./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 3dbbec33 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-?-3dbbec3 [2023-02-14 10:52:32,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 10:52:32,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 10:52:32,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 10:52:32,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 10:52:32,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 10:52:32,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 10:52:32,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 10:52:32,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 10:52:32,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 10:52:32,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 10:52:32,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 10:52:32,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 10:52:32,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 10:52:32,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 10:52:32,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 10:52:32,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 10:52:32,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 10:52:32,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 10:52:32,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 10:52:32,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 10:52:32,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 10:52:32,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 10:52:32,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 10:52:32,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 10:52:32,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 10:52:32,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 10:52:32,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 10:52:32,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 10:52:32,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 10:52:32,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 10:52:32,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 10:52:32,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 10:52:32,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 10:52:32,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 10:52:32,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 10:52:32,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 10:52:32,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 10:52:32,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 10:52:32,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 10:52:32,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 10:52:32,993 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 10:52:33,020 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 10:52:33,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 10:52:33,021 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 10:52:33,021 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 10:52:33,022 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 10:52:33,022 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 10:52:33,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 10:52:33,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 10:52:33,023 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 10:52:33,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 10:52:33,024 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 10:52:33,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 10:52:33,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 10:52:33,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 10:52:33,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 10:52:33,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 10:52:33,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 10:52:33,025 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 10:52:33,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 10:52:33,025 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 10:52:33,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 10:52:33,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 10:52:33,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 10:52:33,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 10:52:33,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 10:52:33,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 10:52:33,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 10:52:33,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 10:52:33,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 10:52:33,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 10:52:33,027 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 10:52:33,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 10:52:33,027 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 10:52:33,027 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 10:52:33,028 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 10:52:33,028 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 986945cc1d8674c803a19893f7d2aec71de46e5693e78eba56c7bdad24c6e341 [2023-02-14 10:52:33,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 10:52:33,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 10:52:33,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 10:52:33,224 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 10:52:33,224 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 10:52:33,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c [2023-02-14 10:52:34,191 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 10:52:34,509 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 10:52:34,509 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c [2023-02-14 10:52:34,541 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf27b9a11/2b4b588ec64d407b8877ecca02411ecd/FLAG973a3255b [2023-02-14 10:52:34,554 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf27b9a11/2b4b588ec64d407b8877ecca02411ecd [2023-02-14 10:52:34,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 10:52:34,557 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 10:52:34,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 10:52:34,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 10:52:34,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 10:52:34,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 10:52:34" (1/1) ... [2023-02-14 10:52:34,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fac5e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:52:34, skipping insertion in model container [2023-02-14 10:52:34,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 10:52:34" (1/1) ... [2023-02-14 10:52:34,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 10:52:34,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 10:52:35,068 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] [2023-02-14 10:52:35,091 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-14 10:52:35,097 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-14 10:52:35,352 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 10:52:35,384 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 10:52:35,424 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] [2023-02-14 10:52:35,432 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-14 10:52:35,433 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-14 10:52:35,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 10:52:35,654 INFO L208 MainTranslator]: Completed translation [2023-02-14 10:52:35,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:52:35 WrapperNode [2023-02-14 10:52:35,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 10:52:35,655 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 10:52:35,655 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 10:52:35,655 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 10:52:35,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:52:35" (1/1) ... [2023-02-14 10:52:35,724 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:52:35" (1/1) ... [2023-02-14 10:52:35,811 INFO L138 Inliner]: procedures = 126, calls = 2882, calls flagged for inlining = 36, calls inlined = 25, statements flattened = 3051 [2023-02-14 10:52:35,812 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 10:52:35,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 10:52:35,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 10:52:35,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 10:52:35,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:52:35" (1/1) ... [2023-02-14 10:52:35,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:52:35" (1/1) ... [2023-02-14 10:52:35,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:52:35" (1/1) ... [2023-02-14 10:52:35,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:52:35" (1/1) ... [2023-02-14 10:52:35,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:52:35" (1/1) ... [2023-02-14 10:52:35,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:52:35" (1/1) ... [2023-02-14 10:52:35,958 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:52:35" (1/1) ... [2023-02-14 10:52:35,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:52:35" (1/1) ... [2023-02-14 10:52:35,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 10:52:35,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 10:52:35,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 10:52:35,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 10:52:35,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:52:35" (1/1) ... [2023-02-14 10:52:35,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 10:52:36,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 10:52:36,011 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) [2023-02-14 10:52:36,024 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 [2023-02-14 10:52:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2023-02-14 10:52:36,041 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2023-02-14 10:52:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-02-14 10:52:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-02-14 10:52:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-02-14 10:52:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-14 10:52:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2023-02-14 10:52:36,042 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2023-02-14 10:52:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-02-14 10:52:36,042 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-02-14 10:52:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2023-02-14 10:52:36,042 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2023-02-14 10:52:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2023-02-14 10:52:36,042 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2023-02-14 10:52:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-14 