./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec3_product17.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_product17.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 ece4fa184f09e2184919c279a0198f8db6972fb16f8b142297bd588b2043b23f --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 06:05:07,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 06:05:07,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 06:05:07,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 06:05:07,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 06:05:07,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 06:05:07,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 06:05:07,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 06:05:07,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 06:05:07,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 06:05:07,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 06:05:07,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 06:05:07,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 06:05:07,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 06:05:07,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 06:05:07,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 06:05:07,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 06:05:07,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 06:05:07,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 06:05:07,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 06:05:07,373 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 06:05:07,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 06:05:07,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 06:05:07,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 06:05:07,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 06:05:07,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 06:05:07,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 06:05:07,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 06:05:07,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 06:05:07,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 06:05:07,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 06:05:07,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 06:05:07,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 06:05:07,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 06:05:07,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 06:05:07,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 06:05:07,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 06:05:07,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 06:05:07,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 06:05:07,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 06:05:07,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 06:05:07,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 06:05:07,395 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 06:05:07,424 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 06:05:07,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 06:05:07,425 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 06:05:07,425 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 06:05:07,425 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 06:05:07,426 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 06:05:07,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 06:05:07,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 06:05:07,427 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 06:05:07,427 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 06:05:07,428 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 06:05:07,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 06:05:07,428 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 06:05:07,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 06:05:07,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 06:05:07,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 06:05:07,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 06:05:07,429 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 06:05:07,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 06:05:07,429 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 06:05:07,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 06:05:07,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 06:05:07,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 06:05:07,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 06:05:07,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:05:07,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 06:05:07,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 06:05:07,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 06:05:07,443 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 06:05:07,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 06:05:07,444 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 06:05:07,444 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 06:05:07,444 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 06:05:07,444 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ece4fa184f09e2184919c279a0198f8db6972fb16f8b142297bd588b2043b23f [2022-07-12 06:05:07,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 06:05:07,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 06:05:07,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 06:05:07,690 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 06:05:07,690 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 06:05:07,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec3_product17.cil.c [2022-07-12 06:05:07,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d700503db/df90eeb3a15d416aacdb4b875385b421/FLAG1d91b0fbc [2022-07-12 06:05:08,220 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 06:05:08,222 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec3_product17.cil.c [2022-07-12 06:05:08,237 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d700503db/df90eeb3a15d416aacdb4b875385b421/FLAG1d91b0fbc [2022-07-12 06:05:08,253 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d700503db/df90eeb3a15d416aacdb4b875385b421 [2022-07-12 06:05:08,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 06:05:08,257 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 06:05:08,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 06:05:08,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 06:05:08,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 06:05:08,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:05:08" (1/1) ... [2022-07-12 06:05:08,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18b63f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:05:08, skipping insertion in model container [2022-07-12 06:05:08,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:05:08" (1/1) ... [2022-07-12 06:05:08,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 06:05:08,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 06:05:08,806 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_product17.cil.c[63718,63731] [2022-07-12 06:05:08,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:05:08,818 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 06:05:08,930 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_product17.cil.c[63718,63731] [2022-07-12 06:05:08,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:05:08,961 INFO L208 MainTranslator]: Completed translation [2022-07-12 06:05:08,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:05:08 WrapperNode [2022-07-12 06:05:08,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 06:05:08,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 06:05:08,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 06:05:08,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 06:05:08,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:05:08" (1/1) ... [2022-07-12 06:05:09,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:05:08" (1/1) ... [2022-07-12 06:05:09,063 INFO L137 Inliner]: procedures = 128, calls = 217, calls flagged for inlining = 52, calls inlined = 45, statements flattened = 894 [2022-07-12 06:05:09,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 06:05:09,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 06:05:09,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 06:05:09,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 06:05:09,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:05:08" (1/1) ... [2022-07-12 06:05:09,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:05:08" (1/1) ... [2022-07-12 06:05:09,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:05:08" (1/1) ... [2022-07-12 06:05:09,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:05:08" (1/1) ... [2022-07-12 06:05:09,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:05:08" (1/1) ... [2022-07-12 06:05:09,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:05:08" (1/1) ... [2022-07-12 06:05:09,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:05:08" (1/1) ... [2022-07-12 06:05:09,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 06:05:09,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 06:05:09,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 06:05:09,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 06:05:09,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:05:08" (1/1) ... [2022-07-12 06:05:09,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:05:09,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:05:09,179 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 06:05:09,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 06:05:09,229 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-07-12 06:05:09,230 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-07-12 06:05:09,230 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-07-12 06:05:09,230 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-07-12 06:05:09,230 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2022-07-12 06:05:09,230 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2022-07-12 06:05:09,231 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-12 06:05:09,231 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-12 06:05:09,231 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-12 06:05:09,231 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-12 06:05:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-07-12 06:05:09,232 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-07-12 06:05:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-12 06:05:09,232 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-12 06:05:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-07-12 06:05:09,232 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-07-12 06:05:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-12 06:05:09,233 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-12 06:05:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-12 06:05:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-07-12 06:05:09,233 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-07-12 06:05:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-12 06:05:09,233 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-12 06:05:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 06:05:09,234 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-07-12 06:05:09,234 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-07-12 06:05:09,234 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-07-12 06:05:09,234 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-07-12 06:05:09,234 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-07-12 06:05:09,234 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-07-12 06:05:09,234 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-12 06:05:09,235 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-12 06:05:09,235 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-12 06:05:09,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-12 06:05:09,235 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-12 06:05:09,235 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-12 06:05:09,236 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-12 06:05:09,236 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-12 06:05:09,236 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-07-12 06:05:09,236 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-07-12 06:05:09,236 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-12 06:05:09,236 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-12 06:05:09,236 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-12 06:05:09,237 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-12 06:05:09,237 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-07-12 06:05:09,237 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-07-12 06:05:09,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 06:05:09,237 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-12 06:05:09,237 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-12 06:05:09,237 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-07-12 06:05:09,238 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-07-12 06:05:09,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 06:05:09,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 06:05:09,446 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 06:05:09,448 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 06:05:10,247 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 06:05:10,261 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 06:05:10,261 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 06:05:10,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:05:10 BoogieIcfgContainer [2022-07-12 06:05:10,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 06:05:10,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 06:05:10,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 06:05:10,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 06:05:10,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:05:08" (1/3) ... [2022-07-12 06:05:10,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4818211f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:05:10, skipping insertion in model container [2022-07-12 06:05:10,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:05:08" (2/3) ... [2022-07-12 06:05:10,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4818211f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:05:10, skipping insertion in model container [2022-07-12 06:05:10,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:05:10" (3/3) ... [2022-07-12 06:05:10,273 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product17.cil.c [2022-07-12 06:05:10,288 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 06:05:10,289 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 06:05:10,350 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 06:05:10,356 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7ac3fb3f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6e29cd1c [2022-07-12 06:05:10,356 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 06:05:10,365 INFO L276 IsEmpty]: Start isEmpty. Operand has 367 states, 285 states have (on average 1.5719298245614035) internal successors, (448), 290 states have internal predecessors, (448), 56 states have call successors, (56), 24 states have call predecessors, (56), 24 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2022-07-12 06:05:10,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 06:05:10,390 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:05:10,391 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:05:10,392 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:05:10,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:05:10,396 INFO L85 PathProgramCache]: Analyzing trace with hash -2069563027, now seen corresponding path program 1 times [2022-07-12 06:05:10,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:05:10,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909650762] [2022-07-12 06:05:10,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:05:10,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:05:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:10,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:05:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:10,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:05:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:10,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:05:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:10,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 06:05:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:10,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:05:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:10,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:05:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:10,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:05:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:10,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 06:05:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:10,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 06:05:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:10,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:05:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:10,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 06:05:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:10,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 06:05:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:10,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 06:05:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:10,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 06:05:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:10,940 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-12 06:05:10,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:05:10,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909650762] [2022-07-12 06:05:10,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909650762] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:05:10,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323729279] [2022-07-12 06:05:10,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:05:10,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:05:10,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:05:10,948 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:05:10,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 06:05:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:11,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 1095 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 06:05:11,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:05:11,297 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-12 