./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c 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/ntdrivers/floppy.i.cil-1.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 986945cc1d8674c803a19893f7d2aec71de46e5693e78eba56c7bdad24c6e341 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 22:17:33,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 22:17:33,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 22:17:33,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 22:17:33,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 22:17:33,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 22:17:33,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 22:17:33,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 22:17:33,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 22:17:33,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 22:17:33,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 22:17:33,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 22:17:33,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 22:17:33,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 22:17:33,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 22:17:33,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 22:17:33,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 22:17:33,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 22:17:33,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 22:17:33,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 22:17:33,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 22:17:33,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 22:17:33,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 22:17:33,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 22:17:33,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 22:17:33,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 22:17:33,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 22:17:33,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 22:17:33,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 22:17:33,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 22:17:33,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 22:17:33,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 22:17:33,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 22:17:33,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 22:17:33,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 22:17:33,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 22:17:33,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 22:17:33,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 22:17:33,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 22:17:33,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 22:17:33,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 22:17:33,931 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 22:17:33,955 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 22:17:33,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 22:17:33,956 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 22:17:33,956 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 22:17:33,957 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 22:17:33,957 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 22:17:33,957 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 22:17:33,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 22:17:33,957 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 22:17:33,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 22:17:33,958 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 22:17:33,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 22:17:33,958 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 22:17:33,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 22:17:33,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 22:17:33,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 22:17:33,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 22:17:33,959 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 22:17:33,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 22:17:33,959 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 22:17:33,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 22:17:33,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 22:17:33,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 22:17:33,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 22:17:33,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 22:17:33,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 22:17:33,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 22:17:33,960 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 22:17:33,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 22:17:33,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 22:17:33,961 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 22:17:33,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 22:17:33,962 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 22:17:33,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 22:17:33,962 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 22:17:33,962 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 986945cc1d8674c803a19893f7d2aec71de46e5693e78eba56c7bdad24c6e341 [2023-02-17 22:17:34,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 22:17:34,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 22:17:34,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 22:17:34,192 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 22:17:34,192 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 22:17:34,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c [2023-02-17 22:17:35,186 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 22:17:35,491 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 22:17:35,492 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c [2023-02-17 22:17:35,519 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a56ccebf/a95224447ec04e56ada1fc21e4a93ea2/FLAG219e2467e [2023-02-17 22:17:35,529 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a56ccebf/a95224447ec04e56ada1fc21e4a93ea2 [2023-02-17 22:17:35,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 22:17:35,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 22:17:35,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 22:17:35,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 22:17:35,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 22:17:35,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 10:17:35" (1/1) ... [2023-02-17 22:17:35,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59797739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:17:35, skipping insertion in model container [2023-02-17 22:17:35,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 10:17:35" (1/1) ... [2023-02-17 22:17:35,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 22:17:35,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 22:17:35,987 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c[76734,76747] [2023-02-17 22:17:36,006 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-17 22:17:36,020 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-17 22:17:36,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 22:17:36,347 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 22:17:36,397 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c[76734,76747] [2023-02-17 22:17:36,403 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-17 22:17:36,405 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-17 22:17:36,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 22:17:36,616 INFO L208 MainTranslator]: Completed translation [2023-02-17 22:17:36,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:17:36 WrapperNode [2023-02-17 22:17:36,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 22:17:36,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 22:17:36,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 22:17:36,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 22:17:36,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:17:36" (1/1) ... [2023-02-17 22:17:36,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:17:36" (1/1) ... [2023-02-17 22:17:36,772 INFO L138 Inliner]: procedures = 126, calls = 2882, calls flagged for inlining = 36, calls inlined = 25, statements flattened = 3051 [2023-02-17 22:17:36,773 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 22:17:36,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 22:17:36,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 22:17:36,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 22:17:36,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:17:36" (1/1) ... [2023-02-17 22:17:36,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:17:36" (1/1) ... [2023-02-17 22:17:36,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:17:36" (1/1) ... [2023-02-17 22:17:36,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:17:36" (1/1) ... [2023-02-17 22:17:36,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:17:36" (1/1) ... [2023-02-17 22:17:36,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:17:36" (1/1) ... [2023-02-17 22:17:36,937 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:17:36" (1/1) ... [2023-02-17 22:17:36,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:17:36" (1/1) ... [2023-02-17 22:17:36,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 22:17:36,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 22:17:36,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 22:17:36,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 22:17:36,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:17:36" (1/1) ... [2023-02-17 22:17:36,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 22:17:36,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 22:17:36,990 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) [2023-02-17 22:17:36,995 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 [2023-02-17 22:17:37,015 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2023-02-17 22:17:37,016 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2023-02-17 22:17:37,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-02-17 22:17:37,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-02-17 22:17:37,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-02-17 22:17:37,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-17 22:17:37,016 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2023-02-17 22:17:37,016 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2023-02-17 22:17:37,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-02-17 22:17:37,016 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-02-17 22:17:37,017 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2023-02-17 22:17:37,017 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2023-02-17 22:17:37,017 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2023-02-17 22:17:37,017 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2023-02-17 22:17:37,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-17 22:17:37,017 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2023-02-17 22:17:37,017 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2023-02-17 22:17:37,018 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2023-02-17 22:17:37,018 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2023-02-17 22:17:37,018 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2023-02-17 22:17:37,018 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2023-02-17 22:17:37,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-02-17 22:17:37,018 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-02-17 22:17:37,019 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2023-02-17 22:17:37,019 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2023-02-17 22:17:37,019 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2023-02-17 22:17:37,020 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2023-02-17 22:17:37,020 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2023-02-17 22:17:37,020 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2023-02-17 22:17:37,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-17 22:17:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 22:17:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2023-02-17 22:17:37,022 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2023-02-17 22:17:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2023-02-17 22:17:37,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2023-02-17 22:17:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-17 22:17:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-17 22:17:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2023-02-17 22:17:37,022 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2023-02-17 22:17:37,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-17 22:17:37,023 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2023-02-17 22:17:37,023 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2023-02-17 22:17:37,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 22:17:37,023 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2023-02-17 22:17:37,023 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2023-02-17 22:17:37,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 22:17:37,023 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2023-02-17 22:17:37,023 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2023-02-17 22:17:37,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-02-17 22:17:37,024 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2023-02-17 22:17:37,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2023-02-17 22:17:37,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 22:17:37,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 22:17:37,352 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 22:17:37,354 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 22:17:37,397 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 22:17:37,408 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-02-17 22:17:37,408 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-02-17 22:17:37,416 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 22:17:37,546 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2023-02-17 22:17:37,547 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2023-02-17 22:17:37,570 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 22:17:37,582 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2023-02-17 22:17:37,582 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2023-02-17 22:17:37,656 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 22:17:37,690 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2023-02-17 22:17:37,690 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2023-02-17 22:17:37,691 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 22:17:37,691 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 22:17:37,691 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 22:17:37,763 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2023-02-17 22:17:37,786 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2023-02-17 22:17:37,787 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2023-02-17 22:17:37,787 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2023-02-17 22:17:37,787 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2023-02-17 22:17:37,787 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2023-02-17 22:17:37,790 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 22:17:37,794 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 22:17:37,800 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 22:17:38,160 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2023-02-17 22:17:38,160 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2023-02-17 22:17:38,161 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2023-02-17 22:17:38,161 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2023-02-17 22:17:38,161 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##124: assume !false; [2023-02-17 22:17:38,161 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume false; [2023-02-17 22:17:38,199 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 22:17:38,233 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-02-17 22:17:38,233 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-02-17 22:17:38,239 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 22:17:38,240 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 22:17:38,241 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 22:17:38,242 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 22:17:38,242 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 22:17:38,244 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 22:17:38,244 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 22:17:38,245 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 22:17:41,456 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !false; [2023-02-17 22:17:41,456 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume false; [2023-02-17 22:17:41,457 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##76: assume false; [2023-02-17 22:17:41,457 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##177: assume !false; [2023-02-17 22:17:41,457 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##176: assume false; [2023-02-17 22:17:41,457 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume !false; [2023-02-17 22:17:41,457 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2023-02-17 22:17:41,457 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2023-02-17 22:17:41,457 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2023-02-17 22:17:41,457 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2023-02-17 22:17:41,457 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2023-02-17 22:17:41,457 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2023-02-17 22:17:41,457 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##210: assume false; [2023-02-17 22:17:41,457 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##211: assume !false; [2023-02-17 22:17:41,457 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##108: assume !false; [2023-02-17 22:17:41,457 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume false; [2023-02-17 22:17:41,469 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 22:17:41,478 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 22:17:41,478 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-17 22:17:41,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:17:41 BoogieIcfgContainer [2023-02-17 22:17:41,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 22:17:41,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 22:17:41,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 22:17:41,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 22:17:41,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 10:17:35" (1/3) ... [2023-02-17 22:17:41,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511c9b2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 10:17:41, skipping insertion in model container [2023-02-17 22:17:41,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:17:36" (2/3) ... [2023-02-17 22:17:41,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511c9b2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 10:17:41, skipping insertion in model container [2023-02-17 22:17:41,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:17:41" (3/3) ... [2023-02-17 22:17:41,486 INFO L112 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-1.c [2023-02-17 22:17:41,497 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 22:17:41,498 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 22:17:41,553 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 22:17:41,560 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@dda6339, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 22:17:41,561 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 22:17:41,568 INFO L276 IsEmpty]: Start isEmpty. Operand has 564 states, 453 states have (on average 1.5011037527593818) internal successors, (680), 486 states have internal predecessors, (680), 90 states have call successors, (90), 19 states have call predecessors, (90), 19 states have return successors, (90), 84 states have call predecessors, (90), 90 states have call successors, (90) [2023-02-17 22:17:41,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-17 22:17:41,575 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:17:41,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:17:41,576 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:17:41,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:17:41,581 INFO L85 PathProgramCache]: Analyzing trace with hash -197079634, now seen corresponding path program 1 times [2023-02-17 22:17:41,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:17:41,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882529772] [2023-02-17 22:17:41,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:17:41,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:17:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:17:42,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 22:17:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:17:42,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-17 22:17:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:17:42,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:17:42,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:17:42,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882529772] [2023-02-17 22:17:42,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882529772] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 22:17:42,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 22:17:42,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 22:17:42,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732212070] [2023-02-17 22:17:42,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 22:17:42,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 22:17:42,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:17:42,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 22:17:42,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 22:17:42,182 INFO L87 Difference]: Start difference. First operand has 564 states, 453 states have (on average 1.5011037527593818) internal successors, (680), 486 states have internal predecessors, (680), 90 states have call successors, (90), 19 states have call predecessors, (90), 19 states have return successors, (90), 84 states have call predecessors, (90), 90 states have call successors, (90) Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 22:17:46,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:17:46,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:17:46,724 INFO L93 Difference]: Finished difference Result 1130 states and 1773 transitions. [2023-02-17 22:17:46,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 22:17:46,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2023-02-17 22:17:46,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:17:46,736 INFO L225 Difference]: With dead ends: 1130 [2023-02-17 22:17:46,736 INFO L226 Difference]: Without dead ends: 639 [2023-02-17 22:17:46,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-17 22:17:46,768 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 412 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 207 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 2006 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-02-17 22:17:46,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 2006 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 856 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2023-02-17 22:17:46,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2023-02-17 22:17:46,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 563. [2023-02-17 22:17:46,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 452 states have (on average 1.4623893805309736) internal successors, (661), 483 states have internal predecessors, (661), 90 states have call successors, (90), 21 states have call predecessors, (90), 20 states have return successors, (67), 65 states have call predecessors, (67), 67 states have call successors, (67) [2023-02-17 22:17:46,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 818 transitions. [2023-02-17 22:17:46,828 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 818 transitions. Word has length 26 [2023-02-17 22:17:46,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:17:46,828 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 818 transitions. [2023-02-17 22:17:46,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 22:17:46,828 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 818 transitions. [2023-02-17 22:17:46,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-17 22:17:46,830 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:17:46,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:17:46,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 22:17:46,830 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:17:46,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:17:46,831 INFO L85 PathProgramCache]: Analyzing trace with hash -169212496, now seen corresponding path program 1 times [2023-02-17 22:17:46,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:17:46,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61409103] [2023-02-17 22:17:46,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:17:46,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:17:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:17:47,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 22:17:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:17:47,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-17 22:17:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:17:47,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:17:47,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:17:47,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61409103] [2023-02-17 