference]: Start difference. First operand 34369 states and 58701 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-28 00:48:24,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:48:24,984 INFO L93 Difference]: Finished difference Result 93919 states and 162598 transitions. [2021-12-28 00:48:24,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:48:24,984 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 159 [2021-12-28 00:48:24,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:48:25,324 INFO L225 Difference]: With dead ends: 93919 [2021-12-28 00:48:25,324 INFO L226 Difference]: Without dead ends: 63221 [2021-12-28 00:48:25,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:48:25,388 INFO L933 BasicCegarLoop]: 744 mSDtfsCounter, 1429 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 642 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 1892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 642 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 00:48:25,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1448 Valid, 1515 Invalid, 1892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [642 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-28 00:48:25,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63221 states. [2021-12-28 00:48:27,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63221 to 63036. [2021-12-28 00:48:27,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63036 states, 52767 states have (on average 1.62573199158565) internal successors, (85785), 52774 states have internal predecessors, (85785), 10241 states have call successors, (10241), 24 states have call predecessors, (10241), 27 states have return successors, (11384), 10237 states have call predecessors, (11384), 10238 states have call successors, (11384) [2021-12-28 00:48:28,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63036 states to 63036 states and 107410 transitions. [2021-12-28 00:48:28,190 INFO L78 Accepts]: Start accepts. Automaton has 63036 states and 107410 transitions. Word has length 159 [2021-12-28 00:48:28,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:48:28,190 INFO L470 AbstractCegarLoop]: Abstraction has 63036 states and 107410 transitions. [2021-12-28 00:48:28,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-28 00:48:28,191 INFO L276 IsEmpty]: Start isEmpty. Operand 63036 states and 107410 transitions. [2021-12-28 00:48:28,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-28 00:48:28,229 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:48:28,229 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:48:28,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-28 00:48:28,230 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:48:28,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:48:28,230 INFO L85 PathProgramCache]: Analyzing trace with hash -2050541362, now seen corresponding path program 1 times [2021-12-28 00:48:28,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:48:28,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792889667] [2021-12-28 00:48:28,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:48:28,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:48:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:28,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:48:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:28,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:48:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:28,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:48:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:28,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:48:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:28,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:48:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:28,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:48:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:28,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 00:48:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:28,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 00:48:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:28,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 00:48:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:28,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 00:48:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:28,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 00:48:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:28,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-28 00:48:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:28,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-28 00:48:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:28,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-28 00:48:28,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:28,314 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:48:28,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:48:28,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792889667] [2021-12-28 00:48:28,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792889667] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:48:28,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:48:28,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:48:28,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101476931] [2021-12-28 00:48:28,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:48:28,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:48:28,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:48:28,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:48:28,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:48:28,316 INFO L87 Difference]: Start difference. First operand 63036 states and 107410 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:48:32,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:48:32,648 INFO L93 Difference]: Finished difference Result 118295 states and 205232 transitions. [2021-12-28 00:48:32,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:48:32,649 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 141 [2021-12-28 00:48:32,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:48:33,065 INFO L225 Difference]: With dead ends: 118295 [2021-12-28 00:48:33,066 INFO L226 Difference]: Without dead ends: 118094 [2021-12-28 00:48:33,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:48:33,123 INFO L933 BasicCegarLoop]: 753 mSDtfsCounter, 1421 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 00:48:33,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1439 Valid, 1524 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-28 00:48:33,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118094 states. [2021-12-28 00:48:37,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118094 to 117909. [2021-12-28 00:48:37,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117909 states, 99272 states have (on average 1.620557659763075) internal successors, (160876), 99279 states have internal predecessors, (160876), 18609 states have call successors, (18609), 24 states have call predecessors, (18609), 27 states have return successors, (20798), 18605 states have call predecessors, (20798), 18606 states have call successors, (20798) [2021-12-28 00:48:38,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117909 states to 117909 states and 200283 transitions. [2021-12-28 00:48:38,502 INFO L78 Accepts]: Start accepts. Automaton has 117909 states and 200283 transitions. Word has length 141 [2021-12-28 00:48:38,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:48:38,502 INFO L470 AbstractCegarLoop]: Abstraction has 117909 states and 200283 transitions. [2021-12-28 00:48:38,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:48:38,503 INFO L276 IsEmpty]: Start isEmpty. Operand 117909 states and 200283 transitions. [2021-12-28 00:48:38,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-28 00:48:38,552 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:48:38,552 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:48:38,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-28 00:48:38,553 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:48:38,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:48:38,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1013191733, now seen corresponding path program 1 times [2021-12-28 00:48:38,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:48:38,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176985240] [2021-12-28 00:48:38,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:48:38,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:48:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:38,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:48:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:38,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:48:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:38,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:48:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:38,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:48:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:38,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:48:38,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:38,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:48:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:38,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 00:48:38,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:38,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 00:48:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:38,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 00:48:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:38,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 00:48:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:38,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-28 00:48:38,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:38,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 00:48:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:38,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-28 00:48:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:38,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 00:48:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:48:38,660 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:48:38,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:48:38,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176985240] [2021-12-28 00:48:38,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176985240] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:48:38,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:48:38,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 00:48:38,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751925359] [2021-12-28 00:48:38,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:48:38,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 00:48:38,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:48:38,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 00:48:38,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:48:38,662 INFO L87 Difference]: Start difference. First operand 117909 states and 200283 transitions. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (18), 7 states have call predecessors, (18), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-28 00:48:45,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:48:45,577 INFO L93 Difference]: Finished difference Result 119047 states and 205374 transitions. [2021-12-28 00:48:45,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-28 00:48:45,578 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (18), 7 states have call predecessors, (18), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 142 [2021-12-28 00:48:45,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted.