./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/elevator_spec3_product30.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 4fa4154afcc1fa94c570756c4d3485a9415aeef22801b46450f13cd61ecf8230 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 17:13:40,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 17:13:40,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 17:13:40,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 17:13:40,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 17:13:40,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 17:13:40,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 17:13:40,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 17:13:40,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 17:13:40,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 17:13:40,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 17:13:40,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 17:13:40,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 17:13:40,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 17:13:40,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 17:13:40,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 17:13:40,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 17:13:40,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 17:13:40,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 17:13:40,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 17:13:40,293 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 17:13:40,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 17:13:40,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 17:13:40,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 17:13:40,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 17:13:40,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 17:13:40,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 17:13:40,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 17:13:40,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 17:13:40,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 17:13:40,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 17:13:40,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 17:13:40,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 17:13:40,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 17:13:40,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 17:13:40,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 17:13:40,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 17:13:40,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 17:13:40,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 17:13:40,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 17:13:40,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 17:13:40,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 17:13:40,309 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 17:13:40,330 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 17:13:40,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 17:13:40,331 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 17:13:40,331 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 17:13:40,331 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 17:13:40,332 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 17:13:40,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 17:13:40,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 17:13:40,332 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 17:13:40,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 17:13:40,333 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 17:13:40,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 17:13:40,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 17:13:40,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 17:13:40,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 17:13:40,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 17:13:40,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 17:13:40,334 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 17:13:40,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 17:13:40,335 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 17:13:40,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 17:13:40,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 17:13:40,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 17:13:40,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 17:13:40,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:13:40,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 17:13:40,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 17:13:40,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 17:13:40,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 17:13:40,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 17:13:40,337 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 17:13:40,337 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 17:13:40,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 17:13:40,337 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fa4154afcc1fa94c570756c4d3485a9415aeef22801b46450f13cd61ecf8230 [2022-07-22 17:13:40,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 17:13:40,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 17:13:40,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 17:13:40,536 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 17:13:40,536 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 17:13:40,537 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c [2022-07-22 17:13:40,584 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/431fa09f2/2c9adcc20aff47f9a00f04dee02e9d35/FLAGf6e5f810f [2022-07-22 17:13:40,971 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 17:13:40,987 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c [2022-07-22 17:13:41,015 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/431fa09f2/2c9adcc20aff47f9a00f04dee02e9d35/FLAGf6e5f810f [2022-07-22 17:13:41,336 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/431fa09f2/2c9adcc20aff47f9a00f04dee02e9d35 [2022-07-22 17:13:41,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 17:13:41,339 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 17:13:41,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 17:13:41,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 17:13:41,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 17:13:41,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:13:41" (1/1) ... [2022-07-22 17:13:41,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fd24fe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:13:41, skipping insertion in model container [2022-07-22 17:13:41,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:13:41" (1/1) ... [2022-07-22 17:13:41,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 17:13:41,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 17:13:41,581 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/elevator_spec3_product30.cil.c[14523,14536] [2022-07-22 17:13:41,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:13:41,772 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 17:13:41,801 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/elevator_spec3_product30.cil.c[14523,14536] [2022-07-22 17:13:41,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:13:41,878 INFO L208 MainTranslator]: Completed translation [2022-07-22 17:13:41,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:13:41 WrapperNode [2022-07-22 17:13:41,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 17:13:41,879 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 17:13:41,879 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 17:13:41,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 17:13:41,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:13:41" (1/1) ... [2022-07-22 17:13:41,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:13:41" (1/1) ... [2022-07-22 17:13:41,937 INFO L137 Inliner]: procedures = 93, calls = 353, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 949 [2022-07-22 17:13:41,943 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 17:13:41,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 17:13:41,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 17:13:41,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 17:13:41,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:13:41" (1/1) ... [2022-07-22 17:13:41,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:13:41" (1/1) ... [2022-07-22 17:13:41,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:13:41" (1/1) ... [2022-07-22 17:13:41,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:13:41" (1/1) ... [2022-07-22 17:13:41,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:13:41" (1/1) ... [2022-07-22 17:13:42,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:13:41" (1/1) ... [2022-07-22 17:13:42,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:13:41" (1/1) ... [2022-07-22 17:13:42,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 17:13:42,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 17:13:42,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 17:13:42,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 17:13:42,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:13:41" (1/1) ... [2022-07-22 17:13:42,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:13:42,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:13:42,059 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) [2022-07-22 17:13:42,061 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 [2022-07-22 17:13:42,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 17:13:42,084 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-07-22 17:13:42,084 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-07-22 17:13:42,084 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-22 17:13:42,084 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-22 17:13:42,084 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-22 17:13:42,084 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-22 17:13:42,085 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-22 17:13:42,085 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-22 17:13:42,085 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-07-22 17:13:42,085 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-07-22 17:13:42,085 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-22 17:13:42,086 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-22 17:13:42,086 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-07-22 17:13:42,086 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-07-22 17:13:42,086 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-22 17:13:42,086 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-22 17:13:42,086 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-22 17:13:42,086 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-22 17:13:42,086 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-22 17:13:42,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-22 17:13:42,087 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-22 17:13:42,087 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-22 17:13:42,087 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-22 17:13:42,087 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-22 17:13:42,087 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-22 17:13:42,087 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-22 17:13:42,087 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-22 17:13:42,087 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-22 17:13:42,087 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2022-07-22 17:13:42,088 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2022-07-22 17:13:42,088 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-22 17:13:42,088 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-22 17:13:42,088 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2022-07-22 17:13:42,088 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2022-07-22 17:13:42,088 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-22 17:13:42,088 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-22 17:13:42,088 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-22 17:13:42,088 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-22 17:13:42,088 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-22 17:13:42,089 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-22 17:13:42,089 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-22 17:13:42,089 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-22 17:13:42,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 17:13:42,089 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-22 17:13:42,089 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-22 17:13:42,090 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-22 17:13:42,090 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-22 17:13:42,090 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-22 17:13:42,090 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-22 17:13:42,090 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-22 17:13:42,090 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-22 17:13:42,090 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2022-07-22 17:13:42,091 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2022-07-22 17:13:42,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 17:13:42,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 17:13:42,092 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-22 17:13:42,093 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-22 17:13:42,241 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 17:13:42,242 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 17:13:42,934 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 17:13:42,951 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 17:13:42,952 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 17:13:42,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:13:42 BoogieIcfgContainer [2022-07-22 17:13:42,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 17:13:42,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 17:13:42,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 17:13:42,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 17:13:42,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 05:13:41" (1/3) ... [2022-07-22 17:13:42,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75936b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:13:42, skipping insertion in model container [2022-07-22 17:13:42,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:13:41" (2/3) ... [2022-07-22 17:13:42,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75936b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:13:42, skipping insertion in model container [2022-07-22 17:13:42,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:13:42" (3/3) ... [2022-07-22 17:13:42,961 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product30.cil.c [2022-07-22 17:13:42,971 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 17:13:42,971 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 17:13:43,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 17:13:43,033 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@5ae0593e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4e1db017 [2022-07-22 17:13:43,033 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 17:13:43,046 INFO L276 IsEmpty]: Start isEmpty. Operand has 605 states, 468 states have (on average 1.6752136752136753) internal successors, (784), 488 states have internal predecessors, (784), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) [2022-07-22 17:13:43,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-22 17:13:43,089 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:13:43,090 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:13:43,091 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:13:43,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:13:43,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1554402963, now seen corresponding path program 1 times [2022-07-22 17:13:43,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:13:43,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792955424] [2022-07-22 17:13:43,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:13:43,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:13:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:13:43,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:13:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:13:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:13:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:13:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 17:13:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 17:13:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:13:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 17:13:43,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:13:43,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792955424] [2022-07-22 17:13:43,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792955424] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:13:43,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:13:43,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:13:43,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436892816] [2022-07-22 17:13:43,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:13:43,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:13:43,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:13:43,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:13:43,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:13:43,791 INFO L87 Difference]: Start difference. First operand has 605 states, 468 states have (on average 1.6752136752136753) internal successors, (784), 488 states have internal predecessors, (784), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 17:13:49,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:13:49,139 INFO L93 Difference]: Finished difference Result 1491 states and 2561 transitions. [2022-07-22 17:13:49,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 17:13:49,141 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2022-07-22 17:13:49,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:13:49,163 INFO L225 Difference]: With dead ends: 1491 [2022-07-22 17:13:49,163 INFO L226 Difference]: Without dead ends: 890 [2022-07-22 17:13:49,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-22 17:13:49,174 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 1581 mSDsluCounter, 2055 mSDsCounter, 0 mSdLazyCounter, 5060 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1690 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 5521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 5060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:13:49,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1690 Valid, 2955 Invalid, 5521 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [461 Valid, 5060 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-07-22 17:13:49,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2022-07-22 17:13:49,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 608. [2022-07-22 17:13:49,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 471 states have (on average 1.6666666666666667) internal successors, (785), 491 states have internal predecessors, (785), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 103 states have call predecessors, (108), 106 states have call successors, (108) [2022-07-22 17:13:49,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 1002 transitions. [2022-07-22 17:13:49,305 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 1002 transitions. Word has length 67 [2022-07-22 17:13:49,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:13:49,306 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 1002 transitions. [2022-07-22 17:13:49,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 17:13:49,306 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 1002 transitions. [2022-07-22 17:13:49,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 17:13:49,311 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:13:49,311 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:13:49,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 17:13:49,312 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:13:49,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:13:49,313 INFO L85 PathProgramCache]: Analyzing trace with hash -351252067, now seen corresponding path program 1 times [2022-07-22 17:13:49,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:13:49,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344797405] [2022-07-22 17:13:49,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:13:49,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:13:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:49,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:13:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:49,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:13:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:49,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:13:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:49,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:13:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:49,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:13:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:49,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 17:13:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:49,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:13:49,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:49,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 17:13:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:49,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 17:13:49,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:13:49,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344797405] [2022-07-22 17:13:49,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344797405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:13:49,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:13:49,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:13:49,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108001830] [2022-07-22 17:13:49,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:13:49,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:13:49,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:13:49,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:13:49,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:13:49,612 INFO L87 Difference]: Start difference. First operand 608 states and 1002 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 17:13:53,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:13:53,814 INFO L93 Difference]: Finished difference Result 1481 states and 2519 transitions. [2022-07-22 17:13:53,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 17:13:53,814 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-07-22 17:13:53,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:13:53,821 INFO L225 Difference]: With dead ends: 1481 [2022-07-22 17:13:53,821 INFO L226 Difference]: Without dead ends: 889 [2022-07-22 17:13:53,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:13:53,824 INFO L413 NwaCegarLoop]: 874 mSDtfsCounter, 906 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 2620 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 2846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 2620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:13:53,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1014 Valid, 1818 Invalid, 2846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 2620 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-22 17:13:53,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2022-07-22 17:13:53,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 608. [2022-07-22 17:13:53,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 471 states have (on average 1.664543524416136) internal successors, (784), 491 states have internal predecessors, (784), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 103 states have call predecessors, (108), 106 states have call successors, (108) [2022-07-22 17:13:53,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 1001 transitions. [2022-07-22 17:13:53,881 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 1001 transitions. Word has length 68 [2022-07-22 17:13:53,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:13:53,883 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 1001 transitions. [2022-07-22 17:13:53,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 17:13:53,883 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 1001 transitions. [2022-07-22 17:13:53,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 17:13:53,884 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:13:53,885 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:13:53,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 17:13:53,885 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:13:53,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:13:53,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1979877755, now seen corresponding path program 1 times [2022-07-22 17:13:53,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:13:53,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507432716] [2022-07-22 17:13:53,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:13:53,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:13:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:54,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:13:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:54,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:13:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:54,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:13:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:54,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:13:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:54,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:13:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:54,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 17:13:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:54,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:13:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:54,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 17:13:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:54,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 17:13:54,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:13:54,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507432716] [2022-07-22 17:13:54,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507432716] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:13:54,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:13:54,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:13:54,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620295924] [2022-07-22 17:13:54,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:13:54,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:13:54,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:13:54,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:13:54,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:13:54,155 INFO L87 Difference]: Start difference. First operand 608 states and 1001 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 17:13:57,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:13:57,813 INFO L93 Difference]: Finished difference Result 1476 states and 2505 transitions. [2022-07-22 17:13:57,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 17:13:57,814 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-07-22 17:13:57,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:13:57,821 INFO L225 Difference]: With dead ends: 1476 [2022-07-22 17:13:57,821 INFO L226 Difference]: Without dead ends: 853 [2022-07-22 17:13:57,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:13:57,824 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 1467 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 2877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:13:57,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 1798 Invalid, 2877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 2429 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-22 17:13:57,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2022-07-22 17:13:57,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 584. [2022-07-22 17:13:57,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 450 states have (on average 1.6555555555555554) internal successors, (745), 468 states have internal predecessors, (745), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-22 17:13:57,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 958 transitions. [2022-07-22 17:13:57,862 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 958 transitions. Word has length 68 [2022-07-22 17:13:57,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:13:57,864 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 958 transitions. [2022-07-22 17:13:57,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 17:13:57,864 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 958 transitions. [2022-07-22 17:13:57,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 17:13:57,866 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:13:57,866 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:13:57,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 17:13:57,866 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:13:57,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:13:57,867 INFO L85 PathProgramCache]: Analyzing trace with hash 815635743, now seen corresponding path program 1 times [2022-07-22 17:13:57,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:13:57,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554450532] [2022-07-22 17:13:57,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:13:57,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:13:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:58,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:13:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:58,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:13:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:58,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:13:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:58,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:13:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:58,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:13:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:58,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:13:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:58,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 17:13:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:58,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 17:13:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:58,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 17:13:58,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:13:58,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554450532] [2022-07-22 17:13:58,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554450532] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:13:58,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:13:58,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:13:58,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660511186] [2022-07-22 17:13:58,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:13:58,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:13:58,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:13:58,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:13:58,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:13:58,151 INFO L87 Difference]: Start difference. First operand 584 states and 958 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 17:14:02,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:14:02,607 INFO L93 Difference]: Finished difference Result 1439 states and 2436 transitions. [2022-07-22 17:14:02,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 17:14:02,612 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 69 [2022-07-22 17:14:02,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:14:02,616 INFO L225 Difference]: With dead ends: 1439 [2022-07-22 17:14:02,617 INFO L226 Difference]: Without dead ends: 847 [2022-07-22 17:14:02,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-22 17:14:02,628 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 1506 mSDsluCounter, 1989 mSDsCounter, 0 mSdLazyCounter, 4906 mSolverCounterSat, 452 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 2853 SdHoareTripleChecker+Invalid, 5358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 4906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:14:02,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1614 Valid, 2853 Invalid, 5358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [452 Valid, 4906 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-22 17:14:02,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-07-22 17:14:02,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 578. [2022-07-22 17:14:02,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 444 states have (on average 1.6486486486486487) internal successors, (732), 462 states have internal predecessors, (732), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-22 17:14:02,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 945 transitions. [2022-07-22 17:14:02,671 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 945 transitions. Word has length 69 [2022-07-22 17:14:02,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:14:02,672 INFO L495 AbstractCegarLoop]: Abstraction has 578 states and 945 transitions. [2022-07-22 17:14:02,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 17:14:02,672 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 945 transitions. [2022-07-22 17:14:02,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-22 17:14:02,673 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:14:02,673 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:14:02,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 