22:17:47,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61409103] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 22:17:47,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 22:17:47,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 22:17:47,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288722116] [2023-02-17 22:17:47,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 22:17:47,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 22:17:47,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:17:47,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 22:17:47,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 22:17:47,055 INFO L87 Difference]: Start difference. First operand 563 states and 818 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 22:17:52,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:17:52,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:17:52,581 INFO L93 Difference]: Finished difference Result 1183 states and 1738 transitions. [2023-02-17 22:17:52,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 22:17:52,593 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2023-02-17 22:17:52,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:17:52,596 INFO L225 Difference]: With dead ends: 1183 [2023-02-17 22:17:52,596 INFO L226 Difference]: Without dead ends: 639 [2023-02-17 22:17:52,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-17 22:17:52,598 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 374 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 203 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-02-17 22:17:52,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 2604 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1047 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2023-02-17 22:17:52,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2023-02-17 22:17:52,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 563. [2023-02-17 22:17:52,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 452 states have (on average 1.4601769911504425) internal successors, (660), 483 states have internal predecessors, (660), 90 states have call successors, (90), 21 states have call predecessors, (90), 20 states have return successors, (67), 65 states have call predecessors, (67), 67 states have call successors, (67) [2023-02-17 22:17:52,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 817 transitions. [2023-02-17 22:17:52,634 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 817 transitions. Word has length 29 [2023-02-17 22:17:52,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:17:52,635 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 817 transitions. [2023-02-17 22:17:52,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 22:17:52,635 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 817 transitions. [2023-02-17 22:17:52,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-17 22:17:52,636 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:17:52,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:17:52,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 22:17:52,636 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:17:52,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:17:52,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1081663514, now seen corresponding path program 1 times [2023-02-17 22:17:52,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:17:52,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950070559] [2023-02-17 22:17:52,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:17:52,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:17:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:17:52,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 22:17:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:17:52,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-17 22:17:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:17:52,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:17:52,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:17:52,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950070559] [2023-02-17 22:17:52,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950070559] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 22:17:52,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 22:17:52,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 22:17:52,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776040645] [2023-02-17 22:17:52,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 22:17:52,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 22:17:52,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:17:52,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 22:17:52,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 22:17:52,967 INFO L87 Difference]: Start difference. First operand 563 states and 817 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 22:17:56,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:17:57,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:17:57,958 INFO L93 Difference]: Finished difference Result 1494 states and 2232 transitions. [2023-02-17 22:17:57,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 22:17:57,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2023-02-17 22:17:57,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:17:57,964 INFO L225 Difference]: With dead ends: 1494 [2023-02-17 22:17:57,964 INFO L226 Difference]: Without dead ends: 1093 [2023-02-17 22:17:57,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-17 22:17:57,966 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 1344 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 361 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 2251 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-02-17 22:17:57,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 2251 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 1114 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2023-02-17 22:17:57,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2023-02-17 22:17:57,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 979. [2023-02-17 22:17:57,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 813 states have (on average 1.4452644526445264) internal successors, (1175), 840 states have internal predecessors, (1175), 124 states have call successors, (124), 38 states have call predecessors, (124), 41 states have return successors, (147), 108 states have call predecessors, (147), 109 states have call successors, (147) [2023-02-17 22:17:57,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1446 transitions. [2023-02-17 22:17:57,999 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1446 transitions. Word has length 33 [2023-02-17 22:17:57,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:17:57,999 INFO L495 AbstractCegarLoop]: Abstraction has 979 states and 1446 transitions. [2023-02-17 22:17:57,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 22:17:57,999 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1446 transitions. [2023-02-17 22:17:58,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-17 22:17:58,001 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:17:58,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:17:58,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 22:17:58,002 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:17:58,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:17:58,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1331144769, now seen corresponding path program 1 times [2023-02-17 22:17:58,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:17:58,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029027161] [2023-02-17 22:17:58,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:17:58,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:17:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:17:58,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 22:17:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:17:58,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-17 22:17:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:17:58,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-02-17 22:17:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:17:58,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:17:58,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:17:58,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029027161] [2023-02-17 22:17:58,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029027161] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 22:17:58,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 22:17:58,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 22:17:58,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775710160] [2023-02-17 22:17:58,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 22:17:58,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 22:17:58,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:17:58,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 22:17:58,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 22:17:58,329 INFO L87 Difference]: Start difference. First operand 979 states and 1446 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 22:18:01,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:18:02,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:18:02,442 INFO L93 Difference]: Finished difference Result 1814 states and 2766 transitions. [2023-02-17 22:18:02,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 22:18:02,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2023-02-17 22:18:02,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:18:02,449 INFO L225 Difference]: With dead ends: 1814 [2023-02-17 22:18:02,449 INFO L226 Difference]: Without dead ends: 1796 [2023-02-17 22:18:02,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-17 22:18:02,451 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 1471 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 344 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1899 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-02-17 22:18:02,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 1899 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 889 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2023-02-17 22:18:02,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2023-02-17 22:18:02,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1569. [2023-02-17 22:18:02,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1311 states have (on average 1.4683447749809306) internal successors, (1925), 1356 states have internal predecessors, (1925), 189 states have call successors, (189), 61 states have call predecessors, (189), 68 states have return successors, (250), 164 states have call predecessors, (250), 174 states have call successors, (250) [2023-02-17 22:18:02,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2364 transitions. [2023-02-17 22:18:02,503 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2364 transitions. Word has length 45 [2023-02-17 22:18:02,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:18:02,503 INFO L495 AbstractCegarLoop]: Abstraction has 1569 states and 2364 transitions. [2023-02-17 22:18:02,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 22:18:02,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2364 transitions. [2023-02-17 22:18:02,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-17 22:18:02,505 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:18:02,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:18:02,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-17 22:18:02,506 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:18:02,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:18:02,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1069708837, now seen corresponding path program 1 times [2023-02-17 22:18:02,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:18:02,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296512704] [2023-02-17 22:18:02,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:18:02,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:18:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:02,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 22:18:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:02,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-17 22:18:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:02,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:18:02,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:18:02,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296512704] [2023-02-17 22:18:02,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296512704] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 22:18:02,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 22:18:02,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 22:18:02,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810040770] [2023-02-17 22:18:02,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 