06:05:11,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:05:11,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323729279] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:05:11,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:05:11,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-07-12 06:05:11,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053657788] [2022-07-12 06:05:11,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:05:11,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 06:05:11,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:05:11,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 06:05:11,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:05:11,329 INFO L87 Difference]: Start difference. First operand has 367 states, 285 states have (on average 1.5719298245614035) internal successors, (448), 290 states have internal predecessors, (448), 56 states have call successors, (56), 24 states have call predecessors, (56), 24 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) Second operand has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 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) [2022-07-12 06:05:11,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:05:11,382 INFO L93 Difference]: Finished difference Result 545 states and 818 transitions. [2022-07-12 06:05:11,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 06:05:11,384 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 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 112 [2022-07-12 06:05:11,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:05:11,399 INFO L225 Difference]: With dead ends: 545 [2022-07-12 06:05:11,399 INFO L226 Difference]: Without dead ends: 359 [2022-07-12 06:05:11,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:05:11,406 INFO L413 NwaCegarLoop]: 554 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, 554 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:05:11,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:05:11,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-07-12 06:05:11,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2022-07-12 06:05:11,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 279 states have (on average 1.5663082437275986) internal successors, (437), 282 states have internal predecessors, (437), 56 states have call successors, (56), 24 states have call predecessors, (56), 23 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2022-07-12 06:05:11,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 546 transitions. [2022-07-12 06:05:11,478 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 546 transitions. Word has length 112 [2022-07-12 06:05:11,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:05:11,482 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 546 transitions. [2022-07-12 06:05:11,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 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) [2022-07-12 06:05:11,483 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 546 transitions. [2022-07-12 06:05:11,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-12 06:05:11,500 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:05:11,500 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:05:11,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 06:05:11,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-12 06:05:11,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:05:11,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:05:11,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1584837283, now seen corresponding path program 1 times [2022-07-12 06:05:11,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:05:11,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734755365] [2022-07-12 06:05:11,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:05:11,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:05:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:11,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:05:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:11,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:05:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:11,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:05:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:11,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 06:05:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:11,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:05:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:11,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:05:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:11,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 06:05:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:11,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 06:05:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:11,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 06:05:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:11,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 06:05:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:11,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 06:05:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:11,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 06:05:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:11,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 06:05:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:11,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 06:05:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:11,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 06:05:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:11,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 06:05:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:11,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 06:05:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:11,962 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:05:11,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:05:11,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734755365] [2022-07-12 06:05:11,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734755365] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:05:11,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780163350] [2022-07-12 06:05:11,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:05:11,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:05:11,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:05:11,965 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:05:11,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 06:05:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:12,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 1177 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 06:05:12,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:05:12,262 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-12 06:05:12,263 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:05:12,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780163350] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:05:12,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:05:12,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-12 06:05:12,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874584282] [2022-07-12 06:05:12,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:05:12,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:05:12,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:05:12,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:05:12,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:05:12,266 INFO L87 Difference]: Start difference. First operand 359 states and 546 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) [2022-07-12 06:05:12,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:05:12,352 INFO L93 Difference]: Finished difference Result 534 states and 792 transitions. [2022-07-12 06:05:12,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:05:12,354 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 [2022-07-12 06:05:12,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:05:12,359 INFO L225 Difference]: With dead ends: 534 [2022-07-12 06:05:12,359 INFO L226 Difference]: Without dead ends: 362 [2022-07-12 06:05:12,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:05:12,361 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 1 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:05:12,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1086 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:05:12,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-07-12 06:05:12,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 361. [2022-07-12 06:05:12,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 281 states have (on average 1.5622775800711743) internal successors, (439), 284 states have internal predecessors, (439), 56 states have call successors, (56), 24 states have call predecessors, (56), 23 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2022-07-12 06:05:12,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 548 transitions. [2022-07-12 06:05:12,393 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 548 transitions. Word has length 132 [2022-07-12 06:05:12,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:05:12,394 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 548 transitions. [2022-07-12 06:05:12,394 INFO L496 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) [2022-07-12 06:05:12,394 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 548 transitions. [2022-07-12 06:05:12,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-12 06:05:12,399 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:05:12,399 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:05:12,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-12 06:05:12,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-12 06:05:12,616 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:05:12,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:05:12,616 INFO L85 PathProgramCache]: Analyzing trace with hash 365183500, now seen corresponding path program 1 times [2022-07-12 06:05:12,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:05:12,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903255589] [2022-07-12 06:05:12,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:05:12,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:05:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:12,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:05:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:12,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:05:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:12,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:05:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:12,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 06:05:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:12,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:05:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:12,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:05:12,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:12,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 06:05:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:12,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 06:05:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:12,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 06:05:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:12,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 06:05:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:12,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 06:05:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:12,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 06:05:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:12,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 06:05:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:12,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 06:05:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:12,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 06:05:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:12,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 06:05:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:12,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-12 06:05:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:12,773 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 06:05:12,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:05:12,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903255589] [2022-07-12 06:05:12,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903255589] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:05:12,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721955225] [2022-07-12 06:05:12,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:05:12,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:05:12,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:05:12,775 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:05:12,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 06:05:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:13,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 1191 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 06:05:13,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:05:13,111 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-12 06:05:13,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:05:13,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721955225] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:05:13,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:05:13,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-12 06:05:13,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935298350] [2022-07-12 06:05:13,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:05:13,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:05:13,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:05:13,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:05:13,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:05:13,115 INFO L87 Difference]: Start difference. First operand 361 states and 548 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2022-07-12 06:05:13,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:05:13,162 INFO L93 Difference]: Finished difference Result 765 states and 1180 transitions. [2022-07-12 06:05:13,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:05:13,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 138 [2022-07-12 06:05:13,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:05:13,171 INFO L225 Difference]: With dead ends: 765 [2022-07-12 06:05:13,171 INFO L226 Difference]: Without dead ends: 431 [2022-07-12 06:05:13,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:05:13,176 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 126 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:05:13,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1072 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:05:13,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-07-12 06:05:13,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 423. [2022-07-12 06:05:13,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 329 states have (on average 1.580547112462006) internal successors, (520), 332 states have internal predecessors, (520), 70 states have call successors, (70), 24 states have call predecessors, (70), 23 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2022-07-12 06:05:13,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 657 transitions. [2022-07-12 06:05:13,226 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 657 transitions. Word has length 138 [2022-07-12 06:05:13,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:05:13,226 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 657 transitions. [2022-07-12 06:05:13,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2022-07-12 06:05:13,227 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 657 transitions. [2022-07-12 06:05:13,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-12 06:05:13,230 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:05:13,230 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:05:13,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 06:05:13,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:05:13,454 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:05:13,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:05:13,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1505396304, now seen corresponding path program 1 times [2022-07-12 06:05:13,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:05:13,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088366185] [2022-07-12 06:05:13,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:05:13,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:05:13,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:13,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:05:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:13,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:05:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:13,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:05:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:13,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 06:05:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:13,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:05:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:13,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:05:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:13,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 06:05:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:13,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 06:05:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:13,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:05:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:13,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 06:05:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:13,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:05:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:13,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 06:05:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:13,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 06:05:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:13,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 06:05:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:13,588 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 06:05:13,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:05:13,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088366185] [2022-07-12 06:05:13,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088366185] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:05:13,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880802453] [2022-07-12 06:05:13,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:05:13,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:05:13,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:05:13,591 