17:14:02,673 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:14:02,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:14:02,673 INFO L85 PathProgramCache]: Analyzing trace with hash -691110395, now seen corresponding path program 1 times [2022-07-22 17:14:02,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:14:02,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958588618] [2022-07-22 17:14:02,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:14:02,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:14:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:02,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:14:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:02,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:14:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:02,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:14:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:02,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:14:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:02,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:14:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:02,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:14:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:02,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:14:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:02,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:14:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:02,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 17:14:02,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:14:02,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958588618] [2022-07-22 17:14:02,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958588618] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:14:02,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:14:02,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:14:02,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903549832] [2022-07-22 17:14:02,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:14:02,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:14:02,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:14:02,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:14:02,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:14:02,936 INFO L87 Difference]: Start difference. First operand 578 states and 945 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 17:14:06,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:14:06,322 INFO L93 Difference]: Finished difference Result 1409 states and 2385 transitions. [2022-07-22 17:14:06,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 17:14:06,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2022-07-22 17:14:06,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:14:06,326 INFO L225 Difference]: With dead ends: 1409 [2022-07-22 17:14:06,327 INFO L226 Difference]: Without dead ends: 847 [2022-07-22 17:14:06,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:14:06,333 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 1451 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 2306 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1559 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 2749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 2306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:14:06,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1559 Valid, 1737 Invalid, 2749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 2306 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-22 17:14:06,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-07-22 17:14:06,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 578. [2022-07-22 17:14:06,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 444 states have (on average 1.6463963963963963) internal successors, (731), 462 states have internal predecessors, (731), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-22 17:14:06,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 944 transitions. [2022-07-22 17:14:06,384 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 944 transitions. Word has length 70 [2022-07-22 17:14:06,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:14:06,385 INFO L495 AbstractCegarLoop]: Abstraction has 578 states and 944 transitions. [2022-07-22 17:14:06,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 17:14:06,385 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 944 transitions. [2022-07-22 17:14:06,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-22 17:14:06,386 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:14:06,387 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:14:06,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 17:14:06,388 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:14:06,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:14:06,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1448488452, now seen corresponding path program 1 times [2022-07-22 17:14:06,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:14:06,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328420958] [2022-07-22 17:14:06,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:14:06,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:14:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:06,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:14:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:06,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:14:06,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:06,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:14:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:06,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:14:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:06,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:14:06,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:06,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 17:14:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:06,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:14:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:06,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 17:14:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:06,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 17:14:06,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:14:06,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328420958] [2022-07-22 17:14:06,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328420958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:14:06,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:14:06,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:14:06,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567696940] [2022-07-22 17:14:06,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:14:06,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:14:06,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:14:06,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:14:06,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:14:06,685 INFO L87 Difference]: Start difference. First operand 578 states and 944 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 17:14:11,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:14:11,105 INFO L93 Difference]: Finished difference Result 1427 states and 2405 transitions. [2022-07-22 17:14:11,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 17:14:11,106 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2022-07-22 17:14:11,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:14:11,122 INFO L225 Difference]: With dead ends: 1427 [2022-07-22 17:14:11,122 INFO L226 Difference]: Without dead ends: 841 [2022-07-22 17:14:11,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-22 17:14:11,125 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 1482 mSDsluCounter, 1997 mSDsCounter, 0 mSdLazyCounter, 4820 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 2847 SdHoareTripleChecker+Invalid, 5278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 4820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:14:11,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1590 Valid, 2847 Invalid, 5278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 4820 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-22 17:14:11,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2022-07-22 17:14:11,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 572. [2022-07-22 17:14:11,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 438 states have (on average 1.639269406392694) internal successors, (718), 456 states have internal predecessors, (718), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-22 17:14:11,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 931 transitions. [2022-07-22 17:14:11,173 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 931 transitions. Word has length 71 [2022-07-22 17:14:11,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:14:11,174 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 931 transitions. [2022-07-22 17:14:11,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 17:14:11,175 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 931 transitions. [2022-07-22 17:14:11,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-22 17:14:11,177 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:14:11,178 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:14:11,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 17:14:11,178 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:14:11,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:14:11,178 INFO L85 PathProgramCache]: Analyzing trace with hash -5126265, now seen corresponding path program 1 times [2022-07-22 17:14:11,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:14:11,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394807182] [2022-07-22 17:14:11,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:14:11,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:14:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:11,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:14:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:11,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:14:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:11,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:14:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:11,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:14:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:11,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:14:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:11,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 17:14:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:11,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:14:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:11,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 17:14:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:11,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 17:14:11,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:14:11,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394807182] [2022-07-22 17:14:11,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394807182] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:14:11,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:14:11,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:14:11,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244733185] [2022-07-22 17:14:11,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:14:11,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:14:11,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:14:11,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:14:11,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:14:11,442 INFO L87 Difference]: Start difference. First operand 572 states and 931 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 17:14:14,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:14:14,915 INFO L93 Difference]: Finished difference Result 1397 states and 2356 transitions. [2022-07-22 17:14:14,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 17:14:14,916 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2022-07-22 17:14:14,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:14:14,920 INFO L225 Difference]: With dead ends: 1397 [2022-07-22 17:14:14,920 INFO L226 Difference]: Without dead ends: 841 [2022-07-22 17:14:14,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:14:14,922 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 1435 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 2272 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 2731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 2272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:14:14,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 1698 Invalid, 2731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 2272 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-22 17:14:14,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2022-07-22 17:14:14,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 572. [2022-07-22 17:14:14,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 438 states have (on average 1.6369863013698631) internal successors, (717), 456 states have internal predecessors, (717), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-22 17:14:14,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 930 transitions. [2022-07-22 17:14:14,988 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 930 transitions. Word has length 72 [2022-07-22 17:14:14,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:14:14,988 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 930 transitions. [2022-07-22 17:14:14,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 17:14:14,989 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 930 transitions. [2022-07-22 17:14:14,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-22 17:14:14,991 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:14:14,991 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:14:14,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 17:14:14,991 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:14:14,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:14:14,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1976267521, now seen corresponding path program 1 times [2022-07-22 17:14:14,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:14:14,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88761382] [2022-07-22 17:14:14,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:14:14,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:14:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:15,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:14:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:15,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:14:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:15,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:14:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:15,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:14:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:15,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:14:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:15,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:14:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:15,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 17:14:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:15,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 17:14:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:15,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 17:14:15,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:14:15,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88761382] [2022-07-22 17:14:15,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88761382] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:14:15,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:14:15,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:14:15,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867251403] [2022-07-22 17:14:15,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:14:15,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:14:15,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:14:15,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:14:15,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:14:15,230 INFO L87 Difference]: Start difference. First operand 572 states and 930 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 17:14:19,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:14:19,564 INFO L93 Difference]: Finished difference Result 1418 states and 2378 transitions. [2022-07-22 17:14:19,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 17:14:19,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2022-07-22 17:14:19,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:14:19,588 INFO L225 Difference]: With dead ends: 1418 [2022-07-22 17:14:19,588 INFO L226 Difference]: Without dead ends: 862 [2022-07-22 17:14:19,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:14:19,590 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 834 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 1820 SdHoareTripleChecker+Invalid, 2694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:14:19,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 1820 Invalid, 2694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 2471 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-22 17:14:19,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2022-07-22 17:14:19,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 577. [2022-07-22 17:14:19,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 443 states have (on average 1.6297968397291196) internal successors, (722), 461 states have internal predecessors, (722), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-22 17:14:19,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 935 transitions. [2022-07-22 17:14:19,627 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 935 transitions. Word has length 73 [2022-07-22 17:14:19,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:14:19,627 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 935 transitions. [2022-07-22 17:14:19,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 17:14:19,628 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 935 transitions. [2022-07-22 17:14:19,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-22 17:14:19,629 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:14:19,629 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:14:19,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 17:14:19,630 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:14:19,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:14:19,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1518882784, now seen corresponding path program 1 times [2022-07-22 17:14:19,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:14:19,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384152416] [2022-07-22 17:14:19,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:14:19,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:14:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:19,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:14:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:19,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:14:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:19,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:14:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:19,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:14:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:19,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:14:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:19,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:14:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:19,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 17:14:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:19,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 17:14:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:19,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 17:14:19,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:14:19,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384152416] [2022-07-22 17:14:19,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384152416] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:14:19,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:14:19,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:14:19,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3387379] [2022-07-22 17:14:19,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:14:19,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:14:19,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:14:19,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:14:19,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:14:19,973 INFO L87 Difference]: Start difference. First operand 577 states and 935 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 17:14:24,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:14:24,669 INFO L93 Difference]: Finished difference Result 1420 states and 2377 transitions. [2022-07-22 17:14:24,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 17:14:24,670 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 73 [2022-07-22 17:14:24,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:14:24,673 INFO L225 Difference]: With dead ends: 1420 [2022-07-22 17:14:24,673 INFO L226 Difference]: Without dead ends: 835 [2022-07-22 17:14:24,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-22 17:14:24,676 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 1439 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 4762 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 2886 SdHoareTripleChecker+Invalid, 5206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 4762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:14:24,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1547 Valid, 2886 Invalid, 5206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 4762 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-22 17:14:24,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-07-22 17:14:24,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 566. [2022-07-22 17:14:24,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 432 states have (on average 1.6273148148148149) internal successors, (703), 450 states have internal predecessors, (703), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-22 17:14:24,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 916 transitions. [2022-07-22 17:14:24,722 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 916 transitions. Word has length 73 [2022-07-22 17:14:24,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:14:24,722 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 916 transitions. [2022-07-22 17:14:24,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 17:14:24,722 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 916 transitions. [2022-07-22 17:14:24,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-22 17:14:24,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:14:24,723 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:14:24,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 17:14:24,724 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:14:24,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:14:24,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1024412364, now seen corresponding path program 1 times [2022-07-22 17:14:24,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:14:24,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879367017] [2022-07-22 17:14:24,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:14:24,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:14:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:24,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:14:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:25,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:14:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:25,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:14:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:25,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:14:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:25,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:14:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:25,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 17:14:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:25,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 17:14:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:25,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 17:14:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:25,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 17:14:25,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:14:25,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879367017] [2022-07-22 17:14:25,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879367017] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:14:25,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:14:25,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:14:25,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586115240] [2022-07-22 17:14:25,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:14:25,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:14:25,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:14:25,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:14:25,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:14:25,051 INFO L87 Difference]: Start difference. First operand 566 states and 916 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 17:14:28,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:14:28,911 INFO L93 Difference]: Finished difference Result 1397 states and 2337 transitions. [2022-07-22 17:14:28,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 17:14:28,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2022-07-22 17:14:28,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:14:28,915 INFO L225 Difference]: With dead ends: 1397 [2022-07-22 17:14:28,915 INFO L226 Difference]: Without dead ends: 847 [2022-07-22 17:14:28,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:14:28,917 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 804 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 2428 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 2653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 2428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:14:28,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 1769 Invalid, 2653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 2428 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-22 17:14:28,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-07-22 17:14:28,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 572. [2022-07-22 17:14:28,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 438 states have (on average 1.6187214611872147) internal successors, (709), 456 states have internal predecessors, (709), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-22 17:14:28,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 922 transitions. [2022-07-22 17:14:28,959 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 922 transitions. Word has length 74 [2022-07-22 17:14:28,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:14:28,959 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 922 transitions. [2022-07-22 17:14:28,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 17:14:28,959 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 922 transitions. [2022-07-22 17:14:28,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-22 17:14:28,960 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:14:28,960 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:14:28,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 17:14:28,960 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:14:28,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:14:28,961 INFO L85 PathProgramCache]: Analyzing trace with hash -820954802, now seen corresponding path program 1 times [2022-07-22 17:14:28,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:14:28,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444076499] [2022-07-22 17:14:28,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:14:28,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:14:28,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:29,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:14:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:29,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:14:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:29,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:14:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:29,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:14:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:29,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:14:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:29,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 17:14:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:29,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 17:14:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:29,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 17:14:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:29,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 17:14:29,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:14:29,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444076499] [2022-07-22 17:14:29,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444076499] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:14:29,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:14:29,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:14:29,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956919636] [2022-07-22 17:14:29,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:14:29,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:14:29,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:14:29,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:14:29,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:14:29,233 INFO L87 Difference]: Start difference. First operand 572 states and 922 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 17:14:33,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:14:33,916 INFO L93 Difference]: Finished difference Result 1400 states and 2338 transitions. [2022-07-22 17:14:33,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 17:14:33,917 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2022-07-22 17:14:33,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:14:33,920 INFO L225 Difference]: With dead ends: 1400 [2022-07-22 17:14:33,920 INFO L226 Difference]: Without dead ends: 835 [2022-07-22 17:14:33,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:14:33,922 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 822 mSDsluCounter, 2008 mSDsCounter, 0 mSdLazyCounter, 4805 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 2810 SdHoareTripleChecker+Invalid, 5030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 4805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:14:33,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 2810 Invalid, 5030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 4805 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-22 17:14:33,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-07-22 17:14:33,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 566. [2022-07-22 17:14:33,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 432 states have (on average 1.625) internal successors, (702), 450 states have internal predecessors, (702), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-22 17:14:33,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 915 transitions. [2022-07-22 17:14:33,963 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 915 transitions. Word has length 74 [2022-07-22 17:14:33,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:14:33,963 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 915 transitions. [2022-07-22 17:14:33,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 17:14:33,964 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 915 transitions. [2022-07-22 17:14:33,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-22 17:14:33,965 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:14:33,965 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:14:33,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 17:14:33,966 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:14:33,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:14:33,966 INFO L85 PathProgramCache]: Analyzing trace with hash -931862683, now seen corresponding path program 1 times [2022-07-22 17:14:33,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:14:33,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449069632] [2022-07-22 17:14:33,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:14:33,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:14:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:34,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:14:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:34,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:14:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:34,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:14:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:34,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:14:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:34,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:14:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:34,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:14:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:34,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 17:14:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:34,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:14:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:34,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 17:14:34,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:14:34,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449069632] [2022-07-22 17:14:34,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449069632] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:14:34,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:14:34,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 17:14:34,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093759907] [2022-07-22 17:14:34,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:14:34,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 17:14:34,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:14:34,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 17:14:34,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:14:34,249 INFO L87 Difference]: Start difference. First operand 566 states and 915 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-22 17:14:43,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:14:43,175 INFO L93 Difference]: Finished difference Result 2158 states and 3662 transitions. [2022-07-22 17:14:43,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:14:43,176 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 75 [2022-07-22 17:14:43,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:14:43,214 INFO L225 Difference]: With dead ends: 2158 [2022-07-22 17:14:43,215 INFO L226 Difference]: Without dead ends: 1610 [2022-07-22 17:14:43,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:14:43,219 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 3226 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 5418 mSolverCounterSat, 1200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3364 SdHoareTripleChecker+Valid, 2480 SdHoareTripleChecker+Invalid, 6618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1200 IncrementalHoareTripleChecker+Valid, 5418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:14:43,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3364 Valid, 2480 Invalid, 6618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1200 Valid, 5418 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-07-22 17:14:43,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2022-07-22 17:14:43,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 1224. [2022-07-22 17:14:43,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 896 states have (on average 1.578125) internal successors, (1414), 950 states have internal predecessors, (1414), 273 states have call successors, (273), 51 states have call predecessors, (273), 54 states have return successors, (347), 265 states have call predecessors, (347), 269 states have call successors, (347) [2022-07-22 17:14:43,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 2034 transitions. [2022-07-22 17:14:43,350 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 2034 transitions. Word has length 75 [2022-07-22 17:14:43,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:14:43,351 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 2034 transitions. [2022-07-22 17:14:43,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-22 17:14:43,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 2034 transitions. [2022-07-22 17:14:43,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-22 17:14:43,352 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:14:43,352 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:14:43,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 17:14:43,353 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:14:43,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:14:43,353 INFO L85 PathProgramCache]: Analyzing trace with hash 461032549, now seen corresponding path program 1 times [2022-07-22 17:14:43,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:14:43,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806246934] [2022-07-22 17:14:43,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:14:43,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:14:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:43,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:14:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:43,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:14:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:43,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:14:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:43,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:14:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:43,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:14:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:43,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:14:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:43,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 17:14:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:43,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:14:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:43,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 17:14:43,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:14:43,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806246934] [2022-07-22 17:14:43,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806246934] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:14:43,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940322097] [2022-07-22 17:14:43,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:14:43,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:14:43,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:14:43,627 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) [2022-07-22 17:14:43,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 17:14:43,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:43,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 1497 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 17:14:43,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:14:43,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:14:43,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:14:43,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940322097] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:14:43,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:14:43,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-22 17:14:43,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085475497] [2022-07-22 17:14:43,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:14:43,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:14:43,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:14:43,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:14:43,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:14:43,923 INFO L87 Difference]: Start difference. First operand 1224 states and 2034 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 17:14:44,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:14:44,225 INFO L93 Difference]: Finished difference Result 3544 states and 5964 transitions. [2022-07-22 17:14:44,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:14:44,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2022-07-22 17:14:44,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:14:44,241 INFO L225 Difference]: With dead ends: 3544 [2022-07-22 17:14:44,242 INFO L226 Difference]: Without dead ends: 2338 [2022-07-22 17:14:44,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:14:44,250 INFO L413 NwaCegarLoop]: 1059 mSDtfsCounter, 879 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:14:44,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 1870 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:14:44,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2022-07-22 17:14:44,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 2277. [2022-07-22 17:14:44,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 1670 states have (on average 1.592814371257485) internal successors, (2660), 1778 states have internal predecessors, (2660), 503 states have call successors, (503), 92 states have call predecessors, (503), 103 states have return successors, (664), 492 states have call predecessors, (664), 499 states have call successors, (664) [2022-07-22 17:14:44,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 3827 transitions. [2022-07-22 17:14:44,590 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 3827 transitions. Word has length 75 [2022-07-22 17:14:44,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:14:44,590 INFO L495 AbstractCegarLoop]: Abstraction has 2277 states and 3827 transitions. [2022-07-22 17:14:44,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 17:14:44,590 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 3827 transitions. [2022-07-22 17:14:44,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-22 17:14:44,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:14:44,591 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:14:44,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 17:14:44,796 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,SelfDestructingSolverStorable12 [2022-07-22 17:14:44,797 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:14:44,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:14:44,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1788067737, now seen corresponding path program 1 times [2022-07-22 17:14:44,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:14:44,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407800678] [2022-07-22 17:14:44,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:14:44,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:14:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:45,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:14:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:45,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:14:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:45,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:14:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:45,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:14:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:45,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:14:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:45,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:14:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:45,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 17:14:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:45,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:14:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:45,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 17:14:45,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:14:45,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407800678] [2022-07-22 17:14:45,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407800678] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:14:45,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178486851] [2022-07-22 17:14:45,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:14:45,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:14:45,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:14:45,304 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) [2022-07-22 17:14:45,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 17:14:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:45,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 1498 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 17:14:45,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:14:45,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:14:45,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:14:45,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178486851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:14:45,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:14:45,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-22 17:14:45,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423265547] [2022-07-22 17:14:45,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:14:45,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:14:45,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:14:45,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:14:45,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:14:45,612 INFO L87 Difference]: Start difference. First operand 2277 states and 3827 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 17:14:46,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:14:46,152 INFO L93 Difference]: Finished difference Result 5185 states and 8787 transitions. [2022-07-22 17:14:46,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:14:46,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2022-07-22 17:14:46,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:14:46,166 INFO L225 Difference]: With dead ends: 5185 [2022-07-22 17:14:46,167 INFO L226 Difference]: Without dead ends: 2926 [2022-07-22 17:14:46,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:14:46,177 INFO L413 NwaCegarLoop]: 998 mSDtfsCounter, 877 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:14:46,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 1806 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:14:46,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2022-07-22 17:14:46,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 2718. [2022-07-22 17:14:46,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2718 states, 2013 states have (on average 1.6055638350720318) internal successors, (3232), 2138 states have internal predecessors, (3232), 581 states have call successors, (581), 111 states have call predecessors, (581), 123 states have return successors, (746), 568 states have call predecessors, (746), 577 states have call successors, (746) [2022-07-22 17:14:46,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2718 states to 2718 states and 4559 transitions. [2022-07-22 17:14:46,667 INFO L78 Accepts]: Start accepts. Automaton has 2718 states and 4559 transitions. Word has length 76 [2022-07-22 17:14:46,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:14:46,668 INFO L495 AbstractCegarLoop]: Abstraction has 2718 states and 4559 transitions. [2022-07-22 17:14:46,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 17:14:46,668 INFO L276 IsEmpty]: Start isEmpty. Operand 2718 states and 4559 transitions. [2022-07-22 17:14:46,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-22 17:14:46,669 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:14:46,670 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:14:46,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 17:14:46,875 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,SelfDestructingSolverStorable13 [2022-07-22 17:14:46,876 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:14:46,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:14:46,876 INFO L85 PathProgramCache]: Analyzing trace with hash -13813102, now seen corresponding path program 1 times [2022-07-22 17:14:46,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:14:46,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706534442] [2022-07-22 17:14:46,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:14:46,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:14:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:47,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:14:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:47,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:14:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:47,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:14:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:47,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:14:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:47,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:14:47,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:47,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:14:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:47,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 17:14:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:47,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 17:14:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:47,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 17:14:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:47,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 17:14:47,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:14:47,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706534442] [2022-07-22 17:14:47,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706534442] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:14:47,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:14:47,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 17:14:47,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122977148] [2022-07-22 17:14:47,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:14:47,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 17:14:47,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:14:47,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 17:14:47,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:14:47,376 INFO L87 Difference]: Start difference. First operand 2718 states and 4559 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 