22:18:02,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 22:18:02,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:18:02,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 22:18:02,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 22:18:02,657 INFO L87 Difference]: Start difference. First operand 1569 states and 2364 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 22:18:06,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:18:06,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:18:06,732 INFO L93 Difference]: Finished difference Result 1793 states and 2748 transitions. [2023-02-17 22:18:06,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 22:18:06,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2023-02-17 22:18:06,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:18:06,739 INFO L225 Difference]: With dead ends: 1793 [2023-02-17 22:18:06,739 INFO L226 Difference]: Without dead ends: 1789 [2023-02-17 22:18:06,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-17 22:18:06,740 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 485 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 209 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-02-17 22:18:06,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 1895 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 841 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2023-02-17 22:18:06,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2023-02-17 22:18:06,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1602. [2023-02-17 22:18:06,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1602 states, 1342 states have (on average 1.4679582712369597) internal successors, (1970), 1384 states have internal predecessors, (1970), 190 states have call successors, (190), 63 states have call predecessors, (190), 69 states have return successors, (251), 165 states have call predecessors, (251), 175 states have call successors, (251) [2023-02-17 22:18:06,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 2411 transitions. [2023-02-17 22:18:06,784 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 2411 transitions. Word has length 43 [2023-02-17 22:18:06,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:18:06,785 INFO L495 AbstractCegarLoop]: Abstraction has 1602 states and 2411 transitions. [2023-02-17 22:18:06,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 22:18:06,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 2411 transitions. [2023-02-17 22:18:06,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-17 22:18:06,786 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:18:06,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:18:06,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-17 22:18:06,787 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:18:06,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:18:06,787 INFO L85 PathProgramCache]: Analyzing trace with hash -897411344, now seen corresponding path program 1 times [2023-02-17 22:18:06,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:18:06,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006137860] [2023-02-17 22:18:06,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:18:06,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:18:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:06,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 22:18:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:06,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-17 22:18:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:06,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:18:06,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:18:06,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006137860] [2023-02-17 22:18:06,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006137860] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 22:18:06,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 22:18:06,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 22:18:06,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788181532] [2023-02-17 22:18:06,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 22:18:06,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 22:18:06,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:18:06,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 22:18:06,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 22:18:06,931 INFO L87 Difference]: Start difference. First operand 1602 states and 2411 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 22:18:10,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:18:12,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:18:14,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:18:14,173 INFO L93 Difference]: Finished difference Result 3169 states and 4941 transitions. [2023-02-17 22:18:14,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 22:18:14,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2023-02-17 22:18:14,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:18:14,187 INFO L225 Difference]: With dead ends: 3169 [2023-02-17 22:18:14,188 INFO L226 Difference]: Without dead ends: 3166 [2023-02-17 22:18:14,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-17 22:18:14,190 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 934 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 264 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 2714 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-02-17 22:18:14,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 2714 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 1306 Invalid, 2 Unknown, 0 Unchecked, 7.1s Time] [2023-02-17 22:18:14,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3166 states. [2023-02-17 22:18:14,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3166 to 2550. [2023-02-17 22:18:14,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2550 states, 2173 states have (on average 1.4832029452369995) internal successors, (3223), 2225 states have internal predecessors, (3223), 266 states have call successors, (266), 99 states have call predecessors, (266), 110 states have return successors, (392), 236 states have call predecessors, (392), 251 states have call successors, (392) [2023-02-17 22:18:14,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2550 states to 2550 states and 3881 transitions. [2023-02-17 22:18:14,278 INFO L78 Accepts]: Start accepts. Automaton has 2550 states and 3881 transitions. Word has length 45 [2023-02-17 22:18:14,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:18:14,278 INFO L495 AbstractCegarLoop]: Abstraction has 2550 states and 3881 transitions. [2023-02-17 22:18:14,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 22:18:14,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states and 3881 transitions. [2023-02-17 22:18:14,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-17 22:18:14,280 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:18:14,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:18:14,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-17 22:18:14,280 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:18:14,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:18:14,281 INFO L85 PathProgramCache]: Analyzing trace with hash -285485209, now seen corresponding path program 1 times [2023-02-17 22:18:14,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:18:14,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287625455] [2023-02-17 22:18:14,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:18:14,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:18:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:14,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 22:18:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:14,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-17 22:18:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:14,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-02-17 22:18:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:14,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-17 22:18:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:14,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:18:14,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:18:14,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287625455] [2023-02-17 22:18:14,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287625455] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 22:18:14,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 22:18:14,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-17 22:18:14,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595593605] [2023-02-17 22:18:14,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 22:18:14,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 22:18:14,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:18:14,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 22:18:14,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-02-17 22:18:14,609 INFO L87 Difference]: Start difference. First operand 2550 states and 3881 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-17 22:18:18,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:18:20,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:18:20,489 INFO L93 Difference]: Finished difference Result 3798 states and 5980 transitions. [2023-02-17 22:18:20,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-17 22:18:20,490 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2023-02-17 22:18:20,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:18:20,504 INFO L225 Difference]: With dead ends: 3798 [2023-02-17 22:18:20,504 INFO L226 Difference]: Without dead ends: 3790 [2023-02-17 22:18:20,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2023-02-17 22:18:20,507 INFO L413 NwaCegarLoop]: 831 mSDtfsCounter, 2755 mSDsluCounter, 2144 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 963 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2816 SdHoareTripleChecker+Valid, 2975 SdHoareTripleChecker+Invalid, 3191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 963 IncrementalHoareTripleChecker+Valid, 2227 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-02-17 22:18:20,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2816 Valid, 2975 Invalid, 3191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [963 Valid, 2227 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2023-02-17 22:18:20,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3790 states. [2023-02-17 22:18:20,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3790 to 3139. [2023-02-17 22:18:20,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3139 states, 2670 states have (on average 1.4876404494382023) internal successors, (3972), 2741 states have internal predecessors, (3972), 332 states have call successors, (332), 116 states have call predecessors, (332), 136 states have return successors, (525), 292 states have call predecessors, (525), 317 states have call successors, (525) [2023-02-17 22:18:20,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 4829 transitions. [2023-02-17 22:18:20,656 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 4829 transitions. Word has length 47 [2023-02-17 22:18:20,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:18:20,657 INFO L495 AbstractCegarLoop]: Abstraction has 3139 states and 4829 transitions. [2023-02-17 22:18:20,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-17 22:18:20,658 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 4829 transitions. [2023-02-17 22:18:20,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-17 22:18:20,659 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:18:20,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:18:20,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-17 22:18:20,660 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:18:20,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:18:20,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1518670529, now seen corresponding path program 1 times [2023-02-17 22:18:20,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:18:20,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848781575] [2023-02-17 22:18:20,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:18:20,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:18:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:20,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 22:18:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:20,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-17 22:18:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:20,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-02-17 22:18:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:20,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:18:20,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:18:20,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848781575] [2023-02-17 22:18:20,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848781575] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 