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:05:13,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 06:05:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:13,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 1117 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 06:05:13,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:05:13,915 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-12 06:05:13,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:05:13,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880802453] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:05:13,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:05:13,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-07-12 06:05:13,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658085585] [2022-07-12 06:05:13,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:05:13,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:05:13,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:05:13,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:05:13,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 06:05:13,919 INFO L87 Difference]: Start difference. First operand 423 states and 657 transitions. Second operand has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 06:05:13,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:05:13,994 INFO L93 Difference]: Finished difference Result 837 states and 1304 transitions. [2022-07-12 06:05:13,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:05:13,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 120 [2022-07-12 06:05:13,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:05:13,998 INFO L225 Difference]: With dead ends: 837 [2022-07-12 06:05:13,998 INFO L226 Difference]: Without dead ends: 425 [2022-07-12 06:05:13,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-12 06:05:14,003 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 144 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 1981 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:05:14,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 1981 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:05:14,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-07-12 06:05:14,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2022-07-12 06:05:14,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 330 states have (on average 1.5787878787878789) internal successors, (521), 334 states have internal predecessors, (521), 70 states have call successors, (70), 24 states have call predecessors, (70), 24 states have return successors, (69), 66 states have call predecessors, (69), 67 states have call successors, (69) [2022-07-12 06:05:14,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 660 transitions. [2022-07-12 06:05:14,034 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 660 transitions. Word has length 120 [2022-07-12 06:05:14,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:05:14,034 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 660 transitions. [2022-07-12 06:05:14,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 06:05:14,035 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 660 transitions. [2022-07-12 06:05:14,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-12 06:05:14,039 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:05:14,039 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-07-12 06:05:14,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-12 06:05:14,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:05:14,247 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:05:14,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:05:14,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1946472129, now seen corresponding path program 1 times [2022-07-12 06:05:14,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:05:14,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135028427] [2022-07-12 06:05:14,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:05:14,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:05:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:14,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:05:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:14,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:05:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:14,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:05:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:14,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:05:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:14,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 06:05:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:14,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 06:05:14,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:14,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 06:05:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:14,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 06:05:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:14,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 06:05:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:14,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 06:05:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:14,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 06:05:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:14,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 06:05:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:14,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 06:05:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:14,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 06:05:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:14,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 06:05:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:14,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 06:05:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:14,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 06:05:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:14,384 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 06:05:14,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:05:14,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135028427] [2022-07-12 06:05:14,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135028427] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:05:14,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996271152] [2022-07-12 06:05:14,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:05:14,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:05:14,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:05:14,386 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:05:14,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 06:05:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:14,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 1199 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 06:05:14,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:05:14,912 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-12 06:05:14,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:05:14,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996271152] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:05:14,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:05:14,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-12 06:05:14,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230939494] [2022-07-12 06:05:14,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:05:14,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:05:14,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:05:14,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:05:14,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-12 06:05:14,918 INFO L87 Difference]: Start difference. First operand 425 states and 660 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-12 06:05:15,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:05:15,022 INFO L93 Difference]: Finished difference Result 839 states and 1309 transitions. [2022-07-12 06:05:15,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:05:15,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 140 [2022-07-12 06:05:15,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:05:15,027 INFO L225 Difference]: With dead ends: 839 [2022-07-12 06:05:15,027 INFO L226 Difference]: Without dead ends: 427 [2022-07-12 06:05:15,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-12 06:05:15,029 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 143 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:05:15,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 1970 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:05:15,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-07-12 06:05:15,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2022-07-12 06:05:15,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 331 states have (on average 1.5770392749244713) internal successors, (522), 336 states have internal predecessors, (522), 70 states have call successors, (70), 24 states have call predecessors, (70), 25 states have return successors, (74), 66 states have call predecessors, (74), 67 states have call successors, (74) [2022-07-12 06:05:15,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 666 transitions. [2022-07-12 06:05:15,071 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 666 transitions. Word has length 140 [2022-07-12 06:05:15,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:05:15,071 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 666 transitions. [2022-07-12 06:05:15,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-12 06:05:15,071 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 666 transitions. [2022-07-12 06:05:15,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-12 06:05:15,074 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:05:15,074 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:05:15,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-12 06:05:15,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:05:15,290 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:05:15,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:05:15,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1232659914, now seen corresponding path program 1 times [2022-07-12 06:05:15,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:05:15,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067986477] [2022-07-12 06:05:15,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:05:15,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:05:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:15,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:05:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:15,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:05:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:15,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:05:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:15,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:05:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:15,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:05:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:15,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 06:05:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:15,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 06:05:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:15,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:05:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:15,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:05:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:15,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 06:05:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:15,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 06:05:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:15,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 06:05:15,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:15,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 06:05:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:15,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 06:05:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:15,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 06:05:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:15,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 06:05:15,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:15,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 06:05:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:15,579 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 06:05:15,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:05:15,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067986477] [2022-07-12 06:05:15,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067986477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:05:15,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:05:15,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 06:05:15,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242942561] [2022-07-12 06:05:15,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:05:15,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 06:05:15,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:05:15,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 06:05:15,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:05:15,582 INFO L87 Difference]: Start difference. First operand 427 states and 666 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) [2022-07-12 06:05:18,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:05:18,138 INFO L93 Difference]: Finished difference Result 925 states and 1461 transitions. [2022-07-12 06:05:18,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 06:05:18,139 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 [2022-07-12 06:05:18,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:05:18,143 INFO L225 Difference]: With dead ends: 925 [2022-07-12 06:05:18,144 INFO L226 Difference]: Without dead ends: 521 [2022-07-12 06:05:18,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 06:05:18,146 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 1313 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 1859 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1333 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 2318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 1859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 06:05:18,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1333 Valid, 1515 Invalid, 2318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 1859 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-12 06:05:18,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-07-12 06:05:18,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 427. [2022-07-12 06:05:18,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 331 states have (on average 1.5770392749244713) internal successors, (522), 336 states have internal predecessors, (522), 70 states have call successors, (70), 24 states have call predecessors, (70), 25 states have return successors, (73), 66 states have call predecessors, (73), 67 states have call successors, (73) [2022-07-12 06:05:18,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 665 transitions. [2022-07-12 06:05:18,185 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 665 transitions. Word has length 141 [2022-07-12 06:05:18,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:05:18,187 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 665 transitions. [2022-07-12 06:05:18,187 INFO L496 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) [2022-07-12 06:05:18,188 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 665 transitions. [2022-07-12 06:05:18,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-12 06:05:18,190 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:05:18,190 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 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] [2022-07-12 06:05:18,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 06:05:18,191 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:05:18,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:05:18,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1823488409, now seen corresponding path program 2 times [2022-07-12 06:05:18,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:05:18,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823034758] [2022-07-12 06:05:18,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:05:18,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:05:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:18,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:05:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:18,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:05:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:18,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:05:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:18,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:05:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:18,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:05:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:18,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 06:05:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:18,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 06:05:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:18,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 06:05:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:18,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:05:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:18,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 06:05:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:18,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:05:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:18,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 06:05:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:18,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 06:05:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:18,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 06:05:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:18,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 06:05:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:18,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 06:05:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:18,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 06:05:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:18,394 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 06:05:18,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:05:18,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823034758] [2022-07-12 