10:52:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2023-02-14 10:52:36,043 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2023-02-14 10:52:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2023-02-14 10:52:36,043 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2023-02-14 10:52:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2023-02-14 10:52:36,043 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2023-02-14 10:52:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-02-14 10:52:36,043 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-02-14 10:52:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2023-02-14 10:52:36,044 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2023-02-14 10:52:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2023-02-14 10:52:36,044 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2023-02-14 10:52:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2023-02-14 10:52:36,045 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2023-02-14 10:52:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-14 10:52:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 10:52:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2023-02-14 10:52:36,045 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2023-02-14 10:52:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2023-02-14 10:52:36,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2023-02-14 10:52:36,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-14 10:52:36,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-14 10:52:36,046 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2023-02-14 10:52:36,046 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2023-02-14 10:52:36,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-14 10:52:36,046 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2023-02-14 10:52:36,046 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2023-02-14 10:52:36,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-14 10:52:36,047 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2023-02-14 10:52:36,047 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2023-02-14 10:52:36,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 10:52:36,047 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2023-02-14 10:52:36,047 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2023-02-14 10:52:36,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-02-14 10:52:36,048 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2023-02-14 10:52:36,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2023-02-14 10:52:36,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 10:52:36,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 10:52:36,426 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 10:52:36,427 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 10:52:36,467 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 10:52:36,492 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-02-14 10:52:36,492 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-02-14 10:52:36,498 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 10:52:36,645 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2023-02-14 10:52:36,646 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2023-02-14 10:52:36,672 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 10:52:36,681 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2023-02-14 10:52:36,682 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2023-02-14 10:52:36,760 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 10:52:36,780 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2023-02-14 10:52:36,780 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2023-02-14 10:52:36,781 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 10:52:36,782 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 10:52:36,783 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 10:52:36,863 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2023-02-14 10:52:36,864 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2023-02-14 10:52:36,864 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2023-02-14 10:52:36,864 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2023-02-14 10:52:36,864 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2023-02-14 10:52:36,865 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2023-02-14 10:52:36,868 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 10:52:36,874 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 10:52:36,875 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 10:52:37,239 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2023-02-14 10:52:37,240 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2023-02-14 10:52:37,240 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2023-02-14 10:52:37,240 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2023-02-14 10:52:37,240 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##124: assume !false; [2023-02-14 10:52:37,240 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume false; [2023-02-14 10:52:37,257 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 10:52:37,278 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-02-14 10:52:37,278 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-02-14 10:52:37,282 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 10:52:37,283 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 10:52:37,284 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 10:52:37,284 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 10:52:37,285 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 10:52:37,287 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 10:52:37,287 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 10:52:37,288 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 10:52:40,319 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !false; [2023-02-14 10:52:40,320 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume false; [2023-02-14 10:52:40,320 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##76: assume false; [2023-02-14 10:52:40,320 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##177: assume !false; [2023-02-14 10:52:40,320 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##176: assume false; [2023-02-14 10:52:40,320 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume !false; [2023-02-14 10:52:40,320 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2023-02-14 10:52:40,320 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2023-02-14 10:52:40,320 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2023-02-14 10:52:40,320 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2023-02-14 10:52:40,320 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2023-02-14 10:52:40,320 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2023-02-14 10:52:40,320 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##210: assume false; [2023-02-14 10:52:40,320 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##211: assume !false; [2023-02-14 10:52:40,320 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##108: assume !false; [2023-02-14 10:52:40,320 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume false; [2023-02-14 10:52:40,330 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 10:52:40,337 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 10:52:40,337 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-14 10:52:40,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:52:40 BoogieIcfgContainer [2023-02-14 10:52:40,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 10:52:40,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 10:52:40,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 10:52:40,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 10:52:40,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 10:52:34" (1/3) ... [2023-02-14 10:52:40,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee66ac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 10:52:40, skipping insertion in model container [2023-02-14 10:52:40,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:52:35" (2/3) ... [2023-02-14 10:52:40,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee66ac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 10:52:40, skipping insertion in model container [2023-02-14 10:52:40,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:52:40" (3/3) ... [2023-02-14 10:52:40,345 INFO L112 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-1.c [2023-02-14 10:52:40,357 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 10:52:40,357 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-14 10:52:40,405 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 10:52:40,411 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;@8f3a07d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 10:52:40,411 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-14 10:52:40,418 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) [2023-02-14 10:52:40,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-14 10:52:40,426 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:52:40,427 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] [2023-02-14 10:52:40,427 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:52:40,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:52:40,431 INFO L85 PathProgramCache]: Analyzing trace with hash -197079634, now seen corresponding path program 1 times [2023-02-14 10:52:40,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:52:40,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448338164] [2023-02-14 10:52:40,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:52:40,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:52:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:40,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 10:52:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:41,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-14 10:52:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:41,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 10:52:41,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:52:41,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448338164] [2023-02-14 10:52:41,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448338164] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 10:52:41,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 10:52:41,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 10:52:41,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986355210] [2023-02-14 10:52:41,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 10:52:41,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 10:52:41,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:52:41,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 10:52:41,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 10:52:41,076 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) [2023-02-14 10:52:44,850 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 [] [2023-02-14 10:52:45,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:52:45,027 INFO L93 Difference]: Finished difference Result 1130 states and 1773 transitions. [2023-02-14 10:52:45,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 10:52:45,038 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 [2023-02-14 10:52:45,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:52:45,048 INFO L225 Difference]: With dead ends: 1130 [2023-02-14 10:52:45,056 INFO L226 Difference]: Without dead ends: 639 [2023-02-14 10:52:45,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-14 10:52:45,067 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 412 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 207 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s 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, 3.8s IncrementalHoareTripleChecker+Time [2023-02-14 10:52:45,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 2006 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 856 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2023-02-14 10:52:45,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2023-02-14 10:52:45,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 563. [2023-02-14 10:52:45,152 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) [2023-02-14 10:52:45,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 818 transitions. [2023-02-14 10:52:45,161 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 818 transitions. Word has length 26 [2023-02-14 10:52:45,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:52:45,161 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 818 transitions. [2023-02-14 10:52:45,162 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) [2023-02-14 10:52:45,162 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 818 transitions. [2023-02-14 10:52:45,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-14 10:52:45,163 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:52:45,163 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] [2023-02-14 10:52:45,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 10:52:45,165 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:52:45,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:52:45,165 INFO L85 PathProgramCache]: Analyzing trace with hash -169212496, now seen corresponding path program 1 times [2023-02-14 10:52:45,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:52:45,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766994069] [2023-02-14 10:52:45,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:52:45,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:52:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:45,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 10:52:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:45,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-14 10:52:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:45,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 10:52:45,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:52:45,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766994069] [2023-02-14 10:52:45,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766994069] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 10:52:45,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 10:52:45,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-14 10:52:45,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729841667] [2023-02-14 10:52:45,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 10:52:45,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-14 10:52:45,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:52:45,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-14 10:52:45,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-14 10:52:45,449 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) [2023-02-14 10:52:49,124 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 [] [2023-02-14 10:52:49,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:52:49,276 INFO L93 Difference]: Finished difference Result 1183 states and 1738 transitions. [2023-02-14 10:52:49,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-14 10:52:49,277 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 [2023-02-14 10:52:49,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:52:49,280 INFO L225 Difference]: With dead ends: 1183 [2023-02-14 10:52:49,281 INFO L226 Difference]: Without dead ends: 639 [2023-02-14 10:52:49,282 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 [2023-02-14 10:52:49,283 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 374 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 203 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s 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, 3.7s IncrementalHoareTripleChecker+Time [2023-02-14 10:52:49,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 2604 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1047 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2023-02-14 10:52:49,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2023-02-14 10:52:49,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 563. [2023-02-14 10:52:49,298 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) [2023-02-14 10:52:49,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 817 transitions. [2023-02-14 10:52:49,301 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 817 transitions. Word has length 29 [2023-02-14 10:52:49,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:52:49,301 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 817 transitions. [2023-02-14 10:52:49,302 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) [2023-02-14 10:52:49,302 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 817 transitions. [2023-02-14 10:52:49,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-14 10:52:49,302 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:52:49,302 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] [2023-02-14 10:52:49,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-14 10:52:49,303 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:52:49,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:52:49,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1081663514, now seen corresponding path program 1 times [2023-02-14 10:52:49,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:52:49,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877352202] [2023-02-14 10:52:49,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:52:49,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:52:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:49,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 10:52:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:49,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-14 10:52:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:49,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 10:52:49,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:52:49,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877352202] [2023-02-14 10:52:49,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877352202] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 10:52:49,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 10:52:49,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 10:52:49,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791468919] [2023-02-14 10:52:49,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 10:52:49,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 10:52:49,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:52:49,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 10:52:49,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 10:52:49,630 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) [2023-02-14 10:52:53,112 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 [] [2023-02-14 10:52:54,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:52:54,019 INFO L93 Difference]: Finished difference Result 1494 states and 2232 transitions. [2023-02-14 10:52:54,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 10:52:54,020 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 [2023-02-14 10:52:54,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:52:54,028 INFO L225 Difference]: With dead ends: 1494 [2023-02-14 10:52:54,028 INFO L226 Difference]: Without dead ends: 1093 [2023-02-14 10:52:54,030 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 [2023-02-14 10:52:54,032 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 1344 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 361 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s 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, 4.3s IncrementalHoareTripleChecker+Time [2023-02-14 10:52:54,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 2251 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 1114 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2023-02-14 10:52:54,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2023-02-14 10:52:54,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 979. [2023-02-14 10:52:54,086 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) [2023-02-14 10:52:54,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1446 transitions. [2023-02-14 10:52:54,091 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1446 transitions. Word has length 33 [2023-02-14 10:52:54,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:52:54,092 INFO L495 AbstractCegarLoop]: Abstraction has 979 states and 1446 transitions. [2023-02-14 10:52:54,093 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) [2023-02-14 10:52:54,093 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1446 transitions. [2023-02-14 10:52:54,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-14 10:52:54,096 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:52:54,096 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] [2023-02-14 10:52:54,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-14 10:52:54,097 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:52:54,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:52:54,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1331144769, now seen corresponding path program 1 times [2023-02-14 10:52:54,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:52:54,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821312888] [2023-02-14 10:52:54,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:52:54,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:52:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:54,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 10:52:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:54,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-14 10:52:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:54,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-02-14 10:52:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:54,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 10:52:54,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:52:54,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821312888] [2023-02-14 10:52:54,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821312888] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 10:52:54,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 10:52:54,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 10:52:54,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395376645] [2023-02-14 10:52:54,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 10:52:54,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 10:52:54,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:52:54,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 10:52:54,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 10:52:54,465 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) [2023-02-14 10:52:57,834 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 [] [2023-02-14 10:52:58,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:52:58,626 INFO L93 Difference]: Finished difference Result 1814 states and 2766 transitions. [2023-02-14 10:52:58,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 10:52:58,627 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 [2023-02-14 10:52:58,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:52:58,634 INFO L225 Difference]: With dead ends: 1814 [2023-02-14 10:52:58,634 INFO L226 Difference]: Without dead ends: 1796 [2023-02-14 10:52:58,635 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 [2023-02-14 10:52:58,636 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 1471 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 344 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s 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 [2023-02-14 10:52:58,637 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] [2023-02-14 10:52:58,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2023-02-14 10:52:58,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1569. [2023-02-14 10:52:58,690 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) [2023-02-14 10:52:58,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2364 transitions. [2023-02-14 10:52:58,698 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2364 transitions. Word has length 45 [2023-02-14 10:52:58,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:52:58,698 INFO L495 AbstractCegarLoop]: Abstraction has 1569 states and 2364 transitions. [2023-02-14 10:52:58,698 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) [2023-02-14 10:52:58,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2364 transitions. [2023-02-14 10:52:58,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-14 10:52:58,704 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:52:58,704 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] [2023-02-14 10:52:58,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-14 10:52:58,704 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:52:58,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:52:58,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1069708837, now seen corresponding path program 1 times [2023-02-14 10:52:58,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:52:58,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113379150] [2023-02-14 10:52:58,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:52:58,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:52:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:58,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 10:52:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:58,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-14 10:52:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:58,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 10:52:58,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:52:58,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113379150] [2023-02-14 10:52:58,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113379150] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 10:52:58,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 10:52:58,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 10:52:58,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649596743] [2023-02-14 10:52:58,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 10:52:58,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 10:52:58,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:52:58,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 10:52:58,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 10:52:58,887 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) [2023-02-14 10:53:02,394 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 [] [2023-02-14 10:53:02,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:53:02,697 INFO L93 Difference]: Finished difference Result 1793 states and 2748 transitions. [2023-02-14 10:53:02,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 10:53:02,698 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 [2023-02-14 10:53:02,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:53:02,704 INFO L225 Difference]: With dead ends: 1793 [2023-02-14 10:53:02,705 INFO L226 Difference]: Without dead ends: 1789 [2023-02-14 10:53:02,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-14 10:53:02,706 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 485 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 209 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s 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, 3.7s IncrementalHoareTripleChecker+Time [2023-02-14 10:53:02,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 1895 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 841 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2023-02-14 10:53:02,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2023-02-14 10:53:02,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1602. [2023-02-14 10:53:02,778 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) [2023-02-14 10:53:02,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 2411 transitions. [2023-02-14 10:53:02,784 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 2411 transitions. Word has length 43 [2023-02-14 10:53:02,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:53:02,786 INFO L495 AbstractCegarLoop]: Abstraction has 1602 states and 2411 transitions. [2023-02-14 10:53:02,786 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) [2023-02-14 10:53:02,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 2411 transitions. [2023-02-14 10:53:02,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-14 10:53:02,787 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:53:02,788 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] [2023-02-14 10:53:02,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-14 10:53:02,788 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:53:02,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:53:02,788 INFO L85 PathProgramCache]: Analyzing trace with hash -897411344, now seen corresponding path program 1 times [2023-02-14 10:53:02,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:53:02,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640738725] [2023-02-14 10:53:02,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:53:02,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:53:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:02,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 10:53:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:02,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-14 10:53:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:02,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 10:53:02,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:53:02,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640738725] [2023-02-14 10:53:02,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640738725] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 10:53:02,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 10:53:02,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 10:53:02,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458134631] [2023-02-14 10:53:02,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 10:53:02,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 10:53:02,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:53:02,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 10:53:02,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 10:53:02,963 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) [2023-02-14 10:53:06,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 10:53:08,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 10:53:09,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:53:09,528 INFO L93 Difference]: Finished difference Result 3169 states and 4941 transitions. [2023-02-14 10:53:09,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 10:53:09,529 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 [2023-02-14 10:53:09,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:53:09,563 INFO L225 Difference]: With dead ends: 3169 [2023-02-14 10:53:09,563 INFO L226 Difference]: Without dead ends: 3166 [2023-02-14 10:53:09,564 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 [2023-02-14 10:53:09,564 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 934 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 264 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s 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, 6.4s IncrementalHoareTripleChecker+Time [2023-02-14 10:53:09,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 2714 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 1306 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2023-02-14 10:53:09,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3166 states. [2023-02-14 10:53:09,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3166 to 2550. [2023-02-14 10:53:09,631 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) [2023-02-14 10:53:09,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2550 states to 2550 states and 3881 transitions. [2023-02-14 10:53:09,643 INFO L78 Accepts]: Start accepts. Automaton has 2550 states and 3881 transitions. Word has length 45 [2023-02-14 10:53:09,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:53:09,644 INFO L495 AbstractCegarLoop]: Abstraction has 2550 states and 3881 transitions. [2023-02-14 10:53:09,644 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) [2023-02-14 10:53:09,644 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states and 3881 transitions. [2023-02-14 10:53:09,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-14 10:53:09,645 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:53:09,646 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] [2023-02-14 10:53:09,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-14 10:53:09,646 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:53:09,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:53:09,646 INFO L85 PathProgramCache]: Analyzing trace with hash -285485209, now seen corresponding path program 1 times [2023-02-14 10:53:09,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:53:09,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636684099] [2023-02-14 10:53:09,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:53:09,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:53:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:09,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 10:53:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:09,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-14 10:53:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:09,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-02-14 10:53:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:09,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 10:53:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:09,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 10:53:09,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:53:09,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636684099] [2023-02-14 10:53:09,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636684099] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 10:53:09,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 10:53:09,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-14 10:53:09,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962801268] [2023-02-14 10:53:09,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 10:53:09,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-14 10:53:09,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:53:09,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-14 10:53:09,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-02-14 10:53:09,974 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) [2023-02-14 10:53:14,308 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 [] [2023-02-14 10:53:15,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:53:15,959 INFO L93 Difference]: Finished difference Result 3798 states and 5980 transitions. [2023-02-14 10:53:15,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-14 10:53:15,959 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 [2023-02-14 10:53:15,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:53:15,974 INFO L225 Difference]: With dead ends: 3798 [2023-02-14 10:53:15,974 INFO L226 Difference]: Without dead ends: 3790 [2023-02-14 10:53:15,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2023-02-14 10:53:15,977 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, 2815 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 [2023-02-14 10:53:15,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2815 Valid, 2975 Invalid, 3191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [963 Valid, 2227 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2023-02-14 10:53:15,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3790 states. [2023-02-14 10:53:16,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3790 to 3139. [2023-02-14 10:53:16,119 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) [2023-02-14 10:53:16,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 4829 transitions. [2023-02-14 10:53:16,129 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 4829 transitions. Word has length 47 [2023-02-14 10:53:16,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:53:16,130 INFO L495 AbstractCegarLoop]: Abstraction has 3139 states and 4829 transitions. [2023-02-14 10:53:16,130 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) [2023-02-14 10:53:16,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 4829 transitions. [2023-02-14 10:53:16,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-14 10:53:16,131 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:53:16,131 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] [2023-02-14 10:53:16,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-14 10:53:16,132 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:53:16,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:53:16,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1518670529, now seen corresponding path program 1 times [2023-02-14 10:53:16,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:53:16,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126186635] [2023-02-14 10:53:16,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:53:16,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:53:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:16,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 10:53:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:16,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-14 10:53:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:16,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-02-14 10:53:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:16,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 10:53:16,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:53:16,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126186635] [2023-02-14 10:53:16,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126186635] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 10:53:16,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 10:53:16,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 10:53:16,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020618623] [2023-02-14 10:53:16,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 10:53:16,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 10:53:16,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:53:16,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 10:53:16,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 10:53:16,306 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) [2023-02-14 10:53:19,433 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 [] [2023-02-14 10:53:22,125 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 [] [2023-02-14 10:53:22,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:53:22,665 INFO L93 Difference]: Finished difference Result 9987 states and 15921 transitions. [2023-02-14 10:53:22,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 10:53:22,665 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 [2023-02-14 10:53:22,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:53:22,696 INFO L225 Difference]: With dead ends: 9987 [2023-02-14 10:53:22,696 INFO L226 Difference]: Without dead ends: 7066 [2023-02-14 10:53:22,712 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 [2023-02-14 10:53:22,713 INFO L413 NwaCegarLoop]: 847 mSDtfsCounter, 1339 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 297 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s 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, 6.0s IncrementalHoareTripleChecker+Time [2023-02-14 10:53:22,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1408 Valid, 2251 Invalid, 1259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 960 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2023-02-14 10:53:22,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7066 states. [2023-02-14 10:53:22,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7066 to 6230. [2023-02-14 10:53:22,994 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) [2023-02-14 10:53:23,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6230 states to 6230 states and 9775 transitions. [2023-02-14 10:53:23,017 INFO L78 Accepts]: Start accepts. Automaton has 6230 states and 9775 transitions. Word has length 46 [2023-02-14 10:53:23,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:53:23,018 INFO L495 AbstractCegarLoop]: Abstraction has 6230 states and 9775 transitions. [2023-02-14 10:53:23,018 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) [2023-02-14 10:53:23,018 INFO L276 IsEmpty]: Start isEmpty. Operand 6230 states and 9775 transitions. [2023-02-14 10:53:23,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-14 10:53:23,019 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:53:23,020 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] [2023-02-14 10:53:23,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-14 10:53:23,020 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:53:23,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:53:23,020 INFO L85 PathProgramCache]: Analyzing trace with hash 2006170664, now seen corresponding path program 1 times [2023-02-14 10:53:23,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:53:23,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374138643] [2023-02-14 10:53:23,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:53:23,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:53:23,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:23,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 10:53:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:23,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-14 10:53:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:23,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 10:53:23,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:53:23,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374138643] [2023-02-14 10:53:23,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374138643] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 10:53:23,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 10:53:23,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-14 10:53:23,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001665850] [2023-02-14 10:53:23,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 10:53:23,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-14 10:53:23,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:53:23,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-14 10:53:23,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-14 10:53:23,381 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) [2023-02-14 10:53:26,816 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 [] [2023-02-14 10:53:28,882 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 [] [2023-02-14 10:53:30,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:53:30,181 INFO L93 Difference]: Finished difference Result 13181 states and 20868 transitions. [2023-02-14 10:53:30,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-14 10:53:30,181 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 [2023-02-14 10:53:30,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:53:30,209 INFO L225 Difference]: With dead ends: 13181 [2023-02-14 10:53:30,210 INFO L226 Difference]: Without dead ends: 7261 [2023-02-14 10:53:30,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-02-14 10:53:30,228 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 2253 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 605 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2297 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, 6.4s IncrementalHoareTripleChecker+Time [2023-02-14 10:53:30,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2297 Valid, 2158 Invalid, 1856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [605 Valid, 1249 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2023-02-14 10:53:30,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7261 states. [2023-02-14 10:53:30,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7261 to 6221. [2023-02-14 10:53:30,523 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) [2023-02-14 10:53:30,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 9754 transitions. [2023-02-14 10:53:30,546 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 9754 transitions. Word has length 46 [2023-02-14 10:53:30,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:53:30,547 INFO L495 AbstractCegarLoop]: Abstraction has 6221 states and 9754 transitions. [2023-02-14 10:53:30,548 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) [2023-02-14 10:53:30,548 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 9754 transitions. [2023-02-14 10:53:30,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-02-14 10:53:30,549 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:53:30,549 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] [2023-02-14 10:53:30,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-14 10:53:30,549 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:53:30,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:53:30,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1859253020, now seen corresponding path program 1 times [2023-02-14 10:53:30,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:53:30,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463483598] [2023-02-14 10:53:30,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:53:30,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:53:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:30,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 10:53:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:30,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-14 10:53:30,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:30,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-02-14 10:53:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:30,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 10:53:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:30,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 10:53:30,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:53:30,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463483598] [2023-02-14 10:53:30,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463483598] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 10:53:30,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 10:53:30,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-14 10:53:30,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189639229] [2023-02-14 10:53:30,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 10:53:30,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-14 10:53:30,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:53:30,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-14 10:53:30,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-02-14 10:53:30,874 INFO L87 Difference]: Start difference. First operand 6221 states and 9754 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 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) [2023-02-14 10:53:34,909 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 [] [2023-02-14 10:53:36,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:53:36,940 INFO L93 Difference]: Finished difference Result 7131 states and 11388 transitions. [2023-02-14 10:53:36,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-14 10:53:36,941 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 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 49 [2023-02-14 10:53:36,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:53:36,972 INFO L225 Difference]: With dead ends: 7131 [2023-02-14 10:53:36,972 INFO L226 Difference]: Without dead ends: 7126 [2023-02-14 10:53:36,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2023-02-14 10:53:36,976 INFO L413 NwaCegarLoop]: 814 mSDtfsCounter, 2551 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 2221 mSolverCounterSat, 826 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2612 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, 5.5s IncrementalHoareTripleChecker+Time [2023-02-14 10:53:36,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2612 Valid, 2921 Invalid, 3048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [826 Valid, 2221 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2023-02-14 10:53:36,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7126 states. [2023-02-14 10:53:37,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7126 to 6221. [2023-02-14 10:53:37,274 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) [2023-02-14 10:53:37,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 9753 transitions. [2023-02-14 10:53:37,295 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 9753 transitions. Word has length 49 [2023-02-14 10:53:37,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:53:37,296 INFO L495 AbstractCegarLoop]: Abstraction has 6221 states and 9753 transitions. [2023-02-14 10:53:37,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 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) [2023-02-14 10:53:37,296 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 9753 transitions. [2023-02-14 10:53:37,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-02-14 10:53:37,297 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:53:37,297 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] [2023-02-14 10:53:37,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-14 10:53:37,297 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:53:37,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:53:37,298 INFO L85 PathProgramCache]: Analyzing trace with hash -611856162, now seen corresponding path program 1 times [2023-02-14 10:53:37,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:53:37,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147677910] [2023-02-14 10:53:37,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:53:37,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:53:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:37,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 10:53:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:37,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-14 10:53:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:37,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-02-14 10:53:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:37,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 10:53:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:37,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 10:53:37,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:53:37,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147677910] [2023-02-14 10:53:37,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147677910] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 10:53:37,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 10:53:37,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-14 10:53:37,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822683446] [2023-02-14 10:53:37,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 10:53:37,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-14 10:53:37,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:53:37,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-14 10:53:37,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-14 10:53:37,870 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) [2023-02-14 10:53:42,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 10:53:44,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 10:53:45,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:53:45,001 INFO L93 Difference]: Finished difference Result 13280 states and 21298 transitions. [2023-02-14 10:53:45,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-14 10:53:45,002 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 [2023-02-14 10:53:45,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:53:45,041 INFO L225 Difference]: With dead ends: 13280 [2023-02-14 10:53:45,042 INFO L226 Difference]: Without dead ends: 7024 [2023-02-14 10:53:45,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-02-14 10:53:45,066 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 690 mSDsluCounter, 2282 mSDsCounter, 0 mSdLazyCounter, 1853 mSolverCounterSat, 228 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s 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, 6.7s IncrementalHoareTripleChecker+Time [2023-02-14 10:53:45,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 2846 Invalid, 2083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1853 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2023-02-14 10:53:45,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7024 states. [2023-02-14 10:53:45,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7024 to 6248. [2023-02-14 10:53:45,358 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) [2023-02-14 10:53:45,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6248 states to 6248 states and 9783 transitions. [2023-02-14 10:53:45,379 INFO L78 Accepts]: Start accepts. Automaton has 6248 states and 9783 transitions. Word has length 49 [2023-02-14 10:53:45,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:53:45,379 INFO L495 AbstractCegarLoop]: Abstraction has 6248 states and 9783 transitions. [2023-02-14 10:53:45,380 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) [2023-02-14 10:53:45,380 INFO L276 IsEmpty]: Start isEmpty. Operand 6248 states and 9783 transitions. [2023-02-14 10:53:45,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-02-14 10:53:45,381 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:53:45,381 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, 1] [2023-02-14 10:53:45,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-14 10:53:45,382 