17:15:00,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:15:00,286 INFO L93 Difference]: Finished difference Result 10012 states and 17830 transitions. [2022-07-22 17:15:00,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 17:15:00,287 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2022-07-22 17:15:00,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:15:00,329 INFO L225 Difference]: With dead ends: 10012 [2022-07-22 17:15:00,329 INFO L226 Difference]: Without dead ends: 7312 [2022-07-22 17:15:00,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-22 17:15:00,344 INFO L413 NwaCegarLoop]: 982 mSDtfsCounter, 3633 mSDsluCounter, 1932 mSDsCounter, 0 mSdLazyCounter, 5662 mSolverCounterSat, 1276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3776 SdHoareTripleChecker+Valid, 2914 SdHoareTripleChecker+Invalid, 6938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1276 IncrementalHoareTripleChecker+Valid, 5662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-07-22 17:15:00,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3776 Valid, 2914 Invalid, 6938 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1276 Valid, 5662 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2022-07-22 17:15:00,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7312 states. [2022-07-22 17:15:01,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7312 to 6047. [2022-07-22 17:15:01,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6047 states, 4351 states have (on average 1.5835440128706044) internal successors, (6890), 4696 states have internal predecessors, (6890), 1402 states have call successors, (1402), 216 states have call predecessors, (1402), 293 states have return successors, (2343), 1400 states have call predecessors, (2343), 1396 states have call successors, (2343) [2022-07-22 17:15:01,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6047 states to 6047 states and 10635 transitions. [2022-07-22 17:15:01,234 INFO L78 Accepts]: Start accepts. Automaton has 6047 states and 10635 transitions. Word has length 78 [2022-07-22 17:15:01,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:15:01,235 INFO L495 AbstractCegarLoop]: Abstraction has 6047 states and 10635 transitions. [2022-07-22 17:15:01,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 17:15:01,235 INFO L276 IsEmpty]: Start isEmpty. Operand 6047 states and 10635 transitions. [2022-07-22 17:15:01,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-22 17:15:01,251 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:15:01,252 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:15:01,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 17:15:01,252 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:15:01,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:15:01,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1593721713, now seen corresponding path program 1 times [2022-07-22 17:15:01,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:15:01,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436829680] [2022-07-22 17:15:01,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:15:01,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:15:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:01,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:15:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:01,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:15:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:01,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:15:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:01,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:15:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:01,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:15:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:01,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:15:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:01,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 17:15:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:01,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 17:15:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:01,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 17:15:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:01,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 17:15:01,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:15:01,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436829680] [2022-07-22 17:15:01,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436829680] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:15:01,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:15:01,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:15:01,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755698907] [2022-07-22 17:15:01,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:15:01,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:15:01,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:15:01,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:15:01,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:15:01,621 INFO L87 Difference]: Start difference. First operand 6047 states and 10635 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 17:15:06,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:15:06,476 INFO L93 Difference]: Finished difference Result 13049 states and 23272 transitions. [2022-07-22 17:15:06,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:15:06,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2022-07-22 17:15:06,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:15:06,557 INFO L225 Difference]: With dead ends: 13049 [2022-07-22 17:15:06,557 INFO L226 Difference]: Without dead ends: 7020 [2022-07-22 17:15:06,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:15:06,582 INFO L413 NwaCegarLoop]: 889 mSDtfsCounter, 1346 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 2286 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 1923 SdHoareTripleChecker+Invalid, 2695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 2286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-22 17:15:06,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1454 Valid, 1923 Invalid, 2695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 2286 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-22 17:15:06,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7020 states. [2022-07-22 17:15:07,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7020 to 6055. [2022-07-22 17:15:07,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6055 states, 4357 states have (on average 1.5822813862749598) internal successors, (6894), 4702 states have internal predecessors, (6894), 1402 states have call successors, (1402), 220 states have call predecessors, (1402), 295 states have return successors, (2333), 1398 states have call predecessors, (2333), 1396 states have call successors, (2333) [2022-07-22 17:15:07,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6055 states to 6055 states and 10629 transitions. [2022-07-22 17:15:07,469 INFO L78 Accepts]: Start accepts. Automaton has 6055 states and 10629 transitions. Word has length 79 [2022-07-22 17:15:07,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:15:07,470 INFO L495 AbstractCegarLoop]: Abstraction has 6055 states and 10629 transitions. [2022-07-22 17:15:07,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 17:15:07,470 INFO L276 IsEmpty]: Start isEmpty. Operand 6055 states and 10629 transitions. [2022-07-22 17:15:07,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-22 17:15:07,471 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:15:07,471 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:15:07,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 17:15:07,471 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:15:07,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:15:07,472 INFO L85 PathProgramCache]: Analyzing trace with hash -650455551, now seen corresponding path program 1 times [2022-07-22 17:15:07,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:15:07,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745588785] [2022-07-22 17:15:07,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:15:07,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:15:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:07,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:15:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:07,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:15:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:07,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:15:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:07,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:15:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:07,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:15:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:07,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:15:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:07,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 17:15:07,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:07,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 17:15:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:07,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 17:15:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:07,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 17:15:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:07,703 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 17:15:07,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:15:07,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745588785] [2022-07-22 17:15:07,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745588785] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:15:07,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:15:07,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 17:15:07,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107924949] [2022-07-22 17:15:07,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:15:07,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 17:15:07,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:15:07,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 17:15:07,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:15:07,705 INFO L87 Difference]: Start difference. First operand 6055 states and 10629 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 17:15:18,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:15:18,868 INFO L93 Difference]: Finished difference Result 20704 states and 38900 transitions. [2022-07-22 17:15:18,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 17:15:18,869 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2022-07-22 17:15:18,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:15:18,956 INFO L225 Difference]: With dead ends: 20704 [2022-07-22 17:15:18,956 INFO L226 Difference]: Without dead ends: 14667 [2022-07-22 17:15:18,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-22 17:15:18,993 INFO L413 NwaCegarLoop]: 999 mSDtfsCounter, 3601 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 5588 mSolverCounterSat, 1256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3743 SdHoareTripleChecker+Valid, 3029 SdHoareTripleChecker+Invalid, 6844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1256 IncrementalHoareTripleChecker+Valid, 5588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:15:18,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3743 Valid, 3029 Invalid, 6844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1256 Valid, 5588 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-07-22 17:15:19,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14667 states. [2022-07-22 17:15:20,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14667 to 12004. [2022-07-22 17:15:20,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12004 states, 8635 states have (on average 1.5792704111175448) internal successors, (13637), 9320 states have internal predecessors, (13637), 2779 states have call successors, (2779), 434 states have call predecessors, (2779), 589 states have return successors, (5226), 2781 states have call predecessors, (5226), 2769 states have call successors, (5226) [2022-07-22 17:15:20,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12004 states to 12004 states and 21642 transitions. [2022-07-22 17:15:20,900 INFO L78 Accepts]: Start accepts. Automaton has 12004 states and 21642 transitions. Word has length 87 [2022-07-22 17:15:20,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:15:20,901 INFO L495 AbstractCegarLoop]: Abstraction has 12004 states and 21642 transitions. [2022-07-22 17:15:20,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 17:15:20,902 INFO L276 IsEmpty]: Start isEmpty. Operand 12004 states and 21642 transitions. [2022-07-22 17:15:20,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-22 17:15:20,903 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:15:20,903 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:15:20,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 17:15:20,904 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:15:20,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:15:20,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1775026134, now seen corresponding path program 1 times [2022-07-22 17:15:20,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:15:20,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912433150] [2022-07-22 17:15:20,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:15:20,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:15:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:21,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:15:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:21,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:15:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:21,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:15:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:21,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:15:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:21,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:15:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:21,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:15:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:21,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 17:15:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:21,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 17:15:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:21,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 17:15:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:21,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 17:15:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:21,185 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 17:15:21,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:15:21,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912433150] [2022-07-22 17:15:21,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912433150] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:15:21,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:15:21,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:15:21,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524038862] [2022-07-22 17:15:21,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:15:21,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:15:21,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:15:21,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:15:21,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:15:21,187 INFO L87 Difference]: Start difference. First operand 12004 states and 21642 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 17:15:27,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:15:27,779 INFO L93 Difference]: Finished difference Result 25897 states and 47846 transitions. [2022-07-22 17:15:27,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:15:27,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2022-07-22 17:15:27,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:15:27,878 INFO L225 Difference]: With dead ends: 25897 [2022-07-22 17:15:27,878 INFO L226 Difference]: Without dead ends: 13911 [2022-07-22 17:15:27,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:15:27,933 INFO L413 NwaCegarLoop]: 884 mSDtfsCounter, 808 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 2419 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 1957 SdHoareTripleChecker+Invalid, 2629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 2419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:15:27,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 1957 Invalid, 2629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 2419 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-22 17:15:27,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13911 states. [2022-07-22 17:15:29,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13911 to 12044. [2022-07-22 17:15:29,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12044 states, 8671 states have (on average 1.5773267212547573) internal successors, (13677), 9348 states have