22:18:20,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 22:18:20,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 22:18:20,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707743530] [2023-02-17 22:18:20,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 22:18:20,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 22:18:20,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:18:20,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 22:18:20,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 22:18:20,851 INFO L87 Difference]: Start difference. First operand 3139 states and 4829 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 22:18:24,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:18:26,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:18:27,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:18:27,354 INFO L93 Difference]: Finished difference Result 9987 states and 15921 transitions. [2023-02-17 22:18:27,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 22:18:27,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 46 [2023-02-17 22:18:27,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:18:27,378 INFO L225 Difference]: With dead ends: 9987 [2023-02-17 22:18:27,379 INFO L226 Difference]: Without dead ends: 7066 [2023-02-17 22:18:27,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-17 22:18:27,391 INFO L413 NwaCegarLoop]: 847 mSDtfsCounter, 1339 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 297 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1408 SdHoareTripleChecker+Valid, 2251 SdHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-02-17 22:18:27,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1408 Valid, 2251 Invalid, 1259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 960 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2023-02-17 22:18:27,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7066 states. [2023-02-17 22:18:27,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7066 to 6230. [2023-02-17 22:18:27,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6230 states, 5324 states have (on average 1.5005634861006762) internal successors, (7989), 5487 states have internal predecessors, (7989), 647 states have call successors, (647), 214 states have call predecessors, (647), 258 states have return successors, (1139), 551 states have call predecessors, (1139), 635 states have call successors, (1139) [2023-02-17 22:18:27,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6230 states to 6230 states and 9775 transitions. [2023-02-17 22:18:27,676 INFO L78 Accepts]: Start accepts. Automaton has 6230 states and 9775 transitions. Word has length 46 [2023-02-17 22:18:27,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:18:27,676 INFO L495 AbstractCegarLoop]: Abstraction has 6230 states and 9775 transitions. [2023-02-17 22:18:27,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 22:18:27,676 INFO L276 IsEmpty]: Start isEmpty. Operand 6230 states and 9775 transitions. [2023-02-17 22:18:27,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-17 22:18:27,679 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:18:27,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:18:27,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-17 22:18:27,679 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:18:27,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:18:27,680 INFO L85 PathProgramCache]: Analyzing trace with hash 2006170664, now seen corresponding path program 1 times [2023-02-17 22:18:27,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:18:27,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742719436] [2023-02-17 22:18:27,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:18:27,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:18:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:28,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 22:18:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:28,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-17 22:18:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:28,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:18:28,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:18:28,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742719436] [2023-02-17 22:18:28,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742719436] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 22:18:28,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 22:18:28,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 22:18:28,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926492848] [2023-02-17 22:18:28,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 22:18:28,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 22:18:28,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:18:28,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 22:18:28,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 22:18:28,054 INFO L87 Difference]: Start difference. First operand 6230 states and 9775 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 22:18:31,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:18:33,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:18:35,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:18:35,283 INFO L93 Difference]: Finished difference Result 13181 states and 20868 transitions. [2023-02-17 22:18:35,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-17 22:18:35,284 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46 [2023-02-17 22:18:35,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:18:35,313 INFO L225 Difference]: With dead ends: 13181 [2023-02-17 22:18:35,313 INFO L226 Difference]: Without dead ends: 7261 [2023-02-17 22:18:35,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-02-17 22:18:35,330 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 2253 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 605 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2296 SdHoareTripleChecker+Valid, 2158 SdHoareTripleChecker+Invalid, 1856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 605 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-02-17 22:18:35,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2296 Valid, 2158 Invalid, 1856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [605 Valid, 1249 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2023-02-17 22:18:35,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7261 states. [2023-02-17 22:18:35,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7261 to 6221. [2023-02-17 22:18:35,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6221 states, 5315 states have (on average 1.4991533396048917) internal successors, (7968), 5478 states have internal predecessors, (7968), 647 states have call successors, (647), 214 states have call predecessors, (647), 258 states have return successors, (1139), 551 states have call predecessors, (1139), 635 states have call successors, (1139) [2023-02-17 22:18:35,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 9754 transitions. [2023-02-17 22:18:35,629 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 9754 transitions. Word has length 46 [2023-02-17 22:18:35,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:18:35,630 INFO L495 AbstractCegarLoop]: Abstraction has 6221 states and 9754 transitions. [2023-02-17 22:18:35,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 22:18:35,630 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 9754 transitions. [2023-02-17 22:18:35,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-02-17 22:18:35,631 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:18:35,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:18:35,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-17 22:18:35,632 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:18:35,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:18:35,632 INFO L85 PathProgramCache]: Analyzing trace with hash -703618871, now seen corresponding path program 1 times [2023-02-17 22:18:35,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:18:35,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494039415] [2023-02-17 22:18:35,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:18:35,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:18:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:35,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 22:18:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:35,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-17 22:18:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:35,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-02-17 22:18:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:35,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-17 22:18:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:35,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:18:35,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:18:35,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494039415] [2023-02-17 22:18:35,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494039415] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 22:18:35,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 22:18:35,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-17 22:18:35,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216307954] [2023-02-17 22:18:35,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 22:18:35,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 22:18:35,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:18:35,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 22:18:35,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-02-17 22:18:35,938 INFO L87 Difference]: Start difference. First operand 6221 states and 9754 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-17 22:18:40,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:18:42,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:18:42,594 INFO L93 Difference]: Finished difference Result 7131 states and 11388 transitions. [2023-02-17 22:18:42,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-17 22:18:42,596 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2023-02-17 22:18:42,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:18:42,643 INFO L225 Difference]: With dead ends: 7131 [2023-02-17 22:18:42,644 INFO L226 Difference]: Without dead ends: 7126 [2023-02-17 22:18:42,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2023-02-17 22:18:42,648 INFO L413 NwaCegarLoop]: 814 mSDtfsCounter, 2552 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 2221 mSolverCounterSat, 826 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2614 SdHoareTripleChecker+Valid, 2921 SdHoareTripleChecker+Invalid, 3048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 826 IncrementalHoareTripleChecker+Valid, 2221 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-02-17 22:18:42,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2614 Valid, 2921 Invalid, 3048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [826 Valid, 2221 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2023-02-17 22:18:42,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7126 states. [2023-02-17 22:18:42,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7126 to 6221. [2023-02-17 22:18:42,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6221 states, 5315 states have (on average 1.4989651928504233) internal successors, (7967), 5478 states have internal predecessors, (7967), 647 states have call successors, (647), 214 states have call predecessors, (647), 258 states have return successors, (1139), 551 states have call predecessors, (1139), 635 states have call successors, (1139) [2023-02-17 22:18:42,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 9753 transitions. [2023-02-17 22:18:42,940 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 9753 transitions. Word has length 48 [2023-02-17 22:18:42,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:18:42,941 INFO L495 AbstractCegarLoop]: Abstraction has 6221 states and 9753 transitions. [2023-02-17 22:18:42,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-17 22:18:42,941 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 9753 transitions. [2023-02-17 22:18:42,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-02-17 22:18:42,942 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:18:42,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:18:42,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-17 22:18:42,942 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:18:42,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:18:42,943 INFO L85 PathProgramCache]: Analyzing trace with hash -611856162, now seen corresponding path program 1 times [2023-02-17 22:18:42,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:18:42,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139864400] [2023-02-17 22:18:42,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:18:42,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:18:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:43,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 