06:05:18,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823034758] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:05:18,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:05:18,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 06:05:18,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711421576] [2022-07-12 06:05:18,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:05:18,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 06:05:18,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:05:18,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 06:05:18,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:05:18,397 INFO L87 Difference]: Start difference. First operand 427 states and 665 transitions. Second operand has 9 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 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) [2022-07-12 06:05:20,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:05:20,752 INFO L93 Difference]: Finished difference Result 927 states and 1464 transitions. [2022-07-12 06:05:20,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 06:05:20,752 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 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 142 [2022-07-12 06:05:20,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:05:20,757 INFO L225 Difference]: With dead ends: 927 [2022-07-12 06:05:20,757 INFO L226 Difference]: Without dead ends: 523 [2022-07-12 06:05:20,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 06:05:20,760 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 1308 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 1870 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1329 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 2335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 1870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 06:05:20,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1329 Valid, 1520 Invalid, 2335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 1870 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-12 06:05:20,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-07-12 06:05:20,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 429. [2022-07-12 06:05:20,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 332 states have (on average 1.5753012048192772) internal successors, (523), 338 states have internal predecessors, (523), 70 states have call successors, (70), 24 states have call predecessors, (70), 26 states have return successors, (75), 66 states have call predecessors, (75), 67 states have call successors, (75) [2022-07-12 06:05:20,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 668 transitions. [2022-07-12 06:05:20,809 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 668 transitions. Word has length 142 [2022-07-12 06:05:20,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:05:20,809 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 668 transitions. [2022-07-12 06:05:20,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 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) [2022-07-12 06:05:20,809 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 668 transitions. [2022-07-12 06:05:20,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 06:05:20,813 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:05:20,813 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:05:20,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 06:05:20,813 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:05:20,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:05:20,814 INFO L85 PathProgramCache]: Analyzing trace with hash 659875555, now seen corresponding path program 1 times [2022-07-12 06:05:20,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:05:20,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069409712] [2022-07-12 06:05:20,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:05:20,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:05:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:20,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:05:20,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:20,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:05:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:20,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:05:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:20,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:05:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:20,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:05:20,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:20,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:05:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:20,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 06:05:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:20,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 06:05:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:20,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 06:05:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:20,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 06:05:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:20,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 06:05:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:20,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 06:05:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:20,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 06:05:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:20,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 06:05:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:20,963 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 06:05:20,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:05:20,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069409712] [2022-07-12 06:05:20,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069409712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:05:20,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:05:20,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 06:05:20,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969330630] [2022-07-12 06:05:20,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:05:20,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 06:05:20,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:05:20,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 06:05:20,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-12 06:05:20,966 INFO L87 Difference]: Start difference. First operand 429 states and 668 transitions. Second operand has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 8 states have internal predecessors, (84), 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) [2022-07-12 06:05:23,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:05:23,379 INFO L93 Difference]: Finished difference Result 925 states and 1459 transitions. [2022-07-12 06:05:23,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 06:05:23,380 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 8 states have internal predecessors, (84), 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 124 [2022-07-12 06:05:23,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:05:23,383 INFO L225 Difference]: With dead ends: 925 [2022-07-12 06:05:23,383 INFO L226 Difference]: Without dead ends: 523 [2022-07-12 06:05:23,385 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:05:23,385 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 1440 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 3383 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 3910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 3383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:05:23,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1440 Valid, 1860 Invalid, 3910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 3383 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 06:05:23,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-07-12 06:05:23,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 429. [2022-07-12 06:05:23,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 332 states have (on average 1.5753012048192772) internal successors, (523), 338 states have internal predecessors, (523), 70 states have call successors, (70), 24 states have call predecessors, (70), 26 states have return successors, (74), 66 states have call predecessors, (74), 67 states have call successors, (74) [2022-07-12 06:05:23,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 667 transitions. [2022-07-12 06:05:23,411 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 667 transitions. Word has length 124 [2022-07-12 06:05:23,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:05:23,412 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 667 transitions. [2022-07-12 06:05:23,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 8 states have internal predecessors, (84), 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) [2022-07-12 06:05:23,412 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 667 transitions. [2022-07-12 06:05:23,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-12 06:05:23,414 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:05:23,414 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:05:23,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 06:05:23,415 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:05:23,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:05:23,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1460343384, now seen corresponding path program 2 times [2022-07-12 06:05:23,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:05:23,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669448980] [2022-07-12 06:05:23,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:05:23,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:05:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:23,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:05:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:23,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:05:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:23,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:05:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:23,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:05:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:23,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:05:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:23,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:05:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:23,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 06:05:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:23,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 06:05:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:23,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 06:05:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:23,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 06:05:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:23,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 06:05:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:23,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 06:05:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:23,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 06:05:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:23,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 06:05:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:23,614 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 06:05:23,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:05:23,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669448980] [2022-07-12 06:05:23,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669448980] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:05:23,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:05:23,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 06:05:23,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705604431] [2022-07-12 06:05:23,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:05:23,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 06:05:23,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:05:23,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 06:05:23,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-12 06:05:23,617 INFO L87 Difference]: Start difference. First operand 429 states and 667 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) [2022-07-12 06:05:26,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:05:26,526 INFO L93 Difference]: Finished difference Result 927 states and 1465 transitions. [2022-07-12 06:05:26,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 06:05:26,527 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 [2022-07-12 06:05:26,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:05:26,530 INFO L225 Difference]: With dead ends: 927 [2022-07-12 06:05:26,530 INFO L226 Difference]: Without dead ends: 525 [2022-07-12 06:05:26,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-12 06:05:26,548 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 1425 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 3457 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1425 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 3967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 3457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 06:05:26,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1425 Valid, 1867 Invalid, 3967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 3457 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 06:05:26,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-07-12 06:05:26,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 431. [2022-07-12 06:05:26,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 333 states have (on average 1.5735735735735736) internal successors, (524), 340 states have internal predecessors, (524), 70 states have call successors, (70), 24 states have call predecessors, (70), 27 states have return successors, (79), 66 states have call predecessors, (79), 67 states have call successors, (79) [2022-07-12 06:05:26,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 673 transitions. [2022-07-12 06:05:26,605 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 673 transitions. Word has length 125 [2022-07-12 06:05:26,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:05:26,606 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 673 transitions. [2022-07-12 06:05:26,606 INFO L496 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) [2022-07-12 06:05:26,607 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 673 transitions. [2022-07-12 06:05:26,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 06:05:26,610 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:05:26,610 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:05:26,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 06:05:26,610 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:05:26,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:05:26,611 INFO L85 PathProgramCache]: Analyzing trace with hash -569808640, now seen corresponding path program 1 times [2022-07-12 06:05:26,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:05:26,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870542335] [2022-07-12 06:05:26,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:05:26,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:05:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:26,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:05:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:26,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:05:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:26,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:05:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:26,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:05:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:26,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:05:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:26,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:05:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:26,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 06:05:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:26,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 06:05:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:26,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 06:05:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:26,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 06:05:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:26,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 06:05:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:26,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 06:05:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:26,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 06:05:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:26,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 06:05:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:26,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 06:05:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:26,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 06:05:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:26,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-12 06:05:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:26,832 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 06:05:26,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:05:26,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870542335] [2022-07-12 06:05:26,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870542335] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:05:26,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10167136] [2022-07-12 06:05:26,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:05:26,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:05:26,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:05:26,847 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:05:26,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 06:05:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:27,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 06:05:27,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:05:27,302 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 06:05:27,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:05:27,421 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 06:05:27,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10167136] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:05:27,424 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:05:27,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2022-07-12 06:05:27,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562187351] [2022-07-12 06:05:27,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:05:27,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 