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:53:45,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:53:45,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1588923091, now seen corresponding path program 1 times [2023-02-14 10:53:45,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:53:45,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131358640] [2023-02-14 10:53:45,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:53:45,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:53:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:45,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 10:53:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:45,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-14 10:53:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:45,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-02-14 10:53:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:45,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 10:53:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:45,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 10:53:45,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:53:45,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131358640] [2023-02-14 10:53:45,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131358640] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 10:53:45,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533764067] [2023-02-14 10:53:45,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:53:45,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 10:53:45,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 10:53:45,949 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) [2023-02-14 10:53:45,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 10:53:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:46,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 2386 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-14 10:53:46,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 10:53:46,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 10:53:46,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 10:53:46,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 10:53:46,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533764067] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 10:53:46,818 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 10:53:46,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-02-14 10:53:46,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331994015] [2023-02-14 10:53:46,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 10:53:46,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-14 10:53:46,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:53:46,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-14 10:53:46,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-02-14 10:53:46,820 INFO L87 Difference]: Start difference. First operand 6248 states and 9783 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 10 states have internal predecessors, (61), 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) [2023-02-14 10:53:51,221 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 [] [2023-02-14 10:53:52,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:53:52,216 INFO L93 Difference]: Finished difference Result 13331 states and 21354 transitions. [2023-02-14 10:53:52,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-14 10:53:52,217 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 10 states have internal predecessors, (61), 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 51 [2023-02-14 10:53:52,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:53:52,237 INFO L225 Difference]: With dead ends: 13331 [2023-02-14 10:53:52,238 INFO L226 Difference]: Without dead ends: 7047 [2023-02-14 10:53:52,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2023-02-14 10:53:52,258 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 1087 mSDsluCounter, 2049 mSDsCounter, 0 mSdLazyCounter, 1561 mSolverCounterSat, 426 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 2611 SdHoareTripleChecker+Invalid, 1988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 1561 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-02-14 10:53:52,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 2611 Invalid, 1988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 1561 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2023-02-14 10:53:52,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7047 states. [2023-02-14 10:53:52,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7047 to 6271. [2023-02-14 10:53:52,576 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) [2023-02-14 10:53:52,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6271 states to 6271 states and 9806 transitions. [2023-02-14 10:53:52,597 INFO L78 Accepts]: Start accepts. Automaton has 6271 states and 9806 transitions. Word has length 51 [2023-02-14 10:53:52,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:53:52,597 INFO L495 AbstractCegarLoop]: Abstraction has 6271 states and 9806 transitions. [2023-02-14 10:53:52,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 10 states have internal predecessors, (61), 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) [2023-02-14 10:53:52,597 INFO L276 IsEmpty]: Start isEmpty. Operand 6271 states and 9806 transitions. [2023-02-14 10:53:52,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-02-14 10:53:52,598 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:53:52,598 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, 1] [2023-02-14 10:53:52,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-14 10:53:52,808 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 [2023-02-14 10:53:52,809 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:53:52,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:53:52,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1153105173, now seen corresponding path program 2 times [2023-02-14 10:53:52,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:53:52,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155155952] [2023-02-14 10:53:52,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:53:52,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:53:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:53,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 10:53:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:53,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-14 10:53:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:53,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-14 10:53:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:53,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 10:53:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:53,538 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 10:53:53,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:53:53,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155155952] [2023-02-14 10:53:53,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155155952] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 10:53:53,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984060330] [2023-02-14 10:53:53,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 10:53:53,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 10:53:53,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 10:53:53,540 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) [2023-02-14 10:53:53,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 10:53:55,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 10:53:55,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 10:53:55,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 2431 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-14 10:53:55,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 10:53:55,907 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 10:53:55,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 10:53:56,152 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 10:53:56,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984060330] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 10:53:56,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 10:53:56,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 23 [2023-02-14 10:53:56,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108659466] [2023-02-14 10:53:56,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 10:53:56,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-14 10:53:56,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:53:56,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-14 10:53:56,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2023-02-14 10:53:56,154 INFO L87 Difference]: Start difference. First operand 6271 states and 9806 transitions. Second operand has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 19 states have internal predecessors, (70), 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) [2023-02-14 10:54:02,258 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 [] [2023-02-14 10:54:03,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:54:03,544 INFO L93 Difference]: Finished difference Result 13497 states and 21603 transitions. [2023-02-14 10:54:03,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-14 10:54:03,545 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 19 states have internal predecessors, (70), 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 54 [2023-02-14 10:54:03,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:54:03,568 INFO L225 Difference]: With dead ends: 13497 [2023-02-14 10:54:03,568 INFO L226 Difference]: Without dead ends: 7113 [2023-02-14 10:54:03,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=485, Invalid=1585, Unknown=0, NotChecked=0, Total=2070 [2023-02-14 10:54:03,590 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 734 mSDsluCounter, 4316 mSDsCounter, 0 mSdLazyCounter, 3299 mSolverCounterSat, 237 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 4879 SdHoareTripleChecker+Invalid, 3537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 3299 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-02-14 10:54:03,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 4879 Invalid, 3537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 3299 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2023-02-14 10:54:03,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7113 states. [2023-02-14 10:54:03,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7113 to 6337. [2023-02-14 10:54:03,979 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) [2023-02-14 10:54:03,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6337 states to 6337 states and 9872 transitions. [2023-02-14 10:54:04,000 INFO L78 Accepts]: Start accepts. Automaton has 6337 states and 9872 transitions. Word has length 54 [2023-02-14 