22:18:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:43,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-17 22:18:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:43,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-02-17 22:18:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:43,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-17 22:18:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:43,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:18:43,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:18:43,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139864400] [2023-02-17 22:18:43,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139864400] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 22:18:43,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 22:18:43,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-17 22:18:43,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946636900] [2023-02-17 22:18:43,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 22:18:43,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 22:18:43,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:18:43,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 22:18:43,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-17 22:18:43,372 INFO L87 Difference]: Start difference. First operand 6221 states and 9753 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-17 22:18:47,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:18:49,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:18:51,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:18:51,168 INFO L93 Difference]: Finished difference Result 13280 states and 21298 transitions. [2023-02-17 22:18:51,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-17 22:18:51,169 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2023-02-17 22:18:51,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:18:51,188 INFO L225 Difference]: With dead ends: 13280 [2023-02-17 22:18:51,188 INFO L226 Difference]: Without dead ends: 7024 [2023-02-17 22:18:51,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-02-17 22:18:51,213 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 690 mSDsluCounter, 2282 mSDsCounter, 0 mSdLazyCounter, 1853 mSolverCounterSat, 228 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 2846 SdHoareTripleChecker+Invalid, 2083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1853 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-02-17 22:18:51,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 2846 Invalid, 2083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1853 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2023-02-17 22:18:51,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7024 states. [2023-02-17 22:18:51,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7024 to 6248. [2023-02-17 22:18:51,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6248 states, 5340 states have (on average 1.496629213483146) internal successors, (7992), 5505 states have internal predecessors, (7992), 647 states have call successors, (647), 214 states have call predecessors, (647), 260 states have return successors, (1144), 551 states have call predecessors, (1144), 635 states have call successors, (1144) [2023-02-17 22:18:51,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6248 states to 6248 states and 9783 transitions. [2023-02-17 22:18:51,521 INFO L78 Accepts]: Start accepts. Automaton has 6248 states and 9783 transitions. Word has length 49 [2023-02-17 22:18:51,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:18:51,521 INFO L495 AbstractCegarLoop]: Abstraction has 6248 states and 9783 transitions. [2023-02-17 22:18:51,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-17 22:18:51,521 INFO L276 IsEmpty]: Start isEmpty. Operand 6248 states and 9783 transitions. [2023-02-17 22:18:51,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-17 22:18:51,522 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:18:51,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:18:51,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-17 22:18:51,523 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:18:51,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:18:51,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1052684790, now seen corresponding path program 1 times [2023-02-17 22:18:51,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:18:51,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315330507] [2023-02-17 22:18:51,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:18:51,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:18:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:51,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 22:18:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:51,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-17 22:18:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:51,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-02-17 22:18:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:51,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-17 22:18:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:51,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:18:51,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:18:51,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315330507] [2023-02-17 22:18:51,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315330507] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 22:18:51,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830670726] [2023-02-17 22:18:51,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:18:51,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 22:18:51,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 22:18:51,972 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) [2023-02-17 22:18:52,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 22:18:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:18:52,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-17 22:18:52,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:18:52,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:18:52,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:18:52,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:18:52,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830670726] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:18:52,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 22:18:52,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-02-17 22:18:52,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508949766] [2023-02-17 22:18:52,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 22:18:52,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-17 22:18:52,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:18:52,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-17 22:18:52,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-02-17 22:18:52,726 INFO L87 Difference]: Start difference. First operand 6248 states and 9783 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 10 states have internal predecessors, (60), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-17 22:18:58,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:18:59,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:18:59,227 INFO L93 Difference]: Finished difference Result 13331 states and 21354 transitions. [2023-02-17 22:18:59,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-17 22:18:59,228 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 10 states have internal predecessors, (60), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 50 [2023-02-17 22:18:59,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:18:59,255 INFO L225 Difference]: With dead ends: 13331 [2023-02-17 22:18:59,255 INFO L226 Difference]: Without dead ends: 7047 [2023-02-17 22:18:59,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 97 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2023-02-17 22:18:59,274 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 1088 mSDsluCounter, 3068 mSDsCounter, 0 mSdLazyCounter, 2172 mSolverCounterSat, 425 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 3631 SdHoareTripleChecker+Invalid, 2598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 2172 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-02-17 22:18:59,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 3631 Invalid, 2598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 2172 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2023-02-17 22:18:59,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7047 states. [2023-02-17 22:18:59,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7047 to 6271. [2023-02-17 22:18:59,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6271 states, 5363 states have (on average 1.4944993473801977) internal successors, (8015), 5528 states have internal predecessors, (8015), 647 states have call successors, (647), 214 states have call predecessors, (647), 260 states have return successors, (1144), 551 states have call predecessors, (1144), 635 states have call successors, (1144) [2023-02-17 22:18:59,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6271 states to 6271 states and 9806 transitions. [2023-02-17 22:18:59,608 INFO L78 Accepts]: Start accepts. Automaton has 6271 states and 9806 transitions. Word has length 50 [2023-02-17 22:18:59,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:18:59,608 INFO L495 AbstractCegarLoop]: Abstraction has 6271 states and 9806 transitions. [2023-02-17 22:18:59,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 10 states have internal predecessors, (60), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-17 22:18:59,609 INFO L276 IsEmpty]: Start isEmpty. Operand 6271 states and 9806 transitions. [2023-02-17 22:18:59,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-02-17 22:18:59,610 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:18:59,610 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:18:59,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 22:18:59,819 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,SelfDestructingSolverStorable11 [2023-02-17 22:18:59,820 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:18:59,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:18:59,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1656968926, now seen corresponding path program 2 times [2023-02-17 22:18:59,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:18:59,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838446168] [2023-02-17 22:18:59,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:18:59,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:18:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:19:00,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 22:19:00,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:19:00,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-17 22:19:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:19:00,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-02-17 22:19:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:19:00,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-17 22:19:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:19:00,491 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:19:00,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:19:00,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838446168] [2023-02-17 22:19:00,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838446168] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 22:19:00,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323853968] [2023-02-17 22:19:00,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 22:19:00,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 22:19:00,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 22:19:00,493 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) [2023-02-17 22:19:00,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 22:19:03,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 22:19:03,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:19:03,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 2430 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-17 22:19:03,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:19:03,212 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:19:03,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:19:03,354 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:19:03,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323853968] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:19:03,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 22:19:03,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 23 [2023-02-17 22:19:03,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821030239] [2023-02-17 22:19:03,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 22:19:03,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-17 