internal predecessors, (13677), 2779 states have call successors, (2779), 450 states have call predecessors, (2779), 593 states have return successors, (5212), 2777 states have call predecessors, (5212), 2769 states have call successors, (5212) [2022-07-22 17:15:29,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12044 states to 12044 states and 21668 transitions. [2022-07-22 17:15:29,821 INFO L78 Accepts]: Start accepts. Automaton has 12044 states and 21668 transitions. Word has length 88 [2022-07-22 17:15:29,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:15:29,821 INFO L495 AbstractCegarLoop]: Abstraction has 12044 states and 21668 transitions. [2022-07-22 17:15:29,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 17:15:29,822 INFO L276 IsEmpty]: Start isEmpty. Operand 12044 states and 21668 transitions. [2022-07-22 17:15:29,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-22 17:15:29,824 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:15:29,824 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:15:29,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 17:15:29,824 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:15:29,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:15:29,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1227574607, now seen corresponding path program 1 times [2022-07-22 17:15:29,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:15:29,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353029864] [2022-07-22 17:15:29,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:15:29,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:15:29,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:30,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:15:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:30,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:15:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:30,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:15:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:30,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:15:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:30,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:15:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:30,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:15:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:30,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 17:15:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:30,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 17:15:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:30,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 17:15:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:30,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:15:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:30,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 17:15:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:30,210 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:15:30,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:15:30,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353029864] [2022-07-22 17:15:30,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353029864] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:15:30,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:15:30,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 17:15:30,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308469763] [2022-07-22 17:15:30,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:15:30,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 17:15:30,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:15:30,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 17:15:30,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:15:30,213 INFO L87 Difference]: Start difference. First operand 12044 states and 21668 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 17:15:45,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:15:45,497 INFO L93 Difference]: Finished difference Result 41376 states and 83780 transitions. [2022-07-22 17:15:45,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 17:15:45,498 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2022-07-22 17:15:45,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:15:45,729 INFO L225 Difference]: With dead ends: 41376 [2022-07-22 17:15:45,729 INFO L226 Difference]: Without dead ends: 29350 [2022-07-22 17:15:45,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-22 17:15:45,819 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 2467 mSDsluCounter, 2055 mSDsCounter, 0 mSdLazyCounter, 5932 mSolverCounterSat, 834 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2609 SdHoareTripleChecker+Valid, 3057 SdHoareTripleChecker+Invalid, 6766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 834 IncrementalHoareTripleChecker+Valid, 5932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:15:45,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2609 Valid, 3057 Invalid, 6766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [834 Valid, 5932 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2022-07-22 17:15:45,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29350 states. [2022-07-22 17:15:49,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29350 to 24023. [2022-07-22 17:15:49,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24023 states, 17295 states have (on average 1.5746747614917607) internal successors, (27234), 18644 states have internal predecessors, (27234), 5538 states have call successors, (5538), 894 states have call predecessors, (5538), 1189 states have return successors, (12117), 5548 states have call predecessors, (12117), 5520 states have call successors, (12117) [2022-07-22 17:15:49,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24023 states to 24023 states and 44889 transitions. [2022-07-22 17:15:49,314 INFO L78 Accepts]: Start accepts. Automaton has 24023 states and 44889 transitions. Word has length 97 [2022-07-22 17:15:49,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:15:49,315 INFO L495 AbstractCegarLoop]: Abstraction has 24023 states and 44889 transitions. [2022-07-22 17:15:49,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 17:15:49,315 INFO L276 IsEmpty]: Start isEmpty. Operand 24023 states and 44889 transitions. [2022-07-22 17:15:49,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-22 17:15:49,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:15:49,316 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:15:49,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 17:15:49,317 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:15:49,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:15:49,317 INFO L85 PathProgramCache]: Analyzing trace with hash -203367196, now seen corresponding path program 1 times [2022-07-22 17:15:49,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:15:49,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186507484] [2022-07-22 17:15:49,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:15:49,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:15:49,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:49,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:15:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:49,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:15:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:49,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:15:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:49,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:15:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:49,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:15:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:49,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:15:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:49,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 17:15:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:49,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 17:15:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:49,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 17:15:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:49,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:15:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:49,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:15:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:49,523 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 17:15:49,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:15:49,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186507484] [2022-07-22 17:15:49,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186507484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:15:49,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:15:49,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:15:49,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512789033] [2022-07-22 17:15:49,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:15:49,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:15:49,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:15:49,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:15:49,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:15:49,525 INFO L87 Difference]: Start difference. First operand 24023 states and 44889 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:15:56,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:15:56,860 INFO L93 Difference]: Finished difference Result 51819 states and 101298 transitions. [2022-07-22 17:15:56,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:15:56,861 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 98 [2022-07-22 17:15:56,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:15:57,185 INFO L225 Difference]: With dead ends: 51819 [2022-07-22 17:15:57,185 INFO L226 Difference]: Without dead ends: 27814 [2022-07-22 17:15:57,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:15:57,316 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 1367 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 2703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:15:57,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1901 Invalid, 2703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-22 17:15:57,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27814 states. [2022-07-22 17:16:00,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27814 to 24103. [2022-07-22 17:16:00,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24103 states, 17367 states have (on average 1.5727529222087868) internal successors, (27314), 18716 states have internal predecessors, (27314), 5538 states have call successors, (5538), 910 states have call predecessors, (5538), 1197 states have return successors, (12101), 5540 states have call predecessors, (12101), 5520 states have call successors, (12101) [2022-07-22 17:16:00,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24103 states to 24103 states and 44953 transitions. [2022-07-22 17:16:00,693 INFO L78 Accepts]: Start accepts. Automaton has 24103 states and 44953 transitions. Word has length 98 [2022-07-22 17:16:00,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:16:00,693 INFO L495 AbstractCegarLoop]: Abstraction has 24103 states and 44953 transitions. [2022-07-22 17:16:00,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:16:00,693 INFO L276 IsEmpty]: Start isEmpty. Operand 24103 states and 44953 transitions. [2022-07-22 17:16:00,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-22 17:16:00,695 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:16:00,695 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1] [2022-07-22 17:16:00,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 17:16:00,696 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:16:00,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:16:00,696 INFO L85 PathProgramCache]: Analyzing trace with hash 770009700, now seen corresponding path program 1 times [2022-07-22 17:16:00,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:16:00,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610657715] [2022-07-22 17:16:00,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:16:00,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:16:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:00,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:16:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:00,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:00,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:16:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:00,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:00,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:16:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:00,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:16:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:00,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 17:16:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:00,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 17:16:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:00,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 17:16:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:00,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:16:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:00,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:16:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:00,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 17:16:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:00,929 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 17:16:00,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:16:00,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610657715] [2022-07-22 17:16:00,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610657715] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:16:00,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:16:00,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 17:16:00,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425091243] [2022-07-22 17:16:00,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:16:00,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 17:16:00,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:16:00,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 17:16:00,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:16:00,930 INFO L87 Difference]: Start difference. First operand 24103 states and 44953 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 17:16:18,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:16:18,403 INFO L93 Difference]: Finished difference Result 82076 states and 183786 transitions. [2022-07-22 17:16:18,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 17:16:18,404 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2022-07-22 17:16:18,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:16:18,936 INFO L225 Difference]: With dead ends: 82076 [2022-07-22 17:16:18,937 INFO L226 Difference]: Without dead ends: 57991 [2022-07-22 17:16:19,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-22 17:16:19,109 INFO L413 NwaCegarLoop]: 1054 mSDtfsCounter, 3504 mSDsluCounter, 2194 mSDsCounter, 0 mSdLazyCounter, 5696 mSolverCounterSat, 1211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3645 SdHoareTripleChecker+Valid, 3248 SdHoareTripleChecker+Invalid, 6907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1211 IncrementalHoareTripleChecker+Valid, 5696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-07-22 17:16:19,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3645 Valid, 3248 Invalid, 6907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1211 Valid, 5696 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-07-22 17:16:19,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57991 states. [2022-07-22 17:16:26,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57991 to 48198. [2022-07-22 17:16:26,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48198 states, 34731 states have (on average 1.5702110506463967) internal successors, (54535), 37424 states have internal predecessors, (54535), 11061 states have call successors, (11061), 1814 states have call predecessors, (11061), 2405 states have return successors, (29854), 11087 states have call predecessors, (29854), 11027 states have call successors, (29854) [2022-07-22 17:16:27,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48198 states to 48198 states and 95450 transitions. [2022-07-22 17:16:27,017 INFO L78 Accepts]: Start accepts. Automaton has 48198 states and 95450 transitions. Word has length 108 [2022-07-22 17:16:27,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:16:27,017 INFO L495 AbstractCegarLoop]: Abstraction has 48198 states and 95450 transitions. [2022-07-22 17:16:27,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 17:16:27,017 INFO L276 IsEmpty]: Start isEmpty. Operand 48198 states and 95450 transitions. [2022-07-22 17:16:27,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 17:16:27,020 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:16:27,020 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1] [2022-07-22 17:16:27,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 