06:05:27,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:05:27,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 06:05:27,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-12 06:05:27,430 INFO L87 Difference]: Start difference. First operand 431 states and 673 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) [2022-07-12 06:05:29,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:05:29,627 INFO L93 Difference]: Finished difference Result 1114 states and 1834 transitions. [2022-07-12 06:05:29,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 06:05:29,628 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 [2022-07-12 06:05:29,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:05:29,634 INFO L225 Difference]: With dead ends: 1114 [2022-07-12 06:05:29,651 INFO L226 Difference]: Without dead ends: 942 [2022-07-12 06:05:29,653 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:05:29,654 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 1642 mSDsluCounter, 1437 mSDsCounter, 0 mSdLazyCounter, 1765 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 2429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 1765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:05:29,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1696 Valid, 2113 Invalid, 2429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 1765 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 06:05:29,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2022-07-12 06:05:29,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 824. [2022-07-12 06:05:29,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 647 states have (on average 1.6336939721792891) internal successors, (1057), 654 states have internal predecessors, (1057), 149 states have call successors, (149), 24 states have call predecessors, (149), 27 states have return successors, (168), 145 states have call predecessors, (168), 146 states have call successors, (168) [2022-07-12 06:05:29,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1374 transitions. [2022-07-12 06:05:29,737 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1374 transitions. Word has length 145 [2022-07-12 06:05:29,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:05:29,737 INFO L495 AbstractCegarLoop]: Abstraction has 824 states and 1374 transitions. [2022-07-12 06:05:29,738 INFO L496 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) [2022-07-12 06:05:29,738 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1374 transitions. [2022-07-12 06:05:29,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-12 06:05:29,742 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:05:29,742 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:05:29,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 06:05:29,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:05:29,966 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:05:29,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:05:29,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1085753151, now seen corresponding path program 1 times [2022-07-12 06:05:29,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:05:29,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086902863] [2022-07-12 06:05:29,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:05:29,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:05:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:30,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:05:30,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:30,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:05:30,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:30,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:05:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:30,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:05:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:30,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:05:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:30,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:05:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:30,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:05:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:30,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 06:05:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:30,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 06:05:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:30,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 06:05:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:30,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 06:05:30,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:30,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 06:05:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:30,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 06:05:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:30,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 06:05:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:30,091 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:05:30,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:05:30,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086902863] [2022-07-12 06:05:30,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086902863] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:05:30,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:05:30,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:05:30,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287928750] [2022-07-12 06:05:30,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:05:30,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:05:30,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:05:30,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:05:30,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:05:30,094 INFO L87 Difference]: Start difference. First operand 824 states and 1374 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (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) [2022-07-12 06:05:31,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:05:31,551 INFO L93 Difference]: Finished difference Result 2072 states and 3539 transitions. [2022-07-12 06:05:31,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:05:31,552 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (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 132 [2022-07-12 06:05:31,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:05:31,582 INFO L225 Difference]: With dead ends: 2072 [2022-07-12 06:05:31,585 INFO L226 Difference]: Without dead ends: 1316 [2022-07-12 06:05:31,588 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:05:31,591 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 1305 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:05:31,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1324 Valid, 1363 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 06:05:31,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2022-07-12 06:05:31,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1214. [2022-07-12 06:05:31,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 958 states have (on average 1.6461377870563674) internal successors, (1577), 965 states have internal predecessors, (1577), 228 states have call successors, (228), 24 states have call predecessors, (228), 27 states have return successors, (257), 224 states have call predecessors, (257), 225 states have call successors, (257) [2022-07-12 06:05:31,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 2062 transitions. [2022-07-12 06:05:31,744 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 2062 transitions. Word has length 132 [2022-07-12 06:05:31,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:05:31,744 INFO L495 AbstractCegarLoop]: Abstraction has 1214 states and 2062 transitions. [2022-07-12 06:05:31,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (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) [2022-07-12 06:05:31,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 2062 transitions. [2022-07-12 06:05:31,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-12 06:05:31,767 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:05:31,767 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:05:31,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 06:05:31,768 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:05:31,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:05:31,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1025991844, now seen corresponding path program 1 times [2022-07-12 06:05:31,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:05:31,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894351444] [2022-07-12 06:05:31,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:05:31,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:05:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:31,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:05:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:31,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:05:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:31,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:05:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:31,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:05:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:31,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:05:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:31,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:05:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:31,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:05:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:31,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:05:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:31,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 06:05:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:31,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 06:05:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:31,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 06:05:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:31,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 06:05:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:31,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 06:05:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:31,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 06:05:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:31,938 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:05:31,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:05:31,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894351444] [2022-07-12 06:05:31,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894351444] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:05:31,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:05:31,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:05:31,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633362143] [2022-07-12 06:05:31,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:05:31,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:05:31,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:05:31,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:05:31,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:05:31,953 INFO L87 Difference]: Start difference. First operand 1214 states and 2062 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (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) [2022-07-12 06:05:33,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:05:33,381 INFO L93 Difference]: Finished difference Result 3021 states and 5213 transitions. [2022-07-12 06:05:33,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:05:33,382 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (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 133 [2022-07-12 06:05:33,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:05:33,394 INFO L225 Difference]: With dead ends: 3021 [2022-07-12 06:05:33,394 INFO L226 Difference]: Without dead ends: 1928 [2022-07-12 06:05:33,399 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:05:33,400 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 1297 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:05:33,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 1353 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 06:05:33,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2022-07-12 06:05:33,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1826. [2022-07-12 06:05:33,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1826 states, 1451 states have (on average 1.6540317022742936) internal successors, (2400), 1458 states have internal predecessors, (2400), 347 states have call successors, (347), 24 states have call predecessors, (347), 27 states have return successors, (376), 343 states have call predecessors, (376), 344 states have call successors, (376) [2022-07-12 06:05:33,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 3123 transitions. [2022-07-12 06:05:33,576 INFO L78 Accepts]: Start accepts. Automaton has 1826 states and 3123 transitions. Word has length 133 [2022-07-12 06:05:33,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:05:33,576 INFO L495 AbstractCegarLoop]: Abstraction has 1826 states and 3123 transitions. [2022-07-12 06:05:33,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (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) [2022-07-12 06:05:33,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1826 states and 3123 transitions. [2022-07-12 06:05:33,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-12 06:05:33,586 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:05:33,586 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:05:33,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 06:05:33,586 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:05:33,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:05:33,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1627588351, now seen corresponding path program 1 times [2022-07-12 06:05:33,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:05:33,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008306315] [2022-07-12 06:05:33,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:05:33,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:05:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:33,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:05:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:33,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:05:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:33,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:05:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:33,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:05:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:33,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:05:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:33,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:05:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:33,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 06:05:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:33,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 06:05:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:33,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 06:05:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:33,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 06:05:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:33,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 06:05:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:33,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 06:05:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:33,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 06:05:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:33,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 06:05:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:33,702 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:05:33,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:05:33,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008306315] [2022-07-12 06:05:33,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008306315] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:05:33,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:05:33,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:05:33,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534451471] [2022-07-12 06:05:33,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:05:33,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:05:33,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:05:33,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:05:33,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:05:33,705 INFO L87 Difference]: Start difference. First operand 1826 states and 3123 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) [2022-07-12 06:05:35,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:05:35,207 INFO L93 Difference]: Finished difference Result 4446 states and 7747 transitions. [2022-07-12 06:05:35,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:05:35,209 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 [2022-07-12 06:05:35,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:05:35,248 INFO L225 Difference]: With dead ends: 4446 [2022-07-12 06:05:35,255 INFO L226 Difference]: Without dead ends: 2866 [2022-07-12 06:05:35,274 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:05:35,275 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 1301 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:05:35,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1320 Valid, 1339 Invalid, 1451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 06:05:35,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2022-07-12 06:05:35,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 2764. [2022-07-12 06:05:35,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2227 states have (on average 1.6605298607992816) internal successors, (3698), 2234 states have internal predecessors, (3698), 509 states have call successors, (509), 24 states have call predecessors, (509), 27 states have return successors, (554), 505 states have call predecessors, (554), 506 states have call successors, (554) [2022-07-12 06:05:35,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 4761 transitions. [2022-07-12 06:05:35,663 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 4761 transitions. Word has length 134 [2022-07-12 06:05:35,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:05:35,664 INFO L495 AbstractCegarLoop]: Abstraction has 2764 states and 4761 transitions. [2022-07-12 06:05:35,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (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) [2022-07-12 06:05:35,664 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 