10:54:04,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:54:04,000 INFO L495 AbstractCegarLoop]: Abstraction has 6337 states and 9872 transitions. [2023-02-14 10:54:04,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 19 states have internal predecessors, (70), 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) [2023-02-14 10:54:04,001 INFO L276 IsEmpty]: Start isEmpty. Operand 6337 states and 9872 transitions. [2023-02-14 10:54:04,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-02-14 10:54:04,004 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:54:04,004 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] [2023-02-14 10:54:04,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-14 10:54:04,216 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 [2023-02-14 10:54:04,216 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:54:04,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:54:04,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1523908574, now seen corresponding path program 1 times [2023-02-14 10:54:04,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:54:04,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829908280] [2023-02-14 10:54:04,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:54:04,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:54:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:54:04,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 10:54:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:54:05,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-14 10:54:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:54:05,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-02-14 10:54:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:54:05,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 10:54:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:54:05,242 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 10:54:05,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:54:05,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829908280] [2023-02-14 10:54:05,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829908280] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 10:54:05,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649773477] [2023-02-14 10:54:05,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:54:05,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 10:54:05,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 10:54:05,243 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) [2023-02-14 10:54:05,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 10:54:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:54:05,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 2520 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-14 10:54:06,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 10:54:06,264 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 10:54:06,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 10:54:06,921 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 10:54:06,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649773477] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 10:54:06,922 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 10:54:06,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 14] total 41 [2023-02-14 10:54:06,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869530705] [2023-02-14 10:54:06,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 10:54:06,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-02-14 10:54:06,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:54:06,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-02-14 10:54:06,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1275, Unknown=0, NotChecked=0, Total=1640 [2023-02-14 10:54:06,925 INFO L87 Difference]: Start difference. First operand 6337 states and 9872 transitions. Second operand has 41 states, 41 states have (on average 2.1219512195121952) internal successors, (87), 37 states have internal predecessors, (87), 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) [2023-02-14 10:54:23,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 10:54:26,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 10:54:27,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:54:27,563 INFO L93 Difference]: Finished difference Result 13809 states and 22041 transitions. [2023-02-14 10:54:27,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-02-14 10:54:27,564 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.1219512195121952) internal successors, (87), 37 states have internal predecessors, (87), 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 59 [2023-02-14 10:54:27,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:54:27,586 INFO L225 Difference]: With dead ends: 13809 [2023-02-14 10:54:27,586 INFO L226 Difference]: Without dead ends: 7245 [2023-02-14 10:54:27,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=1529, Invalid=5611, Unknown=0, NotChecked=0, Total=7140 [2023-02-14 10:54:27,608 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 791 mSDsluCounter, 7378 mSDsCounter, 0 mSdLazyCounter, 5535 mSolverCounterSat, 252 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 7941 SdHoareTripleChecker+Invalid, 5789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 5535 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-02-14 10:54:27,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 7941 Invalid, 5789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 5535 Invalid, 2 Unknown, 0 Unchecked, 9.7s Time] [2023-02-14 10:54:27,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7245 states. [2023-02-14 10:54:27,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7245 to 6469. [2023-02-14 10:54:27,964 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) [2023-02-14 10:54:27,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6469 states to 6469 states and 10004 transitions. [2023-02-14 10:54:27,984 INFO L78 Accepts]: Start accepts. Automaton has 6469 states and 10004 transitions. Word has length 59 [2023-02-14 10:54:27,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:54:27,985 INFO L495 AbstractCegarLoop]: Abstraction has 6469 states and 10004 transitions. [2023-02-14 10:54:27,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.1219512195121952) internal successors, (87), 37 states have internal predecessors, (87), 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) [2023-02-14 10:54:27,985 INFO L276 IsEmpty]: Start isEmpty. Operand 6469 states and 10004 transitions. [2023-02-14 10:54:27,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-02-14 10:54:27,990 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:54:27,990 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] [2023-02-14 10:54:28,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-14 10:54:28,202 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 [2023-02-14 10:54:28,203 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:54:28,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:54:28,203 INFO L85 PathProgramCache]: Analyzing trace with hash 622858718, now seen corresponding path program 2 times [2023-02-14 10:54:28,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:54:28,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415661149] [2023-02-14 10:54:28,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:54:28,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:54:28,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:54:29,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 10:54:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:54:29,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-14 10:54:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:54:30,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-02-14 10:54:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:54:30,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 10:54:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:54:30,119 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 10:54:30,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:54:30,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415661149] [2023-02-14 10:54:30,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415661149] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 10:54:30,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321883251] [2023-02-14 10:54:30,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 10:54:30,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 10:54:30,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 10:54:30,121 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) [2023-02-14 10:54:30,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-14 10:54:32,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 10:54:32,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 10:54:32,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 50 conjunts are in the unsatisfiable core [2023-02-14 10:54:32,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 10:54:33,924 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 10:54:33,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 10:54:37,419 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 10:54:37,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321883251] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 10:54:37,420 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 10:54:37,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 26, 26] total 77 [2023-02-14 10:54:37,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904939138] [2023-02-14 10:54:37,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 10:54:37,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-02-14 10:54:37,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:54:37,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-02-14 10:54:37,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1303, Invalid=4549, Unknown=0, NotChecked=0, Total=5852 [2023-02-14 10:54:37,423 INFO L87 Difference]: Start difference. First operand 6469 states and 10004 transitions. Second operand has 77 states, 77 states have (on average 1.5974025974025974) internal successors, (123), 73 states have internal predecessors, (123), 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) [2023-02-14 10:55:09,680 WARN L233 SmtUtils]: Spent 24.79s on a formula simplification. DAG size of input: 152 DAG size of output: 25 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-14 10:55:37,207 WARN L233 SmtUtils]: Spent 19.72s on a formula simplification. DAG size of input: 146 DAG size of output: 25 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-14 10:56:27,280 WARN L233 SmtUtils]: Spent 16.50s on a formula simplification. DAG size of input: 140 DAG size of output: 25 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)