17:16:27,020 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:16:27,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:16:27,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1979288759, now seen corresponding path program 1 times [2022-07-22 17:16:27,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:16:27,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480910970] [2022-07-22 17:16:27,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:16:27,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:16:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:27,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:16:27,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:27,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:27,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:16:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:27,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:27,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:16:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:27,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:16:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:27,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 17:16:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:27,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 17:16:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:27,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 17:16:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:27,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:16:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:27,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:16:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:27,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 17:16:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:27,233 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-22 17:16:27,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:16:27,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480910970] [2022-07-22 17:16:27,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480910970] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:16:27,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:16:27,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:16:27,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769370250] [2022-07-22 17:16:27,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:16:27,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:16:27,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:16:27,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:16:27,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:16:27,235 INFO L87 Difference]: Start difference. First operand 48198 states and 95450 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:16:40,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:16:40,234 INFO L93 Difference]: Finished difference Result 103818 states and 222852 transitions. [2022-07-22 17:16:40,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:16:40,237 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2022-07-22 17:16:40,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:16:40,914 INFO L225 Difference]: With dead ends: 103818 [2022-07-22 17:16:40,914 INFO L226 Difference]: Without dead ends: 55590 [2022-07-22 17:16:41,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:16:41,248 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 1373 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 2285 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 2702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 2285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:16:41,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1483 Valid, 1892 Invalid, 2702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 2285 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-22 17:16:41,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55590 states. [2022-07-22 17:16:48,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55590 to 48166. [2022-07-22 17:16:48,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48166 states, 34744 states have (on average 1.5680117430347686) internal successors, (54479), 37433 states have internal predecessors, (54479), 11008 states have call successors, (11008), 1827 states have call predecessors, (11008), 2413 states have return successors, (29599), 11020 states have call predecessors, (29599), 10974 states have call successors, (29599) [2022-07-22 17:16:49,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48166 states to 48166 states and 95086 transitions. [2022-07-22 17:16:49,119 INFO L78 Accepts]: Start accepts. Automaton has 48166 states and 95086 transitions. Word has length 109 [2022-07-22 17:16:49,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:16:49,120 INFO L495 AbstractCegarLoop]: Abstraction has 48166 states and 95086 transitions. [2022-07-22 17:16:49,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:16:49,120 INFO L276 IsEmpty]: Start isEmpty. Operand 48166 states and 95086 transitions. [2022-07-22 17:16:49,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-22 17:16:49,127 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:16:49,128 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:16:49,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 17:16:49,128 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:16:49,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:16:49,128 INFO L85 PathProgramCache]: Analyzing trace with hash 435133552, now seen corresponding path program 1 times [2022-07-22 17:16:49,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:16:49,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998865246] [2022-07-22 17:16:49,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:16:49,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:16:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:49,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:16:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:49,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:49,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:16:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:49,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:49,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:16:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:49,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:16:49,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:49,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:49,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:16:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:49,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:16:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:49,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:16:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:49,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:16:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:49,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:16:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:49,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:16:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:49,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:16:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:49,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 17:16:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:49,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 17:16:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:49,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-22 17:16:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:49,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-22 17:16:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:49,714 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 17:16:49,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:16:49,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998865246] [2022-07-22 17:16:49,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998865246] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:16:49,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:16:49,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 17:16:49,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994031129] [2022-07-22 17:16:49,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:16:49,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 17:16:49,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:16:49,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 17:16:49,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:16:49,716 INFO L87 Difference]: Start difference. First operand 48166 states and 95086 transitions. Second operand has 13 states, 13 states have (on average 8.384615384615385) internal successors, (109), 6 states have internal predecessors, (109), 3 states have call successors, (20), 7 states have call predecessors, (20), 5 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-22 17:17:18,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:17:18,219 INFO L93 Difference]: Finished difference Result 130657 states and 303301 transitions. [2022-07-22 17:17:18,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 17:17:18,219 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.384615384615385) internal successors, (109), 6 states have internal predecessors, (109), 3 states have call successors, (20), 7 states have call predecessors, (20), 5 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) Word has length 155 [2022-07-22 17:17:18,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:17:19,477 INFO L225 Difference]: With dead ends: 130657 [2022-07-22 17:17:19,478 INFO L226 Difference]: Without dead ends: 100001 [2022-07-22 17:17:19,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=284, Invalid=976, Unknown=0, NotChecked=0, Total=1260 [2022-07-22 17:17:19,767 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 3535 mSDsluCounter, 3603 mSDsCounter, 0 mSdLazyCounter, 10520 mSolverCounterSat, 1583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3664 SdHoareTripleChecker+Valid, 4611 SdHoareTripleChecker+Invalid, 12103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1583 IncrementalHoareTripleChecker+Valid, 10520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:17:19,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3664 Valid, 4611 Invalid, 12103 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1583 Valid, 10520 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2022-07-22 17:17:19,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100001 states. [2022-07-22 17:17:32,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100001 to 76578. [2022-07-22 17:17:32,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76578 states, 56134 states have (on average 1.5703495207895393) internal successors, (88150), 60137 states have internal predecessors, (88150), 16142 states have call successors, (16142), 2883 states have call predecessors, (16142), 4301 states have return successors, (51073), 16616 states have call predecessors, (51073), 16092 states have call successors, (51073) [2022-07-22 17:17:33,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76578 states to 76578 states and 155365 transitions. [2022-07-22 17:17:33,328 INFO L78 Accepts]: Start accepts. Automaton has 76578 states and 155365 transitions. Word has length 155 [2022-07-22 17:17:33,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:17:33,328 INFO L495 AbstractCegarLoop]: Abstraction has 76578 states and 155365 transitions. [2022-07-22 17:17:33,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.384615384615385) internal successors, (109), 6 states have internal predecessors, (109), 3 states have call successors, (20), 7 states have call predecessors, (20), 5 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-22 17:17:33,329 INFO L276 IsEmpty]: Start isEmpty. Operand 76578 states and 155365 transitions. [2022-07-22 17:17:33,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-22 17:17:33,336 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:17:33,337 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:17:33,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 17:17:33,337 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:17:33,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:17:33,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1908107821, now seen corresponding path program 1 times [2022-07-22 17:17:33,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:17:33,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196985895] [2022-07-22 17:17:33,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:17:33,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:17:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:33,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:17:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:33,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:17:33,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:33,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:17:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:33,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:17:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:33,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:17:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:33,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:17:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:33,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:17:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:33,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:17:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:33,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 17:17:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:33,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:17:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:33,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:17:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:33,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:17:33,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:33,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:17:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:33,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:17:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:33,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:17:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:33,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:17:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:33,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 17:17:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:33,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-22 17:17:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:33,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 17:17:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:33,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-22 17:17:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:33,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-22 17:17:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:33,903 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 27 proven. 25 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-22 17:17:33,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:17:33,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196985895] [2022-07-22 17:17:33,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196985895] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:17:33,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504827232] [2022-07-22 17:17:33,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:17:33,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:17:33,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:17:33,905 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) [2022-07-22 17:17:33,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 17:17:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:34,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 2414 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 17:17:34,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:17:34,234 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-22 17:17:34,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:17:34,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504827232] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:17:34,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:17:34,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2022-07-22 17:17:34,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015831393] [2022-07-22 17:17:34,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:17:34,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:17:34,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:17:34,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:17:34,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:17:34,236 INFO L87 Difference]: Start difference. First operand 76578 states and 155365 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19)