4761 transitions. [2022-07-12 06:05:35,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-12 06:05:35,685 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:05:35,686 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:05:35,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 06:05:35,686 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:05:35,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:05:35,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1573696069, now seen corresponding path program 1 times [2022-07-12 06:05:35,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:05:35,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235764639] [2022-07-12 06:05:35,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:05:35,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:05:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:35,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:05:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:35,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:05:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:35,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:05:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:35,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:05:35,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:35,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:05:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:35,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:05:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:35,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 06:05:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:35,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:05:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:35,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 06:05:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:35,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 06:05:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:35,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 06:05:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:35,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 06:05:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:35,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 06:05:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:35,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 06:05:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:35,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 06:05:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:35,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 06:05:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:35,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 06:05:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:35,860 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 06:05:35,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:05:35,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235764639] [2022-07-12 06:05:35,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235764639] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:05:35,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:05:35,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:05:35,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023435470] [2022-07-12 06:05:35,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:05:35,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:05:35,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:05:35,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:05:35,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:05:35,880 INFO L87 Difference]: Start difference. First operand 2764 states and 4761 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) [2022-07-12 06:05:37,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:05:37,345 INFO L93 Difference]: Finished difference Result 6695 states and 11756 transitions. [2022-07-12 06:05:37,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:05:37,351 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 [2022-07-12 06:05:37,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:05:37,402 INFO L225 Difference]: With dead ends: 6695 [2022-07-12 06:05:37,403 INFO L226 Difference]: Without dead ends: 4381 [2022-07-12 06:05:37,410 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:05:37,423 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 1298 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:05:37,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1317 Valid, 1336 Invalid, 1452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 06:05:37,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4381 states. [2022-07-12 06:05:37,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4381 to 4279. [2022-07-12 06:05:37,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4279 states, 3497 states have (on average 1.6651415498999143) internal successors, (5823), 3504 states have internal predecessors, (5823), 754 states have call successors, (754), 24 states have call predecessors, (754), 27 states have return successors, (825), 750 states have call predecessors, (825), 751 states have call successors, (825) [2022-07-12 06:05:37,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4279 states to 4279 states and 7402 transitions. [2022-07-12 06:05:37,799 INFO L78 Accepts]: Start accepts. Automaton has 4279 states and 7402 transitions. Word has length 154 [2022-07-12 06:05:37,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:05:37,799 INFO L495 AbstractCegarLoop]: Abstraction has 4279 states and 7402 transitions. [2022-07-12 06:05:37,799 INFO L496 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) [2022-07-12 06:05:37,800 INFO L276 IsEmpty]: Start isEmpty. Operand 4279 states and 7402 transitions. [2022-07-12 06:05:37,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-12 06:05:37,831 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:05:37,832 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:05:37,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 06:05:37,848 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:05:37,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:05:37,848 INFO L85 PathProgramCache]: Analyzing trace with hash -523716637, now seen corresponding path program 1 times [2022-07-12 06:05:37,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:05:37,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322083650] [2022-07-12 06:05:37,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:05:37,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:05:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:37,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:05:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:37,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:05:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:37,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:05:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:37,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:05:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:37,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:05:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:37,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:05:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:37,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 06:05:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:37,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:05:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:37,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 06:05:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:37,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 06:05:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:37,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 06:05:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:37,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 06:05:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:37,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 06:05:37,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:37,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 06:05:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:38,001 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:05:38,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:05:38,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322083650] [2022-07-12 06:05:38,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322083650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:05:38,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:05:38,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:05:38,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805631589] [2022-07-12 06:05:38,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:05:38,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:05:38,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:05:38,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:05:38,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:05:38,004 INFO L87 Difference]: Start difference. First operand 4279 states and 7402 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-07-12 06:05:39,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:05:39,934 INFO L93 Difference]: Finished difference Result 10711 states and 18868 transitions. [2022-07-12 06:05:39,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:05:39,935 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 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 136 [2022-07-12 06:05:39,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:05:40,035 INFO L225 Difference]: With dead ends: 10711 [2022-07-12 06:05:40,035 INFO L226 Difference]: Without dead ends: 7114 [2022-07-12 06:05:40,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-12 06:05:40,080 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 1290 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 520 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 520 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 06:05:40,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1308 Valid, 1368 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [520 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 06:05:40,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7114 states. [2022-07-12 06:05:40,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7114 to 7012. [2022-07-12 06:05:40,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7012 states, 5737 states have (on average 1.66079832665156) internal successors, (9528), 5744 states have internal predecessors, (9528), 1247 states have call successors, (1247), 24 states have call predecessors, (1247), 27 states have return successors, (1362), 1243 states have call predecessors, (1362), 1244 states have call successors, (1362) [2022-07-12 06:05:40,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7012 states to 7012 states and 12137 transitions. [2022-07-12 06:05:40,908 INFO L78 Accepts]: Start accepts. Automaton has 7012 states and 12137 transitions. Word has length 136 [2022-07-12 06:05:40,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:05:40,908 INFO L495 AbstractCegarLoop]: Abstraction has 7012 states and 12137 transitions. [2022-07-12 06:05:40,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-07-12 06:05:40,909 INFO L276 IsEmpty]: Start isEmpty. Operand 7012 states and 12137 transitions. [2022-07-12 06:05:40,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-12 06:05:40,933 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:05:40,934 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:05:40,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 06:05:40,934 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:05:40,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:05:40,935 INFO L85 PathProgramCache]: Analyzing trace with hash 290885919, now seen corresponding path program 1 times [2022-07-12 06:05:40,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:05:40,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507425567] [2022-07-12 06:05:40,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:05:40,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:05:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:40,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:05:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:40,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:05:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:40,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:05:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:41,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:05:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:41,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:05:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:41,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:05:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:41,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 06:05:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:41,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 06:05:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:41,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:05:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:41,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 06:05:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:41,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 06:05:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:41,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 06:05:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:41,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 06:05:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:41,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 06:05:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:41,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-12 06:05:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:41,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-12 06:05:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:41,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-12 06:05:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:41,047 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 06:05:41,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:05:41,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507425567] [2022-07-12 06:05:41,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507425567] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:05:41,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:05:41,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:05:41,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989313845] [2022-07-12 06:05:41,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:05:41,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:05:41,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:05:41,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:05:41,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:05:41,050 INFO L87 Difference]: Start difference. First operand 7012 states and 12137 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 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) [2022-07-12 06:05:43,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:05:43,168 INFO L93 Difference]: Finished difference Result 17851 states and 31440 transitions. [2022-07-12 06:05:43,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:05:43,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 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 156 [2022-07-12 06:05:43,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:05:43,297 INFO L225 Difference]: With dead ends: 17851 [2022-07-12 06:05:43,298 INFO L226 Difference]: Without dead ends: 11898 [2022-07-12 06:05:43,346 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:05:43,347 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 1301 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 06:05:43,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1320 Valid, 1341 Invalid, 1465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 06:05:43,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11898 states. [2022-07-12 06:05:44,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11898 to 11796. [2022-07-12 06:05:44,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11796 states, 9699 states have (on average 1.660583565316012) internal successors, (16106), 9706 states have internal predecessors, (16106), 2069 states have call successors, (2069), 24 states have call predecessors, (2069), 27 states have return successors, (2262), 2065 states have call predecessors, (2262), 2066 states have call successors, (2262) [2022-07-12 06:05:44,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11796 states to 11796 states and 20437 transitions. [2022-07-12 06:05:44,506 INFO L78 Accepts]: Start accepts. Automaton has 11796 states and 20437 transitions. Word has length 156 [2022-07-12 06:05:44,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:05:44,506 INFO L495 AbstractCegarLoop]: Abstraction has 11796 states and 20437 transitions. [2022-07-12 06:05:44,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 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) [2022-07-12 06:05:44,507 INFO L276 IsEmpty]: Start isEmpty. Operand 11796 states and 20437 transitions. [2022-07-12 06:05:44,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-12 06:05:44,546 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:05:44,546 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:05:44,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 06:05:44,546 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:05:44,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:05:44,547 INFO L85 PathProgramCache]: Analyzing trace with hash 458487873, now seen corresponding path program 1 times [2022-07-12 06:05:44,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:05:44,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583197604] [2022-07-12 06:05:44,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:05:44,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:05:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:44,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:05:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:44,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:05:44,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:44,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:05:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:44,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:05:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:44,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:05:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:44,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:05:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:44,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:05:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:44,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 