22:19:03,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:19:03,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-17 22:19:03,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2023-02-17 22:19:03,356 INFO L87 Difference]: Start difference. First operand 6271 states and 9806 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 19 states have internal predecessors, (69), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-17 22:19:09,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:19:10,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:19:10,664 INFO L93 Difference]: Finished difference Result 13497 states and 21603 transitions. [2023-02-17 22:19:10,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-02-17 22:19:10,665 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 19 states have internal predecessors, (69), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 53 [2023-02-17 22:19:10,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:19:10,684 INFO L225 Difference]: With dead ends: 13497 [2023-02-17 22:19:10,684 INFO L226 Difference]: Without dead ends: 7113 [2023-02-17 22:19:10,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 98 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=512, Invalid=1650, Unknown=0, NotChecked=0, Total=2162 [2023-02-17 22:19:10,705 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 1114 mSDsluCounter, 3575 mSDsCounter, 0 mSdLazyCounter, 2599 mSolverCounterSat, 435 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 4137 SdHoareTripleChecker+Invalid, 3035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 2599 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-02-17 22:19:10,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 4137 Invalid, 3035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 2599 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2023-02-17 22:19:10,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7113 states. [2023-02-17 22:19:10,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7113 to 6337. [2023-02-17 22:19:10,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6337 states, 5429 states have (on average 1.488487750967029) internal successors, (8081), 5594 states have internal predecessors, (8081), 647 states have call successors, (647), 214 states have call predecessors, (647), 260 states have return successors, (1144), 551 states have call predecessors, (1144), 635 states have call successors, (1144) [2023-02-17 22:19:11,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6337 states to 6337 states and 9872 transitions. [2023-02-17 22:19:11,008 INFO L78 Accepts]: Start accepts. Automaton has 6337 states and 9872 transitions. Word has length 53 [2023-02-17 22:19:11,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:19:11,008 INFO L495 AbstractCegarLoop]: Abstraction has 6337 states and 9872 transitions. [2023-02-17 22:19:11,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 19 states have internal predecessors, (69), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-17 22:19:11,009 INFO L276 IsEmpty]: Start isEmpty. Operand 6337 states and 9872 transitions. [2023-02-17 22:19:11,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-02-17 22:19:11,010 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:19:11,010 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:19:11,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-17 22:19:11,221 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,SelfDestructingSolverStorable12 [2023-02-17 22:19:11,221 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:19:11,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:19:11,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1523908574, now seen corresponding path program 3 times [2023-02-17 22:19:11,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:19:11,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541543252] [2023-02-17 22:19:11,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:19:11,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:19:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:19:11,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 22:19:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:19:12,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-17 22:19:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:19:12,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-02-17 22:19:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:19:12,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-17 22:19:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:19:12,191 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:19:12,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:19:12,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541543252] [2023-02-17 22:19:12,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541543252] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 22:19:12,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167056105] [2023-02-17 22:19:12,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 22:19:12,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 22:19:12,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 22:19:12,193 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) [2023-02-17 22:19:12,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 22:19:34,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-02-17 22:19:34,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:19:34,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 2520 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-17 22:19:34,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:19:34,866 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:19:34,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:19:35,358 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:19:35,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167056105] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:19:35,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 22:19:35,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 14] total 42 [2023-02-17 22:19:35,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082069484] [2023-02-17 22:19:35,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 22:19:35,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-02-17 22:19:35,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:19:35,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-02-17 22:19:35,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1355, Unknown=0, NotChecked=0, Total=1722 [2023-02-17 22:19:35,360 INFO L87 Difference]: Start difference. First operand 6337 states and 9872 transitions. Second operand has 42 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 38 states have internal predecessors, (88), 3 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-02-17 22:19:45,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:19:47,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:19:47,331 INFO L93 Difference]: Finished difference Result 13809 states and 22041 transitions. [2023-02-17 22:19:47,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-02-17 22:19:47,332 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 38 states have internal predecessors, (88), 3 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 59 [2023-02-17 22:19:47,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:19:47,353 INFO L225 Difference]: With dead ends: 13809 [2023-02-17 22:19:47,353 INFO L226 Difference]: Without dead ends: 7245 [2023-02-17 22:19:47,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 96 SyntacticMatches, 4 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1095 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1531, Invalid=5779, Unknown=0, NotChecked=0, Total=7310 [2023-02-17 22:19:47,373 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 986 mSDsluCounter, 9179 mSDsCounter, 0 mSdLazyCounter, 6513 mSolverCounterSat, 359 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 9742 SdHoareTripleChecker+Invalid, 6873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 6513 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2023-02-17 22:19:47,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 9742 Invalid, 6873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 6513 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2023-02-17 22:19:47,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7245 states. [2023-02-17 22:19:47,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7245 to 6469. [2023-02-17 22:19:47,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6469 states, 5561 states have (on average 1.4768926452076965) internal successors, (8213), 5726 states have internal predecessors, (8213), 647 states have call successors, (647), 214 states have call predecessors, (647), 260 states have return successors, (1144), 551 states have call predecessors, (1144), 635 states have call successors, (1144) [2023-02-17 22:19:47,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6469 states to 6469 states and 10004 transitions. [2023-02-17 22:19:47,803 INFO L78 Accepts]: Start accepts. Automaton has 6469 states and 10004 transitions. Word has length 59 [2023-02-17 22:19:47,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:19:47,803 INFO L495 AbstractCegarLoop]: Abstraction has 6469 states and 10004 transitions. [2023-02-17 22:19:47,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 38 states have internal predecessors, (88), 3 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-02-17 22:19:47,804 INFO L276 IsEmpty]: Start isEmpty. Operand 6469 states and 10004 transitions. [2023-02-17 22:19:47,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-02-17 22:19:47,809 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:19:47,809 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:19:47,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 22:19:48,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 22:19:48,025 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:19:48,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:19:48,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1149216747, now seen corresponding path program 1 times [2023-02-17 22:19:48,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:19:48,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399664135] [2023-02-17 22:19:48,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:19:48,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:19:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:19:48,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 22:19:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:19:49,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-17 22:19:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:19:49,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-02-17 22:19:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:19:49,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-17 22:19:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:19:49,796 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:19:49,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:19:49,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399664135] [2023-02-17 22:19:49,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399664135] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 22:19:49,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211078692] [2023-02-17 22:19:49,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:19:49,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 22:19:49,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 22:19:49,798 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 22:19:49,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 22:19:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:19:51,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 2701 conjuncts, 50 conjunts are in the unsatisfiable core [2023-02-17 22:19:51,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:19:52,775 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:19:52,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:19:56,132 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:19:56,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211078692] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:19:56,133 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 22:19:56,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 26, 26] total 77 [2023-02-17 22:19:56,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988169578] [2023-02-17 22:19:56,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 22:19:56,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-02-17 22:19:56,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:19:56,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-02-17 22:19:56,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1306, Invalid=4546, Unknown=0, NotChecked=0, Total=5852 [2023-02-17 22:19:56,135 INFO L87 Difference]: Start difference. First operand 6469 states and 10004 transitions. Second operand has 77 states, 77 states have (on average 1.6103896103896105) internal successors, (124), 73 states have internal predecessors, (124), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-17 22:23:44,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:23:48,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:23:50,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:24:07,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:24:10,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:24:10,976 INFO L93 Difference]: Finished difference Result 14433 states and 22917 transitions. [2023-02-17 22:24:10,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-02-17 22:24:10,977 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 1.6103896103896105) internal successors, (124), 73 states have internal predecessors, (124), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 72 [2023-02-17 22:24:10,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:24:10,998 INFO L225 Difference]: With dead ends: 14433 [2023-02-17 22:24:10,999 INFO L226 Difference]: Without dead ends: 7509 [2023-02-17 22:24:11,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 100 SyntacticMatches, 3 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4796 ImplicationChecksByTransitivity, 230.5s TimeCoverageRelationStatistics Valid=5427, Invalid=21298, Unknown=7, NotChecked=0, Total=26732 [2023-02-17 22:24:11,024 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 916 mSDsluCounter, 12980 mSDsCounter, 0 mSdLazyCounter, 11148 mSolverCounterSat, 297 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 13542 SdHoareTripleChecker+Invalid, 11447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 11148 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.4s IncrementalHoareTripleChecker+Time [2023-02-17 22:24:11,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 13542 Invalid, 11447 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [297 Valid, 11148 Invalid, 2 Unknown, 0 Unchecked, 28.4s Time] [2023-02-17 22:24:11,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7509 states. [2023-02-17 22:24:11,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7509 to 6733. [2023-02-17 22:24:11,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6733 states, 5825 states have (on average 1.4552789699570816) internal successors, (8477), 5990 states have internal predecessors, (8477), 647 states have call successors, (647), 214 states have call predecessors, (647), 260 states have return successors, (1144), 551 states have call predecessors, (1144), 635 states have call successors, (1144) [2023-02-17 22:24:11,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6733 states to 6733 states and 10268 transitions. [2023-02-17 22:24:11,472 INFO L78 Accepts]: Start accepts. Automaton has 6733 states and 10268 transitions. Word has length 72 [2023-02-17 22:24:11,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:24:11,472 INFO L495 AbstractCegarLoop]: Abstraction has 6733 states and 10268 transitions. [2023-02-17 22:24:11,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 1.6103896103896105) internal successors, (124), 73 states have internal predecessors, (124), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-17 22:24:11,473 INFO L276 IsEmpty]: Start isEmpty. Operand 6733 states and 10268 transitions. [2023-02-17 22:24:11,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-02-17 22:24:11,474 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:24:11,474 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:24:11,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-17 22:24:11,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-02-17 22:24:11,693 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:24:11,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:24:11,693 INFO L85 PathProgramCache]: Analyzing trace with hash -871025186, now seen corresponding path program 4 times [2023-02-17 22:24:11,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:24:11,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394226194] [2023-02-17 22:24:11,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:24:11,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:24:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:24:13,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 22:24:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:24:16,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-02-17 22:24:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:24:16,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-02-17 22:24:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:24:16,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-17 22:24:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:24:16,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:24:16,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:24:16,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394226194] [2023-02-17 22:24:16,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394226194] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 22:24:16,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522429619] [2023-02-17 22:24:16,238 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 22:24:16,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 22:24:16,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 22:24:16,240 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 22:24:16,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 22:24:40,904 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 22:24:40,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:24:40,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 3060 conjuncts, 97 conjunts are in the unsatisfiable core [2023-02-17 22:24:40,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:24:44,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:24:44,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:24:51,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:24:51,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522429619] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:24:51,709 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 22:24:51,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 50, 50] total 149 [2023-02-17 22:24:51,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981252849] [2023-02-17 22:24:51,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 22:24:51,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2023-02-17 22:24:51,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:24:51,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2023-02-17 22:24:51,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4901, Invalid=17151, Unknown=0, NotChecked=0, Total=22052 [2023-02-17 22:24:51,718 INFO L87 Difference]: Start difference. First operand 6733 states and 10268 transitions. Second operand has 149 states, 149 states have (on average 1.308724832214765) internal successors, (195), 145 states have internal predecessors, (195), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-17 22:25:04,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:25:09,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:25:16,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:25:22,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:25:24,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:25:34,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:25:47,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:25:49,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:25:59,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:26:00,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:26:10,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:26:44,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:27:06,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:30:08,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:30:22,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 22:30:33,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:30:33,015 INFO L93 Difference]: Finished difference Result 15681 states and 24669 transitions. [2023-02-17 22:30:33,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2023-02-17 22:30:33,016 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 149 states have (on average 1.308724832214765) internal successors, (195), 145 states have internal predecessors, (195), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 95 [2023-02-17 22:30:33,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:30:33,054 INFO L225 Difference]: With dead ends: 15681 [2023-02-17 22:30:33,067 INFO L226 Difference]: Without dead ends: 8037 [2023-02-17 22:30:33,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 97 SyntacticMatches, 4 SemanticMatches, 317 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15824 ImplicationChecksByTransitivity, 286.1s TimeCoverageRelationStatistics Valid=19889, Invalid=81540, Unknown=13, NotChecked=0, Total=101442 [2023-02-17 22:30:33,090 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 1489 mSDsluCounter, 25509 mSDsCounter, 0 mSdLazyCounter, 26198 mSolverCounterSat, 580 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 26072 SdHoareTripleChecker+Invalid, 26786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 580 IncrementalHoareTripleChecker+Valid, 26198 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.9s IncrementalHoareTripleChecker+Time [2023-02-17 22:30:33,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 26072 Invalid, 26786 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [580 Valid, 26198 Invalid, 8 Unknown, 0 Unchecked, 65.9s Time] [2023-02-17 22:30:33,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8037 states. [2023-02-17 22:30:33,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8037 to 7261. [2023-02-17 22:30:33,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7261 states, 6353 states have (on average 1.4174405792538958) internal successors, (9005), 6518 states have internal predecessors, (9005), 647 states have call successors, (647), 214 states have call predecessors, (647), 260 states have return successors, (1144), 551 states have call predecessors, (1144), 635 states have call successors, (1144) [2023-02-17 22:30:33,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7261 states to 7261 states and 10796 transitions. [2023-02-17 22:30:33,644 INFO L78 Accepts]: Start accepts. Automaton has 7261 states and 10796 transitions. Word has length 95 [2023-02-17 22:30:33,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:30:33,644 INFO L495 AbstractCegarLoop]: Abstraction has 7261 states and 10796 transitions. [2023-02-17 22:30:33,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 1.308724832214765) internal successors, (195), 145 states have internal predecessors, (195), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-17 22:30:33,645 INFO L276 IsEmpty]: Start isEmpty. Operand 7261 states and 10796 transitions. [2023-02-17 22:30:33,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-02-17 22:30:33,646 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:30:33,646 INFO L195 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:30:33,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-17 22:30:33,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-02-17 22:30:33,861 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:30:33,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:30:33,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1367047646, now seen corresponding path program 5 times [2023-02-17 22:30:33,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:30:33,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285575133] [2023-02-17 22:30:33,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:30:33,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:30:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:30:38,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 22:30:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:30:47,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-02-17 22:30:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:30:47,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-02-17 22:30:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:30:47,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-17 22:30:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:30:47,371 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:30:47,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:30:47,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285575133] [2023-02-17 22:30:47,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285575133] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 22:30:47,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311608144] [2023-02-17 22:30:47,372 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 22:30:47,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 22:30:47,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 22:30:47,373 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 22:30:47,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process