06:05:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:44,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:05:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:44,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 06:05:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:44,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 06:05:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:44,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 06:05:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:44,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 06:05:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:44,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-12 06:05:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:44,697 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:05:44,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:05:44,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583197604] [2022-07-12 06:05:44,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583197604] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:05:44,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:05:44,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:05:44,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696898941] [2022-07-12 06:05:44,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:05:44,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:05:44,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:05:44,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:05:44,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:05:44,701 INFO L87 Difference]: Start difference. First operand 11796 states and 20437 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 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) [2022-07-12 06:05:47,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:05:47,114 INFO L93 Difference]: Finished difference Result 28284 states and 49565 transitions. [2022-07-12 06:05:47,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:05:47,114 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 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 138 [2022-07-12 06:05:47,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:05:47,261 INFO L225 Difference]: With dead ends: 28284 [2022-07-12 06:05:47,262 INFO L226 Difference]: Without dead ends: 18491 [2022-07-12 06:05:47,331 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:05:47,332 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 1296 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 06:05:47,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1314 Valid, 1315 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 06:05:47,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18491 states. [2022-07-12 06:05:48,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18491 to 18389. [2022-07-12 06:05:48,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18389 states, 15089 states have (on average 1.6350984160646829) internal successors, (24672), 15096 states have internal predecessors, (24672), 3272 states have call successors, (3272), 24 states have call predecessors, (3272), 27 states have return successors, (3609), 3268 states have call predecessors, (3609), 3269 states have call successors, (3609) [2022-07-12 06:05:48,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18389 states to 18389 states and 31553 transitions. [2022-07-12 06:05:48,830 INFO L78 Accepts]: Start accepts. Automaton has 18389 states and 31553 transitions. Word has length 138 [2022-07-12 06:05:48,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:05:48,831 INFO L495 AbstractCegarLoop]: Abstraction has 18389 states and 31553 transitions. [2022-07-12 06:05:48,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 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) [2022-07-12 06:05:48,831 INFO L276 IsEmpty]: Start isEmpty. Operand 18389 states and 31553 transitions. [2022-07-12 06:05:48,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-12 06:05:48,863 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:05:48,863 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:05:48,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 06:05:48,864 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:05:48,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:05:48,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1608445602, now seen corresponding path program 1 times [2022-07-12 06:05:48,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:05:48,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822497073] [2022-07-12 06:05:48,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:05:48,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:05:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:48,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:05:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:48,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:05:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:48,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:05:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:48,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:05:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:48,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:05:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:48,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:05:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:48,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 06:05:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:48,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 06:05:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:48,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 06:05:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:48,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 06:05:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:48,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 06:05:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:48,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 06:05:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:48,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 06:05:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:48,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 06:05:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:48,955 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:05:48,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:05:48,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822497073] [2022-07-12 06:05:48,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822497073] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:05:48,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:05:48,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:05:48,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715013103] [2022-07-12 06:05:48,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:05:48,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:05:48,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:05:48,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:05:48,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:05:48,958 INFO L87 Difference]: Start difference. First operand 18389 states and 31553 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) [2022-07-12 06:05:52,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:05:52,250 INFO L93 Difference]: Finished difference Result 48706 states and 85069 transitions. [2022-07-12 06:05:52,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:05:52,251 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 [2022-07-12 06:05:52,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:05:52,589 INFO L225 Difference]: With dead ends: 48706 [2022-07-12 06:05:52,589 INFO L226 Difference]: Without dead ends: 32927 [2022-07-12 06:05:52,856 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:05:52,857 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 1284 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 06:05:52,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 1348 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 06:05:52,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32927 states. [2022-07-12 06:05:55,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32927 to 32825. [2022-07-12 06:05:55,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32825 states, 27075 states have (on average 1.6317266851338874) internal successors, (44179), 27082 states have internal predecessors, (44179), 5722 states have call successors, (5722), 24 states have call predecessors, (5722), 27 states have return successors, (6333), 5718 states have call predecessors, (6333), 5719 states have call successors, (6333) [2022-07-12 06:05:55,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32825 states to 32825 states and 56234 transitions. [2022-07-12 06:05:55,864 INFO L78 Accepts]: Start accepts. Automaton has 32825 states and 56234 transitions. Word has length 139 [2022-07-12 06:05:55,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:05:55,865 INFO L495 AbstractCegarLoop]: Abstraction has 32825 states and 56234 transitions. [2022-07-12 06:05:55,865 INFO L496 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) [2022-07-12 06:05:55,865 INFO L276 IsEmpty]: Start isEmpty. Operand 32825 states and 56234 transitions. [2022-07-12 06:05:55,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-12 06:05:55,960 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:05:55,960 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:05:55,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 06:05:55,961 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:05:55,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:05:55,961 INFO L85 PathProgramCache]: Analyzing trace with hash -818469753, now seen corresponding path program 1 times [2022-07-12 06:05:55,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:05:55,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777889025] [2022-07-12 06:05:55,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:05:55,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:05:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:56,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:05:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:56,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:05:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:56,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:05:56,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:56,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:05:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:56,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:05:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:56,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:05:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:56,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:05:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:56,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 06:05:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:56,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 06:05:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:56,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 06:05:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:56,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 06:05:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:56,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 06:05:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:56,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 06:05:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:56,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 06:05:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:05:56,108 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:05:56,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:05:56,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777889025] [2022-07-12 06:05:56,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777889025] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:05:56,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:05:56,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:05:56,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896719087] [2022-07-12 06:05:56,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:05:56,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:05:56,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:05:56,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:05:56,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:05:56,113 INFO L87 Difference]: Start difference. First operand 32825 states and 56234 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, (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) [2022-07-12 06:06:00,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:06:00,407 INFO L93 Difference]: Finished difference Result 89603 states and 155703 transitions. [2022-07-12 06:06:00,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:06:00,408 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, (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 140 [2022-07-12 06:06:00,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:06:01,023 INFO L225 Difference]: With dead ends: 89603 [2022-07-12 06:06:01,023 INFO L226 Difference]: Without dead ends: 60264 [2022-07-12 06:06:01,105 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:06:01,118 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 1289 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 530 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 530 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 06:06:01,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1308 Valid, 1347 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [530 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 06:06:01,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60264 states. [2022-07-12 06:06:04,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60264 to 60162. [2022-07-12 06:06:04,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60162 states, 49899 states have (on average 1.6273272009459108) internal successors, (81202), 49906 states have internal predecessors, (81202), 10235 states have call successors, (10235), 24 states have call predecessors, (10235), 27 states have return successors, (11378), 10231 states have call predecessors, (11378), 10232 states have call successors, (11378) [2022-07-12 06:06:04,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60162 states to 60162 states and 102815 transitions. [2022-07-12 06:06:04,828 INFO L78 Accepts]: Start accepts. Automaton has 60162 states and 102815 transitions. Word has length 140 [2022-07-12 06:06:04,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:06:04,829 INFO L495 AbstractCegarLoop]: Abstraction has 60162 states and 102815 transitions. [2022-07-12 06:06:04,830 INFO L496 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, (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) [2022-07-12 06:06:04,830 INFO L276 IsEmpty]: Start isEmpty. Operand 60162 states and 102815 transitions. [2022-07-12 06:06:04,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-12 06:06:04,906 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:06:04,906 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:06:04,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 06:06:04,907 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:06:04,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:06:04,907 INFO L85 PathProgramCache]: Analyzing trace with hash 627002398, now seen corresponding path program 1 times [2022-07-12 06:06:04,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:06:04,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462992253] [2022-07-12 06:06:04,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:06:04,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:06:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:04,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:06:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:04,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:06:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:04,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:06:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:04,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:06:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:04,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:06:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:04,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:06:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:04,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:06:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:05,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 06:06:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:05,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 06:06:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:05,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 06:06:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:05,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 06:06:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:05,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 06:06:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:05,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 06:06:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:05,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 06:06:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:05,191 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:06:05,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:06:05,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462992253] [2022-07-12 06:06:05,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462992253] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:06:05,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:06:05,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:06:05,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876133804] [2022-07-12 06:06:05,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:06:05,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:06:05,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:06:05,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:06:05,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:06:05,194 INFO L87 Difference]: Start difference. First operand 60162 states and 102815 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) [2022-07-12 06:06:10,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:06:10,200 INFO L93 Difference]: Finished difference Result 112694 states and 196281 transitions. [2022-07-12 06:06:10,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:06:10,201 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 [2022-07-12 06:06:10,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:06:10,813 INFO L225 Difference]: With dead ends: 112694 [2022-07-12 06:06:10,813 INFO L226 Difference]: Without dead ends: 112522 [2022-07-12 06:06:10,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-12 06:06:10,861 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 1290 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:06:10,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1309 Valid, 1341 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 06:06:10,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112522 states. [2022-07-12 06:06:16,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112522 to 112420. [2022-07-12 06:06:16,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112420 states, 93789 states have (on average 1.6218213223299107) internal successors, (152109), 93796 states have internal predecessors, (152109), 18603 states have call successors, (18603), 24 states have call predecessors, (18603), 27 states have return successors, (20792), 18599 states have call predecessors, (20792), 18600 states have call successors, (20792) [2022-07-12 06:06:17,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112420 states to 112420 states and 191504 transitions. [2022-07-12 06:06:17,110 INFO L78 Accepts]: Start accepts. Automaton has 112420 states and 191504 transitions. Word has length 141 [2022-07-12 06:06:17,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:06:17,110 INFO L495 AbstractCegarLoop]: Abstraction has 112420 states and 191504 transitions. [2022-07-12 06:06:17,110 INFO L496 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) [2022-07-12 06:06:17,111 INFO L276 IsEmpty]: Start isEmpty. Operand 112420 states and 191504 transitions. [2022-07-12 06:06:17,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-12 06:06:17,151 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:06:17,151 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:06:17,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 06:06:17,151 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:06:17,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:06:17,152 INFO L85 PathProgramCache]: Analyzing trace with hash 290111752, now seen corresponding path program 1 times [2022-07-12 06:06:17,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:06:17,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56244802] [2022-07-12 06:06:17,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:06:17,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:06:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:17,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:06:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:17,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:06:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:17,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:06:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:17,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:06:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:17,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:06:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:17,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:06:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:17,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 06:06:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:17,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 06:06:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:17,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 06:06:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:17,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 06:06:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:17,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 06:06:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:17,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 06:06:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:17,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 06:06:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:17,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 06:06:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:17,272 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:06:17,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:06:17,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56244802] [2022-07-12 06:06:17,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56244802] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:06:17,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:06:17,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 06:06:17,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299254523] [2022-07-12 06:06:17,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:06:17,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 06:06:17,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:06:17,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 06:06:17,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:06:17,275 INFO L87 Difference]: Start difference. First operand 112420 states and 191504 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) [2022-07-12 06:06:23,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:06:23,941 INFO L93 Difference]: Finished difference Result 113222 states and 196033 transitions. [2022-07-12 06:06:23,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-12 06:06:23,941 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 [2022-07-12 06:06:23,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:06:24,606 INFO L225 Difference]: With dead ends: 113222 [2022-07-12 06:06:24,606 INFO L226 Difference]: Without dead ends: 113058 [2022-07-12 06:06:24,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=342, Invalid=918, Unknown=0, NotChecked=0, Total=1260 [2022-07-12 06:06:24,662 INFO L413 NwaCegarLoop]: 825 mSDtfsCounter, 2562 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 3578 mSolverCounterSat, 1257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2579 SdHoareTripleChecker+Valid, 1889 SdHoareTripleChecker+Invalid, 4835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1257 IncrementalHoareTripleChecker+Valid, 3578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-12 06:06:24,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2579 Valid, 1889 Invalid, 4835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1257 Valid, 3578 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-12 06:06:24,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113058 states. [2022-07-12 06:06:29,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113058 to 112799. [2022-07-12 06:06:29,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112799 states, 94082 states have (on average 1.6214153610680044) internal successors, (152546), 94095 states have internal predecessors, (152546), 18653 states have call successors, (18653), 57 states have call predecessors, (18653), 63 states have return successors, (20851), 18646 states have call predecessors, (20851), 18646 states have call successors, (20851) [2022-07-12 06:06:30,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112799 states to 112799 states and 192050 transitions. [2022-07-12 06:06:30,247 INFO L78 Accepts]: Start accepts. Automaton has 112799 states and 192050 transitions. Word has length 142 [2022-07-12 06:06:30,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:06:30,247 INFO L495 AbstractCegarLoop]: Abstraction has 112799 states and 192050 transitions. [2022-07-12 06:06:30,247 INFO L496 AbstractCegarLoop]: INTERPOLANT 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) [2022-07-12 06:06:30,247 INFO L276 IsEmpty]: Start isEmpty. Operand 112799 states and 192050 transitions. [2022-07-12 06:06:30,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-12 06:06:30,289 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:06:30,289 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:06:30,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 06:06:30,290 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:06:30,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:06:30,290 INFO L85 PathProgramCache]: Analyzing trace with hash -2094642251, now seen corresponding path program 1 times [2022-07-12 06:06:30,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:06:30,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037147421] [2022-07-12 06:06:30,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:06:30,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:06:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:30,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:06:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:30,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:06:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:30,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:06:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:30,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:06:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:30,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:06:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:30,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:06:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:30,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 06:06:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:30,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 06:06:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:30,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 06:06:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:30,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 06:06:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:30,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 06:06:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:30,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 06:06:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:30,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 06:06:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:30,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-12 06:06:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:30,494 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:06:30,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:06:30,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037147421] [2022-07-12 06:06:30,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037147421] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:06:30,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:06:30,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-12 06:06:30,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876721089] [2022-07-12 06:06:30,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:06:30,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-12 06:06:30,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:06:30,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-12 06:06:30,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2022-07-12 06:06:30,497 INFO L87 Difference]: Start difference. First operand 112799 states and 192050 transitions. Second operand has 17 states, 15 states have (on average 6.533333333333333) internal successors, (98), 11 states have internal predecessors, (98), 7 states have call successors, (18), 8 states have call predecessors, (18), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2022-07-12 06:06:37,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:06:37,112 INFO L93 Difference]: Finished difference Result 113834 states and 196947 transitions. [2022-07-12 06:06:37,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-12 06:06:37,114 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.533333333333333) internal successors, (98), 11 states have internal predecessors, (98), 7 states have call successors, (18), 8 states have call predecessors, (18), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) Word has length 143 [2022-07-12 06:06:37,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:06:37,821 INFO L225 Difference]: With dead ends: 113834 [2022-07-12 06:06:37,821 INFO L226 Difference]: Without dead ends: 113255 [2022-07-12 06:06:37,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=401, Invalid=1855, Unknown=0, NotChecked=0, Total=2256 [2022-07-12 06:06:37,871 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 1759 mSDsluCounter, 2430 mSDsCounter, 0 mSdLazyCounter, 6490 mSolverCounterSat, 897 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1759 SdHoareTripleChecker+Valid, 3013 SdHoareTripleChecker+Invalid, 7387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 897 IncrementalHoareTripleChecker+Valid, 6490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-12 06:06:37,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1759 Valid, 3013 Invalid, 7387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [897 Valid, 6490 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-12 06:06:37,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113255 states. [2022-07-12 06:06:42,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113255 to 112916. [2022-07-12 06:06:42,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112916 states, 94161 states have (on average 1.62118074361997) internal successors, (152652), 94179 states have internal predecessors, (152652), 18688 states have call successors, (18688), 60 states have call predecessors, (18688), 66 states have return successors, (20884), 18676 states have call predecessors, (20884), 18678 states have call successors, (20884) [2022-07-12 06:06:43,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112916 states to 112916 states and 192224 transitions. [2022-07-12 06:06:43,097 INFO L78 Accepts]: Start accepts. Automaton has 112916 states and 192224 transitions. Word has length 143 [2022-07-12 06:06:43,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:06:43,097 INFO L495 AbstractCegarLoop]: Abstraction has 112916 states and 192224 transitions. [2022-07-12 06:06:43,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.533333333333333) internal successors, (98), 11 states have internal predecessors, (98), 7 states have call successors, (18), 8 states have call predecessors, (18), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2022-07-12 06:06:43,098 INFO L276 IsEmpty]: Start isEmpty. Operand 112916 states and 192224 transitions. [2022-07-12 06:06:43,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 06:06:43,153 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:06:43,153 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:06:43,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 06:06:43,154 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:06:43,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:06:43,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1897977214, now seen corresponding path program 1 times [2022-07-12 06:06:43,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:06:43,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920773055] [2022-07-12 06:06:43,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:06:43,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:06:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:43,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:06:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:43,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:06:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:43,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:06:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:43,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:06:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:43,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:06:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:43,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:06:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:43,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 06:06:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:43,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 06:06:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:43,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:06:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:43,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 06:06:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:43,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 06:06:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:43,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 06:06:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:43,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 06:06:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:43,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-12 06:06:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:43,472 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-12 06:06:43,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:06:43,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920773055] [2022-07-12 06:06:43,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920773055] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:06:43,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267584781] [2022-07-12 06:06:43,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:06:43,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:06:43,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:06:43,479 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:06:43,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 06:06:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:06:43,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-12 06:06:43,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:06:44,096 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 06:06:44,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:06:44,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267584781] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:06:44,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:06:44,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [20] total 31 [2022-07-12 06:06:44,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660365604] [2022-07-12 06:06:44,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:06:44,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 06:06:44,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:06:44,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 06:06:44,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=857, Unknown=0, NotChecked=0, Total=930 [2022-07-12 06:06:44,098 INFO L87 Difference]: Start difference. First operand 112916 states and 192224 transitions. Second operand has 13 states, 12 states have (on average 9.0) internal successors, (108), 11 states have internal predecessors, (108), 6 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14)